Coupling device for rotary drive

摘要

A rotary part (8) has a multiple-cornered hole into which the multiple-cornered bar fits. The rotary part has a central part (14) possessing the multiple-corned hole, and a carrier part (15) radially adjacent to the central part. A coupling slide-piece (21), mounted on the central part, fits into the carrier part and has a control part (24) protruding into the hole, when in a catch-position. The coupling slide piece can be radially displaced in relation to the rotary part's rotational axis. The coupling slide piece has a protruding catch (28) fitting into a recess (29) in a catch-position