Toyota Jidosha Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Takashi Hirakushi

Takeshi Ariyoshi

Naoto Koshino

Hironobu Saka

Shinichi Iizuka

Keiji Takizawa

Segment coils arranged as aligned in slot portions of an annular core each include a straight portion and a pair of coil end portions, and have a tip end of the coil end portion of the pair of coil end portions as a tip end portion for joint including a joint surface for joint to another segment coil. The tip end portion for joint has the joint surface in parallel to a radial direction of the annular core when viewed in an axial direction of the annular core.

Segment coil, stator including segment coil, and method of manufacturing segment coil

Each of segment coils arranged as aligned in a slot of a stator core includes a coil central portion accommodated in the slot and two coil end portions protruding outward. The coil end portion of the two coil end portions includes a pair of coil pieces formed by inclining a coil at different angles toward the coil central portion with a vertex lying therebetween. Any one of the pair of coil pieces includes in a region in the vicinity of the vertex, a recessed step portion formed from two sides in non-parallel to and at an angle with respect to an end surface of the stator core.

Segment coil, method of manufacturing segment coil, and stator including segment coil

Growing community of inventors

Osaka, Japan

Takashi Hirakushi