To provide a structure by which a leg body and a connecting rod, etc., are used without unpleasant to them.

Left and right leg bodies 5 for supporting a top plate 2 comprises a rear leg 7 whose upper part 7a is inclined to the front and a front leg 6 provided with an upward inclined part 8 inclined to the front at the almost same angle as the rear leg 7 and a downward inclined part 9 bent forward and downward in a chevron shape in a face view from the lower end of the upward inclined part 8 to a floor surface. The rear leg 7 is arranged on the inner side in the horizontal direction of the front leg 6, the upward inclined part 8 of the front leg 6 and the side face of the upper part 7a of the rear leg 7 which are piled up are fixed, and the rear leg 7 and the front leg 6 are integrated.

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