Abstract: The invention relates to an apparatus for holding an electrical machine (1) such that it is decoupled from vibration, which electrical machine (1) has a pole housing (3) and a machine flange, between which at least one vibration-decoupling element (7) is arranged, which rests on at least one contact surface (11) of the pole housing (3) and/or motor flange (4) and has a shape similar to a sphere, at least in places. The invention provides for the shape of the contact surface (11) to be matched to the shape which is similar to a sphere.

Abstract: A rotary electric machine, for solving problems that a space for installing the noise insulation enclosure around the rotary electric machine and a base for installing the noise insulation enclosure are necessary, and that the noise insulation enclosure reducing the noise on an outer side of the noise insulation enclosure does not reduce the noise on an inner side thereof, and the inspecting worker entering thereinto is exposed to a loud noise of the rotary electric machine, the rotary electric machine comprising a stator frame having a stator iron core incorporating a stator coil therein in an inner portion thereof, and a rotor in which a rotor coil rotating so as to oppose to the stator frame and the stator iron core is incorporated, further comprising a noise insulation plate fixed to a noise insulation plate attaching seat welded to an outer surface of the stator frame by a bolt and a nut, an elastic body which is provided in a contact portion between the noise insulation plate attaching seat and the nois

Abstract: A magnetic induction data transmission network comprising a master hub, at least one sensor node communicatively coupled to the master hub and a magnetic induction coil preferably adapted to be worn about a bodypart of a subject such as an individual's waist or neck. In at least one embodiment of the invention, the magnetic induction coil preferably includes a connector which serves as an intermediary between the coil and the hub to allow data communication.

Abstract: A rotor for an electromotor using permanent magnets is provided. The rotor may include one or more C-type permanent magnets, a core, and a rotor shaft. Each of the one or more C-type permanent magnets may have a C shape and provide magnetic force. The core may be of a cylindrical shape and have the one or more C-type permanent magnets coupled thereto with different magnetic poles. An aperture 11 may be formed at each of the boundaries of the C-type permanent magnets having the different magnetic poles. The rotor shaft may be formed at the center of the core. Cogging torque can be reduced because a magnetic field of the C-type permanent magnets coupled through the outside core forms a normal sine wave form.

Abstract: A resolver fixing structure which does not cause distortion at a resolver stator is provided. The resolver fixing structure arranged between coil ends of a stator constituting a rotating electrical machine includes a ring portion as a base member having a hole, and a resolver stator press-fitted into the hole. The resolver stator has an outer circumferential portion provided with a shield member coming into contact with the hole.

Abstract: A spindle motor is provided. The spindle motor includes a base, a bearing housing, a bearing, a rotation shaft, a stator, a bushing, and a rotor. The bearing housing is installed on the base. The bearing is fixed inside the bearing housing. The rotation shaft is installed to be supported by and rotate on the bearing. The stator is disposed around the bearing housing. The bushing is coupled to the rotation shaft. The rotor is coupled to the bushing to rotate through interaction with the stator.

Abstract: A space for accommodating therein a portion of an optical pickup mechanism is arranged below a disk loading portion of a turn table member of a chucking mechanism of the present invention. The space is arranged axially below a disk mounting surface. Since such space is provided, a recording/reproducing portion will be allowed to move closer to a brushless motor, and therefore a second lens arranged further away from the brushless motor will be allowed to move radially inward of a recording/reproducing area of an optical disk.

Abstract: A disc driving motor of the invention includes a base, a hub having a ring-shaped disc receiving face on which a disc is placed, a hydrodynamic bearing rotatably supporting the hub, a motor unit mounted on the base, the motor unit having an outer diameter larger than that of the disc receiving face and applying a rotational force to the hub, and a magnetic shield plate disposed on an axial clearance formed between the disc and the motor unit when the disc is placed on the disc receiving face. The magnetic shield plate has an opposed face opposed to the disc when the disc is placed on the receiving face, the opposed face being inclined toward the disc receiving face.

Abstract: In an electric motor of an SBW actuator, a rotor shaft is rotated upon energization of the motor. A rotor core is rotated integrally with the rotor shaft. A resilient member enables tilting or decentering of the rotor shaft upon application of a decentering force on the rotor shaft. A stator core contacts the rotor core when the rotor shaft is tilted or decentered.

Abstract: The invention provides for a motor attachment assembly that includes an electric motor having spring clips adapted to securely lock onto the isolation posts of a plastic post vibration isolation system. The motor includes an end cap that has notches which cooperate with locator tabs of the motor housing to lock the cap onto the housing with the spring clips therebetween. Each clip includes an axial slot that is expandable in an open direction to receive an isolation post and biased in the closed direction to retain the isolation post. Each clip also has an inner surface with barbs protruding into the channel to allow insertion of the isolation post into the channel in the direction of the output shaft and to resist movement of the isolation post in a direction opposite to the output shaft. The inner surface has a retention groove to receive plastically deformed portions of the isolation post.

Abstract: Disclosed herein is a spindle motor. The spindle motor includes a rotating shaft, a rotor cover which is secured to the rotating shaft and rotates the rotating shaft, a bearing for rotatably supporting the rotating shaft, a holder for holding the bearing, and a holding magnet which is directly mounted to an inner wall of the rotor cover. In this case, the holding magnet is positioned above the bearing to prevent oil from being discharged from the bearing to the outside.

Abstract: An axial gap type motor/generator is provided with a stator, a rotor and an alternating current control device. The alternating current control device executes alternating current control of a single phase or multiple phase alternating current flowing in the coils. The alternating current control device includes a superpositioning control section and a frequency component control section. The superpositioning control section produces the alternating current by superpositioning a plurality of frequency components including a first order fundamental wave component and a plurality of higher harmonic wave components that have frequencies equal to integer multiples of a frequency of the fundamental wave components and are of orders that are equal to values of the integer multiples. The frequency component control section controls a relationship among the frequency components such that two pairs of the frequency components whose orders differ by two are aligned with respect to each other.

Abstract: An airtight-type electric motor capable of reducing vibration is provided. Inside ribs of a pair of end brackets and are respectively fitted into core end portions of a stator core. Outside ribs of the pair of end brackets and are respectively brought into contact against end surfaces of the core end portions of a yoke of the stator core. With this arrangement, the pair of end brackets and are fixed to the stator core, and a housing and the stator core are arranged, without being coupled together.

Abstract: A motor includes a base, a stator mounted to the base, a rotor rotatably coupled to the base, and a balancing member. The rotor includes a permanent magnet having a first magnetically conductive face with a first width in a radial direction. The balancing member includes an upper surface facing the permanent magnet. A magnetically conductive section is formed between the upper surface and the first magnetically conductive face. The balancing member further includes a magnetically attracting portion in the magnetically conductive section. The magnetically attracting portion includes a second magnetically conductive face having a second width in the radial direction. The second width is not greater than the first width. A magnetically attracting spacing is formed between the first and second magnetically conductive faces and in a range of 0.2-1.5 mm.

Abstract: The present invention relates generally to loud disturbing noise accompanied with uncontrollable vibrations and, sound wave vibrations made from electric motor appliances such as blenders. Abstract: An electric motor design housing, filled with qualified sound deadening and temperature absorbing material, where in this case, the small electric motor of a blender operates in said invention, which is a designed motor housing filled with qualified sound deadening and temperature absorbing material, greatly reducing noise and vibration when appliance is used in operation mode.

Abstract: An electric motor, including stator core, a shaft, and a shock-absorbing connector including multiple brackets, and a rubber pad. The stator core and the shaft are disposed between the brackets, the shaft is nested in the stator core but not directly mechanically-connected thereto, tightly abuts against the bracket, and passes through the stator core. A through hole is disposed in the stator core and parallel to the shaft, and the rubber pad is received in the through hole.

Abstract: In a noise suppression structure of a blower motor according to the present invention, a noise reduction member is disposed inside of a peripheral wall part of an end bracket member in such a manner that the noise reduction member is located in a position opposite side of the peripheral wall part to which a connector part is provided, a metal terminal member extended from the connector part has an extension part extendedly provided along a bottom surface part of the end bracket member in a circumferential direction thereof, and the extension part of the metal terminal member has a connection part to which the noise reduction member is connected.

Abstract: An electric motor assembly in a vehicle powertrain is provided with a generally annular stator fit within an interior cavity of the powertrain defined by a housing. Roll pins are fit between the housing and the stator. The stator may have a plurality of first geometric features and the housing a plurality of second geometric features. The first geometric features are be configured to align with the second geometric features when the stator is fit within the cavity, with the roll pins fit between the housing and the stator at the aligned first and second geometric features. A method of assembling the electric motor assembly is also provided.

Abstract: A permanent magnet motor is provided. The permanent magnet motor includes a stator having a stator shaft having an outer surface, K salient teeth formed upon the outer surface, and K winding slots formed among the K salient teeth, and a rotor having a first inner surface facing the outer surface, and P pairs of permanent magnets formed on the first inner surface, each of which has a second inner surface facing the outer surface and at least a groove formed on the second inner surface to reduce a cogging torque.

Abstract: A bearing assembly particularly suitable for the rotor arrangement of an electrical motor or generator includes a bearing located in a housing. The bearing has an inner race, an outer race, and a plurality of ball bearings between the inner and outer races. A portion of the housing is made up of a deformable flexible wall which permits the housing to conform to the shape of the outer race member, rather than forcing the outer race to conform to the shape of the housing, as was experienced hitherto.

Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).

Abstract: A thrust yoke is fixed into a second recessed portion of a base with adhesive. The second recessed portion has a first surface to be in contact with the bottom surface of the thrust yoke, and a second surface axially opposing the bottom surface of the thrust yoke with a gap therebetween. The thrust yoke has a bent portion at its radial end. The bent portion is bent downward. The thrust yoke also has a protruding portion extending downward from the bent portion. The protruding portion axially opposes the second surface of the second recessed portion of the base with a gap therebetween.

Abstract: A fan (100) has an electronically commutated drive motor (ECM 52) with a stator (50) connected to a bearing tube (54) and a rotor (22) on a shaft (34). The shaft (34) is journaled in the tube (54) using passive radial magnetic bearings (16, 18) to minimize friction and wear, is axially displaceable with respect to the tube (54), and is drivingly connected to a rotor magnet (44) forming a first magnetic yoke (46). A second magnetic yoke (27) is connected to the shaft (34), and has an inner surface (59) defining a substantially cylindrical air gap (57) through which, during operation, a radial magnetic flux (55?) extends. A plunger coil (64) extends into the air gap (57) and is mechanically connected to the tube (54) so that, upon axial displacement of the plunger coil (64), the position of the shaft (34) with respect to the tube (54) changes.

Abstract: In an arrangement for a power electronics unit in a HEV, the HEV including a combustion engine, an electric motor/generator, a transmission, the power electronics unit is shaped as a plate. The plate is extended along a transmission side, the power electronics unit is fixed to the power train with a first attachment point. All attachment points have a total thermal conductivity corresponding to more than 10 degrees temperature difference on a Kelvin-scale between the power electronics unit and outside surface of said first transmission side and/or outside surface of the motor/generator for 5 kW of heat originating from one side of said attachment point. Embodiments also including sound damping capabilities are disclosed. The arrangement facilitates use of fewer parts and increased functionality.

Abstract: A spindle motor is provided. The spindle motor includes a base, a bearing housing, a bearing, a rotation shaft, a stator, a bushing, and a rotor. The bearing housing is installed on the base. The bearing is fixed inside the bearing housing. The rotation shaft is installed to be supported by and rotate on the bearing. The stator is disposed around the bearing housing. The bushing is coupled to the rotation shaft. The rotor is coupled to the bushing to rotate through interaction with the stator.

Abstract: A motor includes a base, a stator mounted to the base, a rotor rotatably coupled to the base, and a balancing member. The rotor includes a permanent magnet having a first magnetically conductive face with a first width in a radial direction. The balancing member includes an upper surface facing the permanent magnet. A magnetically conductive section is formed between the upper surface and the first magnetically conductive face. The balancing member further includes a magnetically attracting portion in the magnetically conductive section. The magnetically attracting portion includes a second magnetically conductive face having a second width in the radial direction. The second width is not greater than the first width. A magnetically attracting spacing is formed between the first and second magnetically conductive faces and in a range of 0.2-1.5 mm.

Abstract: In a spindle apparatus for a machine tool, a spindle is supported on a housing by support-purpose bearing devices, and is rotated by an electric motor, and a tool is attached to a tool attaching portion formed at a distal end of the spindle. A radial magnetic bearing for vibration suppressing purposes which includes a plurality of electromagnets is provided around the tool attaching portion of the spindle. A plurality of radial displacement sensors for detecting a displacement of the tool attaching portion in radial directions are provided around the tool attaching portion. There is provided an electromagnet control unit for controlling the electromagnets of the radial magnetic bearing on the basis of outputs of the radial displacement sensors so as to support the tool attaching portion in a predetermined position.

Abstract: A motor, including at least a stator core (1), a shaft (2) nested around the stator core (1), and shock-absorbing connector, wherein the shock-absorbing connector is disposed between the stator core (1) and the shaft (2) so as to absorb and buffer unbalanced counterforces acting on the stator core (1) and to dampen the shocks experienced by the shaft (2) and reduce the overall noise generated by the motor.

Abstract: A mechanical transmission system for a rotorcraft, including a supercritical transmission shaft and an active magnetic damper secured to the structure of the rotorcraft via a mechanical damper is provided.

Abstract: An electric machine for deployment in a vehicle, with the electric machine having a housing is provided. The electric machine comprises a stator assembly coupled to the housing, and a rotor assembly disposed within the stator assembly and configured to rotate relative thereto. A balance ring is coupled to an end of the rotor assembly and is configured to rotate therewith.

Abstract: An oscillation damping system for stator windings is provided which includes a supporting component of an end winding. The supporting component is equipped with damping elements, which are arranged asymmetrically in the circumferential direction in order to suppress excited natural oscillations. Masses or springs and screw-type restraints which connect the supporting component to the stator housing are suitable as damping elements.

Abstract: A rotor assembly for an electronic machine such as a motor includes a rotor on a shaft having a bearing at each end portion, the bearings being arranged to rotatably support the rotor and shaft. The assembly further includes a balancing member, from which material may be removed for balancing the rotor assembly. The balancing member is located in a predetermined position and orientation with respect to the rotor. The balancing member includes an encoder disk, arranged to permit positioning of the rotor with respect to a stator. The provision of a balancing member having an integral encoder disk facilitates the manufacture of the rotor assembly. As the balancing member is located in a predetermined position, the encoder automatically assumes a predetermined position and hence the position of the rotor can be determined with certainty.

Abstract: When a bracket to which an electric motor for wipers has been attached is attached to a vehicle body via a rubber mount therebetween for antivibration, vibrations generated when the electric motor is actuated are prevented from being transmitted to the body while allowing a part not tightened with a nut to act as a free end. A part of the rubber mount being in contact with the body is formed as a truncated cone part tapered toward a front edge so that the front edge of the rubber mount being in contact with the vehicle body does not have a part not tightened with the nut. As a result, there is no part that is not tightened with the nut and that acts as a free end, and the function to prevent vibrations from being transmitted is further improved.

Abstract: A motor is disclosed. The motor can include a shaft, a bearing that rotatably supports the shaft, a rotor that is coupled to the shaft and to which at least one magnet is coupled, a stator having one side facing the magnet, a base supporting the bearing, and an attachment portion interposed between the base and one side of the stator. The spindle motor may be used to firmly secure the stator to the base, while minimizing the transfer of vibrations from the stator to the base to improve the noise and vibration properties of the spindle motor.

Abstract: A DC motor (1), in particular for a blower device of a motor vehicle, having a pole housing (10), a plurality of contact elements (13) effecting the bonding to a collector (12), a pole housing opening (16) making it possible to feed electrical connection lines (18) through into the pole housing (10), and an interference suppressor (28, 28.1) serving to reduce and/or eliminate line-conducted electrical interference signals, in which the interference suppressor (28, 28.1) has at least one leadthrough capacitor (48), which is located in an electrical path of at least one connection line (18). The invention further relates to an electrical interference suppressor (28, 28.1) for an electrical device located in a housing, in particular for a DC motor (1) in a pole housing (10), as well as to the use of a leadthrough capacitor (48, 48.1) for interference suppression in a DC motor (1).

Abstract: An object of the present invention is to provide a direct drive motor in a washing machine, in which a structure of a driving unit in a washing machine is improved to improve processability, and current flow down to the washing shaft is cut off even if insulation between the winding portion of the stator and the rotor is broken, for preventing accidents caused by negligence of safety from taking place.

Abstract: A superconducting motor apparatus includes a superconducting motor including a superconducting coil and a mover movable on a basis of a movable magnetic field generated by the superconducting coil when an electric power is supplied thereto, a container defining an outer vacuum heat insulation chamber that covers an outer side of the superconducting motor, an extremely low temperature generating portion cooling the superconducting coil of the superconducting motor to a temperature equal to or smaller than a critical temperature of the superconducting coil, and a vibration damping element restraining one of or both of a vibration of the superconducting motor and an external vibration from being propagated to the extremely low temperature generating portion.

Abstract: In a brushless motor, a stator includes an annular core member. A rotatable shaft is placed radially inward of the core member and extends in an axial direction. A rotor is supported by the rotatable shaft. A centerpiece supports the core member and includes a center portion, which is placed radially inward of the core member. A platy vibration absorbing member connects between the core member and the center portion of the centerpiece and damps circumferential vibrations transmitted from the core member.

Abstract: A resolver stator portion is attached to a resolver stator portion side attaching portion formed at a position facing to a resolver rotor portion via an elastic ring. Thus, it is possible to absorb a dimensional error of the resolver stator portion side attaching portion on the basis of an elastic deformation of the elastic ring even in the case that the dimensional error is generated in the resolver stator portion side attaching portion.

Abstract: A rotor assembly comprising: an inner rotor and an outer rotor for rotating in a magnetic field of a motor, the inner rotor comprising a main inner rotor cavity, and a plurality of first holes being formed between the inner rotor and the outer rotor; two side boards, each side board having a main side board cavity, and being perforated by a plurality of second holes; two damping elements each damping element comprising a main damping element cavity; a plurality of rubber sleeves, each rubber sleeve having a rubber sleeve lip; and a plurality of third holes; an axle; and a plurality of positioning pins.

Abstract: An electric motor, e.g., a fan motor for an air conditioning fan of a motor vehicle, includes a receiving housing serving as a motor housing, which has a receiving opening into which the electric motor at least partially extends, as well as including connection elements for supplying power to the electric motor, and attachment means for the electrical connection elements. The attachment for the electrical connection elements is provided on the electric motor.

Abstract: In a rotating electric machine, a path length between a rotor and an inter-hetero-phase tooth where a magnetic flux from a magnetic pole proceeds from the rotor and starts to enter the inter-hetero-phase tooth is longer than a path length between the rotor and an inter-V-phase tooth where the magnetic flux proceeds from the rotor and starts to enter the inter-V-phase tooth.

Abstract: A motor assembly (20) includes a motor (22) and an end cap (26). The end cap (26) includes an electrically insulating body (28) having a peripheral edge (30) that interfaces with a conductive housing (24) of the motor (22). Motor terminals (94, 102) and an electromagnetic suppression (EMD) chip device (54) are located within the body (28). The chip device (54) has an input terminal (74) in electrical communication with the motor terminal (94), an input terminal (76) in electrical communication with the motor terminal (102), and an earth terminal (78). A conductive ground strap (56) is in electrical communication with the earth terminal (78). The ground strap (56) encapsulates and retains the chip device (54) in the end cap (26) and has an end (60) fitted onto the peripheral edge (30) of the end cap (26) between the end cap (26) and the conductive housing (24) of the motor (22).

Abstract: An automatic balancing apparatus is disclosed. The automatic balancing apparatus includes a plurality of magnets, magnetic fluid, and a rotatable housing. The magnets function as balancers. The rotatable housing has a moving path disposed along a peripheral direction of the rotation. Each of the magnets is moved through the moving path. The rotatable housing accommodates the magnets and the magnetic fluid.

Abstract: A spindle motor is disclosed that is capable of mitigating vibration caused by eccentricity of a disk and a turn table due to optimization of a cross-sectional area occupied by balls relative to that of a space in which the balls are stored.

Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.

Abstract: The invention provides damping techniques for a rotating shaft. The rotating shaft is supported by rotary bearings. The damping techniques control vibration of the rotating shaft by creating a fluid film in a support element of the rotating shaft. For example, the fluid film may be created between a housing and the rotary bearings. The fluid may be supplied by a pump, and the supply amount of fluid to create the fluid film is relative to the rotational velocity of the shaft. Vibration can be prevented for every operational rotational velocity of the rotating shaft. In some embodiments, the rotating shaft may be powered by or part of an electric motor for a vehicle.

Abstract: A generator may incorporate a positively restrained balance ring. A generator may include a rotor core including a rotor, and a balance ring. The balance ring may include a weight. The balancer may include a plurality of balance holes in the ring, at least one of the plurality of balance holes to receive a weighted insert. A method of balancing a rotor of a generator may include mounting a balance ring adjacent to a rotor core, and adjusting weights to be located at one or more of a plurality of positions equally spaced around the balance ring to balance the rotor.

Abstract: A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole root (53), and on a circumference of the claw-pole rotor (20), claw poles (28, 29) of the pole wheels (26, 27) are located in alternation, and located between the claw poles or interstices (90), and a claw pole (28, 29) has a radially outward-oriented cylindrical-jacketlike surface (43), by which a pivot axis (65) is defined, and a chamfer (68) extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (28 and 29, respectively), wherein the chamfer (68) has a center portion m in the edge direction that intersects a transition plane (59) which demarcates the pole root (53) and the freely projecting part of the claw pole (28 and 29, respectively), and the center portion m amounts to 8/10 of the length, oriented in the edge direction

Abstract: The invention relates to a device for mounting an electric motor (10) in a manner that isolates vibrations, in particular a fan motor, wherein the electric motor (10) features at least one pole housing (12, 14) serving as a magnetic yoke circuit, as well as means (26, 27) for fastening isolating elements (32, 33), in particular elastic isolating elements. In accordance with the invention it is proposed that the means (26, 27) for fastening the isolating elements (32, 33) are embodied to be a single piece with the pole housing (12, 14).