| 摘要 |
PROBLEM TO BE SOLVED: To provide a cover receiving metal fitting hardly allowing generation of excessive deformation, especially in a horizontal plate part extending through a slant plate part of the cover receiving metal fitting. SOLUTION: Each cover receiving metal fitting 90 includes a nearly horizontal engagement plate part 91 engaging with an engagement part, a slant plate part 92 extending aslant downward from the tip of the engagement plate part 91, and a horizontal plate part 93 horizontally extending from the tip of the slant plate part 92. A series of shapes of the engagement plate part 91, the slant plate part 92 and the horizontal plate part 93 is an arc-like shape. When the engagement of the engagement part with the engagement plate part 91 is released, the engagement part arrives in the horizontal plate part 93 through the slant plate part 92 and is loosely temporarily fixed thereat. A first bending line 912 between the engagement plate part 91 and the slant plate part 92, and a second bending line 923 between the slant plate part 92 and the horizontal plate part 93 are inclined at acute angles to radial directions of the arc.
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