PROBLEM TO BE SOLVED: To fully secure the thickness of a seat cushion and improve the strength of a frame body. ;SOLUTION: Each seat part 11, 12 obtained by dividing a sofa seat 1 in two can be reversed in front centering a line of which the seat cushion S1 connects its front end both side parts and can lean a seat back S2 forward in a space formed by reversing the seat cushion S1. The frame body 2 formed approximately in a rectangle in a plan view with lining with outer peripheries of the seat cushion S1 of each seat part 11, 12 is mounted to have its back side frame 26 arranged in a position apart from a position to contact a base of the seat cushion S1 for being loaded by the seat cushion S1. A longitudinal frame 27 is mounted on an interface of each seat part 11, 12 to form a flange part to contact an inside edge lower face of the seat cushion S1 of each seat part 11, 12 for being loaded by the seat cushion S1.;COPYRIGHT: (C)2001,JPO
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