JPH11172966A - Expansion type roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable temporary roof of a tent, a warehouse, etc., by cutting an upper face cloth and a lower face cloth less expandable than the upper face cloth to a predetermined shape, bonding peripheral fringe parts thereof, forming them like a bag, and filling air therein to form a dome-like roof. SOLUTION: A rubber-coated cloth having smaller fixed load elongation than an upper face cloth 3 is cut to a predetermined shape to form a lower face cloth 4. The upper face cloth 3 and the lower face cloth 4 cut into a rectangular shape are arranged opposingly, peripheral fringe parts 5 thereof are bonded to form a main body 2 of a bag-like air chamber, a skirt 8 is provided around it, and a valve 6 is provided on the lower face cloth 4. The upper face cloth 3 and the lower face cloth 4 can be peeled off readily, and a V tape 7 is bonded on inner faces across a connection part. The skirt 8 is fitted in a framework in which a pipe is stretched among a plurality of support columns to attach the main body 2 detachably, and pressurized air is filled into the main body 2 through the valve 6 to expand the upper face cloth 3 so as to form a dome-like roof. Consequently, it is possible to prevent the roof from hanging down, prevent the collection of rainwater, and perform the insullation and disassembly in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable roof used as a roof for temporary structures such as tents and temporary warehouses, as a transport vehicle, and as a rain shield for buildings under construction.

[0002]

2. Description of the Related Art Temporary buildings such as tents and temporary warehouses that are intended to be moved to an arbitrary location and used for a short period of time are easy to transport and easy to set up or dismantle in a short time. A structure in which a tent is stretched over a frame in which a beam made of a pipe or the like is erected between a number of pillars made of a pipe material or the like, or
7. The structure proposed in 4-2,670 was proposed in which an awning was stretched between inverted U-shaped air tubes in which the columns and beams were integrated. The awning stretched between the beams is tensed immediately after construction, but eventually becomes loose due to deformation due to residual stress when assembling the frame, stretching due to the weight of the awning, and sagging between the beams. If rainwater accumulates in the hanging part, the center of gravity will increase and stability against the wind will deteriorate, and the awning will be pushed by the wind, and the accumulated rainwater will suddenly fall and wet people around. Also,
Since the roof of the skeleton is made up of many components, it took a long time to set up and dismantle it.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a roof for use in a temporary building in which the problem of drooping of rainwater has been eliminated or a roof used as a rain shield for a transport vehicle, a building under construction, or the like. It was done.

[0004]

The awning is sagged because the roof is made of a member that has a significantly different rigidity between the awning and the rigid beam, which can flex freely. Therefore,
If the awning is made rigid and cannot be flexed freely, the beam is not required and the hanging of the awning is eliminated. If two air-impermeable sheets with different eases of elongating the awning are stacked and replaced with a bag-shaped one without an opening with a peripheral edge bonded, and then filled with air and inflated, the sheet becomes Tension increases the apparent rigidity of the entire bag, eliminating the need to support it with beams to prevent it from sagging. When the bag-like body is seated on the skeleton with the stretchable sheet side up and filled with air, both sheets are tensioned to increase the apparent rigidity, making it difficult to bend, and the stretchable sheet on top The side bulges more than the other side and forms a dome shape, forming an inclined surface through which rainwater flows down, so that rainwater does not accumulate. When disassembling and transporting, deflate the air and fold it.

That is, the present invention relates to a temporary roof which can be used as a roof of a temporary building such as a tent, a temporary warehouse, etc., a transport vehicle, and a rain-proofing of a building under construction. An inflatable roof having an air chamber formed in a bag shape with no opening, with an upper fabric cut into a shape and a lower fabric that is less stretchable than the upper fabric are arranged opposite to each other, and their edges are adhered over the entire circumference. It is.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a cross-sectional view of an inflatable roof according to an embodiment of the present invention. The inflatable roof 1 according to the present invention cuts a rubber-coated cloth in which a main body 2 is coated with a rubber on a base cloth into a predetermined shape, and cuts a rubber-coated cloth having a constant load elongation smaller than that of the upper cloth into a predetermined shape. The main structure is to form a bag-shaped air chamber in which the lower fabric 4 is opposed to each other and the peripheral edges of both are adhered over the entire circumference. There is provided a valve 6, which connects to an air source when filling the air, and means for fixing the body 2 to the side wall of the skeleton or temporary building, for example a skirt 8 as shown in FIG.

As the upper cloth and the lower cloth, a base cloth having one or both sides covered with rubber to be air-impermeable is used. Substantially cut shape of the lower cloth excluding glue allowance and deformation compensation during molding (hereinafter, the shape in the text indicates the shape of the substantial part excluding glue allowance and deformation allowance during molding) When the swelling of the upper cloth is reduced, the same shape is used by using a rubber-coated cloth that is less stretchable than the upper cloth. To make the lower cloth less stretchable than the upper cloth, any of the following methods is used alone or in combination. That is, a yarn having a lower constant load elongation rate is used as the yarn forming the base cloth as compared with the base cloth used for the upper cloth. The amount of yarn used is represented by the product of the thickness of the yarn and the number of ends defined by the number of yarns driven per 2.5 cm of the width of the base fabric. The number of twists defined by the product of the number of twists per 10 cm length of the yarn and the square root of fineness expressed in denier is reduced to reduce the number of pitches in the spiral structure of the twist. Further, the number of base cloths of the lower cloth may be made larger than that of the upper cloth to make the lower cloth hard to stretch.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an inflatable roof according to the present invention. Embodiment 1 FIG. 1 is a sectional view of an inflatable roof according to the present invention, and FIG. 2 is a partially cutaway perspective view showing a state where the inflatable roof according to the present invention is used for a tent. The inflatable roof 1 shown in FIG. 1 has two 35-denier nylon strands with a twist factor of 2928 (twist number of 350 t / 10
cm), the upper fabric 3 cut into a rectangular shape with rubber coated on both sides of a base fabric woven with 50 ends in both directions, and two 210-denier nylon strands, with a twist factor of 1640 (twist). The lower cloth 4 cut in the same shape as the upper cloth with rubber coated on the base cloth woven with the number of ends of 40 with the yarns twisted by the number 80) is arranged opposite to each other, and the peripheral edges 5 of both are bonded. A skirt 8 is provided around the main body 2 with means (not shown) for fixing the roof 1 to a roof support. A valve 6 for filling the main body 2 with the internal pressure air is provided on the lower surface cloth 4. Top cloth 3
The V tape 7 is stuck to the inner surface across the bonding portion to reinforce the bonding portion between the lower surface cloth 4 and the bonding portion of the lower fabric 4.

An example in which the inflatable roof 1 of the present invention (hereinafter, the inflatable roof is simply referred to as a roof) is used for a tent will be described with reference to FIG. The skirt 8 of the roof 1 is fitted to a frame 11 having a pipe 10 installed between a plurality of columns 9, and the main body 2 is freely attached and detached. The main body 2 is filled with internal pressure air via a valve 6 to expand the upper cloth 3. The roof 1 into a dome shape. Preferably, the height of the dome when visually recognizing that the lower surface cloth has started to bulge by gradually increasing the internal pressure, in other words, the lower surface cloth 4
From the top to the top cloth 3 is 1/10 of the length L of the roof
The main body is formed of the upper cloth and the lower cloth whose constant load elongation is adjusted in advance so as to become 1/3. If the height H when the lower cloth starts to bulge is lower than 1/10 of the roof length L, the rainwater flow efficiency is poor. Bulges greatly, and the ceiling appears to the people inside the tent, making it uncomfortable. If it is higher than 1/3, the force applied by the wind becomes large and it is easily deformed. Therefore, the internal pressure must be further increased so as not to be deformed. Required, which increases costs.

[0010] Example 2 Transporting parts and semi-finished products in factories, etc., inside and outside the building, with a structure in which wheels are attached to the container and not covered in normal times, but covered only in rainy weather FIG. 3 shows an example in which the roof of the present invention is used for a car cover. Cover 12
Is a bag-shaped air chamber in which a lower-side cloth 4 obtained by cutting a rubber-coated cloth into a rectangle and an upper-side cloth 3 obtained by cutting a rubber-coated cloth having a constant load elongation greater than that of the lower-side cloth are arranged to face each other, and their peripheral edges 5 are bonded. The main body 2 includes a frame air chamber 15 provided on the outer peripheral portion of the lower surface of the main body 2 and formed with a rubber-coated cloth so as to have a cylindrical shape during internal pressure filling. The cover 12 is folded at normal times, stored in a bag and loaded on a carrier, and when used, the main body 2 and the frame air chamber 15 are opened from the valve 6 provided on the upper cloth 3.
Filling the inside with air expands and increases rigidity. The inflated cover 12 is mounted on the carrier 13. The frame air chamber 15 adjusts the inner dimensions of the carrier
3 is slightly smaller than the outer dimension of the side wall 14 and is deformed so as to expand when fitted to the outside of the transport vehicle 13, and the reaction force of the deformation causes the cover 12 to tighten the side wall 14 so as not to be easily removed. I have.

Embodiment 3 A description will be given of a roof of another embodiment used for a circular living tent set up in a snowy region. The main body 2 is formed by joining six cut pieces 21 each having a shape shown in FIG. 4 obtained by cutting a rubber-coated cloth into a fan shape having a central angle α of 55 ° and joining them together with a straight line portion 22. Upper surface cloth 3 formed in a conical shape as shown
And a lower surface cloth 4 obtained by cutting a rubber-coated cloth, which is less stretchable than the upper surface cloth, into the same shape as the projection of the upper surface cloth 3, is opposed to each other, and the periphery of the double-sided cloth is adhered over the entire circumference to form a bag. Room. The roof 1 is provided with a ring-shaped frame air chamber 15 made of a rubber-coated cloth on the periphery of the lower surface of the main body 2 as shown in FIG. 5 showing a cross section when each air chamber of the tent is filled with air. A ceiling cloth 23 formed by superposing two rubber-coated cloths used for the lower cloth 3 is stretched under the frame air chamber 15 to form a ceiling air chamber 24. Each of the ceiling air chamber 24 and the main body 2 is provided with a valve 6 for filling with air, and a check valve 25 for communicating the main body 2 with the ceiling air chamber 24 is provided on the lower surface cloth. When the temperature drops at night and the air inside the main body 2 contracts and the internal pressure decreases, the check valve 2
Air is automatically replenished from the ceiling air chamber 24 via the air supply 5. The above roof 1 is connected to a number of annular air chambers 26.
Are fixed to the side wall 27 having a structure in which the tents are connected in parallel to each other, and a residential tent is set up.

The inflatable roof according to the present invention has a structure other than that of the above embodiment, provided that the main body is opposed to an upper cloth and a lower cloth which is less stretchable than the upper cloth and the peripheral edge is adhered to form a bag-shaped air chamber. , Air chambers can be installed on the outside of the main unit to install light reflectors, to prevent temporary warehouses, buildings under construction from raining,
The temporarily placed article can be freely used by changing its shape, for example, to avoid rain, and the method of fixing the article to the object to which the roof is attached is not limited. Also, when it is necessary to minimize the swelling of the lower cloth when the internal pressure is filled, a reinforcing cloth is attached to the lower cloth to reduce the elongation or the upper cloth is provided with a town. It is also possible to form by joining two to six cut pieces, to make the area larger than that of the lower surface cloth, and to easily swell with a low internal pressure.

[0013]

According to the present invention, a tent used as a roof for a temporary building such as a tent or a temporary warehouse, a transport vehicle, and a rain evasion for a building under construction, etc. is formed from an upper cloth and a upper cloth obtained by cutting a rubber-coated cloth into a predetermined shape. By bonding the lower edge cloth with the hardly stretchable lower surface and bonding the peripheral edge, and replacing it with an inflatable roof shaped like a bag,
The roof seen on the roof of the tent hangs down and accumulates rainwater. It is only necessary to spread and fix it to the skeleton and fill it with internal pressure air, and there is no need to provide beams in the skeleton, so that installation and dismantling can be performed in a shorter time.

[Brief description of the drawings]

FIG. 1 is a sectional view of an inflatable roof according to the present invention.

FIG. 2 is a partially cutaway perspective view showing a state in which the inflatable roof of the present invention is used for a tent.

FIG. 3 is a cross-sectional view illustrating a state where the inflatable roof according to the present invention is used as a rain cover for a transport vehicle.

FIG. 4 is a view showing the shape of a rubber-coated cloth piece used for the roof of the tent shown in FIG. 5;

FIG. 5 is a cross-sectional view showing a state where the inflatable roof of the present invention is used for a tent installed in a snowy region.

[Explanation of symbols]

 2 Body 3 Upper cloth 4 Lower cloth 5 Perimeter

Claims (3)

[Claims] 1. A foldable roof for use as a roof of a temporary building such as a tent, a temporary warehouse, a transport vehicle, a rain shield for a building under construction, etc., wherein a top cloth obtained by cutting a rubber-coated cloth into a predetermined shape. An inflatable roof characterized by being formed in a bag shape by opposing a peripheral edge portion of the lower fabric 3 and the lower fabric 4 which are less stretchable than the upper fabric. 2. The inflatable roof according to claim 1, wherein the upper cloth and the lower cloth have substantially the same shape. 3. The inflatable roof according to claim 1, wherein the actual area of the upper cloth is larger than the projected area, and the shape of the projection and the shape of the lower cloth are substantially the same.