Winding method, winding apparatus, and stator

Patent metadata

Field	Value
Publication number	US-9748826-B2
Application number	US-99122109-A
Country	US
Kind code	B2
Filing date	Apr 20, 2009
Priority date	May 21, 2008
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A winding method of forming a coil by edgewise bending a flat rectangular conductor comprises a step of edgewise bending the rectangular conductor to form edgewise bending portions so that two predetermined two adjacent bent portions are formed so that an outward bulging portion to be generated by edgewise-bending of the flat rectangular conductor is generated in a concentrated manner in a side between the two edgewise bent portions, and the side having the bulging portion constitutes each of a pair of opposite sides of the coil.

First claim

The invention claimed is:

1. A winding method of forming a coil having a long side and a short side by edgewise bending a flat rectangular conductor by use of a wire guide, a first side surface supporting tool, and a support member, the method comprising:
a first step of performing edgewise bending of a first bent portion by bending a part of the flat rectangular conductor to be the long side about an outer periphery of the support member by rotating the first side surface supporting tool in the direction of clockwise about the support member after conducting a long-side feeding operation; and
a second step of performing edgewise bending of a second bent portion by bending another part of the flat rectangular conductor to be the long side about the outer periphery of the support member by rotating the wire guide in the direction of counterclockwise about the support member after conducting a short-side feeding operation,
the first step of the clockwise edgewise bending and the second step of the counterclockwise edgewise bending being alternately conducted so that a bulging portion is formed by the support member in bending the flat rectangular conductor 90 degrees about the support member in a concentrated manner in a side of the coil located between predetermined adjacent two of the edgewise bent portions.

2. A winding apparatus for forming a coil having a long side and a short side by edgewise bending a flat rectangular conductor by use of a wire guide, a first side surface supporting tool, and a support member, the apparatus comprising:
the support member for supporting an inner periphery of the flat rectangular conductor during edgewise bending of the flat rectangular conductor;
the first side surface supporting tool that is rotatable and will support a side surface of the flat rectangular conductor; and
the wire guide that is rotatable and will support the side surface of the flat rectangular conductor and be placed adjacent to the first side surface supporting tool with respect to the support member,
wherein the apparatus is adapted to perform:
a first step of performing edgewise bending of a first bent portion by bending a part of the flat rectangular conductor to be the long side about an outer periphery of the support member by rotating the first side surface supporting tool in the direction of clockwise about the support member after conducting a long-side feeding operation and
a second step of performing edgewise bending of a second bent portion by bending another part of the flat rectangular conductor to be the long side about the outer periphery of the support member by rotating the wire guide in the direction of counterclockwise about the support member after conducting a short-side feeding operation so that a bulging portion is formed by the support member in bending the flat rectangular conductor 90 degrees about the support member in a concentrated manner in a side of the coil located between predetermined adjacent two of the edgewise bent portions,
wherein the first step of the clockwise edgewise bending and the second step of the counterclockwise edgewise bending are performed alternately.

Assignees

• Matsushita Masayuki
• Harada Kenji
• Fubuki Shingo
• Toyota Motor Co Ltd

Inventors

• Matsushita Masayuki
• Harada Kenji
• Fubuki Shingo

Classifications

• Y10T29/49071

  by winding or coiling · CPC title

• H01F41/071

  Winding coils of special form (winding conductors onto closed formers or cores H01F41/08) · CPC title

• H02K15/066

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

• H02K15/045 Primary

  Electricity · mapped topic

• H02K3/18

  Windings for salient poles · CPC title