CUSHION OF TYPE CONTAINING LIQUID THEREIN, ADAPTED FOR APPLICATION TO SEATBACK ETC.

摘要

[PROBLEMS] A synthetic resin cushion of type containing liquid therein, which smoothly follows a change in the attitude of a person sitting on a chair and leaning on the seatback and allows the liquid to flow in or out between adjacent regions (between liquid receiving small chambers (I-IV)) corresponding to the shape of the upper body of the person and in which the inflow or the outflow of the liquid excellently disperses body pressure from the person in response to a change in the pressure exerted by the person's back on the cushion. Even if the cushion is located on a slope surface or a vertical surface, for example, on the seatback of the chair, the liquid in the cushion does not excessively flow downward to swell the cushion. [MEANS FOR SOLVING PROBLEMS] When the liquid flows in or out between liquid receiving chambers (3a-3d) through orifices of the respective chambers, the inflow or the outflow of the liquid is controlled. Also, the liquid in the liquid receiving chambers easily moves mainly in the horizontal direction and flows in a controlled manner between the liquid receiving chambers arranged in a vertically offset relationship.