| 摘要 |
<p>PURPOSE: To reliably close a cover by attaching a recessed part of a receiving piece formed at the front edge facing a thin portion of a substrate, to a projected part formed on an end edge of the cover. CONSTITUTION: When a cover 17 is rotated around a thin portion 16a of a substrate 16, the thin portion 16a acts as a hinge, a first projected part 27 of the cover 17 is attached to a recessed part 19 of a first receiving piece 18 of the substrate 16, a groove 28 at the lower end of a side wall 25 of the cover 17 is attached to an attaching piece 20 of the substrate 16, and the lower end portion of the side wall 25 is sandwiched between the first receiving piece 18 and the attaching piece 20. If the thin portion 16a is damaged by the opening/ closing of the cover 17, a second projected part 30 of the cover 17 is attached to a recessed part 22 of a second receiving piece 21 of the substrate 16. If the first receiving piece 18 is broken and the first projected part 27 cannot be attached, then the second projected part 30 can be attached to the second receiving piece 21. By doing this, the cover 17 can be closed definitely.</p> |
