| 摘要 |
PROBLEM TO BE SOLVED: To provide a long sheet in which working removing heat strain by welding working and welding is not needed and an assembly operability is excellent, delivery workability is excellent without a large-scale component member and transport cost is also allowed to be reduced. SOLUTION: A back plate 2 of long length anchored to the inside of a side wall section and two or more seat receiving plates 3, each of which is approximately in a rectangle shape in the plane view, are included, two or more seat receiving plates 3 are arranged along the longitudinal direction of the back plate 2 on the front side of the back plate 2 by fitting the back end of the seat receiving plate 3 into the engaging groove 10 on the front of the back plate 2 and fixing the seat receiving plate using a connection locking member 16, and in this way, the adjacent seat receiving plates 3 are arranged with the side faces butted to each other. COPYRIGHT: (C)2005,JPO&NCIPI
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