Abstract: Various embodiments may include a rotor for an electric machine, the rotor comprising: a first shaft journal; a second shaft journal; a laminated rotor core; a filler body cast onto the laminated rotor core wherein the filler body and the laminated rotor core rotate conjointly; and a cooling duct extending through the shaft journals and the filler body along an axis of the filler body and the rotor core. The filler body rotates with the shaft journals and a torque applied to the shaft journals is transmitted to the laminated rotor core.

Abstract: The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.

Abstract: An electric motor comprising: a first element having at least one electromagnet, a second element, rotatable relative to the first element about an axis, the second element comprising at least one permanent magnet, wherein the electric motor is arranged to generate a torque by applying a rotating magnetic field to the second element, and a friction member coupled to the first element such that the friction member is non-rotatable relative to the first element about the axis, the friction member comprising a magnetically susceptible material and being biased by a first biasing force toward the second element, wherein the first element, the second element and the friction member are configured such that: when the electromagnet is not energized, the first biasing force causes the friction member to contact the second element to generate a braking torque.

Abstract: A brushless motor that can uniformly wind a coil winding at a low cost even with a stator core in which intervals between tooth tips of a plurality of pole teeth provided in a circumferential direction of an annular section to protrude in a radial direction differ. An auxiliary tooth tip section is formed integrally on a tooth tip of a required pole tooth of a stator core in which a plurality of pole teeth are provided in a circumferential direction of an annular section to protrude in a radial direction, and in which circumferential intervals between adjacent tooth tips are not uniform, and gaps between the tooth tips of all the pole teeth of the stator core are formed uniform.

Abstract: The invention relates to a compressor for refrigerant having a compressor housing, said compressor housing being provided with a suction inlet and a pressure outlet, said compressor comprising a compression unit, arranged in a compression housing section of said compressor housing and an electric motor arranged in a motor housing section of said compressor housing, said electric motor comprising a stator arranged within a stator receiving sleeve of said motor housing section and a rotor surrounded by said stator and arranged on a drive shaft of said electric motor for rotation about an axis of rotation together with said drive shaft, said stator comprising a stator core having a stack of laminations and extending parallel to said axis of rotation from a first front side to a second front side, said stator having windings extending through said stator core and forming end windings arranged in front of said front surfaces, and a channel for guiding at least a portion of said refrigerant entering through said su

Abstract: A bearing-less flywheel both exchanges energy with a rotating flywheel using a regenerative controller via a rotating electrostatic field but also suspends the flywheel with an electrostatic field to provide a compact robust mechanism for energy storage.

Abstract: A core product includes a first core block and a second core block. The first core block includes: a first block body including a first end surface and a second end surface, and a first resin injection portion; a first solidified resin provided in the first resin injection portion; and a first gate mark integrated with the first solidified resin and protruding outward more than the first end surface. The second core block includes: a second block body including a third end surface and a fourth end surface, and a second resin injection portion; a second solidified resin provided in the second resin injection portion; and a second gate mark integrated with the second solidified resin and protruding outward more than the fourth end surface. The first core block and the second core block are stacked such that the second end surface and the third end surface face each other.

Abstract: A parallel magnetic circuit motor includes a rotor without magnets and a stator with magnets. The stator has stator poles with windings. The windings are energized on a first plurality of stator poles with current in a same first direction and the windings are energized on a second plurality of stator poles with current in a same second direction opposite the same first direction.

Abstract: A stator includes a stator core, an insulator attached to the stator core, and coil wires. The insulator includes base portions respectively surrounding outer peripheral surfaces of teeth and an outer wall portion located immediately above the core back and extending in a circumferential direction. Each of the coil wires includes coils into which each of the coil wires is wound around more than one of the teeth by concentrated winding, a connecting wire connecting the coils, and a pair of lead wires located at two ends of each of the coil wires and extending from the coils. The connecting wire of each of the coil wires includes at least one outside-passing portion extending along an outer surface of the outer wall portion on a radially outer side of the outer wall portion.

Abstract: An actuator capable of realizing a high output with a compact size is proposed. An actuator provided with a motor including a cylindrical rotor, and a reducer including an input shaft coaxial with a rotational shaft of the motor and nested in the rotor. The reducer has a cylindrical shape, the reducer further includes an output shaft coaxial with the rotational shaft of the motor, the motor further includes a stator, and the actuator is further provided with a casing which supports the reducer and the stator.

Abstract: A variable stiffening device that include a first electrode structure and a second electrode structure. The first electrode structure includes an electrode extension that extends into a cavity defined between an electrode of the first electrode structure and an opposing electrode of the second electrode structure. The first and second electrode structures may be arranged in a load-bearing state by applying a voltage thereto to electrostatically attract the electrode to the opposing electrode to press the electrode extension within the cavity. Friction between the electrode extension and engaging surfaces defining the cavity prevent the electrode extension from slipping within the cavity, thereby maintaining a structural relationship among the components of the first and second electrode structures in response to an application of a load to the variable stiffening device.

Abstract: The present disclosure provides a radially oriented solid cylindrical magnet, a method and device for molding and manufacturing the same, and a rotor and motor component using the same. The radial orientation degree of the solid cylindrical magnet is greater than or equal to 90%. A mold includes no mold core. Magnetic particles in the mold are continuously rotated in a magnetic field during molding, and an oriented magnetic field is applied during molding. The manufactured solid cylindrical magnet can be directly used as a rotor of a micro-motor to replace a conventional rotor with a radially oriented magnet ring, or can be used for producing radially oriented magnet rings with an arbitrary inner diameter, so as to obtain radially oriented magnet rings having an inner diameter less than 3 mm or even less for micro-motors.

Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.

Abstract: A stator for a rotary electric machine includes a stator core and a stator coil. The stator core includes an annular back yoke, a plurality of teeth, and a plurality of slots. The stator coil, being housed in the slots and wound around the teeth of the stator core, includes coil ends protruding from the respective end faces of the stator core in the axial direction. The rotary electric machine stator further includes an insulating sleeve which is wound around root portion of the coil end on the end face of the stator core in the axial direction and disposed along the circumferential direction of the back yoke.

Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. Field windings face to the permanent magnets directly or via the stator core on the outer and inner circumferential sides. A coil end of one of the armature windings straddles the predetermined one of the field slots and passes over the axial end face of each of the permanent magnets in the corresponding one of the field slots over which the coil end straddles.

Abstract: Simple to manufacture electric generators or motors and methods of manufacturing such are disclosed. Such devices are preferably manufactured from 2-dimensionally cut, flat stock materiel. The generator or motor has two large diameter rotors to enable, for example, useful generation of electricity at low revolutions per minute. The frame of the device includes side walls with castellated stators on the periphery of the walls. Castellated end plates removeably interlock with the stators. The rotors drive magnets past the stators in the frame of the device. In preferred embodiments, rotors are driven by human legs or arms, low speed wind, or water with low or zero water drop distance.

Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a drive unit having first and second drive components adapted to magnetically interact with each other, and a magnetic shielding at least partially surrounding the drive unit. Said magnetic shielding is formed by structural parts supporting the drive unit and/or transmitting drive movements of the drive unit, wherein such structural parts are made of a soft magnetic material. More particularly, a mounting frame and a transmitter frame together form a magnetic shielding cage which is movable as the mounting frame and the transmitter frame are movable relative to each other.

Abstract: An excitation operation brake includes a braking shaft, an armature that rotates integrally with the braking shaft, and a field core including a disc portion facing the armature. The disc portion includes an outer magnetic shielding portion and an inner magnetic shielding portion, which make a magnetic flux flowing through the disc portion bypass to the armature a plurality of times. The outer magnetic shielding portion includes a low-magnetic resistance path having a magnetic resistance smaller than the magnetic resistance of a magnetic path that bypasses to the armature.

Abstract: A connector assembly (12) for electrically and mechanically connecting via bolting, the top and bottom stator coil sections (14, 16) of an electrical generator comprising at least one pair of stator coil sections (14, 16) having spaced apart upper coil headers (18, 20) and lower coil headers (22, 24), each comprising a conductive material to provide at least two parallel paths for passing respective flows of electric current; first and second connectors (26, 28) including respective couplers (36, 38, 40, 42) for connecting the headers (18, 20, 22, 24), wherein the first and second connectors (26, 28) are electrically and mechanically isolated from one another via an air gap (34) therebetween so that none of the couplers (36, 38, 40, 42) bridge the air gap (34) and thereby allow relative movement between the first and second connectors (26, 28).

Abstract: An electronic control device includes: a circuit board including a substrate and an electrolytic capacitor connected to the substrate; a heat sink including a recess that houses the electrolytic capacitor; and heat dissipation material provided in the recess. The electrolytic capacitor has an end surface facing a bottom surface of the recess, and the heat dissipation material is in contact with the end surface and the bottom surface.