STRUCTURE OF A ROTARY ONE POLYGONSPIEGELS.

SPINDLE ENGINE.

LAGER- UND ANTRIEBSANORDNUNG FUER SCHNELLAUFENDE SPINNORGANE.

OPEN LP SPIN DEVICE.

Magnetic device for pivoting a shaft in a clockwork movement.

Le dispositif de pivotement d’un arbre (101) selon un axe déterminé comprend au moins un palier magnétique (105) comportant un aimant (106) qui exerce une force d’attraction sur un pivot (103) en matériau magnétique de l’arbre. De plus, le palier (105) comporte une structure de centrage du flux magnétique (60) agencée entre l’aimant (106) et le pivot (103), et un support (144) de la structure de centrage. La structure de centrage comprend une partie périphérique (61) et une partie centrale (63) reliée élastiquement à la partie périphérique par au moins un élément de liaison (65), la partie centrale étant formée d’un matériau à haute perméabilité magnétique et présentant des dimensions inférieures à celles de l’aimant, la partie périphérique étant assemblée rigidement au support (144) de manière à ce que la partie centrale soit centrée sur l’axe de pivotement.

Magnetic device for pivoting a shaft in a clockwork movement.

Le dispositif de pivotement d’un arbre (101) selon un axe de pivotement déterminé dans un mouvement horloger comprend au moins un palier magnétique (205) comportant un aimant (206) qui exerce une force d’attraction sur un pivot (103) en matériau magnétique de l’arbre, et un contre-pivot (63) agencé entre l’aimant et le pivot, le contre-pivot étant formé d’un matériau ayant une dureté supérieure à 500 HV et un coefficient de frottement inférieur ou sensiblement égal à 0.1 avec le matériau dont est fait le pivot. Le contre-pivot (63) est formé d’un matériau à haute perméabilité magnétique et présente, en section transversale à l’axe de pivotement, des dimensions inférieures à celles de l’aimant, le contre-pivot étant agencé dans le mouvement horloger de manière à être centré sur l’axe de pivotement.

Device intended for the magnetic transmission of energy

Hydrodynamic bearing module and Spindle Motor having the same

본 발명은 하부에 플랜지부가 형성된 회전축과, 상기 회전축을 회전가능하도록 지지하는 슬리브와, 상기 슬리브의 하단부에 결합되고, 상기 회전축을 지지하는 커버를 포함하고, 상기 회전축의 반경방향에 대하여 상기 회전축과 상기 슬리브 사이에 레디얼 동압 베어링부가 형성되고, 상기 회전축의 축방향에 대하여 상기 플랜지부와 슬리브 사이에 상부 스러스트 동압 베어링부가 형성되고, 상기 플랜지부와 상기 커버 사이에 하부 스러스트 동압 베어링부가 형성된다. The present invention includes a rotating shaft having a flange portion formed in the lower portion, a sleeve for rotatably supporting the rotating shaft, a cover coupled to the lower end of the sleeve and supporting the rotating shaft, the rotating shaft with respect to the radial direction of the rotating shaft; A radial dynamic pressure bearing part is formed between the sleeves, an upper thrust dynamic pressure bearing part is formed between the flange part and the sleeve with respect to the axial direction of the rotating shaft, and a lower thrust dynamic pressure bearing part is formed between the flange part and the cover.

Electric machine having magnetic bearing means

An electric machine comprises a stator 7 and a rotor 17 mounted on a rotor shaft 15. In order to preclude axial vibrations of the rotor shaft the machine is provided with a first magnet 19a incorporated in a thrust block 19 and a second magnet 23 on the rotor shaft. The first and second magnetic means cooperate with each other to urge a bearing portion 15a of the rotor shaft against a bearing surface 19b of the thrust bearing with a predetermined pressure.

Low profile fluid dynamic bearing

The design comprises a shaft and sleeve supported for relative rotation by a journal type fluid dynamic bearing utilizing grooves on one of the shaft or sleeve surfaces. A grooved pattern of a design similar to that usually found on a thrust plate is defined on an axial end surface of the shaft or the counterplate facing the axial end of the shaft, so that thrust is created to maintain separation of the end of the shaft and the facing thrust plate during relative rotation. In one embodiment, to establish and maintain the gap between the shaft end and the facing counterplate, the journal bearing has an asymmetry to pump toward the shaft end having the bearing. In a further refinement, to maintain the shaft and gap within an optimum spacing, a magnet is mounted to provide an axially directed magnetic force on the shaft which works against the axial force created by shaft end thrust bearing. To prevent separation of the shaft and sleeve or hub, the hub which is integrated with a rotating shaft ...

Motor having single cone air dynamic bearing balanced with shaft end magnetic attraction

A single cone air dynamic bearing motor, including a shaft having a diminishing conical taper surface, a sleeve having a concavity opposite the shaft, and magnetic members to generate magnetic attraction between the shaft end and the sleeve. Grooves are formed on the conical taper surface of the shaft or the sleeve so as to create load capacity when the motor rotates, whereby rotating parts of the motor are supported by the axial components of the load capacity balanced with the magnetic attraction. The motor thereby achieves reduction in thickness, current, and cost, and inhibits non-repeatable runout.

ПАССИВНЫЕ МАГНИТНЫЕ ПОДШИПНИКИ ДЛЯ ВРАЩАЮЩЕГОСЯ ОБОРУДОВАНИЯ, ВКЛЮЧАЯ АСИНХРОННЫЕ ЭЛЕКТРИЧЕСКИЕ МАШИНЫ

1. Устройство в виде асинхронной электрической машины, содержащее:корпус машины;корпус подшипника, соединенный с корпусом машины;статор в корпусе машины;ротор, ориентированный внутри статора, имеющий роторный вал, установленный с возможностью вращения в корпусе подшипника;опорный подшипник роторного вала, выбранный из группы, состоящей из смазываемого подшипника и активного магнитного подшипника, в корпусе подшипника, обеспечивающий опору с возможностью вращения роторного вала; иподшипник с постоянным магнитом в корпусе машины, при этом подшипник с постоянным магнитом прикладывает направленную магнитную силу к роторному валу, что создает предварительную нагрузку желаемой интенсивности и величины на опорном подшипнике.2. Устройство по п. 1, в котором направленная магнитная сила предварительно нагружает опорный подшипник в радиальном направлении.3. Устройство по п. 2, в котором постоянный магнит имеет форму сектора, имеющего внутреннюю вогнутую поверхность, расположенную противоположно на расстоянии от роторного вала, наружную выпуклую поверхность и осевую ширину; и создаваемая им магнитная сила выровнена в радиальном направлении с центральной осью роторного вала.4. Устройство по п. 3, в котором форма сектора постоянного магнита имеет окружную поверхность меньше 180°.5. Устройство по п. 4, в котором форма сектора постоянного магнита имеет окружную поверхность приблизительно между 40 и 50°.6. Устройство по п. 3, дополнительно содержащее электротехническую сталь, окружающую наружную выпуклую поверхность постоянного магнита и по меньшей мере часть его осевой ширины для ориентации магнитной силы, воздействующей

Lagerung und Zentrierung von sich drehenden Koerpern

Motorlager für schnelldrehende Kleinmotoren

The invention relates to a motor mount for small high-speed motors, consisting of radial and axial bearing components. The axial bearing is configured as a magnetic bearing and the radial bearing as an air bearing.

Permanentmagnetischer Motor mit magnetischem Axiallager

Permanentmagnetischer Motor mit magnetischem Axiallager und einem oder mehreren Fluidlagern, wobei auf einer Basisplatte eine Statoreinheit angeordnet ist, die einem aus Permanentmagneten bestehenden Magnetring durch einen Luftspalt getrennt gegenüber liegend angeordnet ist und der Magnetring am Innenumfang einer umlaufenden Nabe befestigt ist, die über eine Welle mit den Fluidlagern gegenüber einer Lagerbuchse abgestützt ist und mindestens ein fluiddynamisches Axiallager mit einer axialen Zugkraftkomponente vorgespannt ist, die mindestens teilweise von einem ferromagnetischen Zugring erzeugt ist, der auf der Basisplatte befestigt und unterhalb des Magnetringes angeordnet und von dessen Feldlinien durchflossen ist, dadurch gekennzeichnet, dass die Statoreinheit magnetisch gesehen gegenüber dem Magnetring zentriert ist und keinen nennenswerten axialen Versatz (Offset) aufweist und dass der Zugring keine oder nur eine relativ geringe elektrische Leitfähigkeit bei hoher magnetischer Permeabilität ...

AN ELECTRIC MOTOR

STEP BEARING

ARRANGEMENT WITH A SLIDING BEARING

SPINDLE ENGINE.

ARRANGEMENT WITH A PLAIN BEARING

The invention relates to a device comprising a plain bearing (36), which contains ferromagnetic material and which is provided for radially supporting a shaft (34) that is made of ferromagnetic material. The shaft (34) is mounted in said plain bearing (36) in a manner that enables it to rotate and be axially displaced and has a free end (35). A footstep bearing is provided on the latter, comprises a step rounding (66),which is provided on said free end (35), and comprises a contact element (68, 69) that interacts with the step rounding. This contact element (68, 69) consists, at least in part, of a ferromagnetic material. In addition, at least one permanent magnet (72) is provided, which is placed in the area around the free shaft end (35) between the axial end of the plain bearing (36) at that location and the contact element (68) in order to form a magnetic circuit (82) starting from one pole (74) of the at least one permanent magnet (72) to the other pole (76) of the at least one permanent magnet (72) while passing via the plain bearing (36), the free shaft end (35), the step rounding (66) and the contact element (68). This results in inducing a defined magnetic attractive force between the step rounding (66) and the contact element (68).

DRIVE ASSEMBLY FOR OPEN-END SPINNING MACHINES

Magnetic preloading of bearings in rotating machines

In rotating machine having a vertically oriented rotating shaft, a static magnetic force is used to simulate rotor weight and create the desired bearing preload. By installing a magnet the gravity based preload on the shaft journal bearings of a horizontal machine can be simulated for a vertical shaft. This can increase rotor stability, reduce the machine's vulnerability to hydraulically induced imbalance forces and give a more smooth transition through various shaft speeds.

МАГНИТНЫЙ ШАРНИР

FIELD: watches and other time measuring instruments. SUBSTANCE: element comprises a shaft-like part, having at least a region of ferromagnetic material in direction of its longitudinal axis. Selected element comprises ferromagnetic material at least at level of first end and second end of shaft-like section respectively of longitudinal axis. On both side of first end and on side of second end, a magnetic field is generated at first pole tip and a second magnetic field is created on second pole tip of same direction and opposite orientation, respectively. Each field provides attraction of element to corresponding pole tip and causes unbalance between first and second magnetic fields, surrounding element, leading to difference of forces acting on element, as a result, one end of element can be held down to contact surface of one of pole tips, and other end is kept at a distance from contact surface of other pole tip. Unbalance between magnetic fields occurs near air gap formed between contact surfaces, wherein magnetic fields are asymmetric. Invention also discloses a device, correcting position of clock element during rotation, magnetic hinge, clock mechanism, clock, based on principle, disclosed in method given above. EFFECT: disclosed is a method of aligning clock element by correcting position of said element during rotation. 29 cl, 14 dwg

МАГНИТНЫЙ И/ИЛИ ЭЛЕКТРОСТАТИЧЕСКИЙ ШАРНИР

... 1. Способ ориентирования элемента (1) часов посредством корректировки положения указанного элемента при повороте, при этом элемент содержит первый конец (2) и второй конец (3) и изготовлен из материала, являющегося, по меньшей мере, частично магнитопроницаемым или, соответственно, электростатически проницаемым, либо, по меньшей мере, частично магнитным или соответственно, электростатическим, отличающийся тем, что с обеих сторон элемента, а именно, со стороны первого конца (2) и со стороны второго конца (3), создают два магнитных или, соответственно, электростатических поля, при этом каждое поле обеспечивает притяжение элемента (1) к полюсному наконечнику (4; 6), и вызывают неуравновешенность между указанными магнитными или, соответственно, электростатическими полями, окружающими элемент (1), приводящую к разности сил, действующих на элемент, в результате чего один из концов (2; 3) элемента (1) имеет возможность прижиматься к контактной поверхности (5; 7) одного из полюсных наконечников ...

Turbo-Molekularpumpe

Aufbau eines rotierenden Polygonspiegels.

STEP BEARING

A cardiac pump

PUMP TURBOMOLECULAIRE

A turbo-molecular pump characterized in that three out of five degrees of freedom except the rotation around the rotational axis of a shaft are actively controlled constrainingly by a pair of magnetic radius direction bearings and a pair of magnetic axial bearings, a bell-shaped rotor provided to cover the whole of magnetic bearing and a shaft which is supported by a magnetic bearing passively constraining the remaining two degrees of freedom, and said rotor is rotated at high speed by an inner-rotor type of a driving motor provided between a radius direction bearing and axial bearing.

ELECTRIC MACHINE PROVIDED WITH MAGNETIC MEANS FORMING A STAGE

BASE ASSEMBLY FOR MOTOR AND A MOTOR INCLUDING THE SAME CAPABLE OF REDUCING NOISE

PURPOSE: A base assembly for motor and a motor including the same are provided to improve performance and lifetime. CONSTITUTION: A motor base assembly includes a motor base(110) and a pulling plate(120). The pulling plate is combined with the motor base. The pulling plate prevents the overfloating of a rotary member. The pulling plate reduces the noise due to the rotation of the rotary member. The pulling plate includes a space portion(125). COPYRIGHT KIPO 2013 ...

Motor having single cone fluid dynamic bearing balanced with magnetic attraction

A single cone fluid dynamic bearing motor, including a shaft having a diminishing conical taper surface, a sleeve having a concavity opposite the shaft, lubricant filled in a clearance between the shaft and the sleeve, and magnetic members to generate magnetic attraction between the shaft and the sleeve. Grooves are formed on the conical taper surface of the shaft or the sleeve so as to create load capacity when the motor rotates, whereby rotating parts of the motor are supported by the axial components of the load capacity balanced with the magnetic attraction. The motor thereby achieves reduction in thickness, current, and cost, and inhibits non-repeatable runout.

Base assembly for motor and spindle motor including the same

There is provided a base assembly for a motor, the base assembly including: a base supporting rotation of a rotating member of the motor; and a pulling plate provided to the base to thereby prevent excessive floating of the rotating member, wherein the pulling plate includes a body part not in contact with the base and an extension part extended from the body part to thereby contact the base.

TURBO-MOLEKULARPUMPE

Bearing arrangement e.g. radial axial-thrust bearing arrangement, for machine table, has cooling channels forming circuit by gap and hydraulic unit, where hydraulic fluid is conveyable through circuit

The arrangement has a rotor (3) movably supported to a stator (1). The rotor includes opposite contact areas (7). A gap (9) is formed between the contact areas and is fillable with hydraulic fluid. The stator includes a stator winding (17) that is coolable by cooling channels (15). The cooling channels form a circuit by the gap and a hydraulic unit, where hydraulic fluid is conveyed through the circuit. An inlet drilling (13) and a discharge hole (11) are provided in the gap and are integrated into the circuit.

Electric motor with spherically mounted rotor, especially for rotary pumps, has resulting total force vector incident on material-free region of stator if rotor asymmetrical relative to stator

The device has a rotor (106), a stator (110) and a bearing (136) with which the rotor is spherically mounted and that has a bearing shell (140) and a spherical sliding body movable in the shell. The rotor produces a magnetic field and the bearing shell has a central region with no material designed so that a force vector of the resulting total force is incident on the material-free region if the rotor is asymmetrical with respect to the stator. AN Independent claim is also included for the following: a rotary pump with an inventive device.

PARALLEL KINEMATIC MECHANISM AND BEARINGS AND ACTUATORS THEREOF

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

POMPE TURBOMOLECULAIRE

L'INVENTION CONCERNE LES POMPES TURBOMOLECULAIRES. UNE POMPE TURBOMOLECULAIRE COMPREND NOTAMMENT UN ROTOR EN FORME DE CLOCHE 9 QUI RECOUVRE UNE STRUCTURE DE PALIER QUI COMPREND UNE PAIRE DE PALIERS MAGNETIQUES RADIAUX ET UNE PAIRE DE PALIERS MAGNETIQUES AXIAUX. LA STRUCTURE DE PALIER MAGNETIQUE EFFECTUE UNE COMMANDE ACTIVE PORTANT SEULEMENT SUR TROIS DES CINQ DEGRES DE LIBERTE DU ROTOR. CE DERNIER EST ENTRAINE EN ROTATION A GRANDE VITESSE PAR UN MOTEUR 10 DU TYPE A ROTOR INTERIEUR. APPLICATION AUX INSTALLATIONS DE PRODUCTION D'ULTRA-VIDE.

DEVICE COMPRISING A PLAIN BEARING

ELECTRIC MACHINE COMPRISING MAGNETIC BEARING MEANS

PARALLEL KINEMATIC MECHANISM AND BEARINGS AND ACTUATORS THEREOF

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

Articulation with magnetic ball

DRIVE ASSEMBLY FOR OPEN-END SPINNING MACHINES

ASSEMBLY OF PINS FOR TURBINES OF SPINNING MILL

МАГНИТНЫЙ И/ИЛИ ЭЛЕКТРОСТАТИЧЕСКИЙ ШАРНИР

FIELD: physics. SUBSTANCE: two magnetic/electrostatic fields are induced from both ends of said element, each attracting it to pole piece. Said fields feature unbalanced intensity nearby said element. This develops the difference of forces to make one element end be pressed against contact surface of one pole piece while opposite end is kept spaced from the other pole piece. Besides, invention discloses the correcting device including two pole pieces with support surfaces. Each is attracted by magnetic/electrostatic field transmitted by one of the element ends, or induces magnetic/electrostatic field attracting one of the elements ends. Magnetic/electrostatic fields acting at the element both ends feature different intensity. This makes only one element end be attracted to get in contact with one of the surfaces of pole pieces. EFFECT: stable operation of the watch at whatever position. 29 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G04B 1/00 (13) 2 565 329 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011145342/28, 08.11.2011 (24) Дата начала отсчета срока действия патента: 08.11.2011 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): МАРШАЛЬ Сильвен (FR), САРКИ Давиде (CH), КАРЛЕН Оливье (CH), ТОДЕШИНИ Арно (CH) (43) Дата публикации заявки: 20.05.2013 Бюл. № 14 R U (73) Патентообладатель(и): МОНТР БРЕГЕ С.А. (CH) 09.11.2010 EP 10190510.7 (45) Опубликовано: 20.10.2015 Бюл. № 29 2 5 6 5 3 2 9 R U (54) МАГНИТНЫЙ И/ИЛИ ЭЛЕКТРОСТАТИЧЕСКИЙ ШАРНИР (57) Реферат: Использование: для корректировки элемента электростатические силы, действующие на два часов при повороте. Сущность изобретения конца элемента, имеют разную напряженность, заключается в том, что c двух концов указанного в результате чего притягивается только один элемента создаются два магнитных/ конец элемента, который контактирует только с электростатических поля, каждое из которых одной из поверхностей полюсных ...

PASSIVE MAGNETIC BEARINGS FOR ROTATING EQUIPMENT INCLUDING INDUCTION MACHINES

Passive permanent magnet bearings (40) are incorporated into an electric machine (induction motor), in addition to a support bearing (32) on the shaft (28), being either an active magnetic, sliding or roller bearing. The magnetic field direction of the passive magnetic bearings (40) is aligned with the direction of the preload of the support bearing (32) in radial and optional axial direction to oppose "offsetting forces", like the rotor weight during starting up or stopping of the machine. The passive magnetic bearings (40) might as well absorb force on the rotor shaft (28) in radial or axial direction during normal operation, which might lead to noise or higher energy consumption.

Axial vibration preventing mechanism and brushless motor having it

Radiator fan

The invention relates to an radiator fan comprising a fan frame, a rotor member, a stator member and a bearing system, wherein, the center of the fan frame forms a bearing seat in a protruding way, the stator member is sheathed on the outer edge of the bearing seat, the bearing system is arranged in the bearing seat and comprises a bearing, the rotor member is provided with a rotating shaft penetrating the inside of the bearing, at least one end of the top end and bottom end of the rotating shaft sinks from the outer surface to the inside to form a groove, the bearing system also comprises atleast one magnetic attraction part which is aligned to the upper section of at least one groove and is arranged around the rotating shaft and an annular space is formed between the magnetic attraction part and the rotating shaft. The radiator fan utilizes the magnetic attraction force of the magnetic attraction part for continuously attracting the rotating shaft and keeping the rotary balance of the ...

SPINDELMOTOR

SEALED BEARING MODULE

Disclosed is a sealed bearing module (1) of a tidal turbine including a rotor including rotor blades disposed on a rotor hub, and a rotor shaft carrying the rotor for transmitting a drive torque from the rotor hub to a transmission or generator in a nacelle, wherein the nacelle includes a housing (4), and wherein the bearing module (1) includes two bearing rings (6, 8), wherein at least one of the bearing rings (6, 8) is a split bearing ring including a first bearing ring part (6-1) and a second bearing ring part (6-2), wherein one of the bearing rings (8) includes axially extending bores (12) for attaching the bearing ring (8) directly to the nacelle housing (4), wherein the other bearing ring (6) is connected to a rotor shaft (2) and/or to the rotor hub, and wherein the split bearing ring (6) is preloaded by a preload element (26, 60).

PARALLEL KINEMATIC MECHANISM AND BEARINGS AND ACTUATORS THEREOF

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

PARALLEL KINEMATIC MECHANISM AND BEARINGS AND ACTUATORS THEREOF

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

MACHINE ELECTRIQUE MUNIE DE MOYENS MAGNETIQUES FORMANT UN PALIER

MACHINE ELECTRIQUE COMPORTANT UN STATOR 7 ET UN ROTOR 17 MONTE SUR UN ARBRE DE ROTOR 15. POUR EMPECHER DES VIBRATIONS AXIALES DUDIT ARBRE, LA MACHINE EST MUNIE D'UN PREMIER MOYEN MAGNETIQUE 19A INCORPORE A UNE CRAPAUDINE 19, ALORS QU'UN SECOND MOYEN MAGNETIQUE 23 EST PREVU A L'ARBRE DE ROTOR. LES PREMIER ET SECOND MOYENS MAGNETIQUES COOPERENT L'UN AVEC L'AUTRE POUR APPLIQUER UNE PARTIE DE PALIER 15A DE L'ARBRE DE ROTOR 15 CONTRE UNE FACE DE PALIER 19B AVEC UNE FORCE D'APPLICATION DEFINIE D'AVANCE. APPLICATION: MOTEUR ELECTRIQUE A COURANT CONTINU, SANS COLLECTEUR.

ELECTRIC MACHINE PROVIDED WITH MAGNETIC MEANS FORMING A STAGE

Magnetic device for pivoting an arbor in a timepiece movement

The device for pivoting an arbor about a determined axis includes at least one magnetic bearing including a magnet which exerts a force of attraction on a pivot, made of magnetic material, of the arbor. Further, the bearing includes a magnetic flux centring structure arranged between the magnet and the pivot, and a support for the centring structure. This centring structure includes a peripheral portion and a central portion resiliently connected to the peripheral portion by at least one connecting element, the central portion being formed of a highly magnetically permeable material and having smaller dimensions than those of the magnet. The peripheral portion is rigidly force fitted to the support so that the central portion is centred on the pivot axis.

Shaftless spinning rotor for an open-end spinning machine

A shaftless spinning rotor for an open-end spinning machine is adapted to operate as a rotor driven by a stator in an axial field motor supported thereon by a combined magnetic and gas bearing producing separate magnetic fields for guiding orientation of the rotational axis of the rotor and for driving rotation thereof which achieves smooth substantially non-oscillating operation with minimal heating in the region of the axis of rotation by interposing a barrier layer with nonmagnetic properties between respective means for conducting the magnetic flux of the driving and guiding magnetic fields for decoupling the magnetic fields. In particular, separate yokes are utilized for conducting the fluxes of the driving and guiding magnetic fields and permanent magnets are primarily used to generate the magnetic fields.

DOUBLE UNIVERSAL JOINT WITH A RADIAL MOVABLE CENTRING DISC FOR THE TWO JOINTS WITH CROSS-MEMBERS

ROTATING ANODE X-RAY TUBE PROVIDED WITH AXIAL BEARING ARRANGEMENT

PROBLEM TO BE SOLVED: To provide a rotating anode X-ray tube including an axial bearing which is particularly suitable for the combination with a radially spiral slot bearing. SOLUTION: In a conventional axial bearing generally having two tooth-like structures directed radially and arranged opposite to each other, there is the problem that substantial radial force is generated during the start stage and stop stage, and the radial force produces substantial friction of a radially spiral slot bearing in particular. In this X-ray tube, by the arrangement of at least two magnet elements 50, 55 separated in the axial direction and connected together so as to absorb the force of the axial bearing, the axial bearing having significantly small radial force, and accordingly, a small load of a radial bearing can be realized. The problem related to the axial bearing of conventional technology is resolved, by using the axial bearing in the form of a one-point ball bearing. COPYRIGHT: (C)2001,JPO ...

Magnetic preloading of bearings in rotating machines

In a rotating machine 240 having a vertically oriented rotating shaft 110 a static magnetic force provided by magnets 330, 350 is used to simulate rotor weight and create the desired bearing preload in hydrodynamic journal bearings 122, 126 & 340. By installing a magnet 330, 350 the gravity based preload on the shaft journal bearings 122, 126, 340 of a horizontal machine can be simulated for a vertical shaft 110. This can increase rotor stability, reduce the machines vulnerability to hydraulically induced imbalance forces and give a more smooth transition through various shaft speeds.

BEARING SYSTEM FOR SHAFTS WHICH ROTATE AT HIGH SPEED

1422386 Automatic control of position SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 28 Sept 1973 [4 Oct 1972] 45581/73 Headings G3N and G3R [Also in Division F2] The vertical shaft 1 of a suspended rotor 12 has a shaped end 2 which is supported in a spiral groove cup bearing 3 by the attractive force of a magnet 5. A cushion 13, e.g. of rubber or plastics material or a spring bellows, prevents the transmission of vibrations from the rotor 12 to a housing 6. Undesired precessional movement of the rotor 12 is damped by an electromagnet 14 correctively energized from a circuit 10 in dependence upon position-deviation signals derived from a transducer 8. The shaft 1 may be horizontally disposed, and the magnet 5 may be an electromagnet energized in dependence upon signals derived from a position or speed responsive transducer Fig. 1 (not shown). Arrangements in which the repulsive force between magnets is employed to urge the shaft 1 into the bearing 3 are described with reference to Figs. 3 and 4 (not shown) and embodiments in which magnets are located remote from bearing 3 are described with reference to Figs. 5 and 6 (not shown).

DEVICE COMPRISING A PLAIN BEARING

SPINDLE MOTOR

L'invention concerne un moteur d'entraînement à disque comportant des moyens permettant d'empêcher qu'une usure résultant d'un contact coulissant de la surface d'un palier à pression dynamique de poussée se produise au moment du démarrage dudit moteur, caractérisé en ce qu'une colonne cylindrique (4) d'un palier à pression dynamique radiale présentant, sur sa surface périphérique externe, une rainure générant une pression dynamique radiale, et un disque (3) d'un palier à pression dynamique de poussée présentant, sur sa surface supérieure, une rainure générant une pression dynamique de poussée, sont montés à l'extrémité supérieure axiale d'un noyau de stator (2) présentant un stator (2a) comportant une bobine (7) enroulée sur celui-ci, cependant qu'un cylindre (6) ayant une surface intérieure lisse orientée vers la colonne cylindrique (4) du palier à pression dynamique radiale, et un aimant de rotor (8) orienté vers l'enroulement (7) sont disposés dans un moyeu (5) formant un organe de rotation ...

MAGNETIC AND/OR ELECTROSTATIC PIVOT

Method for orienting a timepiece component made of magnetic/electrostatic material. On both sends of this component, two magnetic/electrostatic fields each attract it onto a pole piece, with an unbalance in the intensity of said fields around said component, in order to create a differential in the forces thereon and to press one of said ends onto a contact surface of one of said pole pieces, and to hold the other end at a distance from the other pole piece. Magnetic/electrostatic pivot including such a component with two ends. It includes a guide device with surfaces of two pole pieces each attracted by a magnetic/electrostatic field transmitted by one of said ends, or generating a magnetic/electrostatic field attracting one of said ends, the magnetic/electrostatic forces exerted on said two ends are of different intensity, in order to attract only one end into contact with only one of said pole piece surfaces.

DEVICE COMPRISING A PLAIN BEARING

The invention relates to a device comprising a plain bearing (36), which contains ferromagnetic material and which is provided for radially supporting a shaft (34) that is made of ferromagnetic material. The shaft (34) is mounted in said plain bearing (36) in a manner that enables it to rotate and be axially displaced and has a free end (35). A footstep bearing is provided on the latter, comprises a step rounding (66),which is provided on said free end (35), and comprises a contact element (68, 69) that interacts with the step rounding. This contact element (68, 69) consists, at least in part, of a ferromagnetic material. In addition, at least one permanent magnet (72) is provided, which is placed in the area around the free shaft end (35) between the axial end of the plain bearing (36) at that location and the contact element (68) in order to form a magnetic circuit (82) starting from one pole (74) of the at least one permanent magnet (72) to the other pole (76) of the at least one permanent magnet (72) while passing via the plain bearing (36), the free shaft end (35), the step rounding (66) and the contact element (68). This results in inducing a defined magnetic attractive force between the step rounding (66) and the contact element (68).

SPINDLE MOTOR

PURPOSE: To diminish the starting torque of a dynamic pressure thrust bearing by controlling a repulsive force or an attracting force working between an electromagnet and a permanent magnet, and by setting a thrust load regulator for regulating a load applied to the thrust bearing. CONSTITUTION: A spindle motor is provided with an electromagnet 42 sat on a motor fixing section 1, and a permanent magnet 43 confronted with the electromagnet 42 and set on a motor rotating section 6. Then, current fed to the electromagnet 42 is controlled, and a repulsive force or an attracting force working between the electromagnet 42 and the permanent magnet 43 is controlled, and a thrust load regulator 41 for regulating a thrust load applied to a thrust bearing is set. Then, between the permanent magnet 43 and the electromagnet 42, the attracting force or a repulsive force is worked, and by setting the polarity of the electromagnet in the direction for reducing the thrust load at the time of starting a ...

Rotating anode X-ray tube used in a combination with a spiral flute bearing has an axial bearing with a magnetic arrangement having two elements exerting a magnetic force fixed in an axial direction to the anode

Rotating anode X-ray tube has an axial bearing with a magnetic arrangement having two elements exerting a magnetic force fixed in an axial direction to the anode. The magnetic force receives axial bearing forces in one direction. Preferred Features: The first element is made of a magnetic ring (50) and the second element is a ring (55) made of a magnetizable metal. The bearing has a front surface with a ball lying in a cone. The ball has a coating made of TiC and/or TiN.

Magnetische Maschine

Fluid rotary bearing for coordinate measurement device has membrane joined to bearing element by supports at distance from edge to bound volume subjected to pressure lower than fluid pressure

The device has a rotation axis and stator and rotor forming bearing elements with an intervening gap. At least one surface is a membrane via which fluid can be forced into the gap at a first pressure preferably dependent on the load on the bearing and joined to its bearing element by supports at a distance from its edge. The supports, membrane and bearing element bound a volume subjected to a second pressure significantly lower than the first. The device has a rotation axis (34) and stator (50) and rotor (52) forming first and second bearing elements with opposing surfaces with an intervening gap (64). At least one of the surfaces is a membrane (66) with an edge via which fluid can be forced into the gap at a first pressure preferably dependent on the load on the bearing. The membrane is joined to its bearing element by supports (70a,70b,100a,100b) at a distance from its edge. The supports, membrane and bearing element bound a volume subjected to a second pressure significantly lower than ...

Umwälzpumpe und Verfahren zur Flüssigkeitsschmierung eines sphärischen Lagers in einem Elektromotor

Umwälzpumpe mit einem Elektromotor (14), welcher einen Rotor (26) und einen Stator (16) umfaßt, wobei der Rotor (26) an einem sphärischen Lager (34) gelagert ist, welches einen Gleitkörper (38) mit konvexer sphärischer Oberfläche (40) und eine Lagerpfanne (42; 100) mit konkaver sphärischer Oberfläche (44; 102) umfaßt und welches flüssigkeitsgeschmiert mit einem Schmierungsbereich (68; 104) zwischen dem Gleitkörper (38) und der Lagerpfanne (42; 100) ist, dadurch gekennzeichnet, daß der Schmierungsbereich (68; 104) zu einem Halter (36) für den Gleitkörper (38) hin geschlossen ist und daß eine Strömungsführung (80) zur Zuführung von Schmierungsflüssigkeit zu dem und zur Abführung von Schmierungsflüssigkeit von dem Schmierungsbereich (68; 104) in dem Rotor (26) ausgebildet ist, so daß die Strömungsführung (80) getrennt von einem Spalt (33) zwischen Stator (16) und Rotor (26) ist.

SPINNING ROTOR ASSEMBLY

... 1494455 Bearings DORNIER SYSTEM GmbH 15 March 1976 [23 April 1975] 10264/76 Heading F2A [Also in Division D1] A spinning rotor assembly comprises a mounting, a shaft 6 with a rotor 4 on one end and a driving motor, the shaft being supported by a radial bearing 48 which is on a common axis with a seal 66 between it and the rotor, both being carried flexibly in the mounting, and the other end of the shaft being mounted by a spherical or part-spherical bearing end 26 in a bearing cup 28. The motor comprises a stator 12 and an armature 16 on rotor 4. As shown in Fig. 1 the bearing 48 and seal 66 are mounted flexibly by "0" rings 70, 72. The spherical bearing is similarly mounted by "0" rings 34, 38. In the Fig. 3 embodiment the bearing 26/28 is carried by a membrane 90 extending across the housing of the assembly and behind it a pot-shaped damper 96 is located. The housing 8 contains lubricant to a level below shaft 6 and helically grooved pumps 64 and 42 direct lubricant towards the bearings ...

Parallel kinematic mechanism and bearings and actuators thereof

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

ANORDNING MED AXIALLAGER

Hydrodynamic bearing unit

A hydrodynamic bearing unit is provided, by which the touch between oil and a sealing member in a housing is prevented to prevent oil leakage. A bearing member made of a sintered lubricant-containing metal is disposed along the inner periphery of the housing and a spindle is supported in a non-contact manner by the hydrodynamic oil pressure that is generated in a bearing gap by the rotation of the spindle. The opening of the housing is sealed by the sealing member. A ventilation path is formed so as to communicate a sealed space enclosed by the distal end of the spindle at the bottom of the housing, the bearing member and the housing with open air. An oil reservoir is formed between the inner periphery of the housing and the outer periphery of the bearing member at the end portion of the opening side of the housing. The oil reservoir is made so as to communicate with the ventilation path.

Thrust bearing

A thrust bearing is devised to comprise at least two disc members (1a, 2a), each having a flat surface (3a, 4a) parallel to that of the other member and a pattern of spiral grooves being provided on one (3a) of the flat surfaces so as to induce dynamic fluid pressure to withstand the thrust therebetween when one member (1a) is rotated relative to the other (2a), an aligning means being provided to bear radial load and said aligning means being a magnet piece (11a, 12a) embedded in each of said flat surfaces (3a, 4a) and/or a small piece (16) of hard material centrally disposed between the opposing flat surfaces (3a, 4a) on each of which a dent (14, 15) is formed to form a space receiving the small piece (16) therein.

Kreiselpumpen-Motor-Einheit mit magnetischer Stabilisierung

Scissors with a magnetic region of movement

The cohesive force of the scissor blades 3, 4 of a pair of scissors, in whose region of movement at least one magnet 5, 6 is inserted, is improved by providing a magnetic ring closure made of ferromagnetic material 8. The material 8 has a relative permeability mu r which is greater than the relative permeability of the remaining scissors material 9. The ring 7 of the ring closure connects unlike magnet poles which do not butt against each other (Figure 3). ...

ELEKTROMASCHINE MIT KUGELFOERMIGEM LUFTSPALT

Stellvorrichtung für den Vorspannmagneten eines Spindelmotors

Motorlager für schnelldrehende Kleinmotoren

An electric motor thrust bearing biasing arrangement

The motor, for example a permanent magnet direct current electric motor, has a moving coil armature, i.e. an ironless armature (10). Permanent magnet means are provided to bias one end of a motor shaft (12) into contact with a thrust face (17) to ensure that brush gear (7) follows a consistent track along a commutator (11). In a preferred embodiment a permanent magnet (16) defines the thrust face and the shaft is of high magnetic permeance. Other arrangements are disclosed including repulsion systems biasing non-magnetic thrust bearing together. ...

A magnetic machine or coupling

... 1,134,228. Centrifugal pumps and fans; hydraulic turbines. N. LAING. Nov. 25, 1965 [Nov. 27, 1964], No. 50210/65. Headings F1C and F1T. [Also in Divisions B2, F2, F4 and H2] Centrifugal pumps An impeller rotatable about a vertical axis, and arranged for upward and outward flow of the liquid, has secured to its upper face a hemispherical body which has permanent or induced magnetic poles and constitutes the inner member of a magnetic coupling (see Division H2). The outer member of the coupling includes a body having an internal hemispherical surface and having permanent magnet poles co-operating with the inner member; the two are separated by a partition which forms part of the wall between the pump casing and the motor casing above it. The outer member is secured to the motor rotor. A small peripheral gap is provided between the top of the (cylindrical) suction chamber and the impeller to permit limited flow from the surrounding pressure chamber. The suction and pressure chambers are also ...

DEVICE COMPRISING A PLAIN BEARING

The invention relates to a device comprising a plain bearing (36), which contains ferromagnetic material and which is provided for radially supporting a shaft (34) that is made of ferromagnetic material. The shaft (34) is mounted in said plain bearing (36) in a manner that enables it to rotate and be axially displaced and has a free end (35). A footstep bearing is provided on the latter, comprises a step rounding (66),which is provided on said free end (35), and comprises a contact element (68, 69) that interacts with the step rounding. This contact element (68, 69) consists, at least in part, of a ferromagnetic material. In addition, at least one permanent magnet (72) is provided, which is placed in the area around the free shaft end (35) between the axial end of the plain bearing (36) at that location and the contact element (68) in order to form a magnetic circuit (82) starting from one pole (74) of the at least one permanent magnet (72) to the other pole (76) of the at least one permanent magnet (72) while passing via the plain bearing (36), the free shaft end (35), the step rounding (66) and the contact element (68). This results in inducing a defined magnetic attractive force between the step rounding (66) and the contact element (68).

PUMP TURBOMOLECULAIRE

L'INVENTION CONCERNE LES POMPES TURBOMOLECULAIRES. UNE POMPE TURBOMOLECULAIRE COMPREND NOTAMMENT UN ROTOR EN FORME DE CLOCHE 9 QUI RECOUVRE UNE STRUCTURE DE PALIER QUI COMPREND UNE PAIRE DE PALIERS MAGNETIQUES RADIAUX ET UNE PAIRE DE PALIERS MAGNETIQUES AXIAUX. LA STRUCTURE DE PALIER MAGNETIQUE EFFECTUE UNE COMMANDE ACTIVE PORTANT SEULEMENT SUR TROIS DES CINQ DEGRES DE LIBERTE DU ROTOR. CE DERNIER EST ENTRAINE EN ROTATION A GRANDE VITESSE PAR UN MOTEUR 10 DU TYPE A ROTOR INTERIEUR. APPLICATION AUX INSTALLATIONS DE PRODUCTION D'ULTRA-VIDE. THE INVENTION CONCERNS TURBOMOLECULAR PUMPS. A TURBOMOLECULAR PUMP INCLUDES IN PARTICULAR A BELL-SHAPED ROTOR 9 WHICH COVERS A BEARING STRUCTURE WHICH CONSISTS OF A PAIR OF RADIAL MAGNETIC BEARINGS AND A PAIR OF AXIAL MAGNETIC BEARINGS. THE MAGNETIC BEARING STRUCTURE MAKES AN ACTIVE CONTROL RELATING TO ONLY THREE OF THE FIVE DEGREES OF FREEDOM OF THE ROTOR. THE LATTER IS DRIVEN IN ROTATION AT HIGH SPEED BY A MOTOR 10 OF THE INTERNAL ROTOR TYPE. APPLICATION TO ULTRA-VACUUM PRODUCTION FACILITIES.

BEARING SYSTEM FOR SHAFTS WHICH ROTATE AT HIGH SPEED

병렬 운동학적 메커니즘 및 이의 베어링 및 액추에이터

... 플랫폼의 방향을 제어하는 개량 병렬운동장치는 방향 제어 플랫폼에 자기 결합 볼 조인트를 사용하는 동시에 이 조인트를 작동시키는 개별 선형 액추에이터를 사용하기 때문에 그 체적에 비해 가동범위가 더 넓다. 이 선형 액추에이터는 수정 할배크 배열로 구성된 영구자석에 의하여 생성될 수 있는 자장에 속한 인쇄회로기판(PCB) 기반 음성 코일 액추에이터일 수 있다. 이 PCB 기반 음성 코일 액추에이터에는 PCB에 내장되어 고도의 정확성을 가지고 액추에이터의 위치를 파악하는 것을 보조하는 위치 감지 장치(PSD)가 장치될 수 있다. 방향 제어 플랫폼 탑재물의 위치는 개선된 정확성 및 속도에 따라 역학적으로 재설정될 수 있다.

Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor

An apparatus for rotatably journaling a rotor of a flat spindle motor about a stator comprising a spindle magnet disc disposed on the rotor assembly of the flat spindle motor and journaled about the spindle motor shaft having a disc shaped first magnetized region with an outer radius r comprised of a plurality of axial aligned poles, a disc shaped second region having an outer radius r2 (where r2>r) comprised of a single pole, and a disc shaped non-magnetized spacer region disposed there between. The integrated spindle magnet disc is disposed on the inside surface of a rotor over complementary axially aligned electromagnet poles which are disposed on the base of the stator assembly. A like aligned single pole is fixedly attached to the stator and disposed in opposition to the second magnetized region having like aligned pole of the integrated spindle permanent magnet. The single poles are disposed on both the rotor and stator in attraction mode with opposite poles facing one another, or ...

Spindle motor

A spindle motor wherein a rotor (6) is supported by a stator (1) through a thrust bearing (13) and a radial bearing (8). At least the thrust bearing (13) is a hydrodynamic bearing. The spindle motor is provided with a device for adjusting the thrust load that is applied to the thrust bearing (13). The load adjusting device has an electromagnet (42) that is provided on the stator (1) and a permanent magnet (43) that is provided on the rotor (6) in opposing relation to the electromagnet (42). Either the repelling force or the attraction force, which acts between the electromagnet (42) and the permanent magnet (43) is controlled by changing the current supplied to the electromagnet. ...

Spindle motor for driving hard disk drive, has magnetic prestress-generating unit generating magnetic force for bearing exclusively from components of drive system, where hydraulic and magnetic forces are directed in opposite direction

The motor has a fluid-dynamic bearing system provided with radial bearings (18, 22) and an axial bearing (28), where axial hydraulic force (Fh) is generated during operation of the motor. A motor component is pivotably supported about a rotational axis (14) by the fluid-dynamic bearing system and is driven by an electromagnetic drive system. A magnetic prestress-generating unit generates magnetic force (Fm) for the axial bearing exclusively from components of the drive system. The hydraulic and magnetic forces are directed in opposite direction. An independent claim is also included for a hard disk drive including a writing and reading device for writing and reading data.

Permanentmagnetischer Motor mit magnetischem Axiallager

Permanentmagnetischer Motor mit magnetischem Axiallager und einem oder mehreren Fluid-Lagern (11, 13, 14), wobei einer Statoreinheit (4) ein aus Permanentmagneten bestehender Magnetring (5) durch einen Luftspalt getrennt gegenüber liegend angeordnet ist und der Magnetring (5) am Innenumfang einer umlaufenden Nabe (2) befestigt ist, die über eine Welle (1) mit den Fluid-Lagern (11, 13, 14) gegenüber einer Lagerbuchse (3) abgestützt ist und mindestens ein fluiddynamisches Axiallager (11) mit einer axialen Zugkraftkomponente vorgespannt ist, die mindestens teilweise von einem ferromagnetischen Zugring (7) erzeugt ist, der unterhalb des Magnetringes (5) angeordnet und von dessen Feldlinien durchflossen ist, wobei der Zugring (7) keine oder nur eine relativ geringe elektrische Leitfähigkeit bei hoher magnetischer Permeabilität aufweist, dadurch gekennzeichnet, dass der Zugring (7) im magnetischen Feld keine oder nur geringe Wirbelströme ausbildet, indem im Zugring (7) Strukturen in Form von einer oder mehreren Ringrillen (24) oder eine mäanderförmige Struktur mit abwechselnd nach außen und innen radial geöffneten Schlitzen (26, 27) oder einer Reihe von schräg oder radial ausgebildeten Rillen (29) eingeformt sind, wobei im Zugring (7) eine Struktur (23) aus Einprägungen oder Einformungen angeordnet ist, um die elektrische Leitfähigkeit zu minimieren. Permanent magnet motor with magnetic thrust bearing and one or more fluid bearings (11, 13, 14), wherein a stator unit (4) consisting of a permanent magnet magnetic ring (5) separated by an air gap is arranged opposite and the magnetic ring (5) on the inner circumference a circumferential hub (2) is fixed, which is supported via a shaft (1) with the fluid bearings (11, 13, 14) relative to a bearing bush (3) and at least one fluid dynamic thrust bearing (11) is biased with an axial tensile component , which is at least partially generated by a ferromagnetic pull ring (7), which is arranged below the magnetic ring (5) and flows ...

Spindelmotor.

ROTOR ASSEMBLY FOR A TURBO MOLECULAR PUMP

ROTARY ASSEMBLY

ELECTRIC MACHINE

An electric machine comprises a stator 7 and a rotor 17 mounted on a rotor shaft 15. In order to preclude axial vibrations of the rotor shaft the machine is provided with a first magnet 19a incorporated in a thrust block 19 and a second magnet 23 on the rotor shaft. The first and second magnetic means cooperate with each other to urge a bearing portion 15a of the rotor shaft against a bearing surface 19b of the thrust bearing with a predetermined pressure.

A ROTOR DEVICE WITH MAGNETIC RADIAL BEARINGS

Integrated passive magnetic bearing system and spindle permanent magnet for use in a spindle motor

An apparatus for rotatably journaling a rotor of a spindle motor about a stator comprising a plurality of magnetic bearings for use in a disc drive including an annular ring single-pole magnet which is integral with the spindle permanent magnet of a spindle motor rotor assembly and disposed in opposition to a complementary annular magnet ring attached to the stator assembly of the spindle motor. These magnetic bearings in conjunction with an axial pivot form a radially stable bearing system for maintaining rotor displacement about the stator in conjunction with a conventional axial pivot. The present invention provides for the unique combination of magnetic bearings with other conventional pivots for use in disc drive systems.

Shaftless rotor for open end spinner

The shaftless rotor (1), for an open-end spinner, has a barrier layer (9) with non-magnetic qualities between the guide (3',6) for the magnetic flow for the magnetic drive fields and the guide magnetic flow, to separate one of the flows.

SELF-ADJUSTING BUSHING BEARING WITH MAGNETIC LEVITATION

A self-adjusting bushing bearing receivable within a housing to control movement of a shaft therein. Shaft magnet segments are configured to receive the shaft therein, where each shaft magnet segment has an inner portion having an inner polarity and an outer portion of the shaft magnet segments has an outer polarity that is opposite the inner polarity. Bearing magnet segments are configured to receive the shaft magnet segments therein, where each of the bearing magnet segments has an inner portion having an inner polarity and an outer portion of the bearing magnet segments has an outer polarity that is opposite the inner polarity. A springy element is disposed between the housing and the bearing magnet segments to bias the bearing magnet segments radially inwardly relative to the shaft magnet segments. The outer polarity of the shaft magnet segments is the same as the inner polarity of the bearing magnet segments so as to repel each other. 1. A self-adjusting bushing bearing that is receivable within a housing and configured to control movement of a shaft therein , comprising:shaft magnet segments configured to receive the shaft therein, wherein each of the shaft magnet segments has an inner portion having an inner polarity and an outer portion of the shaft magnet segments has an outer polarity that is opposite the inner polarity; andbearing magnet segments configured to receive the shaft magnet segments therein, wherein each of the bearing magnet segments has an inner portion having an inner polarity and an outer portion of the bearing magnet segments has an outer polarity that is opposite the inner polarity; anda springy element disposed between the housing and the shaft to bias the shaft radially inwardly relative to the housing;wherein the outer polarity of the shaft magnet segments is the same as the inner polarity of the bearing magnet segments so as to repel each other.2. The SABB according to claim 1 , wherein the springy element is disposed between the ...

Parallel Kinematic Mechanism and Bearings and Actuators Thereof

An improved parallel kinematic mechanism to orient a platform has a higher range of motion for its volume due to the use of magnetically coupled ball joints at the orienting platform and the individual linear actuators operating those joints. The linear actuators may be printed circuit board (PCB) based voice coil actuators, in a magnetic field which may be generated by permanent magnets configured as a modified Halbach array. The PCB based voice coil actuators may have a position sensitive device (PSD) embedded on the PCB to assist in determining location of the actuator with a high degree of accuracy. The payload of the orienting platform may be dynamically repositioned with improved accuracy and speed.

Magnetic device for pivoting an arbor in a timepiece movement

The device for pivoting an arbor about a determined axis includes at least one magnetic bearing including a magnet which exerts a force of attraction on a pivot, made of magnetic material, of the arbor. Further, the bearing includes a magnetic flux centring structure arranged between the magnet and the pivot, and a support for the centring structure. This centring structure includes a peripheral portion and a central portion resiliently connected to the peripheral portion by at least one connecting element, the central portion being formed of a highly magnetically permeable material and having smaller dimensions than those of the magnet. The peripheral portion is rigidly force fitted to the support so that the central portion is centred on the pivot axis.

Turbo-molecular pump

A turbo-molecular pump characterized in that three out of five degrees of freedom except the rotation around the rotational axis of a shaft are actively controlled constrainingly by a pair of magnetic radius direction bearings and a pair of magnetic axial bearings, a bell-shaped rotor provided to cover the whole of magnetic bearing and a shaft which is supported by a magnetic bearing passively constraining the remaining two degrees of freedom, and said rotor is rotated at high speed by an inner-rotor type of a driving motor provided between a radius direction bearing and axial bearing.

Axial flow molecular pump

Patent JPS4824967B1

Ceramic step bearing in a centrifugal pump

내용 없음. No content.

Step bearing

一种具有球形滑动表面的立式推力轴承，其固定安装的陶瓷圆球安装在支柱上；在工作情况下，带有凹形帽的电磁转了在该轴承上旋转着。运行期间，带有帽的转子由磁性推力压向支柱，而当与该磁性推力反向的轴向推力变为高于该磁性推力时，该转子的第二环形轴承部件阻止该帽的轴向运动。

Base assembly for motor and motor including the same

본 발명의 일 실시예에 따른 모터용 베이스 어셈블리는 모터용 베이스; 및 상기 모터용 베이스에 결합되어 상기 모터의 회전부재의 과부상을 방지하는 풀링플레이트;를 포함하며, 상기 풀링플레이트는 상기 회전부재의 회전시 발생되는 소음을 저감시키도록 소정 영역이 적출되어 형성되는 공간부를 구비하고, 상기 회전부재의 회전중심을 기준으로 상기 공간부를 규정하는 상기 풀링플레이트의 적출면 사이의 적출각도(θ)는 다음의 조건식을 만족할 수 있다. [조건식] 적출각도(θ)≤ 여기서, N은 회전부재에 구비되는 마그네트의 착자 극수 According to an embodiment of the present invention, a base assembly for a motor includes a base for a motor; And a pulling plate coupled to the base for the motor to prevent overloading of the rotating member of the motor, wherein the pulling plate is formed by removing a predetermined region to reduce noise generated during rotation of the rotating member And a separation angle? Between the surfaces of the pulling plate defining the space with respect to the center of rotation of the rotating member may satisfy the following conditional expression. [Conditional expression] extraction angle (?)? Here, N is the number of magnetic poles of the magnet provided on the rotating member

LOTELY FASTENED BEARING COLUMN FOR SPHERICAL PUMPS

Rotary anode X-ray tube with axial bearing

Es wird eine Drehanoden-Röntgenröhre mit einer axialen Lagerung beschrieben, die insbesondere zur Kombination mit einem radialen Spiralrillenlager geeignet ist. Ein Problem der bekannten axialen Magnetlager, die im allgemeinen zwei in Radialrichtung gerichtete und einander gegenüberliegende Zahnstrukturen umfassen, besteht darin, daß in der Anlauf- und Endlaufphase nicht unerhebliche Radialkräfte erzeugt werden, die insbesondere radiale Spiralrillenlager stark verschleißen können. Durch Anordnung von mindestens zwei magnetischen Elementen (50, 55), die in Axialrichtung so beabstandet und befestigt sind, daß sie axiale Lagerkräfte aufnehmen, wird ein Axiallager mit wesentlich geringeren Radialkräften und somit geringerer Belastung der Radiallager geschaffen. Eine weitere Lösung des Problems wird mit einem Axiallager in Form eines Kugeleinpunktlagers geschaffen. <IMAGE> A rotating anode X-ray tube with an axial bearing is described, which is particularly suitable for combination with a radial spiral groove bearing. A problem with the known axial magnetic bearings, which generally comprise two tooth structures directed in the radial direction and opposite one another, is that not inconsiderable radial forces are generated in the start-up and end-run phase, which can wear out particularly radial spiral groove bearings. By arranging at least two magnetic elements (50, 55) which are spaced and fastened in the axial direction in such a way that they absorb axial bearing forces, an axial bearing is created with significantly lower radial forces and thus less stress on the radial bearings. Another solution to the problem is created with a thrust bearing in the form of a ball single point bearing. <IMAGE>

A magnetic actuator for a magnetic suspension system

A magnetic actuator for a magnetic suspension system includes a core section having an annular yoke and radially directed teeth joining the yoke. The magnetic actuator includes coils surrounding the teeth and a mechanical structure having a first section and a second section. The first section is attached to the yoke and conducts magnetic flux axially. The second section joins the first section and conducts the magnetic flux radially in a direction opposite to a direction of the magnetic flux in the teeth. The magnetic actuator includes a mechanical safety bearing that is between the second section and the teeth. Thus, the safety bearing is in a room surrounded by a magnetic flux circulation path. Therefore, the safety bearing does not increase an axial length of the magnetic suspension system.

A rotation device supporting a polygon mirror

A rotation supporting device of a polygon mirror (33) comprising a stationary shaft provided with a shaft sleeve (27) around its circumference, a rotary assembly (R) rotatably mounted around the circumference of the shaft sleeve and having a radial circumferential surface of a polygon made to serve as mirror surfaces (M) and having a magnet member (47), thrust plates (29/30) for suppressing the motion of a rotary assembly in the axial direction. The rotary assembly comprises a first rotor (28) rotatably mounted at the outer circumference of the shaft sleeve (27), a second rotor (33) having a circumferential surface of a polygon made to serve as mirror surfaces and being disposed at the outer circumference of the first rotor, and a yoke (31) secured on the outer circumference of the first rotor. The first rotor is made of a ceramic material, the second rotor is made of aluminum and the yoke is made of steel. Radial dynamic pressure bearing is included between the outer circumference of the shaft sleeve and the rotary assembly. Dynamic thrust pressure bearings are included between the end surfaces of a rotary assembly and the thrust plates.

Prestressing structure for rotationally balancing a motor

A prestressing structure for rotationally balancing a motor includes a motor stator, a motor rotor, a magnetically conductive member and a balancing magnet. The motor stator has an axial hole and an axial tube extending therethrough. An end of the axial tube provides with the magnetically conductive member. The motor rotor has an inner surface and a shaft seat mounted thereon. A top portion of the shaft seat provides with the balancing magnet which has at least one surface successively attracting at least one surface of the magnetically conductive member for stabilizing rotary movement of the motor.

Fluid dynamic bearing device and motor with same

Provided is a fluid dynamic bearing device (1), including: a bearing member (22) on a rotary side, which is made of a porous material; a housing (7) on a stationary side, which is configured to receive the bearing member (22) on an inner periphery of the housing (7) ; a sealing member (9) configured to open an upper side of the bearing member (22) to atmosphere through a sealing gap (S) ; a radial bearing gap to be formed between an outer peripheral surface (22a) of the bearing member (22) and an inner peripheral surface (7a2) of the housing (7); and a thrust bearing gap to be formed between a lower end surface (22c) of the bearing member (22) and an inner bottom surface (7b1) of the housing (7). The radial bearing gap and the thrust bearing gap are filled with lubricating oil (11) . The bearing member (22) is supported respectively in a radial direction and a thrust direction by an oil film to be formed in the radial bearing gap and an oil film to be formed in the thrust bearing gap. An axial gap (10) containing air is formed between an upper end surface (22b) of the bearing member (22) and a lower end surface (9b) of the sealing member (9), which faces the upper end surface (22b) of the bearing member (22).

Spindle motor

A spindle motor which is designed to rotate with minimal vibrations and hence is suitable of a hard disk driver. The spindle motor employs hydrodynamic bearings as radial and thrust bearings. A support shaft is formed in a cylindrical configuration with a center hole, and a rotor has a columnar portion which is inserted into the center hole in the support shaft. A thrust bearing collar is attached to the lower end of the rotor, and a thrust bearing member is secured to a base in opposing relation to the thrust bearing collar. A group of stator coils and a radial bearing member are disposed on either the inner peripheral surface of the center hole in the support shaft or the outer peripheral surface of the support shaft, and a group of rotor magnets and a radial bearing sleeve are disposed on either the outer peripheral surface of the columnar portion or the inner peripheral surface of the rotor in opposing relation to the stator coil group and the radial bearing member.

Spindle motor

스핀들 모터의 기동시의 드러스트 동압 베어링면의 접촉 미끄럼 이동에 의한 마모를 방지하는 수단을 제공한다. It provides a means for preventing wear due to contact sliding of the thrust dynamic bearing surface at the start of the spindle motor. 모터 코일(7)을 권취 장착하는 스테이터(2a)를 구비한 스테이터 코어(2)의 축심 상의 상단부에, 외주면에 레이디얼 동압 발생 홈을 갖는 레이디얼 동압 베어링의 원주(4)와 상면에 드러스트 동압 발생 홈을 갖는 드러스트 동압 베어링의 원반(3)을 구비하고, 회전 부재로서의 허브(5)에 상기 레이디얼 동압 베어링의 원주(4)에 대면하는 내면이 평활인 원통(6)과 상기 모터 코일(7)에 대면하는 로터 마그넷(8)을 배치하고, 레이디얼 방향의 하중을 상기 레이디얼 동압 베어링에 의해 지지하고, 드러스트 방향의 하중을 상기 스테이터(2a)와 상기 로터 마그넷(8)에 의해 구성되어 있는 자기 베어링 및 상기 드러스트 동압 베어링을 병용하여 지지한다. In the upper end on the shaft center of the stator core 2 provided with the stator 2a which winds up the motor coil 7, the outer peripheral surface has the circumference 4 and the upper surface of the radial dynamic pressure bearing which has a radial dynamic pressure generating groove. A cylindrical cylinder 6 of the thrust dynamic bearing having a dynamic pressure generating groove, the cylinder 6 having a smooth inner surface facing the circumference 4 of the radial dynamic bearing to the hub 5 as the rotating member, and the motor. The rotor magnet 8 facing the coil 7 is disposed, the radial load is supported by the radial dynamic bearing, and the load in the thrust direction is supported by the stator 2a and the rotor magnet 8. The magnetic bearing comprised by the said and the said thrust dynamic bearing are used together, and are supported. 스테이터 코어, 스테이터, 원반, 스파이럴 홈, 원주, 허브, 원통, 모터 코일, 로터 마그넷 Stator core, stator, disc, spiral groove, cylinder, hub, cylinder, motor coil, rotor magnet

Passive magnetic bearings for rotating equipment including induction machines

Permanent magnet bearings are incorporated into rotating equipment, such as induction machines, in addition to active magnetic or lubricated primary shaft support bearings. The passive magnetic bearings incorporate permanent magnets that generate directionally oriented magnetic fields of selective intensity. The magnetic field directions are aligned with a desired shaft support bearing preload direction and intensity, for example to exert axial thrust or radial preloads on the support bearings. A plurality of magnetic bearings may be oriented in opposed relationship with neutral or offsetting resultant forces. The passive magnetic force preload may be utilized to offset rotor vertical weight during induction startup or stopping cycles. Passive magnetic force preload may be applied to lubricated bearings to assure their operational stability. The passive magnetic bearings can also absorb radial or axial thrust forces imparted on the rotor shaft during induction machine operation, that may reduce machine operational noise, and energy consumption

Rotary anode X-ray tube with an axial bearing arrangement

The invention relates to a rotary-anode X-ray tube which includes an axial bearing arrangement which is particularly suitable for combination with a radial spiral groove bearing. It is a problem of known axial magnet bearings, which generally comprise two tooth-like structures which are oriented in the radial direction and are oppositely situated, consists in that substantial radial forces are generated during the starting and the stopping phase, which radial forces can cause substantial wear of notably radial spiral groove bearings. An axial bearing which involves significantly lower radial forces and hence a less loading of the radial bearings, is realized by an arrangement of at least two magnetic elements which are spaced apart in the axial direction and are connected in such a manner that they take up axial bearing forces. A further solution to this problem is achieved by means of an axial bearing in the form of a single-point ball bearing.

Permanent magnetic motor having a magnetic axial bearing

A permanent magnetic motor having a magnetic axial bearing and one or more fluid bearings, wherein a stator unit is disposed on a baseplate, the stator unit being disposed opposite a magnet ring made up of permanent magnets and being separated from the magnet ring by an air gap, and the magnet ring is fixed to the inside circumference of a circumferential hub that is supported with respect to a bearing bush by means of the fluid bearings via a shaft, and at least one fluid dynamic axial bearing is preloaded with an axial attractive force component that is at least partly generated by a ferromagnetic pull ring that is fixed to the baseplate and disposed below the magnet ring and permeated by its field lines, characterized in that, seen magnetically, the stator unit is centered with respect to the magnet ring and has no significant axial offset and that the pull ring has no or only relatively low electrical conductivity at high magnetic permeability.

Spindle motor

Sealed bearing module

公开了一种潮汐涡轮机的密封的轴承模块(1)，潮汐涡轮机包括转子和转子轴，转子包括设置在转子毂上的转子叶片，转子轴承载转子，所述轴承模块用于将驱动扭矩从转子毂传递到机舱中的传动装置或发电机，其中，机舱包括壳体(4)，轴承模块(1)包括两个轴承圈(6、8)，其中，轴承圈(6、8)中的至少一个轴承圈为包括第一轴承圈部分(6‑1)和第二轴承圈部分(6‑2)的分体式轴承圈，其中，其中轴承圈中的一个轴承圈(8)包括在轴向上延伸的孔(12)，用于将轴承圈(8)直接附接到机舱的壳体(4)，轴承圈中的另一轴承圈(6)连接到转子轴(2)和/或转子毂，其中，分体式轴承圈(6)通过预加载元件(26、60)被预加载。

Electric motor with spherical rotor

Elektromotor umfassend einen Läufer (106), einen Stator (110) und ein Lager (136), durch welches der Läufer (106) sphärisch gelagert ist, wobei das Lager (136) eine Lagerschale (140) mit einem zentralen materialfreien Bereich (150) und einen in der Lagerschale gleitbar angeordneten kugelförmigen Gleitkörper (138) umfaßt und der Läufer (106) magnetfelderzeugend ausgebildet ist, dadurch gekennzeichnet, daß die Lagerschale (140) einen zentralen materialfreien Bereich (150) aufweist, welcher so ausgebildet ist, daß der Kraftvektor der vom kugelförmigen Gleitkörper (138) auf die Lagerschale (140) ausgeübten Gesamtgegenkraft (168) auf den zentralen materialfreien Bereich (150) gerichtet ist, wenn eine Asymmetrie zwischen Läufer (106) und Stator (110) vorliegt und daß ein Durchmesser (M) des zentralen materialfreien Bereichs (150) gleich oder größer ist als das 0,44-fache des Durchmessers (d) des kugelförmigen Gleitkörpers (138). electric motor comprising a runner (106), a stator (110) and a bearing (136) through which the rotor (106) spherical is stored, wherein the bearing (136) has a bearing shell (140) with a central material-free area (150) and one slidable in the bearing shell arranged spherical sliding (138) and the runner (106) is formed magnetic field generating, characterized that the Bearing shell (140) has a central material-free region (150), which is designed so that the The force vector of spherical sliding (138) total reaction force (168) exerted on the bearing shell (140) is directed to the central material-free area (150) when an asymmetry between runners (106) and stator (110) is present and that a diameter (M) of the central material-free area (150) is equal to or greater than 0.44-fold the diameter (d) of the spherical one sliding (138).

Spindle motor

Means to prevent wear from occurring due to a contact sliding of a thrust dynamic pressure bearing surface at the time of start of a spindle motor, wherein a cylindrical column (4) of a radial dynamic pressure bearing having a radial dynamic pressure generating groove in the outer peripheral surface thereof and a disk (3) of a thrust dynamic pressure bearing having a thrust dynamic pressure generating groove in the upper surface thereof are installed at the axial upper end of a stator core (2) having a stator (2a) with a motor coil (7) wound thereon, a cylinder (6) having a smooth inner surface facing the cylindrical column (4) of the radial dynamic pressure bearing and a rotor magnet (8) facing the motor coil (7) are disposed in a hub (5) as a rotating member, and a load in radial direction is supported by the radial dynamic pressure bearing and a load in thrust direction is supported by the combined use of a magnetic bearing comprising the stator (2a) and rotor magnet (8) and the thrust dynamic pressure bearing.

A magnetic actuator for a magnetic suspension system

A magnetic actuator for a magnetic suspension system comprises a core section (101) having an annular yoke (102) and radially directed teeth (103) joining the yoke. The magnetic actuator comprises coils (104) surrounding the teeth and a mechanical structure having a first section (105) and a second section (106). The first section is attached to the yoke and conducts magnetic flux axially. The second section joins the first section and conducts the magnetic flux radially in a direction opposite to a direction of the magnetic flux in the teeth. The magnetic actuator comprises a mechanical safety bearing (107) that is between the second section and the teeth. Thus, the safety bearing is in a room surrounded by a magnetic flux circulation path. Therefore, the safety bearing does not increase an axial length of the magnetic suspension system.

Fluid dynamic bearing device and motor with same

一种流体动压轴承装置，具备：旋转侧的轴承部件，其由多孔质材料形成；静止侧的壳体，其将轴承部件收容于内周；密封部件，其使轴承部件的上侧经由密封间隙向大气开放；径向轴承间隙，其形成在轴承部件的外周面与壳体的内周面之间；推力轴承间隙，其形成在轴承部件的下端面与壳体的内底面之间，径向轴承间隙以及推力轴承间隙被润滑油充满，通过形成于两轴承间隙的油膜在径向方向以及推力方向上对轴承部件进行支承，在轴承部件的上端面与同其对置的密封部件的下端面之间夹设有含有空气的轴向间隙。

Fluid bearing cylinder device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

DEVICE WITH AXIAL LAYERS WHICH STORAGE SITES INCLUDE MAGNETIC PARTIES

Spindle motor

A spindle motor has a rotor supported by a stator through a thrust bearing and a radial bearing. At least the thrust bearing is a hydrodynamic bearing. The spindle motor is provided with a device for adjusting the thrust laod that is applied to the thrust bearing. The load adjusting device has an electromagnet that is provided on the stator and a permanent magnet that is provided on the rotor in opposing relation to the electromagnet. Either the repelling force or the attraction force, which acts between the electromagnet and the permanent magnet, is controlled by changing the current supplied to the electromagnet.

SPINDLE MOTOR.

Spindle motor

A spindle motor comprising a stator (5) including a support shaft (2) positioned on a base, a cap-shaped rotor (6) rotatably and concentrically disposed around the support shaft, thrust and radial bearings (3, 4) disposed between the stator and the rotor, a stator coil (5) secured to the stator, and a rotor magnet member (6) secured to the rotor in opposing relation to the stator coil. The thrust and radial bearings are hydrodynamic bearings. A movable piece that constitutes a part of the thrust bearing is secured to the lower end of a cylindrical portion of the rotor and extended outwardly or inwardly from the cylindrical portion, or is disposed above the rotor. The stator coil (5) is secured to the outer peripheral portion of the support shaft above or below the radial bearing. The rotor magnet member (6) is secured to the inner peripheral surface or ceiling of the rotor. Either a radial or axial gap is provided between the stator coil and the rotor magnet member.

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A magnetic actuator for a magnetic suspension system

Doppelkreuzgelenk mit einer radial bewegbaren zentrierscheibe für die beiden kreuzgelenke

Electric motor

A motor comprising a motor frame (10, 11, 12), a moving coil armature (18, 19, 22) having a shaft (18) which is supported for rotation in the motor frame, and a thrust face (17) on one side of the armature, first and second magnets (33, 34) are mounted with like poles adjacent on the other side of the armature, magnet (33) with respect 10 the shaft and magnet (34) with respect to the motor frame so that repulsion forces between the magnets urge an end of the shaft 18a into contact with the thrust face 17. <IMAGE>

計時器用ムーブメントにおいてアーバーを回転させる磁気デバイス

Anordnung mit einem gleitlager

Elektrische Maschine

Die Erfindung betrifft eine elektrische Maschine mit einem Rotormagneten in Ringform, wobei die elektrische Maschine eine Basisplatte und ein relativ zur Basisplatte drehbar gelagertes Rotorbauteil aufweist, wobei der Rotormagnet zur Befestigung am Rotorbauteil der elektrischen Maschine ausgebildet ist und eine dem Rotorbauteil zugewandte Umfangsfläche und eine dem Rotorbauteil abgewandte und einer Statoranordnung zugewandte Umfangsfläche aufweist. Erfindungsgemäß weist der Rotormagnet auf seiner einem ferromagnetischen Ring axial zugewandten Seite eine größere radiale Breite auf als auf derjenigen axialen Höhe des Rotormagneten, in welcher der Rotormagnet der Statoranordnung radial gegenüberliegt. Anstelle des Rotormagneten kann ein Rückschlussring in der beschriebenen Weise ausgebildet sein.

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Motor de huso.

UN MOTOR DE DIRECCION CONSTA DE UN ESTATOR QUE INCLUYE UN EJE DE SOPORTE SITUADO SOBRE UNA BASE, UN ROTOR EN FORMA DE CAPERUZA DISPUESTO GIRATORIAMENTE Y CONCENTRICAMENTE ALREDEDOR DEL EJE DE SOPORTE, COJINETES DE EMPUJE Y RADIALES DISPUESTOS ENTRE EL ESTATOR Y EL ROTOR, UNA BOBINA DE ESTATOR ASEGURADA AL ESTATOR, Y UN MIEMBRO DE IMAN DE ROTOR ASEGURADO AL ROTOR EN RELACION OPUESTA CON LA BOBINA DEL ESTATOR. LOS COJINETES DE EMPUJE Y RADIALES SON HIDRODINAMICOS. UNA PIEZA MOVIL QUE CONSTITUYE UNA PARTE DEL COJINETE DE EMPUJE SE ASEGURA AL EXTREMO INFERIOR DE UNA PORCION CILINDRICA DEL ROTOR Y SE EXTIENDE HACIA AFUERA O HACIA ADENTRO DESDE LA PORCION CILINDRICA, O SE SITUA SOBRE EL ROTOR. LA BOBINA DEL ESTATOR SE ASEGURA EN LA PORCION PERIFERICA EXTERIOR DEL EJE DE SOPORTE ENCIMA O DEBAJO DEL COJINETE RADIAL. EL MIEMBRO DE IMAN DEL ROTOR SE ASEGURA EN LA SUPERFICIE PERIFERICA EXTERIOR O TECHO DEL ROTOR. SE PROPORCIONA BIEN UN ORIFICIO RADIAL O BIEN AXIAL ENTRE LA BOBINA DEL ESTATOR Y EL MIEMBRO DE IMAN DEL ROTOR.

Spindelmotor.

Circulating pump and method for the fluid lubrication of a spherical bearing in an electric motor

A circulating pump with an electric motor, which comprises a rotor and a stator, is proposed, the rotor being mounted on a spherical bearing which comprises a sliding body with a convex spherical surface and a bearing bushing with a concave spherical surface and which is fluid-lubricated, in which pump a flow system for passing lubricating fluid through a lubricating region between the sliding body and the bearing bushing is separate from a gap between the stator and the rotor.

Magnetic actuator for a magnetic suspension system

A magnetic actuator for a magnetic suspension system includes a core section having an annular yoke and radially directed teeth joining the yoke. The magnetic actuator includes coils surrounding the teeth and a mechanical structure having a first section and a second section. The first section is attached to the yoke and conducts magnetic flux axially. The second section joins the first section and conducts the magnetic flux radially in a direction opposite to a direction of the magnetic flux in the teeth. The magnetic actuator includes a mechanical safety bearing that is between the second section and the teeth. Thus, the safety bearing is in a room surrounded by a magnetic flux circulation path. Therefore, the safety bearing does not increase an axial length of the magnetic suspension system.

ティルティングパッド軸受

ティルティングパッド（５，５′）を有するティルティングパッド軸受（１）であって、前記ティルティングパッド（５，５′）が、該ティルティングパッド（５，５′）と回転体（２）との間に先細りした軸受ギャップ（１４）を生ぜしめるために、ハウジング体（４）に対して相対的に傾倒可能であり、前記ティルティングパッド（５，５′）がプリロード装置（１５）によって予圧をかけられている形式のものに関する。ティルティングパッド軸受をその機能および／または耐用年数に関連して改善するために、前記プリロード装置（１５）が磁石装置（１０）を有している。【選択図】 図１

Centered double universal joint

A centered double universal joint comprisesa housing having a first inner joint fork and a second inner joint fork,a first outer joint fork hingedly connected to the first inner joint fork via a first trunnion cross,a second outer joint fork hingedly connected to the second inner joint fork via a second trunnion cross,an annular recess in the housing disposed about a longitudinal axis of the housing,a guide disc that is guided in a radially adjustable manner in the annular recess of the housing,the two outer joint forks being coupled in an articulated manner to the guide disc, andtwo floating discs arranged in the axial direction on both sides of the guide disc in the annular recess,wherein the housing, the floating discs or the guide disc is/are magnetized, exerting a magnetic force on the floating discs in the direction of the longitudinal axis.

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循環ポンプ、及び電気モータの球面軸受を流体潤滑するための方法

【課題】 電気モータを有する循環ポンプのロータとステータの空隙に潤滑流体に含まれる異物が蓄積するのを防止する。 【解決手段】前記ロータは、凸状球面を有する滑動体と凹状球面を有する軸受ブッシングとを備え且つ自己流体で潤滑される球面軸受上に設置されるが、前記滑動体と前記軸受ブッシングとの間の潤滑領域に潤滑流体を通すためのフローシステムを設けることによって上記ステータと上記ロータとの間隙は流体から分離される。 【選択図】図１

电动机

一种电动机，将具有设置在定子部侧的大致圆筒状的环状立壁构件(17a)的磁性吸引构件(17)与所述转子磁铁(22d)同心状配置，立壁构件(17a)与转子部中环状形成的转子磁铁(22d)的圆周壁面在径向相对，由此，可将所述转子磁铁(22d)的磁通作为磁性吸力进行有效地利用。以简易和小型的结构，充分得到磁性吸引构件(17)所产生的磁性吸力。

Axial vibration prevention mechanism and brushless motor having the mechanism

Magnetic preloading of bearings in rotating machines

Magnetic device for pivoting an arbor of a rotating member in a timepiece movement

The device for pivoting an arbor of a rotating member, on a determined pivot axis, inside a timepiece movement includes at least one magnetic bearing including a magnet which exerts a force of attraction on a pivot made of magnetic material, of the arbor, and an endstone arranged between the magnet and the pivot, the endstone being formed of a material having a hardness greater than 500 HV and a friction coefficient less than or substantially equal to 0.1 with the material of which the pivot is made. The material forming the endstone has a high magnetic permeability and the endstone has, in cross-section to the pivot axis, smaller dimensions than those of the magnet, said endstone being arranged in the timepiece movement to be centred on the determined pivot axis.

ラジアル軸受及びスラスト軸受を備えたスピンドルモータ

【課題】軸受摩擦を低減し、これによりモータの消費電力を低減することができる軸受装置を備えたスピンドルモータを提供すること。 【解決手段】スピンドルモータは、ラジアル軸受及びスラスト軸受によって相対回転可能に支持された固定部と回転部とを有し、ラジアル軸受が流体軸受で構成され、回転部が電磁駆動装置により駆動される。スラスト軸受は、磁気軸受で構成されており、この磁気軸受は、磁気的な予圧に対して反対方向の力を発するよう構成されている。 【選択図】図１

Kippsegmentlager mit

Die Erfindung betrifft ein Kippsegmentlager (1) mit Kippsegmenten (5,5'), die relativ zu einem Gehäusekörper (4) kippbar sind, um zwischen den Kippsegmenten (5,5') und einem Rotorkörper (2) konvergente Lagerspalte (14) zu erzeugen, und die durch eine Vorspanneinrichtung (15) vorgespannt sind. Um ein Kippsegmentlager im Hinblick auf seine Funktion und/oder Lebensdauer zu verbessern, umfasst die Vorspanneinrichtung (15) eine Magneteinrichtung (10).

可倾瓦轴承

本发明涉及一种具有可倾瓦块(5，5‘)的可倾瓦轴承(1)，所述可倾瓦块能够相对于壳体本体(4)倾斜，以便在所述可倾瓦块(5，5‘)和转子体(2)之间产生收敛的轴承间隙(14)，并且所述可倾瓦块通过预紧装置(15)预紧。为了在其功能和/或使用寿命方面改善可倾瓦轴承，所述预紧装置(15)包括磁体装置(10)。

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可倾瓦轴承

本发明涉及一种具有可倾瓦块(5，5‘)的可倾瓦轴承(1)，所述可倾瓦块能够相对于壳体本体(4)倾斜，以便在所述可倾瓦块(5，5‘)和转子体(2)之间产生收敛的轴承间隙(14)，并且所述可倾瓦块通过预紧装置(15)预紧。为了在其功能和/或使用寿命方面改善可倾瓦轴承，所述预紧装置(15)包括磁体装置(10)。

틸팅 패드 베어링

본 발명은, 틸팅 패드들(5, 5')과 회전자 몸체(2) 사이에서 수렴하는 베어링 간극(14)을 형성하기 위해 하우징 몸체(4)에 대하여 틸팅 가능하고 초기 응력 장치(15)를 통해 초기 응력이 가해지는 틸팅 패드들(5, 5')을 구비한 틸팅 패드 베어링(1)에 관한 것이다. 틸팅 패드 베어링을 그 기능 및/또는 수명과 관련하여 개선시키기 위해, 초기 응력 장치(15)는 자기 장치(10)를 포함한다.

散热风扇

一种散热风扇，包括一扇框、一转子构件、一定子构件及一轴承系统，该扇框的中央突设形成一轴座，该定子构件套设于轴座的外缘，该轴承系统位于轴座内，其包括一轴承，该转子构件具有穿设该轴承内部的一转轴，该转轴的顶端和底端的至少其中一端从外表面向内凹陷形成一凹槽，该轴承系统还包括至少一磁吸件，该至少一磁吸件部分对正该至少一凹槽的上半段而环设于转轴外围，在磁吸件与转轴之间形成一环形空间。该散热风扇利用磁吸件的磁吸力，以持续吸引转轴，维持转子构件转动的平衡。

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用于磁悬浮系统的磁致动器

一种用于磁悬浮系统的磁致动器，所述磁致动器包括核心部分(101)，所述核心部分具有环形轭(102)和连结所述轭的径向指向齿(103)。所述磁致动器包括线圈(104)和机械结构，所述线圈包围所述齿，所述机械结构具有第一部分(105)和第二部分(106)。所述第一部分附接到所述轭并且轴向地传导磁通量。所述第二部分与所述第一部分连结并且在与所述齿中的磁通量方向相反的方向上径向地传导磁通量。所述磁致动器包括处在所述第二部分和所述齿之间的机械安全轴承(107)。因此，所述安全轴承位于被磁通量循环路径包围的空间中。因此，所述安全轴承不会增加所述磁悬浮系统的轴向长度。

Kippsegmentlager mit

Die Erfindung betrifft ein Kippsegmentlager (1) mit Kippsegmenten (5,5'), die relativ zu einem Gehäusekörper (4) kippbar sind, um zwischen den Kippsegmenten (5,5') und einem Rotorkörper (2) konvergente Lagerspalte (14) zu erzeugen, und die durch eine Vorspanneinrichtung (15) vorgespannt sind. Um ein Kippsegmentlager im Hinblick auf seine Funktion und/oder Lebensdauer zu verbessern, umfasst die Vorspanneinrichtung (15) eine Magneteinrichtung (10).

高速燃油齿轮泵用浮动轴承

本发明属于齿轮泵技术领域，涉及一种高速燃油齿轮泵用浮动轴承。该高速燃油齿轮泵浮动轴承包括轴承本体，在轴承本体上设有与齿轮端面配合的止推面一，在轴承本体上还设有与止推面一平行的台阶面，台阶面上设有多个磁块，轴承本体上还设有安装面，安装面是轴承本体外周面的一部分，且与止推面一垂直。本发明能使浮动轴承轴向受力均匀，磨损后能自动补偿，可以有效减少齿轮泵的泄漏，提高齿轮泵的容积效率，延长浮动轴承的使用寿命。

Bearing arrangement and orthopaedic device having same

The invention relates to a bearing arrangement having a radial spherical plain bearing with an inner ring (10), which is arranged on a bolt (15) or pin and has a spherical outer contour (12), and with an outer ring (20), which has a hollow spherical inner geometry (22) for receiving the inner ring (10) and an outer geometry (21) for mounting in a bearing seat (30), wherein the inner ring (10) and the outer ring (20) are preloaded against one another in an axial direction via at least one preloading device (41, 42).

Thrust bearing

Aufbau eines rotierenden polygonspiegels.

Spindelmotor.

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모터용 베이스 어셈블리 및 이를 포함하는 스핀들 모터

본 발명의 일 실시예에 따른 모터용 베이스 어셈블리는 모터의 회전부재의 회전을 지지하는 베이스; 및 상기 베이스에 구비되어 상기 회전부재의 과부상을 방지하는 풀링플레이트;를 포함하며, 상기 풀링플레이트는 상기 베이스와 비접촉되는 바디부 및 상기 바디부로부터 연장되어 상기 베이스와 접촉되는 연장부를 구비할 수 있다.

Base assembly for motor and spindle motor including the same

There is provided a base assembly for a motor, the base assembly including: a base supporting rotation of a rotating member of the motor; and a pulling plate provided to the base to thereby prevent excessive floating of the rotating member, wherein the pulling plate includes a body part not in contact with the base and an extension part extended from the body part to thereby contact the base.

計時器用ムーブメントにおける回転メンバーのアーバーを回転させる磁気デバイス

Kippsegmentlager mit vorspanneinrichtung

离心泵电动机推力轴承

一种具有球形滑动表面的离心泵电动机推力轴承，其固定安装的陶瓷圆球安装在支柱上；在工作情况下，带有凹形帽的电磁转子在该轴承上旋转着。运行期间，带有帽的转子由磁性推力压向支柱，而当与该磁性推力反向的轴向推力变为高于该磁性推力时，该转子的第二环形轴承部件阻止该帽的轴向运动。

流体动压轴承装置

一种流体动压轴承装置，在稳定旋转时将2处的轴向推力轴承部(SBa、SBb)中轴承间隙较小侧的轴向推力轴承部(SBb)中的动压产生用槽的深度形成得比另一方的轴向推力轴承部(SBa)中的动压产生用槽的深度较浅，并且，第2面对构件(16)由硬度比第1面对构件(13)高的材料构成，同时设置规定的施力装置，使轴向推力板(23)始终从第2轴向推力轴承部侧(SBb)上浮。本发明具有在轴向推力动压轴承部中容易产生所需足够的动压力及减少轴向推力动压轴承部的磨损的优点。

用于磁悬浮系统的磁致动器

一种用于磁悬浮系统的磁致动器，所述磁致动器包括核心部分(101)，所述核心部分具有环形轭(102)和连结所述轭的径向指向齿(103)。所述磁致动器包括线圈(104)和机械结构，所述线圈包围所述齿，所述机械结构具有第一部分(105)和第二部分(106)。所述第一部分附接到所述轭并且轴向地传导磁通量。所述第二部分与所述第一部分连结并且在与所述齿中的磁通量方向相反的方向上径向地传导磁通量。所述磁致动器包括处在所述第二部分和所述齿之间的机械安全轴承(107)。因此，所述安全轴承位于被磁通量循环路径包围的空间中。因此，所述安全轴承不会增加所述磁悬浮系统的轴向长度。

心脏泵

一种心脏泵(1)，包括心脏泵壳体(7)、心脏泵转子(8)和轴承组件(23)，所述轴承组件(23)构造成支撑所述心脏泵壳体(7)内的所述心脏泵转子(8)以围绕所述转子(8)的旋转轴线(A‑A)旋转，其中所述心脏泵转子(8)包括具有围绕所述旋转轴线(A‑A)的旋转变化的末端轮廓。

一种可调节预置阻尼扭矩的永磁阻尼滑动轴承

一种可调节预置阻尼扭矩的永磁阻尼滑动轴承，包括配合套装的轴承内圈和轴承外圈，轴承内圈和轴承外圈的接触面包括一段圆锥面，轴承内圈的中心处开设有轴承内孔，所述轴承外圈的轴向长度大于所述轴承内圈的轴向长度，轴承外圈内壁上靠近圆锥面小端的部分螺纹连接有端盖，端盖固定连接有朝向轴承内圈的永磁体，并且永磁体与轴承内圈之间留有磁力调节间隙。本发明提供一种可调节预置阻尼扭矩的永磁阻尼滑动轴承，可以对预置阻尼扭矩进行调节，扩大了同一轴承的应用范围，而且具有磨损后自动补偿的功能，可以保持所产生阻尼扭矩的稳定性和回转精度的一致性。

可倾瓦轴承

本发明涉及一种具有可倾瓦块(5，5‘)的可倾瓦轴承(1)，所述可倾瓦块能够相对于壳体本体(4)倾斜，以便在所述可倾瓦块(5，5‘)和转子体(2)之间产生收敛的轴承间隙(14)，并且所述可倾瓦块通过预紧装置(15)预紧。为了在其功能和/或使用寿命方面改善可倾瓦轴承，所述预紧装置(15)包括磁体装置(10)。