Abstract: In a rotating electrical machine, each magnet installation hole is formed to be in conformity with a radial cross-sectional shape of a corresponding magnet to be installed therein. Each of the magnets and the corresponding magnet installation holes has opposite peripheral surfaces. One of the opposite peripheral surfaces serves as a far-stator peripheral surface located to be further from a stator than the other thereof. The far-stator peripheral surface of each of the magnets and the corresponding magnet installation holes has a circumferential end and a circumferential middle. The magnet unit has a first radial dimension defined from the circumferential end of the far-stator surface to the stator, and a second radial dimension defined from the circumferential middle of the far-stator surface to the stator. The first radial dimension is lower than the second radial dimension.

Abstract: An electric work machine (1; 201) includes: a motor housing (6; 212) having a tube part (6C; 212C) and a bottom part (6M; 212M); a brushless motor (5; 228) having a stator (20), which has a first contact surface (58F; 258F), and a rotor (21; 231) disposed in the stator; a baffle plate (25; 285); and an output shaft (31; 292). The stator includes a tube-shaped stator core (50) having a ring-shaped second contact surface (50S; 250S) that is opposite of the first contact surface, and coils (56; 256) wound on the stator core. The stator is held by the motor housing with the first contact surface in contact with the bottom part. A protruding part (25S; 285S) of the baffle plate contacts the entire circumference of the second contact surface of the stator core and is fixed to the motor housing by three or more screws (68; 288).

Abstract: A pump includes an electric motor with a rotor rotatably supported about an axis of rotation and circumferentially surrounding a stator. The stator includes a stator core and coils wound on the stator core. The windings are defined by a winding wire including winding wire end sections that are electrically contacted with a printed circuit board by a crimp connection.

Abstract: In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Abstract: A motor assembly can include a motor shaft, a stator assembly, and a rotor assembly, and can include a cooling jacket. The cooling jacket can include an inner wall facing radially inwardly towards the stator assembly and an opposite outer wall facing radially outwardly, a circumferential internal fluid passageway for allowing a cooling fluid to be pumped through an interior of the cooling jacket, the internal fluid passageway being disposed between the inner and outer walls and extending between an inlet and an outlet, a mounting pad receiving, at an opening in the outer wall, a heat generating component associated with the motor assembly, the opening being in fluid communication with the internal fluid passageway such that the cooling fluid can provide cooling to the heat generating component.

Abstract: A brushless motor is an inner rotor type brushless motor. The brushless motor includes a plurality of phase coils of multiple phases arranged around a rotation axis, and a plurality of terminals configured to connect the plurality of phase coils of multiple phases to a switching circuit. The plurality of terminals are located inside a circumscribed circle of the plurality of phase coils of multiple phases.

Abstract: A motor, a compressor and a refrigeration device are provided. The motor has a stator, a plurality of coil sets and a rotor. The stator has multiple stator teeth arranged along a peripheral direction. Every two adjacent stator teeth define a stator groove. Each coil set has multiple coils wound on the stator teeth. Each coil bypasses a corresponding stator tooth. The rotor is arranged inside the stator and has a rotor core and multiple permanent magnets. The rotor core has multiple slots. The slots are distributed circumferentially around a rotation center line of the rotor core. The permanent magnets are arranged in the slots.

Abstract: A two-speed electric drive assembly for vehicles includes a main driveshaft driven by a first axial flux motor where the main driveshaft extends coaxially through a hollow assist driveshaft driven by a second axial flux motor. The main driveshaft includes a main gear that is continuously meshed with an intermediate gear on an intermediate driveshaft. A freewheel gear is mounted around the hollow assist driveshaft and can be selectively coupled and decoupled with the hollow assist driveshaft by a shift mechanism. The freewheel gear is continuously meshed with an intermediate gear on the intermediate driveshaft. Another intermediate gear affixed to the intermediate driveshaft is continuously meshed with an output gear affixed to an output driveshaft. The two-speed electric drive assembly can selectively switch between speed mode and torque mode without torque interrupt.

Abstract: A system having a damper with six or more indentations on alternating sides of the damper, where each indentation is open to an outer circumferential surface of the damper and extends over halfway through a width of the damper, and six or more slots, each slot open to an undulating inner circumferential surface of the damper and extending through the width of the damper.

Abstract: The present invention may provide a motor including a shaft, a rotor coupled to the shaft, and a stator disposed to correspond to the rotor, wherein the stator includes a yoke and a tooth protruding from the yoke, the tooth includes a first surface, a plurality of second surfaces, and a plurality of third surfaces which are opposite to the rotor, the second surface is disposed between the first surface and the third surfaces to have predetermined gaps therebetween in a radial direction from the shaft, and a shortest distance from the shaft to the first surface is shorter than a shortest distance from the shaft to the third surface.

Abstract: An electrical machine includes a rotor, which can be rotated about an axis of rotation, with which an axial direction is defined, and a stator having stator windings, a coolant distribution chamber and a coolant collecting chamber arranged axially at a distance thereto, the coolant distribution chamber fluidically communicates with the coolant collecting chamber for cooling the stator windings, a cooling duct and a stator winding are embedded in an electrically insulating plastic for thermal coupling, the stator has stator teeth which extend along the axial direction, are spaced apart from each other along a circumferential direction and bear the stator windings, the electrically insulating plastic is arranged together with the cooling duct and the stator winding in an intermediate space, and the electrically insulating plastic is formed by a first plastic mass of a first plastic material and by a second plastic mass of a second plastic material.

Abstract: A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-accommodating, both ends opened cylindrical bobbin and a coil block including a coil wound on a periphery of the bobbin; a stator including a cylindrical yoke formed with a lens-exposing opening, a plurality of magnets disposed inside the yoke and opposite to the coil block, and a housing disposed inside the yoke to fix the plurality of magnets; and an elastic member elastically supporting the bobbin.

Abstract: A lamination of a rotor of a rotary dynamo-electric machine includes a shaft bore with a radius, at least two pull-through grooves, and two intermediate space recesses. Each of the pull-through grooves has a lamination tongue facing radially inwards towards an axis such that the lamination tongue ends facing radially inwards lie on a radius which is smaller than the radius defined by the shaft bore.

Abstract: The motor includes a shaft fixed to a front surface side of a motor bracket; a rotor rotatably supported on the shaft; a stator wound with coils for generating a magnetic field to rotate the rotor; a substrate, a front surface of which mounted with a driver circuit for controlling magnetic field generation by the coils; a conductive driver case forming an accommodation space accommodating the substrate between itself and the motor bracket; a terminal disposed on a front surface side of the substrate facing the motor bracket and connecting the driver circuit and the coils; a conductive fixing member penetrating the substrate from a rear surface side and fixing the terminal in contact with the substrate; and an insulating driver insulator disposed on a rear surface side of the substrate to surround the fixing member, and protruding to a position closer to the driver case than the fixing member.

Abstract: A rotating electric machine 100 having a rotor 1, a stator 2, and a coil 3 including a coil conductor 31 wound around teeth 21b provided on at least one of the rotor 1 and the stator 2 includes a spacer section 42 configured to extend along a slot S formed between the teeth 21b and to be inserted between turns of the coil conductor 31 to define a gap G between the turns, and a cooling medium supply section 6 configured to distribute a cooling medium in the gap G. A notched section 421 cut out in such a manner that a widthwise dimension of the spacer section 42 is relatively short is provided in a middle of an extension of the spacer section 42.

Abstract: A linear conveyor includes a linear motor stator including a stator including a core and a coil, and a magnetic sensor configured to detect a position of a slider. The linear conveyor further includes a magnetic shielding member arranged between the magnetic sensor and the linear motor stator and configured to shield magnetic flux from the linear motor stator toward the magnetic sensor.

Abstract: An actuator according to various embodiments of the present invention comprises: a stator including a bracket, a yoke located on the bracket, and a coil for encompassing the circumference of the yoke; a permanent magnet encompassing the circumference of the coil; a vibrator including a weight encompassing the circumference of the permanent magnet, and a plate for supporting the permanent magnet and the weight; an elastic member located between the bracket and the vibrator so as to support the vibrator; and a magnetic fluid which is located between the vibrator and the stator, and which provides damping stability when the vibrator vibrates, wherein the weight of the magnetic fluid can be between 0.24% to 0.71% on the basis of the weight of the vibrator. Other various embodiments are possible.

Abstract: A substrate transferring apparatus including a non-contact type driving unit is provided. The substrate transferring apparatus comprises a stator assembly including a driving surface and an electromagnetic generating module, a first mover including a first magnet module facing the electromagnetic generating module and floating and moving on the driving surface, and including a first inclined surface, a second mover including a second magnet module facing the electromagnetic generating module and floating and moving on the driving surface, and including a second inclined surface, and a transfer member disposed between the first mover and the second mover and moving along the first inclined surface and the second inclined surface according to a distance between the first mover and the second mover.

Abstract: An electric machine includes a stator rotatably supporting a rotor, the rotor includes a stacked rotor laminations forming a rotor core with cavities having magnets arranged in the cavities through at least two adjacent rotor laminations and parallel to a rotor central axis, each lamination including an outer edge having grooves or scallops arranged asymmetrically about the circumference to reduce torque ripple. At least one groove or scallop may be arranged along a q-axis and at least one groove or scallop may be arranged between a q-axis and a d-axis of the rotor core. The laminations may be substantially identical with a first group of laminations flipped or rotated about a diametric axis relative to a second group of laminations. An electrified vehicle includes an electric machine powered by a traction battery, the electric machine having a rotor core with stacked rotor laminations having a scalloped outer edge.

Abstract: An assembly for transferring electrical energy comprises a stator. A rotor is separated from the stator for relative rotation with respect to the stator. An axial gap is defined between the rotor and the stator. A transmitter is associated with or on the stator, where the transmitter is configured to transmit an alternating current (AC) wireless signal. An annular clamp comprises a first semi-elliptical portion and a second semi-elliptical portion that define an opening for receipt of the rotor. The annular clamp has fasteners to secure the first semi-elliptical portion to the second semi-elliptical portion about the rotor. A receiver is associated with of the annular clamp.