Patent ID: 7928617
Filing Date: 2011-04-19
Classification: G01D,H02K

Abstract:
1. A resolver comprising: a rotation shaft; a resolver rotor attached to an outer circumference of said rotation shaft; and a resolver stator provided at an outer circumference of said resolver rotor and having a coil, said resolver stator including a back yoke portion, and an annular shield member provided at an outer circumference of said back yoke portion and serving to reduce a magnetic field transmitted from outside of said back yoke portion to said back yoke portion, and said shield member having an axial thickness greater than an axial thickness of said back yoke portion, wherein no gap is provided in an axial direction of said back yoke portion, and said shield member serves as a member having a function for preventing distortion of said back yoke portion when said resolver is press fitted into a hole of an outer base body for fixation.