| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a simple structure at a low cost. SOLUTION: A coupling member 13 is fixed to the wall face 4B of a door 4, a coupled member 11 is fixed to an opening section 2A, and the coupling member 13 is coupled with the coupled member 11 when the door 4 is rotated in the closing direction.</p> |
