| 摘要 |
PROBLEM TO BE SOLVED: To provide an attaching structure of caps which enables cost reduction in parts and in the number of assembly processes. SOLUTION: A cap 2 is provided with a lid 2A for shutting an opening 1 of a box, a hinge 2B connected to the lid 2A, and a first attaching part 2C connected to the hinge 2B. A passive second attaching part 1B, which is a passive part to be attached, is arranged on a wall 1A where the box 1 faces the outside near an opening 1a. The first attaching part 2C is composed, so as to be attachable to a second attaching part 1A (= a wall 1A) from the outside of the box 1. By swinging the lid 2A via the hinge 2B under the condition that the first attaching part 2C is attached to the second attaching part 1A, the opening 1a is opened or closed by the lid 2A.
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