Abstract: A motor assembly has an enhanced retention system for minimizing axial and radial movement of the bearings and output shaft. A front endbell assembly is fixed to a front end of the motor, the front endbell assembly including a plastic front endbell and a front bearing assembly through which a driving end of the output shaft extends. The plastic front endbell is over-molded about the front bearing assembly and elasticity of the plastic front endbell operates to preload the front bearing assembly to restrict axial movement of the front bearing assembly. Similarly, a rear endbell assembly is fixed to a rear end of the motor opposite from the front end, the rear endbell assembly including a plastic rear endbell and a rear bearing assembly into which a rear end of the output shaft extends. The plastic rear endbell is over-molded about the rear bearing assembly and elasticity of the plastic rear endbell operates to preload the rear bearing assembly to restrict axial movement of the rear bearing assembly.

Abstract: In a refrigerant compressor comprising an overall housing with a motor housing portion, in which there is arranged a motor chamber having, provided therein, an electric motor comprising a stator and a rotor, and with a compressor housing portion which has a compressor unit, in order to be able to mount the stator as easily as possible it is proposed that the stator is mounted in the motor housing portion by means of supporting elements inserted into the motor housing portion, which supporting elements on the one hand abut against a stator-receiving surface of the motor housing portion and on the other hand surround the stator inserted into the supporting elements on its outer side and support it spring-elastically relative to the stator-receiving surface.

Abstract: A robotic arm mount assembly includes a first mount with a main body, the main body including a first end and a second end opposed to the first end in an axial direction, the first end including a first mounting portion. The robotic arm mount assembly also includes a motor including a motor body and a motor shaft attached to the motor body, a pinion gear attached to the motor shaft, a rack to be driven by the pinion gear, and a second mount including an extension portion and a second mounting portion.

Abstract: A stator for a generator of a wind turbine includes stator segments including a lamination stack, and a stator support structure with segments extending in an axial direction and being adjacently located in a circumferential direction to form a ring-like structure, wherein each support structure segment includes at least one longitudinal carrier element, which extends in an axial direction and includes a stator segment-sided lamination attachment section for fixing the carrier element to the respective stator segment using a lamination attachment assembly, wherein the lamination attachment assembly for each carrier element includes: a counter bearing element to be inserted into a cavity of the lamination stack and extending at least essentially over the complete axial length of the stator segment, a stiffening bar to be placed inside the carrier element on the lamination attachment section, extending at least essentially over the complete axial length of the support structure segment.

Abstract: Embodiments of this application disclose a stator, a stator manufacturing method, a motor, and an electric vehicle. The stator includes: a stator tooth part, where a plurality of stator tooth parts are arranged at intervals along a circumferential direction; and a stator yoke part, where the stator yoke part is disposed along a circumferential direction of the stator tooth part, and the circumferential direction is a circumferential direction around a central axis of the stator; where the stator tooth part and the stator yoke part are integrally formed by an oriented silicon steel sheet, and a grain direction of the formed oriented silicon steel sheet points to the central axis of the stator along a radial direction. Therefore, the stator tooth part and the stator yoke part are formed by using one material, and there is no need to splice two materials, thereby reducing process costs.

Abstract: An electric motor has a stator defining multiple stator poles with associated electrical windings, and a rotor having multiple rotor poles. The rotor has flux barriers between adjacent rotor poles, the flux barriers each having a material with an electrical conductivity higher than the rotor pole material. The flux barriers are electrically isolated from one another external to the ferromagnetic material. Eddy currents are induced in the flux barrier to cause destructive interference of an impending magnetic field, such that the flux barrier effectively acts to inhibit magnetic flux during motor operation, which in some cases will result in a repulsive force that will act to increase an induced motive force on the rotor poles.

Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.

Abstract: A vibration body unit includes: a vibration body; an inner cylinder that surrounds a circumference of the vibration body and that is elastically deformable; an outer cylinder that surrounds a circumference of the inner cylinder and that has an attachment section which is attached to a base part; a plurality of first spacers that are interposed between the vibration body and the inner cylinder and that are arranged to be spaced in a circumferential direction; and a plurality of second spacers that are interposed between the inner cylinder and the outer cylinder and that are arranged to be spaced in a circumferential direction, wherein the plurality of first spacers and the plurality of second spacers are arranged such that at least part of each of the plurality of first spacers faces each of the plurality of second spacers in a radial direction across the inner cylinder.

Abstract: An electric motor assembly includes a housing having a generally cylindrical inner surface defining a generally cylindrical cavity within the housing, a stator operatively disposed within the generally cylindrical cavity, the stator including a plurality of stacked laminations wherein each lamination has an outer circumferential edge and a plurality of finger elements extending inward, and a layer of polymer disposed between a generally cylindrical outer surface of the stator and the generally cylindrical inner surface of the housing, such that the stator is fastened to the housing by the polymer. A method of manufacturing the electric motor assembly includes disposing a stator within a housing such that a gap is defined between the stator and the housing and the stator is not directly connected to the housing, and substantially filling the gap with a polymer capable of fastening the stator to the housing by only the polymer.

Abstract: A motor for electric power tools according to an embodiment includes: a rotor having a rotational shaft; a stator having a coil to rotate the rotor; a first substrate mounting a sensor element to detect a rotational position of the rotor; and a second substrate mounting a switching element to change, based on a result of detection by the sensor element, a conducting direction in which a current flows with respect to the coil. The first substrate and the second substrate are arranged side by side along, and intersect at right angles with, the rotational shaft.

Abstract: The mechanical drive system comprises a frame, at least one rotating electric machine comprising an end shaft rotor arranged on the frame, and at least one transfer case having at least one driving gear wheel. The driving gear wheel is integral with a rotor shaft of the rotating electric machine, the transfer case being arranged on the frame.

Abstract: A permanent magnet carrier, which could be a rotor or stator of an electric machine, includes a first non-magnetic ring and a second non-magnetic ring. Between the rings are soft magnetic pole elements. The soft magnetic pole elements each connect to the first and second non-magnetic rings and the soft magnetic pole elements are separated from each other by the first and second non-magnetic rings. Permanent magnets are disposed between the soft magnetic pole elements.

Abstract: An electrically powered propellor apparatus comprising an axial flux electric machine. The axial flux electric machine comprises a rotor, at least one stator and a shaft. The shaft mounts the rotor and the shaft is mounted in at least two spaced apart thrust bearings. Each of the thrust bearings is configured to resist thrust in opposing axial directions of the shaft. The shaft has a propellor mounted on at least one end thereof.

Abstract: An apparatus for assembling a permanent magnet motor rotor includes a first-end positioning assembly, a plurality of connectors, and a second-end positioning assembly. The first-end positioning assembly is utilized to fix a first-end rotor core. The second-end positioning assembly is utilized to fix a second-end rotor core. The connectors are utilized to connect and fix the first-end positioning assembly with the second-end positioning assembly. Each first longitudinal axis of each first positioning element of the first end positioning assembly is different from each second longitudinal axis of each second positioning element of the second end positioning assembly. In addition, a method for assembling a permanent magnet motor rotor is also provided.

Abstract: An electric machine includes a rotor configured to rotate about an axis of rotation, a stator having a plurality of teeth annularly arranged on a stator core about the axis of rotation, a plurality of electromagnetic coils, and a base plate. Each coil of the plurality of electromagnetic coils may be mounted on a separate tooth of the plurality of teeth, and the base plate may be located adjacent to the plurality of electromagnetic coils and the stator core. The base plate may be in thermal contact with the plurality of electromagnetic coils and the stator core such that as the plurality of electromagnetic coils and the stator core heat during operation, the base plate is configured to serve as a common heat sink for the plurality of electromagnetic coils and the stator core.

Abstract: The invention relates to an electrical machine having a rotor (1), a stator (2) radially surrounding the rotor, and a housing (4) radially surrounding the stator. In order to minimize stresses in the housing and nonetheless decrease the tendency of the stator to torsional vibrations, the stator is connected to the housing at least at one end in a radially and torsionally rigid but axially movable manner, for example, by way of an axially compliant material area. The electrical machine can, in particular, be a motor spindle in a gear finishing machine.

Abstract: An electric fan includes a plurality of blades and an electric motor for rotating the blades. The electric motor includes a stator and a rotor rotatable relative to the stator about an axis. The rotor includes a backing ring and a diecast rotor can. The can includes a non-machined sidewall that is diecast integrally as part of the rotor can. The sidewall extends about the axis. The rotor can is diecast in an overlying relationship with at least part of the backing ring, with the sidewall and backing ring being securely interengaged so as to restrict relative shifting therebetween.

Abstract: An apparatus, according to one embodiment, includes: a support plate, a stator, at least one isolation mount coupled between the support plate and the stator for reducing transfer of vibration from the stator to the support plate, and a rotor sub-assembly. Furthermore, the rotor sub-assembly is configured to rotate relative to the support plate and the stator, the rotor sub-assembly including: a magnet, and a hub rotatably fixed relative to the magnet. Other systems, methods, and computer program products are described in additional embodiments.

Abstract: A motor includes a motor assembly, an end cap, a flexible insulating sleeve, and a flexible enclosure. The motor assembly includes a stator, a rotor, and wiring connected to the stator. The end-cap is coupled to the motor assembly to produce first sub-assembly. In addition, the end-cap includes an electrical fitting for feeding the wiring externally of the motor. The flexible insulating sleeve fits over at a least a portion the first sub-assembly to produce a second sub-assembly. The flexible enclosure includes a formed housing section and a connecting section. The formed housing section loosely fits over the second sub-assembly prior to tightening of the connecting section and, when the connecting section is tightened, the formed housing section tightly fits over the second sub-assembly compressing the flexible insulating sleeve to produce an insulating seal.

Abstract: Provided are, an electric motor assembly capable of preventing a sealant from leakage through a lead-wire drawing portion, and an electric motor manufacturing method with use of the electric motor assembly. The electric motor assembly includes a rotor, a stator, a casing, a partition wall with through-holes, plugs made of a highly elastic material and including a tapered outer peripheral surface to be fitted into the through-holes, and lead wires connected to the stator. The plugs surround lead-wire insertion holes. A sealant is injected into the casing in a state that the lead wires are drawn through the lead-wire insertion holes. The injection pressure presses the plugs outwardly to bring the outer peripheral surfaces of the plugs into close contact with the inner peripheral surface surrounding the through-holes and elastically deforms the plugs in a diameter-reduction direction to cause the plugs to close the lead-wire insertion holes.

Abstract: The invention provides a steering hub system driven by a ball joint universal rotary motor, including a hub body and a connection mechanism. The hub body is connected to a vehicle suspension via the connection mechanism. The hub body includes a ball joint universal rotary motor inside; the ball joint universal rotary motor includes a rotatable spherical shell-shaped rotor body having an opening, a spherical stator body disposed within the rotor body and connected to the connection mechanism, a first coil assembly and a second coil assembly both wound on the spherical stator body; when the first coil assembly is energized, the spherical shell-shaped rotor body rotates with respect to a first axis of the spherical stator body, and when the second coil assembly is energized, the spherical shell-shaped rotor body rotates with respect to a second axis of the spherical stator body, the first axis is not identical to the second axis.

Abstract: In an arrangement in an electrical machine, the electrical machine includes a rotor rotating around its shaft, a stator located from the rotor at an air gap, and a frame around the outer surface of the stator. A stator opening is formed in the end of the frame, and the stator opening is closeable with a cast end shield. The end shield includes at least three brackets protruding from the outer edge of the end shield. The brackets are fittable onto the end junctions where axially continuing structures are connected to the end at the junctions.

Abstract: Disclosed are an electric motor and an electric vehicle having the same. The electric motor includes a stator including a stator core and a stator coil wound around the stator core, a rotor disposed to be rotatable with respect to the stator, and a cooling unit configured to allow a cooling fluid to flow therein and disposed to be in contact with the stator to cool the stator, wherein an outer surface of the stator core includes grooves in which the cooling unit is inserted. Cooling performance can be enhanced by shortening a heat transmission path, and the cooling unit can be easily fabricated and coupled.

Abstract: A motor with an internal driver having a shell, having a stator, a rotor and a drive shaft attached to said rotor in an internal thereof; a front cover; a rear cover; ends of a drive shaft penetrating through holes of the front and rear covers to the external. The inner surface of the rear cover includes outer and inner circumferential walls and a receiving space defined by the outer and inner circumferential walls and the inner surface of the rear cover. A driver is provided within said receiving space and the outer surface of the rear cover is provided with a bearing slot to receive a bearing. An inner diameter of the inner circumferential wall is greater than the drive shaft. Said inner diameter of said inner circumferential wall is smaller than the annular diameter of the bearing in the bearing slot.

Abstract: A center frame is fastened to a first bracket and a second bracket such that a first mated protrusion and a second mated protrusion are fitted together with a first mated recess portion and a second mated recess portion so as to be mated. O rings are disposed annularly so as to be held between an end surface of the first bracket and a first axial end surface of the center frame, and between an end surface of the second bracket and a second axial end surface of the center frame on an opposite side from outer circumferential inner wall surfaces of the first mated recess portion and the second mated recess portion.

Abstract: There is disclosed a rotary electromotor including a stator, a stator winding on the stator, a stator frame, a rotator, end covers, and a highly heat-conductive member. The stator has a plurality of magnetic poles. The stator frame supports the stator. The rotator is supported by the stator with a gap therefrom such that the rotator is rotatable. The end covers close opposite ends of the stator frame. The highly heat-conductive member is fixed by a resin material in a space defined inside the stator, the stator frame, and the end covers.

Abstract: A rotating electrical machine includes a flange provided at one end of a hollow frame in an axial direction; a rotor including a shaft, the shaft being rotatably supported by the flange; and a stator fixed to an inner section of the frame, the stator surrounding the rotor. The rotor includes a first rotor core and a second rotor core arranged in the axial direction and having recesses formed in the axial direction, and a rotor-core space defined by the recesses that are formed in the first rotor core and the second rotor core and that face each other.

Abstract: An electric motor assembly is configured to be mounted within a machine in a selected one of multiple possible motor dispositions corresponding with different motor axis positions. The motor assembly includes an endshield having a pair of opposite generally radially-extending mounting flanges. Each mounting flange presents an engagement portion that includes a plurality of spaced apart, dissimilarly-shaped recesses that extend in a generally common direction. The pair of flanges cooperatively present corresponding sets of like-shaped recesses, each of which is associated with one of the motor dispositions, but only one of the sets of recesses extends entirely through the engagement portions to define a single set of like-shaped fastener-receiving through holes corresponding to the selected motor disposition. A method of manufacturing components for electric motor assemblies configured to be mounted within respective machines in a selected one of multiple possible dispositions is also disclosed.

Abstract: In an arrangement in an electrical machine, the electrical machine includes a rotor rotating around its shaft, a stator located from the rotor at an air gap, and a frame around the outer surface of the stator. A stator opening is formed in the end of the frame, and the stator opening is closeable with a cast end shield. The end shield includes at least three brackets protruding from the outer edge of the end shield. The brackets are fittable onto the end junctions where axially continuing structures are connected to the end at the junctions.

Abstract: A voice coil motor includes a stationary frame defining a first receiving space, a cover, and a base defining a second receiving space. The stationary frame includes a top surface and an opposite bottom surface. The top surface defines at least two first recesses. A first blocking portion is formed between each first recess and the first receiving space. At least two first protruding portions extend from the bottom surface. The cover is mounted to the top surface and includes a first surface facing the top surface. At least two second protruding portions extend from the first surface corresponding to the first recesses. The base supports the bottom surface and includes a second surface facing the bottom surface. The second surface defines at least two second recesses corresponding to the first protruding portions. A second blocking portion is formed between each second recess and the second receiving space.

Abstract: A heat dissipating fan includes a housing having an air inlet and an air outlet between which an air passageway is formed. A fixed seat is provided in the air passageway and includes first positioning holes. A magnetically conductive first casing includes a first outer wall, a first annular lip extending radially outward from an end of the first outer wall and having second positioning holes aligned with the first positioning holes, and a first support on the other end of the first outer wall. A second casing includes a second outer wall, a second annular lip extending radially outward from an end of the second outer wall and having third positioning holes aligned with the first positioning holes, and a second support on the other end of the second outer wall. Fasteners extend through the first, second and third positioning holes. A motor is mounted in the first and second casings.

Abstract: An objective is to provide a motor stator that may achieve: a reduction in parts costs by shaping coil ends so that length thereof is reduced, thereby reducing the amount of use of copper, and minimizing the amount of use of binding strings for securing the coil ends in place; a reduction in manufacturing process costs by a structure which allows a protector and a wire lead outlet part to be easily assembled; and then an improvement in quality of a stator by firmly holding the coil ends and the protector.