Device for fixing a ball screw mechanism against rotation

摘要

In a device for fixing against rotation a ball screw mechanism (10) for producing a linear movement of a first subassembly until it rests against another subassembly, the said device comprising a ball screw (16) and a nut (14), blocking means (17) are provided which, when the two subassemblies are in contact, secure the rotating part of the ball screw mechanism against rotation by means of a reaction force brought about by an external force and the overcoming of the force of return means (18). By virtue of the fact that, with contact established, the blocking means (17) are spaced apart from the first subassembly and, when the external force occurs, the rotatable part is held secure against rotation by means of the driving device (15) until the spacing b between the first subassembly and the blocking means (17) has been taken up, the life and freedom from wear of the device are advantageously increased (Fig. 3). <IMAGE>