JP3101240U - Liquid sealing cushion - Google Patents

Abstract

An object of the present invention is to provide a liquid sealing cushion in which the flexibility of a foamable urethane resin inserted in an outer container is sufficiently exhibited and the human body does not feel pressure.
An internal container made of urethane foam resin is inserted between waterproof sheets (2a and 2b) constituting an outer container (2), and a peripheral portion is heat-sealed to form a welded portion (3). A smaller amount of liquid than the volume of the inner body 6 is injected from the inlet 4, and the air in the outer container 2 is extracted from the air vent 5. When the interior body 6 is sufficiently impregnated with the liquid, the waterproof sheets 2a and 2b come into close contact with the surface of the interior body 6.
[Selection diagram] Fig. 1

Description

  The present invention relates to a liquid sealing cushion suitable as a cushion used for pillows, bed pads, mats and the like.

  The method of sealing a liquid and using it as a cushion has been used for a long time, for example, as a water pillow. Water pillows are used for heat cooling due to illness and are not suitable for general use. For example, since rubber is used for the outer container, if ice is put in a water pillow, dew condensation may occur on the surface of the outer container due to a temperature difference between the inside and the outside, and the periphery may be wetted.

  In addition to a water pillow, a bag-like outer container filled with a liquid such as water using a material such as vinyl chloride or polypropylene, such as a water bed, has been developed. When such a product rides on a person, the product becomes curved due to the body pressure, and a pressure corresponding to the body pressure is generated in the liquid to give a sense of pressure to the human body. In addition, since the liquid is filled in the outer container, the weight becomes heavy and a load for moving the container increases, and it cannot be used easily. In addition, it is necessary to pay attention to management in terms of leakage of the liquid, and once the liquid leaks, the liquid may flow out at once.

In order to cope with such a problem of the conventional liquid sealing cushion, it has been proposed to fill a porous material in an outer container. For example, Patent Literature 1 describes that a core made of urethane foam is housed between panels of a skin made of a vinyl sheet, and a liquid that almost saturates the core is stored in the panel. Further, Patent Document 2 describes that a container covered with a flexible vinyl bag around a porous core impregnated with water is inserted between linings of a pillow.
Japanese Patent Publication No. 4-67966 Japanese Patent Publication No. Hei 10-508513

  However, in the above-mentioned patent document, since the porous material is used as the core, the feeling of pressure when sitting is slightly reduced, but when the core is filled in the outer container and the liquid is almost full, It is inevitable that the pressure of the liquid increases and a feeling of pressure on the human body is felt. Therefore, the flexibility of the porous material is not sufficiently exhibited.

  Therefore, an object of the present invention is to provide a liquid sealing cushion in which the flexibility of a foamable urethane resin inserted into an outer container is sufficiently exhibited and the human body does not have a feeling of pressure.

  The liquid sealing cushion according to the present invention includes an outer container formed of a flexible waterproof sheet in a watertight manner, an inner body made of a flexible urethane foam resin, inserted into the outer container, and the outer case. A liquid sealing cushion comprising a liquid injected into a container, wherein the volume of the inner body is smaller than the inner volume of the outer container, and the amount of the liquid injected is greater than the volume of the inner body. It is characterized by being made smaller. Further, the liquid contains a preservative. Further, the liquid is injected by a measuring container capable of measuring a predetermined amount of the liquid.

  Another liquid sealing cushion according to the present invention is composed of a plurality of outer containers formed watertight by a flexible waterproof sheet, and an inner container made of a flexible urethane foam resin and inserted into each of the outer containers. A liquid sealing cushion comprising a body and a liquid injected into each of the outer containers, wherein each of the outer containers is connected and integrated, and a volume of the inner body inserted into each of the outer containers. Is characterized in that it is smaller than the inner volume of the outer container, and the amount of the liquid injected into each of the outer containers is smaller than the volume of the inner body.

  By having the above configuration, since the volume of the inner body is smaller than the inner volume of the outer container, when the air is almost completely removed from the outer container, the waterproof sheet constituting the outer container is It comes into close contact with the surface. And, since the inner body is made of urethane foam resin, when the liquid is injected into the outer container, the liquid gradually impregnates and air escapes, and if the injection amount of the liquid is made smaller than the volume of the inner body, The state in which the sheet of the outer container is in close contact with the surface of the inner body in a state where the liquid is filled in the inner body can be realized. When the outer container is pressed in this state, the inner body becomes concave correspondingly, and since the liquid is injected at a smaller volume than the inner volume of the outer container, there is room for flowing in the outer container, There is no pressure that feels oppressive. Since the inner body is mainly subjected to the pressing force, for example, it becomes deformed according to the shape of the buttocks when sitting down, and the pressure is almost uniformly applied to the entire area in contact with the outer container, so that the user is very seated. I feel better. Also, the feeling of pressure due to liquid such as a water bed is eliminated. Further, the liquid filled in the inner body does not flow out at a stretch even if the outer container is broken, so that damage due to the outflow of the liquid can be minimized. Here, the volume of the inner body means a volume calculated from the outer dimensions of the inner body.

  Further, since the liquid contains a preservative, the liquid can be prevented from spoiling even when used for a long time. Also, by injecting the liquid into a measuring container capable of measuring a predetermined amount of the liquid, the amount of the liquid to be injected can be accurately determined, and the liquid is injected so as to be in an optimal state according to the size of the outer container. Can be.

  In addition, by connecting and integrating a plurality of exterior containers, it is possible to easily cope with a large-sized object such as a mat or a bed pad. That is, if the outer container itself is adjusted to its large shape, it becomes heavy and handling becomes inconvenient. However, by connecting and integrating a plurality of small outer containers, handling becomes easy.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. The embodiment described below is a preferred specific example for carrying out the present invention, and thus various technical limitations are made. However, the present invention is intended to limit the present invention particularly in the following description. It is not limited to these forms unless otherwise specified.

  FIG. 1 shows an external perspective view (FIG. 1A) and an AA cross-sectional view (FIG. 1B) of an embodiment according to the present invention. The cushion 1 is made up of a pair of waterproof sheets 2a and 2b, and the outer container 2 is formed in a watertight manner by a fusion portion 3 which is formed by overlapping the peripheral edges of the pair of waterproof sheets 2a and 2b, and a urethane foam resin inserted into the outer container 2. Is provided with a rectangular parallelepiped interior body 6. The upper surface of the outer container 2 is provided with an inlet 4 for injecting the liquid and an air vent 5 for discharging air in the outer container 2 when injecting the liquid. A well-known valve member and a stopper are provided in the injection port 4 and the air vent 5, and the valve member is always closed so that the liquid in the outer container 2 does not leak to the outside. When injecting liquid or bleeding air, the valve member is pressed to open the valve. The stopper is inserted into the outlet of the inlet 4 and the outlet of the air vent 5, and seals the outlet.

  FIG. 2 shows a sectional view before injecting a liquid into the cushion 1. The inner body 6 is formed to be smaller than the inner volume of the outer container 2, so that a gap is left between the inner surface of the outer container 2 and the surface of the inner body 6. Then, when the liquid is injected while removing the air in the outer container 2, the liquid is stored in the outer container 2 and gradually impregnates the inner body 6. When the amount of the liquid is smaller than the volume of the inner body 6, the inner body 6 is sufficiently impregnated with the liquid, and the waterproof sheets 2 a and 2 b are in close contact with the inner body 6. Therefore, as shown in FIG. 1, the waterproof sheets 2a and 2b are wrinkled. In this state, when the cushion is pressed, the inner body 6 mainly receives the pressing force, and the inner body 6 is recessed. At this time, the liquid flows, but flows through the interior body 6, so that the fluid resistance is large and gradually flows, and the liquid flows and deforms corresponding to the pressed portion. For this reason, the pressing force is almost uniformly distributed over the entire pressing range. Therefore, when a person's head or buttocks are placed on the cushion, they are deformed according to their shapes, so that the feeling of use becomes very good. Further, since the injection amount of the liquid is smaller than the inner volume of the outer container 2, there is room to flow in the outer container, and even when pressed, the user hardly feels the pressure of the liquid.

  The waterproof sheets 2a and 2b have, for example, a two-layer structure, and the inner layer is a sheet made of a synthetic resin such as vinyl chloride, polypropylene, polyethylene or polyurethane, and has waterproofness and heat-fusibility. If the outer layer is woven with fibers such as cotton, wool, rayon, acrylic, polyester, and nylon, the feel and feel are good. Then, the outer layer and the inner layer are heat-sealed with high frequency or ultrasonic waves or bonded using an acrylic or urethane laminating resin to be integrated.

  Any known urethane foam resin can be used as long as it is flexible like a sponge and has the ability to absorb liquid and retain water therein. A nonwoven fabric can be used instead of the urethane foam resin.

  Water is mainly used as the liquid, but a preservative may be mixed. As the preservative, hinoki oil and quaternium-73 mainly containing natural components are preferable in consideration of the influence on the environment and the urethane resin when disposed. In addition, a cooling agent can be used for heat cooling. As the cool agent, sodium polyacrylate, ethylene glycol, and the like, which are polymer compounds having a hydrophilic group, are suitable. When such a substance is used, water is absorbed and gelled inside the urethane foam resin as the interior body, and an action of reducing the repulsive force of the interior body comes to work. Therefore, for example, a state deformed according to the head shape of the human body is maintained, and the feeling of pressure on the human body is further reduced.

  FIG. 3 shows a step of injecting a liquid into the cushion 1. Before the liquid is injected into the outer container 2, the cushion 1 can be rolled, as shown in FIG. Therefore, when the cushion 1 is transported in this state, the weight and the volume can be reduced. Further, in this state, the inlet 4 and the air vent 5 can be opened so that the air in the outer container 2 is released.

  Then, as shown in FIG. 3B, the inlet of the liquid injector 10 is inserted into the inlet 4. The liquid injector 10 is configured to be filled with a predetermined amount of liquid smaller than the volume calculated from the outer dimensions of the inner body 6, and the same amount or half of the liquid to be injected into the outer container 2. The quantity can be measured accurately. Therefore, the liquid can be easily injected, for example, by filling the liquid injector 10 up to a predetermined scale with the tap water.

  Next, as shown in FIG. 3 (c), when the liquid 7 is forcibly injected into the outer container 2 by squeezing the liquid injector 10, the inner body 6 gradually impregnates with the liquid. 7 is stored between the outer container 2 and the inner body 6, and the outer container 2 is in an expanded state. After all the liquid in the liquid injector 10 has been injected into the outer container 2, the liquid injector 10 is removed from the injection port 4 and a stopper is fitted. While the liquid is being injected from the liquid injector 10, the air vent port 5 is in an open state, and the air in the outer container 2 gradually escapes by the injection of the liquid. By fitting the plug of the air vent 5 at the same time as the plug of the inlet 4, the air in the outer container 2 is almost completely released.

  As the interior body 6 is impregnated with the liquid, the air inside the interior body 6 escapes and accumulates between the exterior container 2 and the interior body 6, but is discharged from the air vent 5 as needed. When the liquid 7 is sufficiently impregnated in the inner body 6, the liquid injection amount is smaller than the volume of the inner body 6, and the air in the outer container 2 is almost completely removed. 6 (FIG. 3D).

  FIG. 4 shows an external perspective view (FIG. 4A) and a cross-sectional view (FIG. 4B) of the cushion 100 configured by connecting a plurality of the outer containers 2 described above. In this example, the cushion 100 is formed by connecting three exterior containers 2 in the lateral direction, and as shown in the cross-sectional view of FIG. 4B, the waterproof sheets 2a and 2b are one sheet, The waterproof sheets 2a and 2b between the outer containers 2 are overlapped and heat-sealed to form the respective fused parts 3. A rectangular parallelepiped inner body 6 is inserted into each outer container 2, and the waterproof sheet 2 a is provided with an inlet 4 and an air vent 5. Further, a fastener 20 is provided as a detachable connecting means at the heat-sealed portion 3 at the end of the cushion 100, and its length can be changed according to the case of use.

  In this example, a rectangular parallelepiped outer container 2 is used, but the shape of the outer container 2 can be easily changed. That is, if the inner body 6 is formed in a donut shape and the waterproof sheets 2a and 2b are heat-sealed according to the shape, a donut-shaped cushion can be easily manufactured. Therefore, it is possible to produce various shapes according to the application and design.

As the waterproof sheet, a laminate made of a nylon sheet and a polypropylene sheet laminated and bonded was used, and as the interior body, urethane foam (volume: 1400 cm ³ ) having an outer dimension of 20 cm in length, 20 cm in width and 3.5 cm in thickness was used. Then, 1300 cm ³ of tap water by the method shown in FIG. 3 after finishing the outer container by heat-sealing a peripheral portion overlay by inserting inner body between a pair of waterproof sheet into the shape as shown in FIG. 1 Injected.

  After 30 minutes, the interior body was sufficiently impregnated with water and the waterproof sheet was brought into close contact with the surface of the interior body. The cushion thus manufactured was used as a pillow for 6 hours, and although the temperature gradually increased, it did not increase to body temperature, and it was confirmed that a long-lasting cold sensation was given. In addition, the state deformed according to the shape of the head was maintained, and there was almost no feeling of oppression.

FIG. 2 is an external perspective view and an AA cross-sectional view of the embodiment according to the present invention. It is a cross section before injecting a liquid. It is explanatory drawing which shows the injection | pouring process of a liquid. It is an outline perspective view and a sectional view showing an example in which a plurality of exterior containers are connected.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Cushion 2 Outer container 3 Fusion part 4 Injection part 5 Air vent 6 Inner body 7 Liquid
10 Liquid injector
20 Fasteners

Claims (4)

  An outer container formed water-tight with a flexible waterproof sheet, an inner body made of a flexible urethane foam resin and inserted into the outer container, and a liquid injected into the outer container. A liquid sealing cushion, wherein the volume of the inner body is smaller than the inner volume of the outer container, and the injection amount of the liquid is smaller than the volume of the inner body. Sealing cushion.   The liquid sealing cushion according to claim 1, wherein the liquid includes a preservative.   The liquid sealing cushion according to claim 1, wherein the liquid is injected by a measuring container capable of measuring a predetermined amount of the liquid.   A plurality of outer containers formed watertight by a flexible waterproof sheet, an inner body made of a flexible urethane foam resin and inserted into each of the outer containers, and a liquid injected into each of the outer containers. Wherein the outer containers are connected and integrated, and the volume of the inner body inserted into each of the outer containers is made smaller than the inner volume of the outer container. The liquid sealing cushion, wherein an amount of the liquid injected into each of the outer containers is smaller than a volume of the inner body.

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