Coil installation method and coil installation jig

Patent metadata

Field	Value
Publication number	US-10027208-B2
Application number	US-201414901901-A
Country	US
Kind code	B2
Filing date	Jul 24, 2014
Priority date	Jul 31, 2013
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

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.

First claim

The invention claimed is:

1. 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 comprising:
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, and
holding the plurality of winding portions in a sandwiching manner in the radial direction, an innermost peripheral winding portion of the plurality of winding portions disposed at an innermost peripheral side in the radial direction and an outermost peripheral winding portion of the plurality of winding portions disposed at an outermost peripheral side in the radial direction are restrained in the circumferential direction, and the innermost peripheral winding portion and the outermost peripheral winding portion are moved relative to each other in opposite directions in the circumferential direction to deform the coil when the coil is installed on the tooth.

2. The coil installation method according to claim 1 , wherein
four corners of the innermost peripheral winding portion of the generally quadrangular shape are restrained in the circumferential direction of the stator core and an axial direction of the stator core, and at least two corners of the outermost peripheral winding portion of the generally quadrangular shape are restrained in the circumferential direction and the axial direction.

3. The coil installation method according to claim 1 , wherein
the coil that has not been installed on the tooth yet is deformed and then recovered from the deformation during or after installation on the tooth.

4. The coil installation method according to claim 2 , wherein
the coil that has not been installed on the tooth yet is deformed and then recovered from the deformation during or after installation on the tooth.

5. The coil installation method according to claim 1 , wherein
an inner-peripheral-side support is used to support the innermost peripheral winding;
an outer-peripheral-side support is used to support the outermost peripheral winding portion of the plurality of winding portions; and
a coil deformer is used to move the inner-peripheral-side support and the outer-peripheral-side support relative to each other in opposite directions in the circumferential direction,
the inner-peripheral-side support and the outer-peripheral-side support are configured to hold the plurality of winding portions in the radial direction in a sandwiching manner and restrain the innermost peripheral winding portion and the outermost peripheral winding portion in the circumferential direction, and
the coil deformer is configured to move the inner-peripheral-side support and the outer-peripheral-side support relative to each other to deform the coil supported by the inner-peripheral-side support and the outer-peripheral-side support when the coil is installed on the tooth.

6. The coil installation method according to claim 5 , wherein
the inner-peripheral-side support is configured to restrain four corners of the innermost peripheral winding portion of the generally quadrangular shape in the circumferential direction of the stator core and an axial direction of the stator core, and
the outer-peripheral-side support is configured to restrain at least two corners of the outermost peripheral winding portion of the generally quadrangular shape in the circumferential direction and the axial direction.

7. The coil installation method according to claim 5 , wherein
the coil deformer is configured to move the inner-peripheral-side support and the outer-peripheral-side support relative to each other to deform the coil that has not been installed on the tooth yet and to restore the coil from the deformation during or after installation on the tooth.

8. The coil installation method according to claim 6 , wherein
the coil deformer is configured to move the inner-peripheral-side support and the outer-peripheral-side support relative to each other to deform the coil that has not been installed on the tooth yet and to restore the coil from the deformation during or after installation on the tooth.

Assignees

• Aisin Aw Co
• Toyota Motor Co Ltd

Inventors

• Hashimoto Shingo
• Tanaka Hiroyuki
• Imada Hiroki
• Kurashige Daichi
• Miyata Hisao
• Yoshikawa Kirika
• Ogawa Tsutomu
• Harada Takato
• Akao Norihiko
• Sugimoto Tetsuya
• SENO Yutaka
• Kawaura Hirotaka

Classifications

• H02K15/066

  inserted perpendicularly to the axis of the slots or inter-polar channels · CPC title

• H02K15/085

  by laying conductors into slotted stators · CPC title

• H02K15/04 Primary

  of windings prior to their mounting into the machines (insulating windings H02K15/10, H02K15/12) · CPC title

• H02K15/0435 Primary

  Electricity · mapped topic

• H02K15/043 Primary

  winding flat conductive wires or sheets · CPC title