| 摘要 |
PROBLEM TO BE SOLVED: To enable the fitting of shelf boards to both side plates or supporters in a forward and upward inclining state by placing a back support member in the rear part of the shelf board, fitting the both side parts of the back support member to the both side plates or the both supporters by shelf receiving tools by means of upward movement restriction and preventing the floating of the rear part of the shelf board. SOLUTION: The back support member 3 is placed in the rear part of the shelf board 2, the both side parts of the back support member 3 are fitted to the both side plates 1 by shelf receiving tools 4 by upward movement restriction and the rear part of the shelf board 2 is prevented from floating. The back support member 3 has a horizontal width being nearly the same as the horizontal width of the shelf board 2, a bottom plate 15 for placing the shelf board 2 is formed in a lower end and also a back support plate 16 which is perpendicularly erected is formed in the front edge of the bottom plate 15. Moreover, the upper edge of the back support plate 16 is bent backward in nearly an L-shape in a cross section and thus an upper edge reinforcing part 17 is formed. Together with it, a side edge reinforcing part 18 is formed by nearly perpendicularly bending the both side edges of the back support plate 16 and also a slit hole 19 which is opened backward in parallel with the bottom plate 15 is formed in the lower part of the side edge reinforcing part 18.
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