Actuating device

The device has a drive unit with an electric motor and a drive shaft (9), a gearbox unit driven by the drive shaft with a worm (11) on a worm shaft (10) that engages a worm wheel (15) and a driven shaft coupled to the component to be driven, whereby the final control element is moved to at least one end position by turning the drive unit. The worm wheel has at least one pressing surface (23) that contacts at least one corresponding stop surface (25) in the axial direction of the shaft in at least one of the end positions and transfers an axial force to the worm.