| 摘要 |
<p>PURPOSE:To surely attach mechanical initial torque on a notch gear after being unlocked without using a special torque attaching means such as a trigger spring, etc., by attaching the mechanical torque on the notch gear by utilizing a restoring spring which moves a driving lever backward. CONSTITUTION:Since the driving lever 50 is moved backward and pressed with the restoring spring 53 and the cam part of the notch gear 38 is pressed with the driving lever 50, when the notch gear 38 is unlocked, the spring force of the restoring spring 53 is supplied to the cam pat via the driving lever 50, and the mechanical initial torque is attached on the notch gear 38. In such way, it is possible to surely attach torque on the notch gear 38 after being unlocked without using the special torque attaching means such as the trigger spring, etc., and to engage the notch gear 38 with a driving gear 40.</p> |
