JP7766001B2 - Assembled Structures - Google Patents

Description

The present invention relates to an assembled structure constructed by combining multiple panels and having an internal cavity.

Prefabricated structures, which are easily constructed by combining multiple panels, are used for a variety of purposes, such as temporary living spaces or workspaces. Such structures have hollow spaces inside, and users of the structures move around within the hollow spaces or pass through them when traveling to a designated destination.

An example of the above-mentioned assembled structure is the structure described in Patent Document 1. The structure described in Patent Document 1 has walls and a roof made of cardboard, each of which is constructed by connecting multiple panels, and people can perform specified tasks inside the structure.

Japanese Patent Application Laid-Open No. 2007-308956

It is preferable that the above-mentioned assembled structure be assembled to form a stable structure. In other words, when the multiple panels that make up the above-mentioned assembled structure are combined, the structure must be balanced.

The present invention was made in light of the above circumstances, and aims to solve the problems of the prior art, and specifically to provide an assembly structure that can be assembled in a balanced and stable state.

In order to achieve the above-mentioned object, the assembled structure of the present invention is an assembled structure having an internal cavity, and each of the side portions on both sides in at least one of the front-to-rear direction of the assembled structure, which is perpendicular to the height direction of the assembled structure, and the width direction of the assembled structure, which is perpendicular to both the height direction and the front-to-rear direction, is constructed by combining four panels, and the lengths of the folding lines of each of the four panels are equal between the panels, and in each side portion, the four panels are combined in a state where a rectangle with the folding lines of each of the four panels as its four sides appears on the side portion.
In the assembled structure configured as described above, on each of the side sections on both sides in at least one direction, the four panels that make up the side section are arranged symmetrically around a rectangle whose four sides are the folding lines of each panel. By combining the four panels in this arrangement, it is possible to assemble an assembled structure that is balanced and stable.

Furthermore, in the assembled structure of the present invention, when the assembled structure is viewed from directly above, the upper edge of one side portion in at least one direction and the upper edge of the other side portion may form the outer edge of a rectangle with four equal sides.
Furthermore, in the assembled structure of the present invention, when the assembled structure is viewed from directly below, the lower edge of one side portion in at least one direction and the lower edge of the other side portion may form the outer edge of a rectangle with four equal sides.
In the assembled structure of the present invention, a rectangular opening with four equal sides may be provided at the lower end of the assembled structure.

In the assembled structure of the present invention, each of the first side sections provided on both sides in the front-to-rear direction may be formed by combining four panels. In this case, it is preferable that the lengths of the folding lines of each of the four panels constituting the first side section are equal between the panels, and that the four panels constituting each first side section are combined in a manner that a rectangle having four sides defined by the folding lines of each of the four panels appears on the first side section.
Each of the second side surface portions provided on both sides in the width direction may be formed by combining four panels. In this case, it is preferable that the lengths of the folding lines of the four panels constituting the second side surface portion are equal between the panels, and that the four panels constituting each second side surface portion are combined in such a way that a rectangle having four sides defined by the folding lines of the four panels appears on the second side surface portion.

In addition, in the assembled structure of the present invention, the first side portion may be formed by folding each of the four panels that make up the first side portion at folding lines, and may have an extending portion that extends outward in the front-to-back direction, and a folded portion that is continuous with the tip portion of the extending portion and folded back inward in the front-to-back direction.
Furthermore, in the above configuration, the first side surface portion may include four extension portions and four folded portions. In this case, it is more preferable to further include an attachment piece that straddles two adjacent folded portions and is attached to each of the two adjacent folded portions.

Furthermore, in the assembled structure of the present invention, each of the four panels constituting each side portion may have a first portion whose planar shape is an isosceles triangle and a second portion whose planar shape is an equilateral triangle and is continuous with the first portion via a folding line. In this case, the shape of the first portion of each of the four panels may be congruent between the panels, and the shape of the second portion of each of the four panels may be congruent between the panels.

The assembled structure of the present invention may also include a cone-shaped top portion disposed at the upper end of the assembled structure. In this case, the top portion is placed on the upper ends of the side portions on both sides in at least one direction, and the lower edge of the top portion preferably forms the outer edge of a rectangle with four equal sides.
Furthermore, in the above configuration, it is preferable that the apex portion has four apex side surfaces, and each of the four apex side surfaces has an isosceles triangle shape.
Furthermore, in the above configuration, the top portion may be formed by combining two or more panels. In this case, each of the two or more panels forming the top portion may include a connecting piece, and the connecting pieces may be connected to each other when the two or more panels are combined. In addition, if the assembled structure is structured so that it can pass through the cavity in either the front-rear direction or the width direction, it is preferable that the connecting piece in the connected state extend in a direction intersecting either one of the directions.

Furthermore, in the assembled structure of the present invention, each of the four panels may be made of cardboard.

In addition, in the assembled structure of the present invention, the extension and folded portions may be inserted into a dome-side opening provided in the dome-shaped structure, thereby connecting the cavity to the interior of the dome-shaped structure.

Furthermore, in order to solve the above-mentioned problems, an assembly structure according to one embodiment of the present invention is an assembly structure having an internal cavity, and each of the side surfaces on both sides in at least one of the front-to-rear direction of the assembly structure, which is perpendicular to the height direction of the assembly structure, and the width direction of the assembly structure, which is perpendicular to both the height direction and the front-to-rear direction, has four congruent triangular faces, and on each side surface, the four triangular faces are arranged so that a quadrangle with equal sides consisting of one side of each of the four triangular faces appears on the side surface.

The present invention realizes an assembly structure that can be assembled in a balanced and stable state.

FIG. 1 is an elevation view of a structural unit consisting of an assembly structure and a dome-shaped structure according to one embodiment of the present invention. 1 is a plan view of a structural unit consisting of an assembled structure and a dome-shaped structure according to one embodiment of the present invention. FIG. FIG. 1 is a front view of a dome-shaped structure. 1 is a perspective view of an assembled structure according to one embodiment of the present invention; FIG. 1 is a first side view of an assembled structure according to one embodiment of the present invention. FIG. 2 is a second side view of an assembled structure according to one embodiment of the present invention. 1 is a plan view of an assembled structure according to one embodiment of the present invention; FIG. 2 is a bottom view of an assembled structure according to one embodiment of the present invention. FIG. 8 is a cross-sectional view taken along the line AA in FIG. 7. 10 is a diagram showing a state in which an attachment piece has been removed from one end of the assembly structure in the front-rear direction, and is an enlarged view of an extension portion and a folded-back portion. FIG. FIG. 10 is a diagram showing the assembled structure connected to the dome-shaped structure, and is a diagram showing a cross section taken along the height direction and normal direction of the assembled structure. FIG. 10 is a plan view showing a first example of the mounting piece. FIG. 10 is a plan view showing a second example of the mounting piece. FIG. 10 is a perspective view showing how the attachment piece is attached. 10 is a cross-sectional view showing a moment acting on a folded portion when the attachment piece is attached. FIG. FIG. 2 is a perspective view showing the appearance of the partition section. FIG. 10 is a diagram showing the partition section in use, and is a cross section taken along the width direction and normal direction of the assembled structure. FIG. 1 is a diagram showing one of the panels that constitute the side portion of an assembled structure according to one embodiment of the present invention (part 1). FIG. 2 is a diagram showing one of the panels that constitute the side portion of an assembled structure according to one embodiment of the present invention (part 2). FIG. 1 shows a panel that forms the top portion of an assembled structure according to one embodiment of the present invention. 1A to 1C are diagrams showing a procedure for assembling an assembly structure according to one embodiment of the present invention. FIG. 10 is a perspective view showing a procedure for joining panels together.

One embodiment of the present invention (hereinafter referred to as this embodiment) will be described in detail below with reference to the accompanying drawings. Note that the embodiment described below is merely an example provided to facilitate understanding of the present invention and is not intended to limit the present invention. In other words, the present invention may be modified or improved from the embodiment described below without departing from the spirit of the present invention. Furthermore, the present invention includes equivalents thereof.

Furthermore, in this specification, the meanings of "same,""identical,""congruent,""equal,""even,""equallydivided," and "equally spaced" may include the range of error generally accepted in the technical field to which this invention belongs.
In addition, in this specification, the meanings of "perpendicular,""orthogonal," and "parallel" each include a range of error generally accepted in the field to which the present invention belongs, and may include cases where they are deviated from strictly perpendicular, orthogonal, and parallel within a range of less than a few degrees (e.g., 2 to 3 degrees).

[About structural units]
1 and 2, the assembled structure of this embodiment constitutes a structural unit 100 together with a dome-shaped structure 110. More specifically, the structural unit 100 has a plurality of dome-shaped structures 110, and the assembled structure of this embodiment is disposed between the dome-shaped structures 110 to connect the dome-shaped structures 110 together. Hereinafter, the assembled structure of this embodiment will be referred to as a connected structure 10.

In the structure unit 100, multiple dome-shaped structures 110 with the same structure are arranged, and connecting structures 10 are placed between the dome-shaped structures 110. In other words, the same structure is repeated inside the unit, allowing the same equipment (for example, a camera that takes pictures inside the structure) to be installed in multiple locations in the same manner.

Before explaining the connected structure 10, the general configuration of the dome-shaped structure 110 will be explained. As shown in Figure 3, the dome-shaped structure 110 is constructed by placing a hemispherical upper dome 114 on top of a cylindrical lower dome 112, and can accommodate people, animals, objects, etc. inside. An opening (hereinafter referred to as the dome-side opening 116) is provided in the lower dome 112, and access to the interior of the dome-shaped structure 110 can be achieved through the dome-side opening 116.

The dome-side openings 116 are provided at approximately 90-degree intervals around the circumference of the dome lower portion 112. In this embodiment, the shape of each dome-side opening 116 is quadrilateral, more specifically, a square defined by a diagonal line extending vertically and a diagonal line extending horizontally. However, the shape of the dome-side openings 116 is not limited to a square, and may be a quadrilateral other than a square, a polygon other than a square, or a circle or ellipse.

Next, a schematic configuration of the connected structure 10 will be described. In the following, when describing the position of each part of the connected structure 10, three mutually orthogonal directions will be defined, and will be referred to as the height direction, front-rear direction, and width direction of the connected structure 10, respectively. Here, the height direction is the direction that coincides with the vertical direction perpendicular to the installation surface of the connected structure 10 when the connected structure 10 is used on the ground. Furthermore, the front-rear direction is orthogonal to the height direction, and the width direction is orthogonal to both the height direction and the front-rear direction.
In the following, when explaining the positions of each part of the connected structure 10, unless otherwise specified, the explanation will be given assuming a case in which the connected structure 10 is in use.

The connected structure 10 has the external appearance shown in Figures 4 to 8, and as shown in Figure 9, has a hollow space S inside. Furthermore, as shown in Figures 4 and 5, the connected structure 10 has openings 12 at both ends in the front-to-rear direction of the connected structure 10, through which access to the hollow space S is possible. In this embodiment, the shape of the opening 12 is the same as the dome-side opening 116, i.e., a square defined by a diagonal line extending vertically and a diagonal line extending horizontally. However, the shape of the dome-side opening 116 may be any shape other than a square, such as a rectangle or a circle, as long as it corresponds to the shape of the dome-side opening 116.

As described above, the connecting structure 10 is placed between the dome-shaped structures 110 to connect the dome-shaped structures 110 together. In this case, the connecting structure 10 is placed so that each opening 12 is adjacent to the dome-side opening 116. This allows the cavity S to communicate with the interior of the dome-shaped structures 110; specifically, the cavity S forms a communication passage between the dome-shaped structures 110. In other words, by passing through the cavity S in the fore-and-aft direction of the connecting structure 10, it is possible to travel between the dome-shaped structures 110.

Here, an imaginary line connecting the center of one dome-side opening 116 in the dome-shaped structure 110 (more specifically, the intersection of the diagonals of the square formed by the outer edges of the dome-side opening 116) to the center of the opposite dome-side opening 116 extends horizontally in a straight line. Furthermore, in the connected structure 10, an imaginary line connecting the center of the opening 12 provided at the front end (more specifically, the intersection of the diagonals of the square formed by the outer edges of the opening 12) to the center of the opening 12 provided at the rear end extends horizontally in a straight line. This improves the expandability of the connected structure 10 and allows the connected structures 10 to be efficiently arranged in the structural unit 100.

Specifically, when the connecting structure 10 is connected to the dome-shaped structures 110, the imaginary line connecting the centers of the dome-side openings 116 and the imaginary line connecting the centers of the openings 12 are aligned in a straight line. By satisfying this relationship, it is possible to line up multiple dome-shaped structures 110 in each of two mutually perpendicular directions and connect the dome-shaped structures 110 with the connecting structures 10. In other words, in the structural unit 100, the dome-shaped structures 110 and the connecting structures 10 can be arranged in a square lattice pattern. As a result, the structural units 100 can be arranged more compactly than, for example, when the structural units 100 and the connecting structures 10 are arranged in a diagonal lattice pattern.

[About the structure of the connecting structure]
The structure of the connection structure 10 will be described with reference to FIGS.
The connected structure 10 is assembled using a plurality of panels, which will be described later, and includes a main body 14 and a top portion 16, as shown in Figures 4 to 8. The configurations of the main body 14 and the top portion 16 will be described below.

(Main body)
5 to 8, the main body 14 is a part having a shape that is a semiregular polyhedron, more specifically, a modified cuboctahedron. Strictly speaking, the main body 14 has a structure in which eight equilateral triangular parts and six square parts are arranged symmetrically in the front-to-rear, width, and height directions (hereinafter simply referred to as the front-to-rear, width, and height directions) of the connected structure 10. In other words, the connected structure 10 (particularly the main body 14) is symmetrical in each of the front-to-rear, left-to-right, and height directions, and is a well-balanced, highly stable structure.

To explain the configuration of the main body 14 in more detail, the main body 14 has side portions 21 and 22 shown in Figures 5 and 6. The side portions 21 and 22 are the parts that form the sides of the main body 14 when viewed from the front, with the front-to-back direction or width direction being the front direction. Hereinafter, the side portion when viewed from the front in the front-to-back direction will be referred to as the first side portion 21, and the side portion when viewed from the front in the width direction will be referred to as the second side portion 22.

The first side portions 21 located on both sides in the front-to-rear direction are symmetrical to each other between the front and rear sides, and each first side portion 21 has four equilateral triangular faces 23 that are congruent in shape, as shown in Figures 4 and 5. In each first side portion 21, the four equilateral triangular faces 23 are arranged such that a quadrangle with four equal sides consisting of one side of each of the four equilateral triangular faces 23 appears on the first side portion 21. When viewed from the front, this quadrangle is a square R with two diagonals extending along the height and width directions, and more specifically, corresponds to the opening 12 mentioned above.

As described above, in the first side portion 21, each of the four equilateral triangular faces 23 shares one side with the above-mentioned square R; in other words, one side of each of the four equilateral triangular faces 23 forms the four outer edges of the square-shaped opening 12. This results in the first side portion 21 being symmetrical in the height and width directions (more specifically, being symmetrical about the center line of the main body portion 14 in each direction).

The second side portions 22 located on both sides in the width direction are symmetrical between the left side (one end) and the right side (the other end), and each second side portion 22 has four equilateral triangular faces 23 that are congruent in shape, as shown in FIG. 6. In each second side portion 22, the four equilateral triangular faces 23 are arranged such that a quadrangle with four equal sides, consisting of one side of each of the four equilateral triangular faces 23, appears on the second side portion 22. This quadrangle is a square R in front view, with two diagonals extending along the height and width directions. As shown in FIG. 6, an isosceles triangular face 24 protrudes outward from each of the four sides of this square R. The four isosceles triangular faces 24 are congruent, with their vertices converging at a single point.

As described above, in the second side portion 22, each of the four equilateral triangular faces 23 shares one side with the square R; in other words, one side of each of the four equilateral triangular faces 23 forms the four outer edges of the square R. Furthermore, inside the square R, four isosceles triangular faces 24 of congruent shape are arranged, sharing a vertex. This gives the second side portion 22 a symmetrical configuration in the height direction and the front-to-rear direction (more specifically, a linearly symmetrical configuration with respect to the center line of the main body portion 14 in each direction).

In this embodiment, the equilateral triangular faces 23 included in the first side face portion 21 are shared as equilateral triangular faces 23 included in the second side face portion 22. Specifically, for example, of the four equilateral triangular faces 23 included in each of the front and rear first side face portions 21, two faces (four faces in total) located at one end in the width direction (left side) are shared as the four equilateral triangular faces 23 included in the second side face portion 22 at one end in the width direction. Similarly, of the four equilateral triangular faces 23 included in each of the front and rear first side face portions 21, two faces (four faces in total) located at the other end in the width direction (right side) are shared as the four equilateral triangular faces 23 included in the second side face portion 22 at the other end in the width direction.

Furthermore, the upper surface 25 of the main body 14 when the connected structure 10 is viewed from directly above and the lower surface 26 of the main body 14 when the connected structure 10 is viewed from directly below are symmetrical to each other, and as shown in Figures 7 and 8, each has four equilateral triangular faces 23 of congruent shape. In each of the upper surface 25 and the lower surface 26, the four equilateral triangular faces 23 are arranged such that a quadrangle with four equal sides, consisting of one side of each of the four equilateral triangular faces 23, appears on the upper surface 25/lower surface 26. This quadrangle is a square R with two diagonals extending along the front-to-rear and width directions, and is more specifically an opening. In other words, a quadrangular opening with four equal sides is provided at the lower end of the main body 14 (i.e., the lower end of the connected structure 10) and the upper end of the main body 14.
In the following description, the opening provided at the lower end of the main body 14 will be referred to as a lower end opening 18 .

As described above, on the upper surface 25 and lower surface 26 of the main body 14, each of the four equilateral triangular surfaces 23 shares one side with the square R described above; in other words, one side of each of the four equilateral triangular surfaces 23 forms the four outer edges of the square-shaped opening. This results in the upper surface 25 and lower surface 26 each being symmetrical in the front-to-rear and width directions (more specifically, being symmetrical about the center line of the main body 14 in each direction).

Furthermore, the provision of a bottom opening 18 on the underside 26 of the main body 14 makes the bottom 26 less susceptible to dirt and damage, eliminating the need for repairs or maintenance due to dirt, damage, etc., making the connected structure 10 easier to manage. Furthermore, electrical wiring and ventilation paths can be drawn into the connected structure 10 through the bottom opening 18, allowing electrical equipment, ventilation devices, etc. to be used within the connected structure 10. Furthermore, the provision of the bottom opening 18 allows the connected structure 10 to be placed on top of equipment (e.g., a toilet) installed above or below ground, allowing the equipment to be used inside the connected structure 10 (inside the hollow portion S).

In addition, in this embodiment, the equilateral triangular faces 23 included in the first side surface portion 21 are shared as equilateral triangular faces 23 included in the upper surface portion 25 and the lower surface portion 26. To be more specific, for example, of the four equilateral triangular faces 23 included in each of the front and rear first side surface portions 21, the two faces located on the upper side in the height direction (a total of four faces) are shared as the four equilateral triangular faces 23 included in the upper surface portion 25. Similarly, of the four equilateral triangular faces 23 included in each of the front and rear first side surface portions 21, the two faces located on the lower side in the height direction (a total of four faces) are shared as the four equilateral triangular faces 23 included in the lower surface portion 26.

Furthermore, the upper ends of the two first side surface portions 21 and the upper ends of the two second side surface portions 22 all correspond to the upper end of the main body portion 14. In other words, when the connected structure 10 is viewed from directly above, the upper edge of one first side surface portion 21 and the upper edge of the other first side surface portion 21 form the outer edge of a quadrangle (strictly speaking, a square R) with equal sides that appears on the top surface portion 25. Similarly, the upper edge of one second side surface portion 22 and the upper edge of the other second side surface portion 22 form the outer edge of the above-mentioned quadrangle (square R).

Furthermore, the lower ends of the two first side surface portions 21 and the lower ends of the two second side surface portions 22 all correspond to the lower end of the main body portion 14. In other words, when the connected structure 10 is viewed from directly below, the lower edge of one first side surface portion 21 and the lower edge of the other first side surface portion 21 form the outer edge of a quadrangle (strictly speaking, a square R) with equal sides that appears on the underside portion 26. Similarly, the lower edge of one second side surface portion 22 and the lower edge of the other second side surface portion 22 form the outer edge of the above-mentioned quadrangle (square R).

Furthermore, as shown in Figures 4, 5, 7, 8, and 10, each of the two first side surface portions 21 has an extension portion 27 that extends outward in the front-to-rear direction. In other words, the extension portion 27 provided on the front first side surface portion 21 extends forward, and the extension portion 27 provided on the rear first side surface portion 21 extends rearward.

The extension portions 27 are flap-shaped fragments that extend from each side of the outer edge of the opening 12, i.e., from each of the four sides of the rectangle (more specifically, square R) that appears on the first side surface portion 21. In other words, each first side surface portion 21 has four extension portions 27 arranged along the outer edge of the opening 12, and the opening 12 is surrounded by the four extension portions 27. The four extension portions 27 are separated from one another; in other words, a gap c is formed between two adjacent extension portions 27, as shown in Figure 10. This allows each extension portion 27 to rotate around each side of the outer edge of the opening 12, which is its base end. This configuration facilitates connection of the connecting structure 10 to the dome-side opening 116 and improves connection accuracy.

As shown in FIG. 10, each of the two first side surface portions 21 has a folded portion 28 that is continuous with the tip of the extension portion 27 and folded inward in the front-to-rear direction. In other words, the folded portion 28 on the front first side surface portion 21 is folded back toward the rear, and the folded portion 28 on the rear first side surface portion 21 is folded back toward the front.

In each first side surface portion 21, a folded portion 28 is provided for each extending portion 27. In other words, each first side surface portion 21 has the same number of folded portions 28 as the extending portions 27, i.e., four. The four folded portions 28 are arranged along the outer edge of the opening 12 to surround the opening 12. Each folded portion 28 can rotate around the boundary between the folded portion 28 and the extending portion 27, i.e., the tip of the extending portion 27. In this embodiment, as described above, the four extending portions 27 are separated from one another and slits c are formed between the extending portions 27. Therefore, the four folded portions 28 are also separated from one another and slits e are formed between two adjacent folded portions 28. This allows each folded portion 28 to rotate so that it can be easily folded. In particular, each folded portion 28 engages with the edge of the dome-side opening 116 due to its elasticity when folded outward, making it easier to connect the connecting structure 10 to the dome-side opening 116 and further improving connection accuracy.

As shown in FIG. 11 , when connecting the connecting structure 10 to the dome-shaped structure 110, the four extensions 27 and four folds 28 on the first side surface 21 facing the dome-side opening 116 are inserted into the dome-side opening 116. When the extensions 27 and folds 28 are inserted into the dome-side opening 116, the folds 28 engage with the edge region of the dome-side opening 116 on the inner wall surface of the dome-shaped structure 110. This makes it difficult for the extensions 27 and folds 28 to come out of the dome-side opening 116, maintaining a good connection between the connecting structure 10 and the dome-shaped structure 110. Furthermore, even if there is some error in the dimensions of the dome-side opening 116, the elasticity of the folds 28 can accommodate this error, making it even easier to connect the connecting structure 10 to the dome-shaped structure 110.

On the other hand, if gaps are formed between the extension portions 27 and between the folded portions 28, the strength of the main body portion 14 will be reduced compared to when these gaps are not formed, and there is a risk that the main body portion 14 will tear at the gaps. For this reason, in this embodiment, as shown in Figures 4, 6, 7, and 8, mounting pieces 30 are provided as reinforcing components. The mounting pieces 30 are attached to each of the two adjacent folded portions 28, straddling the two adjacent folded portions 28.

As shown in Figures 12A and 12B, the attachment piece 30 is symmetrical about the center line, with each of the two symmetrical portions being an arrow feather-shaped sheet portion 31. The attachment piece 30 is positioned so that its center line faces the gap between the folded-back portions 28, and each sheet portion 31 is attached folded in half. Specifically, as shown in Figure 13A, one sheet portion 31 sandwiches one of two adjacent folded-back portions 28, and the other sheet portion 31 sandwiches the other folded-back portion 28. More specifically, as shown in Figures 13A and 13B, approximately half of the folded sheet portion 31 is inserted between the extension portion 27 and the folded-back portion 28, and the remaining half is adjacent to the folded-back portion 28 on the outside of the folded-back portion 28.

Furthermore, as shown in Figure 13A, a plurality of insertion protrusions 32 are provided on the outer edge of the sheet portion 31, in a portion adjacent to the folded portion 28 on the outside. These insertion protrusions 32 are inserted into insertion holes 29 formed at the boundary between the extension portion 27 and the folded portion 28, thereby attaching the attachment piece 30 to the folded portion 28.

In this embodiment, each first side surface portion 21 has four pairs of adjacent folded portions 28, and attachment pieces 30 are attached to all four pairs. That is, four attachment pieces 30 are provided on each first side surface portion 21. Note that in this embodiment, two types of attachment pieces 30 shown in Figures 12A and 12B are used, and the size (width) of the sheet portion 31 differs depending on the type. As mentioned above, four attachment pieces 30 are provided on each first side surface portion 21, but it is preferable that two of the four attachment pieces 30 located in opposing positions be the same type of attachment piece 30 from the perspective of balance.

As described above, by attaching the mounting piece 30 across two adjacent folded sections 28, it is possible to prevent a decrease in strength due to the gap between the folded sections 28 and also to prevent the folded sections 28 from flapping due to their folded shape. This makes the folded shapes of the folded sections 28 approximately uniform, which in turn makes it easier to connect the connecting structure 10 to the dome-side opening 116 and further improves connection accuracy.

Furthermore, when the insertion protrusion 32 is inserted into the insertion hole 29 while the folded sheet portion 31 is sandwiched between the folded portion 28, a moment (indicated by an arrow in the figure) acts to rotate the folded portion 28 around the position of the insertion hole 29 as a fulcrum, as shown in FIG. 13B . This moment causes the folded portion 28 to rotate inward (away from the extending portion 27). This allows the two adjacent folded portions 28 to approach each other and abut against each other. Accordingly, the two adjacent extending portions 27 also approach each other. As a result, when the connected structure 10 is installed, the forces due to the weights of the folded portion 28 and the extending portion 27 are canceled out at the abutting points. This improves the self-sustainability (post-assembly stability) of the first side surface portion 21 compared to when the two adjacent folded portions 28 are open outward (toward the extending portion 27) without abutting against each other.

In addition, in this embodiment, to optimally generate the moment force, as shown in Figures 12A and 12B, a contact protrusion 33 protrudes from the end of each sheet portion 31 of the attachment piece 30 opposite the end where the insertion protrusion 32 is provided. When the folded sheet portion 31 is sandwiched between the folded portion 28, the contact protrusion 33 abuts against the pivot point of the folded portion 28 from the inside of the folded portion 28 (see Figure 13B). In other words, the distance from the folding position of the sheet portion 31 to the tip of the contact protrusion 33 (indicated by the symbol t in Figures 12A and 12B) may be equal to or less than the width of the folded portion 28. However, to ensure that the attachment piece 30 securely holds the folded portion 28, it is preferable that the distance be approximately equal to the width of the folded portion 28. Note that the width of the folded portion 28 is the length of the folded portion 28 in a direction intersecting the boundary between the folded portion 28 and the extension portion 27.

(top)
The top portion 16 is a cone-shaped portion located at the upper end of the connected structure 10, and is formed by combining a plurality of panels. As shown in Figure 4, the top portion 16 is placed on the upper ends of the first side surface portions 21 located on both sides in the front-to-rear direction, in other words, on the upper ends of the second side surface portions 22 located on both sides in the width direction.

By providing the top portion 16, the interior of the connected structure 10, i.e., the hollow portion S, is expanded in the height direction. This allows the storage space within the connected structure 10 to be expanded. Furthermore, for example, when a person moves forward and backward within the hollow portion S, they no longer need to bend their body, or the degree to which they need to bend can be reduced, making it easier to move within the hollow portion S.

In this embodiment, the top portion 16 has a quadrangular pyramid shape as shown in Figures 4 and 7 and has four side surfaces (hereinafter referred to as top portion side surfaces 35). Each of the four top portion side surfaces 35 is an isosceles triangle, and the base of each top portion side surface 35 forms the lower edge of the top portion 16. Specifically, as shown in Figure 7, the bases of the four top portion side surfaces 35 form the outer edge of a quadrangle with equal sides, more specifically, a square R. This square R is congruent with the square R formed by the upper end opening of the main body portion 14. In other words, when the top portion 16 is placed on the main body portion 14, the lower end of the top portion 16 coincides with the upper end of the main body portion 14, as shown in Figure 4.

As shown in FIG. 9 , a rib 36 protrudes from the inner wall surface of the apex portion 16 toward the inside of the apex portion 16. This rib 36 is formed by connecting the side joint pieces 73 of the two panels (more specifically, the apex panel 53) that make up the apex portion 16 when they are combined. In this embodiment, the rib 36, i.e., the connected side joint pieces 73, extend in the width direction as shown in FIG. 9 and in a direction that intersects (more specifically, is perpendicular to) the front-to-rear direction, which is the direction of movement when passing through the connected structure 10. Because the extension direction of the rib 36 intersects the front-to-rear direction in this way, when moving in the front-to-rear direction within the connected structure 10, the rib 36 passes under the rib 36 only when passing directly below the apex of the apex portion 16, thereby minimizing the effect of the rib 36 on movement within the connected structure 10. This minimizes the reduction in space required for movement within the connected structure 10.

[Partition section]
In this embodiment, as shown in Fig. 11, a partition section 40 can be used as an accessory to the connected structure 10. The use and configuration of the partition section 40 will be described below with reference to Figs. 11 and 14-15.

The partition section 40 is used to block the opening 12 within the connected structure 10, and in this embodiment, as shown in Figure 14, is composed of an upper section 41 having a generally triangular prism shape and a lower section 42 that is symmetrical to the upper section 41, arranged vertically. However, this is not limited to this, and the partition section 40 may be composed of either the upper section 41 or the lower section 42 alone. In this case, as long as the height of the partition section 40 is high enough to block up to half of the opening 12 in the vertical direction, it is possible to achieve both ventilation through the opening 12 and heat retention within the connected structure 10.

The partition 40 has an isosceles trapezoidal shape in plan view (see FIG. 11) and a triangular shape in side view (see FIG. 15). As shown in FIGS. 14 and 15, the partition 40 has a front surface 43 that is inclined in the height direction and a back surface 44 that is perpendicular to the ground. The front surface 43 is the surface facing the outside of the connected structure 10, and the back surface 44 is the surface on the opposite side. As shown in FIG. 11, the width (length in the width direction) of the back surface 44 is wider than the width of the front surface 43. In other words, the partition 40 has a tapered shape in plan view, with the width increasing toward the back surface 44. The width of the partition 40 (strictly speaking, the width of the back surface 44) is wider than the width of the opening 12, and more specifically, shorter than the length of the diagonal extending in the width direction of the square formed by the opening 12.

As shown in Figures 11 and 15, the partition unit 40 configured as described above is placed near the opening 12 within the connected structure 10, with the front surface 43 or back surface 44 of the partition unit 40 facing the opening 12. In this case, the partition unit 40 placed within the connected structure 10 may be placed close to the opening 12. In this case, by bringing the end of the partition unit 40 into contact with the edge region of the opening 12 on the inner wall surface of the connected structure 10, the partition unit 40 can block outside air flowing into the connected structure 10 through the opening 12. This allows the cavity S within the connected structure 10 to be kept warm. In addition, the condition of the cavity S is made difficult to see (shielded) from outside the connected structure 10, protecting the privacy of people inside the cavity S.

Alternatively, the partition 40 may be pushed into the connected structure 10 from outside the connected structure 10 through the opening 12. In this case, it is possible to block outside air and shield the condition of the cavity S, and it is also possible to push the partition 40 from the rear surface 44 side to move it out of the connected structure 10 and open the opening 12. This makes it possible to secure a route for evacuation to the outside of the connected structure 10 through the opening 12 in the event of an emergency.
When the partition portion 40 is pushed into the connected structure 10 from the outside of the connected structure 10, the partition portion 40 is brought close to the opening 12 from the rear surface 44 side.

In this embodiment, the surface 43 of the partition section 40 facing the outside of the connected structure 10 is an inclined surface, so even if floating particles in the outside air adhere to the surface 43, the particles can be discharged to the outside of the connected structure 10.

[Panels that make up the connecting structure]
Next, the panels that make up the connected structure 10 will be described.
Each of the main body 14 and top portion 16 of the interconnected structure 10 is constructed by combining multiple panels. In this embodiment, each panel is made of cardboard and has a laminated structure in which a corrugated paper core is sandwiched between two sheets of flat paper (liners). The cardboard that makes up the panel may be of any quality, and various coatings may be applied to the surface of the paper.

The main body 14 is constructed by combining eight panels, with four of the eight panels forming one first side surface 21 and the remaining four forming the other first side surface 21. The main body 14 is then assembled by joining two first side surface portions 21 together. In this embodiment, two second side surface portions 22 are assembled by joining the first side surface portions 21 together, and the top surface portion 25 and bottom surface portion 26 of the main body 14 are also assembled. Each of the two second side surface portions 22 and each of the top surface portion 25 and bottom surface portion 26 of the main body 14 are each constructed from four panels.

The four panels constituting each first side surface portion 21 include two first main body panels 51 shown in Fig. 16 and two second main body panels 52 shown in Fig. 17. As shown in Figs. 16 and 17, the first main body panels 51 and the second main body panels 52 are mirror images of each other.
In addition, the four panels that constitute each second side portion 22, and the four panels that constitute each of the upper surface portion 25 and lower surface portion 26 of the main body portion 14, include two first main body portion panels 51 and two second main body portion panels 52, similar to the first side portion 21.

As described above, the eight panels that make up the main body 14 are congruent or mirror-image in shape, making handling and management (including storage) of the panels easy. Furthermore, because the panels are congruent or mirror-image in shape, when combining the panels, the same process can be repeated, making it easy to assemble the main body 14.

The top portion 16 is constructed by combining two top panels 53, as shown in Figure 18. The two top panels 53 are congruent with each other. Because the two panels that make up the top portion 16 are congruent in this way, handling and management of the panels is easy, and the top portion 16 can be easily assembled.

Next, we will explain the planar shapes of the panels that make up the main body 14 and the top 16. Here, the planar shape of the panels refers to the external shape of the panel alone when viewed from directly above in an unfolded state, and is different from the shape of the panel when viewed in an assembled state with the main body 14 or top 16.

(First body panel and second body panel)
As shown in Figure 16, the first main body panel 51 has an isosceles triangular first portion 54, an equilateral triangular second portion 55, a generally trapezoidal third portion 56, and a rectangular fourth portion 57. The first portion 54 forms an isosceles triangular surface 24 when the main body 14 is assembled. The second portion 55 is continuous with the first portion 54 and shares one side with the base of the isosceles triangle formed by the first portion 54, thereby forming an equilateral triangular surface 23 when the main body 14 is assembled. Also, as shown in Figure 16, a first fold line L1 is formed at the boundary between the first portion 54 and the second portion 55, i.e., at the location corresponding to the shared side.

The third portion 56 is continuous with the second portion 55 via one side of the equilateral triangle formed by the second portion 55, and forms the extension portion 27 when the main body portion 14 is assembled. Also, as shown in FIG. 16, a second fold line L2 is formed at the boundary between the second portion 55 and the third portion 56. The first fold line L1 and the second fold line L2 correspond to the "fold line" in this invention.

The fourth portion 57 is continuous with the third portion 56 on the opposite side from the second portion 55, and forms the folded portion 28 when the main body 14 is assembled. As shown in FIG. 16, a third fold line L3 is formed at the boundary between the third portion 56 and the fourth portion 57. Multiple notches that form the aforementioned insertion holes 29 are also provided at regular intervals on the third fold line L3.

The first fold line L1, second fold line L2, and third fold line L3 are each formed so as to intersect with the extension direction of the grain d, which is a corrugated paper grain formed in the core of the laminated cardboard structure that constitutes the first main panel 51. The extension direction of the grain d is the direction in which the peaks and valleys of the core contained in the cardboard continue, and is the extension direction of the straight line shown inside the dashed circle in Figure 16. Because each fold line intersects with the extension direction of the grain d, an appropriate restoring force is generated when the first main panel 51 is folded at each fold line, and the first main panel 51 can be folded along each fold line. In addition, the third fold line L3 has multiple notches that form insertion holes 29, allowing the insertion protrusions 32 of the mounting pieces 30 to be inserted into the insertion holes 29.

The first joining piece 58 is a rectangular fragment extending from one of the two outer edges of the first portion 54, other than the edge shared with the second portion 55. The second joining piece 59 is a triangular fragment extending from the other of the two outer edges of the first portion 54, other than the edge shared with the second portion 55. The third joining piece 60 is a triangular fragment extending from one of the three sides of the equilateral triangle formed by the second portion 55, which is located at a position different from the first fold line L1 and the second fold line L2.

Each of the first joining piece 58, second joining piece 59, and third joining piece 60 can be folded along a fourth fold line L4 formed at the base end position of each joining piece. Furthermore, as shown in FIG. 16, each joining piece is provided with a first push-in portion 61, an alignment hole 62, and a fastening hole 63. The first push-in portion 61 is the portion that is pushed in when joining the first body panel 51 and the second body panel 52. It extends from the base end, and the width of its tip portion is longer than the width of the remaining portion (base end). Furthermore, the first push-in portion 61 is defined by perforations formed along its outer edge excluding the base end, and can be folded at the base end.

The alignment hole 62 is a hole for aligning the panel positions when joining the first body panel 51 and the second body panel 52, and is provided at the tip of the first push-in portion 61. The fastening hole 63 is a hole for fastening the joining pieces together with a fastener such as an insulation lock when joining the first body panel 51 and the second body panel 52, and is provided, for example, at the end of each joining piece in the extension direction.

As shown in FIG. 17, the second body panel 52 has a configuration similar to that of the first body panel 51, except that it has a second push-in portion 64 instead of the first push-in portion 61. The second push-in portion 64 is a portion that is pushed in together with the first push-in portion 61 while overlapping the first push-in portion 61 when joining the first body panel 51 and the second body panel 52, and extends from the base end and has a generally rectangular shape. The second push-in portion 64 is defined by perforations formed along its outer edge excluding the base end, and can be folded at the base end.

In this embodiment, two of the first main body panels 51 and two of the second main body panels 52 are used, making a total of four panels that form the first side surface portion 21, and four of the second side surface portion 22. In addition, each of the upper surface portion 25 and the lower surface portion 26 is also made up of the four panels.
In this embodiment, the first portion 54, the second portion 55, the third portion 56, and the fourth portion 57 of each of the four panels are congruent between the panels. Also, the lengths of the first folding line L1, the second folding line L2, and the third folding line L3 formed on each of the four panels are equal between the panels.

(Top panel)
18, the top panel 53 has two main surface portions 71, and a lower joining piece 72 and a side joining piece 73 extending from the outer edge of each main surface portion 71. The main surface portion 71 is an isosceles polygonal portion and forms the top side surface 35 when the top portion 16 is assembled. The two main surface portions 71 are continuous so as to share one side other than the base, and a fifth fold line L5 is formed at the boundary between the main surface portions 71, i.e., at the location corresponding to the shared side.

The lower joining piece 72 is a triangular piece extending from the base of the outer edge of the isosceles triangle-shaped main surface portion 71. The lower joining piece 72 extending from one of the two main surface portions 71 has a first pressed-in portion 61, an alignment hole 62, and a fastening hole 63, as shown in FIG. 18. The lower joining piece 72 extending from the other main surface portion 71 has a second pressed-in portion 64, an alignment hole 62, and a fastening hole 63, as shown in FIG. 18.

The side joint pieces 73 are rectangular fragments extending from the outer edges of the isosceles triangle-shaped main surface portions 71, except for the base. The side joint piece 73 extending from one of the two main surface portions 71 has a first indentation 61, alignment holes 62, and fastening holes 63, as shown in FIG. 18. The side joint piece 73 extending from the other main surface portion 71 has a second indentation 64, alignment holes 62, and fastening holes 63, as shown in FIG. 18.

Furthermore, each of the lower joint piece 72 and the side joint piece 73 can be bent at a sixth bending line L6 formed at the base end position of each piece.

In this embodiment, the top portion 16 is formed by combining two top panels 53. Furthermore, the two main surface portions 71 of each of the two top panels 53, i.e., a total of four main surface portions 71, are congruent with each other.

[Assembly procedure for the connected structure]
Next, the procedure for assembling the connection structure 10 will be described with reference to FIGS.

First, four panels consisting of two first body panels 51 and two second body panels 52 are prepared. As shown in the leftmost drawing in the top row of Figure 19, each panel is folded in a mountain fold along the first fold line L1 at an obtuse angle. Each panel is then folded in a valley fold along the second fold line L2 so that the third portion 56 extends in a direction intersecting with the second portion 55. Each panel is then folded in a mountain fold along the third fold line L3 so that the fourth portion 57 is folded back toward the third portion 56. Furthermore, each of the first joining piece 58, second joining piece 59, and third joining piece 60 provided on each panel is folded along the fourth fold line L4. As a result, each of the first body panel 51 and second body panel 52 becomes a panel as shown in the second drawing from the left in the top row of Figure 19.

Next, the first body panel 51 and the second body panel 52 folded in the above manner are arranged side by side, as shown in the third diagram from the left in the top row of Figure 19. Then, as shown in the fourth diagram from the left in the top row of Figure 19, the attachment piece 30 is attached to the fourth portion 57 (i.e., the folded portion 28) of each panel. Specifically, the two sheet portions 31 of the attachment piece 30 are each folded in half, and the fourth portion 57 of the first body panel 51 is sandwiched between one of the sheet portions 31. The fourth portion 57 of the second body panel 52 is also sandwiched between the other sheet portion 31. Then, the insertion protrusions 32 provided on the outer edges of each sheet portion 31 are inserted into the notched insertion holes 29 formed at the boundary between the fourth portion 57 and the third portion 56 (i.e., the third fold line L3).
In this manner, the mounting piece 30 is attached across the fourth portion 57 of each of the first main body panel 51 and the second main body panel 52. This connects the first main body panel 51 and the second main body panel 52, which are arranged side by side.

By repeating the above steps, two sets of panel assemblies 50 are created, each consisting of a first main body panel 51 and a second main body panel 52, as shown in the rightmost diagram in the top row of Figure 19. Then, as shown in the same figure, the two sets of panel assemblies 50 are lined up one above the other and joined together.

When joining panel assemblies 50 together, the second joining piece 59 of the first main body panel 51 included in one panel assembly 50 and the second joining piece 59 of the second main body panel 52 included in the other panel assembly 50 are overlapped so that their outer edges coincide. By overlapping the second joining pieces 59 so that the alignment holes 62 provided in each second joining piece 59 align, each second joining piece 59 is correctly positioned, and one second joining piece 59 properly faces the other second joining piece 59.

Then, with the second joint pieces 59 overlapping each other, the first push-in portion 61 on one of the second joint pieces 59 is pushed toward the other second joint piece 59. As a result, as shown in FIG. 20 , the first push-in portion 61 bends together with the second push-in portion 64 and enters the hole formed by the second push-in portion 64 being pushed aside. When the first push-in portion 61 is completely inserted into this hole, the tip of the first push-in portion 61 engages with the edge of the hole, as shown in FIG. 20 . By performing this pushing operation of the first joint piece 58 on all of the multiple first push-in portions 61 on the second joint pieces 59, the second joint pieces 59 are joined together. This joins two panel assemblies 50 arranged vertically.

As described above, in this embodiment, the second joining pieces 59 can be easily connected together by overlapping the second joining pieces 59 and pressing the first push-in portion 61 and the second push-in portion 64. In order to more firmly connect the second joining pieces 59 together, a fastener such as an insulation lock can be passed through the fastening holes 63 provided in each second joining piece 59 and the second joining pieces 59 can be fastened together using the fastener.

After connecting the two panel assemblies 50 using the above procedure, as shown in the rightmost diagram in the bottom row of Figure 19, an attachment piece 30 is attached to the fourth portion 57 (i.e., the folded portion 28) of each panel included in each panel assembly 50. Specifically, in the same manner as above, the attachment piece 30 is attached so that it spans two vertically adjacent fourth portions 57.

One first side surface portion 21 is created using the above steps, and another first side surface portion 21 is created by repeating the same steps. Then, as shown in the second image from the right in the bottom row of Figure 19, the two created first side surface portions 21 are lined up front and back and joined together.

When joining the first side sections 21 together, the first joining piece 58 of the first main body panel 51 included in the front first side section 21 and the first joining piece 58 of the second main body panel 52 included in the rear first side section 21 are overlapped so that their outer edges coincide. Similarly, the first joining piece 58 of the first main body panel 51 included in the rear first side section 21 and the first joining piece 58 of the second main body panel 52 included in the front first side section 21 are overlapped so that their outer edges coincide. At this time, by overlapping the first joining pieces 58 so that the alignment holes 62 provided in each first joining piece 58 align, each first joining piece 58 is correctly positioned, and one first joining piece 58 properly faces the other first joining piece 58.

Then, with the first joining pieces 58 overlapping each other, the first push-in portion 61 on one of the first joining pieces 58 is pushed into the other first joining piece 58. This connects the first joining pieces 58 together and joins them to the first side surface portion 21 in the same manner as above. To more firmly connect the first joining pieces 58 together, a fastener such as an insulation lock may be passed through the fastening holes 63 on each first joining piece 58 and used to fasten the first joining pieces 58 together.

When the series of steps described above are completed, the main body 14 is completed, as shown in the leftmost diagram in the bottom row of Figure 19. In the completed main body 14, the four panels (two first main body panels 51 and two second main body panels 52) that make up the first side surface portions 21 on both sides in the front-to-rear direction are combined in such a way that a rectangle with four sides defined by the second fold line L2 of each panel appears on the first side surface portion 21. This rectangle has four equal sides, and more specifically, is a square R when viewed from the front.

Furthermore, in each of the second side sections 22 provided on both sides in the width direction, the four panels (two first main body panels 51 and two second main body panels 52) that make up the second side section 22 are combined in a manner that a rectangle with the first fold line L1 of each panel as its four sides appears on the second side section 22. This rectangle has four equal sides, and more specifically, is a square R when viewed from the front.

After the main body 14 is completed, the top portion 16 is assembled onto the main body 14. Specifically, two top panels 53 are prepared, and as shown in FIG. 19, each top panel 53 is folded in a mountain fold along the fifth fold line L5. At this time, the top panel 53 is folded so that the folding angle when viewed from directly above is approximately 90 degrees. In addition, each of the lower joining pieces 72 and side joining pieces 73 provided on each top panel 53 is folded along the sixth fold line L6.

Then, one top panel 53 folded in the above manner is placed directly above each of the two first side sections 21 of the main body 14, and the first side sections 21 and the top panel 53 are joined together. Specifically, the third joining piece 60 placed at the top end of the first side section 21 and the lower joining piece 72 of the top panel 53 are overlapped so that their outer edges coincide. By overlapping the joining pieces so that the alignment holes 62 provided in the third joining piece 60 and the lower joining piece 72 align, each joining piece is correctly positioned, and the third joining piece 60 properly faces the lower joining piece 72.

Then, with the third joint piece 60 and the lower joint piece 72 overlapping, the first push-in portion 61 on one joint piece is pushed into the other joint piece. This connects the third joint piece 60 and the lower joint piece 72 in the same manner as above, joining the first side portion 21 and the top panel 53. To more firmly connect the third joint piece 60 and the lower joint piece 72, a fastener such as an insulation lock can be passed through the fastening holes 63 on each joint piece and used to fasten the third joint piece 60 and the lower joint piece 72 together.

Thereafter, the top panel 53 joined to the front first side surface portion 21 and the top panel 53 joined to the rear first side surface portion 21 are combined (more specifically, joined together).
When combining the top panels 53, the side joint piece 73 provided on the front top panel 53 is overlapped with the side joint piece 73 provided on the rear top panel 53. At this time, by overlapping the side joint pieces 73 with each other so that the alignment holes 62 provided on each side joint piece 73 are aligned, each side joint piece 73 is correctly positioned and one first joint piece 58 is properly opposed to the other first joint piece 58.

Then, with the side joint pieces 73 overlapping each other, the first push-in portion 61 on one side joint piece 73 is pushed toward the other side joint piece 73. This connects the side joint pieces 73 in the same manner as above, joining the top panels 53 together. To more firmly connect the side joint pieces 73 together, a fastener such as an insulation lock can be passed through the fastening holes 63 on each side joint piece 73 and used to fasten the side joint pieces 73 together.

When the top panels 53 are combined using the above procedure, the top portion 16 is completed and is then placed on top of the main body portion 14 and assembled to it. Ribs 36, formed by connecting the side joint pieces 73, protrude from the inner wall surface of the completed top portion 16 toward the inside of the hollow portion S (see Figure 9). In this embodiment, because the side joint pieces 73 are joined in a line in the front-to-rear direction, the ribs 36 necessarily extend in the width direction, not in the front-to-rear direction.

Then, when the series of operations described above is completed, the connected structure 10 is completed. In this embodiment, as described above, the connected structure 10 can be assembled by combining multiple panels, making it easier to create and install the connected structure 10.

On the other hand, if the connected structure 10 is divided into multiple panels, the strength of the connected structure 10 may be reduced compared to when the connected structure 10 is constructed from a single part. In contrast, in this embodiment, the panels are joined by connecting the joining pieces provided on each panel. This allows the connected joining pieces to function as reinforcing ribs, preventing a decrease in strength. In this way, the connected structure 10 according to this embodiment combines ease of assembly with strength.

[Other embodiments]
Although the assembly structure of the present invention has been described above using specific examples, the above-described embodiment is merely an example, and other embodiments may be considered.

In the above-described embodiment, a connected structure 10 that is placed between dome-shaped structures 110 to connect the dome-shaped structures 110 and form a passageway between the dome-shaped structures 110 has been described as an example of an assembled structure of the present invention. However, the assembled structure of the present invention is not limited to a connected structure 10, and may be a structure that can be used independently, such as a dome-shaped tent.

In the above-described embodiment, the connecting structure 10 has an opening 12 in the front-to-rear direction, and the hollow portion S within the connecting structure 10 is passable in the front-to-rear direction, while both sides in the width direction are closed (closed ends). However, this is not limited to this, and the connecting structure 10 may have a configuration in which the front-to-rear and width directions are reversed from those in the above-described embodiment.

In the above-described embodiment, a rectangle having four sides that are the folding lines (more specifically, the second folding line L2) of the four panels that make up the first side surface portion 21 appears on each of the first side surface portions 21 on both sides in the front-to-rear direction. Also, in the above-described embodiment, a rectangle having four sides that are the folding lines (more specifically, the first folding line L1) of the four panels that make up the second side surface portion 22 appears on each of the second side surface portions 22 on both sides in the width direction. However, this is not limited to this, and a rectangle having four sides that are the folding lines (more specifically, the first folding line L1 or the second folding line L2) of the four panels that make up the side surface portion 21 may also appear on both side surface portions in either the front-to-rear direction or the width direction.

In the above-described embodiment, the rectangles appearing on the first side surface portion 21 and the second side surface portion 22 are squares R when viewed from the front, and more specifically, are squares with one diagonal line aligned vertically. However, the rectangles appearing on each side surface may be any rectangle with four equal sides, for example, a square with sides aligned vertically, or a rectangle other than a square, such as a rhombus.

In the above-described embodiment, an opening (lower end opening 18) is provided at the lower end of the connected structure 10, but this is not limited to this. The lower end of the connected structure 10 may be closed, and for example, the lower end, i.e., the bottom, of the connected structure 10 may be formed from a removable sheet. In this case, the bottom can be attached to suit the condition of the ground on which the connected structure 10 is installed, making the use of the connected structure 10 more comfortable.

In the above embodiment, a connected structure 10 having a cone-shaped top portion 16 attached to the upper end of the main body portion 14 was described, but this is not limited to this. The assembled structure of the present invention may also have a structure in which the top end of the main body portion 14 is closed instead of having a top portion 16 (for example, a structure in which the opening at the top end of the main body portion 14 is closed by a flat plate or the like).

In the above-described embodiment, the number of panels constituting the main body 14 is eight, and of these, the number of panels constituting one side surface portion (specifically, each of the first side surface portion 21 and the second side surface portion 22) is four. However, this is not limited to this, and the number of panels constituting a side surface portion may be one or more.
For example, each of the side sections on both sides in the front-rear or width direction may be constructed by folding in a single panel. In this case, each side section may have four congruent triangular faces (corresponding to the equilateral triangular faces 23 in the above-described embodiment), and the four triangular faces may be arranged so that a quadrangle with four equal sides appears on the side section. This allows for a symmetrical and balanced assembled structure to be realized even when each side section is constructed by folding in a single panel.

While the above-described embodiment describes two panels constituting the top portion 16, this is not limited thereto and may be any number greater than two, such as four. When combining four panels to form the top portion 16, the rib 36 is formed by overlapping two of the joining pieces (corresponding to the lateral joining pieces 73 in the above-described embodiment) provided on each panel and connecting the joining pieces together. In this case, two ribs 36 are formed that extend in different directions. For example, the extension direction of one rib 36 intersects the front-to-rear direction, and the formation direction of the other rib 36 is along the front-to-rear direction. Here, if the length by which the rib 36 protrudes from the inner wall surface of the connected structure 10 is defined as the protrusion amount of the rib 36, from the perspective of ease of movement within the connected structure 10, it is preferable that the protrusion amount of the rib 36 along the front-to-rear direction be smaller than the protrusion amount of the rib 36 intersecting the front-to-rear direction.

In the above-described embodiment, the mounting piece 30 is attached across two adjacent folded portions 28 in order to reinforce the extension portion 27 and the folded portion 28. However, this is not limited to this, and the above-described mounting piece 30 may not be attached.

In the above-described embodiment, when joining the joining pieces provided on each panel, the joining pieces are joined by pressing in the first pressing portion 61 and the second pressing portion 64 provided on the joining pieces. However, the method of joining the joining pieces is not limited to this; the joining pieces may be joined together using a fastener such as an insulation lock, or the joining pieces may be bonded together using an adhesive or the like.

10 Connected structures (assembled structures)
12 Opening 14 Main body portion 16 Top portion 18 Lower end opening (opening)
21 First side surface portion 22 Second side surface portion 23 Equilateral triangular surface (triangular surface)
24 Isosceles triangular surface 25 Upper surface portion 26 Lower surface portion 27 Extension portion 28 Folded portion 29 Insertion hole 30 Mounting piece 31 Sheet portion 32 Insertion protrusion 33 Abutment protrusion 35 Top side surface 36 Rib 40 Partition portion 41 Upper portion 42 Lower portion 43 Front surface 44 Back surface 50 Panel connection body 51 First main body panel 52 Second main body panel 53 Top panel 54 First portion 55 Second portion 56 Third portion 57 Fourth portion 58 First joining piece 59 Second joining piece 60 Third joining piece 61 First push-in portion 62 Alignment hole 63 Fastening hole 64 Second push-in portion 71 Main surface portion 72 Lower joining piece 73 Side joint piece (joint piece)
100 Structural unit 110 Dome-shaped structure 112 Dome lower part 114 Dome upper part 116 Dome side opening c Cut d Paper grain e Cut K Gap L1 First folding line (folding line)
L2 Second bending line (bending line)
L3 Third bending line L4 Fourth bending line L5 Fifth bending line L6 Sixth bending line R Square S Hollow section

Claims (14)

An assembled structure having a cavity therein,
each of the side surface portions on both sides in at least one direction of the front-rear direction of the assembled structure, which is perpendicular to the height direction of the assembled structure, and the width direction of the assembled structure, which is perpendicular to both the height direction and the front-rear direction, is formed by combining four panels;
The lengths of the folding lines of each of the four panels are equal between the panels;
An assembled structure in which, at each of the side portions, the four panels are combined in a state in which a rectangle having four sides defined by the folding lines of each of the four panels appears at the side portion. The assembled structure described in claim 1, wherein, when the assembled structure is viewed from directly above, the upper edge of one of the side surface portions in at least one direction and the upper edge of the other of the side surface portions form the outer edge of a rectangle with four equal sides. An assembled structure according to claim 1 or 2, wherein, when the assembled structure is viewed from directly below, the lower edge of one of the side surface portions in at least one direction and the lower edge of the other of the side surface portions form the outer edge of a rectangle with four equal sides. The assembled structure described in claim 3, wherein an opening having a rectangular shape with four equal sides is provided at the lower end of the assembled structure. Each of the first side surface portions provided on both sides in the front-rear direction is configured by combining four panels,
The lengths of the folding lines of the four panels constituting the first side surface portion are equal among the panels,
In each of the first side surface portions, the four panels constituting the first side surface portion are combined in a state where a rectangle having four sides defined by the folding lines of each of the four panels appears on the first side surface portion,
Each of the second side surface portions provided on both sides in the width direction is configured by combining four panels,
The lengths of the folding lines of the four panels constituting the second side surface portion are equal among the panels,
3. The assembly structure of claim 1, wherein in each of the second side portions, the four panels constituting the second side portion are combined in a state in which a rectangle having four sides defined by the folding lines of each of the four panels appears on the second side portion. The first side surface portion is
an extension portion formed by folding each of the four panels constituting the first side surface portion at the folding line and extending outward in the front-rear direction;
The assembly structure according to claim 5 , further comprising: a folded portion that is continuous with a tip end portion of the extension portion and that is folded back toward the inside in the front-rear direction. the first side surface portion includes four of the extending portions and four of the folded portions,
The assembly structure according to claim 6 , further comprising an attachment piece attached to each of the two adjacent folded portions in a state spanning the two adjacent folded portions. Each of the four panels constituting the respective side surface portions has a first portion having a planar shape of an isosceles triangle and a second portion that is continuous with the first portion via the folding line and has a planar shape of an equilateral triangle,
the first portion of each of the four panels has a congruent shape between the panels;
3. The assembled structure according to claim 1, wherein the second portions of the four panels have the same shape. a cone-shaped top portion disposed at an upper end of the assembly structure;
the top portion is placed on the upper ends of the side portions on both sides in the at least one direction,
3. The assembled structure according to claim 1, wherein the lower edge of the top portion forms the outer edge of a rectangle with four equal sides. the apex has four apex sides;
10. The assembled structure of claim 9, wherein each of the four top sides is an isosceles triangle in shape. The top portion is formed by combining two or more panels,
Each of the two or more panels constituting the top portion includes a joint piece, and the joint pieces are connected to each other when the two or more panels are combined;
10. The assembled structure according to claim 9, wherein, when the assembled structure is structured so that it can pass through the hollow portion along either the front-to-rear direction or the width direction, the connecting pieces in a connected state extend in a direction intersecting either one of the directions. The assembled structure described in claim 1 or 2, wherein each of the four panels is made of cardboard. The assembled structure described in claim 6, wherein the cavity communicates with the interior of the dome-shaped structure by inserting the extension portion and the folded portion into a dome-side opening provided in the dome-shaped structure. An assembled structure having a cavity therein,
each of the side surface portions on both sides in at least one direction of the front-rear direction of the assembled structure, which is perpendicular to the height direction of the assembled structure, and the width direction of the assembled structure, which is perpendicular to both the height direction and the front-rear direction, has four triangular faces that are congruent in shape;
An assembled structure, wherein in each of the side portions, the four triangular faces are arranged in such a way that a quadrilateral with four equal sides consisting of one side of each of the four triangular faces appears on the side portion.