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

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Применить Всего найдено 41402. Отображено 100.
05-01-2012 дата публикации

Shock absorprion device for motor bearing system

Номер: US20120002908A1
Автор: Shen Zhang, Yingcheng Li
Принадлежит: Zhongshan Broad Ocean Motor Manufacturing Co Ltd

A shock absorption device for a motor bearing system, including a washer, an end cover, a bearing, a rotating shaft, a retaining ring, a cap, and a shock absorption pad. The bearing is disposed in a bearing seat of the end cover. The rotating shaft abuts against the bearing. The washer is disposed on the rotating shaft and on one side of the bearing. The retaining ring is buckled on the rotating shaft and axially positions the washer. The cap is disposed on the periphery of the washer, and on the end cover. The shock absorption pad is disposed on the end cover. The washer is disposed between the shock absorption pad and the retaining ring. The shock absorption pad axially separates the washer from the bearing, and end surface of the bearing seat.

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Номер записи: 1
10-10-2016 дата публикации

Трехфазный асинхронный электродвигатель

Номер: RU0000165132U1
Автор: Алексей Сергеевич Лагерев
Принадлежит: Общество с ограниченной ответственностью "Электрозавод"

Трехфазный асинхронный электродвигатель, характеризующийся тем, что содержит вал ротора, ротор, статор, передний фланцевый подшипниковый щит, вводное устройство, станину, задний подшипниковый щит, вентилятор, наружную подшипниковую крышку, пленочные уплотнения по линии вала, подшипники, заземляющее устройство, внутреннюю подшипниковую крышку, рым-болт, резиновые уплотнения вводного устройства, при этом ротор имеет шихтовочный паз, выполненный на его внутренней поверхности, и пазы, равномерно размещенные по периметру его зубцовой зоны, статор имеет шихтовочный паз, выполненный на его внешней поверхности, и пазы, равномерно размещенные по периметру его зубцовой зоны. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 165 132 U1 (51) МПК H02K 17/12 (2006.01) H02K 5/124 (2006.01) H02K 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2016103892/07, 08.02.2016 (24) Дата начала отсчета срока действия патента: 08.02.2016 (72) Автор(ы): Лагерев Алексей Сергеевич (RU) (73) Патентообладатель(и): Общество с ограниченной ответственностью "Электрозавод" (RU) R U Приоритет(ы): (22) Дата подачи заявки: 08.02.2016 (45) Опубликовано: 10.10.2016 Бюл. № 28 1 6 5 1 3 2 R U (57) Формула полезной модели Трехфазный асинхронный электродвигатель, характеризующийся тем, что содержит вал ротора, ротор, статор, передний фланцевый подшипниковый щит, вводное устройство, станину, задний подшипниковый щит, вентилятор, наружную подшипниковую крышку, пленочные уплотнения по линии вала, подшипники, заземляющее устройство, внутреннюю подшипниковую крышку, рым-болт, резиновые уплотнения вводного устройства, при этом ротор имеет шихтовочный паз, выполненный на его внутренней поверхности, и пазы, равномерно размещенные по периметру его зубцовой зоны, статор имеет шихтовочный паз, выполненный на его внешней поверхности, и пазы, равномерно размещенные по периметру его зубцовой зоны. Стр.: 1 U 1 U 1 (54) ТРЕХФАЗНЫЙ АСИНХРОННЫЙ ...

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Номер записи: 2
10-11-2016 дата публикации

Электрический генератор

Номер: RU0000165899U1
Автор: Василий Евгеньевич Медведицын
Принадлежит: Василий Евгеньевич Медведицын

1. Электрогенератор, включающий подвижные и неподвижные магниты, обращенные одноименными полюсами друг к другу, а также элемент индуктивности, характеризующийся тем, что подвижный магнит выполнен в виде цилиндра со сквозным отверстием в его центральной части и размещен в цилиндрической трубке, которую охватывает элемент индуктивности, при этом в нижней части цилиндрической трубки закреплен неподвижный магнит, верхний торец цилиндрической трубки оснащен заглушкой, выполненной из упругого материала, при этом электрогенератор оснащен корпусом, причем между корпусом и трубкой залит герметик, посредством чего цилиндрическая трубка герметично изолирована от внешней среды.2. Электрогенератор по п. 1, отличающийся тем, что неподвижный магнит отделен от подвижного магнита упругой прокладкой.3. Электрогенератор по п. 1, отличающийся тем, что между неподвижным магнитом и элементом индуктивности расположено экранирующее кольцо из электропроводного магнитного материала, которое охватывает цилиндрическую трубку.4. Электрогенератор по п. 1, отличающийся тем, что элемент индуктивности представляет собой или включает в себя соленоид, предпочтительно, соленоид с двойной обмоткой.5. Электрогенератор по п. 1, отличающийся тем, что элемент индуктивности представляет собой катушку индуктивности или соединенные в электрическую цепь катушки индуктивности, предпочтительно, плоские катушки индуктивности.6. Электрогенератор по п. 1, отличающийся тем, что он дополнительно содержит электронный блок, который выпрямляет и сглаживает пульсации генерируемого электрического тока.7. Электрогенератор по п. 6, отличающийся тем, что электронный блок включает РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 165 899 U1 (51) МПК H02K 35/02 (2006.01) H02K 5/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2016103663/07, 04.02.2016 (24) Дата начала отсчета срока действия патента: 04.02.2016 (72) Автор(ы): Медведицын Василий ...

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Номер записи: 3
28-09-2018 дата публикации

Устройство погружного маслозаполненного электродвигателя

Номер: RU0000183619U1
Автор: Азат Индусович Султанов, Алексей Евгеньевич Пантелеев, Максим Сергеевич Никитин, Николай Васильевич Отмахов, Олеся Вячеславовна Султанова, Руслан Анисович Гильфанов
Принадлежит: Открытое акционерное общество "Бугульминский электронасосный завод" (ОАО "БЭНЗ")

Полезная модель относится к нефтяному машиностроению, а именно к погружным маслозаполненным электродвигателям, входящих в состав установки скважинных электроприводных лопастных насосов. Устройство погружного электродвигателя насосной установки содержит статор 1, состоящий из корпуса 2 и магнитопровода 3 с зубцами 4 по числу N, между которыми установлены обмотки 5, установленный на подшипниках 6 ротор 7 с полым валом 8 и турбинкой 9 с радиальными отверстиями 10 для сообщения полости 11 вала 8 с полостью 12 статора 1. На наружной поверхности магнитопровода 3 на радиальных осях симметрии зубцов 4 выполнены продольные пазы 13 по числу N-1. На наружной поверхности магнитопровода 3 на радиальных осях симметрии зубцов 4 по числу N-1 выполнены продольные пазы 13. На N-м зубце 4 магнитопровода 3 по направлению его оси симметрии выполнен прямоугольный паз 14. Магнитопровод 3 установлен в корпусе 2 между гильзами 15 и 16 и стопорными кольцами 17 и 18, установленными в концентрических канавках 19 и 20, выполненных в корпусе 2. Магнитопровод 3 жестко соединен с корпусом 2, например, клеевым соединением. Использование в полезной модели гильз с каналами, стопорных колец, шпонки и клея обеспечивает максимальное заполнение железом статора и предотвращается проворот магнитопровода относительно корпуса, также уменьшает потери в электродвигателе. Использование в полезной модели нагнетателя обеспечивает эффективный отвод тепла из внутренней полости электродвигателя на наружную поверхность электродвигателя, что обеспечивает повышение его надежности и долговечности. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 183 619 U1 (51) МПК F04D 13/10 (2006.01) F04D 29/58 (2006.01) H02K 9/19 (2006.01) H02K 5/132 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04D 13/10 (2018.05); F04D 29/5806 (2018.05); H02K 9/19 (2018.05); H02K 5/132 (2018.05) (21)(22) Заявка: 2017128022, 04.08.2017 (24) Дата начала отсчета срока действия патента: Дата ...

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Номер записи: 4
12-01-2012 дата публикации

Electronically commutated electric machine

Номер: US20120007456A1
Автор: Bernd Hein, Christoph Heier, Jerome Thiery
Принадлежит: ROBERT BOSCH GMBH

The invention relates to an electronically commutated electric machine ( 1 ), comprising a stator housing ( 3 ) which receives a stator ( 4 ) in a stator chamber ( 13 ) and which delimits a rotor chamber ( 14 ) receiving a rotor. According to the invention, the stator housing ( 3 ) comprises a main housing ( 31 ) and a cover ( 9 ), wherein an elastic sealing element ( 8 ) is arranged between the main housing ( 31 ) and cover ( 9 ) and extends into the inside of the stator housing ( 3 ) with at least one radial region ( 30 ) and forms a tolerance compensating element ( 19 ) acting on the stator ( 4 ).

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Номер записи: 5
19-01-2012 дата публикации

Hydrodynamic bearing assembly and motor having the same

Номер: US20120013213A1
Автор: Jin San Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a hydrodynamic bearing assembly and a motor having the same. The hydrodynamic bearing assembly includes a sleeve having a shaft inserted thereinto; a hub base coupled to an upper portion of the shaft and rotating together with the shaft; a stopper plate fixedly coupled to an upper surface of the sleeve and preventing the shaft from lifting while the shaft rotates; and a thrust dynamic pressure generating groove formed on at least one of an upper surface of the stopper plate and a lower surface of the hub base corresponding thereto.

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Номер записи: 6
19-01-2012 дата публикации

Electric pump

Номер: US20120014819A1
Автор: Motohisa Ishiguro
Принадлежит: Aisin Seiki Co Ltd

An electric pump which includes a rotor rotationally supported by a housing at a rotation shaft, a stator positioned at an outer side in radial direction of the rotor and fixed to the housing, a pump portion for taking in and discharging fluid in response to a rotation of the rotor, and a can positioned in between the rotor and the stator for preventing the fluid in the pump portion from flowing into the stator. The can possesses conductivity. The stator is grounded via the can.

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Номер записи: 7
02-02-2012 дата публикации

Motor, electric equipment, and method of manufacturing motor

Номер: US20120025746A1
Автор: Hiroki Aso, Hiroyuki Ishii, Mamoru Kawakubo, Mineo Yamamoto, Togo Yamazaki, Tomoyuki Hasegawa
Принадлежит: Mitsubishi Electric Corp

In a motor driven by a drive circuit such as an inverter, there is a problem that electric current flowing through a bearing causes electric corrosion, which impairs the durability of the bearing. A motor of the invention includes: a stator in which a winding is applied through an insulating part to a stator core formed by laminating a predetermined number of electromagnetic steel plates which have been punched into a predetermined shape; a rotor assembly in which a rotor and bearings and formed by rolling bearings are fitted to a shaft; a printed wiring board which is arranged at an end part of the stator in an axial direction and to which a drive circuit is mounted; a bracket imposed to at least the end part of the stator in the axial direction to which the printed wiring board is arranged; and a conductive sheet provided between the printed wiring board and the bracket.

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Номер записи: 8
02-02-2012 дата публикации

Flange assembly

Номер: US20120027329A1
Автор: Franck Landrieve
Принадлежит: SKF AB

This flange assembly ( 1 ), for holding a shaft ( 2 ), comprises: a rolling bearing ( 3 ) with the inner ring ( 31 ) rotatable around an axis (X 3 -X′ 3 ), a target ( 51 ) attached to the inner ring ( 31 ), a sensing element ( 7 ), a flange ( 4 ) having securing means ( 41, 42 ) for securing said flange assembly ( 1 ) to a static casing (C). The flange assembly ( 1 ) further comprises: a holding part ( 43 ) to hold the outer ring ( 32 ), a resilient part ( 44 ) to elastically urge said holding part ( 43 ) with respect to the securing means ( 41, 42 ) and along said axis (X 3 -X′ 3 ). The sensing element ( 7 ) is attached to the holding part ( 43 ) so as to be removable from outside said static casing (C).

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Номер записи: 9
09-02-2012 дата публикации

Oil composition comprising functionalized nanoparticles

Номер: US20120032543A1
Автор: Ashley Leonard, Gaurav Agrawal, Ketankumar K. Sheth, Soma Chakraborty
Принадлежит: Baker Hughes Inc

An improved oil composition is disclosed. The oil composition includes a base oil comprising a hydrocarbon, the base oil having a base thermal conductivity. The oil composition also includes a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil having a modified thermal conductivity, wherein the modified thermal conductivity is greater than the base thermal conductivity. Alternately, an improved oil composition includes a base oil comprising a hydrocarbon and a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil comprising a stabilized suspension of the derivatized first additive nanoparticles in the base oil.

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Номер записи: 10
29-03-2012 дата публикации

Fluid bearing device

Номер: US20120073138A1
Автор: Kenji Ito
Принадлежит: Individual

Disclosed is a fluid bearing device in which a high adhesive strength is ensured in fixing another member by adhesion to a resin housing. A bearing sleeve is secured in position inside the resin housing, and a shaft member is radially supported in a non-contact fashion by a dynamic pressure action of lubricant generated in a radial bearing clearance between the shaft member and the bearing sleeve. A metal bracket for mounting the stator coil of a motor is fixed by adhesion to the outer periphery of the housing, in which the adhesion portion of the outer periphery of the housing to be fixed to the bracket is roughened, setting the surface roughness to 0.5 μmRa to 2.0 μmRa.

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Номер записи: 11
19-04-2012 дата публикации

Systems and Methods for Insulating Y-Points of Three Phase Electric Motors

Номер: US20120093666A1
Автор: John M. Knapp
Принадлежит: Individual

Systems and methods for insulating the Y-points of three-phase electric motors commonly used in ESP systems, in which the Y-points are not grounded or tied to a reference voltage, and may consequently experience high voltages. One embodiment is an apparatus for insulating the Y-point of the motor using an electrically insulating enclosure. The enclosure has apertures that extend from a cavity therewithin the to the exterior of the enclosure. The cavity accommodates the Y-point of the motor. The conductors which are connected at the Y-point junction extend from the cavity to the coils of the three-phase motor, and possibly to an instrument package. Seals are formed at the apertures to provide an electrically insulating barrier between the Y-point and the exterior of the enclosure. The cavity may be filled with an insulating material such as potting compound or oil.

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Номер записи: 12
26-04-2012 дата публикации

Tuned Bearing

Номер: US20120098358A1
Автор: Carlos A. Prieto
Принадлежит: Baker Hughes Inc

A bearing assembly for a submersible pump motor has a bearing body, having a hub, an outer portion, and a plurality of wing portions. The wing portions are spaced apart to form a plurality of cavities in the bearing body. A mass damper is mounted to the hub. The mass damper has an upper portion, a lower portion and mass damper prongs connecting the upper and lower portion. The mass damper prongs are disposed in the cavities, and act to reduce the amplitude of the vibrating frequency of the motor shaft.

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Номер записи: 13
03-05-2012 дата публикации

Pump motor control assembly

Номер: US20120104878A1
Автор: James L. Skinner, James P. Meagher, Jeffrey S. Sherman, John G. Schrader, Raymond D. Heilman
Принадлежит: Nidec Motor Corp

A pump motor assembly operable to provide driving power to a fluid pump includes a rotor, a stator, a case housing the rotor and the stator, and a control assembly mounted to the case and operable to control motor operation. The control assembly includes an information display and a cover overlying the display, with a window section in general alignment with the display. The control assembly also includes a filler plate underlying the window section to prevent any air gap along an underside thereof, allowing the display to be visible while reducing the risk of condensation buildup. The control assembly further includes a low voltage housing with the display disposed in a first compartment defined thereby, and a high voltage housing with a high voltage component disposed in a second compartment defined thereby. The low voltage housing includes a thermal and fluid barrier that substantially fluidly separates the first and second compartments to reduce the risk of liquid electrical conduction therebetween and to reduce heat transfer into the low voltage housing.

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Номер записи: 14
03-05-2012 дата публикации

Spindle motor

Номер: US20120104889A1
Автор: Jin San Kim, Ta Kyoung Lee, Young Tae Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a sleeve including a hollow part having a shaft inserted thereinto and rotatably supporting the shaft; a thrust plate coupled to a lower portion of the shaft in an axial direction to thereby rotate together with the shaft; a cover plate coupled to a lower portion of the sleeve in the axial direction and covering the hollow part; and a step part stepped upwardly from a lower surface of the thrust plate in the axial direction so that the shaft and the thrust plate are easily coupled to each other and having surface roughness greater than that of other portions of the thrust plate.

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Номер записи: 15
07-06-2012 дата публикации

Stator Manufacturing Method for a Motor and a Stator Manufactured Using the Same

Номер: US20120139387A1
Автор: Ching-Sheng Hung, Kun-Li Hsieh, Shu-Hui Chang
Принадлежит: Sunonwealth Electric Machine Industry Co Ltd

A stator manufacturing method for a motor includes an assembling step coupling a magnetic driving assembly onto an outer circumferential wall of a shaft tube, a mold combining step disposing the shaft tube and the magnetic driving assembly in an intra-cavity of a fixture unit, a glue injecting and forming step injecting a filling glue into the intra-cavity, wherein the filling glue solidifies into a protective glue coating with which the shaft tube and magnetic driving assembly are coated, a mold removing step removing the fixture unit from the shaft tube, magnetic driving assembly and protective glue coating, and a shaft tube seat coupling step providing a shaft tube seat having an engaging portion and coupling the engaging portion with the shaft tube, allowing the shaft tube, the magnetic driving assembly, the protective glue coating and the shaft tube seat to be coupled together to form a stator for the motor.

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Номер записи: 16
12-07-2012 дата публикации

Electric motor

Номер: US20120175979A1
Автор: Chi Keung Law, Tao Fu
Принадлежит: Johnson Electric SA

An electric motor has a rotor and a stator. The stator has an endcap with two brush assemblies, two brush brackets for holding the brush assemblies and two electrical terminals. Each brush assembly is detachably mounted to its brush bracket and has a brush holder, a brush slidably received in the brush holder, a spring for urging the brush out of the brush holder, and a conductive member electrically connecting the brush with a corresponding electrical terminal via a resilient releasable connection.

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Номер записи: 17
16-08-2012 дата публикации

Electric motor having an end frame

Номер: US20120205999A1
Автор: Philip A. Wilson, JR.
Принадлежит: Individual

An end frame for an electro-dynamic machine. The end frame includes a radial bearing support surface disposed concentrically about the axis and an axial bearing support surface substantially perpendicular to the axis. A base wall is substantially perpendicular to the axis. A first annular wall is disposed concentrically about the axis and extends from the base wall to the axial bearing support surface. A second annular wall is disposed radially outward of the first annular wall and cooperates therewith to define an annular space that extends from the base wall to the axial bearing support surface. A first boundary wall extends across the annular space from the base wall to the axial bearing support surface. A metering wall extends across the annular space a portion of a distance from the base wall to the axial bearing support surface. The base wall, the axial bearing support surface, the first annular wall, the second annular wall, the first boundary wall and the metering wall cooperate to define a first chamber for receiving grease.

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Номер записи: 18
16-08-2012 дата публикации

Electric motor having an end frame

Номер: US20120206022A1
Автор: Edward Drye, Philip A. Wilson, JR.
Принадлежит: Individual

An electro-dynamic machine including a rotor shaft extending along an axis and a bearing rotatably supporting the rotor shaft for rotation about the axis. An inner housing has an outer surface and defines a bearing bore. The bearing bore receives and supports the bearing. An outer housing surrounds the inner housing. A plurality of non-radial ribs extends from the outer housing to the inner housing. The non-radial ribs are coupled to the inner housing substantially tangential to the outer surface.

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Номер записи: 19
30-08-2012 дата публикации

Hydrodynamic bearing assembly and motor including the same

Номер: US20120217832A1
Автор: Won Ki Park, Young Tae Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein are a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve supporting a shaft; and a sleeve housing combined with the sleeve to prevent the leakage of oil; and at least one stepped part formed on at least one of the sleeve and the sleeve housing in order to align an axis of the sleeve with an axis of the shaft and provide a bonding space with the sleeve therebetween.

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Номер записи: 20
06-09-2012 дата публикации

Connecting Element Between a Motor and a Control Unit

Номер: US20120223604A1
Автор: Andre Skuppin, Stephan Urban, Thomas Hennecke
Принадлежит: ROBERT BOSCH GMBH

A connecting element between a motor and a control unit includes a flat base plate having electrical bushings and an, in particular centered, opening. The base plate further includes a shaft around the opening. A first seal is provided at the edge of the base plate and a second seal is provided at the upper edge of the shaft.

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Номер записи: 21
06-09-2012 дата публикации

Electric machine, in particular a canned electric motor

Номер: US20120223605A1
Автор: Ralf Bode
Принадлежит: SIEMENS AG

An electric machine includes a rotor, a stator housing and a winding assembly surrounding the rotor. The winding assembly is arranged in the stator housing and has an axially extending effective region in which the winding assembly is set up to interact electrodynamically with the rotor. The stator housing has a peripheral opening slot on the side facing the rotor. The opening slot corresponds in its axial extent to the axial extent of the effective region of the winding assembly and in which an electrically non-conductive can of the electric machine is inserted. The can is sealed off with the stator housing in such a manner that the winding assembly is hermetically separated from the rotor. The can extends axially only on the effective region of the winding assembly.

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Номер записи: 22
13-09-2012 дата публикации

Variable field magnet rotating electrical machine

Номер: US20120229066A1
Автор: Tuyoshi Nonaka
Принадлежит: Yaskawa Electric Corp

A variable field magnet rotating electrical machine includes a stator, a rotor, and a rotary position detector. The stator includes a stator winding coil and a stator iron core. The rotor includes a field magnet, a first field magnetic pole portion, and a second field magnetic pole portion. The first field magnetic pole portion is configured to turn relative to the second field magnetic pole portion. The first and second field magnetic pole portions include signal generators each configured to generate a signal to detect a rotary position of a corresponding one of the first and second field magnetic pole portions. The rotary position detector is configured to detect a rotary position of the rotor.

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Номер записи: 23
20-09-2012 дата публикации

Food waste disposer with self-compensating bearing assembly

Номер: US20120234950A1
Автор: James Hansche, Randall E. Hammer
Принадлежит: EMERSON ELECTRIC CO

A food waste disposer system, including a food conveying section and a motor section. A grinding section is coupled between the food conveying section and the motor section. The motor section includes an electric motor having a rotor. The rotor has a rotor shaft entrained in at least one self-compensating bearing assembly. In an aspect, the self-compensating bearing assembly has a split spherical bearing and a compressive bearing pocket.

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Номер записи: 24
20-09-2012 дата публикации

Fan and motor thereof

Номер: US20120235526A1
Автор: Chih-Hui WU
Принадлежит: Delta Electronics Inc

A motor includes a base, a bushing, a bearing structure, a stator structure, a rotor structure and a magnetic element. The base has a supporting platform. The bushing is connected with the base. The bearing structure is disposed in the bushing. The bushing is threaded through the stator structure. The rotor structure has a shaft, and the shaft threads through the bearing structure. The magnetic element corresponds to the shaft and is disposed on the supporting platform, and the magnetic element magnetically interacts with the shaft. A fan equipped with the motor is also disclosed.

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Номер записи: 25
27-09-2012 дата публикации

Electrical drive unit for a motor vehicle

Номер: US20120242197A1
Автор: Michael Bogner, Raphael Fischer
Принадлежит: Schaeffler Technologies AG and Co KG

An electrical drive unit for a motor vehicle, with the drive unit including a wheel-hub drive that drives a vehicle wheel and that is arranged on the vehicle wheel by a wheel bearing, the wheel-hub drive having a rotor and a stator. According to the invention, a sealing device is provided between the rotor and the stator, and/or between the rotor and a component adjacent to the rotor, and/or between the stator and a component adjacent to the stator. A sealing surface of the sealing device is arranged on a radius with the center point around a virtual tilt axis of the wheel bearing, or substantially along a tangent to the radius.

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Номер записи: 26
27-09-2012 дата публикации

Spindle motor and storage disk drive

Номер: US20120243397A1
Автор: Takashi Yamamoto, Tsuchitsugu Watanabe
Принадлежит: Nidec Corp

A spindle motor includes a stationary portion and a rotating portion including a seal defining portion. The stationary portion includes a shaft portion, an annular member fixed to an upper portion of the shaft portion in, for example, a tight-fitting condition, and a cap member. A radially inner end portion of the cap member is fixed to each of the shaft portion and the annular member preferably through, for example, an adhesive. An upper seal portion, in which a surface of a lubricating oil is arranged, is defined in an upper seal gap defined between an outer circumferential surface of the annular member and an inner circumferential surface of the seal defining portion. The cap member is arranged to cover an upper side of the upper seal portion.

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Номер записи: 27
27-09-2012 дата публикации

Fluid dynamic bearing device

Номер: US20120243813A1
Автор: Kenji Hibi, Masaaki Toda, Masaharu Hori, Tetsuya Yamamoto
Принадлежит: NTN Corp

Provided is a fluid dynamic bearing device which has excellent moment rigidity and an improved working efficiency in assembling and parts control, and in which a bearing sleeve can be easily manufactured. A plurality of bearing sleeves are axially disposed in the fluid dynamic bearing device. The bearing sleeves ( 3, 4 ) are formed with different axial lengths from each other.

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Номер записи: 28
04-10-2012 дата публикации

Motor and storage disk drive

Номер: US20120250183A1
Автор: Kazushi Miura, Mitsuhiro Takemoto, Takehito Tamaoka
Принадлежит: Nidec Corp

A motor includes a stationary portion and a rotating portion. The rotating portion includes a sleeve portion including one communicating hole arranged to extend completely there through from an upper surface to a lower surface thereof, and a cover portion including a hole portion. The axial extension range of the hole portion is arranged to overlap with the axial extension range of the communicating hole in a radial direction. A center of the hole portion is arranged on a plane including a central axis and a center of the communicating hole. The communicating hole and the hole portion are arranged on opposite sides of the central axis. The following inequality is satisfied: V 2 <(σ 1 /σ 2 )·V 1 , where σ 1 is the density of the sleeve portion, V 1 is the volume of the communicating hole, σ 2 is the density of the cover portion, and V 2 is the volume of the hole portion.

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Номер записи: 29
18-10-2012 дата публикации

Rotary motor actuator and horizontal axis wind turbine

Номер: US20120261920A1
Автор: Akihiro Unno, Ayako Miyajima, Kazuhiro Tani, Tomoyuki Aida, Toshiyuki Aso, Yuki Hayashi
Принадлежит: THK Co Ltd

Provided is a rotary motor actuator capable of simplifying the manufacture and assembly process. A base 22, a table 21, a stator 25 and a rotor 26 of a rotary motor 31 and a first member 12 and a second member 14 of a guide mechanism 24 have a plurality of base segments 22 a, a plurality of table segments 21 a, a plurality of stator segments 25 a, a plurality of rotor segments 26 a, a plurality of first member segments 12 a and a plurality of second member segments 14, respectively, which all arranged circumferentially around a center line C. The stator segments 25 a are connected to the base segments 22 a, to which the first member segments 12 a are connected. The rotor segments 26 a are connected to the table segments 21 a, to which the second member segments 14 a are connected.

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Номер записи: 30
18-10-2012 дата публикации

Resolver of electric driving motor for vehicle

Номер: US20120262015A1
Автор: Bum-yul Lee, Eun-cheol Hong, Geon-ho Park, Gyu-ryong Choi, Hak-su Jang, Hong-Chan Eom, Hyun-ho Huh, In-sub Shin, Kwang-hyeon Park, Man-heung Han, Seung-Pil Choi, Yeong-sik Kim
Принадлежит: Daesung Electric Co Ltd

The present invention relates to a resolver of an electric driving motor for vehicle which comprises a rotor, a stator comprising a stator main body which encircles the rotor and teeth which extend from the stator main body to be wound by a coil, a terminal module comprising a terminal end which contacts the coil for an electric connection and a terminal main body which supports the terminal end, and a connector module comprising a connector main body which is detachably coupled to the terminal main body and a lead line which is connected to an outer device and supported by the connector main body and which contacts the terminal end for an electric connection if the connector main body is coupled to the terminal main body, thus simplifying manufacturing process and repairing process and reducing cost.

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Номер записи: 31
01-11-2012 дата публикации

Systems and Methods for Electric Motor Construction

Номер: US20120275942A1
Автор: John M. Knapp, Larry J. Parmeter, Sean A. Cain, Sergio A. PESEK, Thien Q. Tran
Принадлежит: Individual

Systems and methods for constructing electric motors in which a stator core includes inner and outer portions that enable slots for magnet windings to be open during construction and closed in the completed motor. One embodiment comprises a method in which an inner stator core having a plurality of slots is formed by stacking a set of laminations. The slots are open radially outward from an axis of the inner stator core and which are configured to accommodate turns of magnet wire. After the magnet wire is positioned in the open slots, an outer stator core comprising stacked laminations is positioned around the inner stator core, enclosing the slots. The inner and outer stator cores are then positioned within a housing and assembled into a downhole motor.

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Номер записи: 32
29-11-2012 дата публикации

Compressor and Refrigerating Cycle Apparatus

Номер: US20120301334A1
Автор: Baiying Huang, Hiroyasu Yoneyama, Kazuo Sakurai
Принадлежит: Hitachi Appliances Inc

In a conventional compressor, since a motor and a mechanical section of the compressor are disposed in one and the same closed container, the motor is exposed to high-temperature coolant and heated, and the efficiency of the motor is lowered. Further, during the operation of the compressor, the coolant circulating in the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered. The compressor according to the present invention includes a compression chamber divided into a closed chamber and an open chamber separated by a magnetic induction plate from each other. The closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.

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Номер записи: 33
27-12-2012 дата публикации

Bearing apparatus, spindle motor, and disk drive apparatus

Номер: US20120326543A1
Автор: Akihiro Kimura, Kazuhiro Sato, Kunio SAKURADA, Kyoko HORISE, Takehito Tamaoka, Teiichi Hirono, Yoichi Sekii
Принадлежит: Nidec Corp

A bearing apparatus includes a stationary shaft, a first annular member, and a rotating member. The rotating member includes a first inner circumferential surface arranged opposite to the outer circumferential surface of the stationary shaft, and a second inner circumferential surface arranged opposite to an outer circumferential surface of the first annular member. A lubricating oil is arranged in a gap between a surface of a stationary member and the rotating member. On an upper side of an upper surface of the lubricating oil, the first annular member and the rotating member are arranged radially opposite to each other with a slight gap defined therebetween, so that a labyrinth seal is defined. The labyrinth seal and a fixing range over which the stationary shaft and the first annular member are fixed to each other are arranged to overlap with each other in a radial direction.

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Номер записи: 34
10-01-2013 дата публикации

Spindle motor

Номер: US20130009500A1
Автор: Dong Hyun Lee
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a sleeve including a shaft rotatably mounted therein and a circulation hole formed therein; and a cover member mounted on a lower end portion of the sleeve and including an opening/closing part opening and closing the circulation hole.

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Номер записи: 35
17-01-2013 дата публикации

Motor mount for a power tool

Номер: US20130014968A1
Автор: Benjamin Ludy, Michael Naughton, Sean T. KEHOE, Troy C. Thorson
Принадлежит: Milwaukee Electric Tool Corp

A power tool includes a motor having a can and a shaft extending axially from the can, a gear case having an inner surface that defines an opening, a bearing positioned around a portion of the shaft that extends from the can and at least partially within the opening in the gear case, and a motor mount coupled to the motor. The motor mount includes a flange extending away from the motor. The flange of the motor mount and the inner surface of the gear case axially and laterally locate the motor and the gear case on the bearing.

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Номер записи: 36
07-02-2013 дата публикации

Method of Securing a Sealing Device to a Housing with a Limited Bore Diameter

Номер: US20130033139A1
Автор: Christopher E. Tones, Earl Rogalski
Принадлежит: GARLOCK SEALING TECHNOLOGIES LLC

An apparatus including a seal and a grounding ring along with methods for securing such an apparatus to the housing of a motor. The apparatus comprises an electrically conductive stator including a groove formed in a face thereof. A rotor mates with the stator, wherein the rotor includes a seal groove formed around an inner radius thereof and further comprising a rotor seal disposed in the seal groove. A seal ring is interposed between the stator and the rotor. The stator engages the seal ring around an inner circumference of the seal ring and the rotor engages the seal ring around an outer circumference of the seal ring. A grounding ring is interposed between the stator and the rotor, wherein the grounding ring is electrically coupled to the stator. An electrically conductive adhesive is included for application into the groove and onto the face.

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Номер записи: 37
07-03-2013 дата публикации

Generator and accessory gearbox device with a generator

Номер: US20130057093A1
Автор: Juergen BEIER, Soeren Braun
Принадлежит: Rolls Royce Deutschland Ltd and Co KG

The present invention proposes a generator for arrangement on a shaft of an accessory gearbox of an engine with a stator and with a rotor which can be coupled to a shaft of the accessory gearbox of the engine and which is rotatably mounted relative to the stator, where a stator area receiving the stator can be separated from a rotor area receiving the rotor. The rotor can be supplied with cooling medium in the rotor area. It furthermore proposes an accessory gearbox of an engine with a drive shaft operatively connectable to a main shaft of the engine and with at least one generator arranged on a shaft of the accessory gearbox.

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Номер записи: 38
14-03-2013 дата публикации

Wind turbine rotary electric machine

Номер: US20130062975A1
Автор: Matteo Casazza, Otto Pabst
Принадлежит: Willic SARL

A wind turbine rotary electric machine having a tubular body, in turn having a cylindrical wall; and a plurality of clips formed integrally with the cylindrical wall and configured so that each pair of facing clips defines a seat for housing an active sector.

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Номер записи: 39
14-03-2013 дата публикации

Driving force transmission device

Номер: US20130062980A1
Автор: Kunihiko Nishimura, Shigeru Ishii, Takashi Kuwahara, Tatsuya Osone, Tomoharu Fujii
Принадлежит: Nissan Motor Co Ltd

A hybrid driving force transmission device includes a motor generator ( 9 ), a multi-plate dry clutch ( 7 ), a housing cover ( 60 ), a dust seal member ( 62 ), and a dust collection structure ( 63 ). The multi-plate dry clutch ( 7 ) is disposed at a position inner than the motor generator ( 9 ). The housing cover ( 60 ) is provided to cover the motor generator ( 9 ) and the multi-plate dry clutch ( 7 ), and divides the internal space into a clutch chamber ( 64 ) and a motor chamber ( 65 ). The dust seal member ( 62 ) is disposed at a position radially outside of a clutch chamber open surface ( 66 ) and seals between a rotor ( 92 ) and an inner wall ( 60 a ) of the housing cover ( 60 ). The dust collection structure ( 63 ) forms a dust collection space ( 69 ) in a region radially between the seal surface ( 68 ) formed by the dust seal member ( 62 ) and the clutch chamber open surface ( 66 ).

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Номер записи: 40
28-03-2013 дата публикации

DRUM MOTOR

Номер: US20130076201A1
Автор: Dudek Siegmund, FROEBUS Gerhard, Velladurai Palani
Принадлежит: INTERROLL HOLDING AG

A drum motor has a drum motor shell having a hollow space therein, a rotor and a stator, and bearing journals in the drum motor shell, the rotor and the stator being mechanically coupled to the drum motor shell and the bearing journals in such a way that relative rotation between the rotor and the stator causes relative rotation between the drum motor shell, and the bearing journals. The drum motor shell has at least one torque transfer section in which the outer surface of the drum motor shell is polygonal in cross-section. The sprocket has a polygonal, preferably hexagonal inner recess. 1. A drum motor for driving a conveyor belt , in particular a modular belt in hygienic surroundings involving exposure to splash water and pressurized water , comprising:a drum motor shell having a hollow space therein,motor components arranged in said hollow space, namely a rotor and a stator,a first bearing journal arranged at a first end of the drum motor shell, anda second bearing journal arranged at a second end of the drum motor shell,the rotor and the stator being mechanically coupled to the drum motor shell and to the first and second bearing journals in such a way that relative rotation between the rotor and stator causes relative rotation between the drum motor shell, for the one part, and the first and second bearing journals, for the other part,the drum motor shell having at least one torque transfer section in which the outer surface of the drum motor shell is polygonal in cross-section,{'b': '110', 'characterized in that the inner surface of the drum motor shell () in the torque transfer section is polygonal in cross-section.'}2. The drum motor according to claim 1 ,characterized in that the inner surface of the drum motor shell in the torque transfer section is parallel to the outer surface of the drum motor shell.3. The drum motor according to claim 1 ,characterized in that at least one of the outer surface of the drum motor shell in the torque transfer section and ...

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Номер записи: 41
11-04-2013 дата публикации

Fluid-sealing electric motor connector and motor

Номер: US20130088106A1
Автор: Harold Bitzer, Katja Klingenfuss
Принадлежит: ROBERT BOSCH GMBH

The invention relates to a fluid-sealing electric motor connector ( 1 ) for a housing ( 70 ) of an electric motor ( 7 ), in particular an electric motor ( 7 ) of an engine cooling fan or of an ABS/ESP system of a motor vehicle, comprising a connector housing ( 10 ), which can be attached to the housing ( 70 ) and by means of which at least one electrical line ( 80 ) can be connected to the electric motor so as to be fluid-sealed to the electric motor ( 7 ), wherein the connector housing ( 10 ) can be fastened to the housing ( 70 ) by means of a locking spring ( 50 ) or a catch mechanism, wherein the fluid-sealing electric motor connector ( 1 ) can be fastened to the housing ( 70 ) in an easily detachable manner. The invention further relates to a motor, in particular an electric motor ( 7 ) for an engine cooling fan or an ABS/ESP system of a motor vehicle, or a completed electrical cable ( 8 ) for a motor ( 7 ), in particular an electric motor ( 7 ), wherein the motor ( 7 ) or the completed electrical cable ( 8 ) has a fluid-sealing electric motor connector ( 1 ) according to the invention.

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Номер записи: 42
18-04-2013 дата публикации

DRIVE UNIT FOR A WINDSCREEN WIPER DEVICE IN A VEHICLE AND HOUSING FOR A DRIVE UNIT

Номер: US20130093267A1
Автор: Hartmann Werner, Heuberger Christof, Kindel Mathias, Stefani Siegfried
Принадлежит: VALEO WISCHERSYSTEME GMBH

The invention relates to a drive unit () for a windscreen wiper device in a vehicle with a multiple-section housing () with a drive motor (), more particularly connected to the housing (), which is at least indirectly controllable by means of conductor leads (), more particularly in the form of punched components, whereby the conductor leads () end in a plug connection () of the housing () via which the drive motor () is externally electrically powered, whereby the housing (), at least in the housing section (to ) accommodating the conductor leads () is designed as an injection moulded component, in which the conductor leads () are at least partially overmoulded with the material of the housing section (to ). In accordance with the invention it is envisaged that the conductor rods () are also arranged in a sealed manner on the inside of the housing () so that the penetration of moisture into at least the section of the inside of the housing () overmoulded by the material of the housing section (to ) is prevented. 1. A drive unit for a windscreen wiper device in a vehicle with a multiple-section housing with a drive motor connected to the housing , wherein the drive motor is at least indirectly controllable by means of conductor leads in the form of punched components , whereby the conductor leads end in a plug connection of the housing via which the drive motor is externally electrically powered , whereby the housing , at least in the housing section accommodating the conductor leads is designed as an injection moulded component , in which the conductor leads are at least partially overmoulded with a material of the housing section , wherein the conductor rods are also arranged in a sealed manner on the inside of the housing so that the penetration of moisture into at least a section of an inside of the housing overmoulded by the material of the housing section is prevented.2. The drive unit in accordance with claim 1 , wherein the conductor leads have additional ...

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Номер записи: 43
25-04-2013 дата публикации

Spindle motor

Номер: US20130099625A1
Автор: Jin San Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor including: a shaft forming a rotation center of the motor; a sleeve receiving the shaft therein and rotatably supporting the shaft; a thrust plate protruding in a direction vertical to an axial direction of the shaft and coupled to an upper end portion of the sleeve in the axial direction; and a stopper including a first plate covering an upper end surface of the thrust plate in the axial direction and a second plate bent from one side end of the first plate in a downward axial direction. According to a preferred embodiment of the present invention, a bent stopper is coupled to one side end of a thrust plate of the spindle motor using a fluid dynamic pressure bearing, thereby making it possible to secure a double or more storage space of oil which is an operating fluid.

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Номер записи: 44
02-05-2013 дата публикации

Electrical Machine for Submerged Application and Energy Conversion System

Номер: US20130106111A1
Автор: Höyland Jörg, Matveev Alexey, Övrebö Sigurd, Stornes Stig Ove
Принадлежит: SMARTMOTOR AS

The invention relates to an electrical machine for submerged applications and an energy conversion system for conversion of mechanical energy of unidirectional or reciprocating linear or rotational motion into electric energy and vice versa. The electric energy may be in the form of DC or AC current and voltage. The system is totally submerged in pure or salt water. The enabling element of the invention is multi-pole permanent magnet synchronous machine with separately encapsulated stator and rotor, integrated with mechanical system and power electronics. 124-. (canceled)25202132332227262132332522232122. An electrical machine () for submerged applications , comprising a stator () including a complete laminated core () and winding () providing a multiple-phase AC output voltage , and a rotor () consisting of rotor back iron () and permanent magnets () , characterized in that the stator () , including both laminated core () an windings () , is encapsulated in composites () or a polymer and the rotor () is either encapsulated in composites or a polymer or protected by other means , and a gap () between the stator () and the rotor () is open to surrounding fluid.2620. The electrical machine according to claim 25 , wherein the electrical machine () is a low-speed high-torque machine claim 25 , such as a multi-pole synchronous machine with permanent magnets.2721323325. The electrical machine according to claim 25 , wherein the stator () is made only of laminations () claim 25 , winding () and a polymer or composites ().2821. The electrical machine according to claim 25 , wherein the stator () is molded claim 25 , solid and fully encapsulated claim 25 , with no air or fluid within the encapsulation.292122. The electrical machine according to claim 25 , wherein the encapsulation of the stator () or rotor () is made by employing a vacuum process.302122. The electrical machine according to claim 25 , wherein the encapsulation of the stator () or rotor () is made by employing ...

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Номер записи: 45
02-05-2013 дата публикации

Housing For An Actuator For Receiving An Electric Motor And An Assembly

Номер: US20130106219A1
Автор: SCHILL Jürgen, Schneider Helmut
Принадлежит: MINEBEA CO., LTD.

A housing for an actuator for receiving an electric motor and further functional units of the actuator, wherein a can is integrally molded to an inner face of the housing that is designed to receive the electric motor and wherein means of fastening are integrally molded to the can that are designed to position and fix the electric motor accommodated in the can. 111. A housing () for an actuator for receiving an electric motor and further functional units of the actuator ,{'b': 13', '11', '13, 'wherein a can () is integrally molded to an inner face of the housing (), the can () being designed to receive the electric motor, and'}{'b': 13', '13, 'wherein means of fastening are integrally molded to the can () that are designed to position and fix the electric motor accommodated in the can ().'}2. A housing according to claim 1 , wherein the means of fastening interact with corresponding fastening elements on the electric motor.31513. A housing according to claim 1 , wherein the means of fastening comprise pins () integrally molded to the can ().413. A housing according to claim 1 , wherein the can () is dimensioned such that it tightly encloses the outside circumference of the electric motor and forms the motor housing.59. A housing according to that is designed to receive a gear unit () having at least two gear stages and to position and support the gear stages with respect to one another and with respect to the electric motor.611157. A housing according to claim 1 , wherein means of fastening are integrally molded to the housing () claim 1 , particularly pins () for positioning and fixing further functional units claim 1 , such a circuit board ().7. A housing according to that is formed as a one-piece injection-molded part.811317. An assembly having a housing () according to and having an electric motor whose stator () has slot insulation () claim 1 ,{'b': 17', '13, 'wherein the slot insulation () has fastening elements that interact with the means of fastening ...

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Номер записи: 46
02-05-2013 дата публикации

Motor-driven compressor

Номер: US20130108485A1
Автор: Ken Suitou, Tsuyoshi Yamaguchi, Yusuke Kinoshita
Принадлежит: Toyota Industries Corp

A motor-driven compressor includes a compression mechanism compressing refrigerant gas, an electric motor driving the compression mechanism, a housing made of a thermally conductive material and accommodating the compression mechanism and the electric motor and an inverter assembly controlling rotation of the electric motor. The inverter assembly includes an elastic member made of a thermally conductive material and disposed in contact with the housing, a circuit board supported directly by the elastic member, an electronic part mounted on the circuit board and a base member made of a thermally conductive material, fixed to the housing and having a closed end. The base member fixes the electronic part. The base member and the housing cooperate to form an accommodation space that accommodates the elastic member, the circuit board and the electronic part. The closed end of the base member and the elastic member forms therebetween a space.

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Номер записи: 47
09-05-2013 дата публикации

Bearing assembly and motor including the same

Номер: US20130113315A1
Автор: Han Byul Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a bearing assembly including: a sleeve supporting a shaft; a base cover coupled to the sleeve by press-fitting and closing a lower portion of the sleeve; and at least one deformation prevention part formed to be depressed from an outer peripheral surface of the base cover in an inner diameter direction and preventing deformation of the base cover when the base cover is press-fitted into the sleeve.

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Номер записи: 48
09-05-2013 дата публикации

Electromagnetic module and spindle motor having the same

Номер: US20130113322A1
Автор: Nam Ki Park, Sang Jae Song
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein are an electromagnetic module for a spindle motor including a shaft and a spindle motor having the same. The electromagnetic module includes: an armature including a core and a coil wound around the core; and a magnet facing the armature, wherein the magnet is provided with a protrusion part disposed over the core. The spindle motor includes: a rotor part including a shaft, a hub, and a magnet; a stator part including a sleeve rotatably supporting the shaft, a base having the sleeve coupled thereto, and an armature facing the magnet, fixedly coupled to the base, and including a core and a coil; and a fluid dynamic bearing part formed between the rotor part and the stator part by being filled with oil, wherein the magnet is provided with a protrusion part disposed over the core.

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Номер записи: 49
16-05-2013 дата публикации

DYNAMO-ELECTRIC MACHINE

Номер: US20130119800A1
Автор: HUSBAND Stephen Mark, SMITH Alexander Charles, Tuohy Paul
Принадлежит: ROLLS-ROYCE PLC

A dynamo-electric machine, for example a marine propulsion unit, includes a stator and a rotor in the form of an impeller. The impeller is rim-driven and includes an annular core of ferromagnetic material, on which are provided layers in the form of an environmental enclosure and electrically conductive sleeves. Appropriate selection of the materials and thicknesses of the layers enables the starting and normal running performance of the machine to be optimised. 115-. (canceled)16. A dynamo-electric machine comprising a rotor which is rotatable within a stator provided with stator windings , the rotor comprising an annular core of ferromagnetic material provided with external circumferential layers , the layers comprising an environmental enclosure and at least one sleeve of electrically conductive material disposed between the rotor core and the environmental enclosurewherein:the environmental enclosure is made from an electrically conductive material and the electrical resistance of the environmental enclosure is higher than that of the or each sleeve.17. A machine as claimed in claim 16 , in which the annular core is provided with circumferentially distributed electrically conductive rotor bars.18. A machine as claimed in claim 16 , in which the annular core is provided with circumferentially distributed permanent magnets.19. A machine as claimed in claim 16 , in which the sleeve claim 16 , or at least one of the sleeves claim 16 , is provided with apertures.20. A machine as claimed in claim 19 , in which the apertures define circumferentially distributed bars extending longitudinally of the respective sleeve.21. A machine as claimed in claim 16 , in which the layers comprise at least two sleeves.22. A machine as claimed in claim 16 , in which the layers are of progressively reducing electrical resistance in the radially inwards direction.23. A machine as claimed in claim 22 , in which the difference in electrical resistance between the layers results from ...

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Номер записи: 50
16-05-2013 дата публикации

Canned motor for reducing cogging torque

Номер: US20130119818A1
Автор: Bong Sang Lee, Chi Myung Kim, Hark Koo Kim, Jea Woong Yi, Seung Yong Lee, Tae Sung Oh, Yong Sun Park, Yu Man Won, Yun Seok Kim
Принадлежит: Hyundai Motor Co, Kia Motors Corp, Myunghwa Ind Co Ltd

Disclosed is a canned motor for restraining a cogging torque from being generated by inserting magnetic metal pins into slot openings of a stator, thereby reducing noise and vibrations during an operation of the canned motor. The canned motor includes: a can inserted into a housing to seal a coil mounted within the housing; and a stator installed on an outer peripheral surface of the can and inserted along an inner peripheral surface of the housing. A plurality of fixing guides protrude from an outer peripheral surface of the can and metal pins are inserted into the fixing guides to be integral with the fixing guide, such that the metal pins are inserted into and attached to slot openings of the stator when inserted into the stator.

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Номер записи: 51
16-05-2013 дата публикации

MOTOR AND FAN MOTOR USING THE SAME MOTOR

Номер: US20130119828A1
Автор: Hidaka Masahito, Kamada Yasushi, Kojima Masao, Kuyama Koji, Sadanaga Yuichiro
Принадлежит: Panasonic Corporation

A motor includes a shaft, a bearing for supporting the shaft rotatably, a rotor including a rotor frame to be mounted to the shaft along an axial direction of the shaft, a stator confronting an outer wall of the rotor via a space, and a washer disposed between the bearing and the rotor frame. On top of that, a step section forming a recess is provided to the rotor frame at a place where the washer confronts the rotor frame. 1. A motor comprising:a shaft;a bearing for supporting the shaft rotatably;a rotor including a rotor frame to be mounted to the shaft along an axial direction of the shaft;a stator confronting an outer wall of the rotor via a space; anda washer disposed between the bearing and the rotor frame,wherein a step section forming a recess is provided in the rotor frame at a place where the washer confronts the rotor frame.2. The motor of claim 1 , wherein the rotor and the stator are disposed such that a magnetic center of the rotor is away from a magnetic center of the stator by a given distance for magnetic restoring force to work between the rotor and the stator.3. The motor of claim 1 , wherein a plurality of the washers is disposed between the bearing and the rotor frame.4. The motor of claim 1 , wherein the step section is formed in the rotor frame around an outer wall of the shaft.5. The motor of claim 1 , wherein a buffering member is disposed in the step section. The present invention relates to a structure of a motor, and a fan motor including the same motor.A motor has been structured by various methods, and one of the conventional methods is this: A rotor and a stator are combined together such that a magnetic center of the rotor is away from a magnetic center of the stator by a given distance relative to an axial direction of a shaft. In this case, the rotor is supported by using the force to bring the magnetic center of the rotor in agreement with that of the stator along the axial direction. When a device including the foregoing motor is ...

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Номер записи: 52
23-05-2013 дата публикации

Hydrodynamic bearing assembly and motor including the same

Номер: US20130127273A1
Автор: Ta Kyoung Lee
Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve having a shaft hole into which a shaft is rotatably inserted; and a hub fixed to an upper end of the shaft and extended in an outer radial direction, wherein an upper surface of the sleeve and a lower surface of the hub have an oil interface formed therebetween to seal oil.

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Номер записи: 53
23-05-2013 дата публикации

ELECTRIC MOTOR ASSEMBLY

Номер: US20130127275A1
Автор: Camilleri Steven, Turner Matthew
Принадлежит:

An axial flux electric motor is disclosed. The motor includes a rotor having a first rotor face, a second rotor face, a primary bearing locator on the first rotor face and one or more permanent magnets mounted to the first rotor face. Also included is a stator having a first stator face, a second stator face, a secondary bearing locator on the first stator face, a stator winding having one or more conductors and a connector for connection of the stator winding to a power source. A bearing assembly is also provided and positioned between the first face of the rotor and the first face of the stator for rotationally supporting movement of the rotor relative to the stator, the bearing assembly axially displacing the rotor from the stator to provide an air gap therebetween. The bearing assembly is engaged by the primary and secondary bearing locators to correctly position the bearing assembly. 1. An axial flux electric motor comprising:a rotor having a first rotor face, a second rotor face, a primary bearing locator on the first rotor face, and one or more permanent magnets mounted to the first rotor face;a stator having a first stator face, a second stator face, and a secondary bearing locator on the first stator face.;a bearing assembly positioned between the first rotor face of the rotor and the first stator face of the stator for rotationally supporting movement of the rotor relative to the stator, the bearing assembly axially displacing the rotor from the stator to provide an air gap therebetween;wherein the bearing assembly is engaged by the primary and secondary bearing locators to correctly position the bearing assembly.2. The axial flux electric motor of claim 1 , wherein the bearing assembly is ring shaped having an outer ring and an inner ring; the primary bearing locator positioned on the rotor to engage the outer ring of the bearing assembly to correctly position the bearing assembly with respect to the rotor; and the secondary bearing locator positioned on ...

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Номер записи: 54
30-05-2013 дата публикации

Spindle motor and method of manufacturing the same

Номер: US20130134812A1
Автор: Young Ha Park
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a shaft connected directly or indirectly to a base member and having a depression groove formed in a central portion of an outer peripheral surface thereof; a sleeve rotatably installed on the shaft and having a communication hole formed so as to be connected to the depression groove; and a rotor hub fixedly installed on the sleeve to thereby rotate together therewith, wherein the communication hole is inclined so that lubricating fluid may be easily injected into the depression groove, and the sleeve has a fluid storage part formed on an outer peripheral surface thereof, the fluid storage part being connected to the communication hole and temporarily storing the lubricating fluid therein.

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Номер записи: 55
30-05-2013 дата публикации

MOTOR FOR ELECTRIC POWER STEERING

Номер: US20130134841A1
Автор: NISHIKAWA Hideya, Sonoda Isao
Принадлежит: Mitsubishi Electric Corporation

Provided is a motor for electric power steering, which prevents a foreign substance from entering the interior of a controller. The motor for electric power steering includes a resolver structure provided between a housing for separating the controller and a resolver from each other and an insulator opposed to the housing so as to surround a fixing portion for fixing base end portions of terminals electrically connected to distal end portions of conductors of coils, the resolver structure preventing a foreign substance from passing between the housing and the insulator to enter the interior of the controller. 1. A motor for electric power steering , comprising:a motor main body for outputting an assist torque to a steering wheel of a vehicle;a resolver provided to one end portion of a shaft of the motor main body, for detecting a rotational position of a rotor provided to another end portion of the shaft;a controller provided between the resolver and the motor main body so as to be shielded from the resolver, for controlling supply of a current from a battery mounted in the vehicle to the motor main body so as to control driving of the motor main body; andterminals for electrically connecting the resolver and the controller, for transmitting an output voltage from the resolver to the controller,the resolver including a stator core having teeth, an insulator covering the stator core, and coils wound around the teeth through the insulator,wherein the motor for electric power steering includes sealing means provided between the housing for separating the controller and the resolver from each other and the insulator opposed to the housing so as to surround a fixing portion for fixing base end portions of the terminals electrically connected to distal end portions of conductors of the coils, for preventing a foreign substance from entering interior of the controller.2. A motor for electric power steering motor according to claim 1 , wherein the insulator and the fixing ...

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Номер записи: 56
06-06-2013 дата публикации

Explosion-proof, compound electric motor

Номер: US20130140929A1
Автор: Ho-Kyoung Lee, Nam-Gak Hur, Sung-Hyo Kwak
Принадлежит: Hyundai Heavy Industries Co Ltd

Provided is a combined explosion-proof electromotor, which includes a body in which an interior space is formed and whose one end is open in an axial direction, a terminal box whose one end is open in the axial direction so as to face the open end of the body and in which a space is formed to hold terminal cables extending from the outside, and a middle plate that is disposed between the opposing ends of the body and the terminal box which are connected by separate fastening means and that includes terminal insertion holes through which ends of the terminal cables are inserted into the body.

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Номер записи: 57
06-06-2013 дата публикации

Brush cover for a brush-commutated electric motor and electric motor

Номер: US20130140941A1
Автор: Arnold Teimel, Dirk Uhlich, Reto Walker
Принадлежит: Maxon Motor AG

The present invention relates to a brush cover for a brush-commutated electric motor. The brush cover comprises at least one lever brush which is mounted rotatably about an axis at the brush cover by means of a bolt. According to the invention, the bolt is surrounded, at least in sections, by at least one damping sleeve of an elastomer.

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Номер записи: 58
06-06-2013 дата публикации

MOTOR FOR ELECTRIC POWER STEERING DEVICE

Номер: US20130140964A1
Автор: Akutsu Satoru, ASAO Yoshihito, Matsunaga Toshihiro, Takashima Kazuhisa
Принадлежит: Mitsubishi Electric Corporation

A motor for an electric power steering device, includes: a housing side bearing which is placed on the output side of a shaft of a rotor placed in a frame, and is supported by a housing connected to the frame; and a frame side bearing which is placed on the opposite output side of the shaft of the rotor, and is composed of an outer ring and an inner ring supported by the frame. The motor is controlled by an electronic control unit which is coaxially placed with the rotor, the motor including: a bearing box which supports the frame side bearing, and is formed with a closed end section between the closed end section and the side of the frame side bearing; an axial elastic body which is placed on the closed end section of the bearing box, and applies a preload in an axial direction to the outer ring of the frame side bearing; and a radial elastic body which is placed on the outer circumferential side of the outer ring of the frame side bearing, and applies a preload in a direction perpendicular to the axial direction. 117-. (canceled)18. A motor for an electric power steering device , comprising:a rotor which is placed in a frame;a housing side bearing which is placed on the output side of a shaft of said rotor, and is supported by a housing connected to said frame; anda frame side bearing which is placed on the opposite output side of said shaft of said rotor, and is composed of an outer ring and an inner ring supported by said frame,wherein said motor is controlled by an electronic control unit which is coaxially placed with said rotor on the output side of said shaft of said rotor, said motor including:a bearing box which supports said frame side bearing, and is formed with a closed end section having an air gap between the closed end section and the side of said frame side bearing;an axial elastic body which is placed on the closed end section of said bearing box, and applies a preload in an axial direction to said outer ring of said frame side bearing; anda radial ...

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Номер записи: 59
13-06-2013 дата публикации

BEARING DEVICE AND ELECTRIC MOTOR HAVING THE SAME

Номер: US20130147295A1
Автор: Shimizu Masaaki
Принадлежит: ASMO CO., LTD.

A radial bearing is received in and is fixed to a bearing receiving portion of a yoke housing, which includes large and small diameter parts, to rotatably support a rotatable shaft. A thrust ball and a thrust plate are received in the bearing receiving portion on an axial side of the radial bearing, which is opposite from the rotatable shaft. The large diameter part receives and holds the radial bearing. The small diameter part holds the thrust ball. The thrust plate is held by an axial end area of the small diameter part. 1. A bearing device for an electric motor , comprising:a bearing receiving portion that axially outwardly projects from a yoke housing of the electric motor and receives an end portion of a rotatable shaft of the electric motor, wherein the bearing receiving portion is seamlessly and integrally formed with the rest of the yoke housing;a radial bearing, which is received in and is fixed to the bearing receiving portion, wherein the radial bearing rotatably supports the end portion of the rotatable shaft to support a radial load of the rotatable shaft; anda thrust ball and a thrust plate that are received in the bearing receiving portion on an axial side of the radial bearing, which is opposite from the rotatable shaft, to support a thrust load of the rotatable shaft, wherein:the bearing receiving portion includes a large diameter part, which receives and holds the radial bearing, and a small diameter part, which has an inner diameter smaller than an inner diameter of the large diameter part and holds the thrust ball; andthe thrust plate is held by an axial end area of the small diameter part on one axial side of the thrust ball, which is axially opposite from the rotatable shaft.2. The bearing device according to claim 1 , wherein:the bearing receiving portion is configured into a cup-shaped form that axially outwardly projects from an axial bottom portion of the yoke housing;the large diameter part is configured into a generally cylindrical ...

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Номер записи: 60
13-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130147322A1
Автор: KIM Chan Seok
Принадлежит: LG INNOTEK CO., LTD.

A spindle motor is provided, the motor including a bearing assembly including a bearing housing accommodating a bearing, a stator coupled to an ambience of the bearing housing, a rotation shaft rotatably accommodated into the bearing, a rotor coupled to the rotation shaft to rotate in association with the stator, a base plate coupled to the bearing housing, and a circuit board arranged at an upper surface of the base plate to be electrically connected to the stator. 1. A spindle motor , the spindle motor comprising:a bearing assembly including a bearing housing accommodating a bearing;a stator coupled to an ambience of the bearing housing;a rotation shaft rotatably accommodated into the bearing;a rotor coupled to the rotation shaft to rotate in association with the stator; a base plate coupled to the bearing housing; anda circuit board arranged at an upper surface of the base plate to be electrically connected to the stator.2. The spindle motor of claim 1 , wherein the base plate is formed with at least one circuit board fixing unit clamping an edge of the circuit board by cutting and bending a part of the base plate.3. The spindle motor of claim 2 , wherein the circuit board fixing unit is arranged on both sides of the bearing assembly based on the bearing assembly.4. The spindle motor of claim 1 , wherein the circuit board fixing unit includes a first fixing unit cut and bent from the base plate and a second fixing unit bent toward an upper surface of the circuit board from the first fixing unit.5. The spindle motor of claim 4 , wherein an angle formed by the first fixing unit and the upper surface of the base plate is an obtuse angle.6. The spindle motor of claim 5 , wherein the second fixing unit is formed in parallel with the upper surface of the circuit board.7. The spindle motor of claim 4 , wherein a gap between the upper surface of the base plate and an upper surface of the second fixing unit is 0.4 mm˜2 mm.8. The spindle motor of claim 2 , wherein the ...

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Номер записи: 61
20-06-2013 дата публикации

ACTUATING DRIVE FOR A MOTOR VEHICLE

Номер: US20130154402A1
Автор: Basavarajappa Madhu S., Cavalie Nicolas, Erices Bernardo, Kunst Frank
Принадлежит:

The invention relates to an actuating drive for a motor vehicle. It is an object of the invention to provide a further developed actuating drive. It is sought in particular for the actuating drive, in one embodiment, to have a small installation space and/or to be protected against the infiltration of dust and moisture. To achieve the object, the actuating drive comprises a drive, for example an electric motor for a drive wheel with an internal thread. The external thread of a spindle extends into the internal thread. By correspondingly rotating the wheel, an end of the spindle can be moved out of a housing of the actuating drive proceeding from a retracted state. Proceeding from the deployed state, the end of the spindle can be moved in the direction of the housing by correspondingly rotating the wheel in the opposite direction. Furthermore, in one embodiment, the actuating drive comprises an emergency unlocking device. 1. An actuator , comprisinga locking bar that can be retracted and extended by means of a spindle,an electric drive unit for retracting and extending the locking bar,a dust-tight and moisture-tight inner space in which the drive unit is located,with a manually actuatable emergency release device comprising a lever and an extension arm connected with the locking bar, anda guide channel for the lever disposed outside of the inner space,the lever comprising a bolt which can be partially pushed through a stationarily disposed sealing ring in order to then arrive in an inner space sealed in a dust-tight and moisture-tight manner,with a sealing ring, which is disposed in a groove and extends peripherally around the locking bar, for a tight connection between the actuator and the component connected to the actuator,the sealing ring being inserted into a peripherally extending groove of the housing of the actuator,with a dust-tight and moisture-tight housing,a single-walled wall portion of the housing being formed by a membrane consisting of a flexible ...

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Номер записи: 62
20-06-2013 дата публикации

SWITCHED RELUCTANCE MOTOR ASSEMBLY

Номер: US20130154406A1
Автор: Yun Tae Ho
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is a switched reluctance motor assembly including: a shaft becoming the rotation center of the motor; a rotor part rotatably coupled to the shaft; a first bearing part coupled to an upper portion of the rotor part in an axial direction; a stopper coupled to a lower portion of the rotor part in the axial direction; and a second bearing part coupled to a lower portion of the stopper in the axial direction. According to the present invention, a distance in the axial direction between the bearing parts formed at both sides based on the shaft of the switched reluctance motor is reduced, thereby making it possible to reduce vibration and noise generated at the time of driving of the motor. 1. A switched reluctance motor assembly comprising:a shaft becoming the rotation center of the motor;a rotor part rotatably coupled to the shaft;a first bearing part coupled to an upper portion of the rotor part in an axial direction;a stopper coupled to a lower portion of the rotor part in the axial direction; anda second bearing part coupled to a lower portion of the stopper in the axial direction.2. The switched reluctance motor assembly as set forth in claim 1 , further comprising:a front part formed at the upper portion of the first bearing part in the axial direction and supporting the first bearing part;a diffuser part coupled to an upper portion of the front part in the axial direction; andan impeller part coupled to an upper portion of the diffuser part in the axial direction and coupled to the shaft.3. The switched reluctance motor assembly as set forth in claim 1 , further comprising:a housing enclosing an outer side of the rotor part and formed to include the first and second bearing parts; anda cover member coupled to an upper portion of the housing in the axial direction.4. The switched reluctance motor assembly as set forth in claim 3 , further comprising a step part formed to be protruded along an outer peripheral surface of the housing to thereby allow ...

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Номер записи: 63
20-06-2013 дата публикации

Housing of a driving device

Номер: US20130154413A1
Автор: Andreas Schweichart, Peter Klingler
Принадлежит: Brose Fahrzeugteile SE and Co KG

A housing of a driving device, in particular an electric motor adjustment drive for a motor vehicle, has a housing opening, which is covered by a gas-permeable membrane, in particular a membrane that is impermeable to liquid. The housing opening is surrounded by a collar contour, which is interrupted locally at the circumference and within which the membrane lies.

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Номер записи: 64
20-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130154417A1
Автор: HAN Hoon Hee
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

There is provided a spindle motor, including: a shaft directly or indirectly fixed to a base; a rotor hub rotatably disposed via oil while maintaining a bearing gap from the shaft and including a communicating part in communication with the outside so that a fluid-air interface is formed between the rotor hub and the shaft; and a compensating part formed by allowing a predetermined area of the rotor hub to be depressed so as to compensate for mass unbalance of the rotor hub due to the communicating part. 1. A spindle motor , comprising:a shaft directly or indirectly fixed to a base;a rotor hub rotatably disposed via oil while maintaining a bearing gap from the shaft and including a communicating part in communication with the outside so that a fluid-air interface is formed between the rotor hub and the shaft; anda compensating part formed by allowing a predetermined area of the rotor hub to be depressed so as to compensate for mass unbalance of the rotor hub due to the communicating part.2. The spindle motor of claim 1 , wherein the compensating part is symmetrically formed with regard to the communicating part claim 1 , based on a rotational center of the rotor hub.3. The spindle motor of claim 1 , wherein the compensating part and the communicating part have the same volume.4. The spindle motor of claim 1 , further comprising an upper thrust part and a lower thrust part fixed to the shaft and allowing the fluid-air interface to be formed.5. The spindle motor of claim 4 , wherein the fluid-air interface formed in the upper thrust part is formed between the upper thrust part and a seal part coupled to the rotor hub.6. The spindle motor of claim 5 , wherein one surface of the seal part is inclined downwardly in an inner radial direction so as to form the fluid-air interface together with the upper thrust part.7. The spindle motor of claim 4 , wherein the compensating part is formed outwardly of at least one of the upper thrust part and the lower thrust part in a ...

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Номер записи: 65
20-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130154418A1
Автор: Song Sang Jae
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

There is provided a spindle motor, including: a hub rotated together with a shaft; a sleeve supporting rotation of the shaft via oil; and a stopper mounted on the hub to prevent the hub from overfloating with respect to the sleeve, wherein one of opposing surfaces of the stopper and the hub is provided with at least one press-fitting groove for press-fitting the stopper in the hub, and the other of the opposing surfaces of the stopper and the hub is provided with at least one press-fitting protrusion press-fitted to the press-fitting groove. 1. A spindle motor , comprising:a hub rotated together with a shaft;a sleeve supporting rotation of the shaft via oil; anda stopper mounted on the hub to prevent the hub from overfloating with respect to the sleeve,one of opposing surfaces of the stopper and the hub being provided with at least one press-fitting groove for press-fitting the stopper in the hub, and the other of the opposing surfaces of the stopper and the hub being provided with at least one press-fitting protrusion press-fitted to the press-fitting groove.2. The spindle motor of claim 1 , wherein the press-fitting groove is formed in the stopper claim 1 , andthe press-fitting protrusion is formed on the hub.3. The spindle motor of claim 1 , wherein the press-fitting groove is formed on an upper surface of the stopper claim 1 , andthe press-fitting protrusion is formed on one surface of the hub facing the upper surface of the stopper.4. The spindle motor of claim 1 , wherein the press-fitting groove and the press-fitting protrusion are seamlessly or spacedly formed in a circumferential direction.5. The spindle motor of claim 1 , wherein the press-fitting groove and the press-fitting protrusion are symmetrically formed claim 1 , based on a rotational center of the shaft.6. The spindle motor of claim 1 , wherein the hub is provided with a wall part protruded axially downwardly from an outer surface of the sleeve claim 1 , andthe stopper is mounted on the wall part. ...

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Номер записи: 66
20-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130154420A1
Автор: JANG Gun Hee, JUNG Kyung Mun, Kim Han Byul, KIM Ju Ho, Lee Hong Joo
Принадлежит:

There is provided a spindle motor, including: a hub rotating together with a shaft; a sleeve supporting rotation of the shaft via oil; and a pumping part formed in at least one of the sleeve and the hub to pump the oil leaked outside of an interface of the oil in a normal state in a direction toward the interface of the oil in the normal state, wherein a portion of the pumping part may contact the oil in the normal state and the remainder of the pumping part does not contact the oil in the normal state. 1. A spindle motor , comprising:a hub rotating together with a shaft;a sleeve supporting rotation of the shaft via oil; anda pumping part formed in at least one of the sleeve and the hub to pump the oil leaked outside of an interface of the oil in a normal state in a direction toward the interface of the oil in the normal state,wherein a portion of the pumping part contacts the oil in the normal state and the remainder of the pumping part does not contact the oil in the normal state.2. A spindle motor , comprising:a hub rotating together with a shaft;a sleeve supporting rotation of the shaft via oil; anda pumping part formed in at least one of the sleeve and the hub to pump the oil leaked outside of an interface of the oil in a normal state in a direction toward the interface of the oil in the normal state,wherein the pumping part does not contact the oil in the normal state.3. The spindle motor of claim 1 , wherein the portion of the pumping part that contacts the oil in the normal state is formed to be smaller than the remainder of the pumping part that does not contact the oil.4. The spindle motor of claim 1 , wherein the interface of the oil in the normal state is formed between an upper surface of the sleeve and the hub claim 1 , andthe pumping part is formed in at least one of the upper surface of the sleeve and an outer circumferential surface thereof adjacent thereto and surfaces of the hub facing the upper surface and the outer circumferential surface of the ...

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Номер записи: 67
27-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130162065A1
Автор: Cho Kyu Hong
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclose herein is a spindle motor, including: a shaft including a top thrust plate disposed at a top portion thereof and a bottom thrust plate disposed at a bottom portion thereof; a sleeve formed in a hollow cylindrical shape so as to be rotatably supported by the shaft and including a ring shaped convex part formed along an outer peripheral surface thereof; a base including a cylindrical support part formed at the center thereof and supporting the sleeve using a hollow part formed at the center of the support part; and a hub having a cylindrical part fixed to an upper end portion of the sleeve, a disk part extended from the cylindrical part in an outward direction, and a skirt part extended from an edge of the disk part in a vertical downward direction. 1. A spindle motor for preventing leakage of oil through a labyrinth sealing , comprising:a shaft including a top thrust plate disposed at a top portion thereof and a bottom thrust plate disposed at a bottom portion thereof;a sleeve formed in a hollow cylindrical shape so as to be rotatably supported by the shaft;a hub having a cylindrical part extended downwardly so as to be fixed to an upper end portion of the sleeve, a disk part extended from the cylindrical part in an outward direction, and a skirt part extended from an edge of the disk part in a vertical downward direction; anda base including a cylindrical support part formed at the center thereof and extended to be overlapped with the cylindrical part of the hub, having a fine interval therebetween, and supporting the sleeve using a hollow part formed at the center of the support part.2. The spindle motor as set forth in claim 1 , wherein the sleeve includes a ring shaped convex part formed along an outer peripheral surface thereof.3. The spindle motor as set forth in claim 2 , wherein an edge of the convex part and an outer peripheral surface of the cylindrical part have the same level.4. The spindle motor as set forth in claim 2 , wherein the support part ...

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Номер записи: 68
27-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130162077A1
Автор: PARK Dong Jin
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is a spindle motor including a shaft; a sleeve having a hollow cylindrical shape so as to rotatably support the shaft; and a cover closing an opened lower portion of the sleeve. This spindle motor is characterized in that the cover and a lower portion of the sleeve are arranged in parallel with each other and adhered to each other by a horizontal butt welding method. 1. A spindle motor comprising:a shaft;a sleeve having a hollow cylindrical shape so as to rotatably support the shaft; anda cover arranged in parallel with a lower portion of the sleeve to close an opened lower portion of the sleeve;wherein a junction of an outer peripheral surface of the cover and an outer peripheral surface of the sleeve is fixed by a horizontal butt welding method.2. The spindle motor as set forth in claim 1 , wherein an edge of the cover has the same shape as that of the outer peripheral surface of the lower portion of the sleeve.3. The spindle motor as set forth in claim 1 , wherein in the horizontal butt welding method claim 1 , a ring shaped welding part is formed along the junction of the sleeve and the cover arranged in an axial direction.4. The spindle motor as set forth in claim 1 , wherein the cover is provided with a flat surface and a wing part bent near an outer peripheral surface of the flat surface. This application claims the benefit of Korean Patent Application No. 10-2011-0142663, filed on Dec. 26, 2011, entitled “Spindle Motor”, which is hereby incorporated by reference in its entirety into this application.1. Technical FieldThe present invention relates to a spindle motor.2. Description of the Related ArtGenerally, a spindle motor is mounted in a device requiring high-speed rotation such as a hard disk drive (HDD), an optical disk drive (ODD), and the like, to rotate a disk of the HDD in which information is recorded and stored.That is, the spindle motor is a device rotating the disk so as to make it possible to read data recorded in the disk by ...

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Номер записи: 69
27-06-2013 дата публикации

Spindle motor

Номер: US20130162079A1
Автор: Yeol Choi, Young Sun Yoo, Yun Yeong Park
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor. In the spindle motor according to the present invention, a thrust part is disposed at a lower portion of a shaft, and a support part surface-contacting a lower end of the shaft is formed at the thrust part so as to have a round shape, thereby making it possible to easily prevent a wobble phenomenon of a rotor due to a gap in a shaft system. In addition, a guide part is formed to be protruded at the thrust part to lock the shaft including a narrow part formed therein, thereby making it possible to easily prevent floating of the rotor.

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Номер записи: 70
27-06-2013 дата публикации

Hydrodynamic bearing assembly and spindle motor including the same

Номер: US20130162080A1
Автор: Chang Jo Yu
Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve supporting a shaft and forming a bearing clearance filled with a lubricating fluid; a housing enclosing an outer peripheral surface of the sleeve and including a flange part formed in an upper end portion thereof and extended outwardly; a rotor hub coupled to an upper end portion of the shaft and including an extension wall part extended to be disposed outwardly of the housing; a stopper member fixed to the extension wall part while being disposed under the flange part of the housing, and forming, together with an outer peripheral surface of the housing, a space in which a liquid-vapor interface is formed; and a cover member coupled to a lower end portion of the housing. The sleeve and the housing include first and second circulation holes formed therebetween.

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Номер записи: 71
27-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130162082A1
Автор: KIM Ju Ho
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

There is provided a spindle motor including: a sleeve forming a dynamic pressure generation space with a shaft; a hub including a main wall portion surrounding a circumference of the sleeve; and a cover disposed between the sleeve and the hub, wherein the sleeve and the cover have a storage unit formed therebetween, the storage unit storing a lubricating fluid. 1. A spindle motor comprising:a sleeve forming a dynamic pressure generation space with a shaft;a hub including a main wall portion surrounding a circumference of the sleeve; anda cover disposed between the sleeve and the hub,wherein the sleeve and the cover have a storage unit formed therebetween, the storage unit storing a lubricating fluid.2. The spindle motor of claim 1 , wherein the sleeve includes a flow channel allowing the lubricating fluid to circulate therethrough.3. The spindle motor of claim 2 , wherein the cover has a recess connecting the flow channel and the dynamic pressure generation space.4. The spindle motor of claim 1 , wherein the storage unit is formed in the cover.5. The spindle motor of claim 1 , wherein the storage unit is formed in the sleeve.6. The spindle motor of claim 1 , wherein the cover and the hub has a flow space formed therebetween to allow the lubricating fluid to move therein.7. The spindle motor of claim 6 , wherein the cover has a dynamic pressure groove formed in a surface thereof facing the hub.8. The spindle motor of claim 1 , wherein the cover is formed of a porous material. This application claims the priority of Korean Patent Application No. 10-2011-0140128 filed on Dec. 22, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.1. Field of the InventionThe present invention relates to a spindle motor and, more particularly, to a spindle motor able to minimize shortage of a lubricating fluid.2. Description of the Related ArtA hard disk drive (HDD) includes a disk driving device, e.g., a small spindle motor, ...

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Номер записи: 72
27-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130162111A1
Автор: Kim Yong Sik
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is a spindle motor, including: a shaft forming the center of rotation of a rotor; a sleeve receiving the shaft therein and rotatably supporting the shaft; a base coupled to an outer side surface of the sleeve so as to support the sleeve; and a conductive adhesive applied to a coupled surface between the sleeve and the base. According to the present invention, the conductive adhesive is used at the time of adhering between the sleeve and the base of the spindle motor, thereby making it possible to discharge excessive electric charges generated at the time of driving the spindle motor to the outside through the base. 1. A spindle motor comprising:a shaft forming the center of rotation of a rotor;a sleeve receiving the shaft therein and rotatably supporting the shaft;a base coupled to an outer side surface of the sleeve so as to support the sleeve; anda conductive adhesive applied to a coupled surface between the sleeve and the base.2. The spindle motor as set forth in claim 1 , wherein the conductive adhesive is an anisotropic conductive film (ACF) applied in a solution state.3. The spindle motor as set forth in claim 2 , wherein the ACF is applied to the coupled surface between the sleeve and the base to bond therebetween by a thermo-compression method.4. The spindle motor as set forth in claim 3 , wherein the thermo-compression method is performed in a range of 250 to 300° C.5. The spindle motor as set forth in claim 2 , wherein the ACF is applied to the coupled surface between the sleeve and the base and has a vertical ultrasonic wave applied thereto claim 2 , such that heat is spontaneously generated claim 2 , thereby bonding between the sleeve and the base.6. The spindle motor as set forth in claim 2 , wherein the ACF in the solution state is applied to a bonded surface of the sleeve or the base in a dispensing or spray scheme. This application claims the benefit of Korean Patent Application No. 10-2011-0140918, filed on Dec. 23, 2011, entitled “ ...

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Номер записи: 73
04-07-2013 дата публикации

MOTOR

Номер: US20130169090A1
Автор: KUSUNOKI Tokuro
Принадлежит:

A brush motor includes a case, a rotor containing a wiring portion wound around an iron core fixed to a shaft, a bearing making a sliding contact with the shaft to support the shaft, and a holder holding the bearing. The holder is made of resin, and includes a central portion with a cylindrical shape, containing an inner circumferential side into which the bearing is inserted, and a top portion protruding from an opening formed in the case; and an outer circumferential portion shielding the inner surface side of the exterior case and the winding portion. Thereby, the reliability of the motor can be improved. 1. A motor comprising an exterior case , a rotor including a wiring portion wound around an iron core fixed to a rotating shaft , a bearing in a sliding contact with the rotating shaft to support the rotating shaft , and a bearing holder made of resin and arranged at one side of the rotating shaft and holding the bearing , whereinthe bearing holder comprises a central portion with a cylindrical shape, including a top portion protruding from an opening formed in the exterior case, and an inner circumferential side into which the bearing is inserted; and an outer circumferential portion shielding an inner surface side of the exterior case and the winding portion.2. The motor as claimed in claim 1 , wherein a plurality of oil sump portions are provided on the inner circumferential side of the central portion of the bearing holder.3. The motor as claimed in claim 1 , wherein a positioning projection is provided on either one of the outer circumferential portion of the bearing holder and the exterior case claim 1 , the positioning projection being fit with a hole formed on another one of the outer circumferential portion of the bearing holder and the exterior case so as to perform a positioning of the bearing holder with respect to the exterior case.4. The motor as claimed in claim 1 , wherein a plurality of projecting abutting portions abutting against the inner ...

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Номер записи: 74
04-07-2013 дата публикации

BEARING HOLDER

Номер: US20130169092A1
Автор: NEUHAUS Bruno, Watzek Michael
Принадлежит: JOHNSON ELECTRIC S.A.

A bearing holder for fixing a bearing to a support structure such as a casing of a gearbox uses a single plate-like body. The body has a through hole, a plurality of hooks extending from a first side of the body and defining a first axial step limiting the axial movement of the bearing through the hole, and a plurality of projections extending from a second side of the body and arranged to be radially deformed to define a second axial step limiting the axial movement of the bearing through the hole in a second axial direction. Centering lips extending inwardly from the edge of the hole may be provided to fix the lateral position of the bearing. 1. A bearing holder for fixing a bearing , comprising:a plate-like body having a first side, a second side;a hole passing through the body, defining axial and radial directions and a void for receiving the bearing;a plurality of hooks extending from the first side of the body and defining a first axial step limiting the axial movement of the bearing through the void in a first axial direction, anda plurality of projections extending from the second side of the body and arranged to be radially deformed to define a second axial step limiting the axial movement of the bearing through the void in a second axial direction.2. The bearing holder of claim 1 , further comprising a plurality of centering lips configured to bear against a lateral side of the bearing for precise radial positioning of the bearing.3. The bearing holder of claim 2 , wherein the centering lips extend radially inwardly from the edge of the hole.4. The bearing holder of claim 1 , wherein the projections are U-shaped projections and the base of the U is arranged to bear against an axial end face of the bearing after being radially deformed.5. The bearing holder of claim 4 , wherein the base of each U-shaped projection is formed with a finger extending substantially radially inwardly claim 4 , the fingers being arranged to accommodate the bearing before the ...

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Номер записи: 75
11-07-2013 дата публикации

Switched reluctance motor

Номер: US20130175904A1
Автор: Chang Hwan Park, Han Kyung Bae, Hee Soo Yoon, Jin Su Seok, Sang Jong Lee, Su Bong Jang, Tae Ho Yun
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a switched reluctance motor including: a stator; a rotor rotating based on a motor shaft with respect to the stator; a housing having a cup shape and receiving the stator and the rotor therein and including a receiving groove at a central portion of a lower surface thereof; a sensor part including a disk coupled to a predetermined position of a lower portion of the motor shaft extended up to the receiving groove and a sensor detecting a rotational state of the disk, and mounted on the outside of the housing; and filter shielding the sensor part.

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Номер записи: 76
18-07-2013 дата публикации

Rotary electric machine, bearing attaching and detaching jig, and bearing replacement method

Номер: US20130181559A1
Автор: Kenta Kaneko
Принадлежит: Mitsubishi Electric Corp

To provide a rotary electric machine including a stator iron core, a rotor including a lamination core that is arranged within the stator iron core and is constituted by laminating electromagnetic steel plates and iron core holders that cover both ends of the lamination core, a frame including a cylindrical portion that encloses the stator iron core and the rotor and a rotor-shaft supporting unit that extends in the direction of a rotor shaft and supports the rotor shaft, and cartridges that are detachably attached to the rotor-shaft supporting unit and rotatably support the rotor shaft, in which on the iron core holder and the iron core holder, recessed portions are circumferentially provided, into which end portions of jigs that are inserted through the rotor-shaft supporting unit to enable the cartridges to be detached and attached are fitted.

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Номер записи: 77
25-07-2013 дата публикации

Electric motor with a power output stage and with efficient heat transport and method

Номер: US20130187490A1
Автор: Alexander Fink, Frank Wehrmann, Georg Voegele, Gerhard Braun, Hans Irion, Johannes Hirschle, Michael Heim, Sigmund Braun, Thomas Hennecke
Принадлежит: ROBERT BOSCH GMBH

The invention relates to an electric motor, in particular an electronically commutated electric motor. The electric motor has a stator, a rotor and a housing, which accommodates at least the stator and the rotor in a cavity. The electric motor also has a power output stage, which is connected to the stator and is designed to energize the stator in order to induce a rotating magnetic field. The power output stage has at least one power semiconductor with a thermal contact area, wherein the thermal contact area is thermally conductively connected to the housing, with the result that heat generated in the power semiconductor can be dissipated to the housing. According to the invention, the housing has a housing cup, which at least partially surrounds the cavity and is preferably thermally conductive and which has a cup wall, wherein the cup wall has a mating contact area corresponding to the thermal contact area.

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Номер записи: 78
25-07-2013 дата публикации

MOTOR

Номер: US20130187498A1
Автор: Watanabe Yuji
Принадлежит: NIDEC CORPORATION

A motor includes a bearing holder having a substantially cylindrical shape and a surrounding member fixed to a radial outer surface of the bearing holder. The bearing holder includes a plurality of holder protrusion portions each including a radial outer surface at least partially making contact with the surrounding member and a plurality of holder recess portions positioned radially inward of the plurality of holder protrusion portions. The plurality of holder protrusion portions and the plurality of holder recess portions are alternately arranged along a circumferential direction. A central angle of a portion of an inner circumferential surface of the surrounding member remaining out of contact with each of the plurality of holder protrusion portions is equal to or larger than a central angle of a portion of an outer circumferential surface of a bearing unit. 1. A motor , comprising:a bearing holder having a substantially cylindrical shape axially extending along a vertically-extending center axis;a bearing unit fixed to a radial inner surface of the bearing holder;a surrounding member fixed to a radial outer surface of the bearing holder, the surrounding member including an insertion hole through which the bearing holder extends;a shaft rotatably supported by the bearing unit; anda magnet rotating together with the shaft; whereinthe bearing holder includes a plurality of holder protrusion portions each including a radial outer surface at least partially making contact with the surrounding member and a plurality of holder recess portions positioned radially inward of the plurality of holder protrusion portions, each of the plurality of holder recess portions including a radial inner surface at least partially making contact with the bearing unit;the plurality of holder protrusion portions and the plurality of holder recess portions are alternately arranged along a circumferential direction;a central angle of a portion of an inner circumferential surface of the ...

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Номер записи: 79
25-07-2013 дата публикации

MOTOR

Номер: US20130187499A1
Автор: NAGATA Masamichi, Watanabe Yuji
Принадлежит: NIDEC CORPORATION

A motor includes a bearing holder and an attachment plate fixed to a radial outer surface of the bearing holder. The attachment plate includes a flat portion including a circular hole and a burring portion axially protruding from the circular hole. The bearing holder includes holder protrusion portions each including a radial outer surface at least partially making contact with the burring portion and holder recess portions and the holder protrusion portions and the holder recess portions are alternately arranged along a circumferential direction. The burring portion includes a plurality of caulking sections extending radially outward to make contact with the circuit board and the plurality of caulking sections are arranged radially outward of the holder recess portions. 1. A motor , comprising:a bearing holder having a substantially cylindrical shape axially extending along a vertically-extending center axis;a bearing unit fixed to a radial inner surface of the bearing holder;an attachment plate fixed to a radial outer surface of the bearing holder and extending in a direction perpendicular or substantially perpendicular to the center axis;a circuit board arranged on an upper surface or a lower surface of the attachment plate;a stator core arranged above the attachment plate and fixed to the radial outer surface of the bearing holder;a coil attached to the stator core;a shaft rotatably supported by the bearing unit; anda magnet rotating together with the shaft; whereinthe attachment plate includes a flat portion including a circular hole arranged in a coaxial relationship with the center axis and a burring portion axially protruding from the circular hole;the bearing holder includes a plurality of holder protrusion portions each including a radial outer surface at least partially making contact with the burring portion and a plurality of holder recess portions positioned more radially inward than the plurality of holder protrusion portions, each of the plurality of ...

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Номер записи: 80
25-07-2013 дата публикации

Vibration motor

Номер: US20130187502A1
Автор: Yong Jin Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a vibration motor including: a housing having one open surface; a permanent magnet disposed in an internal space of the housing and interacting with a coil to generate electromagnetic force; an elastic member formed in the housing; a mass member coupled to the elastic member to perform resonant movement through the electromagnetic force; a cover covering the one open surface of the housing; and an extension part extended from the one open surface of the housing in a height direction thereof and compressed with the cover to closely attach the housing and the cover to each other.

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Номер записи: 81
01-08-2013 дата публикации

Monitoring fiber for a machine and method of installation

Номер: US20130192821A1
Автор: Carl W. Stoesz
Принадлежит: Baker Hughes Inc

An electric machine assembly and a method of installing an electric machine assembly, the electric machine including a downhole electric machine; and a fiber operatively arranged at least partially through a housing of the electric machine for sensing at least one parameter of the electric machine assembly.

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Номер записи: 82
01-08-2013 дата публикации

MOTOR AND VIBRATION REDUCTION SYSTEM FOR A MOTOR

Номер: US20130193784A1
Автор: Zheng Nengan
Принадлежит: Regal Beloit America, Inc.

A motor includes a rotor supported for rotation about a longitudinal axis, a stator including a magnetic core, a first end plate positioned at a first end of the magnetic core, and a second end plate positioned at a second end of the magnetic core. The magnetic core, first end plate, and second end plate cooperate to define a central opening. The motor also includes a plurality of rods each fixedly attached to the first end plate and the second end plate and including a first end that extends along the longitudinal axis beyond the first end plate and a second end that extends along the longitudinal axis beyond the second end plate. A first support disk is coupled to the first end of each of the rods and a second support disk is coupled to the second end of each of the rods. 1. A motor comprising:a rotor supported for rotation about a longitudinal axis;a stator including a magnetic core;a first end plate positioned at a first end of the magnetic core;a second end plate positioned at a second end of the magnetic core, the magnetic core, the first end plate, and the second end plate cooperating to define a central opening, at least a portion of the rotor disposed within the central opening;a plurality of rods, each rod fixedly attached to the first end plate and the second end plate and including a first end that extends parallel to the longitudinal axis beyond the first end plate in a direction away from the magnetic core and a second end that extends parallel to the longitudinal axis beyond the second end plate in a direction away from the magnetic core;a first support disk coupled to the first end of each of the plurality of rods such that the first support disk is spaced apart from the first end plate; anda second support disk coupled to the second end of each of the plurality of rods such that the second support disk is spaced apart from the second end plate.2. The motor of claim 1 , wherein the magnetic core includes a plurality of laminations stacked along the ...

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Номер записи: 83
01-08-2013 дата публикации

ELECTRIC MOTOR

Номер: US20130193789A1
Автор: KOKUBU Hiroshi
Принадлежит: ASMO CO., LTD.

A brush holder is placed between a yoke housing and a gear housing and includes a holder member and a base member. The holder member is installed to an opening of the yoke housing and holds a plurality of brushes. The base member is installed to the holder member and includes a connector configured to connect with an external connector to receive an electric power. An output side end part of the yoke housing has a flange portion, through which the gear housing is fixed to the yoke housing. The holder member includes a contact portion that contacts an opening end portion of the yoke housing in an axial direction of a rotatable shaft. The contact portion is axially spaced from the base member by an axial gap. 1. An electric motor comprising:a yoke housing;a gear housing that is formed separately from the yoke housing and is fixed to the yoke housing; and a holder member that is installed to an opening of the yoke housing and holds a plurality of brushes; and', 'a base member that is formed separately from the holder member and is installed to the holder member, wherein:, 'a brush holder that is placed between the yoke housing and the gear housing and includesthe base member includes a connector configured to connect with an external connector to receive an electric power;an output side end part of the yoke housing has a flange portion, through which the gear housing is fixed to the yoke housing;the holder member includes a contact portion that contacts an opening end portion of the yoke housing in an axial direction of a rotatable shaft, which is rotatably received in the yoke housing; andthe contact portion is axially spaced from the base member by an axial gap.2. The electric motor according to claim 1 , wherein the base member is displaceable relative to the holder member in the axial direction.3. The electric motor according to claim 1 , further comprising an elastic member claim 1 , which is placed in a compressed state between the holder member and the base ...

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Номер записи: 84
01-08-2013 дата публикации

SPINDLE MOTOR

Номер: US20130193792A1
Автор: KIM Ju Ho
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

There is provided a spindle motor capable of reducing generation of negative pressure. The spindle motor includes: a sleeve fixedly installed on a base member; a shaft rotatably supported by the sleeve; a rotor hub fixedly installed on an upper end portion of the shaft to rotate together therewith; and a thrust plate fixedly coupled to the sleeve so as to be disposed to face a lower surface of the rotor hub and having a ring shape, wherein the thrust plate includes a channel part formed therein in order to reduce a difference in pressure between a bearing clearance on an inner side thereof and a bearing clearance on an outer side thereof. 1. A spindle motor comprising:a sleeve fixedly installed on a base member;a shaft rotatably supported by the sleeve;a rotor hub fixedly installed on an upper end portion of the shaft to rotate together therewith; anda thrust plate fixedly coupled to the sleeve so as to be disposed to face a lower surface of the rotor hub and having a ring shape,the thrust plate including a channel part formed therein in order to reduce a difference in pressure between a bearing clearance on an inner side thereof and a bearing clearance on an outer side thereof.2. The spindle motor of claim 1 , wherein the channel part is configured of grooves formed in a lower surface of the thrust plate and an inner peripheral surface thereof.3. The spindle motor of claim 1 , wherein the thrust plate is formed by a sintering process in order to reduce abrasion.4. The spindle motor of claim 1 , wherein the sleeve includes a circulation hole formed therein in order to connect a bearing clearance at a lower end portion of the sleeve and a bearing clearance at an upper end portion of the sleeve to each other.5. The spindle motor of claim 1 , wherein at least one of an upper surface of the thrust plate and the lower surface of the rotor hub is provided with a thrust dynamic pressure groove.6. The spindle motor of claim 1 , wherein at least one of an inner surface of ...

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Номер записи: 85
01-08-2013 дата публикации

Motor and disk drive apparatus

Номер: US20130194701A1
Автор: Kazuhiko Fukushima
Принадлежит: Nidec Corp

A spindle motor, which is for use in a disk drive apparatus which includes a housing including a base member and a cover member, includes a stationary portion and a rotating portion. The stationary portion includes a stationary shaft and the base member. The rotating portion includes a sleeve portion. The stationary shaft is inserted into the bearing hole. The stationary shaft includes an annular surface arranged to come into direct or indirect contact with the cover member, the annular surface being located higher than the sleeve portion and extending in a circumferential direction, and an upper protrusion arranged to be fixed to a cover inner circumferential surface defining a cover penetrating hole of the cover member, the upper protrusion protruding upward from the radial inner side of the annular surface. The base member includes a fixing portion arranged to directly or indirectly fix the cover member.

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Номер записи: 86
08-08-2013 дата публикации

POWER TOOL

Номер: US20130200733A1
Автор: LAU James Ching-Sik
Принадлежит: JOHNSON ELECTRIC S.A.

A power tool includes a casing with an inlet and an outlet extending in a radial direction of the casing, a motor installed within the casing between the inlet and the outlet. The motor includes a stator and a rotor with a shaft, an air passage being formed between a radially outer surface of the stator and an inner surface of the casing. The air passage extends in the axial direction of the casing. A heat dissipation device is arranged on the radially outer surface of the stator for absorbing heat from the stator, and is disposed in the air passage. A fan is fixed to the shaft of the rotor. Air flow generated by the fan enters the casing via the inlet and exits the casing via the outlet after passing through the air passage and the heat dissipation device, 1. A power tool comprising:a casing with an inlet and an outlet extending in a radial direction of the casing;a motor installed within the casing between the inlet and the outlet, the motor comprising a stator and a rotor with a shaft, an air passage being formed between a radially outer surface of the stator and an inner surface of the casing, the air passage extending in a direction parallel to an axial direction of the casing;a heat dissipation device being arranged on the radially outer surface of the stator for absorbing heat from the stator, the heat dissipation device being disposed in the air passage; anda fan attached to the shaft of the rotor,wherein air flow generated by the fan enters the casing via the inlet and exits the casing via the outlet after passing through the air passage and heat dissipation device.2. The power tool of claim 1 , wherein the fan is a centrifugal fan that is located at one end of the motor with a radially outer side of the fan facing the outlet.3. The power tool of claim 2 , wherein the fan extends radially beyond the radially outer surface of the stator.4. The power tool of claim 1 , wherein the heat dissipation device comprises a plurality of fins that extend in a direction ...

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Номер записи: 87
22-08-2013 дата публикации

Motor Structure

Номер: US20130214622A1
Автор: Horng Alex, Shan Duo-Nian
Принадлежит: SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD.

A motor structure includes a housing having a shaft tube receiving a shaft retaining assembly. The shaft tube includes a positioning member on an outer periphery thereof. A rotor includes a shaft rotatably extending through the bearing. A stator is mounted around the shaft tube, couples with the positioning member, and includes a bobbin having an abutting portion pressing a top face of the shaft retaining assembly by a free end thereof. Specifically, the positioning member is distant from the top face by a first distance in an axial direction of the shaft tube, the abutting portion is made of elastic material, the positioning member is distant from the free end by a second distance in an axial direction of the assembling hole is defined, and the second distance is smaller than the first distance when the stator is separate from the shaft tube. 1. A motor structure comprising:a housing including a shaft tube having an upper opening, with a shaft retaining assembly being received in the shaft tube and having a top face adjacent to the upper opening, with the shaft tube including a positioning member on an outer periphery thereof, with the positioning member distant from the top face by a first distance in an axial direction of the shaft tube;a rotor including a shaft rotatably extending through the bearing; anda stator including an assembling hole receiving the outer periphery of the shaft tube, with the stator including a bobbin, a plurality of silicon steel plates coupled with the bobbin, and a winding wound around the plurality of silicon steel plates, with the stator coupling with the positioning member of the shaft tube, with the bobbin including an abutting portion pressing the top face of the shaft retaining assembly by a free end thereof;wherein the abutting portion is made of elastic material, a second distance between the positioning member and the free end in an axial direction of the assembling hole is defined, and the second distance is smaller than the ...

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Номер записи: 88
29-08-2013 дата публикации

Permanent Magnet Pump Motor

Номер: US20130221780A1
Автор: Atsushi Fukunaga, Daisuke Kori, Motonobu Iizuka
Принадлежит: HITACHI LTD

In a permanent magnet pump motor comprising a stator and a rotor, a permanent magnet is used for the rotor; and the rotor has a shaft end portion to be mounted with a joint shaft for rotor insertion and bearing brackets for housing therein bearings for supporting the both ends of the rotor. The bearing brackets have cavities through which a rotor shaft and the joint shaft can pass.

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Номер записи: 89
29-08-2013 дата публикации

Bearing assembly and motor including the same

Номер: US20130221782A1
Автор: Kyung Seob Shin, Young Sun Yoo, Yun Yeong Park
Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a bearing assembly and a motor including the same capable of securing shaft system reliability while maintaining motor slimness. The bearing assembly includes a sleeve supporting a shaft via oil; and a sleeve holder having the sleeve inserted thereinto and fixedly supporting the sleeve, wherein an upper end of the sleeve is protruded from the sleeve holder to be higher than an upper end of the sleeve holder in an upward axial direction.

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Номер записи: 90
29-08-2013 дата публикации

Outer rotor-type brushless motor

Номер: US20130221783A1
Автор: Fumihiro Okamura
Принадлежит: Shinano Kenshi Co Ltd

The outer rotor-type blushless motor comprises: a stator including a cylindrical housing, a stator core having stator pole teeth and a bearing coaxially incorporated in a cylindrical hole of the hosing; and a rotor including a rotor yoke, a rotor hub provided to the rotor yoke and a rotor shaft rotatably supported by the bearing. A first resin washer, through which the rotor shaft is pierced and which contacts an end face of the rotor hub, and a second resin washer, which contacts an end face of the bearing incorporated in a center hole of the stator core, contact each other. The second resin washer has an elastic projected section fitted in a concave section formed in the center hole of the stator core.

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Номер записи: 91
29-08-2013 дата публикации

STEPPING MOTOR

Номер: US20130221795A1
Автор: Hata Masato
Принадлежит: MINEBEA MOTOR MANUFACTURING CORPORATION

A stepping motor comprises: a first plate having plural band connection portions; a second plate mounting a band portion; a stator; and a structure that the stator is held by the first plate and the second plate from a front side and a back side of axial direction, wherein the plural band connection portions are positioned at a side surface of the stator and extend toward the second plate, and each of the plural band connection portions has an engagement portion at an outside thereof, the band portion has plural arms extending toward the first plate and engaging with the engagement portion of each of the plural band connection portions, and the band portion is connected to the first plate by engaging the arm portions with the engagement portions in a condition that the band portion holds the second plate and the stator. 1. A stepping motor comprising:a first plate having plural band connection portions;a second plate mounting a band portion;a stator; anda structure that the stator is held by the first plate and the second plate from a front side and a back side of axial direction, whereinthe plural band connection portions are positioned at a side surface of the stator and extend toward the second plate, and each of the plural band connection portions has an engagement portion at an outside thereof,the band portion has plural arms extending toward the first plate and engaging with the engagement portion of each of the plural band connection portions, andthe band portion is connected to the first plate by engaging the arm portions with the engagement portions in a condition that the band portion holds the second plate and the stator.2. A stepping motor according to claim 1 , whereinpositioning of the stator and the first plate and positioning of the stator and the second plate are performed by fitting a projection into a recess.3. A stepping motor according to claim 1 , whereinpositioning of the second plate and the band portion is performed by fitting a projection ...

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Номер записи: 92
05-09-2013 дата публикации

ELECTRIC MOTOR

Номер: US20130229071A1
Автор: HOU Yang Qing, Lau James Ching Sik, LI Yu Ying, Yang Xiao Jun, YUEN Cheong Wing
Принадлежит: JOHNSON ELECTRIC S.A.

An electric motor has a stator, a shaft and a rotor. The stator has an annular yoke portion; a plurality of stator teeth inwardly extending from the yoke portion; stator windings wound on the stator teeth; and a molded member made of heat conductive plastic material. The molded member has a plurality of fins arranged on an outer wall of the yoke portion, a covering portion disposed in the spaces between adjacent stator teeth, and two connecting portions respectively located at axially outer end faces of the yoke portion and connected to the covering portion and the fins. The covering portion covers an inner wall of the yoke portion and the stator windings, and connects to the fins via the connecting portions. Heat generated by the stator windings is transmitted to the fins via the covering portion and the connecting portions, where it is dissipated. 1. A motor , comprising a stator , a shaft , and a rotor received in the stator ,the stator comprising:an annular yoke portion;a plurality of stator teeth inwardly extending from the yoke portion;stator windings wound on the stator teeth; anda molded member made of heat conductive plastic material, the molded member comprising:a plurality of fins arranged on an outer wall of the yoke portion,a covering portion disposed in spaces between adjacent stator teeth and covering the stator windings, andtwo connecting portions respectively located at two axial end faces of the yoke portion and connected to the covering portion and the fins.2. The motor of claim 1 , wherein each connecting portion is ring shaped and completely covers the corresponding end face.3. The motor of claim 1 , wherein a plurality of axially extending recesses is formed on a radially outer wall of the yoke portion; andeach fin is axially arranged on the radially outer wall of the yoke portion and a radially inner portion of each fin is received in a corresponding said recess.4. The motor of claim 1 , wherein each fin extends in the axial direction of the ...

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Номер записи: 93
05-09-2013 дата публикации

Miniature Motor and Bearing Arrangement

Номер: US20130229076A1
Автор: BOCCADAMO Dario, Friebe Joachim
Принадлежит: MultiElectric GmbH & Co. KG

Electric miniature motor, comprises bearings; stationary assemblies having end faces; and metallic configurations for seating the bearings are formed at the end faces. At least one of the bearings is a roller bearing wherein the outer diameter of the roller bearing is smaller than the inner diameter of the corresponding configuration for seating the bearing; and the roller bearing is connected by at least one welded joint to the configuration. 1. Electric miniature motor , comprising:a) bearings;b) stationary assemblies having end faces;c) metallic configurations for seating the bearings are formed at the end faces;d) at least one of the bearings is a roller bearing wherein the outer diameter of the roller bearing is smaller than the inner diameter of the corresponding configuration for seating the bearing; ande) the roller bearing is connected by at least one welded joint to the configuration.2. Electric miniature motor according to claim 1 , wherein the welding occurs radially through the configuration with the outer ring of the roller bearing.3. Electric miniature motor according to claim 2 , wherein the welded joint is formed point-like claim 2 , as an axial corrugation or as a corrugation at the circumference of the configuration.4. Electric miniature motor according to claim 1 , wherein the welding between the roller bearing and the configuration occurs at the contact edge between both components.5. Electric miniature motor according to claim 4 , wherein the welded joint is formed point-like or as a corrugation between the roller bearing and the configuration.6. Electric miniature motor according to claim 1 , wherein the welding between the roller bearing and the configuration occurs at several positions.7. Bearing arrangement for an electric miniature motor claim 1 , comprising:a) a metallic configuration for seating a roller bearing at an end face of the stationary assemblies of the miniature motor;b) a roller bearing having an outer diameter which is less ...

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Номер записи: 94
12-09-2013 дата публикации

COOLING ARRANGEMENT FOR END TURNS AND STATOR IN AN ELECTRIC MACHINE

Номер: US20130234545A1
Автор: Pal Debabrata
Принадлежит: HAMILTON SUNDSTRAND CORPORATION

An electric machine includes a stator having an outer circumference. Spaced apart first walls are arranged about the outer circumference and provide generally parallel first channels. A second wall adjoins the first wall and is arranged about the outer circumference providing a second channel in fluid communication with the first channels, thus, providing a tortuous fluid flow path about the circumference. The first and second channels have an inner surface. A structure is provided within at least one of the first and second channels. The structure has an outer surface spaced radially outward from the inner surface and at least partially defines the tortuous flow path between the outer and inner surfaces. The stator includes an end turn. An end cap extends axially and radially outward from the stator and provides an enclosure about the end turn in fluid communication with the exit associated with the flow path. 1. An electric machine comprising:a stator having an outer circumference;spaced apart first walls arranged about the outer circumference providing generally parallel axially extending first channels, and a second wall adjoining the first walls and arranged about the outer circumference providing discrete, arcuate second channels in fluid communication with the first channels and providing a tortuous serpentine fluid flow path about the circumference that is configured to alternate between opposite axial fluid flow directions within the first channels, the first and second channels having an inner surface; anda structure provided within at least one of the first and second channels and having an outer surface spaced radially outward from the inner surface to provide a flow passage and at least partially defining the tortuous fluid flow path between the outer and inner surfaces.2. The electric machine according to claim 1 , wherein the stator includes at least one wire winding providing a main stack and end turns extending generally axially outwardly from the ...

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Номер записи: 95
12-09-2013 дата публикации

ROTATING DEVICE

Номер: US20130234552A1
Автор: KODAMA Mitsuo, NONAKA Taketo, SUGIKI Ryusuke
Принадлежит: ALPHANA TECHNOLOGY CO., LTD.

A rotating device includes a base having a peripheral wall with a fastened top cover, an axial body with one end fixed to the base and another end joined with the top cover, a freely rotatable bearing body with the axial body thereinside, a radial dynamic pressure generating groove in either one of surfaces of the axial body, the axial and bearing bodies facing each other in a radial direction, a lubricating medium in a space between the axial and bearing bodies, a radially outward extending lower flange on the one-end side face of the axial body, and a radially outward extending upper flange on the another-end side face of the axial body, a bearing unit in a space between the upper and lower flanges in an axial direction, a lower rod fastened to the lower flange, and an upper rod encircling the lower rod fastened to the upper flange. 1. A rotating device comprising:a base comprising a peripheral wall provided at a peripheral edge of the base;a top cover fastened to the peripheral wall;an axial body having one end fixedly provided to the base, and having another end joined with the top cover;a bearing body which retains thereinside the axial body and which is supported in a freely rotatable manner relative to the base;a radial dynamic pressure generating groove provided in either one of surfaces of the axial body and the bearing body facing with each other in a radial direction;a lubricating medium present in a space between the axial body and the bearing body;a lower flange provided on a side face of the axial body at the one-end side, and extending outwardly of the radial direction; andan upper flange provided on a side face of the axial body at the another-end side, and extending outwardly of the radial direction,the bearing body being placed in a space between the upper flange and the lower flange in an axial direction, andthe axial body comprising a lower rod to which the lower flange is fastened, and an upper rod which encircles the lower rod and to which the ...

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Номер записи: 96
19-09-2013 дата публикации

ELECTRIC MOTOR

Номер: US20130241329A1
Автор: Murakami Satoru, Yagi Nobuyuki
Принадлежит:

According to one embodiment, an electric motor includes a stator, a rotor, bearings and a rotor shaft, in a frame, supporting surfaces on the rotor, and a plurality of threaded holes in the frame, which are configured to receive bolts for pressing the support surfaces from outside. 1. An electric motor comprising:a stator, a rotor, bearings and a rotor shaft in a frame;supporting surfaces on the rotor; anda plurality of threaded holes in the frame, which are configured to receive bolts for pressing the support surfaces from outside.2. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and rotor holders attached to the rotor shaft at respective sides of the rotor core and respectively including the supporting surfaces.3. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and a first separating plate and a second separating plate attached to the rotor shaft and respectively comprising the supporting surfaces.4. An electric motor according to claim 1 , wherein the rotor comprises a rotor core attached to the rotor shaft claim 1 , and a ventilating fan and a supporting body attached to the rotor shaft at respective sides of the rotor core and respectively comprising the supporting surfaces.5. An electric motor comprising:a frame supporting a stator;a bracket and an end plate configured to close respective ends of the frame;a first bearing housing and a second bearing housing respectively retaining bearings, and respectively fixed to the bracket and the end plate from an outside;a rotor shaft arranged inside the frame and rotatably supported by the bearings;a rotor attached to the rotor shaft and opposing the stator;supporting surfaces on the rotor;a plurality of threaded holes formed respectively in the bracket and the end plate to oppose the supporting surfaces, and configured to receive bolts for pressing the support surfaces from ...

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Номер записи: 97
19-09-2013 дата публикации

MOTOR AND DISK DRIVE APPARATUS

Номер: US20130242429A1
Автор: IGUCHI Takuro, IWASAKI Shuji, Miyajima Kazuto, Nishimura Hideki, SATO Kazuhiro, SEKII Yoichi, Shuto Takeyuki, TAMAOKA Takehito
Принадлежит: NIDEC CORPORATION

A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array. 1. A motor comprising:a rotating portion including a rotor magnet; anda stationary portion including a stator facing the rotor magnet; wherein a shaft component including an inner shaft portion arranged around a central axis and an outer shaft portion fixed to an outer circumferential surface of the inner shaft portion;', 'an upper plate portion defining a single monolithic member together with one of the inner shaft portion and the outer shaft portion and extending radially outward from an upper portion of the one of the inner shaft portion and the outer shaft portion; and', 'a lower plate portion defining a single monolithic member together with the other of the inner shaft portion and the outer shaft portion and extending radially outward from a lower portion of the other of the inner shaft portion and the outer shaft portion;, 'the stationary portion includesthe rotating portion includes a sleeve portion which is disposed between the upper plate portion and the lower plate portion;a lubricating oil is continuously present between an upper thrust gap between the sleeve portion and the upper plate portion, a radial gap between the ...

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Номер записи: 98
03-10-2013 дата публикации

DRIVE APPARATUS AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130257193A1
Автор: KAWATA Hiroyuki, TODA Yasuyoshi
Принадлежит: Denso Corporation

A motor drive apparatus includes a heat sink, on which a power module is disposed. A control circuit board and a power circuit board are disposed on axially opposite sides of the heat sink. A component carrier is disposed close to the power circuit board at a side opposite to an output part of a motor case. An electric connector is extended from the component carrier, passed through a hole of a cover and extended to an outside opposite to the output part. Even in a case where a mounting space is limited in a radial direction of the motor case, the electric connector can be easily connected to an external connector of a vehicle. 1. A motor drive apparatus comprising:a motor having a motor shaft;a motor case for housing the motor;an output part protruded from the motor case in one direction of the motor shaft for outputting torque of the motor;a heat sink disposed on a side axially opposite to the output part of the motor case;a connector disposed on a side axially opposite to the output part relative to the heat sink and provided with a power source terminal, which supplies a current for driving the motor, and signal terminals, which supplies signals for controlling drive of the motor;a component carrier formed integrally with the connector and fixed to the heat sink;a plurality of switching elements fixed to the heat sink and for converting the current supplied to the power source terminal of the connector into a current for driving the motor;a power circuit board disposed on the heat sink at a side opposite to the output part and provided with a wiring, through which the current for driving the motor is passed from the power source terminal of the connector via the switching elements;a control circuit board disposed on the heat sink at an output part side and provided with a control circuit for controlling operations of the switching elements based on signals supplied to the signal terminals of the connector; anda cover housing the heat sink, the component carrier, ...

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Номер записи: 99
03-10-2013 дата публикации

BRUSHLESS MOTOR, DISK DRIVE APPARATUS AND BRUSHLESS MOTOR MANUFACTURING METHOD

Номер: US20130257229A1
Автор: Du Hongbing, Enokizono Kazuya, Hashimoto Junichi, Himeno Toshikazu
Принадлежит: NIDEC CORPORATION

A brushless motor includes a plate-shaped armature and a magnet facing either one of a top surface and a bottom surface of the armature. An inner peripheral surface of a base member and an outer peripheral surface of a bearing mechanism contact with each other or face each other in a diametrical direction with an adhesive therebetween in a first fixing part. Further, a rotor yoke and a hub protrusion contact with each other or face each other in a diametrical direction with an adhesive therebetween in a second fixing part. Then, a press-fitting or adhesion is carried out in the other of the first and the second fixing part. 1. A brushless motor , comprising:a stationary unit; anda rotary unit rotatably supported with respect to the stationary unit through a bearing mechanism,wherein the stationary unit includes a flat armature arranged radially outward of the bearing mechanism to extend in a direction orthogonal to a center axis extending in an up-down direction and a base member arranged to support the armature, the base member including a base through-hole extending in the up-down direction,the rotary unit includes a hub having a top plate portion made of a magnetic material and a hub protrusion portion made of a magnetic material and arranged to extend downward from the top plate portion, a rotor yoke made of a magnetic material, the rotor yoke fixed to the hub protrusion portion and positioned below the armature, and a magnet fixed to the hub or the rotor yoke and opposed to one of upper and lower surfaces of the armature,the base member includes an inner circumferential surface defining the base through-hole, the bearing mechanism including an outer circumferential surface, the inner circumferential surface of the base member arranged to make contact with the outer circumferential surface of the bearing mechanism or to radially oppose the outer circumferential surface of the bearing mechanism across an adhesive agent in a first fixing portion,the rotor yoke is ...

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Номер записи: 100