CHANGING DEVICE OF DEPTH OF CUSHION OF SEAT IN STEPLESS MANNER

摘要

PROBLEM TO BE SOLVED: To constitute an air cushion and to integrate it with a seat structural body so that a side support body to be felt comfortable also exists in an extended range as well as to increase depth in a slightly expanded volume. SOLUTION: An air cushion 15 provided between a pad upper bed and a support surface 4 on a cushion front side is constituted roughly in a U shape on a plan. Its both leg sides 16 are directed toward a cushion rear edge 17 and ended at the cushion front side and placed on a side support body 5 formed of the support surface 4 a form of which is stable.