Patent ID: 7755231

Claim:
A resolver comprising: a stator portion having a substantially annular shape centered about a central axis; a rotor portion arranged radially inwardly of the stator portion, including a rotor core and rotatably supported with respect to the stator portion; and a connector portion arranged to connect the stator portion to an exterior wiring; wherein the stator portion includes: a plurality of teeth arranged in a circumferential direction centered about the central axis; a core back arranged to support the teeth from radially outside of the teeth; an insulator arranged to cover a surface of each tooth and a surface of the core back; and a plurality of wires each wound around the teeth via the insulator to define a plurality of coils, and arranged to connect the connector portion with the exterior wiring; the connector portion includes: a terminal block arranged at the stator portion protruding outwardly in a radial direction; and a plurality of terminal pins arranged at the terminal block protruding in an axial direction and connected to the wires; and a wiring surface arranged at the terminal block including a groove portion which accommodates therein slackened portions of the wires, the wiring surface extends from an annular shape surface arranged substantially perpendicularly to the central axis above the core back to the terminal pins.