Patent ID: 8664949

Claim:
A resolver comprising: a resolver rotor attached to a rotational shaft; an annular resolver stator that is provided on a radially outer side of the resolver rotor and that has a plurality of teeth each opposed, across a clearance, to an outer peripheral face of the resolver rotor and circumferentially arranged at given intervals; and a case member having a cylindrical fit portion to which an outer peripheral face of the resolver stator is fitted, wherein at least three protrusions, each protruding radially outward, are formed at given circumferential intervals on the outer peripheral face of the resolver stator, so that the outer peripheral face of the resolver stator is press-fitted to an inner peripheral face of the fit portion at positions at which the protrusions are formed; and a rib is formed on the outer pheripheral face of the fit portion, the rib extending radially outward from the outer peripheral face of the fit portion, and wherein the rib is formed by bending an axial end portion of the fit portion.