Asmo Co., Ltd.

Noriyasu Nishio

Yoshimasa Kinpara

Akihiko Seki

Takenobu Kawakami

Takahiro Yamamoto

Norifumi Suzuki

Kenichi Sugibayashi

Tsuyoshi Suzuki

Teruhisa Tateiwa

Kazuo Kato

Yasuhiro Kanematsu

Toshiyuki Natsume

A commutator includes an insulating section that is formed in a tube shape including a shaft insertion hole through which a shaft is inserted, and that is formed with an indented portion in an end portion at one side in an axial direction of the shaft. The commutator also includes plural segments that are supported by an outer peripheral portion of the insulating section, that are arrayed around a circumferential direction of the insulating section with spacings therebetween, and that are each provided with an anchor portion at an end portion at the one side in the axial direction of the shaft. The commutator also includes a first, second, third short-circuit wires, each connecting the anchor portion of respective one segment to the anchor portion of respective another segment, and at least a portion being disposed inside the indented portion formed at the insulating section.

Commutator, motor, and manufacturing method of commutator

A stator includes a core having a plurality of slots and a plurality of U-shaped conductors, which are inserted in the corresponding slots. Each of the conductors has a pair of legs and a joint portion that connects the legs together. Each slot receives four legs and each of the legs in the slot is one leg of the corresponding one of the conductors. Two of the four conductors corresponding to the four legs inserted in each slot are overlapped with each other at the joint portions as viewed at least circumferentially.

Stator having conductors that are overlapped with each other at joint portions in a circumferential direction, motor having the stator, method for manufacturing the conductors and method for manufacturing the stator

An armature core of a stator has an annular portion and a plurality of teeth extending radially from the annular portion. A segment coil is configured by electrically connecting a plurality of segment conductors together. The segment conductors extend axially through slots S, each of which is defined between each adjacent pair of the teeth. Each of the teeth has a width adjustment portion for decreasing a slot width in a direction perpendicular to a radial direction in the radially inward direction.

Stator and motor

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Kosai, Japan

Noriyasu Nishio