JPH09393A - Cushion - Google Patents

Abstract

PURPOSE: To provide a cushion capable of giving always a comfortable feeling fitting precisely a user by deforming previously the cushion into a shape conformed to the seated user. CONSTITUTION: A cushion consists of a cushion material 1 and a bag body 2 composed of an air isolating material to seal hermetically the cushion material. The bag body 2 is provided with a switch valve 3 to adjust an air amount in the bag body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion, and more particularly to a cushion used in a room or a passenger compartment of an automobile.

[0002]

2. Description of the Related Art Conventionally, a cushion is made of cotton, panwa, synthetic fiber, etc. wrapped with cotton cloth, synthetic fiber, etc., and is soft and elastic. It is widely used as sitting and back sitting.

[0003]

However, due to the inherent elasticity of the cushion, even if a load is applied by sitting or leaning, if the load is removed,
It has the property of immediately returning to its original shape.

That is, when a pressing force due to the load of the user acts on the cushion, first, the cushion is deformed to the point where the pressing force and the elastic force against it are balanced, and then, the cushion fits perfectly with the pressing portion of the user. While maintaining the state of being deformed, it acts as a cushion by relaxing the load due to the elastic force remaining in the cushion. When the applied load is removed, the elastic force that resisted the pressing force causes the original It returns to its shape.

Therefore, even if the user sits down or leans back, once the cushion comes off, the cushion cannot keep the shape that fits the pressed portion of the user and returns to the original shape. If you sit down or lean back again, the cushion will deform again and you will not always be able to sit with a snug fit.

Especially, when the cushion is used in a place with a lot of vibration such as a seat of an automobile, a load is repeatedly applied by the user. Therefore, the cushion repeatedly undergoes deformation recovery every time the load is applied, so that the cushion is originally comfortable. This causes a problem that the feel is impaired.

It is an object of the present invention to provide a cushion which can be seated with a feeling of being fitted tightly and which gives a comfortable feeling.

[0008]

Therefore, in order to achieve the above-mentioned object, the invention according to claim 1 comprises a cushioning material 1,
The bag body 2 is made of an air-blocking material and has the cushion material 1 sealed therein. The bag body 2 is provided with an opening / closing valve 3 for adjusting the amount of air in the bag body.

[0009]

According to the first aspect of the present invention, when a load is applied to the cushion while the on-off valve 3 is opened, the cushion deforms according to the load, while the air inside the bag body causes the on-off valve 3 to move. Since it is discharged through, even if the load is removed after the on-off valve 3 is closed next,
The inside of the bag is kept in a reduced pressure state, and the cushion material 1 can be kept in a deformed state without being recovered by elasticity.

Further, when the opening / closing valve 3 is opened in a deformed state, that is, in a state where the inside of the bag is depressurized, air is drawn into the inside of the bag which is under a pressure, so that the cushion is a cushion. When the elasticity of the material 1 is restored, the material 1 is naturally restored to the original shape of the cushion.

Therefore, the user sits or leans on the cushion while opening the on-off valve 3 to apply a load to the cushion during use, so that the cushion is fitted to the seating of the user in advance. It can be deformed into a shape so that you can always sit with a snug fit, even when you sit down or lean back. Further, after use, it can be easily returned to the original shape by simply opening the on-off valve 3 again.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a cushion according to this embodiment, in which 1 is a cushion material, 2 is a bag body in which the cushion material 1 is housed, 3 is an opening / closing valve provided in the bag body 2. Is.

The cushion material 1 is usually used as batting as long as it retains a deformed state when the inside of the bag body 2 is depressurized and has elasticity required for the cushion in that state. Any of the above may be used, and a foam having open cells is preferably used. When such a foam is used, when a load is applied while the on-off valve 3 is opened, the cells in the foam are in communication with each other, so that the air taken in the cells is efficiently removed from the on-off valve 3. The cells are gradually deformed according to the air escape and the load while being discharged to the air, and therefore, the deformed state according to the load can be favorably formed, and the on-off valve 3 is closed to reduce the pressure. Even in the closed state, since the skeleton of the foam itself has sufficient elasticity as a cushion, it is possible to always obtain the original comfortable feeling of the cushion even in the deformed state.

As the foamed material, specifically, foamed material such as polystyrene, ABS resin, polyurethane, polyethylene, vinyl chloride resin is used. In this embodiment, foamed polyurethane is used.

The bag body 2 is a bag-like material formed by adhering sheet-like materials made of an air-blocking material by heat sealing or the like, and the air-blocking material is flexible so as not to pass air. Any material may be used, for example,
General-purpose synthetic resin sheets such as polyethylene, polypropylene and polyvinyl chloride, natural leather such as cowhide, synthetic leather such as nitrocellulose and polyurethane are used. In this embodiment, a polyvinyl chloride sheet is used, and the upper sheet 21 and the lower sheet 22 are heat-sealed to form a bag body 2 so as to wrap the cushion material 1 in a hermetically sealed manner.

The opening / closing valve 3 is basically a valve body 32 inserted into a cylindrical valve casing 31 as shown in FIG.
Is configured to adjust the amount of air in the bag body 2 by pushing the operating body 33, and the valve casing 31 shown in the drawing has a small diameter hole at one end side in the longitudinal direction in the valve casing 31. 31a, and the large-diameter hole 31 on the other end side in the length direction
As b, a valve seat 31c is provided at a boundary between the small diameter hole 31a and the large diameter hole 31b, and an end portion of the valve casing 31 on the opening side of the small diameter hole 31a is provided with a rubber material in the opening formed in the bag body 2. It is fixed at 4.

On the other hand, the valve body 32 is a disk having an outer diameter larger than that of the small diameter hole 31a and smaller than that of the large diameter hole 31b, and the operating body 33 has a substantially cross-shaped cross section. The disc-shaped pressing portion 3 is provided at one end of the leg portion 33a in the length direction.
3b is integrally formed, and the leg portion 33a of the operating body 33 is formed.
From the opening of the small diameter hole 31a.
The valve body 32 is fixed to the insertion end of the leg portion 33a through a screw body 34 after being inserted into the inside of the valve body 32.
A coil spring 36 is interposed between the back surface of the valve casing 31 and a spring receiver 35 fitted to the inner peripheral surface of the small diameter hole 31a of the valve casing 31. The body 32 is brought into pressure contact with the valve seat 31c to cut off communication between the inside and outside of the bag body.

In the on-off valve 3 described above, the valve element 32 is always moved by the spring force of the coil spring 36.
The valve body 32 maintains the closing operation in pressure contact with the valve body 32 by the pushing operation of the pressing portion 33b of the operating body 33.
Is moved in the direction away from the valve seat 31c against the spring force of the coil spring 36, thereby performing the opening operation.

As described above, in the cushion according to the present embodiment, the amount of air in the sealed bag can be adjusted by opening and closing the on-off valve 3. Therefore, when a load is applied to the cushion while opening the on-off valve 3, While the cushion is deformed according to the load, the air inside the bag is discharged through the on-off valve 3, so that the load is removed after the on-off valve 3 is closed. However, the inside of the bag is in a depressurized state, and the deformed state can be maintained without being recovered by the elasticity of the cushion material 1.

When the on-off valve 3 is opened in a deformed state, that is, when the inside of the bag is depressurized, the inside of the bag is a drawing pressure and air is drawn in. Therefore, the cushion is made of a cushion material. When the elasticity of 1 is restored, the cushion naturally returns to its original shape.

Therefore, at the time of use, the user sits or leans on the cushion while opening the open / close valve 3 to apply a load to the cushion, so that the cushion is arbitrarily fitted to the seat of the user in advance. It can be deformed into a shape so that you can always sit with a snug fit, even when you sit down or lean back. Further, after use, it can be easily returned to the original shape by simply opening the on-off valve 3 again.

Even when the cushion is used in a place with a lot of vibration such as a seat of an automobile, the cushion does not lose its original comfortable feeling without being repeatedly deformed and recovered by the repeated load applied by the user.
In particular, when used as a cushion for a vehicle seat, by deforming it into an arbitrary shape that suits the occupant's seat beforehand, for example, the occupant's seat can be seated even when lateral gravity is applied during a curve. It can be held firmly and a good ride quality can be secured.

[0023]

As described above, according to the first aspect of the present invention, the user sits while opening the on-off valve 3 at the time of use only by the simple opening / closing operation of the on-off valve 3. Or you can lean back and put the cushion into an arbitrary shape that fits the user's seat beforehand.
When you sit down or lean back, you always have a snug fit.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a cushion according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

[Explanation of symbols]

 1 Cushion material 2 Bag body 3 Open / close valve

Claims (1)

[Claims] 1. A cushion material (1) and a bag body (2) which is made of an air-blocking material and which hermetically encloses the cushion material, wherein the bag body (2) has air inside the bag body. A cushion characterized by being provided with an on-off valve (3) for adjusting the amount.