| 摘要 |
PROBLEM TO BE SOLVED: To improve workability in releasing the lock of a lock mechanism by releasing a side wall erected first and a side wall erected later in a locked condition from the condition with one touch of a single hand. SOLUTION: A sidewall 2 to be erected first from a folded condition is formed with an elastic catching piece 2g for a side wall 3 to be erected later to contact. Each of the right and left areas 3g', 3g" on a lock releasing member storage area 3g formed on the outer wall face of the side wall to be erected later is formed with a lock releasing member R comprising a lock releasing main body 4 for pressing the catching piece and a lock releasing operation body 5 having an operation part 5c with the operation part facing each other. By moving the operation part of the lock releasing member closer to each other, the side wall erected first and the side wall erected later can be released from a locked condition by a touch of a hand. COPYRIGHT: (C)2003,JPO
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