| 摘要 |
PROBLEM TO BE SOLVED: To make a protruding part of a housing box perfectly fittable in the fitting part of a box on the lower stage even when the sizes of the housing boxes are different, and stably stack the housing boxes by a method wherein protruding parts are provided at four corners of the bottom surface of the housing box, and at least on both sides of the upper surface, a recessed part in which each protruding part can be fitted, and a fitting part comprising a recessed groove of a specified length, are provided. SOLUTION: For a CD housing box 1, at four corners of the bottom surface 2a of a box main body 2, a protruding part 4 is provided respectively, and in the meantime, on the upper surface 3a of a lid body 3, a recessed part 5 in which the protruding part 4 can be fitted, is provided at a location corresponding with the protruding part 4 being closer to the back surface, and a recessed groove 6 which extends in the direction to the recessed part 5 from a location corresponding with the protruding part 4 being closer to the front surface, is provided to form a pair of fitting parts 7. Also, for an FD housing box 8, a fitting part 14 comprising of a protruding part 11, and a recessed part 12 and a recessed groove 13, is provided in the same manner. In this case, intervals in the front and back of the protruding part 11, are smaller than the application intervals of the protruding part 4, but intervals on the right and the left of the protruding part 11 are made the same as the intervals on the right and the left of the protruding part 4. By doing so, respective protruding parts 11, 4 can be perfectly fitted in the fitting parts 7, 14 of a housing box on the lower stage, and the housing box is stably mounted. |
