| 摘要 |
<p>The spring drive for an electrical switching device has a connection shaft to which a connection spring is eccentrically coupled and on which the large wheel (16) is seated in a rotationally fixed manner. A small wheel (20), which is driven in order to stress the connection spring, interacts with said large wheel (16). The tooth system (52) of the large wheel (16) has a gap (54) in order to decouple the pair of wheels (18) when the connection spring is stressed. In order to connect the switching device, the large wheel (16) is driven in the rotation direction (D), as a result of which the tooth system (52) engages with the small wheel (20) again. In order to prevent the wheels locking up when they engage in one another, the teeth (60) of the small wheel (20) are designed in such a manner that the edges (56,58) abut against one another, radially on the outside, at a common edge (62). <IMAGE></p> |
