JP2022071990A - Sheet structure - Google Patents

Abstract

To provide a sheet structure that can improve workability without requiring strict dimensional accuracy and assembly accuracy, and furthermore, to improve strength and durability while securing a large internal space.SOLUTION: A sheet 11 is composed of a base 12 having a hexagonal shape in a plan view, a dome-shaped frame 14 provided on the base and configured by combining a plurality of triangular trusses 23a to 23i formed by wood shafts 13a to 13j, a steel frame round pipe 15 attached to the outside of the dome-shaped frame 14, and a sheet 16 stretched on the outer surface of the steel frame round pipe 15. In the dome-shaped frame 14, hub members 24 are attached to panel points 23j, 23k, 23m, and 23n of the triangular trusses 23a to 23i, respectively. The hub member 24 is formed with a hemispherical head part 24b at a tip part, and the steel frame round pipe 15 is formed with a spherical projection part 15c at both ends. The panel points 23j, 23k, 23 m, and 23n are arranged in a state where the spherical convex part 15c has a clearance E1 toward the hemispherical head part 24b.SELECTED DRAWING: Figure 8

Description

Application for application of Article 30, Paragraph 2 of the Patent Act (1) Date of completion: January 31, 2nd year of Reiwa Resol no Mori (521-4 Ueno, Nagara-cho, Chosei-gun, Chiba) (2) Date of publication: Ordinance The address of the website posted on April 1, 2nd year of Japan https: // www. seimei-no-mori. com https: // www. seimei-no-mori. com / grandvaux https: // www. seimei-no-mori. com / grandvaux / tent

The present invention relates to a sheet structure, and more particularly to a sheet structure in which a sheet is stretched on the outside of a dome-shaped frame.

Conventionally, as a sheet structure formed in a dome shape by stretching a sheet on the outside of a frame formed by combining triangular trusses, the triangular truss is composed of a plate member with a bent tip, and the point portion of the triangular truss is formed. In some cases, the bent tips of a plurality of plate members to be joined are joined together without any gap to form a frame (see, for example, Patent Document 1). Further, as a dome-shaped structure composed of a truss structure, a joint member is provided at a point portion of a triangular truss, and the tip of a pipe constituting the triangular truss is connected to the joint member without a gap to form a framework. (See, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2016-180203 Japanese Unexamined Patent Publication No. 8-60789

However, in the dome-shaped sheet structure shown in Patent Documents 1 and 2 described above, since the plate members and pipes constituting the triangular truss are connected without a gap at the point portion where the triangular truss is connected, the dimensional accuracy is high. And assembly accuracy was required. Further, in the above-mentioned skeleton, the sheet is easily damaged at the pointed portion, and there is a possibility that the durability of the sheet is lowered.

Furthermore, in recent years, glamping facilities have been constructed to enjoy camping and leisure while staying in a large tent set up in advance on the premises. The tent (sheet structure) was sometimes used. Some of the glamping tents are equipped with furniture such as beds and sofas, and electrical appliances such as air conditioners and TVs so that you can stay comfortably. A large internal space is required, and strength and durability are required.

Therefore, the present invention provides a sheet structure capable of improving workability without strict dimensional accuracy and assembly accuracy, and further improving strength and durability while ensuring a large internal space. The purpose is to do.

In order to achieve the above object, the sheet structure of the present invention is formed in a dome shape by combining a foundation having a polygonal shape in a plan view and a plurality of triangular trusses formed by a wooden axis, and is mounted on the foundation via a mounting member. It is a sheet structure formed by a dome-shaped frame to be formed, a steel-framed round tube attached to the outside of the wooden shaft, and a sheet stretched on the outer surface of the steel-framed round tube, and the dome-shaped frame is the above-mentioned dome-shaped frame. A hub member is attached to the point portion of the triangular truss, and the hub member is provided with a plurality of connecting frames for joining the end portions of the plurality of wooden shafts on the base end portion side, and a hemispherical head portion is provided at the tip portion. The steel frame round tube is provided with a mounting portion attached to the wooden shaft, a round pipe portion extending outside the wooden shaft via the mounting portion, and a round tube portion along the wooden shaft. The spherical convex portions are provided at both ends of the tube portion, and the spherical convex portions are characterized in that they are arranged with a gap toward the hemispherical head at the point portion.

Further, the wooden shaft mounting member includes a mounting portion to be mounted on the foundation and a connecting frame for joining the end portions of the wooden shaft, and the connecting frame is inserted into a slit formed at the end portion of the wooden shaft. It is preferable to attach the wooden shaft to the wooden shaft mounting member by fixing the wooden shaft.

Further, a seat tensioning member for fixing the seat while applying tension is attached to the foundation, and the seat tensioning member is attached to the foundation at a mounting portion to be mounted on the foundation and above the outer end of the mounting portion. The sheet has a cylindrical portion extending along the sheet and abutting against the back surface of the sheet, a rope guide rod provided above and inside the cylindrical portion, and a rope insertion hole provided above the rope guide rod. It is preferable that a plurality of ropes are attached to the back side of the hem portion, the ropes are inserted into the rope insertion holes, and the ropes are pulled and hung on the rope guide rods to be fixed.

According to the sheet structure of the present invention, since a dome-shaped frame formed by combining a plurality of triangular trusses formed by wooden shafts is provided on the foundation, the strength can be improved and the height is high. The ceiling height can be secured and the livability can be improved.

Further, in the dome-shaped frame, a hub member is attached to the point portion of the triangular truss, and the hub member has the end portion of the wooden shaft joined to the connecting frame provided on the base end side and protrudes to the outside of the wooden shaft. Since the spherical convex part of the steel frame round tube is arranged with a gap toward the hemispherical head, distortion is adjusted without tightening the dimensional accuracy and assembly accuracy of the rating part. However, the sheet can be stretched and the sheet structure can be easily assembled. Further, since the sheet comes into contact with the hemispherical head and the arc surface of the steel frame round tube, it is possible to prevent the sheet from being damaged by sliding contact with the dome-shaped frame during tensioning.

Further, the wooden shaft mounting member includes a mounting portion to be mounted on the foundation and a connecting frame for joining the end portion of the wooden shaft, and the connecting frame is inserted and fixed in a slit formed at the end portion of the wooden shaft. Therefore, by attaching the wooden shaft to the wooden shaft mounting member, a dome-shaped frame composed of the base shaft can be easily erected on the foundation.

Further, a sheet tensioning member is provided on the foundation, and a plurality of ropes provided on the back side of the seat are inserted into the rope insertion holes formed in the seat tensioning member, and the rope guide rod is pulled while being hung and fixed. In a stable state, you can apply tension to the seat while adjusting the distortion. Further, the outer peripheral surface of the cylindrical portion comes into contact with the back surface of the sheet, so that damage to the sheet can be prevented. Further, by stretching the tensioned sheet, it is possible to provide an internal space that appropriately reflects the external shadow, and it is possible to improve the livability.

It is a front view of the tent which shows the 1st Embodiment example of this invention. It is also a side view of the tent. It is also a plan view of the tent. It is also a perspective view showing the foundation of the tent. It is also a plan view showing the dome-shaped frame of the tent. FIG. 7 is a view taken along the line VI-VI of FIG. 7. Similarly, it is a plan view which shows the foundation of a tent, a wooden shaft mounting member, and a wooden shaft. It is also the front view which shows the grade part of the triangular truss of the dome-shaped frame. It is also a plan view showing the graded portion of the triangular truss of the dome-shaped frame. FIG. 8 is a cross-sectional view taken along the line XX of FIG. It is also a cross-sectional view of the ground side of the tent. It is also a cross-sectional view of the entrance / exit of the tent. It is also a side view of the entrance and exit of the tent. It is a top view of the tent which shows the 2nd form example of this invention. FIG. 14 is a cross-sectional view taken along the line XV-XV of FIG. FIG. 14 is a cross-sectional view taken along the line XVI-XVI of FIG.

1 to 13 show an example of a first embodiment in which the sheet structure of the present invention is applied to a tent. The tent 11 of this embodiment is a large tent used in a glamping facility, and is a dome formed by a hexagonal foundation 12 in a plan view and a wooden shaft 13 (13a to 13j) erected on the foundation 12. It is formed of a shaped frame 14, a steel round tube 15 attached to the outside of the dome-shaped frame 14, and a sheet 16 stretched on the outer surface of the steel round tube 15. The seat on the front side (arrow A side) of the tent 11 is provided with an opening / closing portion 16a for entrance / exit, and an anterior chamber 17 for taking off shoes is provided inside the opening / closing portion 16a.

The front side of the foundation 12 on which the opening / closing portion 16a is provided is the first side portion 12a, and the second side portion 12b, the third side portion 12c, the fourth side portion 12d, the fifth side portion 12e, and the sixth side are clockwise. A portion 12f is provided, and the sixth side portion 12f is formed so as to project in a triangular shape toward the front side, and one end of the anterior chamber beam member 18 is attached to the top portion 12g (FIG. 4). Further, the second side portion 12b is formed so as to have a gradually higher height dimension from the front side toward the corner portion with the third side portion 12c, and the third side portion 12c is formed from the corner portion with the second side portion 12b. , The height dimension is gradually increased toward the corner portion with the fourth side portion 12d. Further, the fifth side portion 12e is formed so as to have a gradually higher height dimension from the corner portion with the sixth side portion 12f toward the corner portion of the fourth side portion 12d, and the fourth side portion 12d is formed with the fifth side portion. The height dimension is gradually increased from the corner portion with 12e toward the corner portion with the third side portion 12c.

A steel-framed column member 19 is erected inside the corner portion of the first side portion 12a and the second side portion 12b, and the other end portion of the front chamber beam member 18 is attached to the column member 19. Further, in a state where the steel-framed first sheet upholstery member 20 to which the end portion of the sheet 16 is attached is slanted over the apex of the pillar member 19 and the front side end portion 12h of the second side portion 12b. It is provided (Fig. 13).

Further, the wooden shaft mounting member 22a is on the upper surface of the corner portion of the second side portion 12b and the third side portion 12c, and the wooden shaft mounting member 22b is on the upper surface of the corner portion of the third side portion 12c and the fourth side portion 12d. However, a wooden shaft mounting member 22c is provided on the upper surface of the corner portion of the fourth side portion 12d and the fifth side portion 12e, and the wooden shaft mounting member 22c is provided on the upper surface of the corner portion of the fifth side portion 12e and the sixth side portion 12f. 22d are attached respectively.

Each of the wooden shaft mounting members 22a, 22b, 22c, 22d is a first unit that joins the mounting portion 22g, which is attached to the bolt 22e embedded in the foundation 12 via the nut members 22f, 22f, and the end portion of the wooden shaft 13. It is provided with a connecting frame 22h. For example, in the wooden shaft mounting member 22b shown in FIGS. 5 and 6, the first connecting frame 22h is projected from the mounting portion 22g in a state of being inclined toward the inside of the tent and upward, and the first connecting frame is projected. By inserting the 22h into a slit formed at the end of the wooden shaft 13 and fixing it with a plurality of bolts 22i, the wooden shaft 13c is connected to the third side portion 12c of the foundation 12 via the wooden shaft mounting member 22b. It is attached to the upper surface of the corner portion with the fourth side portion 12d. Since one wooden shaft 13c is attached to the wooden shaft mounting member 22b, one first connecting frame 22h is provided, but the other wooden shaft mounting members 22a, 22c, and 22d are connected to each other. Two or three first connecting frames 22h are provided depending on the number of shafts 13.

As shown in FIG. 5, the dome-shaped frame 14 has nine triangular trusses 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i having different shapes formed by the wooden shaft 13 (13a to 13j). Are combined with each other to form a dome shape. As shown in FIGS. 1 to 5, the triangular truss 23a is composed of a second side portion 12b, a first sheet stretching member 20, and a wooden shaft 13a connected to a wooden shaft mounting member 22a, and is triangular. The truss 23b is composed of a third side portion 12c, a wooden shaft 13b connected to the wooden shaft mounting member 22a, and a wooden shaft 13c connected to the wooden shaft mounting member 22b. The triangular truss 23c has a fourth side. It is composed of a portion 12d, a wooden shaft 13c, and a wooden shaft 13d connected to the wooden shaft mounting member 22c. The triangular truss 23d (FIG. 2) is composed of a fifth side portion 12e, a wooden shaft 13e connected to the wooden shaft mounting member 22d, and a wooden shaft 13f connected to the wooden shaft mounting member 22c. (FIG. 2) is composed of a sixth side portion 12f, a wooden shaft 13e, and a wooden shaft 13g connected to the wooden shaft 13e and one end of the front chamber beam member 18. The triangular truss 23f is composed of a front chamber beam member 18, a wooden shaft 13h connected to one end of the front chamber beam member 18, and a wooden shaft 13i connected to the other end of the front chamber beam member 18. The triangular truss 23g is composed of wooden shafts 13i, 13a, 13b. The triangular truss 23h is composed of a wooden shaft 13d, 13f and a wooden shaft 13j connected to the wooden shaft 13e, and the triangular truss 23i is composed of a wooden shaft 13g, 13h, 13j.

In this way, by combining the nine triangular trusses 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i with each other, the wooden shafts 13h, 13i, 13b, 13c, 13d, 13j intersect, and the triangular trusses The point portion 23j to which the 23f, 23g, 23b, 23c, 23h, 23i are connected, the wooden shafts 13a, 13i, the front chamber beam member 18, and the first sheet upholstery member 20 intersect, and the triangular truss 23a, 23g, A rating portion 23k to which the 23f is connected is formed. Further, the wooden shafts 13f, 13j, 13g, 13e intersect with each other, and the point portion 23m connecting the triangular trusses 23d, 23e, 23h, 23i, the wooden shafts 13g, 13h, and the beam member 18 for the anterior chamber intersect, and the triangular truss A rating portion 23n to which 23e, 23i, and 23f are connected is formed.

Hub members 24 are provided at the rating points 23j, 23k, 23m, and 23n, respectively, and the wooden shafts 13 are connected to each other via the hub members 24. For example, in the rating portion 23j provided on the top of the tent 11, as shown in FIGS. 8 and 9, the hub member 24 has six wooden shafts 13b, 13c, 13d, 13j, 13h on the proximal end side. A hemispherical head 24b is provided at the tip of each of the six second connecting frames 24a for joining the ends of 13i and 13i. The second connecting frame 24a protrudes downward at a predetermined angle toward the inside of the tent, is inserted into a slit formed at the end of the wooden shaft 13, and is fixed by a plurality of bolts 24c. Since the hub member 24 provided in the rating portion 23j connects the six wooden shafts 13b, 13c, 13d, 13j, 13h, and 13i, it forms six second connecting frames 24a. The hub member 24 provided in the rating portions 23k, 23m, 23n is provided with three or four second connecting frames 24a depending on the number of wooden shafts 13 to be connected.

As shown in FIGS. 8, 9 and 10, the steel frame round pipe 15 is attached to the outside of the wooden shafts 13a to 13j via the mounting portions 15a attached to the wooden shafts 13a to 13j and the mounting portions 15a, respectively. It is provided with a round pipe portion 15b extending along the wooden shafts 13a to 13j, and spherical convex portions 15c provided at both ends of the round pipe portion 15b. The mounting portion 15a includes a frame body 15d having a U-shaped cross section that surrounds the outer surfaces and both side surfaces of the wooden shafts 13a to 13j, and a support piece 15e that protrudes from the frame body 15d and supports the round tube portion 15b. In preparation for one piece, the frame body 15d is attached to the wooden shaft 13 with a plurality of bolts 15f. The spherical convex portion 15c of the round tube portion 15b is arranged with a gap E1 toward the hemispherical head portion 24b of the hub member 24.

For the sheet 16, for example, a well-known fluororesin curtain material having excellent nonflammability and durability and having a certain degree of translucency is used, and the outside of the dome-shaped frame 14 is integrally covered. Further, a window sheet 16b for daylighting having high translucency is welded to a part of the sheet 16. Further, a second sheet stretching member 21 (seat stretching member of the present invention) is attached to the foundation 12, and the back side of the hem of the sheet 16 corresponding to the second sheet stretching member 21 and the first sheet. A rope 25 for sheet tension is specified on the back side of the end corresponding to the tension member 20 and the back side of the end corresponding to the third sheet tension member 20a provided on the front chamber beam member 18. It is installed at intervals of.

As shown in FIG. 11, the second sheet tensioning member 21 has a mounting portion 21a attached to the first side portion 12a to the sixth side portion 12f of the foundation 12, and the foundation 12 above the outer end of the mounting portion 21a. A cylindrical portion 21b extending along the first side portion 12a to the sixth side portion 12f and abutting on the back surface of the sheet 16, a rope guide rod 21c provided above and inside the cylindrical portion 21b, and a rope guide rod 21c. It has a rope insertion hole 21d provided above the. The mounting portion 21a is formed in a plate shape having a rising piece 21e at the outer end, and is mounted on a bolt 21f embedded in the foundation 12 via nut members 21g and 21g. The cylindrical portion 21b is provided at the upper end of the rising piece 21e, and a rope guide rod 21c is provided at the upper portion of the cylindrical portion 21b via a support piece 21h projecting upward and inward. Further, the first sheet stretching member 20 and the third sheet stretching member 20a provided on the front chamber beam member 18 have the same structure as the second sheet stretching member 21, and the third sheet stretching member 20a has the same structure. As shown in FIG. 12, the member 20a is connected to the mounting frame body 20c connected to the front chamber beam member 18 by a plurality of bolts 20b via the support portion 20d.

As shown in FIG. 11, the rope 25 attached to the back side of the hem of the seat 16 is inserted into the rope insertion hole 21d of the second sheet tensioning member 21, and is pulled and fixed to the rope guide rod 21c. By doing so, tension is applied to the sheet 16. Further, the rope 25 provided on the back side of the side portion of the seat 16 corresponding to the first sheet tensioning member 20 is connected and fixed to the first seat tensioning member 20 while being pulled, and tension is applied to the seat 16. Further, the rope 25 attached to the back side of the side portion corresponding to the front chamber beam member 18 is connected and fixed to the third sheet tensioning member 20a while being pulled, and tension is applied to the seat 16. Further, the hem portion of the seat 16 is fixed to the side surface of the foundation 12 with a bolt 16e via a flat bar 26.

Further, the front side sheet 16c is hung down from the first sheet upholstery member 20 and the front chamber beam member 18, and the front side sheet 16c is formed to a size that allows people to enter and exit by the fishing gear fastener 16d. An opening / closing portion 16a partitioned in a rectangular shape is provided, and an opening / closing window 16f for ventilation is formed above the opening / closing portion 16a. Further, an insect repellent net 27 is hung on the beam member 18 for the front chamber, and the front chamber 17 is formed between the front side sheet 16c and the insect repellent net 27.

The tent 11 formed as described above has a dome-shaped frame 14 formed by combining triangular trusses 23a to 23i formed by wooden shafts 13a to 13j on the foundation 12, so that the strength and durability are improved. Can be planned. In addition, a high ceiling height can be secured, and the dome-shaped frame 14 is covered with the sheet 16 in a state where tension is applied and the sheet 16 has a certain degree of translucency. It can be provided and the livability can be improved. Further, since the window sheet 16b having high translucency is welded, light can be satisfactorily taken into the internal space and the state of the outside can be visually recognized from the inside.

Further, the dome-shaped frame 14 has a spherical convex portion 15c of the steel frame round tube 15 toward the hemispherical head 24b of the hub member 24 attached to the rating portions 23j, 23k, 23m, 23n of the triangular trusses 23a to 23i, respectively. Is arranged with a gap E1 open, so tension is applied to the sheet 16 while adjusting the distortion without tightening the dimensional accuracy and assembly accuracy of the rating points 23j, 23k, 23m, and 23n. It can be stretched and the tent 11 can be assembled.

Further, since the tensioned sheet 16 comes into contact with the hemispherical head 24b and the arc surface of the steel frame round tube 15, it is possible to prevent the sheet 16 from being in sliding contact with the dome-shaped frame 14 and being damaged during tensioning.

Further, by inserting and joining a slit formed at the end of the wooden shaft 13 to the first connecting frame 22h of the wooden shaft mounting members 22a, 22b, 22c, 22d mounted on the foundation 12, the wooden shaft mounting member 22a, 22b, 22c, 22d can be joined onto the foundation 12. The dome-shaped frame 14 can be easily erected.

Further, the second sheet tensioning member 21 is attached on the foundation 12, and the plurality of ropes 25 provided on the back side of the seat 16 are inserted into the rope insertion holes 21d formed in the second sheet tensioning member 21, and the rope guide rod is inserted. By hanging and fixing the sheet 16 while pulling it, tension can be applied to the sheet 16 in a stable state. Further, the outer peripheral surface of the cylindrical portion 21b comes into contact with the back surface of the sheet 16, so that damage to the sheet 16 can be prevented.

14 to 16 show a second embodiment of the present invention, and the same reference numerals are given to those showing the same components as those of the first embodiment, and detailed description thereof will be omitted. ..

In this embodiment, a wood deck 31 formed flush with the floor surface of the tent 11 is provided continuously to the tent 11. The wooden deck 31 is provided with a cooking table 32 and an outdoor unit 33 for air conditioning equipment provided in the tent 11. In this embodiment, the wood deck 31 is provided as an extension of the internal space of the tent 11, so that a feeling of openness can be provided and a spacious space can be provided.

The sheet structure of the present invention is not limited to the one used for a tent as in each of the above-mentioned examples, and can be widely applied to a building such as a planetarium. Further, the foundation is not limited to the one formed in a hexagonal shape in a plan view, but may be formed in a polygonal shape in a plan view, and the number of triangular trusses constituting the dome-shaped frame erected on the foundation is arbitrary. Is. Further, the sheet may be stretched without tension.

11 ... Tent, 12 ... Foundation, 12a ... 1st side, 12b ... 2nd side, 12c ... 3rd side, 12d ... 4th side, 12e ... 5th side, 12f ... 6th side, 12g ... top, 12h ... front side end, 13,13a, 13b, 13c, 13d, 13e, 13f, 13g, 13h, 13i, 13j ... wooden shaft, 14 ... dome-shaped frame, 15 ... steel round tube ..., 15a ... Mounting part, 15b ... Round tube part, 15c ... Spherical convex part, 15d ... Frame body, 15e ... Support piece, 15f ... Bolt, 16 ... Sheet, 16a ... Opening and closing part, 16b ... Window sheet, 16c ... Front side sheet , 16d ... Fishing tackle fastener, 16e ... Bolt, 16f ... Open / close window, 17 ... Front chamber, 18 ... Beam member, 19 ... Pillar member, 20 ... First sheet tension member, 20a ... 31st sheet tension member, 20b ... Bolt, 20c ... Mounting frame, 20d ... Support part, 21 ... Second sheet price tensioning member, 21a ... Mounting part, 21b ... Cylindrical part, 21c ... Rope guide rod, 21d ... Rope insertion hole, 21e ... Rising piece, 21f ... Bolt, 21g ... Nut member, 21h ... Support piece, 22a, 22b, 22c, 22d ... Wood shaft mounting member, 22e ... Bolt, 22f ... Nut member, 22g ... Mounting part, 22h ... First connecting frame, 22i ... Bolt, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i ... Triangular truss, 23j, 23k, 23m, 23n ... Rating part, 24 ... Hub member, 24a ... Second connecting frame, 24b ... Hemisphere Head, 24c ... Bolt, 25 ... Rope, 26 ... Flat bar, 27 ... Insect repellent net, 31 ... Wood deck, 32 ... Cooking table, 33 ... Outdoor unit

In order to achieve the above object, the sheet structure of the present invention is formed in a dome shape by combining a foundation having a polygonal shape in a plan view and a plurality of triangular trusses formed by a wooden axis, and is mounted on the foundation via a mounting member. It is a sheet structure formed by a dome-shaped frame to be formed, a steel-framed round tube attached to the outside of the wooden shaft, and a sheet stretched on the outer surface of the steel-framed round tube, and the dome-shaped frame is the above-mentioned dome-shaped frame. A hub member is attached to a point portion of the triangular truss, and the hub member extends from the inside to the outside of the seat structure, and ends of a plurality of the wooden shafts on the base end side arranged inside. A hemispherical head is provided at the tip portion arranged on the outside, and the steel frame round tube is provided with a mounting portion attached to the wooden shaft and via the mounting portion. A round tube portion extending along the wooden axis and spherical convex portions provided at both ends of the round tube portion are provided on the outside of the wooden shaft, and the spherical convex portion is the pointed portion. It is characterized in that it is arranged with a gap toward the hemispherical head.

Hub members 24 are provided at the rating points 23j, 23k, 23m, and 23n, respectively, and the wooden shafts 13 are connected to each other via the hub members 24. For example, in the rating portion 23j provided on the top of the tent 11, as shown in FIGS. 8 and 9, the hub member 24 has a shape extending from the inside to the outside of the tent 11. Six second connecting frames 24a for joining the ends of the six wooden shafts 13b, 13c, 13d, 13j, 13h, and 13i to the base end side arranged inside are the tip portions arranged outside. A hemispherical head 24b is provided in each of the above. The second connecting frame 24a protrudes downward at a predetermined angle toward the inside of the tent, is inserted into a slit formed at the end of the wooden shaft 13, and is fixed by a plurality of bolts 24c. Since the hub member 24 provided in the rating portion 23j connects the six wooden shafts 13b, 13c, 13d, 13j, 13h, and 13i, it forms six second connecting frames 24a. The hub member 24 provided in the rating portions 23k, 23m, 23n is provided with three or four second connecting frames 24a depending on the number of wooden shafts 13 to be connected.

Claims (3)

A dome-shaped foundation is formed by combining a plan-view polygonal foundation and a plurality of triangular trusses formed by a wooden shaft, and a dome-shaped frame mounted on the foundation via a wooden shaft mounting member and a mounting on the outside of the wooden shaft. It is a sheet structure formed by a steel frame round tube to be formed and a sheet stretched on the outer surface of the steel frame round tube.
In the dome-shaped frame, a hub member is attached to the point portion of the triangular truss.
The hub member is provided with a plurality of connecting frames for joining the end portions of the plurality of wooden shafts on the base end portion side, and a hemispherical head is provided at the tip end portion.
The steel-framed round pipe has a mounting portion attached to the wooden shaft, a round pipe portion extending outside the wooden shaft via the mounting portion, and both ends of the round pipe portion. With a spherical convex part provided in
The spherical convex portion is a sheet structure characterized in that the spherical convex portion is arranged with a gap toward the hemispherical head at the rating portion. The wooden shaft mounting member includes a mounting portion to be mounted on the foundation and a connecting frame for joining the end portions of the wooden shaft, and the connecting frame is inserted into a slit formed at the end portion of the wooden shaft. The seat structure according to claim 1, wherein the wooden shaft is attached to the wooden shaft mounting member by fixing the wooden shaft. A sheet tensioning member for fixing the sheet while applying tension is attached to the foundation, and the sheet tensioning member is attached to the mounting portion to be mounted on the foundation and above the outer end of the mounting portion along the foundation. The sheet has a cylindrical portion that is extended and abuts on the back surface of the sheet, a rope guide rod provided above and inside the cylindrical portion, and a rope insertion hole provided above the rope guide rod. The sheet structure according to claim 1 or 2, wherein a plurality of ropes are attached to the back side of the hem portion, the ropes are inserted into the rope insertion holes, and the ropes are pulled and hung on the rope guide rods to be fixed. ..

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