Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Daichi Kurashige

Shingo Hashimoto

Hiroyuki Tanaka

Norihiko Akao

Hirotaka Kawaura

Takanori Ota

Shingo Sato

Osamu Nakagawa

Tetsuya Sugimoto

Hiroharu Sugiura

Daisuke Matsuo

Hisao Miyata

Kirika Yoshikawa

Hiroki Imada

Tsutomu Ogawa

Takato Harada

Yutaka Seno

A three phase stator configured with phases that are U-phase, V-phase, and W-phase. The stator is configured such that a bus bar portion includes a joint that is formed at an end and is joined to a terminal portion of a different one of the coils. A connecting portion is formed between the joint portion and the winding portion. In the coils, a first coil and a second coil serve as the two coils joined to each other by the joint portion of the bus bar portion of the first coil and the terminal portion of the second coil, and ends of the terminal portions of middle coils are the coils disposed between the first coil and the second coil are located at a height closer to the stator core than the connecting portion of the first coil in a direction of a central axis of the stator core.

Stator and manufacturing method of stator

A coil installation method for installing a coil on a tooth of a stator core to manufacture a stator for a rotary electric machine, the coil installation method including forming the coil such that a rectangular wire is wound into a generally quadrangular shape so as to form three or more winding portions overlapping in a radial direction of the stator core and such that the winding portion positioned on an outer peripheral side in the radial direction has a larger width directed in a circumferential direction of the stator core.

Coil installation method and coil installation jig

A stator configured with an annular stator core, and a plurality of coils mounted on the stator core. The bus bar portion being connected to the terminal portion of a different one of the coils of the same phase. The coil is a multi-layer coil that is formed by winding the conductor in a plurality of layers in an inside-outside direction of loops in the winding portion, and that includes on inner and outer peripheral sides of a coil end portion of the coil a plurality of lane change portions formed by the conductor. The bus bar portion is embedded in a clearance between the lane change portions of the coil of a different phase placed between the coils of the same phase which are connected to each other.

Stator with bus bar portion embedded between adjacent lane change portions and connected to terminal portion

A coil end shaping apparatus shapes a plurality of edgewise bent portions that are bent in the edgewise direction in a lead wire portion extending from one end of a coil, and includes first and second shaping dies capable of approaching each other to shape the edgewise bent portions provided on the base end side with respect to the edgewise bent portion ethat is the closest to the free end side among the plurality of edgewise bent portions, and a third shaping die capable of cooperating with the second shaping die to shape the edgewise bent portion that is the closest to the free end side.

Coil end shaping apparatus and method

Growing community of inventors

Nishio, Japan

Daichi Kurashige