As an arrangement to reduce an operational force to draw the drawer 3 forward from the drawer storage position 2, wherein at least a rear end side of a drawer 3 is supported in a drawer storage portion 2 in a manner movable along back and forth and a front end 3b side thereof is supported in a manner movable along back and forth by a floor F at least through a rolling supporting body, the rolling supporting body adopts a free motion rotating body 12 whose upper end 12b makes an abutting contact with a downward facing surface 3a of the drawer 3 and whose bottom end 12a contacts the floor F and the free motion rotating body 12 supports the front end 3b side of the drawer 3 with making a rolling movement at a half traveling speed of the drawer 3.