Patent ID: 9748826
Date: 2017-08-29
CPC Classifications: H01F,H02K,Y10T

Claim:
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.