Patent ID: 7363785

Claim:
Device for locking the steering shaft of a motor vehicle against rotation comprising: a locking bolt cooperating with locking recesses of the steering shaft and a control member rotatable back and forth displacing the locking bolt back and forth radially relative to the axis of rotation of the control member between a steering shaft locking position and a steering shaft release position; said locking bolt being formed in one piece, and having a laterally protruding pin displaceably supported in the locking bolt and being spring-loaded in a direction towards the control member; said control member being provided on an end face of the control member adjacent to the locking bolt with a spiral groove which winds around the axis of rotation of the control member and which is engaged by the pin of the locking bolt; said control member having an inclined surface cooperating with the pin of the locking bolt and rising from the bottom of the spiral groove of the control member to a flat surface thereof facing toward the locking bolt, so that the pin of the locking bolt is moved out of the spiral groove of the control member against the action of its spring, when the control member is rotated into the position corresponding to the locking position of the locking bolt and no locking recess of the steering shaft is located in front of the locking bolt and the locking bolt cannot move into its locking position.