SEAT EQUIPMENT OF CHAIR AND THE LIKE

摘要

PROBLEM TO BE SOLVED: To provide a seat equipment which can keep stable sitting position when sitting and does not concentrate pressure on particular areas of back parts, and even can change cushioning of a cushion part according to a user. SOLUTION: Stuffing with known moderate repulsion is covered with fabrics such as vinyl leather. A protrusion 17a responding to a rear seat 16b is set up on the bottom surface so that a board 16 is filled and packed. On the other hand, the top surface is ramped with a certain angle of depression from a place responding to a front seat 16f through a place responding to the rear seat 16b. An opening O of given length is constructed on the bottom surface of a place responding to a front seat 16f of the cushion part 17. A fastener F1 is fixed on the opening O which can open and shut.