| 摘要 |
A one way clamp mechanism C is composed of a clamping section 7 provided with a clamp pawl 10 and a locking section 8 in which an outer guide 22 of the clamping section 7 is slidably provided on a smaller diameter section 31 of the locking section 8. The one way clamp mechanism C is also composed of an inclined plane 28 provided on the outer guide 22, a lock ball 33 housed in a long opening 32 of a small diameter section 31, and a first spring 34. The lock ball 33 is biased to move in a locking direction (shown by the arrow A) by the first spring 34 and the clamping section 7 is biased to move in a locking direction by a second spring 37.
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