JPH11141192A - Connection structure of air chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the rigidity of the connecting sections of air chambers in the connection structure of the air chambers, in which the air chambers are joined mutually at an approximately right angle. SOLUTION: A vent hole 1b bored at the end section of one air chamber a2 expanded in an approximately columnar shape and a vent hole 1a bored to the outer circumferential surface of the other air chamber a1 expanded in a columnar shape are superposed, and the peripheral sections of the vent holes 1a, 1b are bonded mutually and airtightness is held. The peripheral section of an extended section 4 cylindrically extended from the outer circumference of the end section of one air chamber a2 is joined with the outer circumferential surface of the other air chamber a1, and both air chambers a1, a2 are connected firmly by the mutual adhesion of the peripheral sections of the vent holes a1, a2 and the bonding power of the extended section 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between air chambers that expand in a columnar shape.

[0002]

2. Description of the Related Art Among conventional tents, there is an air tube tent which forms a frame structure of a tent by combining pillar-shaped air chambers made of an airtight sheet such as a rubberized cloth.

FIGS. 7 and 8 show an air tube tent 100 in which the frame structure of the tent is constituted by an air chamber as described above. The air tube tent 100
It is formed by combining a plurality of columnar air chambers 101 formed in an arch shape. The columnar air chamber 101 is formed by connecting several columnar air chambers to form an arch and connecting the columnar air chambers 101 ′ horizontally to the center and left and right side surfaces of the air chamber 101. I have.

In the air tube tent 100, a plurality of columnar air chambers 101 are prepared as described above, and these columnar air chambers 101 are connected to each other via a fastening member 102 provided at the end of each air chamber 101 '. Along with connecting sequentially, along the tip of each air chamber 101 ′ of the columnar air chamber 101 connected to the end,
The frame structure 100a of the air tube tent 100 is configured by connecting the columnar air chambers 101 ″ formed in an arch shape like the columnar air chamber 101 (FIG. 8).

[0005] The frame structure 100 constructed as described above.
a is assembled on a floor sheet 100c laid on the ground, and an awning 1 serving as an outer skin is placed on the frame structure 100a.
00b. Above tent 100b
Sew a waterproof sheet according to the outer shape of the framework structure 100a and cover the framework structure 100a to function as a roof surface and a peripheral wall for preventing rain and wind.

[0006]

The frame structure 100a of the air tube tent 100 constructed as described above.
Are column-shaped air chambers 101 formed in an arch shape, and 10
In order to connect 1 ″, the required number of air chambers 10 (three in the case of the air tube tent) from the columnar air chamber 101
1 ′ is extended in a cantilever manner, and the adjacent columnar air chambers 101, 101 ″ are connected to each other via these air chambers 101 ′, so that the respective columnar air chambers 101, 101 ″ have a predetermined interval. And maintain the strength to be able to stand alone as the frame structure 100a.

That is, the frame structure 100 a
One end of the air chamber 101 'is connected to the peripheral surface of the air chamber 101 at a right angle, and the connection part 100d connects the air chambers of the air chambers 101 and 101' to each other and connects the air chambers 101 and 101 '. While maintaining strength, the frame structure 100a as described above
It is configured to function as a part of.

[0008]

FIG. 9 shows a connecting portion 100d of the skeleton structure 100a described above. The connection portion 100 d is provided on the outer peripheral surface of the air chamber 101 with a vent 121.
And a vent 122 is opened at the axial position of the end of the air chamber 101 ', and the vents 121, 122 are connected to each other via joining cloths 123, 124 cut into a ring shape. It is glued. The bonding cloth is composed of two bonding cloths 123 bonded between the ventilation holes 121 and 122 and a bonding cloth 124 sandwiching the ventilation holes 121 and 122 from the outside. 121 and 122 are adhered so as to sandwich them.

As described above, each connecting portion 100d of the skeleton structure 100a is connected to the air chambers 1 by the adhesive force of the joining cloths 123 and 124 that connect the ventilation holes 121 and 122 in an airtight manner.
01 and 101 'are connected. However, since the connecting portion 100d connecting the air chambers 101 and 101 'has a smaller diameter than the air chambers 101 and 101', the frame structure 100a is easily deformed from each connecting portion 100d. Become. As a result, the rigidity of the frame structure itself may be insufficient depending on the form and size of the frame structure. An object of the present invention is to improve the rigidity of the connecting portion in the air chamber connection structure that connects the air chambers at substantially right angles as described above.

[0010]

In order to solve the above-mentioned problems, a connection structure for air chambers according to the present invention is characterized in that one end of one air chamber which expands substantially in a columnar shape is connected to the other end which expands in a substantially columnar shape. A connection structure of the air chamber to be connected to the outer peripheral surface of the air chamber of the air chamber, the ventilation hole opened in the axial center of the one air chamber end,
The air holes formed on the outer peripheral surface of the other air chamber are overlapped with each other, and the peripheral edges of the two air holes are adhered to each other to maintain airtightness, and to be cylindrical from the outer periphery of the end of the one air chamber. The peripheral portion of the extended portion is joined to the outer peripheral surface of the other air chamber.

According to the above-mentioned means, ventilation holes are respectively formed in the end axis of one of the air chambers which expands in a substantially columnar shape and the outer peripheral surface of the other air chamber. The air hole formed at the end of one of the air chambers is overlapped with the air hole formed on the outer peripheral surface of the other air chamber. The ends are connected at substantially right angles to the outer peripheral surface of the other air chamber, and the interiors of both air chambers are in communication.

Also, from the outer periphery of the end of the one air chamber,
The cylindrical extension extends, and the peripheral edge of the extension joins to the outer peripheral surface of the other air chamber, and connects between the end of one air chamber and the outer peripheral surface of the other air chamber. The extending portion is formed as a cylindrical hollow body surrounding the periphery of the connecting portion between the two air chambers, and connects the two air chambers by extending the outer peripheral surface of one end of the air chamber as it is. Therefore, the load applied to the connection portion between the air chambers is supported by the extension portion together with the adhesive force between the ventilation holes.

According to a second aspect of the present invention, there is provided an air chamber connecting structure in which an end of one air chamber which expands in a substantially cylindrical shape is connected to an outer peripheral surface of the other air chamber which expands in a substantially cylindrical shape. Connection structure, wherein the axial center portion of the one air chamber end is bonded to the outer peripheral surface of the other air chamber, and the extended portion cylindrically extends from the outer periphery of the end of the one air chamber. Is joined to the outer peripheral surface of the other air chamber.

The axial center of one end of one of the air chambers that expands into a substantially cylindrical shape is connected to the outer peripheral surface of the other air chamber by bonding. Thus, one end of the air chamber is connected substantially at right angles to the outer peripheral surface of the other air chamber. The two air chambers are independent of each other, and the two air chambers do not communicate with each other even by the connection. A cylindrical extension extends from the outer periphery of the end of the one air chamber, and the peripheral edge of the extension is joined to the outer peripheral surface of the other air chamber. To the outer peripheral surface of the air chamber. The extension portion is formed as a cylindrical hollow body surrounding the periphery of the connection portion between the two air chambers, and connects the two air chambers by extending the outer peripheral surface of one air chamber end as it is. Therefore, the load applied to the connection between the air chambers is supported by the extending portion together with the adhesive force between the shaft core at the end of the air chamber and the peripheral surface.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The air tube tent shown in FIGS. 1 to 4 is a large tent to be installed, for example, at the time of a disaster or the like. a ′, a plurality of the air chamber units a ′, in the case of this embodiment,
The two air chamber units a 'are arranged side by side to form a frame structure a. The skeleton structure a is configured as an air tube tent by installing it on a floor sheet c and covering the surface thereof with an awning b made of a synthetic resin sheet such as rubberized cloth or tarpaulin (FIGS. 1 and 1). 2).

The air chamber unit a 'is configured such that two arch-shaped air chambers a1 are connected to each other by an air chamber a2 to form a two-arch air chamber a1 and stand alone. I have. FIG. 3 shows the air chamber unit a ′.
3 shows a connection portion d between the air chamber a1 and the air chamber a2. Vent holes 1a are respectively opened at locations where the air chambers a2 are connected on the side surfaces of the arched air chambers a1. On the other hand, the air hole a 1
a ventilation hole 1b having the same diameter as a is opened, and this ventilation hole 1b is connected to the ventilation hole 1a opened on the side surface of the air chamber a1 through the joining cloth 3 and the joining cloth 2 cut into a ring shape. As a result, the end of the air chamber a2 is connected to the air chamber a1 at a substantially right angle.

The joining cloth 3 has an inner diameter of the ventilation holes 1a, 1b.
The two cloths 3a, 3b are formed by overlapping the two circular cloths 3a, 3b and sewing along the periphery of the opening.
They are firmly joined between them.

The bonding cloth 3 has one side adhered to the periphery of the vent 1a on the surface of the air chamber a1 and the other side bonded to the air chamber a1.
It is adhered around the ventilation port 1b at the two end surfaces. Another joining cloth 2 is configured in the same manner as the above-described joining cloth 3, but is configured such that the diameter of the bonding portion is slightly smaller than the inner diameters of the ventilation ports 1a and 1b. The joining cloth 2 is attached by fitting the annular cloths 2a and 2b which are overlapped and joined inside the air holes 1a and 1b joined together as described above, and the inner surface of one of the annular cloths 2a is attached to the air chamber a1. The inner surface of the other annular cloth 2b is adhered to the periphery of the air hole 1b of the air chamber a2, while the inner surface is adhered to the periphery of the air hole 1a.

As a result, the ventilation holes 1 of both air chambers a1 and a2 are
a and 1b are joined in a state sandwiched by the joining cloth 2 and the joining cloth 3, and one end of the connecting air chamber a2 is substantially attached to the side surface of the arch-shaped air chamber a1 by the adhesive force. The air chambers a1 and a2 are connected at right angles, and the air chambers a1 and a2 are connected in a single air chamber shape through the air holes 1a and 1b.

Further, from the outer periphery of the end of the connecting air chamber a2, an extending portion 4 having substantially the same diameter as that of the air chamber a2 is extended, and the leading end edge of the extending portion 4 is attached to the outer peripheral surface of the air chamber a1. It is glued.
The extending portion 4 is a cylindrical body having substantially the same diameter as the air chamber a2, and is configured using the same rubberized cloth as the air chamber a2. The base end side peripheral edge of the extension portion 4 is adhered along the outer peripheral surface of the connecting air chamber a2, and the extended end side edge is adhered along the outer peripheral surface of the air chamber a1. Further, the peripheral portion of the extension portion 4 on the air chamber a1 side is cut in a curved shape so as to match along the outer peripheral surface of the air chamber 1 having a substantially semicircular cross section (FIG. 3). The connection portions d are used in the same manner at both ends of each connecting air chamber a2 that connects the arched air chambers a1 of the air chamber unit a '.

According to the connection portion d of the air chamber unit a 'configured as described above, the communication between the air chambers a1 and a2 is established through the adhesive force of the joining cloths 2 and 3 joining the ventilation holes 1a and 1b. Keep the connection. At the same time, the extension 4
The air chambers a1 and a2 are connected to each other in a form in which the outer peripheral surface of the end of the air chamber a2 is extended as it is as a cylindrical body surrounding the joining cloths 2 and 3. That is, the load applied to the connecting portion d of the air chambers a1 and a2 is firmly supported by the extending portion 4 having the same diameter as the air chamber a2 together with the adhesive force of the joining cloths 2 and 3 for bonding the air holes 1a and 1b. Is done. As a result, both air chambers a1,
The strength, particularly the rigidity, of the connection portion d of a2 is increased, and a connection structure resistant to deformation is obtained.

The connection structure of the air chamber unit a 'may be configured as shown in FIG. In this air chamber connection structure, the outer peripheral surface of the end of the connecting air chamber a2 'is integrally extended as an extension 4', and the peripheral edge of the member cloth 20, which is the end surface of the air chamber a2 ', is connected to the air chamber. This is configured as an air chamber a2 'by bonding to the inner surface of a2'.
The connection structure shown in FIG. 4 functions similarly to that shown in FIG.

According to the gist of the present invention, the bonding structure between the vent formed at the end of one air chamber and the periphery of the vent formed at the outer peripheral surface of the other air chamber is direct. Even so,
Alternatively, the bonding may be performed via a connecting member such as a bonding cloth as in the above-described embodiment, and any existing bonding structure may be used. For example, as shown in a connection structure of air chambers as shown in FIG.
b, a rubber seat 21 may be provided, and an annular cloth 2a bonded to the ventilation port 1a side of the air chamber a1 may be bonded to a peripheral surface of a through hole 21a formed in a shaft core portion of the rubber seat 21.

Into the inner peripheral surface of the through hole 21a, a screw cylinder 21a 'for screwing a one-way valve (not shown) for airtight inspection is fitted and integrated, and at the time of manufacturing, the connecting air chamber a2 is formed. '
Is completed as a single unit, a one-way valve (not shown) for airtightness inspection is mounted in the through-hole 21a, and air is injected from the one-way valve to expand the air chamber a2 ', so that the air chamber a2' is expanded. The airtightness inspection of the chamber a2 'can be performed in a single state.

When the airtightness inspection of the air chamber a2 'is completed, the one-way valve (not shown) is removed, and the air chamber a2' and the air chamber a
Then, the process proceeds to the step of connecting to No. 1. After the air chambers a2 'and a1 are connected, a final airtightness test is performed. Since the airtightness test of the air chamber a2' alone has already been completed as described above,
In the state where a leak has occurred at the time of the final leak check, the range of the leak can be narrowed to a range other than the air chamber a2 ', so that the work of searching for the place of the leak and repairing it is greatly reduced. it can.

In the air chamber connection structure shown in FIG. 6, a connection portion between the air chamber a1 and the air chamber a2 'is connected to the air chamber a1' via a substantially cylindrical extension 4 ', similarly to the structure shown in FIG. Connected. However, the connection structure of the air chambers
1 and a2 are connected to each other, and there is no communication between the two air chambers a1 and a2 via the ventilation holes 1a and 1b unlike the air chamber connection structure shown in FIGS.

That is, the connection between the axial center portion at the end of the air chamber a2 'and the peripheral surface of the air chamber a1 is made via the two joining cloths 3a and 3b cut into a disc shape. , A2 'are bonded and connected, and the periphery thereof is joined via an extension 4' similar to that shown in FIGS. In the frame structure of the air tube tent, there are places where independent air chambers are connected at right angles, but by adopting the connection structure as described above in such connection places, the rigidity of the connection parts is improved. can do. In the above-described air chamber connection structure, as in the air chamber connection structure shown in FIG. 3, both air chambers a1 and a
2 'may be joined (not shown).

The connection structure of the air chambers of the present invention comprises the air chambers a1, a
Any structure may be used as long as the structure is formed by connecting the two at substantially right angles or obliquely, and may be used for a rubber boat or the like in addition to the air tube tent described above.

[0029]

As described above, the air chamber connection structure of the present invention has a structure in which the air hole formed at the end of one air chamber and the air hole formed on the outer peripheral surface of the other air chamber overlap. In addition, the peripheral portions are adhered to each other, airtightly maintained, and the peripheral portion of the extension portion extending cylindrically from the outer periphery of the end of the one air chamber is joined to the outer peripheral surface of the other air chamber. Things. Therefore, at the connecting portion of the two air chambers connected at a substantially right angle, the two air chambers are connected to each other by the bonding of the peripheral edges of the two air holes to maintain the communication state and to surround the periphery of the air holes. The two air chambers are joined to each other by the cylindrical extension.

Thus, the load applied to the connecting portion between the two air chambers is controlled by the bonding portion between the peripheral portions of the ventilation holes and the extending portion.
It can be firmly supported and can prevent deformation of the connecting portion. In particular, since the extending portion is joined to the outer peripheral surface of the other air chamber in a state where the outer peripheral surface of the one air chamber is extended as it is, the substantial outer diameter of the connecting portion is enlarged, Can be effectively prevented. For example, when the connection structure of the air chamber of the present invention is used as a frame structure of an air tube tent, the rigidity of each connection portion of each frame structure is greatly improved, and the strength of the air tube tent is effectively improved. It can be carried out.

According to a second aspect of the present invention, the connection structure of the air chamber has a shaft portion at one end of the air chamber adhered to an outer peripheral surface of the other air chamber, and a cylindrical shape is formed from the outer periphery of the end of the one air chamber. The outer peripheral portion of the extension portion is joined to the outer peripheral surface of the other air chamber. Therefore, the load applied to the connection portion between the air chambers is, together with the adhesive force between the axial center portion of one air chamber end portion and the peripheral portion of the other air chamber, a cylinder formed so as to surround the periphery of the bonded portion. The two air chambers are joined to each other by the extended portions.

Therefore, the load applied to the connection between the two air chambers can be increased by the adhesive force between the shaft core at the end of one air chamber and the peripheral surface of the other air chamber and the extension around the air chamber. It can be supported to prevent deformation of the connecting portion. In particular, since the extending portion is joined to the outer peripheral surface of the other air chamber while the outer peripheral surface of the one air chamber is extended as it is, the substantial outer diameter of the connecting portion is enlarged, Can be effectively prevented. For example, when the connection structure of the air chamber of the present invention is used for a connection portion between independent air chambers in a frame structure of an air tube tent, the rigidity of the connection portion is greatly improved, and the strength of the air tube tent is reduced. Can improve effectively

[Brief description of the drawings]

FIG. 1 is a perspective view showing an air tube tent embodying the present invention.

FIG. 2 is an exploded perspective view of a floor sheet and a frame structure.

FIG. 3 is a longitudinal sectional view showing a connection portion of the air chamber.

FIG. 4 is a longitudinal sectional view showing an air chamber connecting portion having a structure in which an outer peripheral surface of a connecting air chamber is directly extended.

FIG. 5 is a longitudinal sectional view showing a connection portion of an air chamber in which a rubber seat is provided in the connection portion.

FIG. 6 is a perspective view showing a conventional air tube tent.

FIG. 7 is a perspective view showing a conventional air tube tent.

FIG. 8 is a perspective view showing a frame structure of the air tube tent.

FIG. 9 is a perspective view showing a connection part of an air chamber of a conventional air tube tent.

[Explanation of symbols]

 a: Frame structure a1, a2, a2 '... Air chamber b: Tent c: Floor sheet d: Connection part 1a, 1b: Vent 4,4' ... Departure

Claims (2)

[Claims] An air chamber connection structure for connecting an end of one of the air chambers that expands in a substantially columnar shape to an outer peripheral surface of another air chamber that expands in a substantially columnar shape. The air hole opened in the axial center of the air chamber end and the air hole opened in the outer peripheral surface of the other air chamber are overlapped, and the peripheral edges of both air holes are adhered to each other to maintain airtightness, Further, an air chamber connection structure in which a peripheral edge portion of a cylindrical portion extending from an end outer circumference of the one air chamber is joined to an outer peripheral surface of the other air chamber. 2. An air chamber connection structure for connecting an end of one of the air chambers that expands in a substantially columnar shape to the outer peripheral surface of the other air chamber that expands in a substantially columnar shape. The shaft core at the end of the air chamber is adhered to the outer peripheral surface of the other air chamber, and the peripheral portion of the extended portion extending cylindrically from the outer periphery of the end of the one air chamber is connected to the outer periphery of the other air chamber. Air chamber connection structure joined to the surface.