Drive device for wiper system utilized for wiping pane of motor car, has push rod rotatably connected with crank, and spring clips holding coupling joint with tension in traveling direction of crank when moving crank to lower end position

摘要

The device (10) has a push rod (14) rotatably connected with a crank (16) over a coupling joint (30), where the push rod moves a wiper arm (20). Spring clips (28) are stretched when moving the crank to a lower end position, which corresponds to a lower turn position of the wiper arm. The spring clips hold the coupling joint with tension in a traveling direction of the crank when moving the crank to the lower end position. A slide pin or rotatably supported roller is arranged at the crank for deflecting a lever arm.