| 摘要 |
A wiper drive (2, 5) having an electric motor (2) for moving wipers (16) to and fro, is provided with a retardation switch (6) which temporarily places a resistor (40) in series with the motor to switch the electric motor (2) to a lower speed when the wipers (16) approach the ends of their wiping paths. The retardation switch (6) has contacts (38, 39) and a switching disc (36) which rotates with a crank arm (9) provided in the wiper drive (2, 5). The reduction in wiping speed at the ends of the path of movement of the wipers (16) reduces the inertia forces exerted on the reciprocating transmission (5) and thereby reduces wear and noise. <IMAGE> |
