| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the number of components and reduce the cost, while warpages, deformations, etc., produced at installation work are avoided. SOLUTION: A lengthwise width L1 and a widthwise width L2 of a frame main part 1, of which an attachment frame A are consisted of are larger than a vertical width K1 and a horizontal width K2 of an attachment hole 81 formed in a wall W respectively. Therefore, when the attachment frame A is attached to a flush box 80, not only attachment pieces 3a and 3b of the frame main part 1 but also both vertical pieces 2 and 2 are pressed against the circumferential edge of the attachment hole 81. With this constitution, a region where the frame main part 1 is pressed against the wall W is extended and sufficient strength can be secured, even if a stem of conventional constitution is not used. As a result, the number of components can be reduced, and the cost can be reduced while warpages, deformations, etc., of the frame main part 1 which are produced in the installation work are avoided.</p> |
