Abstract: A device includes a first rotor segment and a second rotor segment, wherein the first rotor segment and the second rotor segment are configured to be directly coupled together about a shaft to form at least a portion of a unitary rotor. The device also includes a first stator segment and a second stator segment, wherein the first stator segment and the second stator segment are configured to be directly coupled together to form at least a portion of a unitary stator.

Abstract: A motor includes a grounding ring and a first sealing piece, or includes a grounding ring, a first sealing piece, and a second sealing piece. The grounding ring is electrically coupled to a rotating shaft and a housing. The grounding ring is made of a material with good conduction performance, hence, a shaft induced voltage transmitted on the rotating shaft is transmitted to the housing through the grounding ring, instead of being transmitted to the housing through a motor bearing.

Abstract: A functional module is provided. The functional module is applied to an electronic device, and includes a housing, a functional member, and a motor assembly. Both the functional member and the motor assembly are disposed in the housing. The motor assembly includes a motor and an output shaft. The motor is configured to drive the output shaft to rotate. The output shaft protrudes from one side of the housing.

Abstract: An electrical machine includes a stator assembly coupled to an engine stator component of a propulsion engine. The stator assembly includes a stator support assembly fixedly attached to the engine stator component and a stator disposed on a supporting surface of the stator support structure. The electrical machine also includes a rotor assembly including a rotor support structure connected to a shaft of the propulsion engine and a rotor attached to the rotor support structure such that the rotor is disposed radially inward of the stator. The rotor exchanges rotational energy with the shaft to operate as either an electrical motor or an electrical generator.

Abstract: The fan motor according to the present invention comprises a fan (10) comprising a fan body (11) having a circular plate shape, a plurality of fan blades (12) formed in an upper portion of the fan body (11), a central protruding part (13) protruding upwardly from a central portion of the fan body (11), a shaft fixing part (14) formed in an inner side of the central protruding part (13), a shaft (15) coupled and fixed to the shaft fixing part (14) to rotate when the fan body (11) rotates, and a magnet receiving part (16) formed in a central lower portion of the fan body (11); a ring plate magnet (20) coupled to the magnet receiving part (16); a motor bracket (30) having a PCB bracket coupling part (31) formed in a center; a PCB bracket (40) comprising a body (41) having a cup shape, a bearing insertion part (42) having a cylinder shape, protruding upwardly from a center of the body (41), a through-hole (44) formed inside the bearing insertion part (42), into which a bearing (45) is inserted, and the bearing (4

Abstract: A housing of a drive device includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path, a third flow path, and a fourth flow path. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to the motor portion flows in the second flow path. The third flow path supplies a part of the refrigerant flowing through the second flow path to the outer surface of a stator. The fourth flow path supplies the other part of the refrigerant flowing through the second flow path to a hollow portion of a shaft. A minimum flow-path cross-sectional area in the fourth flow path is smaller than a minimum flow-path cross-sectional area in the third flow path.

Abstract: It is provided an actuated machine having a main frame, a machine shaft mounted on the main frame by means of a bearing module, a gearless torque motor coupled to the machine shaft for driving a rotation of the machine shaft, a torque arm coupled to the gearless torque motor, and a catching structure. The gearless torque motor is coupled to the machine shaft 200 such that the gearless torque motor is capable of following a translational movement of the machine shaft. The torque arm is coupled to the gearless torque motor for inhibiting a rotational motion of the gearless torque motor, relative to the main frame, about a central axis of the gearless torque motor. The catching structure is arranged underneath the gearless torque motor for catching and holding the gearless torque motor in case of a failure causing the gearless torque motor's weight to be no longer carried by the machine shaft.

Abstract: A motor according to the present application includes a rotating shaft, a bearing, a bearing holder configured to accommodate the bearing, a holder disposed at one end portion side of the bearing holder in a rotating shaft direction, and a lid disposed at another end portion side of the bearing holder in the rotating shaft direction. A labyrinth structure is formed of one end portion of the bearing holder and an inner peripheral portion of the holder, and/or a labyrinth structure is formed of the rotating shaft and the lid.

Abstract: A rotary electric machine system includes a rotary electric machine, a housing for housing the rotary electric machine, and a rotation parameter detector for detecting the rotation parameter of a rotating shaft constituting the rotary electric machine. The rotating shaft includes a first end portion and a second end portion, and a first bearing and a second bearing are provided between the housing and the first end portion, and between the housing and the second end portion, respectively. The first end portion includes a protruding tip that protrudes out of the housing through the first bearing. The rotation parameter detector is provided at the protruding tip.

Abstract: A motor drive system with a rotor assembly having an insert, which is received into a blind hollow rotor space in a rotor shaft. The insert is unitarily and integrally formed and defines a central hole, which is disposed along a rotational axis of the rotor assembly, and a plurality of slots that extend through an outer circumferential surface of the insert. The insert is disposed in the rotor shaft such that the outer circumferential surface of the insert is engaged to the inside circumferential surface of the rotor shaft. The central hole forms a first fluid passage through the insert, while the slots form a plurality of second fluid passages through the insert.

Abstract: A rotor arrangement for an electric motor is disclosed. The rotor arrangement comprises a first rotor comprising a hollow cylinder and a cylindrical rotor stack shrink-fitted onto the hollow cylinder. The first rotor comprises a first end plate attached to a first end portion of the hollow cylinder. The rotor arrangement further comprises a rotor shaft comprising a first shaft member and a second shaft member arranged coaxially to the first shaft member. The first shaft member is connected to a connection portion of the first end plate. The rotor arrangement comprises a second rotor connected to the second shaft member. The present disclosure further relates to an electric propulsion motor arrangement, a vehicle, and a set of rotors for electric motors.

Abstract: A motor according to an embodiment includes a shaft as a rotation axis, a rotor, a bearing, and a spring member. The rotor is fixed to the shaft. The bearing is disposed opposite to the rotor in the rotation axis direction and rotatably supports the shaft. The spring member is disposed between the rotor and the bearing and includes a first end portion fixed to the rotor.

Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).

Abstract: A rotating electrical machine includes a magnetic field-producing unit equipped with a magnet unit including a plurality of magnetic poles, and an armature which includes a multi-phase armature winding. The armature winding has conductor portions which are arranged at a given interval away from each other in a circumferential direction. The armature is designed to have conductor-to-conductor members arranged between the conductor portions in the circumferential direction. The armature may alternatively be designed not to have the conductor-to-conductor members disposed between the conductor portions in the circumferential direction. The magnet unit is magnetically oriented to have an easy axis of magnetization which is directed in a region close to a d-axis that is a center of a magnetic pole to be more parallel to the d-axis than that in a region close to a q-axis that is a boundary between magnetic poles.

Abstract: Embodiments of this application provide a motor rotor, a motor, and a vehicle. A conductive pillar passes through an inner ring of a conductive bearing, an outer wall of the conductive pillar interference fits with the inner ring of the conductive bearing, and an end of the conductive pillar is grounded. In this way, it is ensured that a shaft current on a rotor body is discharged by using the conductive bearing and the conductive pillar, to prevent a main bearing of the motor rotor from being electrically corroded by the shaft current. In addition, the conductive bearing is sleeved on the grounded conductive pillar, so that the inner ring of the conductive bearing can interference fit with the outer wall of the conductive pillar.

Abstract: Provided is a waterproof motor for preventing external liquid from entering a housing thereof. The waterproof motor includes a housing, a motor shaft, a bearing, a motor packing, and a motor shaft O-ring provided between the motor packing and the bearing, wherein the motor shaft O-ring has a through hole formed in the center of a body part so that the motor shaft is inserted thereinto, projection parts are formed on the inner wall surface of the through hole toward the center of the through hole so as to be elastically deformed while outer surfaces of the projection parts come into contact with the outer surface of the motor shaft, and a storage groove is formed between the projection parts and stores lubricating oil such as grease.

Abstract: The present disclosure provides a magnetic suspension bearing stator, a compressor and an air conditioner. The bearing stator includes a frame, a bearing iron core and an axial winding, the frame is provided with an accommodation recess used to position the axial winding. A position-limiting portion is disposed in the accommodation recess, and the position-limiting portion is used to keep the axial winding in the accommodation recess. The frame is provided with a first positioning portion for connecting with the bearing iron core on the outer wall surfaces of both sides of the accommodation recess. The frame is not easy to come out from the bearing core, and the axial winding is not easy to come out from the frame, so that the relative position between the axial winding and the bearing iron core is fixed.

Abstract: An electric assembly includes: a box assembly, a motor, and a transmission. A mounting plate is disposed in the box assembly and divides a space within the box assembly into a motor holding cavity and a transmission holding cavity arranged along an axial direction of a motor shaft. The mounting plate has a shaft via-hole making the motor holding cavity and the transmission holding cavity be in communication. The motor is disposed in the motor holding cavity. The transmission is disposed in the transmission holding cavity. The motor is power-coupled to the transmission. At least one of a surface of the mounting plate facing the motor and a surface of the mounting plate facing the transmission is provided with ribs including strip-shaped ribs extending along a radial direction of the motor. Heights of the strip-shaped ribs decrease from a center portion of the mounting plate to a periphery portion of the mounting plate.

Abstract: The present invention discloses a flat-wire continuous wave-wound staggered winding and a stator including same, relating to the technical field of motor manufacturing. The flat-wire continuous wave-wound staggered winding consists of an incoming line end wire portion, an outgoing line end wire portion, and S-shaped wave wires. The S-shaped wave wires include an effective side portion, a straight wire portion, and an end portion, wherein a staggered winding portion is provided in the S-shaped wave wires. The staggered winding portion is arranged in a staggered manner between the wires in each phase of the wires. The present invention achieves single three-phase control for motors or generators with different numbers of slots distributed per pole per phase, thereby simplifying motor circuits and reducing manufacturing costs. The second harmonic of the motor can be reduced, and the noise of the motor can be lowered, thereby improving the product quality.

Abstract: An embodiment relates to a motor comprising: a shaft; a rotor coupled to the shaft; and a stator disposed on the outside of the rotor, wherein the rotor includes a rotor core and a plurality of magnets disposed on the outer circumferential surface of the rotor core, wherein the rotor core includes a first region coupled to the shaft and a second region disposed on the outside of the first region, and wherein the upper or lower portion of the second region radially overlaps a bearing coupled to the shaft. Accordingly, the size of the motor can be reduced compared to the conventional art.