Abstract: A wheel-axle generator equipped with a rotor configured to rotate with rotation of a wheel and a stator arranged around the rotor. The rotor is fixed to a concave portion that opens toward a vehicle outside of a tire wheel of a wheel. An arm member that has one end attached to a wheel-axle housing or a steering knuckle), that extends so as to stride over a wheel, and that, on a side of an outer surface of the wheel, further extends parallel to the outer surface of the wheel up to a central portion of the wheel. The stator is annularly arranged so as to surround the rotor and is provided on the other end side of the arm member. This arrangement provides space for accommodating a generator without shortening a wheel axle etc. and attaching the generator easily.

Abstract: An electric motor includes a motor housing (1) and a further housing (6), in which electrical and/or electronic components (7) are arranged. A fluid-leading channel circuit is provided for cooling these components (7) and conductively connects the inside of the motor hosing (1) to the inside of the further housing (6).

Abstract: A motor casing of a driving device has a cylindrical wall portion, a bottom wall portion and a bearing holding portion formed in the bottom wall portion. An electric motor has a stator, a shaft and a rotor. A motor control unit controls operation of the electric motor. A first frame, to which the motor control unit is fixed, is provided between the motor control unit and the bottom wall portion of the motor casing. A first contacting portion is formed in the bottom wall portion and projected toward the first frame. The first contacting portion is in contact with the first frame at a front-side surface of the first contacting portion. A contacting surface area between the motor casing and the first frame is limitedly reduced, to thereby reduce noise caused by vibration. In addition, since a sufficient surface pressure can be obtained, strength of the driving device in its axial direction is increased.

Abstract: A permanent-magnet type rotating electrical machine, including a rotor including a plurality of magnetic poles arranged at an equal interval, and a stator including a plurality of teeth and a plurality of armature windings. A high frequency voltage different in frequency and amplitude from voltages for generating a torque is applied to the armature windings. A magnetic pole position of the rotor is estimated by using a current trajectory of a measured high frequency current. When dq transform is applied to the measured high frequency current, a current trajectory forms an ellipse on d and q axes. Angular variation ranges of a major axis of the ellipse with respect to a load current and a rotor position are set so as to acquire a predetermined position estimation resolution.

Abstract: A ratcheting micromotor includes a ratchet bar defining ratchet teeth along an edge thereof, and first and second ends in opposition to one another. The first end is adapted to be coupled to an object to be moved. A spring is coupled on one end thereof to the second end of the ratchet bar and adapted to be fixed at another end thereof to a base. A bi-directional actuator configured for linear movement in one of a first direction and a second direction, and when energized has a common yoke coupled to a central portion thereof for movement in correspondence therewith. The common yoke includes teeth formed along an edge and positioned such that its teeth engage a portion of the ratchet teeth. A control system energizes the bi-directional actuator to move, alternately, in the first direction and the second direction.

Abstract: An aspect of the present invention has a first disk-shaped member coupled to a first rotating shaft to rotate and a first plate-shaped member having a surface perpendicular to a surface of the first disk-shaped member and holding a first magnet. Moreover, a second disk-shaped member provided so as to face the first disk-shaped member and coupled to a second rotating shaft to rotate, and a second plate-shaped member having a surface perpendicular to a surface of the second disk-shaped member and holding a second magnet are provided. A magnetic pole of the first magnet on a side facing the second magnet and a magnetic pole of the second magnet on a side facing the first magnet have the same pole.

Abstract: A motor bearing for an electric submersible motor is described. An electric submersible motor includes a rotatable motor shaft extending longitudinally through a submersible motor, a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections, a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing, and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore. A motor bearing includes a series of recessions dispersed around an outer axial surface of a motor bearing, a magnet inset in each recession of the series of recessions, and an insulation layer coating a surface of each of the magnets.

Abstract: A motor includes a motor unit, a gear housing coupled to the motor unit, and a connector module including a connector housing coupled to the gear housing. The motor unit includes a rotation shaft and a power terminal. The gear housing accommodates a deceleration mechanism that outputs decelerated rotation of the rotation shaft. The connector terminal and the circuit substrate are fixed to the connector housing. The power terminal is connected to a socket of the connector terminal when coupling the connector housing to the gear housing. The connector terminal includes a fixed portion fixed to the connector housing, a substrate connecting portion connected to the circuit substrate, and a supported portion located closer to the socket than the substrate connecting portion. The connector housing includes a terminal supporting portion that supports the supported portion from the rear in the coupling direction.

Abstract: A rotor of an internal permanent magnet synchronous motor including a rotor core, a plurality of slots formed in the rotor core, and a plurality of permanent magnets housed in the plurality of slots. Each of the slots includes a holding part formed between a first outside diameter surface and a first inside diameter surface to hold each of the permanent magnets, and an opening part formed at both sides of the holding part and formed by a second outside diameter surface, a second inside diameter surface and a connecting surface connecting them. The second outside diameter surface is formed to a curved shape so that a distance to an outer circumferential surface of the rotor core in the diametrical direction gradually becomes smaller from both ends of the second outside diameter surface to an intermediate part in the circumferential direction.

Abstract: A wiper motor has: a magnet disposed on the yoke and formed with at least four poles; an armature disposed on an inner side of the magnet; a speed reduction mechanism unit having an output shaft for transmitting the rotation of the armature shaft; a gear housing connected to the yoke; a gear housing cover covering an opening of the gear housing; a magnet attached to the output shaft of the speed reduction mechanism unit; an absolute position detecting sensor disposed so as to face the magnet; and a control board having the absolute position detecting sensor attached thereto, the control board being disposed between the gear housing and the gear housing cover, and configured to control the rotation of the armature shaft.

Abstract: The invention proceeds from a rotating electric machine, in particular a double-fed induction machine in the power range between 20 MVA and 500 MVA, which comprises a rotor that rotates about a machine axis, is concentrically surrounded by a stator, and has a rotor plate body and a shaft, which rotor plate body bears a rotor winding that is arranged further outwards and is connected by means of connectors to slip rings that are arranged further inwards at the end of the shaft. A flexible and secure connection is achieved in that the connectors have mechanical connectors that run at right angles to the shaft to absorb forces arising owing to centrifugal acceleration, which mechanical connectors are connected on one side to a rotor winding head of the rotor winding and are supported on the other side on an auxiliary rim on the rotor plate body.

Abstract: A liquid-cooled rotary electric machine including jacket defining a heat transfer surface in conductive thermal communication with a stator and having an axial end portion partially enclosing an interior volume. A heat source is in conductive thermal communication with a wall of the jacket axial end portion. A fluid channel traverses the heat transfer surface between opposite axial ends of the jacket, and a fluid passage in fluid communication with the fluid channel is defined by jacket axial end portion walls. A flow path of liquid coolant through the machine is defined by the fluid channel and the fluid passage between a machine coolant inlet and outlet, whereby at least a portion of heat transferable between the heat source and the fluid passage is convectively transferable between the jacket axial end portion walls and liquid coolant along the flow path. Also a method for liquid-cooling a rotary electric machine.

Abstract: An automotive rotary electric machine according to the present invention includes: a mounting bolt that is inserted through a penetrating aperture that is formed on a bottom portion of a protective cover and that is fixed to a portion at a first axial end of a casing; and a metal mounting device that is fixed to a portion of the mounting bolt that projects out through the penetrating aperture, and a harness clamp is held by the metal mounting device.

Abstract: A fan includes a fan frame, a rotor, a stator module and a protection structure. The fan frame has a base seat and the stator module is disposed on the base seat. The stator module includes a silicon steel sheet assembly having multiple splits and multiple outer faces. The rotor is disposed in the fan frame corresponding to the outer faces of the silicon steel sheet assembly. The protection structure includes multiple posts corresponding to the splits of the silicon steel sheet assembly. The posts are welded with the splits by means of laser welding.

Abstract: An electronic device includes a first base body, a second base body, a third base body held between the first base body and the second base body, a first functional element disposed in a first cavity surrounded by the first base body and the third base body, and a second functional element disposed in a second cavity surrounded by the second base body and the third base body.

Abstract: A device for cooling of electric motor, which has a stator with a jacket surface/stator back, wherein a housing is arranged to surround the stator, includes at least one cooling channel in which a liquid cooling medium streams for cooling of the electric motor, wherein the housing is arranged to run separated from the stator along a main part of the thermoset cased jacket surface of the stator for forming of said cooling channel between the housing and said jacket surface, wherein the stator winding of the stator is arranged to run along and axially project from and turn outside of said jacket surface, wherein the stator including the projecting stator winding is embedded with said thermoset, wherein said cooling channel also is formed between the housing and the thus projecting stator winding.

Abstract: A plurality of lamination steel sheets that form a rotor core are stacked so that the lamination steel sheets are angularly shifted from each other, and a plurality of cavities are formed. Permanent magnets are molded and disposed in the cavities by injection molding. Each permanent magnet has a uniform plate thickness, and is bent with respect to an axial direction so as to have a triangular wave shape or an S shape. The permanent magnets are magnetized after being disposed in the cavities. The paired magnet pieces have poles of the same polarity, which face each other in the circumferential direction of a rotor, and each of the magnet pieces is magnetized in directions of normals to a surface of the magnet piece, the surface having a linear sectional shape.

Abstract: Two magnetic poles of a permanent magnet of a permanent magnet switch and the two ends of an iron core wound with an excitation coil are connected to each other with the soft magnet having a salient pole. A motor uses the switch as the basic component of the stator and rotor, with two magnetic salient poles of each component being arranged axially, wherein the salient pole of the stator component and that of the rotor component are arranged in an opposite manner with an air gap, the excitation coil of the stator component and the rotor component at the symmetric axis position is taken as a phase line to access an excitation control power supply after serial connection or parallel connection. Electric excitation is carried out on the combined motor formed by shaft connection and rotation dislocation among single motors and the stator component in a bi-phase way simultaneously.

Abstract: The disclosure relates to a three-phase electric motor that uses high magnetic energy permanent magnets and that has a low detent torque. The motor consists of a rotor with N pairs of poles and of a stator portion with teeth extending radially from an annular gear. The teeth have windings and the ends thereof comprise an arc of circle, the middle of which is located on a radius R1 and two sides defining an alpha angle, the vertex of which is located on a radius R2. The ratio R2/R1 is substantially equal to (1+/?0.26/N), and the alpha angle is between 110 and 135°.

Abstract: A linear vibrator includes a housing providing an internal space; a fixed part including a coil fixed to the housing to be disposed in the internal space; a vibrating part including a magnet disposed to face the coil and generating electromagnetic force by interacting with the coil; and an elastic member having one end fixed to the housing and the other end fixed to the vibrating part to elastically support the vibrating part, wherein the elastic member includes a first fixed part fixed to the housing, a second fixed part fixed to the vibrating part, and a deformable part connecting the first fixed part and the second fixed part to each other and elastically deformed, and the first fixed part includes a welded part being welded and coupled to the housing at the outside of a portion of the first fixed part to which the deformable part is connected.