Patent ID: 9601960
Date: 2017-03-21
CPC Classifications: H02K

Claim:
1. A rotating electrical machine, comprising: a rotor rotatable about a shaft; and a stator provided so as to surround the rotor, the stator comprising a stator core and a coil mounted to the stator core by winding a conductor wire around the stator core through an insulating bobbin therebetween, the stator core comprising: the insulating bobbin comprises a first insulating bobbin portion and a second insulating bobbin portion inserted onto both end surfaces of the stator core in an axial direction, respectively; each of the first insulating bobbin portion and the second insulating bobbin portion comprises: the back yoke engagement portion comprises a convex portion for the back yoke portion, which is configured to be brought into contact with an inner-diameter surface of the back yoke portion, the convex portion protruding from at least one of outer-diameter surfaces of a pair of back yoke-side coil retaining pieces opposed to the inner-diameter surface of the back yoke portion; the shoe engagement portion comprises a convex portion for the each of the shoe portions, which is configured to be brought into contact with an outer-diameter surface of the each of the shoe portions, the convex portion protruding from at least one of inner-diameter surfaces of a pair of shoe-side coil retaining pieces opposed to the outer-diameter surface of the each of the shoe portions; and the pair of back yoke-side coil retaining pieces and the pair of shoe-side coil retaining pieces are respectively biased away from the inner-diameter surface of the back yoke portion and the outer-diameter surface of the each of the shoe portions by the convex portion for the back yoke portion and the convex portion for the each of the shoe portions.