To self-propelled feature null self-propelled

摘要

PROBLEM TO BE SOLVED: To provide a self-propelled mechanism of a movable body, which can dramatically reduce an internal impact sound.;SOLUTION: Angles θ1 and θ2, which are made with respect to advance and retreat directions Y1 and Y2 of a slider 13 by normal lines L1 and L2 of first cam follower surfaces 21 and 22 corresponding to respective first cam surfaces 19 and 20 of the slider 13 in an advance position when a catcher 6 is in a reference position, are set as a magnitude (e.g. in the range of 85-95°) which does not make the slider 13 retreated to a retreat position against an urging force G of a lock spring 14, by a force F rotating a pair of holding arms 11 and 12 inward. An impact reaction force makes the pair of holding arms 11 and 12 and the slider 13 hardly cause a micro whirling motion and the like, and enables a dramatic reduction in a harsh internal impact sound.;COPYRIGHT: (C)2012,JPO&INPIT