Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Mitsuru Katoh

Akihito Koike

Masashi Yoshida

Shigenobu Nakamura

Mamoru Urushizaki

Akira Takasaki

Mitsuaki Taira

A stator includes a stator coil formed of electric wires which include a joined pair of first and second electric wires. The first electric wire has a lead portion led out from the radially inner periphery of a first slot of a stator core and including a crossover part. The crossover part crosses over an axial end face of an end part of the stator coil from the radially inside to the radially outside of the axial end face; the end part protrudes from an axial end face of the stator core. The second electric wire has a lead portion led out from the radially outer periphery of a second slot of the stator core. The lead portions of the electric wires are joined together with a joint formed therebetween. The joint is positioned closer to the axial end face of the stator core than the crossover part is.

Stator for electric rotating machine

A stator includes a stator coil that is formed of a plurality of electric wires each being comprised of an electric conductor having a substantially rectangular cross section and an insulating coat covering the electric conductor. The electric wires include a pair of first and second electric wires each having an end portion where the electric conductor is not covered by the insulating coat. Each of the end portions of the two electric wires includes a joined part at a distal end thereof; the joined parts of the end portions are joined together. At least one of the first and second electric wires has a bent part that is bent only once and adjoins the joined part of the end portion of the electric wire. The end portion of the at least one of the first and second electric wires includes at least part of the bent part.

The invention provides a rotary electric machine and method of manufacturing same, having a plurality of conductor segments inserted in a plurality of slots of a stator core. The conductor segments are welded together at adjacent connection ends by a welding arc so that the welding arc forms melted portions. The melted portions form vestiges that swell in a circumferential direction.

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Anjo, Japan

Mitsuru Katoh