| 摘要 |
PROBLEM TO BE SOLVED: To attach a rear side surface board to support legs with good appearance by providing an opening recessed part outward in each support leg in a vertical direction and positioning the rear side of the front end edge of the rear side surface board inside the recessed part in the case the board is fixed when the rear side surface board is attached to left and right support legs for supporting a top plate. SOLUTION: When the rear side surface board 2 is attached to the support legs with an attachment angle, metallic support fixtures 8 are fixed to the front surface 2b of the rear side surface board 2 at first. Then an engagement piece on the inner surface of metallic receiving fixtures 9 is engaged with an engagement groove 13a at the side of the metallic support fixtures 8, the metallic receiving fixtures 9 are fitted to the abutment piece 12 of the fixtures 8 from a front part and the fixtures 9 are fixed to the metallic support fixtures 8 through the use of a bolt 14 by prescribed angle. Then the hook part 20 of the fixtures 9 is inserted to and engaged with a lock hole 19 which is arranged in the recessed part 5 formed in an aggregate 3 which is attached to the rear part of each support leg 4 and the rear surface board 2 is attached to the support legs 4 so as to be freely attachable/detachable. In this case, the rear side of the front end edge of the rear side surface board 2 is positioned inside the recessed part and not exposed to an outer part.
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