| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for coupling a receiving frame and a lid, which facilitates attachment/detachment of the lid without using a spring. SOLUTION: This coupling structure is provided with the receiving frame 2, the lid 1 for closing an opening 17 of the receiving frame 2, and a coupling part 3 for openably/closably coupling the receiving frame 2 and the lid 1 in such a manner that the lid 1 turns on a vicinity of a prescribed edge part 15 of the lid 1. The coupling part 3 is composed of pins 10, which are provided protrusively on the inside of the receiving frame 2, corresponding to both ends of the edge part 15, in such a manner as to face each other, and a groove part 11 which is provided in a side surface of the lid 1 in such a manner as to correspond to a position of the pin 10 and inside which the pin 10 can move relatively. The groove part 11 is composed of an upper groove 20 which is extended for termination from a part, where the pin is located in a state of closing of the lid 1, to a side of the edge part 15, a lower groove 21 which is provided apart to a lower side of the upper groove 20 approximately in parallel with a top surface of the lid 1 and reaches the edge of the edge part 15 so as to open, and a continuous groove 22 which makes the upper and lower grooves 20 and 21 continuous. The continuous groove 22 continues into the upper groove 20 on the side of the edge part 15 with respect to a position of the pin 10. The groove has a bottom wall corresponding to an end side of the pin 10.
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