JP2915862B2 - Gas supply mechanism for air mat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas supply mechanism for an air mat for inflating an air mat.

[0002]

2. Description of the Related Art Air mats are often used as outdoor equipment. For example, if the air mat is laid in a tent, the inside of the tent can be kept comfortable by blocking cold air from the ground by a gas layer inside the tent. . Also, besides that,
It is sometimes used as a cot or the like in an emergency, and its use is diversified. Until now, in order to inflate such an air mat, air was supplied using an air supply.

[0003] As a ventilator, a foot-step type is generally used, but even if it is used, it takes time to inflate the air mat and considerable labor is required. For this reason, it is very troublesome to inflate the air mat as described above, for example, in a campsite while being exhausted. Or in an emergency,
In situations where no one is physically strong, the air mat may not be able to fully inflate. In particular, in this case, since a large number of air mats will be required, some measure is required.

[0004]

Therefore, it is conceivable to use a gas generator or a small gas cylinder so that anyone can inflate the air mat easily and without time. A gas generator ignites a liquid or solid gas generating material and inflates an air mat with a gas generated by a chemical reaction in the same manner as an air bag mounted on a vehicle. A small gas cylinder is one in which an air mat is inflated by a compressed gas filled in a cylinder.

However, the use of a gas generator or a small gas cylinder as described above causes the following problems. For example, when a gas generator, the gas becomes a high temperature by a chemical reaction must be fitted with a radiator or the like. When a small gas cylinder is used, the volume of the cylinder must be increased depending on the size of the air mat, and portability is impaired.
Also, when the volume of the cylinder becomes large, it may be regulated by the High Pressure Gas Safety Law or the like, and it cannot be generally spread.

Further, in both cases, the main component of the gas is often carbon dioxide or nitrogen. Therefore, particularly when the air mat is used in a closed space such as the inside of a tent, the air mat may be broken, and the carbon dioxide and nitrogen may flow out, causing an oxygen deficiency state. The present invention
An object of the present invention is to provide a gas supply mechanism for an air mat that can be easily used by anybody without taking time, and that can be used safely without impairing portability.

[0007]

The first invention relates to a gas supply mechanism for an air mat, and relates to an air mat, a gas source for inflating the air mat, and an ejector for supplying a jet gas ejected from the gas source to the air mat side. And an opening hole for opening the inside of the ejector to the atmosphere side, and the jet gas is supplied to the air mat while swirling the atmosphere in the ejector.

The second invention is characterized in that a small gas cylinder is used as a gas source in the first invention.
The third invention is characterized in that, in the first invention, a gas generator that ignites a solid or liquid gas generating material and generates a gas by a chemical reaction is used as a gas source.

[0009]

1 and 2 show an embodiment of the present invention. In this embodiment, a small gas cylinder 1 containing a liquefied gas of carbon dioxide is used as a gas source. An ejector 2 is detachably attached to the ejection port of the small gas cylinder 1. An open hole 3 is formed in the ejector 2, and the inside thereof is opened to the atmosphere.

As the ejector 2, for example, there is one as shown in FIG. At one end of the body 4 is formed an introduction port 5 connected to the ejection port of the small gas cylinder 1, and at the other end is formed an exhaust port 6 described later. And
From the introduction port 5 side, a pressurized gas chamber 7, a first decompression chamber 8, a second decompression chamber 9, a third decompression chamber 10, and an exhaust chamber 11 are formed adjacent to each other via a partition. The first partition from the pressurized gas chamber 7 side is connected to these partitions so that the respective chambers 7 to 11 communicate with each other.
Tube 12, second tube 13, third tube 14, fourth tube 15
Are sequentially arranged in series on the same axis. Further, the opening 4 is formed in the body 4, and the first to third decompression chambers 8 are formed.
Are open to the atmosphere.

A supply port of an air mat 17 communicates with the exhaust port 6 of the ejector 2 through a nozzle 16. It is desirable that the nozzle 16 has a configuration that can be connected to the supply port of the air mat 17 with one touch and without leakage. Although not specifically shown, the supply port of the air mat 17 includes:
A check valve for preventing backflow of gas in the air mat 17 is incorporated.

Next, the operation of the gas supply mechanism for an air mat of this embodiment will be described. Opening the spout of the small gas cylinder 1, carbon dioxide gas g ₁ is ejected, it passes through the ejector 2. At this time, this is between the jet carbon dioxide g ₁ and the atmosphere g ₂ ambient can large velocity gradient, will there be working viscosity. As shown in FIG. 1, the surrounding air is swirled into the jet carbon dioxide gas by the viscosity, and a mixed gas of the carbon dioxide gas g ₁ and the air g ₂ flows to the exhaust port 6 side of the ejector 2. .

Moreover, if the atmosphere g ₂ is swirled in and the inside of the ejector 2 is evacuated, the atmosphere g ₂ is always supplied through the opening 3 and the jet carbon dioxide gas g ₁
It is incorporated one after another Maki is the atmosphere g ₂ in. Thus, a mixed gas of carbon dioxide gas g ₁ and the atmosphere g ₂ is supplied through the exhaust port 6 → nozzle 16 → supply port of the ejector 2,
The air mat 17 is inflated. In particular, in this embodiment,
Jet carbon dioxide g ₁ is the first to third vacuum chambers 8 of the ejector 2
At 10, because the multi-stage to go crowded Maki air _{g 2,}
It is possible to increase the amount of winding, and the ejector 2 can be reduced in size.

According to the air mat for the gas supply mechanism of this embodiment, since the supply to the crowded plated air g ₂ air mat into carbon dioxide g _1, it is possible to reduce the volume of the small gas cylinder 1. How much Komu Maki air g ₂ of,
Is determined by the flow velocity and flow rate of the jet carbon dioxide g _1, now, by adjusting the degree of opening of the spout of the small gas cylinder 1, carbon dioxide <br/> gas g _1: was the ratio of 2: Atmospheric g _{2 =} 1 And In this case, the amount of carbon dioxide g ₁ needed to inflate the air mat than if only carbon dioxide g _1, so that requires only one-third. Thus, if the volume of the small gas cylinder 1 can be reduced, the cost can be reduced and the portability can be improved. Then, it is no longer regulated by the High Pressure Gas Safety Law or the like , and can be widely spread in general.

The air mat 17 contains carbon dioxide g _1.
Not only alone, since a mixed gas of air g ₂ is filled, even when it is as flowing in tent or the like,
It does not cause oxygen deficiency. In particular, if and when sufficiently dilute to increase the ratio of air g _2, it is possible to ensure the safety. Note that the pressure of the mixed gas supplied to the air mat 17 is reduced by the amount of the air g ₂ introduced therein.
About gf / cm ² is sufficient. Therefore, it is possible to sufficiently cope with the small gas cylinder 1 without increasing the filling pressure.

In the embodiment described above, the small gas cylinder 1
Is used, but the gas generator described above may be used as the gas source. In this case, even gas heated to a high temperature by a chemical reaction, since Komu plated atmospheric g _2, it is possible to decrease the temperature rapidly. Therefore, there is no need to attach a radiator or the like, cost can be reduced, and portability can be improved.

[0017]

According to the first aspect of the present invention, the air mat does not need to be used, so that anyone can inflate the air mat easily and without spending time. In addition, since the amount of gas supplied from the gas source may be small as much as the air is introduced, the gas source can be made small and portability can be improved. Furthermore, even if the main component of the gas is carbon dioxide or nitrogen, a gas mixture with the atmosphere is supplied to the air mat,
These carbon dioxides and nitric acids are diluted, and can be used safely without causing an oxygen deficiency state.

According to the second aspect, in the first aspect, since the volume of the small gas cylinder can be reduced, the high pressure gas cylinder can be reduced.
It is no longer regulated by the Security Law and can be widely spread. According to the third invention, in the first invention, even if the gas has a high temperature due to a chemical reaction, the gas is introduced into the atmosphere, so that the temperature can be rapidly lowered. Therefore, there is no need to attach a radiator or the like, cost can be reduced, and portability can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing a gas supply mechanism for an air mat according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an ejector.

[Explanation of symbols]

1 small gas cylinder 2 ejector 3 open pores 17 air mat g ₁ CO g ₂ atmosphere

Claims (3)

(57) [Claims] An air mat, a gas source for inflating the air mat, an ejector for supplying jet gas ejected from the gas source to the air mat side, and an open hole for opening the inside of the ejector to the atmosphere side, In the ejector,
A gas supply mechanism for an air mat, wherein the jet gas is supplied to the air mat while swirling the atmosphere. 2. A gas supply mechanism for an air mat according to claim 1, wherein a small gas cylinder is used as a gas source. 3. The gas supply mechanism for an air mat according to claim 1, wherein a gas generator that ignites a solid or liquid gas generating material to generate a gas by a chemical reaction is used as the gas source.