Patent ID: 8981614
Filing Date: 2015-03-17
Classification: H02K

Abstract:
1. A stator for an electrical rotating machine including a plurality of split cores that are annularly arranged, each split core composed of a back yoke part extending in a circumferential direction, a tooth part that is centrally-directed and projecting from a middle portion of the back yoke part, and a tooth front end part located at a front end of the tooth part opposite the back yoke part, the stator comprising: a pair of insulators arranged on axial end surfaces, respectively, of the split core; and an insulating film attached to lateral side surfaces of the tooth part, for insulating the split core from a coil wound around the tooth part, wherein each insulator includes projections projecting further than the tooth front end part in the circumferential direction, slits which are provided in the respective projections to a corresponding axial end surface side of the tooth front end part and into which the insulating film is inserted, each of the slits being an aperture that penetrates through the respective projection and opens to a slot that includes the coil, and ribs formed in the respective projections, on end surface sides in the circumferential direction of the respective projections, and the insulating film inserted into the slits is folded around the ribs to extend back to a back yoke part side with the ribs inside the folded insulating film, and fixed by being interposed between the ribs and adjacent ribs, so as to provide insulation between the coil and a coil wound around a tooth part of another adjacent split core, and the insulating film is formed by bending one sheet of insulating material.