JPS5819206A - Fluid cushion - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention can be used as a cushion for bedding, cushions, etc.

The present invention relates to a fluid cushion in which a sealing body made of an elastic material containing a compressible fluid is provided with an over-expansion prevention means, which equalizes contact surface reaction force and allows stepless adjustment of buffering capacity.

Conventionally, there have been metal springs, synthetic resin materials such as styrofoam, natural cotton feathers, etc. as shock absorbing means, but the reaction force of these shock absorbing means increases in proportion to the amount of deformation of the contact surface, and therefore local This caused a strong feeling of pressure, and because the buffering capacity was uniformly set, it was not possible to change the buffering capacity according to each person's weight or preference, which was extremely inconvenient. .

Therefore, the purpose of this invention is to create a fluid cushion that can uniformize the contact surface reaction force with an extremely simple structure, adjust the cushioning capacity steplessly, and provide seating and sleeping comfort that suits each person's preference. It is in the realization.

Embodiments of the present invention will be described below in detail and specifically based on the drawings. In the first embodiment shown in FIGS. 1 to 3, the cushion 2 is made of an elastic material such as rubber or synthetic resin and is hollow and is used as a sealed body 4. In the central part of the cushion 2, that is, in the first embodiment, since the cushion 2 is circular, an over-inflation prevention means 6 is provided at the center of the circle. In other words, the over-expansion prevention means 6 includes a chain or the like between the locking fitting lO provided on the front wall 8 and the locking member 14 provided on the back wall, as shown in an enlarged view in FIG. A cable 16 is attached to the cable. When forming the sealing body 4, if the thickness of the front wall 8 is t and the thickness of the side wall 18 is T, then the thickness of the front wall 8 is T) t, and the front wall 8 portion is thin. This creates a comfortable cushioning effect. Also, the back wall 1 is attached to the pedestal 20 by a presser metal fitting 22.
Press the 2 parts.

Fix the sealing body to the pedestal with a fixing tool or the like. Further, the presser fitting 22 is provided with a sealing valve 26, which seals a compressible fluid such as air into the sealing body 4.

In addition, when forming the presser foot A22, as shown in FIG. The sealing member 4 is configured to prevent damage, rupture, etc. of the sealing body 4 due to further contraction in contact with the means.

Next, the effect will be explained. If a compressible fluid such as air is sealed in through the filling valve 26, the sealing body 4 will function as the cushion 2. At this time, the locking metal fitting 10.
Locking member 14. Over-expansion of the sealing body 4 is suppressed by the over-expansion prevention means 6 constituted by the cable 16, and the thickness of the seal is regulated by appropriate expansion. This is good 1
For example, when this cushion is used as a seat cushion, the weight of a person is supported by a compressible fluid, and a comfortable cushioning effect can be obtained by increasing the air pressure t-vI4Ri excessively. Further, when a load exceeding the cushioning capacity is applied to the cushion 2, the over-expansion prevention means 4 functions to prevent the sealing body 4 from bursting.

At this time, if the length of the leaves 16 of the over-expansion prevention means 6 can be adjusted by an appropriate means (for example, by pulling them toward the back wall 12), it is possible to adjust the length of the leaves 16 in the sealing body 4. The pressure of the sealed fluid can be changed, and the buffering capacity can be easily changed.

4 to 6 show a second embodiment of the invention.

The feature of this embodiment is that the sealing body 4 is formed into a rectangular shape in a plan view, and a plurality of over-expansion prevention means are provided at predetermined intervals. The second feature is that the locking fitting 10 of this over-expansion prevention means is the first member, and the locking member 14 is the second member, so that over-shrinkage is prevented by abutting the two. 1st member 10&, 2nd member
The point is that member 14 & was made to function. Further, as the cable 16, unlike the first embodiment, an ordinary string is used.As is clear from the detailed description, the present invention can achieve the following remarkable effects.

(1) The buffering capacity can be adjusted steplessly by setting the fluid encapsulation pressure, that is, the encapsulation pressure, and the thickness of the sealing body wall, and by setting the overexpansion prevention means to appropriate values. Therefore, any cushioning effect can be achieved, and it can be widely used as a cushion for seat odor, bedding, etc.

(2) Since a cushioning effect is obtained by the fluid, the reaction force on the contact surface acts evenly, and there is no localized feeling of pressure, which is healthy.

(3) The cushion according to the present invention has an extremely simple structure, is inexpensive, and has a long service life because it is compatible with compressible fluids such as air.

Note that this invention is not limited to the above embodiments, and can be modified in various ways.

For example, it is also possible to arrange a simple pressure needle in this sealed body so that the cushioning effect can be visually observed, and to capture each person's preferred sensation as a numerical value.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a plan view of the cushion, FIG. 2 is a sectional view taken along the line IIlfs in FIG. 1, and FIG. 3 is an enlarged view of the over-inflation prevention means. FIG. Figures 4 to 6 show the second embodiment, with Figure 4 being a plan view and Figure 5 being a plan view.
The figure is a v-vss sectional view of FIG. 4, and FIG. 6 is an enlarged sectional view of the over-expansion and over-expansion prevention means portion. In the figure, 2 is a cushion, 4 is a sealing body, and 6 is an over-inflation prevention means. Agent: Yoshimi Saigo, Patent Attorney

Claims (1)

[Claims] A fluid cushion characterized in that an over-expansion prevention means is provided in a sealed body made of an elastic material that encloses a compressible fluid.