Body pressure support cushion and auxiliary cells constituting same

Abstract

Provided are: a body pressure support cushion that has a novel structure and that is capable of implementing an excellent body pressure distributing effect, etc., through a simple structure by means of auxiliary cells which aid deformation of support cells constituting a support surface; and an auxiliary cell that has a novel structure and that constitutes such a body pressure support cushion. Thebody pressure support cushion is provided with auxiliary cells (42), each of which, within an interior space enclosed by a flexible outer membrane (46), has an auxiliary expansion-compression chamber(68) and an action chamber (66) that are defined by a flexible intermediate membrane (62), wherein the auxiliary expansion-compression chamber of each of the auxiliary cells is connected to a fluid chamber (34) of a support cell (24), while the action chamber of each of the auxiliary cells accommodates an elastic means (72) that is capable of exerting, on the intermediate membrane, a pressing force toward the side of the auxiliary expansion-compression chamber.

Description

technical field [0001] The present invention relates to a support surface configured as a body pressure support cushion including a support cell having a fluid chamber and a deformable auxiliary cell of the auxiliary support cell. Background technique [0002] Conventionally, body pressure support cushioning materials such as mattresses are known that form a support surface for placing a user by using a plurality of support cells including fluid chambers therein, and achieve distribution of body pressure. For example, Japanese Patent No. 2656817 (Patent Document 1) discloses an air bed in which a support surface is formed by a plurality of air bags (support cells). [0003] However, in Patent Document 1, in order to add flexibility and elasticity to the air bag, the air bag has a structure in which a sub-air chamber is connected. The sub-air chamber stores air in the air bag when pressure is applied to the air bag, and returns the stored air to the air bag when the pressure...

AI Technical Summary

Problems solved by technology

[0004] However, for example in Patent Document 1 image 3 As shown, the sub-air chamber shown in Patent Document 1 is composed of a rigid casing in which a cover and a pressure receiving plate are attached to a cylindrical casing, and a bag body and a spring member are accommodated and arranged in the casing, and the The two ends of the spring member are respectively fixed to the shell and the pressure bearing plate to form an extremely complex structure, the number of parts is large, and it takes a lot of time to manufacture, so it is not realistic.

In addition, since the sub-air chamber does not have the cushioning effect of the air bag, as in Patent Document 1, figure 1 If the auxiliary air chamber is arranged inside the bed frame as shown, there may be a sense of incongruity on the seat surface when the user sits upright.

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