Abstract: A rotary electric machine (1000) including: a rotor (200); a stator (100) surrounding a periphery of the rotor (200); a first recessed portion (133) disposed in an inner circumferential surface of a back yoke (130) of the stator (100), and extending in an axial direction of the stator (100); and a tooth (120) having one end fitted in the first recessed portion (133), a clearance formed between the first recessed portion (133) and the one end of the tooth (120) fitted in the first recessed portion (133) being smaller in a circumferential direction of the stator (100) than in a radial direction of the stator (100).

Abstract: An axial air-gap rotary electric machine includes a stator, a coil, and a bobbin. The bobbin includes a tube and a flange. The coil is wound on the outer periphery of the tube portion with regular winding. A number of turns of each of a plurality of layers wound around an external side of a last layer in contact with the flange is at least one less than a number of turns of each of a plurality of layers wound around an adjacent internal side of the last layer.

Abstract: The moldability of the stator of an axial gap type rotating electric machine improved. The axial gap type rotating electric machine has: a stator comprising core members disposed about a rotating shaft in a ring shape with a predetermined space from adjacent core members, said core members each having a core around which a coil is wound, the number of the turns of the coil being less on the outer perimeter side than on the inner perimeter side, the core members being molded with mold material; and a rotor facing an end surface of the core in the shaft direction through a predetermined gap. The core members comprise: a first core member in which the number of coil winding layers on one side in the shaft direction is larger than the number of winding layers on the other side; and a second core member in which the number of coil winding layers on one side in the shaft direction is less than the number of winding layers on the other side.

Abstract: This invention reduces the shaft voltage of an axial-air-gap dynamo-electric machine while ensuring high output and high efficiency. Said axial-air-gap dynamo-electric machine comprises the following: a stator comprising a plurality of stator cores, each of which comprises a core and a coil, arranged in a circle around a shaft; a housing, the inside surface of which faces the stator radially; and at least one rotor, the surface of which faces the surface of the stator with a prescribed air gap interposed therebetween in the radial direction of the shaft. The rotor has, on the outside thereof, a conductive section comprising a conductive member. This axial-air-gap dynamo-electric machine has a first region where the inside surface of the housing faces the aforementioned conductive section radially and a second region, closer to the stator than the first region is, that extends to the coil side surfaces that face the rotor.

Abstract: A conventional axial gap rotary electric machine does not consider winding movement caused by resin molding in the vicinity of a lead-out part provided to a housing. In order to solve the problem, the axial gap rotary electric machine according to the present invention includes a stator which is formed by circularly arranging a plurality of core units having coils about a rotation shaft and which has a connecting wire that fastens, for each layer, coil rising wires from the plurality of core units, and the axial gap rotary electric machine has a configuration in which: the housing has a lead-out part through which the connecting wire is taken out to the outside of the housing; and the stator is arranged such that the region where the coil rising wire from the core unit is fastened with the connecting wire is located so as to avoid the region opposed to the lead-out part, the stator being integrally molded.

Abstract: Provided is an axial gap type rotating electric machine in which the distance between the stator-facing surface of a permanent magnet constituting a rotor and a stator can be uniformed even if distortion and unevenness caused by a processing error are present in a rotor base, the permanent magnet, and the like.

Abstract: The present invention makes full use of the advantages of a resin molded stator while pursuing advantages related to performance, reliability, and workability. Provided is an axial gap-type rotary electric machine comprising: a stator in which a plurality of core units having a magnetic flux surface in the rotational axis direction are arranged annularly around the rotational axis; a rotor facing the magnetic flux surfaces of the stator in the axial direction; a housing comprising an inner cylinder space in which the stator is accommodated; and a molded resin that covers part or all of the stator and integrally connects the stator and the inner circumference of the inner cylinder space. The housing comprises an annular thick wall section that has a predetermined thickness toward the axial center side and that follows the inner circumference in part of the inner circumference of the inner cylinder space.

Abstract: There is provided an axial gap rotary electric machine which includes a stator in which a plurality of core units, the core units having a core, a winding disposed in an outer periphery of the core, and a bobbin disposed between the core and the winding, are arranged in an annular shape about a rotation shaft, at least one rotor which faces an end surface of the core in an axial direction through a gap, a rotation shaft which rotates together with the rotor, and a housing in which the stator and the rotor are stored. A wiring fixing member is provided in an end surface and on an outer side of the stator in the axial direction, and includes an outer wall and an inner wall extending in a circumferential direction along a circumferential outer shape of the stator. The stator includes a crossover wire which leads the winding from the core unit. The crossover wire is disposed between the outer wall and the inner wall of the wiring fixing member.

Abstract: A conventional axial gap rotary electric machine does not consider winding movement caused by resin molding in the vicinity of a lead-out part provided to a housing. In order to solve the problem, the axial gap rotary electric machine according to the present invention includes a stator which is formed by circularly arranging a plurality of core units having coils about a rotation shaft and which has a connecting wire that fastens, for each layer, coil rising wires from the plurality of core units, and the axial gap rotary electric machine has a configuration in which: the housing has a lead-out part through which the connecting wire is taken out to the outside of the housing; and the stator is arranged such that the region where the coil rising wire from the core unit is fastened with the connecting wire is located so as to avoid the region opposed to the lead-out part, the stator being integrally molded.

Abstract: The purpose of the present invention is to ensure reliability and installation space reduction of crossover wires of an axial gap type rotary electric machine. An axial gap type rotary electric machine having: a stator which is constructed by annularly arranging multiple core units about an axis of rotation, each of the core units having at least a core, windings disposed around the outer periphery of the core, and crossover wires leading out from the windings; at least one rotor which faces an axial end surface of the cores with a gap therebetween; and a rotary shaft which rotates along with the rotor.

Abstract: This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed, centered around a rotating shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in a radial direction of the rotating shaft. The bobbin is formed in a cylindrical shape, has flange parts extending a predetermined amount in the outer circumferential direction at the top and bottom of the cylindrical shape, is provided with notch sections on the tip part in the inner circumferential direction of the flange part of the bobbin, and forms an acute angle. In addition, approximately circular notch sections are formed on adjacent side surface portions of the bobbin in the outer circumferential direction of the bobbin.

Abstract: The purpose of the present invention is to ensure reliability and installation space reduction of crossover wires of an axial gap type rotary electric machine. An axial gap type rotary electric machine having: a stator which is constructed by annularly arranging multiple core units about an axis of rotation, each of the core units having at least a core, windings disposed around the outer periphery of the core, and crossover wires leading out from the windings; at least one rotor which faces an axial end surface of the cores with a gap therebetween; and a rotary shaft which rotates along with the rotor.

Abstract: The purpose of the present invention is to control the lamination thickness of the laminated core of an axial gap rotating electric machine. The axial gap rotating electric machine is provided with: a stator comprising a plurality of core members arranged circularly about the rotational axis center, said core members each comprising a columnar-laminated core having a flux surface in a rotation axis direction, a coil disposed on the outer perimeter of the core in the radial direction, and a substantially cylindrical bobbin disposed between the core and the coil; and at least one rotor facing the flux surface with a predetermined gap interposed therebetween in the rotation axis direction. The bobbin has an inner cylinder facing the outer perimeter of the core in the radial direction, and at least part of the inner diameter of the inner cylinder becomes gradually smaller along the rotation axis direction and makes contact with the outer perimeter surface of the laminated core in the radial direction.

Abstract: An axial-air-gap rotating electric machine with a stator bobbin is provided. The bobbin renders the respective turn counts of windings in the machine the same and minimizes the lengths of connecting wires between continuous windings regardless of the continuous turn count, the direction in which each winding is wound, and whether the number of stages is odd or even. The bobbin, which has a tubular shape that substantially matches the exterior shape of a core, is provided with flanges that extend outwards from near the respective openings in the bobbin. One of the flanges has two first notches, and the other flange has a second notch. The axial positions of the starting and finishing ends of coils on adjacent stator cores are the same, and the flanges containing the notches through which the ends of the coils are run are on the same side with respect to the openings.

Abstract: This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed centering around a rotary shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in the radial direction of the rotary shaft. The rotor comprises a rotor base which is provided with a disk-shaped permanent magnet and an end portion gripping the outer circumference of the permanent magnet, and which holds the permanent magnet. The thickness of the end portion of the rotor base decreases toward the stator side. In particular, the end portion of the rotor base is formed in a tapered shape in which the thickness of the end portion decreases toward the stator side. In addition, the end portion of the rotor base is formed such that high portions and low portions are periodically provided over the circumferential direction.

Abstract: An axial air gap type electric motor includes: a stator with stator cores in a ring shape around a rotating shaft and including a laminated iron core that is a prismatic body of metal plate-like members laminated in a radial direction of the rotating shaft, a tubular bobbin with an inner diameter into which the laminated iron core is inserted, and a coil wound on the extension of the outer diameter of the laminated iron core; and a rotor plane-facing the rotating shaft direction end section of the stator with a predetermined air gap interposed therebetween. The laminated iron core includes: a core member with continuously laminated metal plate-like members, the widths of which increase in a rotational direction of the rotating shaft from the center toward a radial direction; and a core member with continuously laminated metal plate-like members, the widths of which are substantially equal.

Abstract: To ensure ready assembly of a stator and reliably reduce the shaft voltage in an axial air gap rotating electric machine, an axial air gap rotating electric machine has a circular ring-shaped stator formed by a plurality of stator cores arranged about a rotational axis direction in a ring shape. Each stator core comprises a tubular bobbin and a coil, with the tubular bobbin having an iron core inserted into a bobbin inner tubular portion substantially matching the peripheral shape of the iron core. The axial air gap rotating electric machine has a first conductive member having a horizontal portion and a vertical portion contacting the end surface of the bobbin opening portion. The horizontal portion contacts parts of the iron core outer peripheral surface and the inner peripheral surface of the bobbin inner tubular portion, and the vertical portion is conductively connected to the inner circumferential housing surface.

Abstract: The present invention provides an axial air-gap rotary electric machine with which it is possible to achieve downsizing and increased output as well as an improvement in the support strength of a molded resin and housing and a reduction in the manufacturing cost of the housing. Provided is an axial air-gap rotary electric machine having: a stator in which a plurality of core members, which have at least an iron core and a coil, are arranged in a circular shape centered around a rotating shaft and curved around the inner peripheral surface of a housing; and a rotor that faces an end surface of the iron core with a prescribed air gap therebetween in the radial direction of the rotating shaft. Therein, the housing has, in the surface facing the stator, a hole that communicates with the outside, and the stator has a resin molded portion formed by filling a resin into at least the surface of the core members facing the inner peripheral surface of the housing, and into the hole, and molding integrally.

Abstract: The present invention ensures reliability while reducing the size of an axial air gap rotating electric machine. An axial air gap rotating electric machine has: a stator comprising a plurality of core members arranged in a ring shape, said core members each having an iron core, a coil wound in an iron core outer periphery direction, and a bobbin disposed between the iron core and the coil; and a rotor plane-facing an end surface of the iron core via an air gap in a rotating shaft radial direction.

Abstract: The present invention makes full use of the advantages of a resin molded stator while pursuing advantages related to performance, reliability, and workability. Provided is an axial gap-type rotary electric machine comprising: a stator in which a plurality of core units having a magnetic flux surface in the rotational axis direction are arranged annularly around the rotational axis; a rotor facing the magnetic flux surfaces of the stator in the axial direction; a housing comprising an inner cylinder space in which the stator is accommodated; and a molded resin that covers part or all of the stator and integrally connects the stator and the inner circumference of the inner cylinder space. The housing comprises an annular thick wall section that has a predetermined thickness toward the axial center side and that follows the inner circumference in part of the inner circumference of the inner cylinder space.