An actuation device including, a housing, a pusher supported in the housing, a spring in the housing, which biases the pusher out of the housing, a ring surrounding the pusher over a part of its axial moving range, at least one groove extending on the outside of the pusher at least in sections helically about the longitudinal axis of the pusher, a first diverting surface on the pusher between the groove and the inner actuation end, at least one locking recess on the pusher in circumferential distance to the at least one first diverting surface and being opened towards the outer actuation end, at least one second diverting surface between the locking recess and the groove, which extends obliquely with regard to the axis of the pusher, and which second diverting surface engages with the at least one projection of the ring under certain conditions.