Patent ID: 9000758
Filing Date: 2015-04-07
Classification: G01D

Abstract:
1. A rotation angle detecting device comprising: a rotation member; a magnet fixed to the rotation member and rotating in association with rotation of the rotation member; a magnetism detecting package placed opposite to the magnet and including a magneto-electric conversion element detecting a magnitude of a magnetic field of the magnet in the rotation of the magnet; a housing having a first accommodating portion rotatably accommodating the rotation member and a second accommodating portion accommodating the magnetism detecting package with a partition serving as a reference; a filling member made of a resin filled to accommodate and hold hermetically the magnetism detecting package in the second accommodating portion; and a cylindrical metal member provided for the first accommodating portion to rotatably support the rotation member such that a portion of the cylindrical metal member is exposed in the second accommodating portion, wherein a creepage distance extending portion is provided near the portion of the cylindrical metal member exposed in the second accommodating portion at a portion contained in the housing, the creepage distance extending portion preventing the filling member from being introduced between the cylindrical metal member and the housing.