Patent ID: 6260422
Filing Date: 2001-07-17
Classification: G01L

Abstract:
A torque sensor for sensing torque applied to a shaft that is rotatably supported in a housing, the sensor comprising:a magnetostrictive member fixed to the shaft;an exciting coil for generating magnetic flux running through the magnetostrictive member;the magnetostrictive member being strained by the torque applied to the shaft, wherein a generated flux varies in accordance with the strain of the magnetostrictive membera detecting coil for detecting the flux variation;a stator for incorporating the exciting coil and the detecting coil such that the coils are located about the shaft;a support for supporting the stator in the housings, wherein the support rotatably supports the stator on the shaft; anda rotation restrictor for preventing the stator from rotating relative to the housing wherein the rotation restrictor comprises:a first member attached to the stator, anda second member attached to the housing, and wherein the first member and the second member are engaged with each other.