RETURNABLE BOX

PROBLEM TO BE SOLVED: To provide a returnable box which has high strength against buckling to endure multiple tiers, can be reduced highly in volume to be stored in a given place in no use, thus convenient in returning, and is manufactured at low cost. SOLUTION: The first component (I) is formed by extending two end walls (2, 2) vertically from the short sides of one bottom board (1A), and extending flaps (4, 4) to the left/right from both sides of respective end walls (2, 2). The second component (II) is formed by extending two side walls (3, 3) to the left/right from the long sides of another bottom board (1B), each side wall having a doubled thickness except both sides overlapping the flaps (4, 4). The first component (I) is superposed on the second component (II), and both components are rotated around the center of the bottom boards (1A), (1B) in the bottom board plane to be bound to each other. Two end walls (2, 2) and two side walls (3, 3) are erected from the bottom boards (1A, 1B), and the flaps (4, 4) of the end walls (2, 2) are superposed and fixed on both sides of the side walls (3, 3) to form a box with an open top. This box can be reduced in volume in no use by releasing the first/second components (I), (II) from a fixed position to make them flat. COPYRIGHT: (C)2007,JPO&INPIT