| 摘要 |
The device has a displacement unit for axially moving a toothed wheel (6) between a position in which a motorization device (M) is disengaged from a reset device (R) another position in which the motorization device and the reset device are coupled with each other, where a closing spring (1) for biasing the wheel in the latter position at the end of a closing operation. The wheel includes a protuberance co-operating with a protuberance on another toothed wheel (3), so as to maintain the disengagement throughout a closing operation of a driving shaft (2). |
