| 摘要 |
PROBLEM TO BE SOLVED: To prevent a cover from easily coming off a base.SOLUTION: A cover 200 and a base 400 are so arranged that a part of the cover 200 and a part of the base 400 may be superimposed. At a portion where the part of the cover 200 and the part of the base 400 are superimposed, the cover 200 and the base 400 are integrally made into one body with at least one side of the cover 200 and the base 400 penetrated with an integrating member for integrating at least the cover 200 and the base 400. Caps 201 are fixed on end parts of the cover 200 and the base 400. |
