| 摘要 |
PROBLEM TO BE SOLVED: To enable exchange of cover and string by arranging the first attachments on both ends of cover and string and arranging the second attachments for attaching corresponding to the first attachments on the front side and the back side of the case body. SOLUTION: The upper cover 2 can be attached to the case body 1 by fitting a female hook 6 to a male hook 5, and reversely the upper cover 2 can be detached from the case body 1 by detaching the female hook 6 from the male hook 5. Similarly, a string 3 can be attached to the case body 1, and reversely can be detached from the case body 1. Since a side cover 4 has a female hook 6, the side cover 4 can be attached to the body 1 by fitting the female hook 6 to a male hook 5. Reversely, the side cover 4 can be detached from the body 1 by detaching the female hook 6 from the male hook 5.
|
