Abstract: Torsion spring device includes an outer housing, an inner housing located in the outer housing, and an elastic element. The elastic element supports the inner housing relative to the outer housing such that a restoring force is built up between the outer housing and the inner housing as a result of a deflection caused when the outer housing and the inner housing are rotated relative to one another. The restoring force-deflection curve can be adjusted by a choice of shape and/or material of the outer housing, of the inner housing, and of the elastic element and/or wherein the hysteresis can be adjusted by a choice of shape and/or material of the outer housing, of the inner housing and of the elastic element.