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JP-2026075040-A - Air beam and beam structure using the same

JP2026075040AJP 2026075040 AJP2026075040 AJP 2026075040AJP-2026075040-A

Abstract

[Problem] To provide an air beam that can be adjusted to any desired length according to the site area of the air beam tent installation site, the size of the structure to be covered, etc., and a beam structure using the same. [Solution] The air beams 20, 21-26 each have a cylindrical bag 41 that expands and unfolds when fluid is supplied, and adjustment means 55, 58 disposed inside the cylindrical bag 41 that can be continuously adjusted to any length along the longitudinal axis X. By using this to form a beam structure 10, the length can be adjusted to any desired length according to the site area of the air beam tent's installation location, the size of the structure to be covered, etc. [Selection Diagram] Figure 8

Inventors

  • 道脇 裕

Assignees

  • Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社

Dates

Publication Date
20260507
Application Date
20250617
Priority Date
20241021

Claims (15)

  1. A cylindrical bag that expands and unfolds when fluid is supplied, An adjustment means is disposed inside the above-mentioned cylindrical bag and can be infinitely adjusted in the longitudinal axis direction to any length, An air beam characterized by having the following features.
  2. The air beam according to claim 1, characterized in that the adjustment means adjusts the length of the tubular bag by retracting or extending the end of the tubular bag.
  3. The air beam according to claim 1, characterized in that the length in the longitudinal direction of the cylindrical bag is infinitely adjustable within a range of approximately double or half by the adjustment means.
  4. The air beam according to claim 1, characterized in that the volume of the internal space of the cylindrical bag is variable by the adjustment means, and a predetermined rigidity is maintained when expanded by a predetermined internal pressure due to the fluid.
  5. The air beam according to claim 1, characterized in that the tubular bag has a buckling prevention means that maintains its tubular shape during expansion and contraction.
  6. The air beam according to claim 5, characterized in that the buckling prevention means is provided circumferentially along the longitudinal axis of the cylindrical bag body over substantially its entire length.
  7. The air beam according to claim 6, characterized in that the buckling prevention means are arranged in multiple quantities at approximately equal intervals around the center of the cylindrical bag.
  8. The air beam according to claim 1, characterized in that it has connecting members provided at both ends of the tubular bag-shaped body, which are connected to joints during the assembly of the structure.
  9. The aforementioned cylindrical bag has a substantially cylindrical outer body and an inner body, both ends of which are connected to each other. The air beam according to claim 1, characterized in that the adjustment means is a cable member inserted through the conduit of the inner body and connected to one end of the cylindrical bag body, and adjusts the length of the cylindrical bag body by tension and slack.
  10. The air beam according to claim 1, characterized in that the adjusting means is an elastic body inserted into the interior of the tubular bag, connected to one end of the tubular bag, and whose natural length is set to the shortest length of the tubular bag.
  11. A plurality of air beams according to any one of claims 1 to 10, A beam structure characterized by having a framework formed by multiple air beams.
  12. The beam structure according to claim 10, characterized in that a truss structure is formed by having multiple air beams constituting diagonal members.
  13. The beam structure according to claim 10, characterized in that multiple air beams constitute a beam member that is erected between two or more column members.
  14. Furthermore, the beam structure according to claim 13 is characterized by having diagonal members provided across the column members and the beam members.
  15. The beam structure according to claim 14, characterized in that the diagonal member is formed by the air beam.

Description

This invention relates to an air beam used in air beam tents and the like, and an air beam structure using the same. Traditionally, air beam houses, such as air tents used as temporary evacuation shelters during disasters, negative/positive pressure shelters for infectious disease control, and event venues, are well-known. An air beam house consists of a beam structure using multiple air beams as the framework, covered with sheet material. For example, Patent Documents 1 and 2 disclose a technology for an air beam house that can be formed to a desired size by adjusting the length of the air beam. Conventionally, the length of columns, beams, etc., is adjusted by connecting numerous air beam elements in a desired combination, or by providing multiple ring bodies at intervals along the longitudinal direction on the outer surface of the air beam, and fixing the multiple ring bodies close together, thereby reducing the length of the air beam that forms the column, beam, etc. Thus, conventional air beam structures are configured to form an air beam house of a desired size by connecting multiple air beam elements to vary their length, or by reducing and fixing the spacing between multiple ring bodies provided on multiple air beams to vary the length of columns, beams, etc. Japanese Patent Publication No. 2000-234456Japanese Patent Publication No. 2003-148001 Perspective view showing an example of the air beam tent of this embodiment.The same, a perspective view showing the configuration of the beam structure.Front view of the beam structure.Rear view of the beam structure.Side view of the beam structure.Same, top view of the beam structure.The same is a perspective view showing the configuration of the air beam.The same cross-sectional diagram shows the air beam in its extended state from its shortest to longest position.The same, a front view of the beam structure showing how the horizontal direction is variable due to the expansion and contraction of the air beam.The rear view of the beam structure, showing how the horizontal direction is variable due to the expansion and contraction of the air beam.The same, a side view of the beam structure showing how the horizontal direction is variable due to the expansion and contraction of the air beam.The same, a top view of the beam structure showing how the horizontal direction is variable due to the expansion and contraction of the air beam.The same, a front view of the beam structure showing how the vertical direction is variable due to the expansion and contraction of the air beam.The rear view of the beam structure, showing how the vertical direction is variable due to the expansion and contraction of the air beam.The same, a side view of the beam structure showing how the vertical direction is variable due to the expansion and contraction of the air beam.The same, a perspective view showing the beam structure in a state where the main body is covered.Perspective view showing the configuration of the modified air beam.Cross-sectional view showing the configuration of a modified air beam.A cross-sectional view showing the air beam in its extended and retracted state from its shortest to longest position, relating to a modified form. The air beam and beam structure using the present invention will be described below with reference to the drawings. Please note that the drawings based on each embodiment in the following description are schematic, and the relationship between the thickness and width of each part, as well as the thickness ratios of each part, may differ from the actual dimensions. Furthermore, there may be differences in dimensional relationships and ratios between drawings. The air beam tent 1, an inflatable tent, has a curtain material 2 and a beam structure 10 of the frame unit, as shown in Figure 1. Figure 1 is a perspective view showing an example of the air beam tent 1 of this embodiment. The canopy material 2 comprises a roof canopy 3, a front canopy 4, two side canopies 5 and 6, and a rear canopy 7. Here, the front canopy 4 and rear canopy 7 constitute the end canopy. The roof canopy 3, front canopy 4, each side canopy 5 and 6, and rear canopy 7 may be integrally molded by bonding, sewing, high-frequency welding, hot-air welding, etc., at their adjacent edges, or each edge may be detachably separated and molded using fastening means such as line fasteners, hook fasteners, or point fasteners. The roof curtain 3, front curtain 4, the two side curtains 5 and 6, and the rear curtain 7 can each be formed by providing flame retardancy, heat resistance, self-extinguishing properties, etc., to a sheet material made of synthetic fibers such as polyester coated with polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), etc., or a fluororesin sheet such as ETEF, or a sheet material combining these. Furthermore, the tent material 2 is preferably a lightweight fabric, and may be a waterproofed sheet material made of a three-lobe cross-section nylon mater