| 摘要 |
In the present invention, a lock pin 6 is temporarily fixed on an upper cover 2 in advance. Then, the upper cover 2 and a lower cover 3 are connected together by inserting a wall 10 between a pair of walls 4 and 5 and by aligning holes 7 and 8 with a hole 11. By pushing a release button 9 under this condition, the temporarily fixed lock pin 6 is inserted into the holes 7, 8 and 11 and is set at a predetermined connecting position. Thus, the upper cover 2 and the lower cover 3 are mechanically connected by the lock pin 6. As the result, the upper cover and the lower cover can be relatively easily and reliably connected together without requiring a special tool. The cover is not easily disassembled by outsiders, and good external appearance can be provided. |
