Patent ID: 10547225

Abstract:
A method for producing an electric motor provided with a stator core configured by laminating a required number of annular electromagnetic steel sheets having a plurality of tooth portions on an inner periphery thereof. The circumferential widths of the tooth portions become gradually narrower in a stepwise fashion toward an uppermost surface and an undermost surface of the plurality of laminated electromagnetic steel sheets, whereby the shoulder portions on both sides in a circumferential direction of the tooth portions smoothly change. A flexible, planar insulating member is provided having a first portion of a shape similar to a planar shape of said electromagnetic steel sheet, and further comprising flexible ear portions at positions corresponding to shoulder portions on both sides in a circumferential direction of the tooth portions. A coil is wound around the flexible planar insulating member and the respective tooth portions, including the ear portions of said insulating member interposed between the coil winding and the tooth portion, to thereby deform the flexible ear portions to conform the shape of the shoulder portions.