| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a locking device capable of locking a rotary shaft when necessary, while allowing rotary driving of the rotary shaft in both normal and reverse directions. <P>SOLUTION: A clutch member 52 rotates integrally with the rotary shaft 32a and it can be displace in an axial direction of the rotary shaft 32a, and a lock member 53 engages with the clutch member 52 to regulate rotation of the clutch member 52. A coil spring 54 energizes the clutch member 52 towards the clutch member 53, A torque transmitting member 55 is equipped with a boss 55a loosely inserted into a cam groove 52b provided in an outer circumference part of the clutch member 52, and rotational torque is transmitted to the clutch member 52 via the boss 55a. When a rotating direction of the torque transmitting member 55 is changed, and the boss 55b is displaced in the cam groove 52b, by this, a change-over is carried out between an unlocking state of allowing rotation of the rotary shaft 32a, and a lock state of regulating rotation. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
