Reverse rotation lock for friction coupling for connection of drive shaft with powertrain of motor car, has movable positioning device positioned by pinion, and lock unit locking rotational position produced by drive pawl

摘要

The lock has a freewheel gearing (4) determining an advance direction (5), and a drive pawl (6) adjusting a pinion (3) in an advance direction (5). A movable positioning device (7) is positioned by the pinion. A lock unit inhibits a movement in a return direction (9) of the pinion. The lock unit has a positive lock pawl and a frictional block device that allows a movement in the advance direction and inhibits the movement in the return direction. The lock unit locks a rotational position produced by the drive pawl, where the lock is formed as a one piece. An independent claim is also included for a coupling for detachable frictional connection of a drive shaft with a powertrain.