Patent ID: 8763477

Claim:
An operation amount detecting apparatus that converts a rotational motion of an operation member to a linear motion of an operation rod and detects an operation amount transmitted to an operation target member, comprising: a coupling shaft that couples the operation member with the operation rod; an elastic member one side of which is supported at a support position of the operation member which is away in a direction orthogonal to an axis line direction of the operation rod with respect to the coupling shaft, the other side of which is coupled with the coupling shaft, both end portions along a longitudinal direction of which are coupled with the support position as the one side, and an intermediate portion between the end portions of which is coupled with the coupling shaft as the other side; and a detection unit that detects an elastic deformation amount of the elastic member and outputs the elastic deformation amount as an operation amount, wherein the coupling shaft and the support position are positioned on a straight line orthogonal to the axis line direction of the operation rod, and the elastic member extends along the straight line.