| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel which does not disturb settlement of accounts when a string is retreated in a corner of the vessel in an open state and which becomes flat when a bottom wall is folded in a closed state. SOLUTION: The string 3 passed slidably movably through a smooth movement hole 2 of an approach wall 1 is passed through a side hole 5. According as the string 3 slides and moves in the smooth movement hole 2, a folding line of a contractible wall 4 is extended or contracted to extend the contractible wall 4 flat. Since the contractible wall 4 is extended flat to move the string 3 to the side end of the smooth movement hole 2 and retreat the same in the corner of the vessel 6, the vessel 6 can be folded flat. A triangle folding line 8 is given in a line symmetry on a bottom wall 7 and the vessel is folded along the folding line 8 and a bottom folding line 15. COPYRIGHT: (C)2009,JPO&INPIT
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