Patent ID: 9004221
Filing Date: 2015-04-14
Classification: B62D,G01L

Abstract:
1. A torque sensor detecting a torque generated in a rotation member that is formed by a first shaft member and a second shaft member both of which are connected through a torsion bar, the torque sensor comprising: a magnetic member provided at the first shaft member so as to rotate integrally with the first shaft member and having different magnetic poles that are alternately arranged in a circumferential direction concentrically with a rotation axis of the rotation member; a first yoke member formed by magnetic material and provided at the second shaft member so as to rotate integrally with the second shaft member, the first yoke member having: a second yoke member formed by magnetic material and provided at the second shaft member so as to rotate integrally with the second shaft member, the second yoke member having: a magnetic sensor having a Hall device that detects a change of magnetic field between the first ring portion and the second ring portion which occurs according to a change of a relative angle between the first and second nail portions and the magnetic member in response to torsion deformation of the torsion bar, and the torque generated in the rotation member being detected on the basis of an output signal of the magnetic sensor.