JP2000093258A - Cushion body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushion body capable of eliminating various faults of conventional cushion bodies and roughly completely restoring to an initial form after unloaded. SOLUTION: Grain material 8 attached with high viscosity liquid on the surface is enclosed in a grain material enclosing part 6 composed of flexible film at least partly, and a gas enclosing part 2 is put to be adjacent to the grain material 8 through the flexible film. By action of the grain material 8 attached with high viscosity liquid, various faults of conventional cushion bodies can be eliminated. As this cushion body 1 is pressed from the external, the gas enclosing part 2 is pressed by the grain material 8 to be compressed, and when unloaded, the gas enclosing part 2 restores to its initial form, so the grain material also restores its initial deposition condition, till the whole cushion body 1 roughly completely restores its initial form finally. Elastic porous material may be provided instead of the gas enclosing part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cushion bodies such as pillows, mattresses (including mattresses for beds and sofas), cushions and the like.

[0002]

2. Description of the Related Art Conventional cushion bodies are roughly classified into the following four types.

(A) A material having a large number of voids inside a foam such as urethane foam or cotton, a material having rubber elasticity such as rubber, a spring, or the like is used to form air, liquid, or gel-like substance. Is a non-fluid / non-gel type not used,
(B) an air-filled type in which air is filled like an air pillow or an air mat; (c) a liquid-filled type in which liquid is filled like a water mattress or a water pillow of a water bed; (d) a gel-like substance Gel-encapsulated type that encloses.

[0004]

The non-fluid / non-gel type cushion body of the prior art (a) is characterized in that when pressed by a human body or the like, only the pressed portion locally increases the pressure. have. Therefore, for example, when used for the purpose of performing a cushioning function on the human body such as a pillow, a mattress (including a mattress for a bed and a sofa), a cushion, and the like, the local pressure increase may cause the human body. There was a problem that it was not comfortable. When used in mattresses, bedridden persons have impeded blood circulation and caused bedsores. In addition, when pressed by a human body or the like, only the pressed portion locally bears the load, so that there is also a problem that the portion is easily settled.

[0005] The air-filled cushion body of the prior art (b) has a high elasticity of air. Therefore, when it is used for a cushion body used for the purpose of performing a cushion function on a human body, it is unstable. Feeling was not good.

When the conventional liquid-cushion-type cushion body is pressed against a human body or the like, the pressure is uniformly increased not only in the pressed portion but also in the whole, and the vicinity of the pressed portion is increased. Touches a pressing object such as a human body from the cushion body side, and the pressing object such as a human body is supported by the entire cushion body. For this reason, when used for a cushion body used for the purpose of performing a cushioning function on the human body, the human body is comfortably supported, and in particular, in the case of a water mattress of a water bed, bedridden hardly occurs even for a bedridden person.

However, the conventional liquid-enclosed cushion body has the following disadvantages.

(A) The weight increases. For example, in the case of a water bed, it becomes so heavy that it cannot be used in a wooden house whose floor load capacity is not sufficient.

(B) Since the viscosity of the liquid is low, water largely flows inside and shakes, and when used in a cushion body used for the purpose of performing a cushioning function on a human body, it gives discomfort to the human body. . In particular, in the case of a water bed, the sway of the liquid may cause a seasickness phenomenon.

(C) Feeling cold.

(D) In order to maintain the shape, it is necessary to take measures such as providing a large number of reinforcing walls, reinforcing ribs and the like inside the enclosure for filling the liquid, which increases the manufacturing cost.

The conventional gel-enclosed cushion body (d) has the following drawbacks.

(E) The weight increases as in the case of the liquid-filled type.

(F) Similar to the non-fluid / non-gel type, when pressed against a human body or the like, only the pressed portion locally increases the pressure. The same drawbacks occur.

(G) I feel cold.

The present applicant has previously disclosed a cushion body capable of solving such a conventional disadvantage as disclosed in Japanese Patent Application No. 9-30484.
No. 7 proposed a cushion body in which granules having a high-viscosity liquid adhered to the surface were enclosed.

In this cushion body, since a particle having a high-viscosity liquid adhered to the surface is enclosed therein, the elastic modulus does not become too high unlike the conventional air-enclosed cushion body.

Further, since the high viscosity liquid is attached to the surface, a large viscous resistance acts between the particles, so that the particles exhibit a behavior similar to a higher viscosity fluid,
Similar to the conventional liquid-filled cushion body, when pressed against the human body or the like, the pressure is uniformly increased not only at the pressed part but also as a whole, and the vicinity of the pressed part is closer to the human body from the cushion body side. The pressed object such as a human body is supported by the entire cushion body. Therefore, pillows,
When used for a cushion body used for the purpose of performing a cushioning function on the human body such as a mattress (including a mattress for a bed and a sofa), a cushion, etc., the human body is supported by the entire cushion body and is comfortable. Supported. And when it is used for a mattress, bedridden hardly occurs even for bedridden people.

Also, since a space is formed between the grains,
The overall weight is lighter than [apparent total volume x apparent specific gravity of granules]. Therefore, for example, even if the granules having an apparent specific gravity of 1 are used, the overall weight is lighter than that of the cushion body in which the same volume of water is sealed. The use of granules having a small apparent specific gravity can further reduce the overall weight.

Further, the granular material having a high-viscosity liquid adhered to the surface does not flow and shake like a low-viscosity liquid such as water. Therefore, even if it is used for a cushion body used for the purpose of performing a cushion function on the human body,
It does not cause discomfort to the human body, and can prevent the seasickness phenomenon caused by the swaying of the liquid (water), which has been a problem in the related art particularly when used in a water bed.

Further, since a space is formed between the particles, the heat insulating property is high and the user does not feel cold. If a particle containing a large amount of air inside such as a particle made of a porous material or a hollow particle is used as the particle, the heat insulating property becomes higher, and the particle does not feel colder.

Further, when pressed, the pressure is uniformly increased not only in the pressed portion but also in the whole, and the load is supported as a whole, so that it is difficult to set.

Further, since the granular material having a high-viscosity liquid adhered to the surface has a high shape retention, a large number of solid reinforcing walls, reinforcing ribs, etc. are provided inside or outside the enclosing body for enclosing the granular material inside. And the like, and the production cost can be reduced (however, a reinforcing wall, a reinforcing rib, or the like may be provided inside or outside the enclosure). In particular, in the case of using particles having a small apparent specific gravity as described above, since the weight can be reduced, the necessity of installing reinforcing walls, reinforcing ribs, and the like is further eliminated.

It should be noted that, in this cushion, the granules are completely immersed in the liquid, and the liquid must not be completely filled between the granules. If the liquid is completely filled between the particles, there will be no space between the particles, and the characteristics will be close to those of only the liquid, and it will be possible to obtain various excellent characteristics as described above. Can not.

As described above, this cushion body can obtain various excellent characteristics. However, when the human body separates from the cushion body with the end of use and is unloaded, like the conventional cushion body. It may not return to the initial shape, the pressed part remains in a dented state, and it may not be able to fully perform its function at the next use, and the appearance is also bad there were. It should be noted that a film having elasticity (stretchability) is used as a film of the fluid enclosing portion (enclosure) for enclosing the granules, and the film is configured such that tension is applied to the film when pressed from the outside. Then, when unloaded, due to the elasticity of the film,
Although the cushion body can return to the initial shape, the deformation remains to some extent, and the cushion body cannot be completely returned to the initial shape.

The present invention has been made in view of the above circumstances, and one object of the present invention is to eliminate various disadvantages of the conventional cushion body, and to substantially reduce the initial shape after unloading. An object of the present invention is to provide a cushion body that completely returns.

Another object of the present invention is to provide a cushion body capable of adjusting hardness (the relationship between the magnitude of pressure applied from the outside and the magnitude of deformation of the cushion body).

Still other objects of the present invention will become apparent from the following description.

[0029]

According to one aspect of the present invention, there is provided a cushion body, wherein at least a part of the cushion body is formed of a flexible film, and a high-viscosity sealed inside the granule housing section. And a gas-filled portion which is at least partially formed of a flexible film, is adjacent to the particle via the film, and has a gas sealed therein. When the granules in the granule enclosing portion are pressed from the outside through the coating of the granule enclosing portion, the granules are pressed by the granules to compress the gas enclosing portion. Is what it is.

In the cushion body, when the granules are pressed from outside by the human body or the like through the coating,
When the granules immediately below the pressed portion move to another location in the granule enclosing portion, the pressed portion is depressed and the granules press and compress the gas enclosing portion. When the human body or the like separates from the cushion body with the end of use and is unloaded, the gas-filled portion returns to the initial shape, so that the granules are also pushed back by the gas-filled portion and return to the initial deposition state. And the entire cushion body returns to its initial shape. As a result, the entire cushion body can be finally returned almost completely to the initial shape.
Here, since a high-viscosity liquid is interposed between the granules, a large viscous resistance acts between the granules, so that the process of returning the entire cushion body to the initial shape as described above is extremely difficult. (The time from unloading to almost completely returning to the initial shape is determined by the viscosity of the liquid and the size of the granules, and is, for example, several minutes to several hours).

Also, in this cushion body, by adjusting the pressure of the gas filling section by adjusting the amount of air to be put into the gas filling section, the rigidity of the cushion body (the magnitude of the pressure applied from the outside and the magnitude of Relationship with the magnitude of deformation of the cushion body) can be adjusted.

A cushion body according to another aspect of the present invention comprises:
An elastic porous body having rubber elasticity is provided instead of the gas filling portion. Then, the cushioning body can be almost completely restored to the initial shape after unloading, by the elastic porous body performing the same function as the gas filling portion.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION The high viscosity liquid of the present invention preferably has a kinematic viscosity of 50 to 1,000,000 cSt. Water (Kinematic viscosity at 20 ° C is 1.01 cS
With a low-viscosity liquid such as t), the above-described effects cannot be obtained. Examples of the high-viscosity liquid include polybutene, α-olefin oligomer, silicone oil and other high-viscosity oils, water in which a water-soluble polymer such as PVA (polyvinyl alcohol) and PEG (polyethylene glycol) is dissolved, or Metrose or smectite. Water or the like thickened with a thickening agent such as can be used.

The particles may be hard, which can be regarded as substantially rigid, or may be soft to some extent, but are very large even for an external force in the expected range. It is not desirable to use a very soft material that deforms and becomes completely crushed, because the fluidity deteriorates. It is possible to use it.)

The particles may have rubber elasticity, such as particles made of rubber or thermoplastic resin, or may have no rubber elasticity.

The apparent specific gravity of the granules is preferably 1 or less from the viewpoint that the total weight can be reduced.
0.01 to 0.1 is particularly preferred.

As the above-mentioned granules, foams such as foamed beads of various plastics such as polystyrene, other porous materials, and hollow granules such as plastic microballoons and shirasu balloons have an apparent specific gravity. Although it is preferable in that it can be reduced in size and can further enhance heat insulation and sound insulation, solid particles made of a non-porous material can also be used.

The external shape of the granules is preferably spherical or similar, but may be non-spherical.

Further, granules having different materials, hardness, presence / absence of rubber elasticity, apparent specific gravity, shape and the like may be mixed and used at an appropriate ratio.

The particle size of the granules is preferably from 0.1 to 50 mm, particularly preferably from 1 to 10 mm. If it is too small, it will exhibit characteristics close to those in which only a liquid is enclosed. On the other hand, if the particles are too large, they will be lumpy. However, generally speaking, the larger the granule housing portion and the larger the area of the portion pressed by the human body or the like, the larger the granule may be.

As the film constituting the particle enclosing portion,
For example, rubber, various thermoplastic elastomers, flexible PVC
An elastic (stretchable) film or sheet-like material such as (polyvinyl chloride) or the like is preferable. Such a sheet-like material can expand following the change in the shape of the granular material enclosing portion, and also has a function of contracting when unloaded to more completely return the shape of the entire cushion body to the initial shape. In particular, filling the inside of the enclosure with granules,
After enclosing the granules in an enclosure made of a heat-shrinkable sheet material, the enclosure is heated to shrink, etc., so that tension is applied to the enclosure even when no external force is applied. If so, the shape restoration function can be further enhanced.

When a liquid containing water is used as the high-viscosity liquid, it is preferable to use a material having low moisture permeability as a material constituting the enclosure in order to prevent water from evaporating to the outside. . Sheet materials such as rubber, various thermoplastic elastomers, and soft PVC have low moisture permeability and are also preferable in this aspect.

Examples of the elastic porous body include foams such as rubber and various thermoplastic elastomers, and continuous porous bodies of polymers proposed by the present applicant in Japanese Patent Application No. 9-335508. . The elastic porous body may have closed cells or open cells.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

FIGS. 1 to 8 show a first embodiment of a cushion body according to the present invention. This embodiment is an example in which the present invention is applied to a pillow 1. FIG. The pillow 1 is provided with a gas filling part 2 as well shown in FIGS. 4 and 5 (FIGS. 4 and 5 show only the gas filling part 2 alone and inflated with air). . The gas filled portion 2 is entirely made of a sheet material such as a film or sheet having elasticity (stretchability) such as rubber, various thermoplastic elastomers, and soft PVC (polyvinyl chloride) and having low moisture permeability. This film is sewn by bonding, heat welding, or the like to form a floating bag. The gas filling portion 2 has a rounded frame shape as a whole, and has four corners 2a, 2b, 2
c and 2d have a small cross-sectional area, while the remaining four sides 2e, 2f, 2g and 2h have a large cross-sectional area. The gas sealing portion 2 is provided with an air stopper 3, and air can be introduced into the gas sealing portion 2 through the air stopper 3.

As shown in FIGS. 1 to 3 and 6, an upper film 4 and a lower film 5 are adhered or welded to the upper and lower portions of the gas filled portion 2, respectively. A sealed space is formed between the film 5 and the gas sealing portion 2. Here, in the present embodiment, a granular enclosure 6 enclosing the closed space is formed by the upper coating 4, the lower coating 5, and a part of the coating of the gas enclosure 2. Therefore, in the present embodiment, a part of the film of the gas sealing portion 2 serves as both the film of the gas sealing portion 2 and the film of the granular material sealing portion 6. The upper film 4 and the lower film 5 are made of rubber, various thermoplastic elastomers,
It is made of an elastic (stretchable) film or sheet material such as flexible PVC (polyvinyl chloride).

As shown in FIG. 7, a particle 8 having a high-viscosity liquid 7 adhered to the surface thereof is enclosed in the particle enclosure 6. In this example, an α-olefin oligomer (viscosity at 25 ° C. of about 30,000 cSt) was used as the high viscosity liquid 7. The upper coating 4, the lower coating 5, and the gas-filled portion 2 are entirely covered with a cloth 9. The air tap 3 is drawn out of the cloth 9.

In the pillow 1, since the granules 8 having the high viscosity liquid 7 adhered to the surface thereof are sealed in the granule enclosing section 6, the elastic modulus of the pillow 1 is the same as that of the conventional air-enclosed cushion body. Does not become too high and become unstable.

Since the high-viscosity liquid 7 is adhered to the surface, the granules flow slowly while receiving a large viscous resistance, so that the granules 8 exhibit a behavior similar to the higher-viscosity fluid. As shown in FIG. 8, similarly to the conventional liquid-enclosed cushion body, when pressed against the head 10 as shown in FIG. Is in contact with the head 10 from the pillow 1 side. In addition, since the granules 8 flow gently following the change of the posture and the sleeping phase of the user and the whole pillow 1 is deformed and the contact state is maintained, the head 10 is always comfortably supported by the whole pillow 1. Is done.

In addition, since the space 20 is formed between the granules 8 and the apparent specific gravity of the granules 8 itself is small, the weight is extremely reduced.

The granules 8 having the surface of the liquid 7 having a high viscosity adhere to the surface of the water pillow, so that the particles 8 do not shake and give an unpleasant feeling.

Further, since a space 20 is formed between the granules 8 and the granules 8 themselves are made of a porous material containing a large amount of air therein, the pillow 1 has a very high heat insulating property. Never feel cold.

When the head 10 is pressed, the pressure is uniformly increased not only in the pressed portion but also in the whole.
Since the load is supported as a whole, it is difficult to settle.

Further, as shown in FIG. 8, when the granules 8 are pressed from above by the head 10 via the upper film 4, the granules 8 immediately below the pressed portion are separated from other particles in the granule enclosing section 6. By moving to the location, the pressed portion collapses. Here, assuming that there is no gas-filled portion 2, when the user gets up and the head 10 is separated from the pillow 1, the pillow 1 remains in a recessed state, forever as shown in FIGS. 2 and 3. It does not return to its initial shape and looks bad.

However, in the pillow 1, when the air pressure of the gas filling portion 2 is set to an appropriate size, the granules 8 immediately below the pressed portion move to another place in the granule filling portion 6. As a result, at the same time as the pressed portion is depressed, the granular material 8 presses and compresses the gas filled portion 2. And the head 10
When the gas leaves the pillow 1, the gas-filled portion 2 returns to the initial shape as shown in FIGS. 1 to 3, so that the granules 8 are also pushed back by the gas-filled portion 2 and return to the initial deposition state, As a result, the entire pillow 1 returns to the initial shape, and finally the pillow 1
The whole returns almost completely to the initial shape. Here, since the high-viscosity liquid 7 is interposed between the granules 8,
Since a large viscous resistance acts between the pillows,
The whole process of returning to the initial shape is performed very slowly (the time from unloading to almost completely returning to the initial shape depends on the viscosity of the liquid 7, the size of the granules 8, and the like. , Minutes to hours).

By filling the granules 8 in the granule enclosing portion 6 completely, the tension is applied to the films 4 and 5 of the granule enclosing portion 6 even when no external force is applied. In other words, when pressed against the head 10, greater tension acts on the coatings 4, 5 of the granular enclosure 6, while when the head 10 separates from the pillow 1, the coating 4 of the granular enclosure 6 , 5 contracts to the initial state due to its elasticity, so that the entire pillow 1 can be more completely returned to the initial shape.

In the pillow 1, the pressure of the gas filling portion 2 is adjusted by adjusting the amount of air to be put into the gas filling portion 2, thereby the hardness of the pillow 1 (the magnitude of the pressure applied from the outside). (The relationship between the pillow 1 and the magnitude of the deformation of the pillow 1) can also be adjusted.

If the gas filling portion 2 is formed in a frame shape having the same cross-sectional area as the whole, even if pressed by the head 10, the gas filling portion 2 is restrained by the four corners, and In this embodiment, the four corners 2a to 2d of the gas sealing portion 2 have a small cross-sectional area, while the remaining portions 4e of the four sides 2e are difficult to compress and deform, and the gas sealing portion 2 may not function properly. 2h have a large cross-sectional area, when pressed by the head 10, the restraint by the four corners 2a to 2d is reduced, and the four sides 2e to
2h is easily deformed by compression.

FIGS. 9 to 14 show a second embodiment of the cushion body according to the present invention. This embodiment is an example in which the present invention is applied to a mattress 11. The mattress 11 has a head-side portion 11a, an intermediate portion 11b, and a leg-side portion 11c.
Are divided into three parts, and these three parts 1
1a, 11b and 11c are connected to each other by hinges 12 and 13. Then, as shown in FIG.
By folding in 2 and 13, it can be folded. This mattress 11 is shown in FIG.
Put it on the bed base 14 like 11 and 14,
It can be used as a bed mattress, or laid on a tatami mat or floor and used like a futon.

The head side portion 11a is configured as follows. The frame member 15 is made of a hard material such as a hard polyurethane foam, and has a bottom surface portion 15a, and left and right side surface portions 15b, 15c, and a head side vertically rising from the left and right ends and the head side end of the bottom surface portion 15a, respectively. It has a total of four surface members with the end surface part 15d,
It has relatively high rigidity. The left side portion 15b
On the inner surface of the right side surface portion 15c, gas filling portions 2 extending along these left and right side surface portions 15b and 15c are fixed. These gas filled portions 2 are made of rubber, various thermoplastic elastomers, soft PVC (polyvinyl chloride).
A film made of a sheet material such as a film or sheet having elasticity (stretchability), such as a sheet, is sewn by bonding or heat welding or the like, and as shown in FIGS. 2j. The semicircular portion 2i and the circular portion 2j have a semicircular shape and a circular shape, respectively, in a state where the air is sufficiently contained and no load is applied from the outside. 2j is in contact with the arc portion of the semicircular portion 2i. Most of the connecting portion between the circular portion 2j and the semi-circular portion 2i is closed, but communication holes 19 are provided at appropriate portions of the connecting portion. Inside of circular portion 2i and circular portion 2
j is continuous. And the gas filling section 2
Are fixed to the left and right side surfaces 15b and 15c of the frame member 15 in the plane portion of the semicircular portion 2i.

The frame member 15 and the gas filling portion 2
Are accommodated in the particle enclosure 6. The particle enclosing part 6 is made of rubber, various thermoplastic elastomers, soft PVC
A film made of an elastic (stretchable) film or sheet such as (polyvinyl chloride) or a sheet-like material such as a sheet is sewn into a box shape by bonding or heat welding, etc.
The outer surface of 5 is in contact with the inner surface of the coating of the particle enclosure 6. In the inside of the frame material 15 in the inside of the granular material enclosing part 6, the same granular material 8 having the high viscosity liquid 7 adhered to the surface as in the first embodiment is sealed in a sealed state. ing. The entire outer surface of the particle enclosure 6 is covered with a cloth 9 sewn in a box shape. The gas filling section 2 is provided with an air tap 3 from which air can be introduced into the gas filling section 2 by an air pump or the like (not shown). The air tap 3 is drawn out of the cloth 9.

The leg side portion 11c of the mattress 11
Is that the frame material 15 has a symmetrical shape to that of the head side portion 11a (that is, there is no vertically rising surface on the head side end portion of the bottom portion 11a, while the leg side end portion has (A leg-side end surface 15e that rises vertically toward the other side) is provided. Intermediate portion 11b of the mattress 11
Also, the frame member 15 has only a bottom surface portion 15a, and a left side portion 15b and a right side portion 15c which rise perpendicularly to the bottom surface portion 15a, respectively, except that the frame material 15 has only a total of three surface members. It has the same configuration as 11a.

Also in this mattress 11, since the granules 8 having the high viscosity liquid 7 adhered to the surface thereof are sealed in the granule enclosing section 6, the elastic modulus of the mattress 11 is the same as that of a conventional air-enclosed type mattress. Don't get too high.

Since the high-viscosity liquid 7 is adhered to the surface, the granules 8 show a behavior similar to a higher-viscosity fluid, and the liquid-encapsulated type such as a conventional water bed water mattress is used. When pressed by the user's body 16 as shown in FIG.
The pressure is uniformly increased not only in the pressed part but also in the whole, and the vicinity of the pressed part comes into contact with the body 16 from the mattress 11 side, and the body 16 is comfortably supported by the entire cushion body.

In addition, since a space is formed between the granules 8, the apparent specific gravity of the granules 8 itself is small, so that the weight is very light.

The granules 8 having the liquid 7 of high viscosity adhered to the surface thereof do not flow and shake like water in a water mattress of a water bed to give an unpleasant feeling.

Further, since a space is formed between the granules 8 and the granules 8 themselves are made of a porous material containing a lot of air therein, the mattress 11 has a very high heat insulating property. I don't feel cold.

When the body 16 is pressed, the pressure is uniformly increased not only in the pressed portion but also in the whole,
Since the load is supported as a whole, it is difficult to settle.

Further, in a state where the air pressure of the gas sealing portion 2 is set to an appropriate level, the granular material 8 is pressed from above by the body 16 of the user via the film of the granular sealing portion 6 as shown in FIG. Then, the granular material 8 immediately below the pressed portion moves to another place in the granular material enclosing portion 6, so that the pressed portion is depressed, and at the same time, the granular material 8 presses the gas sealing portions 2 on both the left and right sides. Compress. And the body 16 is mattress 11
When the gas is separated from the gas-filled portion 2, the gas-filled portion 2 attempts to return to the initial shape as shown in FIGS. 9, 11, and 12, so that the granules 8 are also pushed back by the gas-filled portion 2 and almost completely return to the initial deposited shape. The entire mattress 11 is almost completely returned to the initial shape. Also in this case, since the high-viscosity liquid 7 is interposed between the granules 8, a large viscous resistance acts between the granules 8, so that the entire mattress 11 returns to the initial shape as described above. The process is very slow.

In this embodiment, when the user lies on the mattress 11, the granules 8 mainly move in the width direction of the mattress 11 and do not move much in the length direction.
The gas-filled portion 2 may not be provided at the head-side end and the leg-side end.

Also in this embodiment, the granular material enclosing portion 6
If the film of the granule enclosing portion 6 is kept in tension even when no external force is applied by, for example, fully packing the granules 8 therein, when the body 16 is pressed by the body 16, a larger force is applied. While the tension acts on the film of the particle enclosing part 6, when the body 16 separates from the mattress 11, the film of the particle enclosing part 6 contracts due to its elasticity to an initial state, so that the entire mattress 11 is more completely initialized. It can be returned to its shape.

Further, by adjusting the pressure of the gas enclosing section 2 by adjusting the amount of air to be introduced into the gas enclosing section 2, the hardness of the mattress 11 (the magnitude of the pressure applied from the outside and the deformation of the mattress 11). Relationship with the size of
Can also be adjusted.

Although the solid spherical particles 8 are used in the above embodiments, hollow spherical particles 8 may be used as shown in FIG. Also, as described above, the granules 8
Is preferably spherical or a shape close thereto, but may be non-spherical. 16 to 20 show an example of a non-spherical particle 8, FIGS. 16 and 17 show an example of a particle 8 having a hollow sphere and a hole 17, and FIG. For example, FIGS. 19 and 20 show hollow heart-shaped granules 8.
Is shown.

Further, in each of the above-described embodiments, the whole of the particle enclosing portion 6 and the gas enclosing portion 2 is formed of a flexible film.
May be constituted only by a part of them by a flexible film.

In each of the above embodiments, air is sealed in the gas sealing portion 2. However, in the present invention, a gas other than air may be sealed in the gas sealing portion 2.

FIG. 21 shows a pillow according to a third embodiment of the cushion body according to the present invention. The pillow 1 according to this embodiment is different from the pillow 1 in that an elastic porous body 18 having rubber elasticity is used instead of the gas filling portion 2.
It has the same configuration as the pillow 1 of the first embodiment of FIGS. 1 to 8 except that the pillow 1 is provided. The elastic porous body 18 is made of a foamed material such as rubber or various thermoplastic elastomers, and has substantially the same shape as the gas filled portion 2 in a state of being sufficiently filled with air and expanded. The elastic porous body 18 may have closed cells or open cells. In the present embodiment, the granular material enclosing portion 6 is formed by the upper film 4, the lower film 5, and the elastic porous body 18.

Also in this embodiment, the pillow 1 is almost completely restored to its initial shape after unloading by the elastic porous body 18 performing the same function as the gas filling portion 12 in the first embodiment. In this embodiment, the elastic porous body 18 is directly adjacent to the granules 8, but the elastic porous body 18 may be adjacent to the granules 8 via a flexible film or the like.

[0078]

As described above, the cushion body according to the present invention can eliminate various disadvantages of the conventional cushion body, can return to the initial shape almost completely after unloading, and can further improve the gas filled portion. Is provided, excellent effects such as adjustment of hardness can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a pillow of a first embodiment of a cushion body according to the present invention in an initial state, with a part of a cloth on a surface thereof being removed;

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view showing only a gas storage portion of the pillow of the first embodiment alone.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is an enlarged sectional view showing a part of the pillow of the first embodiment.

FIG. 7 is an enlarged cross-sectional view schematically showing a particle having a high-viscosity liquid adhered to the surface of the pillow of the first embodiment.

FIG. 8 is a cross-sectional view showing a state during use of the pillow of the first embodiment.

FIG. 9 is a plan view showing a mattress of a cushion body according to a second embodiment of the present invention in its initial state.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is an enlarged sectional view of a part of FIG.

FIG. 13 is a sectional view showing the mattress of the second embodiment in a folded state.

FIG. 14 is a cross-sectional view showing a state in use of the mattress of the second embodiment.

FIG. 15 is a sectional view showing an example of a hollow spherical particle.

FIG. 16 is a cross-sectional view showing an example of a granule having a shape in which a hole is provided in a hollow sphere.

FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16;

FIG. 18 is a cross-sectional view showing an embodiment of a cylindrical particle.

FIG. 19 is a cross-sectional view showing an example of a hollow heart-shaped particle.

20 is a sectional view taken along line XX-XX in FIG.

FIG. 21 is a sectional view showing a pillow of a third embodiment of the cushion body according to the present invention in an initial state thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pillow (cushion body) 2 Gas filling part 4 Upper film 5 Lower film 6 Granular filling part 7 High-viscosity liquid 8 Granules 11 Mattress (cushion body) 18 Elastic porous body

Claims (15)

[Claims] 1. A particle enclosing part at least partially constituted by a flexible film, a particle encapsulated in the particle enclosing part, having a high-viscosity liquid adhered to the surface, and at least a part thereof. And a gas sealing portion which is formed of a flexible film, is adjacent to the granules through the film, and has a gas sealed therein. A cushion body, wherein when pressed from the outside via the coating of the granule sealing portion, the gas sealing portion is compressed by being pressed by the granule. 2. The cushion body according to claim 1, wherein the gas sealing portion is provided near an outer periphery of the granular material sealing portion. 3. The cushion body according to claim 1, wherein the film of the gas filling portion has elasticity. 4. A particle enclosing part at least partially constituted by a flexible film, a particle encapsulated in the particle enclosing part, having a high-viscosity liquid attached to a surface thereof, and the particle And an elastic porous body having rubber elasticity adjacent to the granules. When the granules in the granule enclosing portion are pressed from the outside via the coating of the granule enclosing portion, the granules Characterized in that the elastic porous body is compressed by being pressed against the cushion body. 5. The cushion body according to claim 4, wherein the elastic porous body is provided near an outer periphery of the granule enclosing portion. 6. The cushion body according to claim 1, wherein said film of said granule enclosing portion has elasticity. 7. The film of the granule enclosing portion is subjected to tension even when no external force is applied.
The cushion body according to 2, 3, 4, 5 or 6. 8. The kinematic viscosity of the high viscosity liquid is 50 to 50.
Claims 1,2,3,1,000,000 cSt.
The cushion body according to 4, 5, 6, or 7. 9. The cushion body according to claim 1, wherein said high-viscosity liquid is a high-viscosity oil. 10. The cushion body according to claim 1, wherein said high-viscosity liquid is water in which a water-soluble polymer is dissolved. 11. The cushion body according to claim 1, wherein said high-viscosity liquid is water thickened with a thickener. 12. The cushion body according to claim 1, wherein the apparent specific gravity of the granules is 1 or less. 13. The method according to claim 1, wherein said particles have a particle size of 0.1 to 50 mm.
The cushion body according to 0, 11 or 12. 14. The method according to claim 1, wherein the granules are made of a porous material.
14. The cushion body according to 2 or 13. 15. The method according to claim 1, wherein the granules are hollow.
2,3,4,5,6,7,8,9,10,11,12,
The cushion body according to 13 or 14.