Drive device for drive bolt fitment of window, door etc has drive pinion coupled to smaller diameter gearwheel of stepped gearwheel whose larger diameter gearwheel is coupled to drive bolt

摘要

The drive device has a drive pinion (16) coupled through a stepped gear wheel pair (18) to the drive bolt (7). The drive pinion is coupled to a gearwheel of smaller diameter of the gearwheel pair and the larger diameter gear wheel (20) is coupled to the drive bolt. The drive gear has reversing means to reverse the direction of movement of the drive bolt. The reversing means have a yoke of the drive bolt guided behind the gear wheel pair seen from the rotational axis of the pinion.