| 摘要 |
<p>The mechanism (1) has a set of gear wheels (3-7) connected to an electric motor (2) to move the hands forward or backward on each actuation of the electric motor. A locking device (20) includes a piezoelectric actuator (21) for locking a wheel between actuations of the electric motor in a rest mode via a bolt (22). The piezoelectric actuator releases the set of gear wheels when actuated by electrical signal at the moment of each actuation of the electric motor to move the hands forward or backward.</p> |
