| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lock mechanism for a turning fence, which allows a turning fence to be turnable by pulling-up the turning fence and to be fixed at a prescribed angle by pulling-down the turning fence, and acts not to allow the turning fence to be pulled-up even when force to pull-up the turning fence is erroneously operated. <P>SOLUTION: The lock mechanism (2) includes a displacement mechanism (5). The displacement mechanism (5) holds the turning fence (6) step by step at prescribed angle when a projection is fitted to a recess, the projection and the recess being respectively arranged in a fitting reception member (9) fixed to a fixed fence (4) as the bar (1) for movement and in a fitting member (12) fixed to the turning fence (6). The lock mechanism (2) for holding the fitting state of the displacement mechanism (5) is configured to lock the vertical movement of the turning fence (6) by limiting the movement of spherical members (13) in a through-hole which is formed by the fitting reception member (9), the fitting member (12) and a release rod (15) with the use of the vertical movement of a release boss (17) inside the through-hole. <P>COPYRIGHT: (C)2010,JPO&INPIT |
