| 摘要 |
<p>PURPOSE:To absorb impact forces from an output shaft side by providing a hollowed projecting portion to an output gear provided to the output shaft, and providing a plate fixed to the output shaft with a recessed portion to be engaged with the output gear, and elastically engaging them with each other. CONSTITUTION:An actuator using a motor is formed by a clutch input gear 21 to be connected to a motor shaft 4, a roller 22, a clutch output gear 24 and other members etc. A projecting portion 26a is formed in an output gear 26 in such a manner as hollowing the gear 26 which meshes with the output gear 24 during deceleration. A recessed portion 27a is provided in a plate 27 fixed to an output shaft and the projecting portion 26a of the output gear 26 is elastically engaged therein. When impact forces from a door locking mechanism are transmitted to an output shaft 4 the projecting portion 26a of the output gear engaged in the recessed portion 27a of the output shaft is elastically deformed to absorb the impact forces. The output gear 26 and the output gear 24, etc., are thus prevented from being damaged.</p> |
