JP4685810B2 - Air beam structure - Google Patents

Description

  The present invention relates to an air beam structure.

Air beam structures are known.
An air beam structure is a membrane structure having a plurality of bags in many cases, using a bag that is hermetic and capable of providing strength by filling a gas (in many cases, air) inside the air beam structure. It is a thing. In the present application, the term “beam” does not mean only the one that extends in the horizontal direction, but is used to mean the degree to increase the strength of the structure. For example, in the present application, the term “beam” includes not only beams and girders that are usually meant by the word “beam” but also columns extending in other directions such as the longitudinal direction.
Since the air beam structure uses a membrane material, in addition to being able to realize beautiful curves and curved surfaces, it has a feature that it can be easily constructed and removed compared to ordinary structures, such as school athletic festivals etc. It is applied to arches used for events, world pavilions, shelters for emergency disasters, etc.

A conventional air beam structure includes a main body membrane material for protecting the inside of the air beam structure from rain and wind, and a plurality of tubular bags for attaching the main body membrane material, which are separated from the main body membrane material. Has been. The tube-shaped bag has a certain strength when air is introduced into the bag, and functions as a frame of the air beam structure.
When a bag in a conventional air beam structure is bent, for example, in the case of an arch shape, a plurality of cylinders formed of a film material are connected to adjacent cylinders while being connected to each other. Since it is formed by connecting with an angle, the curved surface formed by the main body membrane material when the main body membrane material is fixed to the bag resonates with the squared part present in the bag, so the designer wants It may not be beautiful. Furthermore, since the main body membrane material and the bag are separate, when installing the air beam structure at the site of use, it is necessary to separately connect the bag containing the air (frame) and the main body membrane material. Even if it is urgent, such as when used in an emergency disaster, installation may take time.

  An object of the present invention is to eliminate such problems in the air beam structure. More specifically, the present invention provides a technique for facilitating the installation of the air beam structure while making the shape formed by the body film material of the air beam structure more beautiful than in the case of the conventional air beam structure. Let that be the issue.

The present invention for solving the above-described problems is roughly divided into the following first and second inventions.
1st invention is the main body film | membrane material formed with the film | membrane material, and the beam film | membrane material formed with the elongate film | membrane material, The both ends of the width direction are attached to the said main body film | membrane material, The said main body film | membrane An airtight closed space that maintains the shape of the main body film material in a predetermined shape while being filled with gas during use, and the main body film material or the beam film An air beam structure comprising: a valve that communicates with the closed space through a material, and that can fill the closed space with a gas or extract the gas from the closed space.
The air beam structure of the first invention is different from the conventional air beam structure in which the bag and the main body film material are separately provided, and the main film material and the beam film material attached thereto are provided with a closed space that functions as a beam. It is supposed to be formed by. That is, in the first invention, a part of the main body film material also serves as a part of the bag. Therefore, in this air beam structure, since the shape of the bag does not resonate with the main body film material, the curved surface formed by the main body film material becomes more beautiful than before. Further, the air beam structure is easy to install because the main body membrane material and the closed space (which has the function of the frame that the conventional bag has) are integrated.

Note that the closed space in the first invention may have any shape. For example, when it is assumed that each of the main body film material and the beam film material is flat, the cross-sectional shape of the closed space before filling the closed space with gas is a polygon such as a rectangle, or a bowl shape. However, a rectangular shape is particularly desirable. In addition, this cross-sectional shape means a shape when the closed space is not filled with gas. The cross-sectional shape after the gas is filled in the closed space is generally a nearly circular shape.
In the first invention, the beam film material forming one closed space may be a single material or may be made of a plurality of film materials. When the beam film material forming one closed space is a plurality of film materials, the beam film material includes a plurality of beam film material pieces along the longitudinal direction thereof, and among the beam film material pieces, The end portions in the width direction of adjacent ones are hermetically connected, and when the main body film material and the beam film material pieces are assumed to be flat, the closed space before filling the gas is filled The cross-sectional shape perpendicular to the longitudinal direction of the closed space may be a polygon corresponding to the number of the beam film material pieces.
In this case, the end portions in the width direction of adjacent ones of the beam film material pieces are partly bent (for example, bent) in a state where the end portions are bent toward the inner side of the closed space. May be joined on the entire surface). If it does in that way, when gas will be put in closed space, the joined part will become difficult to peel off.

The second invention of the present application is a main body film material formed of a film material and a beam film material formed of a long film material, and by attaching both ends in the width direction to the main body film material, An air-tight bag disposed between the main body film material and the space surrounded by the beam film material and the main body film material along the longitudinal direction of the beam film material. There is a state in which the main body membrane material is maintained in a predetermined shape while being filled with gas when in use, and communicated with the inside of the bag, and the bag is filled with gas, or An air beam structure comprising: a valve capable of extracting gas from the inside of the bag.
The air beam structure according to the second aspect of the present invention includes a bag. However, the bag is surrounded by the main body film material and the beam film material, and is disposed in a space integrated with the main body film material. That is, for example, by making the cross-sectional shape of the bag the same as or larger than the space, the bag of the air beam structure is integrated with the main body membrane material, although indirectly. Therefore, when compared with a conventional air beam structure, the curved surface formed by the main body film material can be made beautiful, and the installation of the air beam structure is easy. The space surrounded by the main body film material and the beam film material in the second invention has a role of determining the shape of the bag, and is not necessarily airtight unlike the closed space in the first invention. . Instead, in the second invention, the bag is airtight. But the above-mentioned space can also be made airtight by airtightly connecting both ends of the beam film material and the main body film material. In the second invention, the shape of the bag when air is introduced can be regulated from the outside by the shape of the space described above (more specifically, by the main body film material and the beam film material surrounding the space). It becomes possible. Therefore, in the second invention, the shape of the bag can be a linear shape such as a simple cylindrical shape. The fact that the shape of the bag can be such a simple shape leads to a reduction in the number of joints that should be airtight, leading to easier manufacture of the bag.

Note that the space in the second invention may have any shape. For example, the cross-sectional shape can be a polygonal shape such as a rectangle, or a shape that is a bowl shape.
In the second invention, the beam film material forming one space may be a single material or may be made of a plurality of film materials. In the case where the beam film material forming one space is a plurality of film materials, the beam film material includes a plurality of beam film material pieces along the longitudinal direction thereof, and among the beam film material pieces, The ends in the width direction of adjacent ones are connected to each other, and the longitudinal direction of the space before filling the bag with gas when it is assumed that the main body film material and the beam film material pieces are flat. The cross-sectional shape perpendicular to may be a polygon corresponding to the number of the beam film material pieces.
In addition, by connecting the main body film material in an airtight manner with the end portions in the width direction of adjacent ones of the beam film material pieces and the outer end portions of the beam film material pieces located at both ends. The above-mentioned space can be made airtight.
In addition, the end portions in the width direction of adjacent ones of the beam film material pieces are joined together, for example, on the entire surface of the bent portion in a state where the end portions are bent toward the inside of the space. Also good. If it does in that way, when gas will be put in the bag distribute | arranged in the above-mentioned space, the junction part becomes difficult to peel off.

The following contents are common to the first invention and the second invention.
Both end portions of the beam film material can be fixed to the main body film material, for example, on the entire surface of the folded portion in a state of being folded back toward the inside of the closed space or space, or toward the outside. The beam film material can be fixed to the main body film material in a state where one of both end portions of the beam film material is turned toward the inside of the closed space or space and the other is turned outward.
When the closed space in the first invention is filled with gas, or when the bag arranged in the space of the second invention is filled with gas, both ends of the beam film material are folded back in the direction away from the opposite end. If it is fixed to the main body film material in a state in which it is held, the beam film material tends to peel off from the main body film material. On the contrary, if both ends of the beam film material are folded back toward the opposite end, and fixed to the main body film material, the gas is introduced into the closed space in the first invention. When it is filled, or when the bag placed in the space of the second invention is filled with gas, the beam film material is difficult to peel off from the main body film material.
It should be noted that the entire ends of the folded end portions of the beam film material can be fixed to the main body film material. The beam film material and the main body film material may be fixed by an appropriate method such as welding, fusion, or adhesion.

In either case of the first invention or the second invention, the shape of the main membrane material is not particularly limited.
In either case of the first invention or the second invention, the main body film material is the sub-main body film material along the beam film material and the other main body film material that occupies most of the main body film material. The beam film material may be attached to the sub-main film material. If it does in this way, it will be easy to perform the operation | work which fixes a beam film | membrane material to a main body film | membrane material. In particular, if the sub-body film material is at least a planar film material at the time of manufacture, the beam film material is attached to the sub-body film material, and then the sub-body film material is attached to the main body film material. It is easy to fix the beam film material to the main body film material. When the main body film material comprises a main main body film material and a sub main body film material, the sub main body film material is in the shape of a band, and the predetermined excess portion is left at least at one end in the width direction, The beam film material may be connected to the sub-main body film material. By doing in this way, the sub-body film material can be connected to the main body film material at the surplus portion. This produces an effect of facilitating the attachment of the sub-body film material to the main body film material during the manufacture of the air beam structure, and consequently the effect of facilitating attachment of the beam film material to the body film material.
The main body film material is divided into a sub main body film material along the beam film material, and a main main body film material that is the other part and occupies most of the main body film material, and the beam film material, When attached to the sub-main body film material, the first invention assumes that each of the main body film material and the beam film material piece is flat by using three pieces of the beam film material pieces. The cross-sectional shape of the closed space before filling the closed space with a gas can be rectangular. In this case, the sub-main body film material is a strip-shaped rectangle, and the beam film material pieces having both ends in the width direction connected to other beam film material pieces are rectangular, and the beam film material pieces Among them, the one connected to the sub-main body film material at one end in the width direction can be formed into a belt-like substantially semicircular arc shape or a belt-like polygon. By doing so, the shape of the air beam structure of the first invention can be made into an arch shape having a substantially bowl-shaped cross section defined by a beam film material piece having a substantially semicircular arc shape without using any other member. In the present application, the term “substantially semicircular arc shape” includes not only a complete semicircular arc shape but also a semi-elliptical shape or the like. It is used in a sense including an arcuate shape.
The main body film material is divided into a sub main body film material along the beam film material, and a main main body film material that is the other part and occupies most of the main body film material, and the beam film material, When attached to the sub-main body film material, the second invention assumes that each of the main body film material and the beam film material piece is flat because the number of the beam film material pieces is three. The cross-sectional shape of the space before filling the bag with gas can be rectangular. In this case, the sub-main body film material is a strip-shaped rectangle, and the beam film material pieces having both ends in the width direction connected to other beam film material pieces are rectangular, and the beam film material pieces Among them, the one connected to the sub-main body film material at one end in the width direction can be formed into a belt-like substantially semicircular arc shape or a belt-like polygon. By doing so, the shape of the air beam structure of the second invention is not limited to any other member, but may be an arc shape or a belt-like polygon (this polygon is preferably substantially arc-shaped). An arch shape having a substantially bowl-shaped cross section defined by the film material piece. Each film material piece does not have to be completely formed of a single film material, and a plurality of film materials may be connected to form a substantially single film material.

Moreover, the air beam structure in the first invention and the second invention may further include a sheet that can be laid so as to cover a place where the air beam structure is installed.
In this case, a predetermined location on the lower surface of the main structure portion that is a portion of the air beam structure located on the sheet may be fixed to the sheet. With such an air beam structure, it is possible to fold and clean the air beam structure that has been degassed from the bag or the closed space after use, and is convenient. In addition, with such an air beam structure, the reproducibility of the shape of the main structure portion that is the center of the air beam structure can be improved.
The air beam structure having a seat is provided with a fixing means that can be detachably fixed to the seat at a predetermined position on the lower surface of the main structure portion that is a portion of the air beam structure positioned on the seat. It may be assumed that If it is an air beam structure provided with such a sheet | seat and fixing means, it is convenient for the cleaning up after use similarly to the above-mentioned air beam structure. In addition, by making the seat and the main structure detachable, the air beam structure can be easily handled. The fixing means can be fixed only at a predetermined position of the sheet. In this way, the reproducibility of the shape of the air beam structure can be improved.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a use state of an air beam structure 100 according to the present embodiment. 2 is a plan view of the air beam structure 100 shown in FIG. 1, FIG. 3 is a side view of the air beam structure 100, FIG. 4 is a front view of the air beam structure 100, and FIG. 2 is a cross-sectional view of a structure 100. FIG.

The air beam structure 100 is not necessarily limited thereto, but has a generally bowl shape as a whole. In this embodiment, the air beam structure 100 is sized so that a person can enter the space inside.
The air beam structure 100 includes a main body film material 110 and a beam portion 120 covering the whole.

Although not limited to this, the main body film material 110 is made using a tent sheet. The main body membrane material 110 connects a substantially semicircular front membrane material 111 that forms the front surface thereof, a substantially semicircular rear membrane material 112 that forms the rear surface thereof, and connects the front membrane material 111 and the rear membrane material 112. It has a shape, and is provided with an intermediate film material 113 that is rectangular when not in use (or expanded in the manufacturing process).
The front end portion of the intermediate film material 113 is connected over the entire length of the arc of the front film material 111 and the front film material 111, and the rear end portion of the intermediate film material 113 extends over the entire length of the arc of the rear film material 112 and the rear film material 112. It is connected. The connection between the middle film material 113 and the front film material 111 and between the middle film material 113 and the rear film material 112 are not necessarily airtight. The middle film material 113 and the front film material 111 and the middle film material 113 and the rear film material 112 may be connected in any manner, but in this embodiment, this is performed by welding.

The front membrane material 111 is provided with an entrance 111A that is an opening. The entrance 111A is rectangular in this embodiment. A rectangular entrance cover 111B covering the entrance 111A is disposed. The upper end of the entrance cover 111B is connected to the upper end of the entrance 111A. A person enters and exits the air beam structure 100 by turning the entrance cover 111B from below and passing through the entrance 111A.
The front film material 111 is also provided with a window 111C formed of a transparent film material.

On both side surfaces of the intermediate film material 113, windows 113A that are openings are provided. This window 113A is rectangular. A mesh-like film 113B is attached to the window 113A. The window 113A is provided with a rectangular window cover 113C that covers it. The method of attaching the window cover 113C to the window 113A is the same as the method of attaching the entrance cover 111B to the entrance 111A.
A loop 113D is provided around the middle film material 113. The loop 113D is for passing the auxiliary rod L which is a linear rod as shown in FIG. The loop 113D is formed by fixing both ends of a film material having a predetermined width to the surface of the intermediate film material 113 by, for example, fusion. Five sets of loops 113 </ b> D are attached at predetermined intervals in a direction along the arc of the intermediate film material 113, with one set attached to the front, middle, and rear of the intermediate film material 113. The auxiliary rod L is passed through a set of loops 113D. The auxiliary rod L passed through the loop 113D assists in maintaining the shape of the air beam structure 100.

  Since the main body film material 110 itself is not required to be airtight, it can be formed of a net-like or mesh-like film material except for a portion that creates a closed space described later.

In this embodiment, the number of beam units 120 is three. In this embodiment, the three beam portions 120 are respectively attached to the front, middle, and rear of the intermediate film material 113.
In this embodiment, the beam portion 120 has a substantially semicircular arch shape, and its cross-sectional shape is rectangular, more specifically, square, as shown in FIG. In this embodiment, the beam portion 120 is formed by joining both end portions of the beam membrane material 122 formed by connecting the membrane material pieces 120A, 120B, and 120C, which are three long and strip-like membrane materials, to the main body membrane material 110. Is formed. Of the three film material pieces 120A, 120B and 120C, the shape of the film material side 120B is rectangular, and the remaining two film material pieces 120A and 120C are substantially semicircular arcs. Adjacent sides of the film material piece 120A and the film material piece 120B are joined to each other by welding, fusion, or the like in a state where the film material piece 120A is folded inside the beam portion 120. Similarly, the adjacent sides of the film material piece 120C and the film material piece 120B are joined to each other by welding, fusion, or the like in a state where the film material piece 120C is folded inside the beam portion 120. In FIG. 6, the joint portion between the membrane material piece 120A and the membrane material piece 120B and the joint portion between the membrane material piece 120C and the membrane material piece 120B are both indicated by the symbol X. In addition, the sides of the film material piece 120A and the film material piece 120C that are not joined to the film material piece 120B (that is, both end portions of the beam film material 122) are bent in directions close to each other, and the bent portions. Are connected to the main body film material 110 by welding, fusion or the like. The space surrounded by the main body film material 110 and the beam film material 122 is airtight, and this is a closed space in the present invention. In order to make this closed space airtight, a film material having the same shape as the cross-sectional shape of the closed space is surrounded by the main body film material 110 and the beam film at both ends in the longitudinal direction of the beam portion 120 in this embodiment. It is arranged in a state where it is joined to the material 122 by welding, fusion or the like.
As described above, the cross section of the closed space is rectangular (more specifically, it is assumed that the main body film material 110 and the film material pieces 120A, 120B, 120C are all flat surfaces, and air enters the closed space. The cross-sectional shape when it is not formed is rectangular), but it is not necessary to keep the cross-sectional shape rectangular even when air is introduced therein. The beam portion 120 of this embodiment is illustrated as a square cross section in FIG. 1, but the cross section is substantially circular when air is introduced therein. However, in FIGS. 1 to 5, the cross-sectional shape of the beam portion 120 is shown as a rectangle for the sake of simplicity.
The beam unit 120 is provided with a valve 121 for taking gas (air in this embodiment) into and out of the closed space inside.
As the valve 121, any valve can be used as long as gas can be arbitrarily taken into and out of the closed space inside the beam portion 120 and can be kept airtight as necessary. Such a known valve is used as the valve 121 in this embodiment. The valve 121 can be connected to a predetermined pump or the like (not shown), and the pump or the like performs filling and exhausting of air into the beam unit 120. The tip of the valve 121 is exposed to the outside from the side surface of the intermediate film material 113. However, since the valve 121 only needs to communicate with the closed space, it may be provided on the beam film material 122.

As described above, in this embodiment, both end portions of the beam film material 122 are bent in directions close to each other (that is, in a direction corresponding to the inward direction of the closed space), and the main body film material 110 is in this state. Installed on. As a result, the beam film material 122 is unlikely to peel off from the main body film material 110 when air is introduced into the closed space.
In this embodiment, the adjacent sides of the film material pieces 120A, 120B, and 120C that form the beam film material 122 are joined in a state of being bent inside the closed space. Thereby, this joining portion is also less likely to be peeled off than when the membrane material pieces 120A, 120B, and 120C are joined outwardly.

The three beam portions 120 can be modified as shown in FIG.
The beam portion 120 shown in FIG. 7 is formed by a single beam film material 122. The closed space provided in the beam unit 120 is substantially bowl-shaped as shown in FIG. In the case where the beam part 120 is as shown in FIG. 7, in order to maintain the airtightness of the closed space, the film that is rectangular in the above-described embodiment provided at both ends in the longitudinal direction of the beam part 120 is used. The material has a bowl shape, similar to the cross-sectional shape of the closed space. The periphery of the bowl-shaped film material is bonded to the main body film material 110 and the beam film material 122 by welding, fusion, or the like.

Further, the beam section 120 can be as shown in FIGS.
The beam unit 120 shown in FIGS. 8 and 9 is basically configured in the same manner as the beam unit 120 described with reference to FIGS. 6 and 7. However, both of the beam portions 120 shown in FIGS. 8 and 9 have bags indicated by reference numeral 130 in the drawings. The bag 130 has a cylindrical shape and is formed airtight. The shape of the bag 130 is not necessarily a cylindrical shape, but it needs to be a columnar shape so that it can be arranged in the closed space shown in FIGS. For example, the cross section of the bag 130 may or may not correspond to the cross sectional shape of the beam portion 120. The bag 130 may have a circular cross section or a polygonal shape. The bag 130 of this embodiment is not necessarily limited to this, but the cross-sectional shape when the air is put in a state that is not restricted in the closed space is circular, and the bag 130 when the air is put into the bag 130. The cross-sectional area is made larger than the cross-sectional area of the closed space. Therefore, the bag 130 filled with air is pressed against the membrane material whose outer surface surrounds the closed space.
In addition, when using such a bag 130, the closed space does not necessarily need to be airtight. In this sense, the closed space in this case corresponds to the space in the present application. However, the closed space in this modification may be airtight as in the case described above.
When the closed space does not require airtightness, it is not necessary to pay much attention to the airtightness of the bonding between the film material pieces 120A, 120B, and 120C and the bonding between the beam film material 122 and the main body film material 110. Furthermore, in that case, the film material pieces 120A, 120B, and 120C may be made of a film material such as a mesh shape or a net shape.
Note that when the bag 130 is used, a valve similar to that used when the bag 130 is not used is necessary. The valve may be the same as that described above, as long as air can be taken in and out of the bag 130. The valve is provided at an appropriate place of the bag 130 so as to communicate with the inside of the bag 130.

Next, a method for using the air beam structure 100 will be described.
In using the air beam structure 100, the air beam structure 100 as described above is disposed at an appropriate place.
Next, a pump or the like is connected to the three valves 121 in order or at a time to fill the beam portion 120 with air. Thereby, when the beam part 120 does not have the bag 130, air is filled in the closed space, and when the beam part 120 has the bag 130, the bag 130 is filled with air. Thereby, the beam part 120 has a fixed hardness and has a function as a beam. The beam portion 120 maintains a semi-arc shape as shown in FIG. 1 and maintains the shape of the main body film material 110 fixed to the beam portion 120. In addition, even if there is no front film | membrane material 111 and the back film | membrane material 112, and there is no auxiliary | assistant stick | rod L, this shape is only the middle film | membrane material 113 and the beam film | membrane material 122 (if it exists, these and the bag 130) Only). But the front film | membrane material 111, the back film | membrane material 112, and the auxiliary | assistant stick | rod L contribute to the middle film | membrane material 113 maintaining the above-mentioned shape.
Next, the five auxiliary rods L are passed through five sets of loops 113D, one set of three.
In this way, the air beam structure 100 is completed.
The same applies to the following modifications, but it is also possible to pass the auxiliary rod L through the loop 113D before air is introduced into the beam section 120. If air is sent to the beam unit 120 after passing the auxiliary rod L through the loop 113D, the beam unit 120 can easily stand up, and thus the time required for installing the air beam structure 100 can be shortened.
When the air beam structure 100 is disassembled after use, basically, the reverse procedure to that described above may be performed.

<Modification 1>
The air beam structure 100 according to the first modification is basically configured in the same manner as the air beam structure 100 of the above-described embodiment, but is used together with the sheet S1 whose plan view is shown in FIG. Yes. The sheet S1 is laid under the air beam structure 100.
The sheet S1 is a film material and is not necessarily limited to this, but in the first modification, the sheet S1 is formed of the same material as the main body film material 110.
The sheet S1 also includes a plurality of fixing portions S11. The fixing portion S11 is for allowing the air beam structure 100 to be detachably fixed to the sheet S1, and in this embodiment, is constituted by Velcro tape. Each of the fixing portions S11 is circular, although not necessarily limited thereto. The fixing portion S11 is provided at a position corresponding to a portion where the lower surface of the beam portion 120 of the air beam structure 100 abuts when the air beam structure 100 is disposed on the sheet S1.
On the lower surfaces of both ends of the three beam portions 120 of the air beam structure 100 according to the first modification, there are provided fixing portions (not shown) formed of Velcro tape. The fixing portion of the beam portion 120 can be detachably fixed to the fixing portion S11 of the sheet S1.

Next, a method for using the air beam structure 100 according to the first modification will be described.
In using the air beam structure 100, first, the sheet S1 is laid on an appropriate portion where the air beam structure 100 is to be installed. Next, both end portions of the beam portion 120 of the air beam structure 100 are fixed on the sheet S1. As described above, the fixing is performed by pressing the fixing portion provided in the beam portion 120 against the fixing portion S11 of the sheet S1.
Next, a pump or the like is connected to the three valves 121 in order or at a time. When the beam unit 120 does not include the bag 130, it is in a closed space, and when the beam unit 120 includes the bag 130, Fill with air.
Next, the five auxiliary rods L are passed through five sets of loops 113D, one set of three.
In this way, the air beam structure 100 is completed.
When the air beam structure 100 is disassembled after use, basically, the reverse procedure to that described above may be performed. Although the sheet S1 is folded last, the fixing part provided in the beam part 120 and the fixing part S11 of the sheet S1 may be fixed as they are.
In the first modification described above, the fixing portion provided on the beam portion 120 and the fixing portion S11 of the sheet S1 are detachable. However, this may be a complete fixing that is not detachable. Such fixing may be appropriately performed by welding, fusing, adhesion, sewing, or the like.

<Modification 2>
The air beam structure 100 according to the second modification is basically configured in the same manner as the air beam structure 100 of the above-described embodiment.
The air beam structure 100 in Modification 2 is different from the air beam structure 100 in the above-described embodiment in the configuration of the intermediate film material 113.
The middle film material 113 of the air beam structure 100 according to the second modification is divided into a main middle film material 113a and a sub middle film material 113b. The sub-intermediate film material 113b is a portion to which the beam portion 120 of the air beam structure 100 is attached. The sub-intermediate film material 113b is a belt-shaped rectangular film material slightly wider than the beam portion 120, and is arranged in a direction along the arc of the intermediate film material 113 when the air beam structure 100 is used. ing. A portion of the intermediate film material 113 other than the sub-intermediate film material 113b is defined as a main intermediate film material 113a. That is, the main middle film material 113a is two rectangular film materials.
When the air beam structure 100 according to the second modification is manufactured, the beam portion 120 is first fixed to the sub-intermediate film material 113b that is spread in a planar shape. At this time, among the sub-intermediate film material 113b, those arranged from the center of the air beam structure 100 are provided with both ends of the beam film material 122 in the width direction in a form in which a surplus portion having a predetermined width is provided at both ends thereof. Parts are connected. At this time, with the both end portions of the beam film material 122 folded inward, the entire surface of the folded portion is fixed to the sub-intermediate film material 133B. Further, among the sub-intermediate film material 113b, those arranged at the front end and the rear end of the air beam structure 100 are provided with an extra portion having a predetermined width at one end thereof, and the width of the beam film material 122 is provided. Both ends of the direction are connected. At this time, with the both end portions of the beam film material 122 folded inward, the entire surface of the folded portion is fixed to the sub-intermediate film material 133B.
After the three sub-intermediate members 113b are fixed to the beam portion 120 as described above, three sub-intermediate members 113b arranged in parallel are arranged on the outer sub-intermediate members on both sides thereof. The end of 113b is connected through the entire length of two opposing sides of the rectangular main intermediate film 113a, and the outer end of the outer sub-intermediate film 113b is connected to the arc of the front film 111 adjacent thereto. Or the arc portion of the rear membrane material 112. At this time, the sub-intermediate film material 113b is connected to the main intermediate film material 113a by welding or fusing the entire surplus portion to the main intermediate film material 113a.
FIG. 11 shows a partial cross-sectional view of the air beam structure 100 according to the second modification made as described above.

The perspective view which shows the use condition of the air beam structure by 1st Embodiment of this invention. The top view of the air beam structure shown in FIG. The side view of the air beam structure shown in FIG. The front view of the air beam structure shown in FIG. Sectional drawing of the air beam structure shown in FIG. Sectional drawing in the cross section perpendicular | vertical to the longitudinal direction of the beam part which shows the structure of the beam part of the state which has not put air of the air beam structure shown in FIG. Sectional drawing in the cross section perpendicular | vertical to the longitudinal direction of the beam part which shows the structure of the beam part by the modification of the state which does not put air of the air beam structure shown in FIG. Sectional drawing in the cross section perpendicular | vertical to the longitudinal direction of the beam part which shows the structure of the beam part by the other modification of the state which has not put air of the air beam structure shown in FIG. Sectional drawing in the cross section perpendicular | vertical to the longitudinal direction of the beam part which shows the structure of the beam part by the other modification of the state which has not put air of the air beam structure shown in FIG. The top view which shows the structure of the sheet | seat used with the air beam structure by the modification 1. FIG. The partial cross section figure which shows the structure of the state which has not put air into the beam part of the air beam structure by the modification 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Air beam structure 110 Main body film | membrane material 113 Middle film | membrane material 120 Beam part 121 Valve | bulb 122 Beam film | membrane material 130 Bag S1 Sheet S11 Fixing part

Claims (11)

A main body membrane material formed of a membrane material;
It is a beam film material formed of a long film material, and by attaching both ends in the width direction to the main body film material, it can be filled with gas between the main body film material during use. Maintaining an airtight closed space in which the shape of the main body membrane material is maintained in a predetermined shape,
A valve that communicates with the closed space via the main body film material or the beam film material, fills the closed space with gas, or allows the gas to be removed from the closed space;
A Eabimu structure formed comprises a,
The beam film material includes a plurality of beam film material pieces along the longitudinal direction thereof, and ends in the width direction of adjacent ones of the beam film material pieces are hermetically connected.
When it is assumed that each of the main body film material and the beam film material piece is flat, a cross-sectional shape perpendicular to the longitudinal direction of the closed space before filling the gas in the closed space is as follows. It becomes a polygon according to the number,
Air beam structure . A main body membrane material formed of a membrane material;
It is a beam film material formed of a long film material, and is formed with a space between the main body film material by attaching both end portions in the width direction to the main body film material,
It is an airtight bag arranged along the longitudinal direction of the beam film material in the space surrounded by the beam film material and the main body film material, and is filled with gas during use And maintaining the shape of the main body membrane material in a predetermined shape,
A valve that communicates with the inside of the bag, fills the inside of the bag with gas, or allows the gas to be withdrawn from the inside of the bag;
An air beam structure comprising: The beam film material includes a plurality of beam film material pieces along the longitudinal direction thereof, and ends in the width direction of adjacent ones of the beam film material pieces are connected to each other,
When it is assumed that each of the main body film material and the beam film material piece is flat, the cross-sectional shape perpendicular to the longitudinal direction of the space before filling the bag with gas is the number of the beam film material pieces. It becomes a corresponding polygon,
The air beam structure according to claim 2 . Both ends of the beam film material are fixed to the main body film material in a state of being folded back in a direction approaching the opposite end.
The air beam structure according to any one of claims 1 to 3 . The end portions in the width direction of adjacent ones of the beam film material pieces, and the outer end portions of the beam film material pieces that are located at both ends of the beam film material pieces and the main body film material are hermetically connected.
The air beam structure according to claim 1 or 3 . The main body film material is divided into a sub main body film material along the beam film material, and a main main body film material that is the other part and occupies most of the main body film material,
The beam film material is attached to the sub-main body film material,
The air beam structure according to claim 1 or 2 . The main body film material is divided into a sub main body film material along the beam film material, and a main main body film material that is the other part and occupies most of the main body film material,
The beam film material is attached to the sub-main body film material,
And the said closed space before filling the said closed space with gas when it is assumed that each of the said main body film | membrane material and the said beam film | membrane material piece is flat by making the said beam film | membrane material piece into three sheets. The sub-body film material is a band-shaped rectangle, and the beam film material pieces having both ends in the width direction connected to other beam film material pieces are rectangular in shape. The beam film material piece is connected to the sub-main body film material at one end in the width direction of the beam film material piece, and has a substantially semicircular arc shape in a band shape.
The air beam structure according to claim 1 . The main body film material is divided into a sub main body film material along the beam film material, and a main main body film material that is the other part and occupies most of the main body film material,
The beam film material is attached to the sub-main body film material,
And the cross section of the space before filling the bag with gas when it is assumed that each of the main body film material and the beam film material piece is flat because the number of the beam film material pieces is three. The shape is rectangular, the sub-main body film material is a band-shaped rectangle, and the beam film material pieces whose both ends in the width direction are connected to other beam film material pieces are rectangular. In the beam film material piece, one whose width direction one end is connected to the sub-main body film material is a belt-like substantially semicircular arc shape,
The air beam structure according to claim 3 . The sub-main body film material is formed in a strip shape, and the beam film material is connected to the sub-main body film material so as to leave a predetermined surplus portion at least at one end in the width direction thereof.
And the sub body film material is connected to the main body film material at the surplus part,
The air beam structure according to claim 6 . Further comprising a sheet that can be laid to cover a place where the air beam structure is installed,
A predetermined place on the lower surface of the main structure portion which is a portion of the air beam structure located on the sheet is fixed to the sheet;
The air beam structure according to claim 1 or 2 . Further comprising a sheet that can be laid to cover a place where the air beam structure is installed,
Fixing means that can be detachably fixed to the sheet is provided at a predetermined position on the lower surface of the main structure part that is a part of the air beam structure that is positioned on the sheet;
The air beam structure according to claim 1 or 2 .

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