Abstract: A housing for an electric motor includes a tubular wall extending in an axial direction of the housing, and closures at opposite axial ends of the tubular wall to rotatably support opposite axial end portions of a rotor. At least one of the closures is separate from the tubular wall and includes a radially inner portion and a radially outer flange that, in an assembled state, is in physical contact with a radially inner surface of the tubular wall and extends from the radially inner portion of the separate closure towards the opposite axial end of the tubular wall.

Abstract: A stator for an electrical machine, in particular for an electromotive drive machine for an electric or hybrid vehicle, includes a stator core stack with a stator yoke and a number of radial stator teeth, as well as a corresponding number of stator slots, arranged between the stator teeth, for receiving a stator winding. A cooling apparatus has a number of cooling channels, each of which runs axially in one of the stator slots.

Abstract: A motor includes a stator with a stator core, an insulator, coils, and a terminal pin. The stator core includes an annular core back and teeth. The teeth extend radially outward from the core back and are arranged in the circumferential direction. The coil is defined by a conductive wire wound around a tooth via the insulator. The conductor is connected to the conductive wire and is connected to the circuit board. The insulator includes a cylindrical terminal holder located between adjacent ones of the teeth, extends in the axial direction, and accommodates the conductor. The core back includes a stator recess located between adjacent ones of the teeth and is recessed radially inward from the radially outer surface. The stator recess accommodates at least a portion of the terminal holder.

Abstract: An angle grinder includes a housing, an output shaft, and a motor. The motor includes a stator assembly, a rotor assembly including a motor shaft configured to rotate about a first axis, a commutator, and a carbon brush. The commutator includes a bushing, configured to connect the commutator to the motor shaft, a plurality of commutator segments, sequentially distributed in a circumferential direction around the first axis and arranged around the bushing, and an insulating member, configured to bond the bushing and the plurality of commutator segments so as to constitute a whole.

Abstract: The present invention provides a direct current motor, comprising: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, including a plurality of armature windings in a predetermined connection, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole; each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, the field winding part includes k field winding units, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles, and m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2.

Abstract: The invention provides a vibration motor includes a housing, a vibrator in the housing, a stator accommodated in the housing, and a number of elastic parts suspending the vibrator in the housing. One of the vibrator and the stator includes a magnetic circuit system, and the other includes a coil. The elastic part is in an H shape, each has a first fixation part fixedly connected with the magnetic circuit system, and two second fixation parts perpendicularly extending from two opposite ends of the first fixation part. In addition, an interval is formed between the two second fixation parts. The second fixation parts and the first fixation part are fixedly connected with the housing. Therefore, the amount of parts of the vibration motor is reduced, the structure of the elastic part is simple, the machining and forming are simplified, and the cost is lower.

Abstract: A resolver that ensures improvement in a detection sensitivity is provided. The resolver according to the present disclosure includes a rotor and a stator arranged to surround an outer peripheral surface of the rotor. The rotor includes a rotor core, the stator includes a stator core and a coil, the stator core includes a plurality of teeth disposed at intervals along a circumferential direction, the plurality of teeth project toward the outer peripheral surface side of the rotor, and the coil is wound around the plurality of teeth. A gap permeance between the rotor and the stator varies in association with a rotation around a rotation axis of the rotor. The rotor further includes a porous machinable film containing a magnetic metal, and the porous machinable film is disposed on a projecting portion on an outer peripheral surface of the rotor core.

Abstract: The purpose of the present invention is to obtain a structure with which it is possible to improve the heat dissipation performance and efficiency of an axial gap dynamo-electric machine. Accordingly, the present invention is an axial gap dynamo-electric machine of such construction that a disc-shaped rotor in which permanent magnets are disposed is provided in the axial direction and a stator is disposed in the axial-direction center portion, wherein the outer circumferential side of a stator winding is in intimate contact with the inside diameter of a housing, embedding with a mold resin is used for the housing and a stator core and for a stator coil and the housing so that a connection is established with the housing, and the housing comprises a nonmagnetic, electrically nonconductive material.

Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis, a reduction gear including an intermediate gear to rotate about an intermediate axis and connected to the motor, a differential including a ring gear to rotate about a differential axis and connected to the reduction gear, a housing including a housing space to house the motor, the reduction gear, and the differential, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space to be fed to the motor. The housing includes a ceiling portion directly above the reduction gear and the differential. At least a portion of the ring gear is lower than a liquid surface of the oil in the vertically lower region of the housing space. The motor axis, the intermediate axis, and the differential axis extend in parallel with one another along a horizontal direction. Each of the intermediate axis and the differential axis is lower than the motor axis.

Abstract: An electrical machine for a vehicle includes a rotor, which can be rotated about an axis of rotation, by which an axial direction of the electrical machine is defined, a stator with stator windings; and a cooling channel, or a plurality of cooling channels, through which a coolant flows. The stator has stator teeth, which extend along the axial direction and are spaced apart from each other along a circumferential direction and which bear the stator windings. At least one stator winding is embedded in an electrically insulating plastic for thermal coupling, the electrically insulating plastic is arranged, together with the at least one stator winding, in an intermediate space, which is formed between two stator teeth adjacent in the circumferential direction, and the electrically insulating plastic is formed by a first plastic mass of a first plastic material and a second plastic mass of a second plastic material.

Abstract: A permanent magnet electric motor for a vehicle comprises a stator comprising a round wire defining N portions and a stator lamination defining an inner surface, N slots, and N/2 alternating, full-slot-width apertures in the inner surface, wherein the N portions of the round wire are disposed in the N slots, respectively, and a rotor comprising M permanent magnet assemblies defining M respective poles, each of the M permanent magnet assemblies comprising a pair or bar magnets arranged in a V-shaped configuration with respect to each other, wherein N equals 6 and M equals 4 or N and M equal respective double multiples thereof, and a rotor lamination having the M permanent magnet assembles disposed therein and defining, for each of the M permanent magnet assemblies, at least three sets of air pockets disposed proximate to the respective permanent magnet assembly.

Abstract: A motor comprising a main shaft, a first rotating member mounted on the main shaft, the first rotating member comprising a first arm extending radially outward from the main shaft, the first arm having a length L, a second arm extending radially outward from the main shaft, a first magnet mounted on the first arm such that a first pole faces a recess between the first and second arms, and a second magnet mounted on the second arm such that the first pole faces the recess between the first and second arms. The motor further comprising a piston movable towards and away from the main shaft in a generally radial direction and positioned proximate the first rotating member, the piston comprising a first magnet.

Abstract: A device for storing kinetic energy including a base assembly supporting a central vertical shaft and having a first ring of magnets mounted thereabout at a first radial distance from the central vertical shaft; and a rotatable disc rotatably mounted on the central vertical shaft and vertically displaceable on the central vertical shaft, the rotatable disc having a fixedly mounted second ring of magnets that are radially spaced from the central vertical shaft by approximately the first radial distance, wherein the rotatable disc weightlessly levitates above the first ring of magnets and has reduced gyroscopic precession forces.

Abstract: A magnetically controlled wheel based on electromagnetic propulsion system includes a magnetron wheel body, a stator core, a main shaft, a bearing part, a rotor core and a wear-resistant tire, wherein the main shaft is mounted on the middle part of the magnetron wheel body; the outer end of the main shaft is connected with a shaft cap; the inner end of the main shaft is welded with a fixed shaft; the stator core is welded on the main shaft; the outer side of the stator core is provided with a plurality of protruding claw poles; the claw poles are wound with a stator winding; the rotor core is sleeved on an outer of the stator core; the inner wall of the rotor core is provided a plurality of rotor teeth poles; and the rotor teeth poles are wound with a field winding.

Abstract: An electromechanical system comprising: a rotor comprising a plurality of teeth spaced about a circumference of the rotor, wherein the teeth of the rotor are equally spaced about the rotor according to a tooth spacing angle, and are skewed in an axial direction such that the circumferential positions of the teeth of the rotor vary along the axial length of the rotor, and first and second stator segments, each extending partway about the rotor and comprising a field winding and poles arranged to magnetically interact with the teeth of the rotor such that an alternating current (AC) back-emf is induced in the field winding upon rotation of the rotor. The poles of the first stator segment are angularly displaced about the rotor from the poles of the second stator segment such that the back-emf induced in the field winding of the first stator segment is phase shifted with respect to the back-emf induced in the field winding of the second stator segment.

Abstract: In one possible embodiment, a motor winding is provided having a high density multi-conductor wire bundle with a compacted Litz wire bundle. The compacted Litz wire bundle has a serpentine configuration with a central portion having compacted Litz wire and end turns having non-compacted Litz wire.

Abstract: A motor assembly for clothes dryer machine, comprising: a driving shaft rotatably associable with a frame of a clothes dryer machine and arranged to drag in rotation at least one air movement fan of said clothes dryer machine; a first electric motor comprising a first internal stator crossed by said driving shaft and rotatable relative thereto and a first outer rotor integral in rotation with said driving shaft; a second electric motor comprising in turn a second internal stator and a second outer rotor, both crossed by said driving shaft and rotatable relative thereto, wherein said second outer rotor is integral with a pulley for actuating a drum of said clothes dryer machine.

Abstract: The present application discloses a motor mechanical limiting device for limiting rotation of a motor. The device includes: a limiting ring, a first limiting device, and a second limiting device. The first limiting device is fixedly connected on a rotor of motor. The second limiting device is fixed on a motor stator. The limiting ring is in bearing connection with the rotor of motor. The limiting ring protrudes to form a stopping edge. Both the first limiting device and the second limiting device are located on a circumferential rotation path of the stopping edge, and the second limiting device is provided with a region for the first limiting device to pass through.

Abstract: An apparatus for charging a handheld computing device is described. The apparatus includes a case, a power storage device, a photovoltaic power source, a charging device, a communication module, and a data connection port. The case is sized to hold a handheld computing device. The power storage device is mechanically connected to the case. The photovoltaic power source is connected to the power storage device. The charging device is electrically connected to the power storage device to charge the handheld computing device. The communication module communicates with the handheld computing device. The data connection port provides data access for the handheld computing device using the communication module.

Abstract: An end plate for a rotor assembly of an electrical machine includes a central through-opening for a shaft, a collar formed on an end face of the end plate on the radial outside in the circumferential direction and a plurality of elevations on the end face. The elevations and collar axially delimit a cooling channel, wherein the cooling channel forms a plurality of cooling channel sections on both sides by a respective elevation. Two elevations delimiting a cooling channel section are spaced apart from one another by a first arc length at a first radial position between the through-opening and the collar and are spaced apart from one another by a second arc length greater than the first arc length at a second radial position delimited by the collar. Each cooling channel section includes at least one fluid guide element between the first radial position and the second radial position.