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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4825. Отображено 100.
29-03-2012 дата публикации

Pneumatic stepper motor

Номер: US20120076681A1
Автор: Alexandru Patriciu, Dan Stoianovici, Doru Petrisor, Dumitru Mazilu, Louis R. Kavoussi
Принадлежит: JOHNS HOPKINS UNIVERSITY

A stepper motor suitable for use in a medical imaging environment has (a) a cylindrical central gear having an external surface with circumferentially distributed and radially directed teeth, (b) a shaft for mounting the central gear such that it is constrained to move in rotational motion about its centerline, (c) a cylindrical hoop gear having a bore with an internal surface having circumferentially distributed and radially directed teeth, (d) level arm crank mechanisms for mounting the hoop gear such that it is constrained to move in translational-circular motion about the central gear's centerline, wherein this central gear is further configured to fit within the hoop gear's bore in such a manner that a plurality of the central gear and hoop gear teeth intermesh and cooperate so that the planetary movement of the hoop gear causes the central gear to rotate, and (e) piston mechanisms for applying a fluid pressure driven force to specified points on the hoop gear so as to cause its movement.

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Номер записи: 1
27-09-2012 дата публикации

Speed reducer, robot hand and robot

Номер: US20120244984A1
Автор: Hiroyuki Kusumoto, Sota Yamamoto
Принадлежит: Seiko Epson Corp

Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins which are configured to extract rotation of the revolving gear are inserted in the through holes. The ring gear and the revolving gear are divided into halves in the thickness direction. Two sheets of ring gears are biased to rotate in reverse directions.

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Номер записи: 2
29-11-2012 дата публикации

Planet Carrier Assembly

Номер: US20120302395A1
Автор: Siu Yun Poon
Принадлежит: Individual

A gearbox assembly comprising of at least one planetary gear set comprising one or more ring gears, one or more sun gears and a planet carrier. The planet carrier supports two sets of circumferentially spaced planet gear bearings, pins and planet gears. The bearings, pins and gears are able to self adjust in an angular direction relative to the carrier supporting disc whereby the rotation axis of the planet gears may remain perpendicular to the plane of the planet carrier or skewed from said plane.

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Номер записи: 3
24-01-2013 дата публикации

Speed reducer incorporating portion structure, incorporating method, and eccentric oscillating type speed reducer

Номер: US20130023374A1
Автор: Takashi Haga, Tetsuzo Ishikawa, Yoshitaka Shizu
Принадлежит: Sumitomo Heavy Industries Ltd

There is provided a speed reducer incorporating portion structure for a plurality of industrial machines in which an eccentric oscillating type speed reducer having an internal gear and an external gear that rotates in an oscillating manner while internally meshing with the internal gear is incorporated. The speed reducer may be incorporated in the plurality of industrial machines, respectively, so that the position of a meshing portion when the external gear is assembled to the internal gear has a specific phase relationship common to the plurality of industrial machines with respect to a specific part of an industrial machine in which the speed reducer is incorporated.

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Номер записи: 4
31-01-2013 дата публикации

Two-Array Planetary Gear System With Flexpins and Helical Gearing

Номер: US20130029802A1
Автор: Gerald P. Fox
Принадлежит: Timken Co

A planetary gear system (P) includes a sun gear ( 2 ), a ring gear ( 4 ) a carrier ( 6 ) located between the sun and ring gears ( 2, 4 ), and planet pinions ( 8, 10 ) organized in two arrays and supported on flexpin assemblies ( 32, 34 ) in the carrier ( 6 ). All of the gearing is helical, with the sun and ring gears ( 2, 4 ) having their teeth arranged in at double helix angles (herringbone) and the planet gears ( 8, 10 ) at single helix angles. The pinions ( 8 ) of the one array engage the teeth of one angle on the sun and ring gears ( 2, 4 ) and the pinions ( 10 ) of the other array engage the teeth of the other angle on the sun and ring gears ( 2, 4 ). Torque transfers through the carrier ( 6 ) through two torque paths (a, b)—one to the flexpin assemblies ( 32 ) for one array and the other to the flexpin assemblies ( 34 ) of the other array—and the paths (a) is stiffer than the path (b). Owing to the helical cut of the teeth the planet pinions ( 8, 10 ) of the two arrays exert oppositely directed axial forces (A) on the sun gear ( 2 ). The sun gear ( 2 ) is free to shift axially or float with respect to the planet pinions ( 8, 10 ) of the two arrays, so the axial forces (A) imparted to the sun gear, while opposite, are equal. Hence, the tangential forces (T), which transfer the torque, are likewise equal, notwithstanding the difference in flexibility of the two torque paths (a, b). Even though the carrier ( 6 ) may undergo different deflections at the flexpin assemblies ( 32, 34 ) for the two arrays of planet pinions ( 8, 10 ), the planet pinions ( 8, 10 ) of the two arrays transfer torques of equal magnitude.

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Номер записи: 5
16-05-2013 дата публикации

In-wheel motor drive device

Номер: US20130119748A1
Автор: Ken Yamamoto
Принадлежит: NTN Corp

An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.

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Номер записи: 6
20-06-2013 дата публикации

Modular gear unit for a wind turbine

Номер: US20130157802A1
Автор: Jose Maria Zabala Zabala, Luis ORDOÑEZ VICENTE
Принадлежит: Gamesa Innovation and Technology SL

A planetary gear unit ( 21 ) of a gearbox of a wind turbine comprising a sun gear ( 27 ), planet gears ( 25, 25′ ), a ring gear ( 24 ), a planet carrier ( 29 ) and an outer casing ( 31 ); the ring gear ( 24 ) being mounted on the outer casing ( 31 ) ; the planet carrier ( 29 ) comprising a bogie plate ( 35 ) where planet gears ( 25, 25′ ) are rotatably mounted on planet shafts ( 41 ); the planet carrier ( 29 ) comprising a main body ( 51 ) and a backplate ( 53 ) which can be joined/disjoined to the main body ( 51 ) for facilitating the assembly/disassembly of the planetary gear unit ( 21 ); the planet carrier ( 29 ) being rotatably mounted on said outer casing ( 31 ) by means of a first bearing ( 72 ) in contact with said main body ( 51 ) at the rotor side and by means of a second bearing ( 73 ) in contact with said backplate ( 53 ) at the generator side.

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Номер записи: 7
03-10-2013 дата публикации

Speed reduction mechanism, and motor torque transmission device including the speed reduction mechanism

Номер: US20130257202A1
Автор: Hiroshi Takuno, Keita NOMURA, Kunihiko Suzuki, Masaharu Tagami, Motoyasu Yamamori, Tohru ONOZAKI, Tomoyoshi TAKAI, Tsune Kobayashi
Принадлежит: JTEKT Corp

In a reduction-transmission mechanism, an input member is arranged at such a position that a size obtained by adding a fitting clearance formed between a ball bearing and an outer periphery of an eccentric portion, a fitting clearance formed between the ball bearing and an inner periphery of the input member, which defines a center hole, and a radial internal clearance of the ball bearing is smaller than a size obtained by adding a fitting clearance formed between an outer periphery of each of a plurality of output members and a corresponding one of needle roller bearings, a fitting clearance formed between each of the needle roller bearings and an inner periphery of the input member, which defines a corresponding one of a plurality of pin insertion holes, and a radial internal clearance of each of the needle roller bearings.

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Номер записи: 8
03-01-2019 дата публикации

COFFEE MILL AND AUTOMATIC COFFEE MACHINE HAVING A COFFEE MILL

Номер: US20190000271A1
Автор: Eicher Heinz
Принадлежит: EUGSTER/FRISMAG AG

A coffee grinder, in particular for the installation in a fully-automatic coffee machine, including an electric drive motor () for driving a grinding unit, wherein a reduction gear () formed as a planetary gear is arranged between drive motor () and grinding unit, with the sun gear () of this planetary gear being drivable by the drive motor (). The planetary gear includes multiple planetary rods () arranged in the circumferential direction around the sun gear (), these rods including a first axial portion () meshing with the sun gear () as well as an axially neighboring, second axial portion () with a second diameter different from, preferably smaller than, a first diameter of the first axial portion (), with this second axial portion meshing with a stationary ring gear (). The toothed racks are arranged to drive an output element () with their first axial portions (). 114131. A coffee grinder for installation in fully-automatic coffee machines , including an electric drive motor () for driving a grinding unit , wherein a reduction gear () formed as a planetary gear is arranged between the drive motor () and the grinding unit , with a sun gear of this planetary gear () being drivable by the drive motor () ,wherein{'b': 8', '3', '7', '3', '9', '7', '11', '15', '7, 'the planetary gear comprises multiple planetary rods () arranged in a circumferential direction around the sun gear (), these rods including a first axial portion () meshing with the sun gear () as well as an axially neighboring, second axial portion () with a second diameter different from, a first diameter of the first axial portion (), with this second axial portion meshing with a stationary ring gear (), and wherein toothed racks are arranged to drive an output element () with their first axial portions ().'}237155. The coffee grinder of claim 1 , wherein the sun gear () claim 1 , the first axial portions () and the output element () comprise a helical toothing () claim 1 , in which the axial tooth ...

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Номер записи: 9
06-01-2022 дата публикации

Eccentric Gearing

Номер: US20220003296A1
Автор: VON LEHMANN Ernst
Принадлежит: MAXON INTERNATIONAL AG

The present disclosure relates to an eccentric gearing having a first gearing element, which has a first axis and an outer contour having at least one cam, and having a second gearing element, which has a second axis which is constantly held eccentrically in relation to the first axis. The first gearing element is rotatable relative to the second gearing element, and the second gearing element is supported on the outer contour of the first gearing element such that a rotation of the first gearing element effects a rotation of the second axis of the second gearing element about the first axis. The first gearing element has a number N of cams protruding radially, and uniformly distributed in the circumferential direction, in relation to the first axis. The second gearing element is supported at N+1 contact points of the first gearing element, wherein N is at least two. 1. Eccentric gearing comprising:a first gearing element, which has a first axis and an outer contour having at least one cam protruding radially in relation to the first axis;a second gearing element, which has a second axis which is constantly held eccentrically in relation to the first axis, wherein the first gearing element is mounted in a rotatable manner about the first axis relative to the second gearing element, and wherein the second gearing element is supported on the outer contour of the first gearing element such that a rotation of the first gearing element about the first axis will effect a rotation of the second axis of the second gearing element about the first axis, andwherein the outer contour of the first gearing element has a number N of cams protruding radially in relation to the first axis, which cams are arranged so as to be distributed uniformly in a circumferential direction in relation to the first axis, wherein the second gearing element is supported at N+1 contact points on the outer contour of the first gearing element, and wherein the number N is at least two.2. Eccentric ...

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Номер записи: 10
07-01-2021 дата публикации

VEHICLE DRIVE DEVICE

Номер: US20210001712A1
Автор: MISU Takahiro, Tanaka Satoru
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A vehicle drive device includes an electric motor disposed in a wheel, a planetary gear mechanism, and a hub. The electric motor is configured to generate a drive force which drives the wheel. The drive force of the electric motor is transmitted to the planetary gear mechanism. The hub transmits a drive force of the planetary gear mechanism to the wheel. The planetary gear mechanism includes a pinion gear having a first pinion and a second pinion coaxial with the first pinion and having a smaller diameter than the first pinion, a fixed ring gear which engages with the first pinion, and a drive ring gear which engages with the second pinion and transmits a drive force to the hub. The first pinion is disposed at a position away from an end portion of the stator core in a direction in which a rotation center axis of the wheel extends. 1. A vehicle drive device comprising:an electric motor which is disposed in a wheel of a vehicle, includes a stator having a stator core and a rotor, and is configured to generate a drive force which drives the wheel;a planetary gear mechanism to which the drive force of the electric motor is transmitted; anda hub which transmits a drive force of the planetary gear mechanism to the wheel,wherein the planetary gear mechanism includes a pinion gear having a first pinion and a second pinion coaxial with the first pinion and having a smaller diameter than the first pinion, a fixed ring gear which engages with the first pinion, and a drive ring gear which engages with the second pinion and transmits a drive force to the hub, andthe first pinion is disposed at a position away from an end portion of the stator core in a direction in which a rotation center axis of the wheel extends.2. The vehicle drive device according to claim 1 , further comprising a transmission mechanism including a driven gear which transmits the drive force of the electric motor to the planetary gear mechanism claim 1 ,wherein the electric motor and the planetary gear ...

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Номер записи: 11
02-01-2020 дата публикации

SHADING DEVICE FOR A WINDOW OF A MOTOR VEHICLE

Номер: US20200001686A1
Автор: BUCUR Adrian, ELLEDER Dietmar, HILBERT Jürgen, JONAS Bernd, MAIER Matthias, MARZINKE Timo, MOLNAR György
Принадлежит:

Shading device with a shading structure windably held on a winding shaft arranged in a vehicle-mounted receiving region with a passage through which the shading structure is pulled into a shading position or wound up into an inoperative position. The passage is closed or opened by a pivotably mounted closing part. The shading structure is provided with a profile movable along the window with the aid of a drive system to shift the shading structure between the inoperative and shading positions. The closing part is controlled by a control mechanism between closed and opening positions depending on a shifting movement of the pull-out profile. The control mechanism has a rotatable eccentric disk operatively connected to the closing part, the outer circumference of which has different control contours for reproducing the closed position and the opening position of the closing part depending on a rotational position of the disk. 1. A shading device for a window of a motor vehicle , with a flexible shading structure which is held on a winding shaft so as to be able to be wound up and unwound , which winding shaft is arranged in a vehicle-mounted receiving region which is assigned a passage , through which the flexible shading structure can be pulled out into a shading position or can be wound up into an inoperative position , wherein the passage can be closed or can be opened up by means of a pivotably mounted closing part , wherein the shading structure is provided at its end region in front in the pull-out direction with a dimensionally stable pull-out profile which is movable along the window with the aid of at least one drive transmission means of a drive system in order to shift the shading structure between the inoperative position and the shading position , and wherein the closing part is forcibly controlled by means of a control mechanism between a closed position and at least one opening position depending on a shifting movement of the pull-out profile , wherein ...

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Номер записи: 12
04-01-2018 дата публикации

CARRIER STOP FOR SPLIT RING PLANETARY DRIVE

Номер: US20180003277A1
Автор: Brown Daniel, McCloy Chad
Принадлежит:

A split ring planetary drive with at least one travel end stop received in at least one pocket of a first ring gear. The travel end stop is moveable between a first stop position in which as the planetary drive rotates in a direction the travel end stop engages the stop on the planet carrier, preventing further rotation of the split ring planetary drive in the direction, and a second position in which the travel end stop does not engage the stop on the planet carrier. The travel end stop may be a deadbolt, a snap ring or pivoting pawl. 1. A split ring planetary drive for adjusting relative phases of a first shaft and a second shaft , comprising:a sun gear rotatable around a sun axis, the sun gear comprising a plurality of sun gear teeth;a plurality of planetary gears arranged around the sun gear, each planetary gear comprising a plurality of planetary teeth maintaining the planetary gear in meshing engagement with the sun gear teeth;a planet carrier having a stop, the planet carrier being rotatable with the plurality of planetary gears;a first ring gear rotatable with the first shaft, the first ring gear comprising a plurality of first ring gear teeth maintaining the first ring gear in meshing engagement with the planetary gear teeth of each of the planetary gears;a second ring gear rotatable with the second shaft, the second ring gear comprising a plurality of second ring gear teeth maintaining the second ring gear in meshing engagement with the planetary gear teeth of each of the planetary gears; andat least one travel end stop received in at least one pocket of the first ring gear, the at least one travel end stop being moveable between a first stop position in which as the planetary drive rotates in a direction the travel end stop engages the stop on the planet carrier, preventing further rotation of the split ring planetary drive in the direction, and a second position in which the travel end stop does not engage the stop on the planet carrier.2. The split ring ...

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Номер записи: 13
02-01-2020 дата публикации

VEHICULAR TRANSMISSION

Номер: US20200003300A1
Автор: YANG Jihoon
Принадлежит:

A vehicular transmission includes a movable unit coupled to a lever and rotated to select one of a plurality of shift stages and including a first internal gear centered on a first axis, an eccentric gear unit centered on a second axis eccentric from the first axis and including a first external gear and a second external gear eccentrically engaged with the first internal gear, a rotation unit centered on the first axis and including a second internal gear eccentrically engaged with the second external gear, an insertion unit including an eccentric shaft inserted into a center of the eccentric gear unit and a central shaft inserted into a first aperture formed at a center of the rotation unit, and a locking unit configured to fix the rotation unit based on a source of a driving force for rotating the movable unit. 1. A vehicular transmission comprising:a movable unit coupled to a lever and rotated to select one of a plurality of shift stages, the movable unit comprising a first internal gear centered on a first axis;an eccentric gear unit centered on a second axis eccentric from the first axis, the eccentric gear unit comprising a first external gear eccentrically engaged with the first internal gear and a second external gear integrally formed with the first external gear;a rotation unit centered on the first axis, the rotating unit comprising a second internal gear eccentrically engaged with the second external gear;an insertion unit comprising an eccentric shaft and a central shaft that are integrally formed, wherein the eccentric shaft is inserted into a center of the eccentric gear unit, and the central shaft is inserted into a first aperture formed at a center of the rotation unit; anda locking unit configured to fix the rotation unit depending on a source of a driving force for rotating the movable unit, wherein the locking unit comprises a moving rod configured to move in the direction of the first axis to fix the rotation unit, and an actuator configured to ...

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Номер записи: 14
07-01-2016 дата публикации

ARRANGEMENT OF AN ELECTRIC MACHINE AND OF A TRANSMISSION CONNECTED DOWNSTREAM THEREOF

Номер: US20160006321A1
Автор: Knoblauch Daniel, Schiek Werner, SPENGLER Gerhard, Spiegel Leo, Stache Immo
Принадлежит:

An arrangement () for driving a wheel of a motor vehicle has an electric machine () and a transmission (). The transmission () is downstream of the electric machine () and is arranged within the electric machine (). A common cooling device () with a cooling water jacket () is utilized for cooling both the electric machine () and the transmission (). 1. An arrangement for driving at least one wheel of a motor vehicle , the arrangement comprising:an electric machine;a transmission connected downstream of the electric machine and arranged within the electric machine; anda common cooling device having a cooling water jacket that is utilized for cooling both the electric machine and the transmission.2. The arrangement of claim 1 , wherein the cooling water jacket is arranged between the electric machine and the transmission.3. The arrangement of claim 2 , wherein the electric machine has an external rotor and an internal stator claim 2 , the cooling water jacket being arranged between the internal stator of the electric machine and the transmission.4. The arrangement of claim 3 , wherein the cooling water jacket is integrated into a hollow cylinder that is fixed to a housing claim 3 , the hollow cylinder having an outside that holds the stator and having an inside that accommodates components of the transmission.5. The arrangement of claim 3 , wherein the transmission is arranged entirely within the electric machine.6. The arrangement of claim 5 , wherein the transmission does not protrude beyond the electric machine in either axial direction of the rotor.7. The arrangement of claim 6 , wherein the electric machine has a static housing that accommodates the stator claim 6 , the transmission being entirely within the housing.8. The arrangement of claim 7 , wherein the housing has an outer housing section radially at an outside and inner housing sections between the outer housing section and an axis of rotation of a drive output shaft of the transmission claim 7 , the ...

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Номер записи: 15
02-01-2020 дата публикации

ELECTRIC ACTUATOR

Номер: US20200007002A1
Автор: KINJO Shuichi, Saito Kazuhiro, SHIRAI Hiroshi
Принадлежит: NIDEC TOSOK CORPORATION

An electric actuator includes: a motor; a first case accommodating the motor; a second case located on one side in an axial direction of the first case; a bearing holder fixed to the first case; and a first bearing held by the bearing holder. The first case has a wall part covering the other side in the axial direction of a stator and having a through hole. The bearing holder has: a holder cylindrical part holding the first bearing and inserted into the through hole; and a holder flange part fixed to the wall part. An inner diameter of the through hole is larger than an outer diameter of the holder cylindrical part. At least a part of a radially outer surface of the holder cylindrical part in a circumferential direction is located in a position radially inside and away from a radially inner surface of the through hole. 1. An electric actuator , comprising:a motor, having a motor shaft that rotates about a central axis, a rotor body fixed to the motor shaft, and a stator that faces the rotor body in a radial direction via a gap;a speed reduction mechanism connected to a portion on one side in an axial direction of the motor shaft;an output shaft extending in the axial direction of the motor shaft on one side in the axial direction of the motor shaft, to which rotation of the motor shaft is transmitted via the speed reduction mechanism;a first case accommodating the motor and having a first opening part open on one side in the axial direction;a second case located on one side in the axial direction of the first case and having a second opening part open on the other side in the axial direction;a bearing holder fixed to the first case;a first bearing held by the bearing holder and rotatably supporting a portion of the motor shaft that is closer to the other side in the axial direction than the rotor body; anda second bearing supporting a portion of the motor shaft that is closer to one side in the axial direction than the rotor body so that it is rotatable relative to ...

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Номер записи: 16
27-01-2022 дата публикации

REDUCTION GEAR

Номер: US20220025959A1
Автор: KAJIWARA Yasushi
Принадлежит:

A reduction gear has pins that extend across and contact a first swing body and a second swing body and are swung by the first swing body and the second swing body. A first radial direction groove forming body has radial direction grooves formed in the same number (Za) as the pins to allow the pins to slide in a radial direction. A second radial direction groove forming body has radial direction grooves formed in the same number as the pins to allow the other ends of the pins to slide in the radial direction. A wave shape depressed portion forming body has wave shape depressed portions contacting the pins formed along a circumferential direction (Zb). Then, the difference between Za and Zb is 1. 1. A reduction gear that decelerates and transmits rotation of an input side rotation body to an output side rotation body , the reduction gear comprising:an eccentric cam that turns together with the input side rotation body;a first swing body relatively turnably fitted to the eccentric cam and swung by the eccentric cam that turns in an eccentric state with respect to a rotation shaft center of the input side rotation body;a second swing body that is relatively turnably fitted to the eccentric cam, swung by the eccentric cam that turns in an eccentric state with respect to the rotation shaft center of the input side rotation body, and swung in a state of being shifted by 180° in phase with respect to the first swing body;a plurality of round rod shaped pins that extend across and contact outer peripheries of the first swing body and the second swing body and are swung by swing motions of the first swing body and the second swing body;a first radial direction groove forming body, a direction extending radially from the rotation shaft center of the input side rotation body being defined as a radial direction, a direction along a circumference of a virtual circle centering on the rotation shaft center of the input side rotation body being defined as a circumferential ...

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Номер записи: 17
14-01-2021 дата публикации

SPEED REDUCER

Номер: US20210010564A1
Автор: FURUTA Kazuya
Принадлежит:

A speed reducer according to one embodiment of the invention includes a carrier having a recess therein, a crankshaft disposed in the recess, and a stopper that is disposed on a bottom surface of the recess and prevents the crankshaft from moving in a direction along a rotation axis of the crankshaft toward the bottom surface. 1. A speed reducer , comprising:a carrier having a recess therein;a crankshaft disposed in the recess; anda stopper disposed on a bottom surface of the recess and preventing the crankshaft from moving in a direction toward the bottom surface along a rotation axis of the crankshaft.2. The speed reducer of claim 1 , further comprising a crankshaft bearing disposed on an inner peripheral surface of the recess at a position apart from the bottom surface in a rotation axis direction of the crankshaft claim 1 ,wherein the stopper prevents the crankshaft bearing from moving in the rotation axis direction toward the bottom surface.3. The speed reducer of claim 2 , wherein the inner peripheral surface includes a support surface supporting the crankshaft bearing and a clearance portion disposed between the support surface and the bottom surface in the rotation axis direction claim 2 , the clearance portion having a larger diameter than the support surface.4. The speed reducer of claim 3 , wherein the clearance portion is disposed apart from the bottom surface in the rotation axis direction.5. The speed reducer of claim 4 , wherein the carrier has a through hole extending in the rotation axis direction claim 4 , andwherein the speed reducer further comprises a sealing member provided in the through hole.6. The speed reducer of claim 2 , wherein an outer peripheral surface of the stopper has a smaller diameter than the crankshaft bearing.7. The speed reducer of claim 6 , wherein the through hole has a smaller diameter than the outer peripheral surface of the stopper.8. The speed reducer of claim 1 , wherein the carrier has a second recess claim 1 , ...

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Номер записи: 18
14-01-2021 дата публикации

PLANETARY GEARBOX AND ASSOCIATED ROBOT JOINT AND ROBOT

Номер: US20210010565A1
Автор: Gu Hao, Qin Jian, Tao Zhiqiang, Yang Jibo
Принадлежит:

A planetary gearbox, including a housing extending along a first axis, an inner coupling mechanism arranged on an inner surface of the housing, an input component arranged within and coaxially with the housing and operable to rotate about the first axis, an engaging mechanism arranged in the housing and coupled to the input component, the engaging mechanism having a second axis offset from the first axis and adapted to be driven by the input component to rotate about the second axis while engaging with the inner coupling mechanism and an output component coupled to the engaging mechanism and adapted to be actuated by the rotation of the engaging mechanism to rotate about the first axis, wherein at least engaging surface of the inner coupling mechanism and at least engaging surface of the output component are made of one of metal and non-metal material, and at least engaging surface of the engaging mechanism is made of the other of metal and non-metal material. 1. A planetary gearbox , comprising:a housing extending along a first axis;an inner coupling mechanism arranged on an inner surface of the housing;an input component arranged within and coaxially with the housing; and operable to rotate about the first axis;an engaging mechanism arranged in the housing and coupled to the input component, the engaging mechanism having a second axis offset from the first axis and adapted to be driven by the input component to rotate about the second axis while engaging with the inner coupling mechanism; andan output component coupled to the engaging mechanism and adapted to be actuated by the rotation of the engaging mechanism to rotate about the first axis;wherein at least engaging surface of the inner coupling mechanism and at least engaging surface of the output component are made of one of metal and non-metal material, and at least engaging surface of the engaging mechanism is made of the other of metal and non-metal material.2. The planetary gearbox of claim 1 , wherein the ...

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Номер записи: 19
14-01-2021 дата публикации

ECCENTRIC OSCILLATION TYPE SPEED REDUCER

Номер: US20210010566A1
Автор: TAMURA Mitsuhiro, YAMAMOTO Akira
Принадлежит:

An eccentric oscillation type speed reducer includes: an external gear which meshes with the internal gear; an eccentric body shaft which oscillates the external gear; and an input shaft bearing which supports the eccentric body shaft. The casing and the external gear are made of resin, and the input shaft bearing is made of metal. 1. An eccentric oscillation type speed reducer comprising:an internal gear provided in a casing;an external gear which meshes with the internal gear;an eccentric body shaft which oscillates the external gear; andan input shaft bearing which supports the eccentric body shaft,wherein the casing and the external gear are made of resin, andthe input shaft bearing is made of metal.2. The eccentric oscillation type speed reducer according to claim 1 ,wherein the eccentric body shaft is made of metal.3. The eccentric oscillation type speed reducer according to claim 1 , further comprising:a carrier disposed at a side portion of the external gear in an axial direction,wherein the carrier is made of metal.4. The eccentric oscillation type speed reducer according to claim 3 ,wherein the input shaft bearing is made of iron-based metal, andthe carrier is made of metal having a specific gravity of 5 or less.5. The eccentric oscillation type speed reducer according to claim 1 , further comprising:a cover which covers at least one of an input side of the casing or a side opposite to the input side of the casing,wherein the cover is made of resin.6. The eccentric oscillation type speed reducer according to claim 5 ,wherein at least one of the casing or the external gear is made of resin having higher heat resistance than heat resistance of the cover.7. The eccentric oscillation type speed reducer according to claim 1 ,wherein the internal gear comprises an internal gear main body integrated with the casing and a pin member rotatably supported by the internal gear main body,the internal gear main body is made of resin, andthe pin member is made of metal.8 ...

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Номер записи: 20
10-01-2019 дата публикации

PLANETARY GEAR MECHANISM

Номер: US20190011039A1
Автор: Yugi Satoshi
Принадлежит: HONDA MOTOR CO., LTD.

A planetary gear mechanism comprises a sun gear, a planetary gear that meshes with the sun gear, a planetary carrier having a planetary shaft which axially supports the planetary gear, and a ring gear which meshes with the planetary gear; wherein: the planetary gear has a coaxially disposed first inside-diameter part and second inside-diameter part of different inside diameter; the planetary gear mechanism has a first bearing member that has an outside diameter conforming to the first inside-diameter part and a second bearing member that has an outside diameter conforming to the second inside-diameter part, the two bearing members being arranged between the planetary shaft and the planetary gear; and the planetary gear mechanism is easily assembled while having a configuration in which the two bearing members are interposed between the planetary shaft and the planetary carrier so as to be coaxially divided in the axial direction. 113-. (canceled)14. A planetary gear mechanism comprising:a sun gear;a planetary gear that meshes with the sun gear;a planetary carrier having a planetary shaft that pivotally supports the planetary gear; anda ring gear that meshes with the planetary gear,wherein the planetary gearcoaxially has a first inside-diameter part and a second inside-diameter part of different inside diameters,wherein the inside diameter of the first inside-diameter part is a smaller diameter than the inside diameter of the second inside-diameter part,wherein the planetary shaft coaxially has a first outside-diameter part and a second outside-diameter part of different outside diameters,wherein the outside diameter of the first outside-diameter part is smaller diameter than the outside diameter of the second outside-diameter part,wherein the planetary gear mechanism comprises, to be arranged between the planetary shaft and the planetary gear,a first bearing member having an outside diameter conforming to the first inside-diameter part, and a second bearing member ...

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Номер записи: 21
09-01-2020 дата публикации

Hypocycloid Speed Buffer

Номер: US20200011400A1
Автор: David A. TORY
Принадлежит: ECA Medical Instruments Inc

A reduction assembly, attachable to a torque limiting device, comprising a drive shaft having an input segment, an eccentric segment, and an output segment, wherein the input segment and the output segment each have a centerline running along a same first axis, and wherein the eccentric segment has a center line running along a second axis, the second axis being parallel to the first axis and positioned a first distance away from the first axis. The assembly further comprising a disk assembly having a disk with a body, a plurality of lobes positioned concentrically on the body, and an opening extending through the body, the opening configured to slidably engage the eccentric segment of the drive shaft. The assembly further comprising a disk receptacle configured to engage with the disk, the receptacle having a floor and a wall with a plurality of protrusions extending from the wall, wherein the number of the plurality of protrusions is equal to one more than the number of the plurality of lobes on the disk.

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Номер записи: 22
15-01-2015 дата публикации

In-wheel motor drive device

Номер: US20150015056A1
Автор: Ken Yamamoto
Принадлежит: NTN Corp

An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.

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Номер записи: 23
18-01-2018 дата публикации

GEAR DEVICE

Номер: US20180017133A1
Автор: NAKAI Yuto, Nakamura Koji, Takahashi Masahiro
Принадлежит:

A gear device is provided with inner-tooth pins fitted into pin grooves of an outer cylinder, a carrier housed inside the outer cylinder, a crankshaft rotatably supported on the carrier, an oscillating gear having outer teeth meshable with the inner-tooth pins and configured to oscillate in conjunction with rotation of the crankshaft, while the outer teeth are meshed with the inner-tooth pins, and a restriction member configured to restrict movement of the inner-tooth pins in an axial direction. The restriction member is mounted to the outer cylinder on an outer side of the outer cylinder. 1. A gear device for transmitting a rotational force at a predetermined speed reduction ratio between a pair of counterpart members , the gear device comprising:an outer cylinder fixable to one of the counterpart members and having a plurality of pin grooves in an inner peripheral surface thereof, the plurality of pin grooves extending in an axial direction of said outer cylinder;a plurality of inner-tooth pins fitted into the plurality of pin grooves of the outer cylinder, respectively;a carrier housed inside the outer cylinder and fixable to the other counterpart member;a crankshaft rotatably supported on the carrier;an oscillating gear having outer teeth meshed with the plurality of inner-tooth pins and configured to oscillate in conjunction with rotation of the crankshaft, while the outer teeth are meshed with the plurality of inner-tooth pins; anda restriction member configured to restrict movement of the plurality of inner-tooth pins in the axial direction,wherein the restriction member is mounted to the outer cylinder on an outer side of the outer cylinder.2. The gear device according to claim 1 , wherein a length of the outer cylinder in the axial direction is equal to a length of the plurality of inner-tooth pins.3. The gear device according to claim 1 , wherein the restriction member is formed in a ring shape.4. The gear device according to claim 2 , wherein the ...

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Номер записи: 24
18-01-2018 дата публикации

GEAR DEVICE

Номер: US20180017134A1
Автор: NAKAI Yuto, Nakamura Koji, Takahashi Masahiro
Принадлежит:

A gear device is provided with a carrier having a first member and a second member opposed to the first member in a rotation axis direction, a crankshaft configured to cause the carrier to rotate relative to an outer cylinder about a rotation axis, an insertion pin inserted into the first member and the second member, and a restriction member configured to restrict movement of the insertion pin. The insertion pin is housed in such a manner as to extend from a first hole over to a second hole, the first hole formed in the first member so as to extend through the first member, the second hole formed in the second member so as to correspond to the first hole. At least one of the first hole and the second hole has such a shape as to restrict movement of the insertion pin toward the second hole in the rotation axis direction. The restriction member is mounted in the first member so as to restrict movement of the insertion pin toward the first hole in the rotation axis direction. 1. A gear device , comprising: a first member; and', 'a second member opposed to the first member in a direction of a rotation axis;, 'a carrier havinga crankshaft configured to cause relative rotation between an outer cylinder and the carrier about the rotation axis;an insertion pin inserted into the first member and the second member; anda restriction member configured to restrict movement of the insertion pin,wherein the insertion pin is housed in such a manner as to extend from a first hole over to a second hole, the first hole formed in the first member so as to extend through the first member, the second hole formed in the second member so as to correspond to the first hole,at least one of the first hole and the second hole has such a shape as to restrict movement of the insertion pin toward the second hole in the rotation axis direction, andthe restriction member is mounted in the first member so as to restrict movement of the insertion pin toward the first hole in the rotation axis ...

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Номер записи: 25
16-01-2020 дата публикации

GEAR DEVICE

Номер: US20200018380A1
Автор: FURUTA Kazuya, MASUDA Tomohiko, YOSHIDA Shunsuke
Принадлежит:

The present application discloses a gear device provided with: an outer cylinder; an internal member at least partially housed in the outer cylinder and configured to rotate relative to the outer cylinder about a predetermined rotation axis; a first main bearing fitted into an annular space formed between the outer cylinder and the internal member; and a second main bearing fitted into the annular space and configured to define the rotation axis in cooperation with the first main bearing. A distance between a first intersection where a load action line of the first main bearing intersects with the rotation axis and a second intersection where a load action line of the second main bearing intersects with the rotation axis is set to fall within a range expressed by a predetermined inequality expression. 1. A gear device , comprising:an outer cylinder including an inner peripheral surface where a plurality of internal teeth are formed;an internal member at least partially housed in the outer cylinder and configured to rotate relative to the outer cylinder about a predetermined rotation axis, the internal member including a gear having a plurality of external teeth meshed with the plurality of internal teeth;a first main bearing fitted into a first annular space formed between the outer cylinder and the internal member; anda second main bearing fitted into a second annular space between the outer cylinder and the internal member, the second annular space being different from the first annular space,wherein the outer cylinder includes a tubular case and an annular flange portion protruding outward from the case,each of a load action line of the first main bearing and a load action line of the second main bearing passes through the case and the flange portion in a consecutive manner, andan intersection between the load action line of the first main bearing and the load action line of the second main bearing is positioned in the flange portion.2. A gear device , comprising ...

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Номер записи: 26
16-01-2020 дата публикации

ROTARY FEED-THROUGH HAVING A GEARING

Номер: US20200018381A1
Автор: CZYMEK Guntram, HOESCHEN Daniel
Принадлежит:

A rotary feedthrough includes a first shaft connected to a first gear via a coupling and a second shaft configured to be mounted in a housing and fixedly connected to a second gear. One of the first gear and the second gear is an external gear with i teeth and the other of the first gear and the second gear is an internal gear with i+x teeth, where i=3, 4 . . . n and x=1, 2 . . . n. The external gear is arranged inside the internal gear. The rotary feedthrough further includes a coupling configured to couple a gear to the first shaft in such a way that a rotational movement of the shaft leads to an eccentric movement of the gear coupled thereto. In addition, the rotary feedthrough includes a seal configured to connect the gear coupled to the first shaft to the housing. 1. A rotary feedthrough , comprising:a first shaft connected to a first gear via a coupling;a second shaft configured to be mounted in a housing and fixedly connected to a second gear, wherein one of the first gear and the second gear is an external gear with i teeth and the other of the first gear and the second gear is an internal gear with i+x teeth, where i=3, 4 . . . n and x=1, 2 . . . n, and wherein the external gear is arranged inside the internal gear and is able to roll therein,a coupling configured to couple the first gear to the first shaft in such a way that a rotational movement of the first shaft leads to an eccentric movement of the first gear coupled thereto, anda seal configured to connect the first gear coupled to the first shaft to the housing.2. The rotary feedthrough according to claim 1 , wherein an eccentric or an angled shaft is the coupling.3. The rotary feedthrough according to claim 2 , further comprising an eccentric comprising a groove and with a gear comprising a pin.4. The rotary feedthrough according to claim 1 , wherein the seal comprises at least one bellows.5. The rotary feedthrough according to claim 1 , wherein the second shaft is mounted in the housing and is ...

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Номер записи: 27
16-01-2020 дата публикации

GEARED MOTOR AND ROBOT COMPRISING SAID GEARED MOTOR

Номер: US20200018382A1
Автор: MOMOSE Yosuke
Принадлежит: NIDEC COPAL CORPORATION

A motor portion wherein a driveshaft protrudes from the front end of a motor case; a gear mechanism portion is provided on the front side of the motor portion; and a connecting member, between the motor portion and the gear mechanism portion, for connecting these coaxially, wherein: the angle of rotation or rotational speed, or the like, of the driveshaft can be detected through a detecting portion. 1. A geared motor comprising: a motor case; and', 'a driveshaft protruding from a front end of a motor case;, 'a motor portion comprisinga gear mechanism provided on the front side of the motor portion;a connecting member, between the motor portion and the gear mechanism, connecting these coaxially; anda detector detecting rotation of the driveshaft provided on the connecting member.2. The geared motor as set forth in claim 1 , wherein:the connecting member is formed in a cylindrical shape through which the driveshaft is passed,the detector that protrudes to an outside in the radial direction is provided within the connecting member,the detector is provided on a peripheral wall of the connecting member.3. The geared motor as set forth in claim 2 , further comprising:a pass through-type supporting hole supporting the detector, through insertion thereof from the outside, is provided in a peripheral wall of the connecting member;wherein the detector is exposed to the outside through the supporting hole.4. The geared motor as set forth in claim 2 , further comprising:a detection gear member provided on the driveshaft;wherein the detection gear member comprises, integrally, a detection portion and a driving gear transmitting rotational force to the gear mechanism.5. The geared motor as set forth in claim 4 , wherein:the gear mechanism comprises a cylindrical gear case comprising a second gear mechanism relaying rotation of the driveshaft structured in the interior thereof,a plurality of engaging pieces that protrude rearward are provided on a peripheral wall of the gear case ...

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Номер записи: 28
26-01-2017 дата публикации

TRANSMISSION ASSEMBLY FOR A HYBRID VEHICLE EQUIPPED WITH A PENDULUM DAMPER

Номер: US20170021713A1
Автор: LEBAS Gilles, LEBEAU Fabien
Принадлежит:

A transmission assembly for a motor vehicle is to be arranged between a combustion engine having a crankshaft and a gearbox having an input shaft. The assembly comprises an electric machine having an external stator and an internal rotor rotationally movable. The rotor has a central opening. An intermediate shaft passes through the central opening to be connected kinematically to the crankshaft and to the input shaft of the gearbox. A mechanical reducer is configured to rotationally couple the rotor and the intermediate shaft so that the rotation speed of the rotor is higher than the rotation speed of the intermediate shaft. A pendulum damper has a rotationally movable support member, and pendulum flyweights are mounted movably on the support member. The support member is rotationally integral with the rotor. 1. A transmission assembly for a motor vehicle , intended to be arranged between a combustion engine having a crankshaft and a gearbox having an input shaft , said assembly comprising:{'b': '7', 'a support element ();'}{'b': 1', '2', '7', '3', '3, 'an electric machine () having a stator () carried by the support element () and a rotor () rotationally movable around an axis X, said rotor () having a central opening;'}{'b': 4', '3, 'an intermediate shaft () passing through the central opening of the rotor () and intended on the one hand to be connected kinematically to the crankshaft of the combustion engine and on the other hand to be connected kinematically to the input shaft of the gearbox;'}{'b': 17', '3', '4', '3', '4, 'a mechanical reducer () configured to rotationally couple the rotor () and the intermediate shaft () in such a way that the rotation speed of the rotor () is higher than the rotation speed of the intermediate shaft (); and'}{'b': 27', '29', '30', '28', '29', '30', '29', '30', '3, 'a pendulum damper () having a support member (, ) rotationally movable around the axis X, and pendulum flyweights () mounted movably on the support member (, ), the ...

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Номер записи: 29
28-01-2016 дата публикации

PLANETARY GEAR SYSTEM

Номер: US20160025187A1
Автор: Stoakes Timothy S., Vertenten Daniel P.
Принадлежит: CATERPILLAR INC.

A planetary gear system with floating components includes design features that center the floating components radially and reduces sagging of the floating components under the force of gravity. An input carrier is centered by the use of an annular bearing in a distal central opening of the input carrier and a stationary end cap assembly that is received in the annular bushing. The bushing and end cap assembly support the input carrier radially. The stationary output carrier is centered by providing a pilot on the output carrier that is received in a circumferential recess in a fixed component, such as a reaction hub. 1. A planetary gear system connected to a fixed component , the planetary gear system comprising:an input component having a primary axis and coupled to an input gear set, the input gear set meshed with an input set of teeth of a ring gear that surrounds the input gear set;the ring gear including an output set of teeth, the output set of teeth meshed with at least one output planet gear, the at least one output planet gear rotatably coupled to a stationary output carrier; andthe stationary output carrier coupled to the fixed component with a tongue in groove connection that is transverse to the primary axis.2. The planetary gear system of wherein the fixed component includes a circumferential recess that extends around the fixed component and about the primary axis claim 1 , the stationary output carrier includes a radially inwardly extending pilot that extends around the stationary output carrier and that is received in the circumferential recess of the fixed component.3. The planetary gear system of wherein the stationary output carrier further includes radially inwardly facing splines that extend around the stationary output carrier claim 1 , andthe fixed component includes radially outwardly facing splines that extend around the fixed component and that enmesh with splines of the stationary output carrier.4. The planetary gear system of wherein the ...

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Номер записи: 30
28-01-2021 дата публикации

Drive Unit for Robotic Manipulators

Номер: US20210023699A1
Автор: Robert Darby
Принадлежит: Individual

In one form there is disclosed an internally balanced involute-type speed reducer; the reducer comprising a stator stage, an input stage, an output stage, and a plurality of gear sets in mesh. In a further form there is disclosed an actuator assembly for a robot; said actuator assembly comprising a stator core located within an outer housing and subtended by inner and outer mounting hubs; said hub supporting a drive train and bearings within the actuator assembly. In a further form there is disclosed a transducer system operable in conjunction with the reducer or actuator assembly.

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Номер записи: 31
24-01-2019 дата публикации

TRANSMISSION DEVICE FOR SPLITTING TORQUE BETWEEN TWO COAXIAL GEARS, IN PARTICULAR FOR A PLANETARY GEARING FOR AERONAUTIC APPLICATIONS, AND METHOD FOR MANUFACTURING AND ASSEMBLING SAID TRANSMISSION DEVICE

Номер: US20190024755A1
Автор: FACCHINI Marco, GRAVINA Michele
Принадлежит:

A transmission device for splitting torque between two coaxial gears, in particular for a planetary gearing for aeronautic applications, has a motion input member and two transmission members, which are coaxial and have respective shafts provided with gears at an axial end and respective external flanges, at the opposite axial end; the two flanges are axially facing and placed abutting against each other, and are fixed to the motion input member so as to split the torque transmitted from the motion input member between the two flanges; one of the two shafts is axially hollow and houses, with radial clearance, an intermediate portion of the other shaft; the latter is formed by at least two pieces which are coaxial and fixed to each other. 1. A transmission device for splitting torque between two coaxial gears , in particular for a planetary gearing for aeronautic applications , the device comprising:a motion input member;a first and a second transmission member, which are coaxial to each other and to said motion input member along a longitudinal axis and comprise:a) a first and, respectively, a second shaft having a first gear and, respectively, a second gear at an axial end;b) a first and, respectively, a second flange, which radially protrude outwards from said first and second shafts, at an axial end opposite to said first and second gears, are axially facing and placed abutting against each other, and are fixed to said motion input member so as to split the torque transmitted from said motion input member between said first and second flanges;said second shaft being axially hollow; said first shaft comprising a first intermediate portion having an outside diameter smaller than the inside diameter of said second shaft and housed in said second shaft with radial clearance;wherein that said first shaft is formed by at least two pieces which are coaxial and fixed to each other.2. The device according to claim 1 , wherein said two pieces are welded to each other.3. ...

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Номер записи: 32
24-01-2019 дата публикации

TRANSMISSION DEVICE FOR DIVIDING THE TORQUE BETWEEN TWO COAXIAL GEARS, IN PARTICULAR FOR A PLANETARY GEAR TRAIN FOR AERONAUTICAL APPLICATIONS

Номер: US20190024756A1
Автор: GRAVINA Michele
Принадлежит:

A transmission device to divide torque between gears. The device comprising a coaxial motion input member and transmission members and comprising shafts having gears at an axial end. Flanges which project radially outwards from the shafts, at the opposite axial end with respect to the gears, are axially facing and arranged abutting against each other, and are fixed to the motion input member to divide the torque transmitted by the motion input member between the flanges. The second shaft being axially hollow. The first shaft comprising a first intermediate portion having an outside diameter smaller than the inside diameter of the second shaft and housed at least with radial clearance in the second shaft. The flanges comprise respective portions configured to deform under the action of forces acting between the motion input member and the gears to enable a fluctuation of the shafts with respect to an axis. 1. A transmission device to divide the torque between two coaxial gears , in particular for a planetary gear train for aeronautical applications , the device comprising a motion input member and a first and a second transmission member , which are coaxial to each other and to said motion input member along a longitudinal axis (A) and comprise:a first and, respectively, a second shaft having a first gear and, respectively, a second gear at an axial end;a first and, respectively, a second flange, which project radially outwards from said first and second shaft, at the opposite axial end with respect to said first and second gear, are axially facing and arranged abutting against each other, and are fixed to said motion input member so as to divide the torque transmitted by said motion input member between said first and second flange;at least said second shaft being axially hollow; said first shaft comprising a first intermediate portion having an outside diameter smaller than the inside diameter of said second shaft housed at least with radial clearance (G1) in said ...

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Номер записи: 33
23-01-2020 дата публикации

GEARING ARRANGEMENT AND METHOD FOR MANUFACTURING THE GEARING ARRANGEMENT

Номер: US20200025103A1
Автор: KRUEGER David, NIQUE Michael, SCHWENGLER Jonas
Принадлежит:

A gearbox assembly for a gas turbine engine comprises a planetary gearbox having at least one ring gear and at least one planet gear, which exerts a force on the ring gear in the direction of a force vector as it rolls on said ring gear; and a holding device for fastening the at least one ring gear on another structure, having a first section, which extends in the axial direction on one side of the force vector and/or of a straight-line extension thereof, and having a second section, which extends in the axial direction on the other side of the force vector and/or of the straight-line extension thereof. A gas turbine engine and a method for producing a gearbox assembly are furthermore made available. 1. A gearbox assembly for a gas turbine engine , comprising:a planetary gearbox having at least one ring gear and at least one planet gear, which exerts a force on the ring gear in the direction of a force vector as it rolls on said ring gear; anda holding device for fastening the at least one ring gear on another structure, having a first section, which extends in the axial direction on one side of the force vector and/or of a straight-line extension thereof, and having a second section, which extends in the axial direction on the other side of the force vector and/or of the straight-line extension thereof.2. The gearbox assembly according to claim 1 , wherein the first and the second section each have a rotational stiffness claim 1 , wherein the ratio of these rotational stiffnesses is 1.0+/−0.2 claim 1 , in particular 1.0+/−0.1 claim 1 , in particular 1.0+/−0.05.3. The gearbox assembly according to claim 1 , wherein the first section connects the at least one ring gear to the second section and is connected or can be connected via the second section to the other structure.4. The gearbox assembly according to claim 1 , wherein the planetary gearbox has helical gearing claim 1 , in particular double helical gearing.5. The gearbox assembly according to claim 4 , wherein ...

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Номер записи: 34
23-01-2020 дата публикации

ECCENTRICALLY OSCILLATING TYPE REDUCTION GEAR

Номер: US20200025277A1
Автор: TAMURA Mitsuhiro, YAMAMOTO Akira
Принадлежит:

An eccentrically oscillating type reduction gear includes an internal gear, an external gear which meshes with the internal gear, and an eccentric body which oscillates the external gear. The external gear is formed of a resin, and the internal gear has an internal gear main body which is formed of a resin, and an outer pin which is rotatably disposed in a pin groove provided in the internal gear main body and is formed of a material having a thermal conductivity higher than that of the resin constituting the internal gear main body. 1. An eccentrically oscillating type reduction gear comprising:an internal gear;an external gear which meshes with the internal gear; andan eccentric body which oscillates the external gear,wherein the external gear is formed of a resin, andwherein the internal gear has an internal gear main body which is formed of a resin, and an outer pin which is rotatably disposed in a pin groove provided in the internal gear main body and is formed of a material having a thermal conductivity higher than that of the resin constituting the internal gear main body.2. The eccentrically oscillating type reduction gear according to claim 1 , further comprising:a casing which integrally rotates with the internal gear;a carrier which rotates relative to the casing; anda main bearing which is disposed between the casing and the carrier,wherein an outer ring of the main bearing is formed of a material having a thermal conductivity higher than that of the resin constituting the internal gear main body, andwherein the outer ring of the main bearing and the outer pin abut against each other in an axial direction or abut against each other via a spacer formed of a material having a thermal conductivity higher than that of the resin constituting the internal gear main body.3. The eccentrically oscillating type reduction gear according to claim 2 ,wherein a rolling element and an inner ring of the main bearing are formed of a material having a thermal conductivity ...

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Номер записи: 35
23-01-2020 дата публикации

Planetary Transmission Having Planet Carrier With Thrust Plate Configured To Aid In Retaining Pins To Carrier Body

Номер: US20200025287A1
Автор: BOLTON Lee V., HURIN Shane E.
Принадлежит:

A planetary transmission with a carrier body, a plurality of pins, a retaining ring and a thrust plate. The carrier body defines a plurality of pin apertures, which are disposed concentrically about a central axis, and a ring groove into which the retaining ring is received. Each of the pins has a stepped axial end that defines first and second axial end surfaces that are spaced apart from one another. The pins are received into the pin apertures such that the first axial end surface extends from the carrier body. The thrust plate has a plate body and a plurality of tabs that extend radially outwardly from the plate body. Each of the tabs overlies the second axial end surface of an associated one of the pins such that the thrust plate is disposed along the central axis between the second axial end surfaces and the retaining ring. 1. A planetary transmission comprising:a carrier body having first and second plate members, each of the first and second plate members defining a plurality of pin apertures that are disposed concentrically about a central axis, the second plate member defining a retaining ring groove;a plurality of pins, each of the pins having a longitudinal pin axis and a stepped axial end that defines first and second axial end surfaces that are spaced apart from one another along the longitudinal pin axis, each of the pins being received into a respective one of the pin apertures in the first plate member and a respective one of the pin apertures in the second plate member such that the first axial end surface extends from the second plate member on a side of the second plate member opposite the first plate member;a retaining ring received in the retaining ring groove; anda thrust plate having a plate body and a plurality of tabs that extend radially outwardly from the plate body, each of the tabs overlying the second axial end surface of an associated one of the pins such that the thrust plate is disposed along the central axis between the second ...

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Номер записи: 36
28-01-2021 дата публикации

PLANETARY GEARBOX HAVING SINGLE-TOOTH SUN GEAR HAVING EVOLOID TOOTHING

Номер: US20210025479A1
Автор: Maul Hans-Erich
Принадлежит:

A planetary gearbox includes a sun gear having one tooth, a ring gear, planet gears, and a planet carrier on which the pant gears are rotatably arranged. Each of the sun gear, the planet gears, and the ring gear have evoloid toothing. The planetary gearbox enables high load capacity at high transmission ratios by using three circulating planetary gears in the ring gear, which is frame-fixed. The planet gears do not hit each other at a high transmission ration of i=24:1 because of defined addendum modification coefficients and addendum coefficients of the individual gears of the planetary gearbox. 113.-. (canceled)14. A planetary gearbox , comprising{'sub': 'aP', 'a sun gear having a number of teeth is z=1, a positive addendum modification coefficient x that falls within a range of 1.4 to 1.6, and an addendum coefficient hthat falls within the range of 0.1 to 0.2;'}{'sub': 'aP', 'a ring gear that is frame-fixed, the ring gear having a negative addendum modification coefficient x that falls within the range of −0.8 to −1.0 and an addendum factor hthat falls within the range of 1.3 to 1.5;'}{'sub': 'aP', 'three planet gears, each of the three planet gears having a negative addendum modification coefficient x that falls within the range of −0.2 to −0.4 and an addendum height coefficient hthat falls within the range of 0.5 to 0.7; and'}a planet carrier on which the three planet gears are rotatably arranged, thewherein the sun gear, the three planet gears, and the ring gear each have evoloid toothing.15. The planetary gearbox as claimed in claim 14 , wherein each of the three planetary gears mate with the ring gear via a first path of contact and with the sun gear via a second path of contact claim 14 , andan operating angle of contact of the first path of contact coincides with an operating angle of contact of the second path of contact.16. The planetary gearbox as claimed in claim 14 , wherein the planet gears are rotatably mounted on the planet carrier via needle ...

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Номер записи: 37
01-02-2018 дата публикации

GEAR DEVICE

Номер: US20180031079A1
Автор: FURUTA Kazuya, MASUDA Tomohiko, YOSHIDA Shunsuke
Принадлежит:

The present application discloses a gear device provided with: an outer cylinder; an internal member at least partially housed in the outer cylinder and configured to rotate relative to the outer cylinder about a predetermined rotation axis; a first main bearing fitted into an annular space formed between the outer cylinder and the internal member; and a second main bearing fitted into the annular space and configured to define the rotation axis in cooperation with the first main bearing. A distance between a first intersection where a load action line of the first main bearing intersects with the rotation axis and a second intersection where a load action line of the second main bearing intersects with the rotation axis is set to fall within a range expressed by a predetermined inequality expression. 1. A gear device , comprising:an outer cylinder;an internal member at least partially housed in the outer cylinder and configured to rotate relative to the outer cylinder about a predetermined rotation axis;a first main bearing fitted into an annular space formed between the outer cylinder and the internal member; anda second main bearing fitted into the annular space and configured to define the rotation axis in cooperation with the first main bearing, {'br': None, 'i': BBD+BRD×', '−IID', 'BBD+BRD×, '(2)×0.95<(2)×1.05 \u2003\u2003(Expression 1)'}, 'wherein a distance between a first intersection where a load action line of the first main bearing intersects with the rotation axis and a second intersection where a load action line of the second main bearing intersects with the rotation axis is set to fall within a range expressed by an inequality expression below.'}IID: Distance Between First Intersection and Second IntersectionBBD: Distance Between First Main Bearing and Second Main BearingBRD: Distance Between First Main Bearing and Rotation Axis2. A gear device , comprising:an outer cylinder;an internal member at least partially housed in the outer cylinder and ...

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Номер записи: 38
31-01-2019 дата публикации

BICYCLE CRANK TRANSMISSION APPARATUS

Номер: US20190031285A1
Автор: JANG Sa Seok
Принадлежит:

A bicycle crank transmission apparatus includes: a hollow shaft member; a base plate coupled to the shaft member on one side and installed securely on a bottom bracket featuring a spindle on the other side; a chainring housing coupled to the shaft member in a way that allows its rotation and having a ring gear installed securely inside; a reduction gear unit arranged in the middle of the ring gear; a directly-coupled ratchet unit installed on the ring gear; a crank cover where a coupling shaft coupled to the spindle is perpendicularly provided in the center and where clutch ratchet teeth, which are engaged with the directly-coupled ratchet unit, and directly-coupled ratchet teeth are vertically stacked on the internal wall surface; and a sun gear installed on the coupling shaft in such a way that it only rotates in clockwise direction and partially engaged with the reduction gear unit. 1. A bicycle crank transmission apparatus comprising:a hollow shaft member;a base plate which is coupled to the aforementioned shaft member on one side and installed securely on a bottom bracket featuring a spindle on the other side;a chainring housing which is coupled to the aforementioned shaft member in a way that allows its rotation and has a ring gear installed securely inside;a reduction gear unit arranged in the middle of the aforementioned ring gear, in which the aforementioned reduction gear unit is securely installed on the aforementioned shaft member, consists of an eccentric guide arranged in the center of the aforementioned ring gear and an eccentric gear provided to rotate along the external circumference of the aforementioned eccentric guide and having its teeth extend in one direction, and has the aforementioned ring gear engaged with the outer part of the teeth of the aforementioned eccentric gear far away from the eccentric hole of the aforementioned eccentric guide;a directly-coupled ratchet unit installed on the aforementioned ring gear which consists of multiple ...

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Номер записи: 39
04-02-2021 дата публикации

Cordless blind device

Номер: US20210032931A1
Автор: Seong-Ryong Jang
Принадлежит: Wintec Korea Inc

A cordless blind device that can be operated in various types such as manual, semiautomatic, and automatic types is proposed. The cordless blind device includes: a winding roll, a screen, a driving motor, a weight connected to a lower end of the screen; a torsion spring applying torque in a direction in which the screen is wound; and a rotation conversion module transmitting power in two directions between the driving motor and the winding roll, in which when the driving motor does not generate driving force, the torque applied by the torsion spring, the torque applied by the weight, and resistance by the rotation conversion module and the driving motor make equilibrium, so the screen remains stopped, and when an external force is applied upward or downward to the weight, the equilibrium of the forces breaks, so the screen is wound on or unwound from the winding roll.

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Номер записи: 40
08-02-2018 дата публикации

VALVE TIMING ADJUSTMENT DEVICE

Номер: US20180038246A1
Автор: OTSUBO Makoto, Takahashi Hiroki, TODA Shota
Принадлежит:

A planetary rotor includes: a planetary gear engaged with a driving rotor and a driven rotor on an eccentric side; and a single sequence type planetary bearing having an outer ring held by the planetary gear, an inner ring supported by a planetary carrier in the radial direction and receiving a restoring force from an elastic component, and a plurality of spherical rolling elements interposed between the outer ring and the inner ring. The outer ring is arranged to form a rolling contact part in contact with the spherical rolling element on the eccentric side, with a contact angle to a specific side in the axial direction. A thrust-bearing part where the driving rotor is supported by the driven rotor on the specific side and on the eccentric side is located closer to a rotation center line of the driven rotor than the rolling contact part is. 1. A valve timing adjustment device that adjusts valve timing of a valve opened and closed by a camshaft by a torque transfer from a crankshaft for an internal combustion engine , the valve timing adjustment device comprising:a driving rotor that rotates with the crankshaft;a driven rotor that rotates with the camshaft in a state where the driven rotor supports the driving rotor at both sides in an axial direction as a thrust bearing, and where the driven rotor supports the driving rotor from an inner side in a radial direction as a radial bearing, the driven rotor being connected coaxially with the camshaft;a planetary rotor arranged eccentric to the driving rotor and the driven rotor, the planetary rotor controlling a rotation phase between the driving rotor and the driven rotor by carrying out planetary movement under a gear engagement state in which the planetary rotor is engaged with the driving rotor and the driven rotor from an inner side in the radial direction on the eccentric side;a planetary carrier that causes the planetary movement of the planetary rotor under a state where the driving rotor is supported from the ...

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Номер записи: 41
24-02-2022 дата публикации

BALANCED SPEED REDUCER OF DUAL-RING GEAR VARIABLE-LINE-SPEED PLANETARY ROW

Номер: US20220056987A1
Автор: LUO Can
Принадлежит:

A balanced speed reducer of a dual-ring gear variable-line-speed planetary row includes a dual-ring gear variable-line-speed planetary row, an input end (), an output end (), a locking end (), and auxiliary devices such as bearings. The dual-ring gear planetary row includes a left ring gear (), a right ring gear (), and a planet carrier (). A left planetary gear () and a right planetary gear () that are connected on each planetary gear shaft have the same rotation speed. The left planetary gear () meshes with the left ring gear (), and the right planetary gear () meshes with the right ring gear (). The number of gear sets is not less than two. A teeth number combination and a number of gear sets are set according to a range specifying parameter and following a principle of matching the teeth number combination with the number of gear sets. A rule for manufacturing and assembling planetary gears is executed. A regulation on gear reference circle radii is executed. By connecting the planetary carrier () to the input end (), connecting one ring gear to the output end (), and connecting the other ring gear to the locking end (), a speed reducer that has a corresponding left transmission ratio and right transmission ratio, can be actually assembled and provides balanced operation is formed. 1. A balanced speed reducer of a dual-ring gear variable-line-speed planetary row , comprising a dual-ring gear variable-line-speed planetary row , an input end , an output end , a locking end and a bearing auxiliary device , characterized in that , the dual-ring gear variable-line-speed planetary row comprises a left ring gear , a right ring gear and a planet carrier with planetary gears , the planet carrier supports the planetary gears , and distances from planetary gear axes to a revolution axis , i.e. , the reference center distances , are equal; on a gear axis of each planetary gear , two gears , namely , a left planetary gear and a right planetary gear , are arranged in sequence ...

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Номер записи: 42
18-02-2021 дата публикации

Modular gear transmission and associated system

Номер: US20210048097A1
Автор: David Aaron Yanoshak, Francisco Musiol Lima, Gregory Elliott Needel, Jonathan James Bryant, Michael Andrew Kaurich
Принадлежит: REV Robotics LLC

A modular gear transmission and associated systems. The modular gear transmission has an assembled configuration, and the modular gear transmission comprises a first transmission body and a first transmission gear set. The first transmission gear set comprises a first protruding gear, a first intermediate gear set comprising at least one intermediate transmission gear, and a first transmission socket. The first transmission body is configured so that, when the modular gear transmission is in the assembled configuration, the first transmission body engages the first transmission gear set to hold the first transmission gear set in a rotatable configuration. The first protruding gear is configured so that, when the modular gear transmission is in the assembled configuration, the first protruding gear protrudes from the first transmission body and is rotatably engaged with the first intermediate gear set, the first protruding gear configured to rotate around a first referential axis of rotation.

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Номер записи: 43
18-02-2016 дата публикации

GEAR TRANSMISSION

Номер: US20160047418A1
Автор: Kataoka Yusuke, MATSUI Daisuke
Принадлежит:

A carrier is supported by a case via a bearing. The bearing comprises an inner race, an outer race, rollers, and a retainer. The inner race has a tapered outer peripheral surface, and is fixed to a carrier. The outer race has a tapered inner peripheral surface facing the outer peripheral surface of the inner race, and is fixed to the case. The rollers is disposed between the inner race and the outer race. An end part of the retainer having a larger diameter makes contact with the case via a first member. The larger diameter end part of the retainer makes contact with the case via a second member. By the retainer making contact with the case and the carrier via the first member and the second member, the retainer can reduce friction compared to when making direct contact with the case and the carrier. 1. A gear transmission having a carrier supported on a case via a bearing , whereinthe bearing comprises:an inner race having a tapered outer peripheral surface, and being attached to one of the case and the carrier;an outer race having a tapered inner peripheral surface, and being attached to the other of the case and the carrier, the tapered inner peripheral surface facing the outer peripheral surface of the inner race;a plurality of cylindrical rollers disposed between the inner race and the outer race; anda ring-shaped retainer disposed between the inner race and the outer race, and maintaining spacing between adjacent rollers,wherein a first member is fixed to the case between the case and the retainer,a second member is fixed to the carrier between the carrier and the retainer,an end part of the retainer having a larger diameter makes contact with the case via the first member, and makes contact with the carrier via the second member,friction that occurs between the first member and the retainer is smaller than friction that occurs when the retainer makes contact with the case without using the first member, andfriction that occurs between the second member and ...

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Номер записи: 44
16-02-2017 дата публикации

TWO-STAGE HYPOCYCLOIDAL GEAR TRAIN

Номер: US20170045118A1
Автор: Bartlett Glynn R., HVASS Paul B.
Принадлежит:

A gear train including a rotatable drive shaft and a clutch roller in rotatable contact with the drive shaft or mounted on the drive shaft. A first wobble gear and a second wobble gear are suspended around the drive shaft, wherein the first wobble gear is affixed to and concentric with the second wobble gear and the clutch roller is preloaded against the first and second wobble gears. A first ring gear surrounding and engaged by the first wobble gear; and a second ring gear surrounding and engaged by the second wobble gear. The ring gears being coaxial and rotatable relative to one another. The drive shaft rotates the clutch roller, which drives the first and second wobble gears, such that the wobble gears rotate around the drive shaft and at least one of the first and second ring gears rotate around the common axis. 1. A gear train comprising:a rotatable drive shaft;a clutch roller in rotatable contact with said drive shaft or mounted on said drive shaft;a first wobble gear and a second wobble gear suspended around said drive shaft, wherein said first wobble gear is affixed to and concentric with said second wobble gear and said clutch roller is preloaded against said first and second wobble gears;a first ring gear surrounding and engaged by said first wobble gear; anda second ring gear surrounding and engaged by said second wobble gear, the first ring gear and second ring gear sharing a common axis and are rotatable relative to one another;wherein said drive shaft rotates said clutch roller and said clutch roller drives said first wobble gear and said second wobble gear, such that said wobble gears rotate around said drive shaft and at least one of said first ring gear and said second ring gear rotates around said common axis, andwherein said clutch roller deforms and slips upon application of a torque to said clutch roller greater than a rated torque.2. The gear train of claim 1 , wherein said rated torque is in the range of 50 N-m to 200 N-m.3. The gear train of ...

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Номер записи: 45
03-03-2022 дата публикации

PLANETARY GEARBOX

Номер: US20220065172A1
Автор: GORENZ Paul, SCHWARZE Jan, WUESTENBERG Hannes
Принадлежит:

A planetary gear box (and method of assembly), where the gear box includes a sun gear, a plurality of planet gears, a ring gear, a plurality of planet pins, an axially forward carrier plate and an axially rearward carrier plate. Each planet pin is fixed respectively at its axially forward end on the axially forward carrier plate and at its axially rearward end on the axially rearward carrier plate of the planetary gear box. The planet pin is of two-part design and forms a radially outer pin part and a radially inner pin part, which are connected to one another in a manner precluding relative rotation therebetween, wherein the radially outer pin part forms a bearing with the planet gear, and only the radially inner pin part is fixed at its axial ends to the forward and rearward carrier plates.

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Номер записи: 46
03-03-2022 дата публикации

Balanced speed reducer of variable line speed planetary row having double sun gears

Номер: US20220065328A1
Автор: Can Luo
Принадлежит: Individual

A balanced speed reducer of a dual-sun gear variable-line-speed planetary row includes a dual-sun gear variable-line-speed planetary row, an input end an output end, a locking end, and auxiliary devices such as bearings. The dual-sun gear planetary row includes a left sun gear:, a right sun gear, and a planet carrier. A left planetary gear and a right planetary gear that are connected on each planetary gear shaft have the same rotation speed. The left planetary gear meshes with the left sun gear, and the right planetary gear meshes with the right sun gear. The number of gear sets is not less than two. A teeth number combination and a number of gear sets are set according to a range specifying parameter and following a principle of matching the teeth number combination with the number of gear sets.

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Номер записи: 47
03-03-2022 дата публикации

SPEED REDUCER AND DRIVE DEVICE

Номер: US20220065329A1
Автор: NAKAI Yuto, Takahashi Masahiro
Принадлежит:

A speed reducer according to the present invention includes: at least one gear member for changing a speed of rotations input from a rotary device and outputting the rotations; a case housing the gear member; and a heating unit provided on the case and configured to heat the case or an inside of the case.

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Номер записи: 48
14-02-2019 дата публикации

CYCLOIDAL REDUCER WITH BACKLASH SELF-ADJUSTMENT AND POWER STEERING SYSTEM WITH SUCH A REDUCER

Номер: US20190047610A1
Автор: Rey Laurent
Принадлежит: JTEKT EUROPE

A cycloidal gear pair reducer including an input shaft, mounted in a reducer casing such that it rotates about an axis referred to as “main axis”, an eccentric member carried by the input shaft and rotated by the latter, at least one cycloidal disc rotatably mounted on the eccentric member and having a cycloidal toothing, at least one ring gear provided with a receiving toothing with which the cycloidal toothing of the cycloidal disc meshes, and an output shaft; wherein the reducer comprises a suspension device arranged to return elastically the cycloidal toothing of the cycloidal disc and the receiving toothing of the ring gear towards one another such that the meshing backlash between the cycloidal disc and the ring gear is self-adjusted along at least one radial component relative to the main axis. 1. A cycloidal gear reducer comprising an input shaft , mounted in rotation in a reducer casing according to an axis called main axis , an eccentric member carried by the input shaft and driven in rotation by the latter , at least one cycloidal disk which is mounted in rotation on the eccentric member and which is provided with a cycloidal toothing , at least one rim provided with a receiving toothing on which the cycloidal toothing of the cycloidal disk meshes , and an output shaft , distinct from the input shaft , which is arranged so as to be driven in rotation by the cycloidal disk , the reducer being wherein it comprises a suspension device which is arranged to elastically bias the cycloidal toothing of the cycloidal disk and the receiving toothing of the rim against each other , so as to provide an automatic adjustment of the backlash between the cycloidal disk and the rim according to at least one component radial to the main axis.2. The reducer according to claim 1 , wherein the suspension device is carried by the input shaft and interposed radially between the input shaft and the cycloidal disk.3. The reducer according to claim 1 , wherein the suspension ...

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Номер записи: 49
25-02-2016 дата публикации

CURVED BEARING CONTACT SYSTEM

Номер: US20160053858A1
Автор: BRASSITOS Elias, KONG Qingchao, Mavroidis Constantinos, Weinberg Brian
Принадлежит:

In some embodiments, systems and methods are described for a gear contact system configured to support radial, thrust, and moment loads, the system comprising a first gear comprising a first roller having a first roller bearing surface, the first roller bearing surface having a convex curvature defined by a first radius of curvature; and a second gear comprising a second roller having a second roller bearing surface, the second roller bearing surface having a concave curvature defined by a second radius of curvature. 1. A gear contact system configured to support radial , thrust , and moment loads , the system comprising:a first gear comprising a first roller having a first roller bearing surface, the first roller bearing surface having a convex curvature defined by a first radius of curvature; anda second gear comprising a second roller having a second roller bearing surface, the second roller bearing surface having a concave curvature defined by a second radius of curvature, wherein the second radius of curvature is larger than the first radius of curvature,the second roller bearing surface of the second roller mating with the first roller bearing surface of the first roller at the pitch diameter of the two gears at at least a point, such that a line tangent to the point is at an angle with respect to the rotation axis of the first gear.2. The system of claim 1 , wherein the angle is between 0 and 90 degrees.3. The system of claim 1 , wherein the angle is between 30 and 60 degrees.4. The system of claim 1 , wherein the angle is between 40 and 50 degrees.5. The system of claim 1 , wherein the angle is 45 degrees.6. The system of claim 1 , wherein the roller bearing surfaces comprise a material capable of supporting high speed contact.7. The system of claim 6 , wherein the material comprises at least one of AMPCO 45 bronze claim 6 , stainless steel or Nitronic steel.8. The system of claim 1 , wherein the first radius of curvature claim 1 , the second radius of ...

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Номер записи: 50
25-02-2021 дата публикации

CHANGEABLE LINEAR SPEED REDUCTION CLUTCH

Номер: US20210054909A1
Автор: LUO Can
Принадлежит:

The present invention provides a changeable linear speed reduction clutch, which is formed by connecting a changeable linear speed double-layer planetary gear train and a brake, and is transmission machinery with functions of both a speed reducer and a clutch. A planetary carrier of the changeable linear speed double-layer planetary gear train is used as an input end, one central gear as an output end, the other central gear as a braking end, and the braking end is directly connected to the brake; and the changeable linear speed double-layer planetary gear train adopts one of two types of planetary gear trains. The brake at least has two states, that is, braking and non-braking states, wherein the braking state of the brake is equivalent to an engaged state of the clutch, and the non-braking state of the brake is equivalent to a disengaged state of the clutch. The method of setting the changeable linear speed double-layer planetary gear train, and the application method of the present invention are provided herein. Compared with a device in which a multi-stage speed reducer and a clutch are arranged independently, the changeable linear speed reduction clutch in the present invention is small and light and has a simple structure. 1. A changeable linear speed reduction clutch , which is formed by connecting a changeable linear speed double-layer planetary gear train and a brake and is transmission machinery with functions of both a speed reducer and a clutch , wherein the changeable linear speed double-layer planetary gear train according to the present invention is characterized in that: the pitch circle diameter of two central gears are very close but not equal; a planetary carrier of the changeable linear speed double-layer planetary gear train is used as an input end; one central gear as an output end and the other central gear as a braking end; the input end is also an input end of the present invention and the output end is also an output end of the present ...

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Номер записи: 51
10-03-2022 дата публикации

REDUCER FOR HIGH PRECISION CONTROL

Номер: US20220074466A1
Автор: LIU Weiwei
Принадлежит:

A reducer for high precision control includes a pin gear housing and two-stage reduction components disposed therein: a first-stage reduction component including an input shaft, a sun gear and a planet gear; and a second-stage reduction component including 2-3 eccentric shafts distributed uniformly, cycloidal gears, a pin, a left rigid disk and a right rigid disk, and bearings, wherein the cycloidal gears are supported by bearings on two eccentric sections of the eccentric shaft, shaft extensions on two sides of the eccentric section of the eccentric shaft are supported by bearings on the left rigid disk and the right rigid disk, and the left rigid disk and the right rigid disk are supported by bearings in inner holes of two sides of the pin gear housing. 119141564131235615687131213122191013121113124. A reducer for high precision control , comprising a pin gear housing () and two-stage reduction components disposed inside: a first-stage reduction component comprising an input shaft () , a sun wheel () and a planet gear (); and a second-stage reduction component comprising 2-3 eccentric shafts () distributed uniformly , cycloidal gears , a pin () , a left rigid disk () and a right rigid disk () , wherein the cycloidal gears comprise a left cycloidal gear () and a right cycloidal gear () , a shaft extension end of the eccentric shaft () is connected to the planet gear () , two eccentric sections of the eccentric shaft () are provided with a first bearing () which is used for supporting the cycloidal gears , shaft extensions on two sides of the eccentric section are supported by second bearings () in peripheral holes of the left rigid disk () and the right rigid disk () respectively , the left rigid disk () and the right rigid disk () are supported by third bearings () in inner holes of two sides of the pin gear housing () respectively , the input shaft () is supported by fourth bearings () in center holes of the left rigid disk () and the right rigid disk () ...

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Номер записи: 52
10-03-2022 дата публикации

Hollow reducer for high precision control

Номер: US20220074467A1
Автор: Weiwei Liu
Принадлежит: Suzhou Huazhen Industry RV Reducer Co Ltd

A hollow reducer for high precision control includes a pin wheel housing and two-stage reduction components disposed in the pin wheel housing. A first-stage reduction component includes a driving wheel on a servo motor, a dual gear, and a planet wheel; and a second-stage reduction component includes 2-3 eccentric shafts distributed uniformly, cycloidal gears, a pin, rigid disks, and bearings, wherein two eccentric sections of the eccentric shaft support the cycloidal gears by means of the bearings, shaft extensions on two sides of the eccentric section of the eccentric shaft are supported on the left and right rigid disks by the bearings, and the rigid disks are supported on two sides of the pin wheel housing by the bearings.

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Номер записи: 53
10-03-2022 дата публикации

Planetary gear actuator

Номер: US20220074468A1
Автор: Ji Won Seo, Seong Ho Yun, Yong Jae Kim
Принадлежит: Industry University Cooperation Foundation of Korea University of Technology and Education, Naver Labs Corp

A planetary gear actuator including a sun gear, a rotary internal gear being concentric with the sun gear, a fixed internal gear being concentric with the sun gear, compound planetary gears, and a carrier connected to each of the compound planetary gears so as to be rotatable relative to each of compound planetary gears may be provided, Each of the compound planetary gears may include a first planet gear engaged with the sun gear, a second planet gear at one side of the first planet gear, engaged with the rotary internal gear, and having a smaller number of teeth than the first planet gear, and a third planet gear at another side of the first planet gear, engaged with the fixed internal gear, and having a smaller number of teeth than the first planet gear. One compound planetary gear may overlap another compound planetary gear in a thickness direction.

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Номер записи: 54
04-03-2021 дата публикации

LOW-FLOOR ELECTRIC AXLE ASSEMBLY

Номер: US20210061093A1
Автор: CAI BING-KUN, HU JIA-YI, Li Hang, LI JIAN-QIU, XU LIANG-FEI
Принадлежит:

A low-floor electric axle assembly including: an axle housing, hub motors, planetary gear reducers, hubs, a brake system, C-shaped beams, and a suspension system. Mechanical mounting of the suspension system is compatible with a conventional axle, and arrangement manners of the brake system, the hub motors, and the planetary gear reducers are capable of expanding a width of a coach aisle. Each of the hub motors is arranged coaxially with a rim; a first-stage cylindrical gear drive, bevel gear drive, or hypoid gear drive is removed; an unconventional-structure planetary gear reducer is provided to ensure a high transmission ratio and transmission efficiency; the brake system is arranged at two ends of the axle and at inner sides of the motors, thereby making full use of space at the two ends of the axle, and forming the low-floor electric axle assembly. 1. A low-floor electric axle assembly , comprising:an axle housing, hub motors, planetary gear reducers, hubs, a brake system, C-shaped beams, and a suspension system, wherein mechanical mounting of the suspension system is compatible with a conventional axle;the axle housing has a left and right symmetrical dumbbell-shaped structure configured to bear a weight of a vehicle;the hub motors are inner rotor type motors and are separately arranged at two ends of the axle housing left and right symmetrically; each of the hub motors is arranged coaxially with a wheel; and a hub motor rotor is connected to the planetary gear reducer;each of the planetary gear reducers is a single-stage planetary gear reducer; a sun gear of the planetary gear reducer receives power outputted by the hub motor; and a planetary gear reducer housing is a power output end connected to a rim, to transmit the power to the wheel;each of the hubs is supported over a motor output shaft sleeve through a bearing, and is connected to the planetary gear reducer housing and the rim;the brake system is a disc mechanic brake powered by variable pneumatic ...

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Номер записи: 55
04-03-2021 дата публикации

PIVOTING SYSTEM, PIVOTING ASSEMBLY, PIVOTING MODULE AND SEAT COMPRISING THE PIVOTING SYSTEM

Номер: US20210061142A1
Автор: GAROTTE Gérald, Touzet Bertrand
Принадлежит:

A pivoting system comprising a first hinge mechanism comprising a first frame and a second frame connected together by a first hypocycloidal gear, the first gear comprising a first eccentric cam, a first set of teeth, and a second set of teeth, the first eccentric cam having a first eccentricity, a second hinge mechanism comprising a first frame and a second frame connected together by a second hypocycloidal gear, the second gear comprising a second eccentric cam, a first set of teeth, and a second set of teeth, the second eccentric cam having a second eccentricity equal to the first eccentricity, a control shaft configured to drive the first eccentric cam and the second eccentric cam in rotation. 1. A pivoting system comprising:a first hinge mechanism comprising a first frame and a second frame mounted so as to rotate relative to one another and connected together by a first hypocycloidal gear, the first gear comprising a first eccentric cam, a first set of teeth and a second set of teeth, the first set of teeth of the first hinge mechanism and the second set of teeth of the first hinge mechanism being circular and in mutual engagement, the first set of teeth of the first hinge mechanism being mechanically linked to the first frame of the first hinge mechanism and the second set of teeth of the first hinge mechanism being mechanically linked to the second frame of the first hinge mechanism, the first set of teeth of the first hinge mechanism being centered on a first axis and the second set of teeth of the first hinge mechanism being centered on a second axis, the first eccentric cam having a first eccentricity corresponding to the distance between the first axis and the second axis,a control shaft comprising a first drive portion configured to drive the first eccentric cam in rotation,a second hinge mechanism comprising a first frame and a second frame mounted so as to rotate relative to one another and connected together by a second hypocycloidal gear, the second ...

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Номер записи: 56
21-02-2019 дата публикации

SPEED REDUCER AND MOTOR WITH SPEED REDUCER

Номер: US20190056012A1
Автор: Uehara Hiroshi
Принадлежит:

To provide an inexpensive and thin motor with a speed reducer capable of elongating lifetime of bearings by reducing the effect of internal moments acting on an output member without using expensive bearings. A motor with a speed reducer performing output with a gear mechanism rotating to reduce speed around an electric motor M and an eccentric shaft driven to rotate by the electric motor M, in which a plurality of external gears are respectively assembled to the eccentric shaft at positions where moments obtained by multiplying distances in an axial direction from a position of a bearing provided in a speed reducer housing by magnitudes of loads acting on output pins at the positions are cancelled out with each other. 1. A speed reducer performing output with a gear mechanism rotating to reduce speed around an eccentric shaft driven to rotate by a drive source comprising:the eccentric shaft driven and transmitted by a drive source;an internal gear provided around an inner peripheral surface of a speed reducer housing;a plurality of external gears eccentrically assembled to the eccentric shaft and revolving around the eccentric shaft by meshing with the internal gear;through holes piercing in an axial direction provided on the plural external gears;output pins piercing while externally contacting the through holes, provided at plural positions in a circumferential direction along the eccentric shaft;an output member to which end portions of the output pins are connected and rotating to reduce speed with the revolution of the plural external gears through an outer bearing provided in the speed reducer housing,wherein the plural external gears are respectively assembled to the eccentric shaft at positions where moments obtained by multiplying distances “a”, “b”, and “c” in the axial direction from the position of a bearing center line L of the outer bearing provided in the speed reducer housing to the center positions of the respective external gears by magnitudes of ...

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Номер записи: 57
03-03-2016 дата публикации

ECCENTRIC OSCILLATION GEAR DEVICE AND TORQUE ADJUSTING METHOD THEREFOR

Номер: US20160061291A1
Автор: MIZUHASHI Hiroki
Принадлежит:

Disclosed is an eccentric oscillation gear device which comprises: an outer cylinder; a carrier provided with a motor installation section having an inside space; a main bearing configured to permit relative rotation between the outer cylinder and the carrier; a motor at least partly inserted into the inside space of the motor installation section; a spacer filling a gap between the motor installation section and the motor; and a crankshaft configured to be rotated in response to receiving a driving force from the motor, in such a manner as to cause relative rotation between the outer cylinder and the carrier. 1. An eccentric oscillation gear device comprising:an outer cylinder;a carrier provided with a motor installation section having an inside space;a main bearing configured to permit relative rotation between the outer cylinder and the carrier;a motor at least partly inserted into the inside space of the motor installation section;a spacer filling a gap between the motor installation section and the motor; anda crankshaft configured to be rotated in response to receiving a driving force from the motor, in such a manner as to cause relative rotation between the outer cylinder and the carrier.2. The eccentric oscillation gear device as defined in claim 1 , whereinthe motor installation section is formed into an annular shape; andthe spacer is formed into a tubular shape, wherein an outer peripheral surface of the spacer is in contact with an inner peripheral surface of the motor installation section, and an inner peripheral surface of the spacer is in contact with the motor.3. The eccentric oscillation gear device as defined in claim 1 , wherein the motor is composed of a radial gap motor.4. The eccentric oscillation gear device as defined in claim 1 , wherein each of the crankshaft and the motor installation section is provided plurally claim 1 , and whereinthe motor is fitted into at least one of the plurality of motor installation sections, andthe spacer is ...

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Номер записи: 58
03-03-2016 дата публикации

ECCENTRIC OSCILLATION GEAR DEVICE AND TORQUE ADJUSTING METHOD THEREFOR

Номер: US20160061292A1
Автор: IKEDA Jun, MIZUHASHI Hiroki
Принадлежит:

Disclosed is an eccentric oscillation gear device which comprises: an outer cylinder; a carrier provided with a plurality of motor installation sections; a main bearing configured to permit relative rotation between the outer cylinder and the carrier; one or more motors installed in a part of the plurality of motor installation sections; and a crankshaft configured to be rotated in response to receiving a driving force from the one or more motors, in such a manner as to cause relative rotation between the outer cylinder and the carrier. 1. An eccentric oscillation gear device comprising:an outer cylinder;a carrier provided with a plurality of motor installation sections;a main bearing configured to permit relative rotation between the outer cylinder and the carrier;one or more motors installed in a part of the plurality of motor installation sections; anda crankshaft configured to be rotated in response to receiving a driving force from the one or more motors, in such a manner as to cause relative rotation between the outer cylinder and the carrier.2. The eccentric oscillation gear device as defined in claim 1 , wherein the carrier is provided with a plurality of brake installation sections claim 1 , and wherein the eccentric oscillation gear device further comprises one or more brakes installed in a part of the plurality of brake installation sections and operable to prevent rotation of the crankshaft.3. The eccentric oscillation gear device as defined in claim 1 , wherein each of the motor installation sections has a shape having an inside space claim 1 , and wherein each of the one or more motors is inserted in the inside space of a corresponding one of the motor installation sections claim 1 , and wherein the eccentric oscillation gear device further comprises a spacer filling a gap between the motor and the corresponding motor installation section.4. The eccentric oscillation gear device as defined in claim 2 , wherein each of the motor installation sections ...

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Номер записи: 59
17-03-2022 дата публикации

MULTIPLE AXIS WORK-PIECE TRANSFER APPARATUS

Номер: US20220081223A1
Автор: Launiere Timothy Richard
Принадлежит:

A work-piece transfer apparatus, comprising at least one work-piece engagement structure; at least one first robot arm pivotally connected to the work-piece engagement structure; a first motor coupled to the first robot arm and being adapted for translating the first robot arm fore and aft in a generally horizontal direction; a second motor; at least one second robot arm being in operating driving relationship with the second motor and operatively coupled with the work-piece engagement structure for raising and lowering the work-piece engagement structure; and a support structure for supporting the apparatus or portions thereof; wherein the first motor and second motor are operated synchronously to raise, lower, and/or translate the work-piece engagement structure in a fore and aft direction by way of one or both of the first robot arm and second robot arm. 1. A work-piece transfer apparatus comprising:a. at least one generally elongated work-piece engagement structure;b. at least one first robot arm having a first end portion and a second end portion, the first end portion being pivotally connected to the at least one generally elongated work-piece engagement structure;c. a first motor coupled to the at least one first robot arm at the second end portion and being adapted for translating the at least one first robot arm fore and aft in a generally horizontal direction;d. a second motor;e. at least one second robot arm having a first end portion and a second end portion, the first end portion of the at least one second robot arm being in operating driving relationship with the second motor, and the second end portion operatively coupled with the at least one generally elongated work-piece engagement structure for raising and lowering the at least one generally elongated work-piece engagement structure; and{'claim-text': 'wherein the first and second motors are operated synchronously to raise and lower the at least one generally elongated work-piece engagement ...

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Номер записи: 60
17-03-2022 дата публикации

PLANETARY GEAR WITHOUT BACKLASH

Номер: US20220082154A1
Автор: Schulz Ingo
Принадлежит:

A planetary gear is disclosed that provides at least a first hollow wheel with a helical gearing and a second hollow wheel with a helical gearing are adapted to rotate in a first rotational direction and a second opposite rotational direction, and a first double planet having a first wheel with a helical gearing meshing with the helical gearing of the first hollow wheel and having a second wheel with a helical gearing meshing with the helical gearing of the second hollow wheel. The disclosed configuration minimizes backlash between the helical gearings. 1. A planetary gear comprising:a first hollow wheel with a helical gearing and a second hollow wheel with a helical gearing, wherein the first hollow wheel and the second hollow wheel are adapted to rotate in a first rotational direction and a second opposite rotational direction, anda first double planet having a first wheel with a helical gearing meshing with the helical gearing of the first hollow wheel and having a second wheel with a helical gearing meshing with the helical gearing of the second hollow wheel, wherein each helical gearing has a first side face and a second side face opposite to the first side face, wherein a surface normal of the first side face is directed to the first rotational direction and a surface normal of the second side face is directed to the second rotational direction, whereina first force exerting element exerting a first force in a first direction so that the first side faces of the helical gearings of the first wheel of the first double planet are in contact with the second side faces of the helical gearing of the first hollow wheel and that the second side faces of the helical gearings of the second wheel of the first double planet are in contact with the first side faces of the helical gearing of the second hollow wheel, providing a preload to the hollow wheels in the first and the second rotational direction.2. The planetary gear according to claim 1 , further comprising a ...

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Номер записи: 61
17-03-2022 дата публикации

SPEED REDUCER

Номер: US20220082156A1
Автор: MAKISUMI Kazuyoshi
Принадлежит:

A speed reducer according to one embodiment of the disclosure includes: a casing; a carrier disposed rotatably relative to the casing; a speed reduction mechanism that is disposed in the casing and reduces rotation inputted from a motor and outputs reduced rotation; and a bolt protruding from the carrier toward the outside of the casing. The bolt has a male threaded portion that is configured to engage with a female threaded portion provided in a second arm. 1. A speed reducer comprising:a casing;a speed reduction mechanism disposed in the casing and including a transmission portion, the speed reduction mechanism reducing rotation inputted from a drive source and outputting reduced rotation, the transmission portion being rotatable relative to the casing; anda bolt protruding from the transmission portion toward outside of the casing, the bolt having a male threaded portion configured to engage with a female threaded portion provided in a connection member.2. The speed reducer of claim 1 , wherein the bolt includes a head portion and a shaft portion claim 1 , the shaft portion projecting from the head portion and having the male threaded portion formed thereon claim 1 , andwherein the transmission portion has a bolt insertion hole receiving the head portion therein and allowing the shaft portion to protrude out from the transmission portion.3. The speed reducer of claim 2 , wherein the transmission portion includes:a main body extending in the casing along a rotational axis of the transmission portion; anda flange portion extending out from the main body in a radial direction of the rotational axis and facing the casing in a direction along the rotational axis,wherein the bolt insertion hole is formed in the flange portion.4. The speed reducer of claim 1 , the bolt is made of a material harder than the transmission portion.5. The speed reducer of claim 1 , wherein internal teeth are provided on an inner periphery of the casing claim 1 , a crankshaft connected to an ...

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Номер записи: 62
29-05-2014 дата публикации

Shaft coupling structure

Номер: US20140147196A1
Автор: Sakae Mitsufuji, Shinichi Nishibe, Tetsuzo Ishikawa, Yoshitaka Shizu, Yuichi Nishitani
Принадлежит: Sumitomo Heavy Industries Ltd

In a shaft coupling structure in which a first shaft and a second shaft are coupled with each other by a combination of a key coupling and a clamp coupling, the first shaft has a cylindrical portion into which the second shaft is inserted and slits which are formed in the cylindrical portion by cutting off portions thereof in the axial direction, and a clamping fastener is mounted on portions of the outer circumference of the first shaft in which the slits are formed and the slit can be also used as a keyway of the key, and the plurality of slits are formed in the circumferential direction.

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Номер записи: 63
17-03-2016 дата публикации

FAN DRIVE GEAR SYSTEM WITH IMPROVED MISALIGNMENT CAPABILITY

Номер: US20160076393A1
Автор: Sheridan William G.
Принадлежит:

An epicyclic gear assembly according to an exemplary aspect of the present disclosure includes, 60 among other things, a carrier including a first plate axially spaced from a second plate by a radially outer connector. A first set of epicyclic gears supported adjacent the first plate include a first set of circumferentially offset intermediate gears meshing with a first sun gear and a first ring gear. A second set of epicyclic gears are axially spaced from the first set of epicyclic gears and supported adjacent the second plate, and include a second set of circumferentially offset intermediate gears meshing with a second sun gear and a second ring gear. The first epicyclic gear set and the second epicyclic gear set maintain relative intermeshing alignment during flexure induced deformation of the carrier. 1. An epicyclic gear assembly comprising:a carrier including a first plate axially spaced from a second plate by a radially outer connector;a first set of epicyclic gears supported adjacent the first plate, including a first set of circumferentially offset intermediate gears meshing with a first sun gear and a first ring gear; anda second set of epicyclic gears axially spaced from the first set of epicyclic gears and supported adjacent the second plate, and including a second set of circumferentially offset intermediate gears meshing with a second sun gear and a second ring gear, whereby the first epicyclic gear set and the second epicyclic gear set maintain relative intermeshing alignment during flexure induced deformation of the carrier.2. The assembly of claim 1 , including at least one intermediate gear opening in the carrier claim 1 , wherein one of the first set of intermediate gears and one of the second set of intermediate gears are located within the at least one intermediate gear opening.3. The assembly of claim 1 , wherein the first set of intermediate gears move independently of the second set of intermediate gears.4. The assembly of claim 1 , wherein ...

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Номер записи: 64
15-03-2018 дата публикации

Pancake gear motor

Номер: US20180073597A1
Автор: Chia-Sheng Liang
Принадлежит: Safeway Electro-Mechanical Co Ltd

A gear motor for decreasing speed at a mechanical power output is provided with a housing; a supporting shaft disposed along an axis of the housing and fastened in the housing; a planetary gear train as a speed reducer which is rotatably supported by the supporting shaft; and an electric motor including an outer stator and an inner permanent magnet, the electric motor disposed around the planetary gear train and within the housing. The planetary gear train includes a stationary sun gear secured to the housing and coaxially disposed around the axis of the housing; a driving sun gear as a torque output; planet gear assemblies equally spaced around an outer surface of the stationary sun gear. Each planet gear assembly includes coaxial first and second gears; and a carrier pivotably supported by the supporting shaft and attached to the permanent magnet.

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Номер записи: 65
15-03-2018 дата публикации

Valve Opening and Closing Timing Control Apparatus

Номер: US20180073656A1
Автор: IGUCHI Yoshiaki, Miyachi Eiji, MUKAIDE Hiroki, OTAKE Tomoharu, SUZUKI Shigemitsu
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A valve opening and closing timing control apparatus includes: a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft of an internal combustion engine; a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening and closing camshaft of the internal combustion engine; and a phase adjustment mechanism configured to set a relative rotation phase between the driving side rotator and the driven side rotator by a driving force of an electric actuator. The phase adjustment mechanism includes: an internally toothed ring gear; an inner gear; and a drive shaft, and the valve opening and closing timing control apparatus further includes: a biasing member; and a displacement regulation portion. 1. A valve opening and closing timing control apparatus comprising:a driving side rotator disposed rotatably about a rotation axis and configured to rotate synchronously with a crankshaft of an internal combustion engine;a driven side rotator disposed rotatably about the rotation axis and configured to be rotatable relative to the driving side rotator and to rotate integrally with a valve opening and closing camshaft of the internal combustion engine; anda phase adjustment mechanism configured to set a relative rotation phase between the driving side rotator and the driven side rotator by a driving force of an electric actuator, an internally toothed ring gear disposed coaxially with the rotation axis;', 'an inner gear disposed coaxially with an eccentric axis in a posture parallel to the rotation axis such that an external toothed portion thereof is engaged with a portion of an internal toothed portion of the ring gear; and', 'a drive shaft fitted into the inner gear,, 'wherein the phase adjustment mechanism includesthe phase adjustment mechanism is configured with a differential speed reduction mechanism ...

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Номер записи: 66
05-03-2020 дата публикации

Aircraft propulsion system

Номер: US20200070988A1
Автор: Giles E. HARVEY
Принадлежит: Rolls Royce PLC

An aircraft propulsion system comprises first and second propulsors. An epicyclic reduction gearbox is coupled to an input shaft. The reduction gearbox comprises a sun gear coupled to the input shaft, a plurality of planet gears which mesh with the sun gear and are mounted to a planet carrier, and a ring gear which meshes with the plurality of planet gears. The first propulsor is located upstream of the second propulsor The first propulsor is coupled to the sun gear, and the second propulsor is coupled to one of the planet carrier and the ring gear.

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Номер записи: 67
26-03-2015 дата публикации

SHEET FEEDING APPARATUS, IMAGE READING DEVICE AND IMAGE FORMING APPARATUS

Номер: US20150084264A1
Автор: Hino Takeshi
Принадлежит:

The invention includes a swing mechanism contacting/separating a driven discharge roller with/from a driving discharge roller by swinging a support portion rotatably supporting the driven discharge roller. A planetary gear mechanism is provided in a power transmitting route from a driving source to the swing mechanism. The planetary gear mechanism switches the transmission of the driving force to the swing mechanism into a transmission state and a cutoff state by the switching portion. 1. A sheet feeding apparatus comprising:a conveying roller pair configured to convey a sheet;a discharge roller pair including a driving discharge roller configured to normally rotate and discharge the sheet out of the apparatus and to reversely rotate and convey again the sheet that has been once passed through the conveying roller pair toward the conveying roller pair, and a driven discharge roller configured to rotate by being driven by the driving discharge roller;a driving source; anda separating mechanism configured to contact the driven discharge roller with the driving discharge roller and separate the driven discharge roller from the driving discharge roller by switching input rotations generated by the driving source to normal and reverse rotations, the separating mechanism including:a support portion rotatably supporting the driven discharge roller;a swing mechanism configured to swing the support portion by receiving a driving force from the driving source and separate the driven discharge roller from the driving discharge roller;a planetary gear mechanism provided within a power transmission path from the driving source to the swing mechanism; anda switching portion switching the planetary gear mechanism to a transmission state in which a power of the driving source is transmitted from the driving source to the swing mechanism and to a cutoff state in which the transmission of the power from the driving source to the swing mechanism is cut off.2. The sheet feeding ...

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Номер записи: 68
24-03-2016 дата публикации

PLANETARY GEAR TRAIN OF INTERNAL ENGAGEMENT TYPE

Номер: US20160084348A1
Автор: NAKAYAMA Seiji, TABUCHI Toru
Принадлежит:

Each of gear teeth of an external gear has a tooth-bottom portion, a tooth-middle portion and a tooth-front portion. The tooth-middle portion is operatively engaged with an internal gear. A cross-sectional shape of the tooth-bottom portion is formed by a hypocycloid curved line. A cross-sectional shape of the tooth-middle portion is formed by an epicycloid curved line. A cross-sectional shape of the tooth-front portion is formed by a first predetermined curved line, which is located at a position closer to a first pitch circle of the external gear in a radial-inward direction from a reference epicycloid curved line. The reference epicycloid curved line is continuously connected to each of the curved lines of the tooth-middle portion at both circumferential sides of each gear tooth. As a result, the tooth-front portion is so formed that a part of the tooth-front portion is escaped in the radial-inward direction from the reference epicycloid curved line. 1. A planetary gear train of an internal engagement type comprising:an internal gear having multiple internal gear teeth at an inner peripheral portion of the internal gear, each of the internal gear teeth having a tooth-bottom portion, a tooth-middle portion and a tooth-front portion; andan external gear having multiple external gear teeth at an outer peripheral portion of the external gear, each of the external gear teeth having a tooth-bottom portion, a tooth-middle portion and a tooth-front portion, and the tooth-middle portion of the external gear being internally and operatively engaged with the tooth-middle portion of the internal gear,wherein the tooth-bottom portion of the external gear is located at a radial-inside position of a first pitch circle of the external gear, the tooth-middle portion of the external gear is located at a radial-outside position of the first pitch circle and operatively in contact with the internal gear, and the tooth-front portion of the external gear is located at a radial-outside ...

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Номер записи: 69
31-03-2022 дата публикации

SPEED REDUCER AND SPEED REDUCER-EQUIPPED MOTOR

Номер: US20220099161A1
Автор: MARUO Kazuki, SAKAI MASAHITO, SHIMIZU Fumihiro
Принадлежит: Denso Corporation

A speed reducer includes a helical gear, an eccentric shaft and a slider plate. The speed reducer also includes a transmission gear and an output gear body. The transmission gear is supported at a first support part, transmission gear spinning is restricted by engagement with the slider plate, and the transmission gear revolves by the helical gear rotating with the eccentric shaft. The output gear body rotates by the transmission gear revolving. The transmission gear includes a pair of restricting protrusions protruding toward the slider plate side. The restricting protrusions have engaging surfaces that touch the slider plate wherein the engaging surfaces oppose the slider plate in a radial direction of the transmission gear. Surfaces at opposite sides of the restricting protrusions from the slider plate are formed, as seen in the axis direction of the transmission gear, to be convex to the opposite sides thereof from the slider plate. 1. A speed reducer , comprising:a first gear that is configured to rotate upon transmission of rotary force thereto;an eccentric shaft that is coupled to the first gear, the eccentric shaft including a support part that is offset, in a direction of a radius of rotation, from a rotation axis of the first gear;a spinning restriction member that is disposed at an outer side, in a radial direction, of the eccentric shaft;a transmission gear that is supported at the support part, spinning of the transmission gear being restricted by engagement of the transmission gear with the spinning restriction member, and the transmission gear being configured to revolve around the rotation axis of the first gear as a result of rotation of the first gear together with the eccentric shaft; andan output part that is configured to rotate as a result of revolution of the transmission gear, wherein:the transmission gear includes a restricting protrusion that protrudes toward a side of the transmission gear at which the spinning restriction member is ...

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Номер записи: 70
31-03-2022 дата публикации

Speed reducing device and drive device

Номер: US20220099162A1
Автор: Shinya Hirose
Принадлежит: Nabtesco Corp

A speed reducing device according to one aspect of the present disclosure includes: a plurality of speed reducer units arranged in parallel; and an output rotating body that rotates by power received from the speed reducer units. Each of the speed reducer units includes a casing and a speed reducing mechanism unit. The casing has a peripheral wall with inner teeth disposed on an inner periphery of the peripheral wall. The speed reducing mechanism unit meshes with the inner teeth to decelerate input rotation. At least two of the speed reducer units are disposed adjacent to each other such that outer surfaces of peripheral walls of casings thereof are in contact with each other. In at least one of two peripheral walls contacting with each other, a thickness of a contact portion is smaller than a thickness of other portions in a circumference of the same peripheral wall.

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Номер записи: 71
25-03-2021 дата публикации

INHIBITOR INTEGRATED ACTUATOR SHIFT CONTROL DEVICE

Номер: US20210088134A1
Автор: CHOI Tae Keuk, HEO Jin, KIM Dae Yeon, KIM Dong Won, KIM Jeong Seok, Maeng Sung Joon
Принадлежит:

The present disclosure provides an inhibitor integrated actuator shift control device capable of controlling a position of a gear shift by improving control performance and durability through position control of a brushless direct current (BLDC) motor by an inductive sensor, forming a metallic uneven portion on an output shaft flange part of a reducer, and detecting a variation amount in induced current due to the metallic uneven portion. 1. An inhibitor integrated actuator shift control device comprising:{'b': '10', 'a first housing ();'}{'b': 20', '21', '23', '21', '10, 'a stator () including a bobbin () and a coil () wound around the bobbin () and disposed in the first housing ();'}{'b': 30', '31', '35', '31', '35', '20, 'i': 'a', 'a rotor () including a rotor core () and a rotary shaft () which is connected to the rotor core () and provided with an eccentric portion () at one end thereof, and disposed in the stator ();'}{'b': 40', '41', '35', '43', '10', '41, 'a first inductive sensor () including conductive couplers () connected to the other end of the rotary shaft (), and a sensor plate () disposed in the first housing () and having a transmitter and a receiver disposed at positions facing the conductive couplers ();'}{'b': 50', '51', '35', '35', '53', '51', '55, 'i': 'a', 'a reducer () including a sun gear () connected to the eccentric portion () of the rotary shaft () to rotate eccentrically, a ring gear () inscribed with the sun gear (), and an output shaft () connected to the sun gear to transmit a rotational force;'}{'b': 60', '50, 'a second housing () in which the reducer () is disposed; and'}{'b': 90', '55, 'a magnetically inductive second inductive sensor () configured to detect a rotation angle of the output shaft ().'}2909155936091. The inhibitor integrated actuator shift control device of claim 1 , wherein the second inductive sensor () includes a metallic uneven portion () formed on the output shaft () claim 1 , and a printed circuit board () ...

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Номер записи: 72
29-03-2018 дата публикации

GEAR MECHANISM FOR AN ANTI-ROLL STABILIZATION MEANS OF A VEHICLE

Номер: US20180087602A1
Автор: Bäuml Markus, Illg Igor, Koch Thorsten, Sagewka Simon, Schmid Christian
Принадлежит:

A gear mechanism for an anti-roll stabilizer of a vehicle, having at least one planetary gear mechanism stage with a sun gear, an internal gear and at least two planetary clears, at least one planetary gear having a first planetary part and a second planetary part which are mounted coaxially and are connected to one another via a spring apparatus. The spring apparatus loads the two planetary parts with a prestressing force in an opposed manner in the circumferential direction. 1. A gear mechanism for an anti-roll stabilizer of a vehicle ,the gear mechanism having at least one planetary gear mechanism stage with (i) a sun gear , (hi) an internal gear and (iii) at least two planetary gears ,wherein at least one planetary gear of the at least two planetary gears has a first planetary part and a second planetary part which are mounted coaxially and are connected to one another via a spring apparatus,the spring apparatus loading the two planetary parts with a prestressing farce in are opposed manner in a circumferential direction.2. The gear mechanism as claimed in claim 1 , wherein the first planetary part and the second planetary part have a rotational offset with respect to one another in a prestressed state.3. The gear mechanism as claimed in claim 1 , wherein all of the planetary gears of the at least one planetary gear mechanism stage each has a first planetary part and a second planetary part which are mounted coaxially and are connected to one another via a spring apparatus claim 1 , the spring apparatus loading the two planetary parts with a prestressing force in an opposed manner in the circumferential direction.4. The gear mechanism as claimed in claim 1 , wherein the spring apparatus has a first contact face for loading the first planetary part with the prestressing force and a second contact face for loading the second planetary part with the prestressing force.54. The gear mechanism as claimed in claim 1 , wherein the first planetary part has a first ...

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Номер записи: 73
05-05-2022 дата публикации

ELECTRIC WHEEL END ASSEMBLY

Номер: US20220134875A1
Автор: Rebière Guillaume
Принадлежит: AXLETECH INTERNATIONAL IP HOLDINGS, LLC

An electric wheel-end assembly comprising a mounting portion, a spindle having an inboard end connected to the mounting portion and an outboard end distal from the mounting portion. A hub is rotatably mounted to the spindle via one or more bearings disposed between the inboard and outboard ends of the spindle. A reduction gearbox is disposed at the distal end of the spindle. An input shaft comprising an inboard end having a drive receiving portion arranged to releasably connect to a drive shaft of an electric motor, extends through the spindle to deliver a rotational input to the drive input of the reduction gearbox, the drive output of the reduction gearbox being connected to the hub to drive the hub in rotation about the spindle.

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Номер записи: 74
19-06-2014 дата публикации

Method of reducing a rotational output rate from a coaxially arranged rotating input

Номер: US20140171249A1
Автор: Arne Lars Jonas Kullin
Принадлежит: SKF AB

A method of rotating an output gear at a rotational rate that is slower than an input rotational rate. The input rotation moves a planetary gear in a circular motion about a central axis. A first stage external gear configuration of the planetary gear engages with an internal gear configuration of a stationary gear. The engagement rotates the planetary gear about a concentrically located planetary gear rotational axis. A second stage external gear configuration is rotated by and at a same rate the first stage external gear configuration. The first stage diameter and/or number of teeth differs from the second stage diameter and/or number of teeth. The planetary gear rotation in conjunction with the difference between the first and second stages causes the output gear to rotate respective to the stationary gear. Rotational positioning of the output gear can be monitoring and adjusted by controlling the input rotational rate.

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Номер записи: 75
19-06-2014 дата публикации

Eccentric oscillating gear device and assembling method for crankshaft in eccentric oscillating gear device

Номер: US20140171250A1
Автор: Koji Nakamura
Принадлежит: Nabtesco Corp

An eccentric oscillating gear device comprises a crankshaft 46 having an eccentric portion 46 a , 46 b , an externally toothed gear 48 a , 48 b having external teeth and a through-hole in which the eccentric portion 46 a , 46 b is inserted, an outer cylinder 12 , and a carrier 14 . The carrier 14 rotatably supports the crankshaft 46 . The outer cylinder 12 has internal teeth 24 meshed with the external teeth of the externally toothed gear. The eccentric oscillating gear device is provided with rotational phase adjusting means 58 for setting an orientation of the crankshaft 46 about an axis thereof, on the basis of orientations of the outer cylinder 12 and the carrier 14 about an axis thereof.

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Номер записи: 76
05-05-2022 дата публикации

APPARATUS AND METHOD FOR ASSEMBLING DOUBLE HELICAL PLANETARY SYSTEM

Номер: US20220136586A1
Автор: Falls Alan Wayne, Mueller Douglas Robert, Spruce Gregory Alan
Принадлежит:

In one embodiment of the present disclosure, there is provided a planetary gear system. The planetary gear system includes a split double helical ring gear having a first ring gear with first helical ring teeth and a second ring gear with second helical ring teeth, a split double helical sun gear having a first sun gear with first helical sun teeth and a second sun gear with second helical sun teeth, a sun gear coupler coupling the first sun gear and the second sun gear; and a single-piece double helical planet pinion having a first helical planet teeth portion and a second helical planet teeth portion, where the first helical planet teeth mesh with the first helical sun teeth and the first helical ring teeth, and the second helical planet teeth mesh with the second helical sun teeth and the second helical ring teeth.

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Номер записи: 77
09-04-2015 дата публикации

Apparatus And Method For Producing An Orbital Movement In A Plane For A Fluid Sample

Номер: US20150098300A1
Автор: Annau Niels
Принадлежит:

An apparatus () for producing an orbital movement in a plane () is disclosed. The apparatus () comprises a lower shaft () and an upper shaft (), being parallelly and eccentrically attached to one another, and a platform () mounted on the upper shaft (). A ring gear () is attached to the platform () and coaxially rotatable about the upper shaft (). A gear wheel () is coaxially rotatably mounted on the lower shaft () and engages with the ring gear (). 1. An apparatus for producing an orbital movement in a plane , the apparatus comprising:a lower shaft and an upper shaft , being parallelly and eccentrically attached to one another;a platform, rotatably mounted on the upper shaft;a ring gear, attached to the platform and coaxially rotatable about the upper shaft, the ring gear comprising a plurality of interior teeth on a radially inward circumferential surface; anda gear wheel, having a plurality of exterior teeth on a peripheral circumferential surface, being coaxially rotatably mounted on the lower shaft;wherein the gear wheel is so placed within the ring gear that at least some of the plurality of interior teeth engage with at least some of the plurality of exterior teeth.2. The apparatus according to claim 1 , wherein the platform and the ring gear are formed as one piece.3. The apparatus according to claim 1 , further comprising a counterweight connected to the upper shaft.4. The apparatus according to claim 1 , further comprising a sample holder mounted on the platform.5. The apparatus according to claim 1 , further comprising a first transmission device for driving the lower shaft to rotate coaxially.6. The apparatus according to claim 5 , wherein the first transmission device is one of a pulley coaxially attached to the lower shaft claim 5 , or a first transmitting gear wheel coaxially attached to the lower shaft.7. The apparatus according to claim 1 , further comprising a second transmission device for driving the gear wheel to rotate coaxially.8. The ...

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Номер записи: 78
19-03-2020 дата публикации

Multi-Directional Gearbox Deflection Limiter for a Gas Turbine Engine

Номер: US20200088106A1
Автор: Brandon Wayne Miller, Donald Albert BRADLEY
Принадлежит: General Electric Co

A gas turbine engine including a fan, a core including at least one rotatable shaft, and a gearbox mechanically coupling at least one rotatable shaft of the core to the fan is provided. The gas turbine engine also includes a coupling system for mounting the gearbox within the gas turbine engine. The coupling system includes a flexible coupling connected to at least one of a fan frame or a core frame, as well as a torque frame connected to the flexible coupling and the gearbox. Moreover, a deflection limiter is provided, loosely attaching the flexible coupling to the gearbox to provide a predetermined axial range of motion, radial range of motion, and circumferential range of motion between the gearbox and the frame to which the flexible coupling is attached.

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Номер записи: 79
28-03-2019 дата публикации

TRANSMISSION

Номер: US20190091856A1
Автор: MATSUDA Shigekatsu, NAKAGAWA Masaaki, TAKEMOTO Shinji, Yamane Satoshi, Yokogawa Tomoyoshi
Принадлежит:

A transmission includes a first rotating portion, an eccentric body, a bearing, an external gear, an internal gear, carrier pins, and a second rotating portion. The first rotating portion rotates about a central axis. The eccentric body rotates therewith and a distance from the central axis to an outer surface thereof varies circumferentially. The bearing is provided on the eccentric body. The external gear includes through holes and is provided on the bearing. The internal gear is cylindrical, surrounds the central axis, and is disposed radially outside the external gear. The carrier pins are columnar and inserted into the through holes. The second rotating portion, to which upper portions of the carrier pins are fixed, rotates about the central axis. The external and internal gears have different numbers of teeth. The tooth of the external gear farthest from the central axis meshes with the internal gear. The diameters of the carrier pins decrease upward. 1. A transmission of an eccentrically oscillating type , comprising:a first rotating portion that rotates about a central axis extending in a top-bottom direction;a first eccentric body that rotates together with the first rotating portion, for which a distance from the central axis to an outer peripheral surface of the first eccentric body varies with a position in a circumferential direction;a first bearing provided on the outer peripheral surface of the first eccentric body;a first external-tooth gear that includes a plurality of first through holes penetrating therethrough in an axial direction and that is provided on an outer peripheral surface of the first bearing;an internal-tooth gear that has a cylindrical shape surrounding the central axis in the circumferential direction and that is disposed outward of the first external-tooth gear in a radial direction;a plurality of carrier pins that each have a columnar shape extending in the axial direction and that are inserted into corresponding ones of the ...

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Номер записи: 80
01-04-2021 дата публикации

MOTOR VEHICLE TRANSMISSION

Номер: US20210095743A1
Автор: BRUSHKIVSKYY Vyacheslav
Принадлежит:

A motor vehicle transmission having a planetary gear system with three coaxially arranged gearsets (RS, RS, RS) coupled to one another. The first gearset (RS) includes a first sun gear (SR), a first planet carrier (ST) and a first ring gear (HR). The second gearset (RS) includes a second sun gear (SR), a second planet carrier (ST) and a second ring gear (HR), and the third gearset (RS) includes a third sun gear (SR), a third planet carrier (ST) and a third ring gear (HR). The second and third gearsets (RS, RS) have the same stationary gear ratio and the second and third sun gears (SR, SR) are arranged in a rotationally fixed manner on a common driveshaft (AW). The second and third sun gears (SR, SR) are made integrally with the driveshaft (AW). 14-. (canceled)5. A motor vehicle transmission comprising:{'b': 1', '2', '3, 'a planetary gear system with first, second and third coaxially arranged gearsets (RS, RS, RS) coupled to one another,'}{'b': 1', '1', '1', '1, 'the first gearset (RS) comprising a first sun gear (SR), a first planet carrier (ST) and a first ring gear (HR),'}{'b': 2', '2', '2', '2, 'the second gearset (RS) comprising a second sun gear (SR), a second planet carrier (ST) and a second ring gear (HR),'}{'b': 3', '3', '3', '3, 'the third gearset (RS) comprising a third sun gear (SR), a third planet carrier (ST) and a third ring gear (HR),'}{'b': 2', '3', '2', '3, 'the second gearset (RS) and the third gearset (RS) having the same stationary gear ratio and the second sun gear (SR) and the third sun gear (SR) are arranged in a rotationally fixed manner on a common driveshaft (AW), and'}{'b': 2', '3, 'the second sun gear (SR) and the third sun gear (SR) being formed integrally with the driveshaft (AW).'}623. The motor vehicle transmission according to claim 5 , wherein the second sun gear (SR) and the third sun gear (SR) have the same outer diameter (d).72323. The motor vehicle transmission according to claim 5 , wherein the second sun gear (SR) and the ...

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Номер записи: 81
12-05-2022 дата публикации

Differential assembly

Номер: US20220145974A1
Автор: Hiroshi Isono
Принадлежит: Toyota Motor Corp

A downsized differential assembly having a simple structure, which can be mounted easily on automobiles. The differential assembly comprises: a first gear as an internal gear; a second gear as an external gear; a first eccentric gear as an external gear meshed with the first gear; a second eccentric gear as an internal gear meshed with the second gear; a supporting member supporting the first eccentric gear and the second eccentric gear; a first motion translating mechanism translating revolving motion of the first eccentric gear into rotary motion of the first rotary shaft; and a second motion translating mechanism translating revolving motion of the second eccentric gear into rotary motion of the second rotary shaft. Gear ratios between the first gear and the first eccentric gear and between the second gear and the second eccentric gear are different, and the first rotary shaft and the second rotary shaft are rotated in opposite directions.

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Номер записи: 82
16-04-2015 дата публикации

Driven hatch arrangement for a motor vehicle

Номер: US20150105207A1
Автор: Heinz Hagedorn, Matthias Kieninger
Принадлежит: IMS Gear SE and Co KGaA

A driven hatch arrangement is provided, particularly a rear hatch arrangement, for a motor vehicle with a hatch and with a hatch drive for opening and/or closing the hatch, with the hatch drive comprising a motor with a motor shaft and a motor pinion and at least one planetary gear with a sun gear, planetary carriers with planetary rolling elements arranged on bearing pins, and an annulus, with the sun wheel of the planetary gear being formed by the motor pinion and a driven shaft being driven via the planetary gear, in which the motor pinion is slid onto the motor shaft.

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Номер записи: 83
16-04-2015 дата публикации

Driven hatch arrangement for a motor vehicle

Номер: US20150105208A1
Автор: Heinz Hagedorn, Matthias Kieninger
Принадлежит: IMS Gear SE and Co KGaA

A driven hatch arrangement is provided, particularly a rear hatch arrangement, for a motor vehicle with a hatch and with a hatch drive for opening and/or closing the hatch, with the hatch drive comprising a motor with a motor shaft and a motor pinion and at least one planetary gear with a sun gear, planetary carriers with planetary rolling elements arranged on bearing pins, and an annulus, with the sun wheel of the planetary gear being formed by the motor pinion and a driven shaft being driven via the planetary gear, in which the bearing pins of the planetary gear projecting beyond the planetary rolling elements arranged on the bearing pins in the direction towards the motor.

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Номер записи: 84
08-04-2021 дата публикации

STATIC CURVIC JOINT FOR EPICYCLICAL GEAR SYSTEM HOUSING ASSEMBLY

Номер: US20210102604A1
Автор: Winely Mark
Принадлежит: Rolls-Royce Corporation

A planet gear housing assembly in an epicyclical gear assembly comprises an aft planet gear assembly and a forward planet gear assembly. The aft planet carrier assembly comprises an aft flange defining a central aperture and an annular mounting flange positioned forward of and coaxial with said central aperture, said mounting flange forming a forward facing mounting surface comprising a curvic structure. The forward planet carrier assembly comprises a forward flange defining a central aperture and an annular mounting flange positioned aft of and coaxial with said central aperture, said mounting flange forming an aft facing mounting surface comprising a curvic structure. The curvic structures of the mounting surfaces are positioned relative to each other to thereby form a static curvic joint. 1. A planet gear housing assembly in an epicyclical gear assembly comprising: an aft flange defining a central aperture and a plurality of gear shaft pockets positioned about the circumference and radially outward of said central aperture, each pocket having a cylindrical wall; and', 'an annular mounting flange positioned forward of and coaxial with said central aperture, said mounting flange forming a forward facing mounting surface comprising a curvic structure;, 'an aft planet carrier assembly comprising a forward flange defining a central aperture and a plurality of gear shaft pockets positioned about the circumference and radially outward of said central aperture, each pocket having a cylindrical wall; and', 'an annular mounting flange positioned aft of and coaxial with said central aperture, said mounting flange forming an aft facing mounting surface comprising a curvic structure;, 'a forward planet carrier assembly comprisinganda plurality of planet gears each comprising a cylindrical shaft having a forward end portion disposed in a gear shaft pocket of said forward planet carrier assembly coaxially with the cylindrical wall of said pocket, an aft end portion disposed ...

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Номер записи: 85
23-04-2015 дата публикации

Planetary gear train for use with extended length sun in high torque applications

Номер: US20150111692A1
Автор: Saftoiu Radu
Принадлежит: TORQ FUSION LLC

A planetary gearbox, also known as an epicyclical gearbox is disclosed herein. The gearbox includes multiple rows of planets and a ring gear. The sun gear is a single unitary structure which simultaneously engages the multiple rows of planets. The system lowers the stress level on torque generating devices incorporating such a gearbox. 1. A planetary gear system , comprising:a single sun gear including external sun-gear teeth;a plurality of planet gears, each including external planet gear teeth, said plurality of planet gears being arranged in at least two rows of planet gears, wherein each planet gear simultaneously engages said single sun gear;a circular carrier portion having said plurality of planet gears rotatably attached thereto such that said planet gears extend into a hollow interior of said carrier as well as outside a generally circular plane of said carrier; anda ring gear disposed exterior to said circular carrier and including internal gear teeth,said external planet gear teeth of each said planet gear simultaneously engaging said external sun gear teeth of said sun gear and said internal teeth of said ring gear.2. The planetary gear system of claim 1 , wherein said planet gears in each said row generally form a circle of planet gears in said row.3. The planetary gear system of claim 1 , wherein said planet gears form a general circle of planet gears about said sun gear.4. The planetary gear system of claim 1 , wherein said planet gears in a first said row are arranged in a first cross-shape claim 1 , and said planet gears in a second said row are arranged in a second cross-shape claim 1 , said first cross-shape and said second cross-shape being rotationally offset from one another.5. The planetary gear system of claim 1 , wherein said planet gears in different said rows are not axially aligned with one another in said carrier.6. The planetary gear system of claim 1 , further comprising a plurality of bores extending through said carrier claim 1 , ...

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Номер записи: 86
20-04-2017 дата публикации

Joint mechanism for humanoid robot

Номер: US20170106543A1
Автор: Hideshi Shimada, Hongyou Wang, Kiyoshi Andoh, Takayuki HASE, Yoshiaki Makizoe
Принадлежит: Nabtesco Corp

A joint mechanism includes: a first member; a second member; and a gear device that is provided between the first member and the second member and changes the number of revolutions at a predetermined ratio to transmit a drive force. The gear device includes a crank shaft on which a first eccentric portion is formed, a first oscillating gear that has first external teeth and an insertion hole into which the first eccentric portion is inserted, a carrier that retains the crank shaft rotatably, and an external cylinder that has an internal-tooth pin 3 . The carrier and the external cylinder are configured to be displaced coaxially and relatively to each other due to oscillation of the first oscillating gear.

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Номер записи: 87
29-04-2021 дата публикации

SPEED REDUCER

Номер: US20210123505A1
Автор: MITSUNO Yuta
Принадлежит:

A speed reducer includes a case with internal teeth, where the case has a cylindrical shape and an outer diameter D, an inner cylinder centered around an central axis of the case and having an inner diameter R, where R/D falls within a range of 20% to 45%, crank shafts arranged on a circumference of an imaginary circle centered around the central axis of the case, where the crank shafts are spaced away from each other in a circumferential direction of the imaginary circle, and each crank shaft has first external teeth, an external tooth member having second external teeth meshing with the internal teeth, where the external tooth member is eccentrically movable by the crank shafts, and a carrier supporting the crank shafts in a rotatable manner, where the carrier is rotatable by the crank shafts relative to the case. 1. A speed reducer comprising:a case with internal teeth, the case having a cylindrical shape and an outer diameter D;an inner cylinder centered around a central axis of the case and having an inner diameter R, R/D representing a ratio of the inner diameter R to the outer diameter D of the case and falling within a range of 20% to 45%;a plurality of crank shafts arranged on a circumference of an imaginary circle centered around the central axis of the case, the crank shafts being spaced away from each other in a circumferential direction of the imaginary circle, each crank shaft having first external teeth;an external tooth member having second external teeth meshing with the internal teeth of the case, the external tooth member being eccentrically movable by the crank shafts; anda carrier supporting the crank shafts in a rotatable manner, the carrier being rotatable by the crank shafts relative to the case.2. A speed reducer comprising:a case with internal teeth, the case having a cylindrical shape and an outer diameter D;an inner cylinder centered around a central axis of the case, the inner cylinder having an inner diameter R;a plurality of crank ...

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Номер записи: 88
29-04-2021 дата публикации

SPEED REDUCER

Номер: US20210123506A1
Автор: FURUTA Kazuya
Принадлежит:

A speed reduce according to an embodiment of the present invention includes a case having an outer diameter D, a plurality of crankshafts, and a carrier supporting the crankshafts in a rotatable manner. The carrier is rotatable by the crankshafts relative to the case. Each of the plurality of crankshafts includes a plurality of eccentric members each of which has a diameter dc1 and a crank journal that has a diameter dc2. The crankshaft further includes n1 needles that are arranged around each of the plurality of eccentric members and each of which has a diameter size dr1, and n2 needles that are arranged around the crank journal and each of which has a diameter size dr2. In the speed reducer, relational expression 5.5≤D/dc1≤7.0 is satisfied. 1. A speed reducer , comprising:a case with internal teeth, the case having an outer diameter D;a plurality of crankshafts arranged on a circumference of an imaginary circle that has a diameter D2 and is centered on a central axis of the case, the crankshafts being spaced away from each other in a circumferential direction of the imaginary circle, each crankshaft having first external teeth;a plurality of external tooth members each having second external teeth that mesh with the internal teeth of the case, the external tooth member being eccentrically movable by the crankshafts; anda carrier supporting the crankshafts in a rotatable manner, the carrier being rotatable by the crankshafts relative to the case, a plurality of eccentric members corresponding to the plurality of the external tooth members, each of the plurality of eccentric members having a diameter dc1:', 'a crank journal corresponding to the carrier and having a diameter dc2:', 'n1 first needles arranged around each of the plurality of eccentric members, each of the first needles having a diameter size dr1: and', 'n2 second needles arranged around the crank journal, each of the second needles having a diameter size dr2,', 'wherein 5.5≤D/dc1≤7.0 is satisfied., ' ...

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Номер записи: 89
29-04-2021 дата публикации

PLANETARY GEARBOX HAVING A RING GEAR ACCOMMODATED IN A HOUSING PART

Номер: US20210123522A1
Автор: HANNET Stefan
Принадлежит: Sew-Eurodrive GMBH & Co. KG

A planetary gearbox includes a ring gear accommodated in a housing part, the ring gear particularly has on its radially outer surface, in particular its radially outer side, an annular groove, the annular groove, in particular a circumferential annular groove in the circumferential direction, and a spring element is accommodated in the annular groove, which projects at least partially into an annular groove introduced into the housing part. 1. A planetary gearbox , comprising:a housing including a first annular groove on a radially outer surface;a ring gear accommodated in the housing part and including a second annular groove in a radially inner surface; anda spring element at least partially projecting into the first annular groove and the second annular groove;wherein the first annular groove and/or the second annular groove includes a planar region, a normal direction of the planar region having a non-zero angle in relation to an axial direction of the ring gear, the spring element engaging the planar region.2. The planetary gearbox according to claim 1 , wherein the spring element extends substantially perpendicular to the planar region.3. The planetary gearbox according to claim 1 , wherein the first annular groove and the second annular groove include the planar region.4. The planetary gearbox according to claim 1 , wherein the annular groove is arranged as a circumferential annular groove in a circumferential direction.5. The planetary gearbox according to claim 1 , wherein the spring device is arranged as a ring and/or an apertured disk.6. The planetary gearbox according to claim 1 , wherein the spring device is circular in an axially frontal region and an axially rear region.7. The planetary gearbox according to claim 1 , wherein the spring device is arranged as an apertured disk claim 1 , a smallest radial clearance value of the apertured disk at a respective axial position increases monotonically in an axial direction claim 1 , and a greatest radial ...

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Номер записи: 90
11-04-2019 дата публикации

Fan drive gear system with improved misalignment capability

Номер: US20190107004A1
Автор: William G. Sheridan
Принадлежит: United Technologies Corp

An epicyclic gear assembly includes a carrier that includes a first plate axially spaced from a second plate by a connector. A first epicyclic gear set is supported adjacent the first plate and includes a first set of circumferentially offset intermediate gears meshing with a first sun gear and a first ring gear. A second epicyclic gear set is axially spaced from the first epicyclic gear set and supported adjacent the second plate and includes a second set of circumferentially offset intermediate gears meshing with a second sun gear and a second ring gear. The first epicyclic gear is set and the second epicyclic gear set maintain relative intermeshing alignment during flexure-induced deformation of the carrier. The first ring gear includes a first set of teeth that extends from a first flexible flange and the second ring gear includes a second set of teeth that extends from a second flexible flange.

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Номер записи: 91
09-06-2022 дата публикации

PLANETARY GEAR MECHANISM, GEARED MOTOR, AND RACING MODULE

Номер: US20220178423A1
Автор: SEKII Yoichi
Принадлежит:

A planetary gear mechanism includes a sun gear attached to the motor rotation shaft to rotate about the central axis extending vertically, a fixed internal gear radially outside the sun gear, planetary gears radially outside the sun gear and radially inside the fixed internal gear to mesh with the sun gear and the fixed internal gear, a movable internal gear above the fixed internal gear and radially outside the planetary gears to mesh with the planetary gears and to rotate about the central axis, and a carrier that holds upper and lower surfaces of the planetary gears. 1. A planetary gear mechanism that decelerates rotation input from a motor rotation shaft that rotates about a central axis extending in a vertical direction and outputs the rotation to an outside , the planetary gear mechanism comprising:a sun gear attached to the motor rotation shaft and rotatable about the central axis;a fixed internal gear located radially outside the sun gear;planetary gears that are located radially outside the sun gear and radially inside the fixed internal gear to mesh with the sun gear and the fixed internal gear;a movable internal gear that is located above the fixed internal gear and radially outside the planetary gears to mesh with the planetary gears, and to rotate about the central axis; anda carrier that holds upper and lower surfaces of the planetary gears.2. The planetary gear mechanism according to claim 1 , whereinthe carrier individually holds upper surfaces of the planetary gears and lower surfaces of the planetary gears, and includes two carrier holders having a same shape and opposing each other in a vertical direction; and a flat plate portion that extends in a radial direction while opposing an upper surface or a lower surface of the planetary gears;', 'a central hole located at a radial center portion of the flat plate portion and penetrating the flat plate portion in a vertical direction;', 'gear support portions that are located on a radially outer side of ...

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Номер записи: 92
18-04-2019 дата публикации

DRIVELINE ASSEMBLY FOR AN ELECTRIC VEHICLE

Номер: US20190111778A1
Автор: Dedo Jacqueline, Remboski Donald
Принадлежит:

A driveline assembly for an electric vehicle for driving a pair of wheels. The driveline assembly includes an electric motor having an output shaft. A differential is coupled with the output shaft and is configured to receive torque from the output shaft. A pair of primary shafts are each coupled with the differential and configured to receive torque from the differential. A pair of end reducers are each configured to receive torque from one of the primary shafts and provide a gear reduction and torque multiplying effect at a wheel output. A controller is connected to the electric motor and is configured to superimpose a torque fluctuation at the output shaft to counteract vibrations in the driveline assembly. 1. A driveline assembly for an electric vehicle for driving a pair of wheels , said driveline assembly including:an electric motor having an output shaft;a differential coupled with the output shaft and configured to receive torque from the output shaft;a pair of primary shafts each coupled with the differential and configured to receive torque from the differential;a pair of end reducers each configured to receive torque from one of the primary shafts and including a wheel output for being coupled with one of the wheels to provide a gear reduction and torque multiplying effect at the wheel; anda controller connected to the electric motor and configured to superimpose a torque fluctuation at the output shaft to counteract vibrations in the driveline assembly.2. The driveline assembly for a vehicle as set forth in wherein the pair of end reducers each include a planetary gear system including at least a sun gear claim 1 , a plurality of planet gears disposed about the sun gear claim 1 , a ring gear disposed about the planet gears claim 1 , a planet carrier connected to the plant gears and a wheel output connected to the planet carrier for transmitting torque to the wheel.3. The driveline assembly for a vehicle as set forth in wherein the pair of end reducers ...

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Номер записи: 93
27-04-2017 дата публикации

Double Eccentric Positioning Apparatus

Номер: US20170114880A1
Автор: Collins Ronald J., Favilla Stephan J., Lagally Christie Dusty, Merkley Alan Ray
Принадлежит: The Boeing Company

A double eccentric positioning apparatus uses two equal offset eccentric bushings to accurately position a tool (such as a drill bushing) in two dimensions. Miniature servo motors and precise gearing control the rotation of each eccentric bushing, which controls the direction of the offset vectors. The offset vectors are used to determine the final position of the drill bushing. The desired rotation angles can be mathematically calculated based on desired position. The inner eccentric bushing is located concentric to the offset of the outer eccentric bushing. This allows any position, within a radius of two times the eccentric offset, to be achieved. The use of worm gearing on the eccentric bushings prevents back-driving of the servo motors, due to the lead angle of the worm gears, and the friction between the worm wheel and worm gear. 1: An apparatus comprising:an outer eccentric bushing having an outer circular cylindrical surface and an inner circular cylindrical surface off-center from said outer circular cylindrical surface of said outer eccentric bushing;a first worm wheel affixed to said outer eccentric bushing;an inner eccentric bushing having an outer circular cylindrical surface in contact with said inner circular cylindrical surface of said outer eccentric bushing and an inner circular cylindrical surface off-center from said outer circular cylindrical surface of said inner eccentric bushing;an external spur gear affixed to said inner eccentric bushing, said external spur gear having an axis which is coaxial with an axis of said outer circular cylindrical surface of said inner eccentric bushing;an internal spur gear surrounding and engaging said external spur gear, said internal spur gear having an axis which is coaxial with an axis of said outer circular cylindrical surface of said outer eccentric bushing; anda second worm wheel affixed to said internal spur gear.2: The apparatus as recited in claim 1 , wherein offsets of said inner and outer eccentric ...

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Номер записи: 94
27-04-2017 дата публикации

SETTING/OPERATING DEVICE

Номер: US20170114918A1
Автор: OHASHI Tomofumi
Принадлежит: AZBIL CORPORATION

A setting/operating device including: a sun gear that is rotated by a rotational force from a drive motor; a fixed internal gear fixedly disposed to surround the sun gear and having teeth on an inner peripheral surface; a plurality of planetary gears disposed between the sun gear and the fixed internal gear that rotate in engagement with the sun gear and the fixed internal gear while revolving around the sun gear; a movable internal gear disposed coaxially with the fixed internal gear, having teeth that come into engagement with the planetary gear on an inner peripheral surface, and provided so as to be rotatable; an output shaft coupled to the movable internal gear and configured to rotate the valve stem of the regulating valve; and a manual operation mechanism that rotates the sun gear or the planetary gear by a force applied from the outside of a housing. 1. A setting/operating device comprising:a sun gear configured to rotate upon reception of a rotational force from a drive motor;a fixed internal gear fixedly disposed to surround the sun gear and configured to have teeth on a fixed inner peripheral surface;a plurality of planetary gears disposed between the sun gear and the fixed internal gear that rotates in engagement with the sun gear and the fixed internal gear while revolving around the sun gear;a movable internal gear disposed coaxially with the fixed internal gear, said movable internal gear being configured with teeth on a movable inner peripheral surface that come into engagement with the planetary gears and being configured to be rotatable;an output shaft coupled to the movable internal gear and configured to rotate a valve stem of a regulating valve;a housing that accommodates the sun gear, the fixed internal gear, the planetary gears, and the movable internal gear; anda manual operation mechanism configured to rotate one of the sun gear and the plurality of planetary gears by an external force.2. The setting/operating device according to claim 1 , ...

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Номер записи: 95
27-04-2017 дата публикации

SETTING/OPERATING DEVICE

Номер: US20170114919A1
Автор: OHASHI Tomofumi
Принадлежит: AZBIL CORPORATION

A setting/operating device for operating a valve stem of a regulating valve, including: a sun gear that rotates upon reception of a rotational force from a drive motor; a fixed internal gear fixedly disposed to surround the sun gear and having teeth on an inner peripheral surface; a plurality of planetary gears disposed between the sun gear and the fixed internal gear that rotate in engagement with the sun gear and the fixed internal gear while revolving around the sun gear; a movable internal gear rotatably disposed coaxially with the fixed internal gear, having teeth that engage the planetary gear on an inner peripheral surface; and an output shaft coupled to the movable internal gear and configured to rotate the valve stem of the regulating valve, wherein the planetary gears have a torque limit structure that restricts power transmission when a torque exceeding a certain level is applied. 1. A setting/operating device comprising:a sun gear configured to rotate upon reception of a rotational force from a drive motor;a fixed internal gear fixedly disposed to surround the sun gear and configured to have teeth on a fixed inner peripheral surface;a plurality of planetary gears disposed between the sun gear and the fixed internal gear that rotates in engagement with the sun gear and the fixed internal gear while revolving around the sun gear;a movable internal gear disposed coaxially with the fixed internal gear, said movable internal gear being configured with teeth on a movable inner peripheral surface that come into engagement with the planetary gears and being configured to be rotatable; andan output shaft coupled to the movable internal gear and configured to rotate a valve stem of a regulating valve,wherein each of the planetary gears comprises a torque limit structure that restricts power transmission between the sun gear and the movable internal gear when a torque of at least a predetermined value is applied to either of the sun gear and the movable internal ...

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Номер записи: 96
27-04-2017 дата публикации

SETTING/OPERATING DEVICE

Номер: US20170114925A1
Автор: OHASHI Tomofumi
Принадлежит: AZBIL CORPORATION

A setting/operating device includes: a drive motor, a sun gear that rotates by force from the drive motor; a fixed internal gear; planetary gears configured to be rotatable in engagement with the fixed internal gear while revolving around the sun gear; a movable internal gear disposed coaxially with the fixed internal gear and provided so as to be rotatable in engagement with the planetary gears; an output shaft coupled to the movable internal gear and configured to rotate a valve stem of a regulating valve; wherein the planetary gear includes: a first gear portion configured to engage the sun gear and the fixed internal gear, a second gear portion disposed coaxially with the first gear portion and configured to engage the movable internal gear; and an elastically deformable portion having a smaller elastic modulus formed integrally between the first gear portion and the second gear portion. 1. A setting/operating device comprising:a sun gear configured to rotate upon reception of a rotational force from a drive motor;a fixed internal gear fixedly disposed in a form of surrounding the sun gear and having teeth on a fixed inner peripheral surface thereof;a plurality of planetary gears disposed between the sun gear and the fixed internal gear and rotatable in engagement with the sun gear and the fixed internal gear while revolving around the sun gear;a movable internal gear disposed coaxially with the fixed internal gear, having teeth on a movable inner peripheral surface that come into engagement with the planetary gears , said movable internal gear being configured to be rotatable;an output shaft coupled to the movable internal gear and configured to rotate a valve stem of a regulating valve; a first gear portion configured to engage the sun gear and the fixed internal gear,', 'a second gear portion disposed coaxially with the first gear portion and configured to engage the movable internal gear; and', 'an elastically deformable portion having a smaller elastic ...

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Номер записи: 97
18-04-2019 дата публикации

Two mode electric drive module with ravigneaux gearset

Номер: US20190113120A1
Автор: Erik J. Sten, Gabriel TRÖNNBERG
Принадлежит: EAAM DRIVELINE SYSTEMS AB

A drive module includes a Ravigneaux gearset, first and second input shafts, shift member, and differential. The first planet gears of the gearset can engage the first sun gear and the second planet gears, which can engage the second sun gear. The first input shaft can rotate with the second sun gear and receives torque from a first motor. A first gear can be coupled to the carrier of the Ravigneaux gearset for rotation therewith and meshingly engages the differential input. The second input shaft receives torque from a second motor and is drivingly coupled to the differential input. When the shift member is in a first position, the shift member drivingly couples the first sun gear to a first differential output. When the shift member is in a second position, the shift member couples the first sun gear to a housing to prevent rotation of the first sun gear.

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Номер записи: 98
13-05-2021 дата публикации

SPEED REDUCING UNIT

Номер: US20210140515A1
Автор: Isono Hiroshi
Принадлежит:

A speed reducing unit having a simple structure that can establish a large speed reduction ratio. The speed reducing unit comprises a geared transmission mechanism and a fixed member. An input member, an output member, and the geared transmission mechanism are supported by the fixed member. The geared transmission mechanism comprises: a first ring gear fixed to the fixed member; a second ring gear rotated integrally with the output member; a first pinion meshing with the first ring gear; a second pinion meshing with the second ring gear; and a carrier supporting the first pinion and the second pinion that is rotated integrally with the input member. A gear ratio between the first ring gear and the first pinion and a gear ratio between the second ring gear and the second pinion are set to different values. 1. A speed reducing unit that transmits a torque between an input member and an output member while multiplying the torque , comprising:a geared transmission mechanism that transmits a torque between the input member and the output member; anda fixed member that supports the input member, the output member, and the geared transmission mechanism in a rotatable manner, and that fixes a fixed element of the geared transmission mechanism, a first ring gear as an internal gear that is fixed to the fixed member;', 'a second ring gear as an internal gear that is attached to the output member coaxially with the first ring gear to be rotated integrally with the output member;', 'a first pinion meshing with the first ring gear;', 'a second pinion that is arranged coaxially with the first pinion to be rotated integrally with the first pinion while meshing with the second ring gear;', 'a pinion shaft that supports the first pinion and the second pinion in a rotatable manner; and', 'a carrier that supports the first pinion and the second pinion in a rotatable manner through the pinion shaft, and that is mounted on the input member to be rotated integrally with the input member, ...

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Номер записи: 99
03-05-2018 дата публикации

TRANSMISSION METHOD AND DEVICE FOR COAXIALLY OUTPUTTING AUTOROTATION AND REVOLUTION

Номер: US20180119778A1
Автор: Qu Jinping, Zhang Guizhen
Принадлежит:

Disclosed are a transmission method and a device for coaxially outputting autorotation and revolution. The axis of a power output shaft () and the axis of a crank of a power input shaft () are coincided with each other. The power output shaft () revolves around the axis of a main shaft of the power input shaft (), and the revolution speed equals to the rotation speed of the power input shaft (). After the superposition of a transition gear train (A) and a K-H-V few-tooth-difference planetary gear train (B), a driving force of the power input shaft () enables the power output shaft () to generate the autorotation which has the same speed as that of the power input shaft () but in the opposite direction, and at the same time, a thrust bearing () coaxial with the power output shaft () is connected to a thrust bearing () coaxial with the main shaft of the power input shaft () in series to bear axial loads. The transmission device for coaxially outputting autorotation and revolution is mainly formed by the power input shaft (), the transition gear train (A), the K-H-V few-tooth-difference planetary gear train (B), the thrust bearings () connected in series, and the power output shaft (), etc. The device can be combined with a plasticizing delivery device using an eccentric rotor and having pulsed volume deformation to form an extruder. 1. A transmission method for coaxially outputting rotation and revolution , characterized in that: a power input shaft is an eccentric shaft including a spindle and a crank shaft connected with each other; a power output shaft revolves around a spindle axis of the power input shaft , and meanwhile rotates reversely at the same speed around its own axis and bears an axial load , with the process specifically as follows:the power input shaft, through transmission of a K-H-V planetary gear train with small teeth difference, is used to make the axis of the power output shaft coincide with a crank-shaft axis of the power input shaft, and make ...

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Номер записи: 100