Abstract: The rotary machine is composed of the rotor having magnetic poles and the stator having the stator yoke portion constituting the iron core tooth portion wound by the stator winding and the flux flow path of the magnetic poles. The rotor is composed of a metallic material having ferromagnetic parts and non-magnetic parts as a member and has a magnetic barrier area composed of the slit portion for blocking the bypath magnetic path in the periphery of the rotor and the non-magnetic parts. The rotary machine that produced torque can be increased sufficiently and the mechanical strength during high-speed running is improved and an electrical vehicle using it.

Abstract: To provide a technology for increasing the utilization rate of the iron core material in the stator of a rotating machine and a technology to improve the space factor of the stator winding in a rotating machine. A stator is formed from a core 2 for a rotating machine comprised of a coreback 22 and a plurality of teeth 21, and a coil mold piece 1 mounted in each of said teeth 21. The coreback 22 and a plurality of teeth 21 are mounted in a separate piece, a link 213 for the teeth 21 is fit onto the corresponding teeth link 221 of the coreback 22 in order to link the coreback 22 and the teeth 21. A coil mold piece is adapted for use in a rotating electric machine, wherein the coil mold piece is compacted-shaped such that a substantial majority of wire windings are plastically deformed to minimize spacings between the wire windings, and such that at least one predetermined cross-section across the coil mold piece has a predetermined wedge shape.

Abstract: A method for manufacturing an insulated coil for use in an electromotive machine includes an aligning and winding step for forming a coil by aligning and winding a wire coated with insulating material; an insulator forming step for winding or coating an insulator around a slot inserting portion of the coil which is formed in the aligning and winding step and applying an adhesive layer between the insulator and the slot inserting portion; and a shaping step for shaping and fixing the wire and the insulator of the slot inserting portion into a unit through melting by increasing the temperature thereof and thereafter cooling the adhesive layer of the slot inserting portion 12, around which the insulator is wound or coated and applying the adhesive layer therebetween in the insulator forming step, under a restrained condition using a shaping metal mold.

Abstract: A wire bonding method and apparatus implement the flatly thinner plastic deformation for the joint section of a wire, which has a diameter ranging 100-600 &mgr;m, on its feed side, feed out and position the flatly deformed wire joint section to a target joint surface, and join the wire to it by pressing the positioned wire joint section, with vibration being applied, onto the joint surface with a ultrasonic wire bonder. A high-power semiconductor device fabricated based on this scheme has a long life of wire joints.

Abstract: The rotary machine 1 is composed of the rotor 3 having magnetic poles and the stator 4 having the stator yoke portion 41 constituting the iron core tooth portion 42 wound by the stator winding 5 and the flux flow path of the magnetic poles. The rotor 3 is composed of a metallic material having ferromagnetic parts and non-magnetic parts as a member and has a magnetic barrier area composed of the slit portion 72 for blocking the bypath magnetic path in the periphery of the rotor and the non-magnetic parts 75. The rotary machine that produced torque can be increased sufficiently and the mechanical strength during high-speed running is improved and an electrical vehicle using it.

Abstract: A wire bonding method and apparatus implement the flatly thinner plastic deformation for the joint section of a wire, which has a diameter ranging 100-600 &mgr;m, on its feed side, feed out and position the flatly deformed wire joint section to a target joint surface, and join the wire to it by pressing the positioned wire joint section, with vibration being applied, onto the joint surface with a ultrasonic wire bonder. A high-power semiconductor device fabricated based on this scheme has a long life of wire joints.

Abstract: A motor having a lap winding structure and a manufacturing method therefor, wherein inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction of the stator. All the coils are inserted in slots in succession. Further, a stator having semi-closed type slots formed by protuberances oriented in different directions, is used to control a reduction in the magnetic flux at the inlet of a slot and also to prevent coils from coming off. In a motor having coils of a plurality of phases for generating a rotating magnetic field at a stator, the contact portion of the coil of the desired phase among the coils of the plurality of phases and a portion rising from a slot toward the axis of a core are aligned and disposed to have a shape which prevents them from interferring with end portions of the coils of other phases.

Abstract: An electric motor, wherein a space factor of a coil in a stator or a rotor is enhanced, and which has a central part core comprising a plurality of laminated electromagnetic steel plates stamped out into a predetermined slot sectional shape and an end part core which is disposed on at least one end part toward a laminating direction of the central part core and a core shape of the end part core is different from the core shape of the central part core.

Abstract: For achieving small-sizing and high efficiency by improving heat radiation of coils, and further for simple-construction to be easily disassembled, thereby being environment-friendly from a view point of recycling, an electric rotating machine comprising: a stator 1a being constructed by inserting coils 10a into slots 11 of a stator core 2a; an outer frame 4 being divided into a plurality thereof, so as to cover periphery of the stator core of said stator; a pair of bearing holder portions 6a and 6b, each having a fitting portion 35a or 35b to be fitted into an inner diameter reference surface 25a at both end portions of said stator and being provided with a bearing 8a or 8b at an axial center portion thereof, and being attached at both sides of said stator core so as to cover coil end portions dropping out at both sides of said stator; a squeezing mechanism (30, 32a, 32b, 6a, 6b) fixing the outer frame at an outer periphery of the stator core, by a wedge function between each of the bearing holder portions a

Abstract: The present invention is characterized in that a rotary machine attempts to lower the resistance of each coil and realize improvement of efficiency and miniaturization of a motor by shortening the end portion of a coil to be inserted into a stator, and the constitution thereof is that the coil end portion of a stator coil has a shape that a conductor raised and looped back from a slot provided in the core on the rotor side is closer to the end face of the aforementioned core than a conductor raised and looped back in the aforementioned slot on the opposite side of the rotor, and the aforementioned constitution has a stator coil having a loopback shape passing a location other than above the adjacent slot surface.

Abstract: An amorphous magnetic core is arranged to be obtained by cutting a plurality of amorphous sheets to have a predetermined cut length by a cutter device and supplying the cut sheets to a rectangularly forming device, the sheets being supplied from an uncoiler device including a plurality of reels around which the sheets are wound, by winding the sheets of a predetermined number around a forming mandrel successively to form them into a rectangular shape, thereby forming the magnetic core, and by subjecting the magnetic core to magnetic annealing in an annealing device.

Abstract: A method of assembling a transformer core in which a lamination of rectangular plates formed of a magnetic material is inserted in the spaces in primary and secondary transformer coils, and in which the opposite ends of the lamination are brought into abutment each other to form the lamination into an annular shape. The lamination of the magnetic material plates is bent into a U-like shape with the transformer coils thereon and is magnetized by energizing the transformer coils, while the opposite ends of each magnetic material plate are restrained from being brought closer to each other. The opposite ends of the laminated magnetic material plates are successively released from the restrained state from the innermost opposed ends of the U-like shape to attract and closely contact each other by the magnetic force.

Abstract: An electric wire is wound as coil turns in slots in electric rotating machinery component such as a stator or an armature. The wire as it is supplied from a nozzle or flyer is guided by movable formers into successive layers of coil turns in the slots without forming an unwanted dead space in the slots. The formers are moved in radial increments to provide successive spaces in the slots for allowing the successive coil turn layers to be neatly laid in the spaces.

Abstract: A tension control apparatus in a winding machine for controlling tension applied to a continuous electric wire wound around a bobbin to form a perfect layer coil in such manner that tension of the electric wire is maintained substantially constant independently from variations in a feeding speed of the wire. Rotating positions of the bobbin preceding to those rotating positions by a magnitude corresponding to a time constant of brake means at which the rotation of the bobbin is to be changed among an accelerating rotation mode, a decelerating rotation mode and a constant speed rotation mode are preset in control means together with brake voltages corresponding, respectively, to the rotation modes through programming. The programmed rotating positions are each compared with a detection signal produced from detecting means for detecting actual rotating position of the bobbin.

Abstract: A perfect layer coil winding apparatus capable of automatically forming a perfect layer coil from the initial stage of winding operation without being affected by non-uniformity in diameter of a wire and width of a bobbin for winding the wire thereon is disclosed which performs the following operation: the width of the bobbin is calculated from the position of each of two flanges which is detected by each of two electric micrometer, the number of turns per layer is calculated from the width of bobbin and the diameter of wire, the winding width of the bobbin required to conduct the perfect layer coil winding from the number of turns per layer to adjust the winding width of the bobbin, the supply position of wire is adjusted on the basis of the position of first flange, the diameter of wire and the standby position of a pair of rollers, the bobbin is rotated with the wire pushed against the first flange by a push plate to start the winding operation, and when the degree of rotation of the bobbin reaches a prede

Abstract: A covered wire wrapping tool comprising a covered wire-cutting and cover-stripping device for cutting an elongated continuous covered wire into covered wires of a predetermined length and for stripping covers from a leading and trailing end portions of a severed covered wire, and a wrapping bit device including a single bit having therein an eccentric groove into which the cover-stripped leading and trailing end portions formed by the covered wire-cutting and cover-stripping device are successively loaded. The bit with the cover-stripped leading or trailing end portion loaded in the eccentric groove is rotated to wrap and connect the cover-stripped leading or trailing end portion about and to a terminal of an electrical component.

Abstract: A pick and place unit adapted to hold an article at an article feeding position, elevate the article to a predetermined height, subsequently transport the article in the horizontal direction to a place above an assembling position, let down the article vertically to the assembling position, and release the article, wherein the respective operations of elevation, horizontal movement and let-down can be effected in good order by the output of a single driving device.