| 摘要 |
<p>PURPOSE:To prevent the axial part of a handle from falling out of the axial cylinder part of a fixed main body in the case where a rotating angle control plate and a clamp plate are removed. CONSTITUTION:The inner periphery 4 of the shaft hole 3 of the axial cylinder part 2 of a fixed main body 1 is provided with a falling off preventing projection 5, and the rear end of the axial part 21 of a handle 19 is provided with an inserting groove 23. The falling off preventing projection 5 and the inserting groove 23 are mutually engaged to insert the axial part 21 of the handle 19 into the axial hole 3 of the fixed main body 1. After inserting, the falling off preventing projection 5 is accommodated in a circumferential relief groove 24 provided at the front end of the inserting groove 23.</p> |
