Patent ID: 7309936

Claim:
A resolver, comprising: a stator core in which a plurality of pole teeth are formed inside an annular stator core main body in a radius direction; a rotor provided inside the stator core; an insulator covering the pole teeth; a winding in which winding portions in each of which a wire is wound on each of the pole teeth through the insulator are connected with each other through a connecting wire; a winding connector including an external terminal electrically connected with the winding; and a waterproofing resin layer provided to cover the winding; wherein the insulator comprises a connecting portion formed over an entire inner circumferential side of the stator core main body and a plurality of walls for connecting wire that extend in a circumferential direction which are formed at intervals in the connecting portion; wherein the connecting wire extends along the walls for connecting wire; and wherein the insulator further comprises a groove which is located between the adjacent walls for connecting wire and formed in a width region of each of the pole tooth in the circumferential direction.