| 摘要 |
<p>The system (2) has a hinge (7) projecting from a pin (4) of a frame (5) and bored by a threaded hole (8). A housing (9) is formed in a branch (3), where two transverse clearing holes are aligned in the branch along an axis (XX') and form two stages (10, 11). A screw (12) is freely introduced into one of the stages and is screwed in the threaded hole of the hinge in the housing. The screw freely projects at a screwing end in the other stage to ensure storage and free rotation of the branch on the hinge without a constraint for tightening of the screw.</p> |
