| 摘要 |
The device comprises a shaft (23) driven in rotation by a motor (13) and provided with a first threaded part (10b) which interacts with the internal screw thread (11a) of a fixed frame (11) in order to ensure the forward movement of a second threaded part (8b), the latter then screwing into the nut (18) of the plate (4) intended to cooperate with the plate (3). Elastic means (25-26) make it possible to interrupt the forward movement until the threads coincide angularly. …<IMAGE>… |
