Patent ID: 7895908

Claim:
A load detecting apparatus, comprising: a hollow cylindrical strain body provided with, on an outer continuous circumferential surface or an inner continuous circumferential surface thereof, plural strain detecting elements; a first member fixed to an one axial end of the strain body, and passing through an inside of the hollow cylindrical strain body from a side of the one axial end toward a side of another axial end of the strain body; a second member fixed to the another axial end of the strain body to be coaxial with the first member, and extending outside the hollow cylindrical strain body to contain the hollow cylindrical strain body; and the load detecting apparatus constructed such that when one of the second member and the first member receives a load in a direction orthogonal to an axis of the strain body, a shearing force is applied to the strain body; and wherein a first annular space is provided successively on the outer continuous circumferential surface of the first member at one radial side of the strain body; a second annular space is provided successively on the inner continuous circumferential surface of the second member at another radial side of the strain body such that the first annular space and the second annular space allow a relative shifting between the first member and the second member in a radial direction of the strain body.