Clamping freewheel and its use for a prosthetic part

Abstract

In a clamping freewheel having a sleeve (5) which encloses a shaft (7, 9) and in which the shaft (7, 9) is mounted in an axially displaceable manner, having rolling elements (6) which are arranged in chambers, formed between shaft (7, 9) and sleeve (5), in such a way that they roll in a first direction for a relative rotation between shaft (7, 9) and sleeve (5), whereas a torque acting in the opposite direction leads to the clamping of the rolling elements (6) in their chamber, having a transmission element (11) arranged on the shaft (7, 9), and having an actuating element (16) for the axial displacement of the transmission element (11) arranged on the shaft (7, 9), the function of the axial displacement is separated from the function of the clamping by virtue of the fact that the shaft (7, 9) consists of a hollow shaft piece (7) and an inner piece (9) axially displaceable therein, but mounted in a rotationally locked manner, and that the actuating element (16) and the transmission element (11) are arranged on the inner piece (9). As a result, the initiation of the axial displacement becomes independent of the clamping forces. A preferred field of application of the clamping freewheel consists in locking a linearly movable prosthetic part.

Dependencies are inferred from the claim text.