Abstract: Disclosed is a stator of an EPS motor, the stator including a stator core including a plurality of teeth protrusively formed toward a center of an inner circumferential surface, a plurality of coils wound on the teeth at a predetermined counts, an insulator coupled to an upper surface and a bottom surface of the stator core to insulate the coil from the stator core, and an insulation tube situated nearest to a coil wound on an adjacent stator core and inserted into a coil wound on an outmost side of the teeth.

Abstract: A rotor casting includes a lamination stack and a cast structure including proximal and distal cast end rings respectively adjacent proximal and distal end faces of the lamination stack. Cast axial ribs are distributed radially on a peripheral surface of the lamination stack and extend between the proximal and distal cast end rings. Cast feed members extend axially from the proximal cast end ring and are respectively positioned radially between an adjacent pair of axial ribs. In one example, cast bar segments integral to the proximal and distal cast end rings are formed in axial slots of the lamination stack. In one example, a bar insert in each axial slot has insert ends that extend respectively from the proximal and distal end faces of the lamination stack and are fully encapsulated respectively in the proximal and distal cast end rings. A method of forming the rotor casting is provided.

Abstract: The fixing resin composition for use in a rotor includes a thermosetting resin (A) containing an epoxy resin, a curing agent (B), and an inorganic filler (C), wherein the content of the inorganic filler (C) is equal to or more than 50% by mass, based on 100% by mass of the total content of the fixing resin composition.

Abstract: A mechanically commutated electric motor is at least partially arranged in a closure apparatus for a housing. The closure apparatus includes at least a first rod-like throttle coil and a second rod-like throttle coil which are wound in opposite directions with coil wire and which are arranged parallel to one another. The first throttle coil is electrically directly coupled to a first coupling element provided for electrical coupling to the mechanically commutated electric motor, and the second throttle coil is electrically directly coupled to a second coupling element provided for electrical coupling to the mechanically commutated electric motor, such that, when the mechanically commutated electric motor is connected to the coupling elements and the mechanically commutated electric motor is operated, the magnetic fluxes (Phi1, Phi2) in the first throttle coil and second throttle coil at least partially compensate one another.

Abstract: A method produces a brush for a commutator motor, in particularly for a motor vehicle fan, for electrically contacting a connected contact lead to a commutator via a spring-loaded contact with a commutator. Accordingly, a brush material, particularly carbon dust, is poured into a cuboid matrix and compressed by a plunger in a contact direction for forming the brush.

Abstract: A mobile terminal can include a case, a touch screen, a haptic module to generate vibration, a memory storing data, and a power supply unit. The haptic module may be a linear vibration motor including a housing, a coil, a moving portion, first and second elastic members; the housing includes an inner space defined by top and bottom surfaces, and first to fourth side surfaces; the coil, moving portion, and first and second elastic members are in the housing; the first and third side surfaces are spaced apart from the moving portion; the moving portion includes a magnet, first and second insertion grooves; the first and second elastic members are coil springs, the first and second elastic members are between the moving portion and the first third side surfaces, respectively; and one end of each coil spring is located at the first and second insertion grooves of the moving portion.

Abstract: Disclosed is a motor, the motor according to exemplary embodiments of the present disclosure including an insulator body coupled to a stator core wound with a plurality of coils applied with powers of mutually different polarities to prevent the coil and the stator coil from being short-circuited, a terminal housing coupling unit integrally formed with the insulator body to be coupled to a terminal housing supplying an outside power by being circumferentially protruded, and a coil guide unit formed at the terminal housing coupling unit to prevent coils connected to a terminal of each polarity installed at the terminal housing from being short-circuited.

Abstract: A reluctance motor has: a stator provided with drive coils to which multiphase drive currents are inputted; and a rotor provided with a plurality of salient poles which receive primary rotating force when magnetic fluxes generated in the drive coils are interlinked with the rotor, and the rotor has: inductor pole coils which are placed on magnetic paths on which spatial harmonic components superimposed on the magnetic fluxes generated in the drive coils are interlinked with the rotor side so that induced currents can be generated in the inductor pole coils due to the spatial harmonic components of the magnetic fluxes; rectifier elements which rectify the induced currents generated in the inductor pole coils; and electromagnet coils as defined herein, and the inductor pole coils and the electromagnet coils do not serve for each other's purposes but are placed on the rotor individually.

Abstract: It is an object of the present invention, to provide a rotor-holding structure of a rotating electrical machine for hybrid-vehicle, the structure being capable of ensuring a space is present between a stator and a rotor. A rotating electrical machine includes a stator and a rotor, the stator being fixed to a housing, and the rotor being disposed opposite to stator across a predetermined space, wherein the rotor has a rotor boss section, a rotor core, and a permanent magnet. The rotor boss section is rotatably attached to the housing through a bearing. The rotor core and the permanent magnet are attached to the rotor boss section. Multiple through-holes are provided at the respective corresponding locations of the housing and the rotor boss section. A supporting member is passed through each of the through-holes, thereby holding the rotor boss section.

Abstract: There is provided a system and method for harvesting electrical energy from interaction with papers. The system comprising an electret disposed between a first electrode and a second electrode, and an interactive device connected to one end of the first electrode and one end of the second electrode to provide an electrical potential, the interactive device configured to receive the electrical potential by moving the second electrode relative to the electret for generating electrical energy. Interactive devices that can be activated by the generator can include a light-emitting diode, an electronic paper display, an infrared communication, and a buzzer.

Abstract: A mover and stator assembly of an electric machine includes at least one stator and at least one rotor. Each stator includes multiple magnetic components each including a first surface and a salient portion protruding from the first surface. The rotor includes multiple second magnetic components each including a second surface and a groove located on the second surface. The first surfaces face the second surfaces, and the width of each salient portion is less than that of each groove.

Abstract: A resonant transducer includes a resonator, a resonator electrodes connected to an end part of the resonator, at least one fixed electrode arranged in the vicinity of the resonator, and a buried part formed between the fixed electrode and the resonator electrode. The resonator, the resonator electrodes and the fixed electrode are formed by the same active layer on a substrate.

Abstract: The liquid thermosetting resin composition of the present invention comprises an epoxy resin in which at least one selected from the group consisting of a linear epoxy resin having a degree of polymerization of 2 or more and an epoxy acrylate resin and at least one selected from the group consisting of a novolac-type epoxy resin and a naphthalene-type epoxy compound are linked to each other via an ether linkage, and which has a weight average molecular weight of from 2,000 to 10,000. When the liquid thermosetting resin composition of the present invention is used for insulating a stator coil of a rotating electric machine, mechanical characteristics can be improved without causing a reduction in the heat resistance.

Abstract: A brushless motor comprising: a rotor; a stator; a position detector; and a controller, wherein the stator includes: a stator core; an insulation body; a wire of which one end side is wound on one winding target portion and the other end side is wound on the other winding target portion to form one and the other coils generating magnetic poles having different polarities in the one and the other magnetic pole portions of the stator core and of which both end portions are respectively held by a holding portion and an intermediate portion of the one and the other coils is held by an intermediate holding portion; an intermediate terminal which is attached to the intermediate holding portion to be electrically connected to the wire; and a terminal portion which is attached to the holding portion to be electrically connected to both end portions of the wire.

Abstract: A terminal block is fixed to a frame holding a stator and in phase with the stator whereas a part of an outside wire is fixed to a case. Hence, a bus bar extracted from a connection plate is welded to the terminal block hardly under the influence of a tolerance caused by integration of components and a tolerance of assembly. Even when a load applied from the outside gives rise to a phase difference between the case and the frame, a tolerance can be absorbed by the outside wire. Accordingly, a load applied to a weld portion of the terminal block and the bus bar can be reduced.

Abstract: A stator yoke is provided for a bicycle generator hub. The stator yoke includes a first tubular section and a plurality of first pole sections. The first tubular section has a first axial end and a second axial end. The first pole sections are integrally formed with the first tubular section as a one-piece, unitary member. Each of the first pole sections includes a first radially protruding section that extends from the first axial end of the first tubular section in a radial direction of the first tubular section, and a first axially protruding section that extends from the first protruding section in an axial direction of the first tubular section toward the second axial end of the first tubular section.

Abstract: A core segment sub-assembly has a first holding groove, which holds a start part of a coil wire of a three-phase winding, and a second holding groove, which holds an end part of the coil wire of the three-phase winding, at positions on an axial end surface of an annular covering part and shifted in a circumferential direction relative to a tooth covering part, on which the winding is provided. The first holding groove and the second holding groove sandwiches the tooth covering part and are separated more from each other as extending in a radially outward direction. The positions and the directions of the first holding groove and the second holding grooves are matched to the paths of the coil wire wound by a flyer type winding machine. The stator can thus be made suited to a winding process by the flyer type winding machine.

Abstract: A cooling fan is provided at an axial end portion of a rotor. The cooling fan generates a cooling air when rotated integrally with the rotor. On a stator core arranged at a position on a radially outer side of the rotor, a plurality of stator coils are arrayed in a circumferential direction of the stator core. Each stator coil includes a coil end that protrudes from an axial end surface of the stator core. A front housing covering the cooling fan includes: an exhaust port for passing the cooling air therethrough, at least part of the exhaust port being located at a position on a radially outer side of the coil end; and a recess portion opposed to the coil end in an axial direction.

Abstract: The present invention provides a permanent magnet suitable as a variable flux magnet for a variable magnetic flux motor. A permanent magnet comprising R (R is composed of 75 at % or more of Nd and 25 at % or less of at least one element selected from the group consisting of Y, Ce, La, Pr, Sm, Eu, Gd, Er, Tm, Yb and Lu), Fe and B as the main component, wherein, said permanent magnet is composed of a main phase of a crystal structure represented by R2Fe14B, a ratio of the element R to all constituent element satisfies 11.8 at %?R?12.2 at %, a cross-sectional area ratio Are of the sub-phase with a higher concentration of R than that of the main phase to the whole magnet structure satisfies 0%<Are?1.3%, and a cross-sectional area ratio Ama of the main phase to the whole magnet structure is 97%?Ama.

Abstract: Disclosed is a motor, the motor according to exemplary embodiments of the present disclosure including an insulator body coupled to a stator core wound with a plurality of coils applied with powers of mutually different polarities to prevent the coil and the stator coil from being short-circuited, a terminal housing coupling unit integrally formed with the insulator body to be coupled to a terminal housing supplying an outside power by being circumferentially protruded, and a coil guide unit formed at the terminal housing coupling unit to prevent coils connected to a terminal of each polarity installed at the terminal housing from being short-circuited.