Patent ID: 8566063
Filing Date: 2013-10-22
Classification: G01D

Abstract:
1. A rotation angle detector detecting a rotation angle of a detection subject, comprising: a magnetic-flux-transmitting means which is shaped like a symmetrical frame made of magnetic material, a magnetic-field-generating means disposed on an inner surface of the magnetic-flux-transmitting means symmetrically with respect to the symmetrical plane; and a magnetism-detection means disposed between the first wall and the second wall in such a manner as to relatively rotate with respect to the magnetic-field-generating means and the magnetic-flux-transmitting means according to a rotation of the detection subject, the magnetism-detection means having a detection surface which detects a magnetic flux, wherein the magnetic-field-generating means is disposed on only the inner surface of the first wall, and the magnetic-field-generating means is magnetized in a direction orthogonal to the first wall.