Mitsubishi Electric Corporation

Yoshiki Kuwahara

Fumitaka Totsuka

Masaya Inoue

Masashi Nakamura

Akihiro Yamamura

Shogo Okamoto

Yoshiaki Kitta

Shinichiro Yoshida

Koichi Ojima

Ryuji Kitamura

Ken Nishikawa

Ryuichi Kitora

Yuki Yamamoto

Yutaka Ikura

Kota Katsuragi

Satoru Nakada

Kota Hirohashi

Kohei Kawata

Seokho Kim

Yuki Michimuko

Provided is a rotor for a rotating electric machine, including: a rotation shaft member; a rotor core; a first end plate and a second end plate; and a first fixing member and a second fixing member. The first end plate is arranged between the rotor core and the first fixing member in the axial direction. The second end plate is arranged between the rotor core and the second fixing member in the axial direction. At least one of the first fixing member or the second fixing member includes an inner peripheral portion, and an outer peripheral portion provided on an outer side with respect to the inner peripheral portion in the radial direction. Rigidity of the outer peripheral portion is lower than rigidity of the inner peripheral portion. The outer peripheral portion is in contact with the first end plate or the second end plate.

Rotor for a rotating electric machine including end plates and fixing portions

The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.

Joining body

A rotating electrical machine includes a rotor; a stator having a core annularly arranged facing the outer peripheral surface of the rotor, a coil wound around the core and having a coil end formed protruding from an end surface in the axial direction of the core, and an insulator formed on the end surface in the axial direction of the core and insulating the core and the coil; a bus bar arranged on the outer peripheral side of the coil end of the stator; and a terminal block installed on the outer peripheral side of the bus bar for introducing an electric current from an external power source to the stator, and the insulator has a groove portion in which the bus bar is held, and a terminal block housing portion in which the terminal block is held.

Rotating electrical machine

A rotating electric machine includes a rotor, a stator, and a case, wherein each of the sub stator cores has a first insulated bobbin, a stator iron core, a second insulated bobbin, and a coil, and the coil is disposed in teeth parts of the first insulated bobbin, the stator iron core, and the second insulated bobbin, all of which are stacked in layers, and the first insulated bobbin has three ring holding parts which are formed in a core back part and extend to a circumferential direction, and the bus rings are separately inserted into the ring holding parts formed in the first insulated bobbin, and the first insulated bobbin, the stator iron core, and the second insulated bobbin each has a convex part formed at one side face of the core back part and a concave part formed at the other side face of the core back part.

Rotating electric machine

It is realized that a shape of a bus ring is simplified, and a rotary electric machine is downsized. A coil connecting portion, which is protruded from bus ring maintaining portions to a shaft direction, is provided at a bus ring, and coil terminals are arranged in such a way that the coil terminals are protruded toward an outer side in a diameter direction with respect to the coil connecting portion, and the coil terminals and the coil connecting portion are connected by performing a resistance welding process. Thereby, it is not required that a slit and a bent portion or the like are formed at a tip of the bus ring, and a shape of the bus ring is simplified. Moreover, a welding board for a welding process and a chuck board for a connecting portion are not required, so that a rotary electric machine can be downsized.

Rotary electric machine and manufacturing method thereof

A plurality of bus rings, which are arranged at bus ring maintaining portions, include coil connecting portions, which are protruded in an outer direction in a shaft direction of a stator core with respect to the bus ring maintaining portions, and terminals of coils of a stator are bent in an outer direction in a diameter direction of the stator core in a state where end surfaces of wall portions of bobbins are used as base points, and are connected to the coil connecting portions of the bus rings, and the end surfaces of the wall portions are protruded in an outer direction in a shaft direction of the stator core with respect to end surfaces of the bus rings, and are positioned in an inner direction in a shaft direction of the stator core with respect to end surfaces of the coil connecting portions of the bus rings.

Rotary electric machine

Joining method, joining body, stator for dynamo-electric machine, and method for manufacturing stator for dynamo-electric machine

A coil groupG is composed of windingsU toW for U phase, V phase, and W phase. One endsUtoWof the windings for the respective phases composing the coil groupG are connected to respective power supply bus barsU toW, and the other endsUandWof the windings for the phases positioned at both ends in the circumferential direction in the coil groupG extend toward the other endVof the winding for the rest of the phases, whereby the other endsUtoWof the windings for the respective phases are mutually connected.

Growing community of inventors

Tokyo, Japan

Yoshiki Kuwahara