Window lift for a motor vehicle

摘要

The invention relates to a window lift for a motor vehicle, having a cable (12) which is guided in a loop, can move on a cable drum by means of a drive device and, via Bowden cables (9), is connected to a driver part which can be connected to the window. A tightening element (1) serves for the compensation of the cable lengthening which occurs when the cable is loaded. The tightening element contains a compression spring (8) and a latching connection via toothing arrangements (22, 23). According to the invention, the tooth width increases in the adjustment direction. Consequently, the adjustment increment becomes greater as the loading on the cable increases, with the result that seizing and bracing of the window-lifting system is prevented by a tightening element (1) in the event of overloading.