ADJUSTMENT DRIVE WITH OVERLOAD CLUTCH

An actuating drive comprising an electric motor (1) and a transmission (2) with a self-locking transmission stage (3) and with an output (4), wherein the transmission (2) comprises a safety clutch (6) which is configured to separate the self-locking transmission stage (3) from the external moment in the event of an excessively large external moment, that is to say a moment introduced via the output (4), wherein the safety clutch (6) comprises a motor-side gear (10) and an output-side gear (11), wherein the safety clutch (6) uses coupling elements (15) for a form-locking connection between motor-side gear (10) and output-side gear (11), wherein the coupling elements (15) are pressed out of the form-locking connection and thus out of at least one coupling contour (7a) by the excessively large external moment in the event of an excessively large external moment, that is to say a moment introduced via the output (4), so that the self-locking transmission stage (3) is separated from the external moment, wherein the safety clutch (6) has a free travel (6a), wherein the free travel (6a) is formed by the at least one coupling contour (7a) in the motor-side gear (10) or in the output-side gear (11), wherein at least one locking element (12), which is non-rotatably connected to the other of the two gears, output-side gear (11) or motor-side gear (10), is biased by a spring element (16) against at least one locking contour (7b), so that the haptics of an external movement request (8), that is to say a movement request introduced via the output (4), is determined by the shape of the locking contour (7b) and thus a haptics-determining detent (5) is formed by the locking contour (7b).