Patent ID: 9694847
Date: 2017-07-04
CPC Classifications: B62D,G01L

Claim:
1. A torque detection structure for a power steering device mounted on an automotive vehicle for detecting a steering torque by a driver, comprising: a steering shaft having an input shaft configured to rotate in synchronism with rotation of a steering wheel and an output shaft connected via a torsion bar to the input shaft for transmitting rotation from the input shaft to steered road wheels; a housing having one axial opening formed on one axial side of opposite axial directions of a rotation axis of the steering shaft and configured to accommodate the output shaft in the housing; a ball bearing having an inner race, balls, and an outer race and inserted from the one axial opening and accommodated and disposed in the housing for rotatably supporting the output shaft in the housing; a fixing member formed into a circular-arc shape or an annular shape and inserted and disposed from the one axial opening into the housing and configured to fix the outer race to the housing with the fixing member fixed to the housing in a state where one end of the fixing member has been brought into abutted-engagement with the outer race; and a torque sensor having an outside diameter set less than an inside diameter of the fixing member and configured to generate an electrical signal that changes in accordance with an amount of torsional deformation of the torsion bar, wherein the torque sensor comprises