Drive mechanism for vehicle windscreen wipers - has arrangement of arms with end-stops and spring loaded coupling to pawl arm

摘要

The drive has its pawl acting as lever (16) so that a one-piece blocking nose (20) is formed. The lever has stop projection spaced away from its linkage (17) and the crank arm carries two end-stops (23,24) limiting the movement of the crank arm (11) and located in the path of motion of the stop projection and limiting the angle of pivot between lever and crank arm. One end-stop (23) operates in a specified way. The crank arm has a curved slot whose ends form the end-stops. The stop projection of the lever consists of a bolt that moves along this slot.