| 摘要 |
PURPOSE: To prevent the swinging or the like at expanded parts at both left and right side parts at the time of seating and to make a seat part structure body stably supported in the state of securing a sitting feeling or the like by making the seat part structure body supported by a frame and a planar supporting body spread on the inner side and further both side parts curved and formed on the seating surface side elastically supported by a supporting member. CONSTITUTION: The seat part structure body 8 constituted by expanding both left and right side parts is formed as the laminated body of a thin seat shape by a synthetic resin panel 5, a pad material 6 and a facing material 7 and the entire seat body 1 is thinned. Also, the seat part structure body 8 is supported by the frame 2 and the planar supporting body 4 spread on the inner side and further, both side parts curved and formed on the seating surface side are elastically supported by an air mat 10 as an elastic supporting member provided with required elasticity. Thus, useless swinging or the like at the expanded parts at both left and right side parts is prevented from being generated at the time of seating and the seat part structure body is stably supported in the state of securing the sitting feeling or the like.
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