DRIVE SYSTEM FOR AN AIR CONTROL SURFACE

A drive mechanism for the moving of an air guide arrangement provided at a motor vehicle from a retracted rest position into an extended operating position and vice versa which includes a toothed segment rotatably supported about an axis that is operatively connected with an adjusting lever of the air guide arrangement. In order to be able to compensate for error sources in the drive mechanism such as over-travel of the electric motor or out-of-adjustment limit switches, the toothed segment and the adjusting lever are supported separate from one another on the axis and are held in a predetermined position relative to one another by way of a spring element disposed therebetween. An entrainment member formed-on at the toothed segment further cooperates with a slot opening in the adjusting lever in such a manner that during the extension of the air guide arrangement into the operating position a rigid force transmission takes place between the toothed segment and the adjusting lever whereas during the end phase of the closing operation of the air guide arrangement, a defined elasticity is present in the force transmission.