| 摘要 |
An actuator device (1) for a bicycle gearshift, comprising: an articulated quadrilateral mechanism (10) intended to be integrally fixed to a bicycle frame and to a derailleur of the gearshift, a motor member (2) acting on the articulated quadrilateral mechanism (10) to deform the articulated quadrilateral (10), thus causing the displacement of the derailleur and a support element (5) for the motor member (2) associated with the articulated quadrilateral (10). According to the invention, one of the motor member (2) and the support element (5) comprises at least one jutting element (8) and the other of the motor member (2) and the support element (5) comprises at least one seat (6) adapted to receive said jutting element (8). In such a way the motor member (2) is associated with the support element (5) so as to prevent mutual translations in the axial direction in any operating or climatic condition. <IMAGE> |
