JP7165034B2 - Coupling for inflation bag, and inflation bag coupled by coupling - Google Patents

Description

TECHNICAL FIELD The present invention relates to a connecting device for connecting a plurality of inflatable bags to be inflated by inflating a filler such as water or cement, and to a connecting device for inflatable bags connected by the connecting device. . In particular, a plurality of inflatable bags that are inflated by injecting a filler such as water or cement into gaps such as between civil engineering structures and gaps between civil engineering structures and the ground are stacked and installed. It is characterized in that the inflatable bags can be maintained in a state of being appropriately overlapped with each other so that the overlapping positions of the inflated inflatable bags do not shift.

Conventionally, as shown in Patent Document 1, an inflatable bag that is inflated by injecting a filler such as water or cement is placed in a gap such as a gap between civil engineering structures or a gap between a civil engineering structure and the ground. A filler such as water or cement is injected into the expansion bag to expand the expansion bag and use it as a filling material for the gap. As described above, a tube for injecting air is housed in an outer bag, and this is inserted into the above-mentioned gap to inflate the tube by injecting air into the tube, which is used as an air jack. It is

Here, due to reasons such as the civil engineering structure being unable to be installed at a predetermined position, the above-mentioned gap may become larger than expected. There is a limit to the amount of expansion that can be achieved simply by injecting the filler material and causing it to expand.

In such a case, conventionally, a new expansion bag, wood, or the like is prepared as a filling material, and these are stuffed into the gaps that could not be filled sufficiently with one expansion bag. was responding.

However, it is necessary to check the gaps that could not be filled sufficiently, prepare a new filling material corresponding to the gaps, and fill the gaps with the new filling material, which lengthens the construction period. There was a problem.

In addition, in order to be able to deal with large gaps such as between civil engineering structures, it is conceivable to prepare an inflatable bag having a large size in advance. In addition, even if the expansion bag can be installed in the gap, a filler such as mortar is injected into the excess portion of the large expansion bag, which increases costs. There were problems such as leading to

In addition, when the gap between the civil engineering structures or the gap between the civil engineering structure and the ground is large, it is conceivable to use two or more inflatable bags stacked vertically, but the filling material is injected into the inflatable bag. Since the cross-sectional shape of the inflated expansion bag becomes elliptical, the mutual stability of the expansion bags becomes extremely poor when the inflated expansion bags are stacked. When two inflatable bags are superimposed and placed in the gap as described above, and each inflatable bag is inflated by injecting a filler, the cross-sectional shape of each inflatable bag becomes elliptical and overlaps. The problem is that the two inflatable bags in the folded state slide sideways, and the state in which the inflatable bags overlap each other collapses, the desired inflated height cannot be obtained, and the above-mentioned gap cannot be sufficiently filled. was there.

JP-A-2001-295598 Registered Utility Model No. 3026155

In the present invention, a plurality of inflatable bags that are inflated by injecting a filling material such as water or cement into gaps such as gaps between civil engineering structures and gaps between civil engineering structures and the ground are stacked and installed. It is an object of the present invention to keep the inflatable bags appropriately overlapped with each other so that the overlapping positions of the inflated inflatable bags do not shift.

In order to solve the above-described problems, the connector of the inflation bag according to the present invention connects a plurality of inflation bags to be inflated by injecting a filler so as to overlap each other. A plurality of tubular portions are arranged so as to overlap in one direction to hold an inflatable bag into which material is injected and inflated, and to hold the inflated bag. , the connector of the expansion bag provided with a connecting portion for connecting the tubular portions with a required width along the axial direction of the tubular portion is insertable and holds the expansion bag after expansion. A plurality of large-diameter tubular portions for holding the tubular portion are arranged so as to overlap in one direction, and a large-diameter portion having a required width is formed in the overlapping portion of the large-diameter tubular portions along the axial direction. A connecting portion is provided for connecting the tubular portions of each other .

Here, in such a connector for the expansion bag, a connecting portion for connecting the tubular portions with a required width along the axial direction of the tubular portions is provided at the portion where the tubular portions overlap each other as described above. When an expansion bag is inserted into each of the tubular portions and the filling material is injected into each expansion bag to inflate the expansion bag, the outer peripheral surface of the expanded expansion bag in each tubular portion is different from each other. The inflatable bags are integrated by being brought into close contact with the inner peripheral surfaces of the tubular portions, and the inflatable bags that are inflated in the respective tubular portions are kept flat by the connecting portion that connects the tubular portions with a required width. They come into contact with each other, thereby suppressing mutual displacement of the inflated bladders in the tubular portions.
In addition, when holding an expansion bag that is long in the axial direction, each tubular portion is also elongated in the axial direction, so that the long expansion bag is inserted into each tubular portion to fill the expansion bag. When the inflation bag is inflated by injecting the material, the inflated inflation bag is prevented from shifting its position in the axial direction within each cylindrical portion.
In addition, when holding an expansion bag that is long in the axial direction, it is also possible to use a plurality of couplings having cylindrical portions with a required width in the length direction of the expansion bag, and to provide them at required intervals. .

In such a connector for an expansion bag, when a plurality of tubular portions are arranged so as to overlap in one direction, for example, in the vertical direction, the number of tubular portions is not particularly limited as long as it is two or more. A large number of cylindrical parts can be arranged so as to overlap in the vertical direction.

In addition, in the expansion bag connecting device according to the present invention, a large-diameter cylindrical portion into which the expansion bag connecting device can be inserted and which holds the tubular portion holding the inflated expansion bag is provided. A plurality of cylindrical portions are arranged so as to overlap in one direction, and a connecting portion for connecting the large-diameter cylindrical portions with a required width along the axial direction to the portion where the large-diameter cylindrical portions overlap each other. was set up .

In this way, the connector for the inflation bag, which connects the plurality of inflation bags to be inflated by injecting the filling material so as to overlap each other, is inserted into the large-diameter tubular portion, and the large-diameter tubular portion is inserted into the large-diameter tubular portion. By connecting the shaped members to each other by the connecting portion, it becomes possible to stably connect the cylindrical portions of the connecting member of the expansion bag so that more cylindrical portions are overlapped in one direction.
Further, in the connecting member of the expansion bag, a deformation preventing member made of a hard material can be provided at the connecting portion that connects the cylindrical portions with a required width along the axial direction of the cylindrical portions. .

In addition, in the connecting device for inflation bags according to the present invention, the connecting device for inflation bags for connecting a plurality of inflation bags to be inflated by injecting a filling material so as to overlap each other, in which the filling material is injected and inflated. A plurality of cylindrical portions for holding the inflated expansion bag are arranged so as to overlap in one direction, and the portion where the cylindrical portions overlap each other is provided in the axial direction of the tubular portion. A connecting portion for connecting the cylindrical portions with a required width is provided along the .theta . By doing so, the inflatable bag bodies inflated in the respective cylindrical portions are brought into contact with each other in a flat state more reliably by the deformation preventing material provided at the connection portion connecting the cylindrical portions with the required width. As a result, it is further suppressed that the inflated bladders are displaced from each other in each tubular portion.

Further, in the coupling device for the inflation bag according to the present invention, one axial end side of the tubular portion may be closed, and the tubular portion may be formed into a bag shape with the other end open. With this configuration, when one end side of the tubular portion in the axial direction is located on the lower side in the vertical direction, or when the expansion bag body in the tubular portion is arranged in a structure that is out of reach, for example, the expansion bag inside the tubular portion is positioned at the lower side in the vertical direction. It is possible to suppress the slipping out from the one end side in the axial direction of the .

Further, when one end side of the cylindrical portion in the axial direction is closed as described above, after inserting the expansion bag body from the other end side of the axial direction of the cylindrical portion, the axial direction of the cylindrical portion is closed. It is also possible to close the other end with a surface-joining fastener or the like.

Then, in the expansion bag connected by the connector of the present invention, the expansion bag is inserted into each cylindrical portion of the above-described connection device of the expansion bag.

In the connecting device for the inflation bag according to the present invention, each tube is provided with a connecting portion for connecting the tubular portions with a required width along the axial direction of the tubular portions at the portion where the tubular portions overlap each other as described above. Since the inflatable bags are inserted into the tubular portions, when the inflatable bags are inflated by injecting the filling material into the inflatable bags in this state, the inflatable bags in the tubular portions will be inflated. The expansion of the outer peripheral surface is held in close contact with the inner peripheral surface of each cylindrical portion, and the expanded bag bodies inflated in each cylindrical portion connect the cylindrical portions with a required width. The connected portions come into contact with each other in a flat state, thereby suppressing mutual displacement of the inflated bladders in the tubular portions.

As a result, when an expansion bag is inserted into each cylindrical portion of the expansion bag connector of the present invention and a filler is injected into each expansion bag to inflate each expansion bag, civil engineering works can be performed. A plurality of inflatable bags that are inflated by injecting filler material into gaps such as gaps between structures and gaps between civil engineering structures and the ground are installed so as to overlap each other. is injected and inflated, the inflated bag bodies are not displaced by the connecting member of the inflatable bag body, and the inflatable bag bodies are maintained in a state in which they are appropriately overlapped and connected to each other. As described above, the gap can be easily and appropriately filled for any size gap.

Further, in the present invention, unlike the conventional case using a large expansion bag, the surplus portion of the large expansion bag is filled with a filler such as mortar, which increases the cost. To reduce costs and to sufficiently fill the gap by installing the expansion bag without protruding even in a place where the space of the gap for installing the expansion bag is limited. Become.

1 shows a connector for an expansion bag according to a first embodiment of the present invention, in which (A) two cylindrical portions are arranged in a double cylindrical shape on the inner peripheral side and the outer peripheral side, and along the axial direction Schematic partial explanatory view showing a state in which tubular portions are sewn together to a required width to form a connecting portion having a space that is not sewn in the center, (B) is a connecting portion 2 provided along the axial direction. In a state in which the two cylindrical portions are connected by the connecting portion so as to overlap in the vertical direction by reversing the cylindrical portion on the outer peripheral side, the unsewn space in the center of the connecting portion 1 is a schematic partial explanatory view showing a state in which a deformation preventing material made of a resin plate is inserted into. In the expansion bag connector according to the first embodiment, (A) shows a state in which the expansion bags are inserted into the two tubular portions connected by the connecting portion so as to overlap in the vertical direction. and (B) is a schematic explanatory view showing a state in which a filler is injected into each expansion bag inserted into two cylindrical portions. FIG. 4 is a schematic partial explanatory view of an expansion bag to be inserted into the tubular portion in the expansion bag connector according to the first embodiment; In the connector for the inflation bag according to the first embodiment, one end side of each of the two cylindrical portions is closed by sewing, while the other end side of each of the two cylindrical portions is attached with a surface-joining fastener. FIG. 10 is a schematic explanatory view showing a state in which the other end side of each of the two tubular portions is openable and closable. 2A shows a connector for an expansion bag according to a second embodiment of the present invention, in which (A) shows two tubular parts on the inner peripheral side arranged in the tubular part on the outer peripheral side, and the inner peripheral side located on the upper side; contact the upper inner peripheral surface of the outer peripheral cylindrical portion, and sew the tubular portions to each other along the axial direction with a required width to form a connection portion, and the inner side located on the lower side Schematic showing a state in which the tubular portion on the peripheral side is brought into contact with the inner peripheral surface of the lower side of the tubular portion on the outer peripheral side, and the tubular portions are sewn to each other with a required width along the axial direction to form a connecting portion. Partial explanatory view, (B) shows three cylindrical parts connected by connecting parts along the axial direction, with the cylindrical part on the outer peripheral side being inverted, and two cylindrical parts on the inner peripheral side being placed above and below the cylindrical part on the outer peripheral side. FIG. 4 is a schematic partial explanatory view showing a state in which a deformation preventing member made of a resin plate is inserted into a gap between the two connecting portions in a state where the two cylindrical portions are connected so as to overlap each other; In the expansion bag connecting device according to the second embodiment, the state in which the expansion bag is inserted into each of the three tubular portions is shown. A schematic explanatory diagram showing a state in which an expansion bag is inserted and installed in a gap between the structure and the ground, (B) is each expansion inserted into the two cylindrical parts to be moved below Schematic explanatory view showing a state in which a filling material is injected into the bag body and each expansion bag body in the two cylindrical parts is inflated, (C) is inserted into the two cylindrical parts to be moved below. In the state where each expansion bag is inflated, the filling material is injected into the expansion bag inserted into the remaining one cylindrical portion located above to expand, and pressure is applied in the gap between the structure and the ground. is a schematic explanatory diagram showing a state in which both are held so as to be spread apart. Fig. 3 shows an expansion bag connector according to a third embodiment of the present invention, in which two large-diameter cylindrical portions into which the expansion bag connector of the first embodiment is inserted are vertically overlapped. In the portion where the large-diameter tubular portions overlap each other, a connecting portion for connecting the large-diameter tubular portions with a required width along the axial direction is provided, and the two large-diameter tubular portions are provided. FIG. 10 is a schematic explanatory view showing a state in which the couplings of the inflation bag according to the first embodiment are inserted into the respective shaped portions; 4A shows a connector for an expansion bag according to a fourth embodiment of the present invention, in which (A) two tubular portions are arranged in a double tube on the inner peripheral side and the outer peripheral side, and are arranged upward along the axial direction. A thin resin sheet having a required width is placed on the cylindrical portion located at , and a plurality of resin plates having a required width are placed on the resin sheet with the required spacing in the axial direction. A schematic partial explanatory view showing a state in which a deformation preventing material is arranged and two cylindrical parts are connected together with the deformation preventing material by a connecting member such as a bolt to provide a connecting part along the axial direction. , (B) are two cylindrical portions provided with connecting portions along the axial direction as described above, the cylindrical portion on the outer peripheral side is inverted, and the two cylindrical portions are vertically connected by the connecting portion. 1 is a schematic partial explanatory view showing a state in which they are connected so as to overlap with each other; FIG. In the connector for the inflation bag according to the fifth embodiment of the present invention, (A) is two cylindrical portions having a short axial length, which are superimposed one on top of the other and joined with a required width. (B) is a schematic perspective view showing a state in which the two tubular portions are provided in the longitudinal direction of the expansion bag with a required interval therebetween. FIG. 4 is a schematic explanatory view showing a state in which an expansion bag is inserted into each expansion bag and a filler is injected into each expansion bag and expanded.

Hereinafter, a connector for an inflatable bag according to an embodiment of the present invention and an inflatable bag connected by the connector will be described in detail with reference to the accompanying drawings. It should be noted that the connector of the expansion bag and the expansion bag connected by the connector according to the present invention are not limited to those shown in the following embodiments, and may be changed as appropriate without changing the gist of the invention. It can be implemented.

(First embodiment)
As shown in FIG. 1(A), in the connecting device for the inflation bag according to the first embodiment, two cylindrical portions 10, 10 are arranged in a double cylindrical shape on the inner peripheral side and the outer peripheral side. Two cylindrical parts 10, 10 formed in a double cylindrical shape are sewn together along the axial direction with a required width interposed therebetween to form a connecting part having a required width and having an unsewn space part 11a in the center. 11 was formed.

Next, the two cylindrical portions 10, 10 formed into a double cylindrical shape with the connection portion 11 formed as described above are turned over to form the two cylindrical portions 10, 10 as shown in FIG. are connected by the connecting portion 11 so as to overlap in the vertical direction, a deformation preventing member 12 made of a resin plate 12a is inserted into the space portion 11a in the central portion of the connecting portion 11. A rigid vinyl chloride resin plate having a thickness of 2 to 5 mm, for example, is suitable for the resin plate 12a. Further, the deformation preventing member 12 is not limited to a resin plate, and a material having higher rigidity such as a metal plate or wood can be used.

In the connecting member of the expansion bag in this embodiment, the two cylindrical portions 10, 10 are connected by the connecting portion 11 so as to overlap each other in the vertical direction as described above, and the connecting portion 11 is connected. With the deformation prevention member 12 made of the resin plate 12a inserted into the space 11a at the center, as shown in FIG. , and then, as shown in FIG. 2B, the filling material X was injected into each of the expansion bags 20, 20 to inflate the expansion bags 20, 20 respectively. As shown in FIG. 3, the expansion bag 20 into which the filling material X is injected by being inserted into the cylindrical portions 10, 10 is constructed of a sealed bag that prevents the filling material from leaking out. A filling mouthpiece 21 for injecting the filling material X into the expansion bag 20 is used.

Here, when the filling material X is injected into each of the expansion bag bodies 20, 20 inserted into each of the cylindrical portions 10, 10 as described above, the filling material X is expanded within each of the cylindrical portions 10, 10. The inflatable bags 20, 20 come into contact with each other in a flat state at the portion of the connecting portion 11 into which the deformation preventing material 12 is inserted as described above, and are inflated within the tubular portions 10, 10. Each expansion bag 20, 20 is maintained in a stable state. In order to stably maintain the inflatable bags 20, 20 inflated inside the tubular portions 10, 10 in an overlapping state, the tubular portion 10 should be It is preferable that the width of the connecting portion 11 is about 15 to 35% of the length. If it is less than 15%, stability cannot be maintained, and the overlapping state of the expansion bags 20, 20 tends to collapse. On the other hand, if it exceeds 35%, it becomes difficult to obtain the desired expansion diameter of the expansion bags 20, 20, which is not preferable.

Further, in this embodiment, in a state in which the cylindrical portions 10, 10 are connected by the connecting portion 11 so as to overlap in the vertical direction, a deformation preventing resin plate 12a is formed in the space portion 11a in the central portion of the connecting portion 11. Although the material 12 is inserted, the tubular portions 10, 10 can be secured by the tubular portions 10, 10 by strongly sewing the entire coupling portions 11 of the tubular portions 10, 10 or by bonding them with a strong adhesive. If they can be strongly joined together so as not to be deformed, there is no need to provide the space 11a in the central portion of the connecting portion 11 and insert the deformation preventing material 12 made of the resin plate 12a as described above.

Further, in this embodiment, as described above, the expansion bags 20, 20 are inserted into the tubular portions 10, 10, and the filling material X is injected into the expansion bags 20, 20, respectively. , when inflating the expansion bags 20, 20 in the tubular portions 10, 10, the axial positions of the expansion bags 20, 20 provided so as to overlap in the tubular portions 10, 10 are In order to prevent the inflatable bags 20, 20 from slipping out of the tubular portions 10, 10, as shown in FIG. While providing the closing parts 13, 13 that are closed, the other ends of the tubular parts 10, 10 are provided with surface-joining fasteners 14, 14, so that the other ends of the tubular parts 10, 10 can be opened and closed. can be

(Second embodiment)
As shown in FIG. 5(A), in the connecting device of the inflation bag in the second embodiment, the tubular portions 10 are arranged at upper and lower positions on the inner peripheral side of the tubular portion 10 on the outer peripheral side, respectively. , 10 are arranged, and the upper inner peripheral cylindrical portion 10 is brought into contact with the upper inner peripheral surface of the outer peripheral cylindrical portion 10, and in this state, the upper inner peripheral cylindrical portion 10 is placed. The portion 10 and the tubular portion 10 on the outer peripheral side are sewn together along the axial direction so as to have a required width therebetween to form a connecting portion 11 having a required width and a space portion 11a that is not sewn in the center, The lower inner peripheral cylindrical portion 10 is brought into contact with the lower inner peripheral surface of the outer peripheral cylindrical portion 10, and in this state, the lower inner peripheral cylindrical portion 10 and the lower inner peripheral cylindrical portion 10 are brought into contact with each other. A connecting part 11 of a required width having a space part 11a which is not sewn in the center is formed by sewing together with a tubular part 10 on the outer peripheral side so as to pass the required width along the axial direction.

Next, the three cylindrical portions 10, 10, 10 connected by the respective connecting portions 11, 11 along the axial direction are reversed so that only the outer cylindrical portion is turned upside down, and the outer cylindrical portion is turned upside down. A resin plate 12a is placed in the space portions 11a, 11a in the central portions of the two connecting portions 11, 11 in a state in which the two cylindrical portions 10, 10 on the inner peripheral side are overlapped and connected to the upper and lower sides of the connecting portion 10. , 12a are inserted.

Also in the connecting device of the expansion bag in this embodiment, the expansion bag is placed in each of the three tubular portions 10, 10, 10 connected by the connecting portions 11, 11 so as to overlap in the vertical direction as described above. 20, 20, 20 are inserted, and the filling material X is injected into each of the expansion bags 20, 20, 20 thus inserted, so that each expansion bag 20, 20, 20 is inflated. .

Next, using the connector of the inflatable bag in this embodiment, pressure is applied between the structure Y1 and the ground Y2 in the gap S between the structure Y1 and the ground Y2 so as to expand the two. 6(A) to 6(C), a description will be given of the case where the

First, as shown in FIG. 6(A), the expansion bags 20, 20, 20 are inserted into the three cylindrical portions 10, 10, 10 connected so as to overlap each other in the vertical direction, thereby forming the structure Y1. and the ground Y2. Next, as shown in FIG. 6(B), the filling material X is injected into each of the inflation bags 20, 20 inserted into the two cylindrical portions 10, 10 to be moved downward, thereby forming two After inflating the inflation bags 20, 20 in the cylindrical portions 10, 10, the inflation bag inserted into the remaining one upper cylindrical portion 10 as shown in FIG. 6(C). The filling material X is injected into the body 20 and expanded, and pressure is applied between the structure Y1 and the ground Y2 so that the gap S between the structure Y1 and the ground Y2 is widened and held. to In this way, in the gap S between the structure Y1 and the ground Y2, the filling material X is inserted into each of the expansion bags 20, 20, 20 inserted into the three tubular portions 10, 10, 10. When injected and inflated, the expansion bags 20, 20, 20 are fixed in an overlapping state by the reaction force between the structure Y1 and the ground Y2, and the three tubular portions 10, 10, 10 are fixed. The inflatable bags 20, 20, 20 inserted into the ground are kept properly overlapped, and pressure can be applied between the structure Y1 and the ground Y2.

(Third embodiment)
As shown in FIG. 7, in the connecting device of the inflation bag in the third embodiment, two cylindrical portions 10, 10 are vertically connected by a connecting portion 11 as shown in the first embodiment. Using two connecting devices of the expansion bag connected so as to overlap each other, each connecting device of the expansion bag in the first embodiment is inserted into the two large-diameter cylindrical portions 100, 100, respectively. The two large-diameter tubular portions 100, 100 are arranged so as to overlap each other in the vertical direction, and a connecting portion 110 for connecting the large-diameter tubular portions with a required width along the axial direction is provided at the overlapping portion of the large-diameter tubular portions 100, 100. are provided.

Then, in the connecting device for the inflation bag in this embodiment, the two connecting devices for the inflation bag shown in the first embodiment are inserted into the large-diameter cylindrical portions 100, 100, respectively. After that, although not shown, the expansion bags 20, 20, 20 are inserted into the four tubular portions 10, 10, 10, 10 of the two expansion bag connectors shown in the first embodiment. 20, 20, 20 are inserted, and the filling material X is injected into each of the expansion bags 20, 20, 20, 20 inserted in this way, and each expansion bag 20, 20, 20, 20 is expanded. let them

In this case, in the two inflatable bag couplings shown in the first embodiment, the inflatable bag bodies 20, 20 inflated in the tubular portions 10, 10 as described above, respectively. , 20, 20 come into contact with each other in a flat state at the portions of the connecting portions 11, 11 into which the deformation preventing members 12, 12 are inserted, as described above, and the cylindrical portions 10, 10 expand. The two expansion bags 20, 20, 20, 20 are maintained in a stable state, and the two large-diameter cylindrical portions 100, 100 into which the couplers of the two expansion bags are inserted are also Two inflatable bags are inserted into the two large-diameter cylindrical portions 100, 100 in flat contact with the portion where they overlap by a connecting portion 110 provided with a required width along the axial direction. The connector is also maintained in a stable state, and the overlap of the inflated bags 20, 20, 20, 20 in the four tubular portions 10, 10, 10, 10 is prevented from being displaced. suppressed and maintained in a stable state.

(Fourth embodiment)
In the expansion bag connecting member according to the fourth embodiment, the two cylindrical portions 10, 10 are vertically overlapped with each other, unlike the expansion bag connecting member shown in the first embodiment. Only the connection part 11 to be connected was changed, and other than that, the configuration was the same as that of the connection member of the expansion bag shown in the first embodiment.

Here, as shown in FIG. 8(A), in the connecting device for the inflation bag in this embodiment, the two tubular portions 10, 10 are arranged in a double tube on the inner peripheral side and the outer peripheral side. In providing the connecting portion 11 for connecting the two cylindrical portions 10, 10 which are formed into a double cylindrical shape so as to overlap each other in the vertical direction, on the upper cylindrical portion 10 which is formed into a double cylindrical shape, , a thin resin sheet 12b having a required width is arranged along the axial direction thereof, and a plurality of resin plates 12c having a required width are arranged on the resin sheet 12b so as to be spaced apart from each other in the axial direction. and the two cylindrical portions 10, 10 are vertically overlapped together with the deformation preventing member 12 consisting of the resin sheet 12b and the resin plate 12c by connecting members 11b such as bolts. were connected as follows. The thin resin sheet 12b is rigid enough to stand on its own, but flexible enough not to interfere with the turning over operation when the two connected cylindrical portions are turned over. For example, a rigid thin sheet such as a rigid polypropylene sheet having a thickness of 0.1 to 0.2 mm is suitable.

Next, the two cylindrical portions 10, 10 having the double cylindrical shape as described above are vertically overlapped with each other and connected by the connecting portion 11 using the connecting member 11b. As shown in B), the two tubular portions 10, 10 formed into a double tubular shape are inverted, and the two tubular portions 10, 10 are connected by the connecting portion 11 so as to overlap in the vertical direction. 2, a deformation preventing member 12 is provided on the resin sheet 12b with a predetermined interval in the axial direction and has a predetermined width. The two tubular portions 10, 10 were connected by the connecting portion 11 so as to overlap each other in the vertical direction so as to be positioned on the surface side.

After that, although not shown, the inflation bags 20, 20 are inserted into the tubular portions 10, 10, respectively, in the same manner as the coupling device for the inflation bags in the first embodiment. A filling material X is injected into each of the inflation bags 20, 20 to inflate each of the inflation bags 20, 20. - 特許庁In addition, in the expansion bag connector of this embodiment as well, the expansion bags 20, 20 inflated in the tubular portions 10, 10 are axially mounted on the resin sheet 12b as described above. Due to the deformation prevention member 12 provided with a plurality of resin plates 12c having a required width with a required spacing therebetween, the connecting portion 11 portion comes into contact in a flat state, and each cylindrical portion 10 , 10 are maintained in a stable state.

(Fifth embodiment)
As shown in FIG. 9(A), in the connecting device of the expansion bag in the fifth embodiment, two tubular portions 10, 10 having short axial lengths are superimposed one above the other. The two tubular portions 10, 10 are joined with a required width, and the two tubular portions 10, 10 are overlapped vertically at the joined portion to form a joint portion 11 by strongly sewing the two tubular portions 10, 10. The two tubular portions 10, 10 are strongly joined by the bonding.

Further, in this embodiment, as shown in FIG. 9B, two cylindrical portions 10 having a short axial length, which are connected by the connecting portion 11 so as to overlap each other as described above, 10 are arranged in the axial direction at a required interval, and each tubular portion 10 located on the upper side of the two tubular portions 10, 10 thus arranged in plurality and the tubular portion 10 on the lower side. Inflatable bags 20, 20 into which the filler X is injected are inserted into each of the cylindrical portions 10 positioned at the . there is In each of the expansion bags 20, 20, closed portions 22 closed by sewing or the like are provided at both ends of the expansion bags 20, 20 so that the filling material X injected into the expansion bags 20, 20 does not leak out. I have to.

Then, as in this embodiment, if two cylindrical portions 10, 10 having a short axial length connected by a connecting portion 11 are used and a plurality of cylindrical portions 10, 10 are arranged with a predetermined interval in the axial direction, The inflatable bag bodies 20, 20 inflated in the plurality of cylindrical portions 10, 10 arranged with a required space therebetween strongly force the plurality of upper and lower cylindrical portions 10, 10 arranged as described above. The connecting portions 11 are held in a flat state at the connecting portions 11 that are connected in a jointed manner, and the inflatable bags 20, 20 inflated in the cylindrical portions 10, 10 are in a stable state. will be maintained.

In the embodiment of the present invention, the tubular portion 10 and the connecting portion 11 are preferably tubular fabrics or tubular articles such as fire hoses in which a fabric layer and a resin layer are integrally formed.
The cylindrical portion 10 and the connecting portion 11 can also be formed by sewing a sheet-like material such as base cloth or tarpaulin. For example, the connecting portion 11 is made by rolling and sewing a sheet-like material, the connecting portion 11 is folded flat, and the end portion of another sheet-like material is sewn in an arch shape along the selvage in the width direction. It is also possible to form the tubular portion 10 with.
Of course, it is also possible to manufacture by combining a tubular article and a sheet-like article.

10: Cylindrical part 11: Connection part 11a: Space part 11b: Connection member 12: Deformation prevention material 12a: Resin plate 12b: Resin sheet 12c: Resin plate 13: Closing part 14: Surface joining fastener 20: Expansion bag body 21: Filling mouthpiece 22 : Blocking part 100 : Cylindrical part 110 : Connecting part S : Gap part X : Filling material Y1 : Structure Y2 : Ground

Claims (5)

In an expansion bag connector for connecting a plurality of expansion bags to be inflated by infusing a filler so as to overlap each other, an expansion bag to be inflated by being injected with a filler is inserted, and the expansion bag after expansion is inserted. A plurality of holding tubular portions are arranged so as to overlap in one direction, and a connecting portion for coupling the tubular portions with a required width along the axial direction of the tubular portions to the portion where the tubular portions overlap each other. The connector of the expansion bag provided with a large-diameter tubular portion that can be inserted and holds the tubular portion that holds the expanded expansion bag so that it overlaps in the one direction An inflatable bag body characterized in that a plurality of inflatable bags are arranged, and a connecting portion for connecting the large-diameter cylindrical portions with a required width along the axial direction is provided in a portion where the large-diameter cylindrical portions overlap each other . connector. In an expansion bag connector for connecting a plurality of expansion bags to be inflated by infusing a filler so as to overlap each other, an expansion bag to be inflated by being injected with a filler is inserted, and the expansion bag after expansion is inserted. A plurality of holding tubular portions are arranged so as to overlap in one direction, and a connecting portion for coupling the tubular portions with a required width along the axial direction of the tubular portions to the portion where the tubular portions overlap each other. and a deformation-preventing member made of a hard material is provided at the connecting portion. In the connector of the expansion bag according to claim 1 , a deformation preventing member made of a hard material is provided in the connecting portion that connects the cylindrical portions with a required width along the axial direction of the cylindrical portions. A connector for an inflatable bag, characterized by: In the expansion bag connector according to any one of claims 1 to 3, the cylindrical portion is formed into a bag shape by closing one end side of the cylindrical portion in the axial direction. A connector for an expansion bag, characterized by: Using the expansion bag connector according to any one of claims 1 to 4, an expansion bag into which a filler is injected and inflated is inserted into each of the tubular portions. An inflatable bag connected by a connector characterized by:

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