| 摘要 |
PROBLEM TO BE SOLVED: To provide a corner coupling structure made of a corrugated cardboard, which is connected by a simple method without using a coupling means such as a staple or the like. SOLUTION: In the corner coupling structure 1a, a side flap 21 which overlaps a female wall part 30 by folding at an adjacent edge, is provided continuously to the adjacent edge of a male wall part 20, an inserting part 22 with an inserting side engagement edge prolonged along a plane plate is formed at the front edge of the side flap, an opening part 34, in which the inserting part 22 is inserted, is formed on the female wall part 30, an opening side engagement edge prolonged along the plane plate is formed as the contour of the opening part 34, the thickness direction part of the inserting side engagement edge and thickness direction part of the opening side engagement edge are engaged in an inserted state where the inserting part 22 is inserted into the opening part 34, and also the outer surface of the inserting part 22 and the inner surface of the female wall part 30 are engaged with each other. COPYRIGHT: (C)2009,JPO&INPIT
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