JP2536155Y2 - Airborne body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an airborne body that floats in the air by balancing the buoyancy acting on the balloon with the gravity of a balance weight attached to the balloon.

(Prior Art) In order to float a balloon in the air, it is important to prevent the gas sealed in the balloon from leaking out for a long time. Therefore, the film constituting the balloon must have good gas barrier properties.

In order to float the balloon in the air, it is preferable to balance the buoyancy acting on the balloon with the gravity acting on the balloon.

In view of the above, there has been proposed a film using an ethylene vinyl alcohol copolymer resin having good gas barrier properties as a film material for a balloon. (63-1
Further, in order to further improve the gas barrier property, there is also known a material obtained by vapor-depositing the above-mentioned ethylene-vinyl alcohol copolymer resin aluminum metal. (See JP-A-2-43036) On the other hand, various floating balloons have been proposed in which a balance weight is attached to a balloon so that the weight of the balance weight can be adjusted so that the balloon floats in the air.

For example, it has been proposed that a hanging string is hung from a balloon and a balance weight is attached to the hanging string. (See Japanese Utility Model Application Laid-Open No. 59-69796) Further, there has been proposed a device in which a peelable seal is attached to the surface of a balloon and the seal is used as a balance weight. (Refer to Japanese Utility Model Laid-Open No. 61-106299) (Problem to be Solved by the Invention) However, in the case of hanging a hanging string from a balloon and attaching a balance weight to the hanging string,
There was a risk that the hanging string would touch an obstacle when suspended in the air, which would hinder the suspension. Further, in this proposal, since the balance weight is adjusted by attaching or detaching a balance weight made of minute pieces, the workability of the adjustment work using the minute pieces is not very good. Experiments have shown that for a relatively small balloon with a volume of 15 liters, a weight change of 0.25 g raises or lowers the balloon. Therefore, the weight change must be at least about 0.25 g. It is very difficult to attach and detach such small pieces.

Further, when a peelable seal is attached to or peeled off from the surface of the balloon, the film of the balloon may be damaged during the peeling operation of the seal, and the gas barrier property may be reduced.

Therefore, an object of the present invention is to improve the drawbacks of the above-mentioned conventionally known floating balloon, to easily adjust the balance weight, to prevent the balance weight from becoming an obstacle when floating, and to use a material having a high gas barrier property. The aim is to provide an airborne body using synthetic resin.

(Means for Solving the Problems) The feature of the present invention is that a balance weight is formed of a card provided on the outer peripheral surface of the balloon main body, and the card has one reference weight which is balanced with the buoyancy of the balloon main body. And a plurality of weight adjustment cards having a weight gradually increased from the reference weight and a weight gradually decreased from the reference weight.

Another feature of the present invention resides in that a card made of a magnet or a magnetic material is adsorbed to an adsorbing portion made of a magnetic material or a magnet provided in a balloon body, and further, a sublimable material is balanced. It is used as a weight to automatically adjust the balance weight by matching the weight loss caused by sublimation of the balance weight made of the sublimating agent with the buoyancy reduction of the balloon caused over time.

Furthermore, the feature of the present invention is that the film of the balloon body has a three-layer structure in which an aluminum vapor-deposited layer is formed outside the ethylene vinyl alcohol copolymer resin layer and a heating adhesive layer is formed inside. .

(Operation) The airborne body of the present invention configured as described above is floated as follows.

A balance weight having a predetermined weight is attached to the suction part of the balloon body, and the balloon body is selected so as to float in the air.

If the weight of the balance weight is lighter now, heavier balance weights are sequentially attached, and a balance weight that just balances is selected. In the case where the weight of the balance weight is heavy, the weight is selected in the same manner and the balance weight is selected.

When the balance weight is a card, a card having a predetermined weight is inserted or sucked into a card holder or a suction portion of the balloon main body, and the balloon main body is selected so as to float in the air.

If the weight of the card is now lighter than that, the card is inserted or sucked sequentially, and a card that is just balanced is selected. When the weight of the card is heavy, the selection is performed sequentially in the same manner, and the card to be just balanced is selected.

In the case of using a sublimation agent, the balance weight composed of the sublimation agent automatically adjusts the weight, so that it is not necessary to replace the balance weight for a long period of time.

(Embodiments) Various embodiments of the present invention will be described below with reference to the drawings.

What is important in the production of an air suspension is that a material having sufficient strength and gas barrier properties must be selected as a material for the film of the balloon body. In particular, in order to exhibit sufficient functions and commercial properties as an airborne body, it must be ensured that the sealed gas is maintained in a floating state for 30 days or more without gas leakage.

In addition, the balance adjustment operation using the balance weight must be simple and reliable. Experiments have shown that a balloon with a relatively small volume of about 15 liters can raise or lower by a weight change of 0.25 g. Therefore, the weight must be easily changed by at least about 0.25 g per 15 liters of volume.

In the present invention, from the viewpoint of gas barrier properties, as shown in FIG. 1, an aluminum vapor-deposited layer 2 is formed on the outer side of an ethylene-vinyl alcohol copolymer resin layer 1 and a polyethylene-based layer is further formed on the inner side, as shown in FIG. Has a three-layer structure in which a heating adhesive layer 3 made of a heat seal material is formed.

In order to manufacture the balloon body, pieces of the film, which is a material for forming the balloon body, are joined together to manufacture various shapes. The simplest method for joining is to melt and bond the film. However, since the ethylene-vinyl alcohol copolymer resin and the vapor-deposited aluminum do not have a fusion bonding effect due to heat, fusion bonding is performed by adding a polyethylene resin layer.

FIG. 2 shows a comparison of gas barrier properties between the three-layer film of the present invention and other film materials.

In FIG. 2, the vertical axis represents the remaining amount of the sealed gas (helium) (Y
%), And the horizontal axis indicates the number of elapsed days (X days).

As shown by the symbol A in the figure, the residual amount characteristics of the three-layer structure film of the present invention show that the sealed gas is sufficiently retained for 30 days or more, and that the sealed gas of 75% is maintained even after 40 days. , The residual gas characteristics of the aluminum-deposited polypropylene film are reduced by half in 4 days as shown by reference numeral C in the figure, and the residual amount characteristics of the aluminum-deposited nylon film are shown by B in the graph. In 29 days, the sealed gas halved in 29 days, and the characteristics of the residual amount of ethylene vinyl alcohol copolymer resin alone were reduced in 40 days as shown in D in FIG.
It turns out that only 57% remains.

In addition, when the breaking strength was tested with a 40 cm diameter balloon, the three-layered film of the present invention broke at 120 kg, while the aluminum-evaporated polypropylene film broke at 35 kg.
Destroyed by.

Therefore, it was found that the three-layer film of the present invention was also excellent in breaking strength.

Next, the balance adjusting mechanism of the balloon body according to one embodiment of the present invention will be described.

Referring to FIG. 3, the balloon body 4 is filled with a gas having a specific gravity lower than that of air, such as helium gas. A card holder 5 is provided on the surface of the balloon body 4, and the card holder 5 is formed in a pocket shape by attaching three sides of a rectangular sheet to the surface of the balloon body 4. The shape of the card holder 5 is not limited to the above-described structure as long as it has a structure for holding a card described later. Further, the shape of the card is not limited to a square, but may include other shapes such as a structure having a knob for facilitating removal.

The weight adjustment card 6 includes a plurality of cards 6 ₁ , 6 ₂ ,
6 _3, 6 _4, 6 and consist _5, placed define a weight card 6 ₃ commensurate offset the buoyancy acting on the balloon body 4, successively predetermined weight only stepwise the weight of the reference card as a border Prepare and place the increased and decreased cards. In this example, place the reference card 6 _3, for example, as 3.5 g, and the card 6 _2, 6 ₁ weight by 0.25g decreases respectively, 0.25g
Prepare and place cards 6 ₄ and 6 ₅ , each of which increases in weight. still,
More cards may be prepared and stored as needed.

The operation of inserting the card 6 into the card holder 5 is performed as follows.

First, insert a reference card 6 ₃ to the card holder 5.
Then assess whether the balloon body 4 is airborne, inserting the reference card 6 ₃ when the card weight is insufficient to pull the card from the card holder 5, a heavy card 6 ₄ than the card holder 5 in place I do. Reference card 6 ₃
If the weight is too heavy, it is adjusted by inserting the card 6 ₂ instead. Even if the weight is not achieved, another card _61, or the card 6 ₅ used selectively.

In the above, the number of cards to be prepared is prepared in accordance with the number of steps in which the weight is changed stepwise with respect to the reference card, and two-step cards are prepared before and after the reference card as described above. It is not limited to
Depending on the volume of the balloon body, three or more steps are appropriately selected and adopted. Further, the weight that changes stepwise is not limited to 0.25 g as described above, and various weights are selected and adopted depending on the volume of the balloon body.

Here, the material of the card is not particularly limited, but paper, synthetic resin, metal, or the like is preferably used. Since the paper has a hygroscopic property, its weight is easily changed, so that a synthetic resin or a metal is more preferable. However, a paper having a low hygroscopic property is sufficiently practicable.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the following configuration is adopted instead of the card holder.

A magnetic piece such as iron is adhered to the surface of the balloon body 7 to form an adsorbing portion 8, and a card 9 made of a sheet-like magnet piece is used as a card to be adsorbed on the adsorbing portion 8. Here, the card 9 to be used is also based on a plurality of cards whose weights are changed stepwise, similarly to the card shown in FIG. The same applies to the case where a magnet piece is attached to the balloon body and the card is made of a magnetic material such as an iron piece, and the present invention includes such a structure.

FIG. 5 shows still another embodiment of the present invention, in which a sublimation agent such as camphor is employed as a balance weight, and the camphor sublimates according to the amount of gas filled. It gradually becomes lighter and automatically balances weights. That is, the balance weight 11 enclosing the camphor 10 is attached to the balloon body 12. camphor
10 is accommodated in a bag 13 made of a thin film, and the bag 13 has minute through holes 13 ₁ so that volatiles of the camphor 10 gradually pass through.
Is formed. By adjusting the opening area by selecting the hole 13 number ₁ properly, in which the weight reduction corresponding to the missing amount of filler gas contained in the balloon body 12 is performed. In addition, the sublimation agent is not limited to camphor, but also includes naphthalene and the like.
Further, it also includes a structure in which water or alcohol is sealed and placed, and this is gradually evaporated, and a material called a sublimation agent also includes a material that performs such an evaporating action and a volatilizing action. .

Helium is most preferable as the gas sealed in the balloon body, but the present invention is not limited to helium, and includes a gas such as hydrogen which is lighter than other air.

(Effects of the Invention) According to the air suspension of the present invention, the following effects are obtained.

With the weight balance using the card method, the weight adjustment is simple and reliable.

The weight balance by the card method has a structure in which the card is directly attached to the surface of the balloon body, so that it does not become an obstacle when floating, and furthermore, there is no discomfort in appearance.

When the card is attached and detached by using a magnet, attachment and detachment of the card are further simplified.

In the case of using a sublimation agent, the weight can be automatically adjusted, so that the weight does not need to be changed over a long period of time, and the commercial value is further increased.

Since the film constituting the balloon body has good gas barrier properties, the film floats stably for a long period of time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the material of the film of the balloon body used in the present invention, FIG. 2 is the vertical axis showing the remaining amount of the sealed gas (Y%), and the horizontal axis is the elapsed days (X days). FIG. 3 is a sectional view of an airborne body showing an embodiment of the present invention. FIG. 4 is a sectional view of an airborne body showing another embodiment of the present invention, and FIG. 5 is a sectional view of an airborne body showing still another embodiment of the present invention. 1: Ethylene-vinyl alcohol copolymer resin layer 2: an aluminum deposited layer 3: heat adhesive layer 4: balloon body 5: Card Holder 6 (6 _1, 6 _2, 6 _3, 6 _4, 6 _5): Card 7: Balloon body 8: Suction unit 9: Card 10: Camphor 11: Balance weight 12: Balloon body 13: Bag body 14: Bag body 15: Through-hole

Claims (4)

(57) [Scope of request for utility model registration] 1. A floating body having a balloon body filled with a gas having a specific gravity lower than that of air and a balance weight detachably attached to the balloon body so as to match the buoyancy of the balloon body. Is composed of a plurality of cards selectively inserted into a card holder provided on the outer peripheral surface of the balloon main body, wherein the card has one reference weight card that balances the buoyancy of the balloon main body, and a step that is higher than the reference weight. An air suspension comprising a plurality of weight adjusting cards each of which has a weight that has become heavier and a weight that has become gradually lighter than the reference weight. 2. A floating body in the air having a balloon body filled with a gas having a specific gravity lower than that in the air and a balance weight detachably attached to the balloon body so as to match the buoyancy of the balloon body. It consists of a plurality of magnets or cards made of a magnetic material that are attracted to the attracting portion made of a magnetic material or a magnet attached to the balloon body, and the card has one reference weight card that balances the buoyancy of the balloon body. And a plurality of weight adjusting cards each having a weight gradually increased from the reference weight and a weight gradually decreased from the reference weight. 3. A floating body having a balloon body filled with a gas having a specific gravity lower than that of air and a balance weight detachably attached to the balloon body so as to match the buoyancy of the balloon body. An air-floating body comprising a sublimation agent attached to the balloon main body, wherein the sublimation agent is encapsulated in such a manner that the sublimation agent gradually sublimates by an amount corresponding to a decrease in buoyancy of the balloon main body. 4. The film of the balloon body is formed by vapor deposition of aluminum on the outside of an ethylene vinyl alcohol copolymer resin layer.
The air floating body according to any one of claims 1 to 3, wherein the air floating body has a three-layer structure in which a heating adhesive layer is formed inside.