| 摘要 |
PROBLEM TO BE SOLVED: To securely seal a circuit board storage box. SOLUTION: The circuit board storage box 21 consists of a fixed side case 23 and a covered side case 24. Projecting pieces 33 and 34 are formed in the fixed side case 23 and an engagement hole 33a is formed in the projecting piece 33. In addition, notches 35 and 36 are formed in the covered side case 24 corresponding to the projecting piece 33. A restricting piece 51 is formed to extend in a closed board 40 attached to the rear surface of the covered side case 24, and an engagement projection 51a is formed in the restricting piece 51. Accordingly, when the covered side case 24 is assembled to the fixed side case 23, the engagement projection 51a formed on the covered side case 24 side projects out of the box 21 via the engagement hole 33a formed in the fixed side case 23. By calking the projecting part with heat, the circuit board storage box 21 is sealed and cannot be opened unless the restricting piece 51 is cut off, etc. COPYRIGHT: (C)2003,JPO
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