Abstract: A linear motor includes a stator and a rotor. The stator includes two opposing plates, a spacing plate positioned between the plates, and a plurality of permanent magnets mounted on the two plates and spaced from each other. The rotor includes a coil portion and an assembly block. The coil portion is positioned between the two plates, and the assembly block is connected to the coil portion and next to the plates. The spacing plate defines a slide groove, and the coil portion includes a plurality of balls mounted at one surface toward the spacing plate. The plurality of balls is partially received in the slide groove in the sliding way.

Abstract: A permanent magnet DC motor with 2P magnetic poles, where P is an integer greater than 1, comprising a stator (100) with a plurality of magnetic components, and a rotor (104) configured to rotate relative to the stator. The rotor may comprise a commutator and a rotor core with a plurality of rotor teeth (106) defining a plurality of rotor grooves (108), wherein the rotor grooves accommodate a plurality rotor windings. In some embodiments, the commutator comprises a plurality m of commutator bars (Z), wherein m is an even number greater than 2. The rotor windings comprises a plurality of coil elements (W), wherein a coil element comprises two ends connecting a pair of commutator bars, such that a first pair of adjacent commutator bars is connected through P?1 serially connected coil elements, and a second pair of adjacent commutator bars is connected through P+1 serially connected coil elements.

Abstract: Provided is a rotating electrical machine wherein it is possible to sufficiently cool an electronic device attached to a rotor by means of a liquid refrigerant. A rotor for a rotating electrical machine is provided with a shaft supported in a rotatable manner, a rotor core secured to the shaft, an electronic device disposed so as to rotate along with the shaft and the rotor core, a coil wound around the rotor core and connected to the electronic device, and a cooling structure for sequentially cooling the electronic device and the coil by means of a liquid refrigerant supplied from the shaft.

Abstract: A cooling arrangement for electric machines where cooling plates are maintained against the inner surface of the stator and are interconnected by a cooling tube that carries the stator generated heat outside of the machine.

Abstract: This invention relates to a laminated core for an electrical machine, including: a plurality of laminations configured to define a channel in a surface of the laminated core for the flow of a cooling fluid, wherein the channel has a base and at least one side wall, the at least one side wall having a stepped profile.

Abstract: Each permanent magnet provided in a rotor includes a projection that projects toward a corresponding predetermined portion of the rotor core. An inner peripheral surface of each permanent magnet, which is radially opposed to the corresponding predetermined portion of the rotor core, includes a primary contacting portion and two primary non-contacting portions. The primary contacting portion contacts the corresponding predetermined portion of the rotor core at a circumferential location, which corresponds to the projection. The primary non-contacting portions do not contact the rotor core and are located on two circumferentially opposite sides, respectively, of the primary contacting portion.

Abstract: Disclosed is a voice coil motor, the motor including a mover having a bobbin equipped with a lens and a coil block secured to an outer circumference of the bobbin; a stator having a magnet that is disposed in such a way as to face the coil block; elastic members coupled to a lower end of the bobbin and connected to both ends of the coil block; a base supporting the elastic members and the stator; and a cover can covering the mover, the stator and the base, with an opening being formed in the cover can to expose the lens therethrough, wherein each of the elastic members includes a terminal portion that extends between the cover can and a side surface of the base, the terminal portion including a short-circuit prevention portion so as to inhibit a short-circuit between the terminal portion and the cover can.

Abstract: A tunnel-effect power converter including first and second electrodes having opposite surfaces, wherein the first electrode includes protrusions extending towards the second electrode.

Abstract: A stepping motor may include a rotor having a rotation shaft and a permanent magnet, a fixed body having a cylindrical stator provided with a plurality of pole teeth so as to face the permanent magnet, an urging member which urges the rotor toward one side in a motor axial line direction, a supported face of the rotor which faces the one side in the motor axial line direction, and a support face of the fixed body which slidably supports the supported face of the rotor on the one side with respect to the supported face. When a first sliding load which is a total sliding load applied to the rotor is “Ta”, a detent torque acted on the rotor is “Td”, and a dynamic torque acted on the rotor by the stator is “Te”, then “Ta”, “Td” and “Te” satisfy the following expression: “Td”<“Ta”<“Te”.

Abstract: An insulator to be attached to a laminated core of a rotating electrical machine includes a frame-shaped body which surrounds the laminated core and around which a coil wire is wound, and first and second flanges provided at both open sides of the body. The second flange has a first recess that extends toward the body.

Abstract: A holding element (68, 82) for attaching magnets (62) to a rotor (20) of an electrical machine (10). This electrical machine is, in particular, designed as an AC generator and comprises intermediate spaces (60) between the individual poles (24, 25). The holding element (68, 82) comprises a top side (72) and spring lugs (70) which axially fix the magnets (62). The holding element (68, 82) has claw-like projections (74) which bear against flanks (80) of the poles (24, 25) when the holding element (68, 82) is in the fitted state.

Abstract: A power-generating module has a base, a power-generating unit that is placed in the base, a plunger that is placed in the base and that vertically reciprocates, and a drive section that interlocks with the reciprocation of the plunger and starts up the power-generating unit. The drive section is biased to a boost-up position where the plunger is boosted up. The drive section has at least two links that turn between the boost-up position and a press-in position where the power-generating unit is started up. Both ends of one of the links are turnably supported by the base. Both ends of another link are turnably supported by the plunger. The links turn in an interlocking manner by coupling to each other.

Abstract: A motor component for coupling a motor to a work component is provided. The motor component includes a flange coupled to the motor; and an adapter coupled to the flange. The adapter includes a shaft aperture and a pattern of a plurality of through-holes disposed about the shaft aperture and configured to couple to a plurality of pads of the work component. A method of assembling an electrical machine to a work component includes coupling a motor component to a motor of the electrical machine. The method further includes aligning a pattern of a plurality of through-holes of the motor with at least one pad of a plurality of pads of the work component. The method includes coupling the pattern of the plurality of through-holes to the at least one pad of the plurality of pads of the work component.

Abstract: A motor may include a rotor having a permanent magnet on an outer peripheral face of a rotation shaft and a fixed body having a stator, an opposite-to-output side radial bearing member, and an opposite-to-output side end plate. The opposite-to-output side radial bearing member may be formed with a bearing part, a flange part, and a recessed part recessed toward an output side. An end part on the output side of the bearing part may be located on the output side relative to the end part on the opposite-to-output side of the stator, and an end part on the opposite-to-output side of the rotation shaft protruded toward the opposite-to-output side from the shaft hole may be accommodated in an inside of the recessed part and is located on the output side relative to the end part on the opposite-to-output side of the fixed body in the axial line direction.

Abstract: The present invention provides a mounting arrangement for an electric motor in a drive unit, and a drive unit incorporating such a mounting arrangement. The arrangement includes a motor casing with at least one connecting flange having an opening for receiving a connecting element. The flange is configured for fastening the motor casing to a drive unit housing via the connecting element. At least one alignment member is provided on the flange for engagement with a complementary member on the drive unit housing to align the motor casing with respect to the drive unit. The at least one alignment member is provided on or in a peripheral edge of said connecting flange.

Abstract: An electrical machine includes a rotor located at a central shaft and a stator located radially outboard of the rotor and secured at a back iron. A first baffle is coupled to the central shaft at one axial end of the rotor, the baffle extending radially outwardly from the shaft toward a baffle cavity at the back iron. A flow of coolant is urged toward the baffle cavity along the baffle via centrifugal force. A method of flowing coolant through an electrical machine includes injecting a flow of coolant substantially radially into an electrical machine cavity. The flow of coolant is urged radially outwardly along a rotating baffle located at one axial end of a rotor of the electrical machine via centrifugal force and into a baffle cavity disposed at the back iron at a radial end of the baffle.

Abstract: A core has accommodating slots each accommodating a permanent magnet. A fixing agent is injected into the space between the inner surface of each accommodating slot and the outer surface of the associated permanent magnet. A liquid-crystal polymer is used as the fixing agent. More specifically, liquid-crystal polyester is used.

Abstract: A rotor (1) comprising a plurality of alternating magnetic poles formed by permanent magnets (3) distributed regularly between a circumferential portion (5) and a central portion (6) of the magnetic body (2) of the rotor and defining circumferential pole sections (7). The circumferential portion comprises axial grooves (15) which are arranged between the pole sections facing the magnets and which form openings in recesses (4) containing the magnets. The openings have a pre-determined first width (a) such as to minimize a leakage magnetic flux (PhiL) flowing through the circumferential portion (5) and to maximize a useful magnetic flux (PhiU) flowing radially through each of the pole sections (7).

Abstract: An electronics package for an alternator includes an electrically conductive carrier member and a terminal assembly engaging the carrier member. The carrier member includes an inner side, an outer side, and at least one passage extending from the inner side to the outer side. A plurality of switches are connected to the carrier member. The terminal assembly includes an electrically insulative portion and a plurality of electrical traces extending through the electrically insulative portion. The electrically insulative portion includes a post extending through the at least one passage of the carrier member, a first shoulder engaging the outer side of the carrier member, and a second shoulder engaging the inner side of the carrier member. The post, the first shoulder, and second shoulder are all formed as a unitary component.

Abstract: Disclosed therein is a stator assembly, which includes a circular base part and a stator core having a plurality of teeth radially formed on an outer face of the base part and respectively having a tooth end portion. The stator assembly further includes: a magmate holder including a base plate, at least one inner leg and at least one outer leg formed at a lower portion of the base plate, and a power connector part formed on an upper portion of the base plate and having a joining projection formed at one side thereof; and a sensor cover including a body part and a hook formed on a lower portion of the body part and being joined with the joining projection.