JP7619613B2 - Three-dimensional structure assembly kit - Google Patents

Description

The present invention relates to a three-dimensional structure assembly kit capable of assembling a three-dimensional structure by connecting a plurality of plate-like members.

In the event of a disaster or other emergency, it has become common for large spaces to be partitioned appropriately to provide private space for residents who have evacuated to local gymnasiums, community centers, etc. Providing private space is not only effective from the perspective of protecting privacy and allowing people to spend their time in peace, but also from the perspective of preventing the spread of various infectious diseases.

Patent Document 1 describes an invention relating to a partition unit that includes partition plates with small holes for connection formed near the sides and ends of rectangular boards, and connecting belts that connect the partition plates. The partition plates are connected by arranging the sides or ends of the partition plates so that they butt up against each other, and passing the connecting belt through the small holes in the butted partition plates. By connecting multiple partition plates in this way, a large space can be divided into private areas of appropriate size.

JP 2007-113366 A

However, preparing partition units solely for emergencies is not only costly, but also requires a large storage space to ensure storage. For this reason, it is conceivable to use them as boards for constructing storage boxes for balls and mats or fences in gymnasiums, etc., during normal times other than emergencies, and then repurpose these boards as partition boards in emergencies. By removing the connecting belts connecting the boards together and reconnecting them by rearranging the connections as appropriate, gymnasium equipment can be repurposed as partition units to partition off private spaces.

In this way, in order to repurpose gymnasium equipment into partition units, it is necessary that the partition panels can be easily connected and rearranged. Also, in the event of an emergency, many residents may seek refuge in public spaces such as gymnasiums at the same time, so for this reason too, it is necessary that the partition panels can be easily connected and rearranged.

However, the partition board described in Patent Document 1 is a 180 cm x 90 cm reinforced cardboard board made of paper. Therefore, the partition board needs to be held so that it does not fall over until the connecting work with the connecting belt is completed, and a worker is needed to hold the partition board in addition to the worker performing the connecting work. The connecting work and rearrangement work require a lot of manpower. As a result, it is difficult to install the partition unit easily and quickly. There is a demand for improving the work efficiency of the partition unit installation work.

In order to solve the above problems, the three-dimensional structure assembly kit of the present invention is a three-dimensional structure assembly kit capable of assembling a three-dimensional structure by connecting multiple rectangular plate-like members, and includes the plate-like members and a connecting member that connects a pair of the plate-like members, and the side edges of the plate-like members are formed with multiple convex portions that protrude in a direction along the main surface of the plate-like members and concave portions that are relatively concave in a direction along the main surface relative to the convex portions, and are configured such that the sides of the pair of plate-like members are butted together to engage the convex portions of one plate-like member with the concave portions of the other plate-like member, and the pair of plate-like members can be connected by the connecting member.

According to the above configuration, when connecting plate-like members, the plate-like members can be connected with the connecting member in a state in which the convex portion of one of the pair of plate-like members is engaged with the concave portion of the other plate-like member. When connecting with the connecting member, the pair of plate-like members are engaged, so the plate-like members are temporarily fastened to each other. This makes it easy to connect the plate-like members with the connecting member afterwards. Depending on the assembled shape of the plate-like members, the temporarily fastened plate-like members can stand on their own, making it possible for one person to perform the connecting work without holding the plate-like members. This improves the work efficiency when assembling a three-dimensional structure.

Here, a three-dimensional structure refers to a structure in which plate-like members are assembled three-dimensionally. Examples include partitions that divide a space by connecting multiple plate-like members, tables and beds made of multiple connected plate-like members, and equipment storage boxes for storing balls, mats, etc. in gymnasiums, etc. The same applies below.

In order to solve the above problems, the plate-like member of the present invention is a rectangular plate-like member that can be joined together to assemble a three-dimensional structure, and has a main surface formed with a plurality of through holes penetrating in the thickness direction, and a side edge formed with a plurality of convex portions that protrude in a direction along the main surface, and a plurality of concave portions that are recessed in a direction along the main surface relative to the convex portions.

According to the above configuration, when connecting plate-like members, the convex portion of one of the pair of plate-like members can be engaged with the concave portion of the other plate-like member. Therefore, when connecting a pair of plate-like members with a connecting member, the connecting work can be performed in a state in which the pair of plate-like members are engaged. When connecting with the connecting member, the pair of plate-like members are engaged, so that the plate-like members are temporarily fixed to each other. Therefore, the subsequent connecting work with the connecting member can be easily performed. Also, depending on the assembled shape of the plate-like members, it is possible for one person to perform the connecting work without holding the plate-like members. This can improve the work efficiency when assembling a three-dimensional structure.

The present invention improves the ease of assembling three-dimensional structures.

1A is a perspective view of a partition which is a three-dimensional structure of the present embodiment, and FIG. 1B is an enlarged view of a region surrounded by a dashed line in FIG. 1A, that is, a partially enlarged perspective view of the partition. 4A to 4C are perspective views of plate-like members used in the partition. FIG. 4A and 4B are perspective views of a side member constituting a plate-shaped member. 1A is a partial perspective view of the hollow structure constituting the plate material, FIG. 1B is a γ-γ line cross-sectional view of FIG. 1A, and FIG. 1C is a σ-σ line cross-sectional view of FIG. 1A. 4A to 4C are diagrams for explaining a molding process for a hollow structural body. FIG. 2 is an exploded perspective view of the side member and an overall perspective view of the outer main surface member. FIG. 2 is an exploded perspective view of the side member and an overall perspective view of the inner main surface member. 5A and 5B are perspective views of a bent connecting member, in which FIG. 5A is a perspective view seen from the front side, and FIG. 5B is a perspective view seen from the rear side. 5A and 5B are perspective views of a straight connecting member, in which FIG. 5A is a perspective view seen from the front side, and FIG. 5B is a perspective view seen from the rear side. 5A and 5B are perspective views of a cap member, in which FIG. 5A is a perspective view seen from the front side, and FIG. 5B is a perspective view seen from the rear side. FIG. 4 is a diagram for explaining dimensions of a plate-like member. 1(b) is a cross-sectional view taken along line 13A-13A in FIG. 1(b), and FIG. 1(b) is a cross-sectional view taken along line 13B-13B in FIG. 1(b). FIG. 13 is a perspective view of a ball cage, which is an application example of the plate-shaped member. FIG. 13 is a perspective view of a transport carrier, which is an application example of the plate-shaped member. 1A and 1B are diagrams illustrating a wall protection panel as an application example of a plate-like member. FIG. 13 is a perspective view of a simple bed as an application example of the plate-shaped member. FIG. 13 is a perspective view of a simple desk as an application example of the plate-shaped member. FIG. 13 is a perspective view of a modified example of a bent connecting member.

Hereinafter, one embodiment of a three-dimensional structure embodying the present invention will be described.
As shown in Fig. 1(a), the three-dimensional structure of this embodiment is a partition 1 for dividing a large space into appropriate small spaces. The partition 1 is used, for example, in the event of an emergency such as a disaster, to divide and provide living spaces with privacy for residents who have evacuated to a gymnasium, a community center, etc. The partition 1 shown in Fig. 1(a) has four side walls 2 with a height of about 1.8 m and a width of about 3.6 m, and is capable of dividing a space of about 3.6 m square. An entrance 3 is formed in a part of one of the side walls 2.

The partition 1 has a plate member 10, a connecting member 70, and a cap member 80. The partition 1 is formed by connecting multiple rectangular plate members 10 with connecting members 70. The cap member 80 is attached to the connecting member 70.

As shown in FIG. 2, there are three types of plate-like members 10 used in the partition 1 of this embodiment, which differ in shape and size. The plate-like member 10a shown in FIG. 2(a) is a rectangular plate with a long side length of about 120 cm and a short side length of about 60 cm. The plate-like member 10b shown in FIG. 2(b) is a square plate with a side length of about 120 cm. The plate-like member 10c shown in FIG. 2(c) is a square plate with a side length of about 60 cm. Each plate-like member 10 has a thickness of about 3 cm. In the following, when explaining matters common to the plate-like members 10a, 10b, and 10c, they may be simply referred to as plate-like members 10.

As shown in FIG. 1(a), the side wall 2 of the partition 1 where the entrance 3 is not formed is formed by connecting three plate-like members 10b and three plate-like members 10a. Three plate-like members 10b are connected in the width direction to the lower side of the side wall 2, and a plate-like member 10a is connected to the upper side of each plate-like member 10b. The upper plate-like member 10a is arranged so that its longitudinal direction is aligned with the width direction of the side wall 2.

The side wall 2 in which the inlet 3 is formed is formed by connecting three plate-shaped members 10a, one plate-shaped member 10b, and two plate-shaped members 10c. The upper plate-shaped member 10a is arranged so that its longitudinal direction is aligned with the width direction of the side wall 2. The lower plate-shaped member 10a is arranged so that its lateral direction is aligned with the width direction of the side wall 2.

As shown in Figures 2 to 4, the plate-shaped member 10 has a plate material 11 and side members 31, 61 attached to the side 13 of the plate material 11. As shown in Figure 2(a), the plate-shaped member 10a has a rectangular plate-shaped plate material 11 and side members 31, 61. As shown in Figure 2(b), the plate-shaped member 10b has a square plate-shaped plate material 11 and side members 31, 61. As shown in Figure 2(c), the plate-shaped member 10c has a square plate-shaped plate material 11 and side members 31.

<Regarding Plate Material 11>
The plate material 11 constituting the plate-like member 10 is formed of a hollow structure 12, which will be described later. The plate material 11 is formed by cutting the hollow structure 12 to an appropriate size. Therefore, the plate-like members 10a, 10b, and 10c only differ in the shape and size of the plate material 11, and the configuration of the hollow structure 12, which is the basis of the plate material 11, is the same. In addition, the side members 31 attached to the plate-like members 10a and 10b are the same member, and the side members 61 attached to the plate-like members 10a and 10b are the same member.

In the following, of the plate-like member 10, the plate material 11 of the plate-like member 10a shown in FIG. 2(a) will be described.
As shown in Fig. 3, the plate material 11 constituting the plate-like member 10a is formed in a rectangular plate shape with a long side 13a having a length of about 120 cm, a short side 13b having a length of about 60 cm, and a thickness of about 3 cm. A plurality of protrusions 16 protruding in a direction along the main surface of the plate material 11 are formed on each side 13 of the plate material 11. Four protrusions 16 are formed on the long side 13a of the plate material 11, and two protrusions 16 are formed on the short side 13b of the plate material 11. By forming the protrusions 16 on the side 13 of the plate material 11, a plurality of recesses 15 are formed that are recessed relatively to the protrusions 16 in a direction along the main surface.

The positions of the recesses 15 are different on the opposing long sides 13a of the plate material 11. On the upper long side 13a shown in FIG. 3, a convex portion 16 is formed on the edge on the right short side 13b side, while on the lower long side 13a, a concave portion 15 is formed on the edge on the right short side 13b side. Specifically, when the long side 13a is viewed in the left-right direction in FIG. 3, at the position where the convex portion 16 is formed on the upper long side 13a, a concave portion 15 is formed on the lower long side 13a. Also, at the position where the concave portion 15 is formed on the upper long side 13a, a convex portion 16 is formed on the lower long side 13a. Similarly, when the short side 13b is viewed in the up-down direction, at the position where the convex portion 16 is formed on the right short side 13b, a concave portion 15 is formed on the left short side 13b. Additionally, where the recess 15 is formed on the right short side 13b, a protrusion 16 is formed on the left short side 13b.

The plate material 11 has six through holes 14 that penetrate in the thickness direction. Two through holes 14 are formed near each of the long sides 13a in the direction along the long sides 13a, and one is formed near each of the short sides 13b in the approximate center of the short side.

<Regarding the hollow structure 12 constituting the plate material 11>
As shown in Fig. 5, the plate material 11 is composed of a plate-shaped hollow structure 12 in which a plurality of hexagonal columnar cells S are arranged side by side. The plate material 11 is made of a conventionally known thermoplastic resin material. The material is not particularly limited. Examples of the material include polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, and acrylonitrile-butadiene-styrene.

First, the structure of the hollow structure 12 constituting the plate material 11 will be described.
As shown in Fig. 5(a), the hollow structure 12 is composed of a core layer 20 having a plurality of cells S arranged side by side therein, and sheet-like skin layers 24, 25 bonded to both sides in the thickness direction of the core layer 20. Hereinafter, in Fig. 5, the main surface shown on the upper side of the hollow structure 12 is referred to as the upper surface 12a, and the main surface shown on the lower side is referred to as the lower surface 12b. The skin layer 24 is bonded to the upper surface 12a side of the hollow structure 12, and the skin layer 25 is bonded to the lower surface 12b side of the hollow structure 12.

As shown in Figures 5(b) and (c), the core layer 20 is formed by folding a sheet of thermoplastic resin material molded into a predetermined shape. The core layer 20 is composed of an upper wall portion 21, a lower wall portion 22, and a side wall portion 23 that is erected between the upper wall portion 21 and the lower wall portion 22 and divides the cells S into a hexagonal column shape.

As shown in FIG. 5A, the cells S defined within the core layer 20 include a first cell S1 and a second cell S2 having different configurations.
As shown in FIG. 5B, in the first cell S1, an upper wall portion 21 having a two-layer structure is provided on the upper part of the side wall portion 23. The layers of the upper wall portion 21 having the two-layer structure are bonded to each other. In the first cell S1, a lower wall portion 22 having a one-layer structure is provided on the lower part of the side wall portion 23. On the other hand, as shown in FIG. 5C, in the second cell S2, an upper wall portion 21 having a one-layer structure is provided on the upper part of the side wall portion 23. In the second cell S2, a lower wall portion 22 having a two-layer structure is provided on the lower part of the side wall portion 23. The layers of the lower wall portion 22 having the two-layer structure are bonded to each other. As shown in FIGS. 5B and 5C, adjacent first cells S1 and adjacent second cells S2 are partitioned by side walls 23 having a two-layer structure.

As shown in FIG. 5(a), the first cells S1 are arranged in a row along the X direction, and when viewed from above, two adjacent first cells S1 share one side of a hexagon. Similarly, the second cells S2 are arranged in a row along the X direction, and when viewed from above, two adjacent second cells S2 share one side of a hexagon. The rows of first cells S1 and the rows of second cells S2 are alternately arranged in the Y direction perpendicular to the X direction. The first cells S1 and second cells S2 form a honeycomb structure as a whole in the core layer 20.

As shown in Figures 5(a) to (c), the skin layer 24 is bonded to the upper surface of the core layer 20, so that the upper part of the side wall portion 23 of the core layer 20 is blocked by the upper wall portion 21 of the core layer 20 and the skin layer 24. Similarly, the skin layer 25 is bonded to the lower surface of the core layer 20, so that the lower part of the side wall portion 23 of the core layer 20 is blocked by the lower wall portion 22 of the core layer 20 and the skin layer 25.

<Regarding the manufacturing method of the plate material 11>
Next, a description will be given of a manufacturing method of the plate material 11. The manufacturing method of the plate material 11 includes a step of manufacturing the hollow structure 12 and a cutting step of forming the plate material 11 from the hollow structure 12.

First, the process for manufacturing the hollow structural body 12 will be described with reference to FIG.
The process for manufacturing the hollow structure 12 includes a molding process for forming an uneven sheet material 100 having a predetermined uneven shape from a single flat sheet material made of thermoplastic resin, a folding process for folding the uneven sheet material 100 to form a core layer 20, and a joining process for joining skin layers 24, 25 to both main surfaces of the core layer 20.

As shown in FIG. 6(a), in the molding process, a flat sheet material made of a thermoplastic resin is molded into a predetermined shape to form a concave-convex sheet material 100. In the concave-convex sheet material 100, band-shaped flat regions 110 and bulging regions 120 are alternately arranged in the longitudinal direction (X direction) of the concave-convex sheet material 100. In the bulging region 120, a first bulging portion 121 having a cross section of a downward groove shape consisting of an upper surface and a pair of side surfaces is formed over the entire extension direction (Y direction) of the bulging region 120. Note that the angle between the upper surface and the side surface of the first bulging portion 121 is preferably 90 degrees, and as a result, the cross section of the first bulging portion 121 is a downward U-shape. In addition, the width of the first bulging portion 121 (the length of the short side of the upper surface) is set to be equal to the width of the flat region 110 and twice the length of the bulging height of the first bulging portion 121 (the length of the short side of the side surface).

In addition, in the bulging region 120, a plurality of second bulging portions 122, whose cross-sectional shape is a trapezoid obtained by bisecting a regular hexagon at its longest diagonal, are formed so as to be perpendicular to the first bulging portions 121. The bulging height of the second bulging portions 122 is set to be equal to the bulging height of the first bulging portions 121. In addition, the distance between adjacent second bulging portions 122 is equal to the width of the upper surface of the second bulging portions 122.

The uneven sheet material 100 is formed by partially expanding the sheet upwards using the plasticity of a flat sheet material made of thermoplastic resin. The uneven sheet material 100 can be formed from a single flat sheet material using a well-known forming method such as vacuum forming or compression forming.

6(a) and (b), in the folding process, the core layer 20 is formed by folding the uneven sheet material 100 configured as described above along the boundary lines P and Q. Specifically, the uneven sheet material 100 is valley-folded at the boundary line P between the flat area 110 and the bulging area 120, and mountain-folded at the boundary line Q between the top surface and side surface of the first bulging portion 121, and compressed in the X direction. Then, as shown in FIG. 6(b) and (c), the top surface and side surface of the first bulging portion 121 are folded over, and the end surface of the second bulging portion 122 and the flat area 110 are folded over, forming a rectangular column-shaped partition body 130 extending in the Y direction for one bulging area 120. Such partition bodies 130 are continuously formed in the X direction to form a hollow plate-shaped core layer 20. In this embodiment, the direction in which the uneven sheet material 100 is compressed to be folded is the direction in which the cells S are arranged side by side (X direction).

When the uneven sheet material 100 is compressed as described above, the upper wall 21 of the core layer 20 is formed by the top and side surfaces of the first bulge 121, and the lower wall 22 of the core layer 20 is formed by the end surface of the second bulge 122 and the flat area 110. As shown in FIG. 6(c), the portion of the upper wall 21 where the top and side surfaces of the first bulge 121 fold over to form a two-layer structure, and the portion of the lower wall 22 where the end surface of the second bulge 122 folds over to form a two-layer structure are overlapping portions 131.

The hexagonal columnar region formed by folding the second bulge 122 becomes the second cell S2, and the hexagonal columnar region formed between a pair of adjacent partitions 130 becomes the first cell S1. In this embodiment, the upper surface and side surface of the second bulge 122 form the side wall portion 23 of the second cell S2, and the side surface of the second bulge 122 and the flat portion located between the second bulge portions 122 in the bulge region 120 form the side wall portion 23 of the first cell S1.

The contact area between the flat surfaces in the bulging region 120 forms the side wall 23 of the two-layer structure of the first cell S1, and the contact area between the upper surfaces of the second bulging portions 122 forms the side wall 23 of the two-layer structure of the second cell S2.

As shown in FIG. 6(c), the first cell S1 has an upper portion defined by a pair of overlapping portions 131, and the second cell S2 has a lower portion defined by a pair of overlapping portions 131. When carrying out this folding process, it is preferable to heat-treat the embossed sheet material 100 so that it is softened.

In the joining process, thermoplastic resin sheet materials are joined by heat welding to the upper and lower surfaces of the core layer 20 obtained in the folding process. The sheet material joined to the upper surface of the core layer 20 becomes the skin layer 24, which, together with the upper wall portion 21 of the core layer 20, constitutes a blocking wall that blocks the upper part of the side wall portion 23. The sheet material joined to the lower surface of the core layer 20 becomes the skin layer 25, which, together with the lower wall portion 22 of the core layer 20, constitutes a blocking wall that blocks the lower part of the side wall portion 23.

When the sheet material (skin layers 24, 25) is heat welded to the core layer 20, the two-layered upper wall portion 21 (overlapped portion 131) of the first cell S1 is heat welded to each other. Similarly, the two-layered lower wall portion 22 (overlapped portion 131) of the second cell S2 is heat welded to each other.

The joining process results in a hollow structure 12 in which a large number of first cells S1 or second cells S2 are arranged in rows in the X direction, and a large number of first cells S1 and second cells S2 are arranged alternately in the Y direction.

Next, a cutting process for forming the plate material 11 from the hollow structure 12 will be described.
First, the hollow structure 12 is cut out to a predetermined size. In the case of the plate material 11 shown in Fig. 2(a) and Fig. 3, the hollow structure 12 is cut out to a size of about 60 cm x about 120 cm. The plate material 11 is cut out to a shape in which the recessed portion 15 and the protruding portion 16 are formed.

Then, the cut-out hollow structure 12 is placed under a penetration jig (not shown). The penetration jig is installed so that it can move up and down in a direction perpendicular to the upper surface 12a of the hollow structure 12. The penetration jig is lowered toward the hollow structure 12 to form a through hole 14 in the hollow structure 12.

Through the above steps, the plate material 11 is obtained.
<Regarding side members 31, 61>
As shown in Figures 4(a) and (b), the side members 31, 61 attached to the side 13 of the plate material 11 are composed of two types of side members 31 and 61 having different shapes. The side members 31 and 61 are made of a conventionally known thermoplastic resin material. The material is not particularly limited. Examples of the material include polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, and acrylonitrile-butadiene-styrene.

In the plate-like member 10a shown in FIG. 2(a), a side member 31 is attached to the short side on the right side, and a side member 31 is attached to the short side on the left side in a state where it is upside down from the right side. In addition, the side member 31 and the side member 61 are attached to the upper long side in this order from the right side, and the side member 61 and the side member 31 are attached to the lower long side in this order from the right side. The side members 31 and 61 are shaped and sized so that when attached to the plate material 11, concave portions 17 and convex portions 18 are formed alternately on the opposing sides of the plate-like member 10, and the concave portions 17 and convex portions 18 can be engaged with each other. As shown in FIG. 12, in the following, the concave portions and convex portions formed on the sides of the plate-like member 10 by attaching the side members 31 and 61 are referred to as the concave portions 17 and the convex portions 18.

Figure 4 (a) shows the side member 31 attached to the side 13 of the plate material 11, with the side member 61 and the plate material 11 omitted. The side member 31 has an elongated main body portion 32 and a fitting portion 33 that protrudes from the middle of the main body portion 32 in the longitudinal direction.

Two recesses 35a, 35b are formed in the main body 32. The recesses 35a, 35b are formed in the portion of the main body 32 opposite the mating portion 33, and are recessed toward the mating portion 33. By forming the recesses 35a, 35b, two protrusions 34a, 34b that protrude relatively to the recesses 35a, 35b are formed in the portion of the main body 32 opposite the mating portion 33. In addition, a thin plate-shaped locking portion 38 that protrudes toward the mating portion 33 is formed at the longitudinal end of the main body 32.

The fitting portion 33 has a pair of annular base portions 36 and a tubular portion 37 extending in the thickness direction of the side member 31 between the pair of base portions 36. The outer surface of the base portions 36 is flush with the outer surface of the main body portion 32. The tubular portion 37 extends from the inner peripheral edge of the base portions 36 so as to be perpendicular to the base portions 36.

As shown in Figures 7 and 8, the side member 31 can be divided into an outer main surface member 41 and an inner main surface member 51. The side member 31 is attached to the plate material 11 by engaging the outer main surface member 41 with the inner main surface member 51. The outer main surface member 41 is attached to the surface that will become the outer surface of the partition 1, and the inner main surface member 51 is attached to the surface that will become the inner surface of the partition 1, forming the side member 31.

As shown in FIG. 7, the outer main surface member 41 of the side member 31 has an elongated outer main surface body portion 42 and an outer main surface fitting portion 43 that protrudes from the longitudinal middle portion of the outer main surface body portion 42. The outer main surface body portion 42 has a thin outer main surface end plate 45a and an outer main surface side plate 45b. The outer main surface end plate 45a and the outer main surface side plate 45b are integrally connected so as to be perpendicular to each other.

The inner surface of the outer main surface side plate 45b is formed with a plurality of barbed protrusions 48 aligned in the longitudinal direction. The aforementioned locking portion 38 is integrally formed at the longitudinal end of the outer main surface side plate 45b, extending in a direction along the outer main surface side plate 45b and protruding toward the outer main surface fitting portion 43.

As shown in FIG. 7, the outer main surface side plate 45b is formed continuously with the same width in the longitudinal direction. On the other hand, the outer main surface end plate 45a is formed in a shape that is partially divided in the longitudinal direction. In the divided portion of the outer main surface end plate 45a, outer main surface convex portions 44a, 44b made of thin plate material are formed so as to protrude outward from the divided end portion of the outer main surface end plate 45a. Engagement protrusions 46 extending in the short direction are formed on both longitudinal side surfaces of the outer main surface convex portions 44a, 44b.

As shown in FIG. 7, the outer main surface fitting portion 43 has the above-mentioned base 36 that protrudes in a direction along the outer main surface side plate 45b, and a cylindrical outer main surface tube portion 47 that protrudes in a direction perpendicular to the base 36. The protruding length of the outer main surface tube portion 47 from the base 36 is slightly shorter than twice the width of the outer main surface end plate 45a in the short direction. Engagement protrusions 47a are formed at multiple locations on the tip of the outer main surface tube portion 47. The engagement protrusions 47a are elastically deformable radially inward of the outer main surface tube portion 47.

As shown in FIG. 8, the inner main surface member 51 has an elongated inner main surface body portion 52 and an inner main surface fitting portion 53 that protrudes from the longitudinal middle portion of the inner main surface body portion 52. The inner main surface member 51 has a symmetrical shape to the outer main surface member 41, and its basic shape is the same as that of the outer main surface member 41.

The inner main surface body 52 has a thin inner main surface end plate 55a and an inner main surface side plate 55b. The inner main surface end plate 55a and the inner main surface side plate 55b are integrally connected so as to be perpendicular to each other. On the inner surface of the inner main surface side plate 55b, a plurality of barbed projections 48 (not shown) are formed aligned in the longitudinal direction, similar to the outer main surface side plate 45b. The aforementioned locking portion 38 that protrudes in the direction along the inner main surface side plate 55b is integrally formed on the longitudinal end of the inner main surface side plate 55b.

As shown in FIG. 8, the inner main surface side plate 55b is formed continuously with the same width in the longitudinal direction. On the other hand, the inner main surface end plate 55a is formed in a shape that is partially divided in the longitudinal direction, similar to the outer main surface end plate 45a. In the divided portion of the inner main surface end plate 55a, inner main surface protrusions 54a, 54b made of thin plate material are formed so as to protrude outward from the divided end portion of the inner main surface end plate 55a. Engagement recesses 56 are formed on both longitudinal side surfaces of the inner main surface protrusions 54a, 54b.

As shown in FIG. 8, the inner main surface fitting portion 53 has the above-mentioned base portion 36 that protrudes in a direction along the inner main surface side plate 55b, and a cylindrical inner main surface tube portion 57 that protrudes in a direction perpendicular to the base portion 36. The protruding length of the inner main surface tube portion 57 from the base portion 36 is slightly shorter than twice the width of the inner main surface end plate 55a in the short direction. In addition, the inner diameter of the inner main surface tube portion 57 is slightly larger than the outer diameter of the outer main surface tube portion 47.

The base end of the inner main surface cylinder portion 57 is formed with multiple engagement recesses 57a that engage with the engagement protrusions 47a of the outer main surface cylinder portion 47. The engagement recesses 57a are recessed radially outward from the inner surface of the inner main surface cylinder portion 57.

As shown in FIG. 4, the side member 31 is formed by engaging the outer main surface member 41 and the inner main surface member 51. When the outer main surface member 41 and the inner main surface member 51 are engaged, the outer main surface body portion 42 and the inner main surface body portion 52 form the body portion 32 of the side member 31. The outer main surface convex portions 44a, 44b and the inner main surface convex portions 54a, 54b form the convex portions 34a, 34b of the side member 31. The outer main surface end plate 45a and the inner main surface end plate 55a form the concave portions 35a, 35b of the side member 31. At this time, the engaging protrusions 46 formed on the outer main surface convex portions 44a, 44b engage with the engaging concave portions 56 formed on the inner main surface convex portions 54a, 54b. Then, inside the body portion 32, a storage space for accommodating the side edge 13 of the plate material 11 is formed. The inner thickness dimension of the main body 32 is approximately 3 cm.

The outer main surface cylindrical portion 47 and the inner main surface cylindrical portion 57 form the cylindrical portion 37 of the side member 31, which becomes the fitting portion 33. The length of the outer main surface cylindrical portion 47 protruding from the base 36 is slightly shorter than twice the width of the outer main surface end plate 45a in the short direction, and the length of the inner main surface cylindrical portion 57 protruding from the base 36 is slightly shorter than twice the width of the inner main surface end plate 55a in the short direction. The inner diameter of the inner main surface cylindrical portion 57 is slightly larger than the outer diameter of the outer main surface cylindrical portion 47. Therefore, as shown in Figures 4(a) and 13(a), in the fitting portion 33 of the side member 31, the outer main surface cylindrical portion 47 is accommodated inside the inner main surface cylindrical portion 57 to form the cylindrical portion 37. Also, as shown in Figures 4(a) and 13(b), the engagement protrusion 47a of the outer main surface cylindrical portion 47 engages with the engagement recess 57a of the inner main surface cylindrical portion 57.

As shown in FIG. 4(b), the side member 61 has an elongated main body 62 and a fitting portion 63 that protrudes from the middle of the main body 62 in the longitudinal direction. The shape of the main body 62 of the side member 61 is slightly different from the shape of the main body 32 of the side member 31.

Three recesses 65a, 65b, 65c recessed toward the fitting portion 63 are formed in the main body 62 of the side member 61 on the side opposite the fitting portion 63. By forming the recesses 65a, 65b, 65c, two protrusions 64a, 64b protruding relatively to the recesses 65a, 65b, 65c are formed in the main body 62 on the side opposite the fitting portion 63. In the side member 61, no portion corresponding to the locking portion 38 of the side member 31 is formed.

The fitting portion 63 has a pair of annular base portions 66 and a tubular portion 67 extending in the thickness direction of the side member 61 between the pair of base portions 66. The outer surface of the base portions 66 is flush with the outer surface of the main body portion 62.

Similar to side member 31, side member 61 can be divided into an outer main surface member and an inner main surface member that are attached to the outer surface side of partition 1. It is assembled in the same engaging relationship as side member 31, and its basic structure is similar to that of side member 31. Therefore, a description of the outer main surface member and inner main surface member that make up side member 61 will be omitted.

Next, a state in which the side members 31 are attached to the plate material 11 will be described.
The side member 31 is attached to the side edge 13 of the plate material 11 by assembling the outer main surface member 41 to the main surface that is the outer side of the partition 1, and assembling the inner main surface member 51 to the main surface that is the inner side of the partition 1. The outer main surface member 41 and the inner main surface member 51 are fixed to the side edge 13 of the plate material 11 by engagement between the engaging projections 46 and the engaging recesses 56 and between the engaging projections 47a and the engaging recesses 57a.

The side edge 13 of the plate material 11 is accommodated in the accommodation space formed inside the main body 32. The convex portion 16 formed on the side edge 13 of the plate material 11 is accommodated in the convex portions 34a and 34b of the side member 31. The outer main surface end plate 45a and the inner main surface end plate 55a abut the end faces of the concave portion 15 of the plate material 11. In addition, the inner surface of the outer main surface side plate 45b abuts the main surface of the plate material 11 that becomes the outer surface of the partition 1, and the inner surface of the inner main surface side plate 55b abuts the main surface of the plate material 11 that becomes the inner surface of the partition 1. In other words, the end of the side edge 13 of the plate material 11 is sandwiched between the outer main surface side plate 45b and the inner main surface side plate 55b. On both main surfaces of the plate material 11, the barbed protrusions 48 formed on the inner surface of the outer main surface side plate 45b and the inner surface of the inner main surface side plate 55b are inserted into the cells S of the hollow structure 12 that constitutes the plate material 11.

The cylindrical portion 37 of the fitting portion 33 of the side member 31 fits into the through hole 14 of the plate material 11. The inner surface of the base portion 36 of the fitting portion 33 abuts against both main surfaces of the plate material 11.
<Dimensions of Side Members 31, 61>
The side members 31, 61 have a shape and dimensions set so that, when attached to the plate material 11, concave portions 17 and convex portions 18 are formed alternately on the opposing sides of the plate-shaped member 10, and the concave portions 17 and convex portions 18 are engageable with each other.

As shown in FIG. 4(a), the longitudinal length L1 of the convex portion 34a of the side member 31 is approximately equal to the longitudinal length L3 of the concave portion 35a. The longitudinal length L2 of the convex portion 34b is approximately equal to 3/4 times the longitudinal length L1 of the convex portion 34a. The longitudinal length L4 of the concave portion 35b is approximately equal to 1/2 times the longitudinal length L1 of the convex portion 34a. The length L5 from the end face of the main body portion 32 on the convex portion 34b side to the edge of the locking portion 38 is approximately equal to 1/4 times the longitudinal length L1 of the convex portion 34a.

The width D1 of the main body 32 at the recesses 35a and 35b is approximately equal to 1/2 the width D2 of the main body 32 at the protrusions 34a and 34b. The depth D3 of the recesses 35a and 35b relative to the protrusions 34a and 34b is approximately equal to 1/2 the width D2 of the main body 32 at the protrusions 34a and 34b, and is approximately equal to the width D1 of the main body 32 at the recesses 35a and 35b. The width D1 of the main body 32 at the recesses 35a and 35b is approximately equal to 1/4 the longitudinal length L1 of the protrusion 34a.

The longitudinal length L6 of the convex portion 64a of the side member 61 is approximately equal to the longitudinal length L7 of the convex portion 64b. The longitudinal length L6 of the convex portion 64a of the side member 61 and the longitudinal length L7 of the convex portion 64b are approximately equal to the longitudinal length L1 of the convex portion 34a of the side member 31.

The longitudinal length L8 of the recess 65b of the side member 61 is approximately equal to the longitudinal length L6 of the protrusion 64a. The longitudinal length L9 of the recess 65b is approximately equal to the longitudinal length L10 of the recess 65c. The longitudinal length L9 of the recess 65b and the longitudinal length L10 of the recess 65c are approximately equal to 1/2 the longitudinal length L6 of the protrusion 64a.

The width D4 of the main body 62 at the recesses 65a, 65b, and 65c is approximately equal to 1/2 the width D5 of the main body 62 at the protrusions 64a and 64b. The depth D6 of the recesses 65a, 65b, and 65c relative to the protrusions 64a and 64b is approximately equal to 1/2 the width D5 of the main body 62 at the protrusions 64a and 64b, and is approximately equal to the width D4 of the main body 62 at the recesses 65a, 65b, and 65c. The width D4 of the main body 62 at the recesses 65a, 65b, and 65c is approximately equal to 1/4 the longitudinal length L6 of the protrusion 64a.

<Regarding plate-like members 10a, 10b, and 10c>
2 and 3, the plate-like member 10 is formed by attaching side members 31, 61 to the side 13 of the plate material 11. By attaching the side members 31, 61, the convex portions 34a, 34b, 64a, 64b and the concave portions 35a, 35b, 65a, 65b, 65c formed in the side members 31, 61 form the concave portions 17 and the convex portions 18 on the side of the plate-like member 10.

As shown in FIG. 12, the convex portions 18 formed on the side of the plate-shaped member 10 are the convex portions 34a and 34b of the side member 31 and the convex portions 64a and 64b of the side member 61. The recessed portion 17 formed on the side of the plate-shaped member 10 is the recessed portion 35a of the side member 31. In addition to the recessed portion 65a of the side member 61, there are also recessed portions consisting of, for example, the recessed portion 35b of the side member 31 and the recessed portion 65b of the side member 61, and the recessed portion 65c of the side member 61 and the side end portion of the convex portion 34b of the side member 31.

The plate-like member 10a shown in Figs. 2(a) and 12 has a side member 31 attached to the short side on the right side, and a side member 31 attached to the short side on the left side in a state in which it is upside down compared to the right side. In addition, the side member 31 and the side member 61 are attached in this order from the right to the upper long side, and the side member 61 and the side member 31 are attached in this order from the right to the lower long side.

As shown in FIG. 12, on the long side of the plate-like member 10a, a convex portion 18 is formed by the convex portions 64a and 64b of the side member 61 and the convex portions 34a and 34b of the side member 31. A concave portion 17 is formed by the end face on the convex portion 34b side of the side member 31, the concave portions 65c and 65b of the side member 61, and the concave portions 35b and 35a of the side member 31.

Here, the longitudinal length L6 of the convex portion 64a of the side member 61, the longitudinal length L7 of the convex portion 64b, and the longitudinal length L1 of the convex portion 34a of the side member 31 are all approximately equal. The longitudinal length L2 of the convex portion 34b of the side member 31 is approximately equal to 3/4 times the longitudinal length L1 of the convex portion 34a, and the depth D3 of the recesses 35a and 35b relative to the convex portions 34a and 34b of the side member 61 is approximately equal to 1/4 times the longitudinal length L1 of the convex portion 34a. Therefore, when the plate-shaped member 10a is erected so that the short side extends in the vertical direction, the recesses 17 and the convex portion 18 are formed in sequence at approximately the same length H1 from the ground on one short side of the plate-shaped member 10a. Also, the convex portion 18 and the recesses 17 are formed in sequence at approximately the same length H2 from the ground on the other long side. The length H1 of one short side and the length H2 of the other short side are approximately equal. In other words, the positions of the convex portion 18 and the concave portion 17 are different and staggered between one short side and the other short side.

This is also true when the long side of the plate member 10a is erected so that it extends in the vertical direction. Also, the position and dimensional relationship between the convex portion 18 and the concave portion 17 is the same for plate members 10b and 10c in which side members 31 and 61 are attached to the plate material 11.

<Regarding the connecting member 70>
Next, a description will be given of the connecting members 70 that connect the plate-like members 10. The connecting members 70 are attached to the side members 31, 61 of the plate-like members 10 from the inside of the partition 1, and connect the plate-like members 10.

As shown in Figures 9 and 10, there are two types of connecting members 70 in this embodiment: bent connecting members 71 that are bent into an L-shape, and straight connecting members 75 that extend straight. As shown in Figure 1, the bent connecting members 71 are members for connecting plate-like members 10 at a 90° angle at the boundary between adjacent side walls 2 of the partition 1. The straight connecting members 75 are members for connecting plate-like members 10 in a planar manner at the side walls 2 of the partition 1.

The connecting member 70 is formed from a conventionally known thermoplastic resin material. There are no particular limitations on the material. Examples of the material include polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, and acrylonitrile-butadiene-styrene.

As shown in FIG. 9(a), the bent connecting member 71 has a connecting body 72 and a connecting fitting 73. The connecting body 72 is formed in a shape in which a pair of thin plate materials are integrally connected so as to intersect at right angles. The connecting body 72 is integrally formed with a gripping portion 74 that is shaped to connect the pair of thin plate materials. The gripping portion 74 reinforces the bent connecting member 71 and is a part that the user can hold during the connecting operation.

As shown in FIG. 9(b), the connecting fitting portion 73 is formed in a cylindrical shape that protrudes perpendicularly from each thin plate material that constitutes the connecting body portion 72. Engagement protrusions 73a are formed at multiple locations on the tip of the connecting fitting portion 73. The engagement protrusions 73a are elastically deformable radially inward of the connecting fitting portion 73. Engagement recesses 73b are formed at the base end of the connecting fitting portion 73 by cutting out multiple locations in the circumferential direction of the connecting fitting portion 73.

The outer diameter of the connecting fitting portion 73 is slightly smaller than the inner diameter of the outer main surface cylindrical portion 47 of the outer main surface member 41. In addition, the protruding length of the connecting fitting portion 73 from the connecting body portion 72 is slightly longer than the protruding length from the base 36 of the outer main surface cylindrical portion 47 and the protruding length from the base 36 of the inner main surface cylindrical portion 57.

As shown in FIG. 10(a), the straight connecting member 75 has a connecting body 76 and a connecting fitting 77. The connecting body 76 is formed in a thin plate shape. A grip 78 is integrally formed on one side of the connecting body 76. The grip 78 reinforces the straight connecting member 75 and is a part that the user can hold during the connecting operation.

As shown in FIG. 10(b), the connecting fitting portion 77 is formed in a cylindrical shape that protrudes in a direction perpendicular to the other surface of the connecting body portion 76. Engagement protrusions 77a are formed at multiple locations on the tip of the connecting fitting portion 77. The engagement protrusions 77a are elastically deformable radially inward of the connecting fitting portion 77. Engagement recesses 77b are formed at the base end of the connecting fitting portion 77 by cutting out multiple locations in the circumferential direction of the connecting fitting portion 73.

The outer diameter of the connecting fitting portion 77 is slightly smaller than the inner diameter of the outer main surface cylinder portion 47 of the outer main surface member 41. The outer diameter of the connecting fitting portion 77 is approximately equal to the outer diameter of the connecting fitting portion 73 of the bent connecting member 71. In addition, the protruding length of the connecting fitting portion 77 from the connecting main body portion 76 is slightly longer than the protruding length of the outer main surface cylinder portion 47 from the base 36 and the protruding length of the inner main surface cylinder portion 57 from the base 36. The protruding length of the connecting fitting portion 77 from the connecting main body portion 76 is approximately equal to the protruding length of the connecting fitting portion 73 from the connecting main body portion 72.

<Regarding the Cap Member 80>
Next, a description will be given of the cap member 80 attached to the connecting member 70. The cap member 80 is attached from the outside of the partition 1 to the connecting member 70 which is attached from the inside of the partition 1.

The cap member 80 is formed from a conventionally known thermoplastic resin material. There are no particular limitations on the material. Examples of the material include polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, and acrylonitrile-butadiene-styrene.

As shown in FIG. 11(a), the cap member 80 has a flange portion 81 and a tube portion 82. The flange portion 81 is formed in a circular thin plate shape. A grip portion 83 is integrally formed on one side of the flange portion 81. The grip portion 83 reinforces the cap member 80 and is a part that the user can hold during the connection work.

As shown in FIG. 11(b), the tube portion 82 is formed in a cylindrical shape that protrudes perpendicularly from the other surface of the flange portion 81. Engagement protrusions 82a are formed at multiple locations on the tip of the tube portion 82. The engagement protrusions 82a are elastically deformable radially inward of the tube portion 82. Engagement recesses 82b are formed at the base end of the tube portion 82 by cutting out multiple locations around the circumference of the tube portion 82.

The outer diameter of the tubular portion 82 is slightly smaller than the inner diameter of the coupling fittings 73, 77 of the bent coupling member 71 and the straight coupling member 75. In addition, the protruding length of the tubular portion 82 from the flange portion 81 is approximately equal to the protruding length of the coupling fitting 73 of the bent coupling member 71 from the coupling body portion 72 and the protruding length of the coupling fitting 77 of the straight coupling member 75 from the coupling body portion 76.

<How to assemble partition 1>
Next, a method for assembling the partition 1 using the plate-like members 10, the connecting members 70, and the cap members 80 will be described together with their functions. The plate-like members 10, the connecting members 70, and the cap members 80 constitute an assembly kit for assembling the partition 1, and correspond to a three-dimensional structure assembly kit defined in the claims.

First, the plate-like members 10 at the ends of the adjacent side walls 2 of the partition 1 shown in FIG. 1 are connected. Since the plate-like members 10b shown in FIG. 2(b) are connected to the undersides of the adjacent side walls 2, first, two plate-like members 10b are prepared.

The opposing sides of the plate-like members 10b have convex portions 18 and concave portions 17 formed in an alternating manner. Therefore, when the sides of the two plate-like members 10b are held upright so that they extend in the vertical direction, and the sides are butted together so that they intersect, the convex portion 18 on the side of one plate-like member 10b will come to the position of the concave portion 17 on the side of the other plate-like member 10b.

The longitudinal lengths of the recesses 17 formed on the sides of the plate-like members 10b are all approximately equal, and the longitudinal lengths of the protrusions 18 are all approximately equal. Therefore, the recesses 17 of one plate-like member 10b can be fitted into the protrusions 18 of the other plate-like member 10b. This allows the two plate-like members 10b to engage with each other and be temporarily fixed in place.

Then, the two plate-like members 10b are adjusted so that they are almost perpendicular to each other. The position is adjusted so that the inner main surface member 51 of the side members 31 attached to each side is located inside the two perpendicular plate-like members 10b, and the outer main surface member 41 is located outside the two perpendicular plate-like members 10b. Then, from the inside of the two perpendicular plate-like members 10b, the connecting fitting portion 73 of the bent connecting member 71 is inserted into the fitting portions 33, 63 of the side members 31, 61 of the plate-like member 10b and attached. By attaching the bent connecting member 71, the two plate-like members 10b are fixed in a perpendicular state.

Then, the tubular portion 82 of the cap member 80 is inserted into the connecting fitting portion 73 from the outside of the plate member 10b to which the bent connecting member 71 is attached. The engaging projection 82a formed on the tubular portion 82 of the cap member 80 engages with the engaging recess 73b formed on the connecting fitting portion 73 of the bent connecting member 71. Also, the engaging projection 73a formed on the connecting fitting portion 73 of the bent connecting member 71 engages with the engaging recess 82b formed on the tubular portion 82 of the cap member 80.

By attaching the cap member 80, the connecting fitting portion 73 of the bent connecting member 71 attached to the plate-shaped member 10b is covered by the flange portion 81 of the cap member 80 on the outer surface of the partition 1. This prevents the connecting fitting portion 73 from being exposed on the outer surface of the partition 1, improving the appearance of the partition 1. In addition, the intrusion of dust, dirt, etc. into the connecting fitting portion 73 is suppressed.

By the above connecting operation, the two plate-like members 10b are connected and fixed in a perpendicular state.
Next, the plate-like members 10b on the lower side of the side walls 2 are connected in order. Unlike the plate-like members 10b at the ends of the side walls 2 that were previously connected, the plate-like members 10b on the lower side of the side walls 2 are connected by a straight connecting member 75. The two plate-like members 10b connected by the straight connecting member 75 are engaged and temporarily fixed by butting their sides together so that they are flat. The procedure for connecting the plate-like members 10b by the straight connecting member 75 and the procedure for attaching the cap members 80 are the same as those described above.

The lower plate member 10b of the side wall 2 and the lower plate members 10a, 10b of the side wall 2 in which the entrance 3 is formed are also connected in a similar manner. Once the connection work on the lower side of the side wall 2 is completed, the upper plate members 10a, 10c are connected to the upper sides of the lower plate members 10a, 10b, respectively, in a similar manner. In this manner, the partition 1 can be assembled.

13(a) and 13(b) are enlarged cross-sectional views of the connecting portion of the straight connecting member 75 shown in FIG. 1(b).
13A, the outer diameter of the connecting fitting portion 77 of the straight connecting member 75 is slightly smaller than the inner diameter of the outer main surface cylindrical portion 47 of the outer main surface member 41. Therefore, the connecting fitting portion 77 is inserted into the outer main surface cylindrical portion 47 while abutting against the inner surface of the outer main surface cylindrical portion 47. This suppresses rattling of the two connected plate-like members 10b, stabilizing the connected state.

The outer diameter of the tubular portion 82 of the cap member 80 is slightly smaller than the inner diameter of the connecting fitting portion 77 of the straight connecting member 75. Therefore, the tubular portion 82 is inserted into the connecting fitting portion 73 while abutting against the inner surface of the connecting fitting portion 73. This prevents the cap member 80 attached to the bent connecting member 71 from rattling.

As shown in FIG. 13(b), in the cap member 80 attached to the straight connecting member 75, the engagement protrusion 82a formed at the tip of the tubular portion 82 engages with the engagement recess 77b formed in the connecting fitting portion 77 of the straight connecting member 75. In addition, the engagement recess 82b formed at the base end of the tubular portion 82 of the cap member 80 engages with the engagement protrusion 77a formed in the connecting fitting portion 77 of the straight connecting member 75 (not shown).

The bent connecting member 71 has the same connecting state.
In this way, in the connection portion of the bent connecting member 71 and the straight connecting member 75, a four-layer tube is formed by the fitting portions 33, 63 of the side members 31, 61, the connecting fitting portions 73, 77 of the bent connecting member 71 and the straight connecting member 75, and the tube portion 82 of the cap member 80. The layers forming the tube are in contact with each other with almost no gaps. The members are fixed by engaging with each other. Therefore, the plate-like members 10a, 10b, 10c are firmly connected, and the connection state is stable.

<Regarding conversion to other forms of three-dimensional structures>
The partition 1 of this embodiment is used, for example, to provide residents who have evacuated to a gymnasium or a community center in an emergency with a living space with privacy secured. The plate-shaped member 10, the connecting member 70, and the cap member 80 used for the partition 1 in an emergency can be used for other purposes other than an emergency, thereby expanding the convenience. In other words, by using the plate-shaped member 10 for other purposes in normal times and reassembling it into the partition 1 in an emergency, there is no need to prepare members required only for an emergency. By repurposing the members that are normally used for an emergency, not only can the costs for dedicated items for an emergency be reduced, but also the storage space can be reduced.

Here, conversion to other forms will be described.
14 shows a ball cage 4 for storing balls used in, for example, physical education classes at school. The ball cage 4 is formed by connecting one plate-shaped member 10a and four plate-shaped members 10b with bent connecting members 71.

Figure 15 shows a transport carrier 5 that is used, for example, to store mats M used in physical education classes at school and to transport mats M loaded on them. The transport carrier 5 is formed from a single plate-like member 10b, and casters 5a are attached inside the tube portions 37, 67 of the fitting portions 33, 63 of the side members 31, 61.

Figure 16 shows a wall protection panel 6 that is installed on the wall of a school gymnasium, for example. The wall protection panel 6 is formed by connecting multiple plate-like members 10b with straight connecting members 75. During physical education classes, etc., a ball can be thrown at the wall of the gymnasium. It can also absorb the impact when the ball hits the wall during physical education classes.

In this way, during normal times, the plate-like members 10, connecting members 70, and cap members 80 can be used as gymnasium equipment, and during emergencies, the plate-like members 10, connecting members 70, and cap members 80 that make up these equipment can be rearranged and repurposed into the required three-dimensional structure.

Other three-dimensional structures for use in emergencies, such as the partition 1 shown in Fig. 1, include the simple bed 7 shown in Fig. 17 and the simple desk 8 shown in Fig. 18. The simple bed 7 is formed by connecting six plate-shaped members 10a and two plate-shaped members 10b with connecting members 71 and 75. The simple desk 8 is formed by connecting two plate-shaped members 10a and two plate-shaped members 10c with connecting members 71 and 75.

For example, if a large number of residents evacuate to a gymnasium due to an earthquake, wind or flood damage, the ball baskets 4, transport carriers 5, and wall protection panels 6 used as gymnasium equipment are removed. These equipment items are then disassembled into their constituent parts, plate-shaped members 10, connecting members 70, and cap members 80, and reassembled as necessary into partitions 1, simple beds 7, simple desks 8, etc.

The plate-shaped member 10 has recesses 17 and protrusions 18 formed on its sides. The recesses 17 and protrusions 18 are alternately formed on opposing sides. The length of the long side of the plate-shaped member 10a is equal to the length of one side of the plate-shaped member 10b, and the length of the short side of the plate-shaped member 10a is equal to the length of one side of the plate-shaped member 10c. The length of the long side of the plate-shaped member 10a is twice the length of the short side.

Therefore, for example, it is easy to understand that a larger rectangular flat plate can be formed by assembling the long side of plate member 10a to one side of plate member 10b. Similarly, it is easy to understand that a larger rectangular flat plate can be formed by assembling the short side of plate member 10a to one side of plate member 10c. This makes it easy to connect not only plate members 10a, 10b, and 10c of the same type, but also plate members 10a, 10b, and 10c of different types. By combining the three types of plate members 10a, 10b, and 10c like a puzzle, a three-dimensional structure of an appropriate size can be easily formed. In addition, since the engagement state is easy to understand, even children can easily assemble it.

The partition 1 of this embodiment provides the following effects.
(1) On the side of the plate-shaped member 10, a plurality of protrusions 18 protruding in a direction along the main surface of the plate-shaped member 10 and recesses 17 recessed relatively to the protrusions 18 are formed. The recesses 17 and the protrusions 18 on the opposing sides of the plate-shaped member 10 are formed alternately.

Therefore, when connecting the plate-like members 10, the convex portion 18 of one of the pair of plate-like members 10 can be easily engaged with the concave portion 17 of the other plate-like member 10. When connecting with the bent connecting member 71 and the straight connecting member 75, the pair of plate-like members 10 are engaged, so even if the plate-like members 10 are not being held, the plate-like members 10 are prevented from unexpectedly falling over or deforming. The connecting work can be performed even if the worker is not holding the pair of plate-like members 10. Therefore, the work efficiency when assembling the partition 1 can be improved.

(2) The plate-shaped member 10 has a side edge on which the recessed portion 17 and the protruding portion 18 are formed, the recessed portion 17 and the protruding portion 18 being approximately the same size.
Therefore, the two plate-like members 10 can be easily engaged and temporarily fixed by simply butting the sides of the two plate-like members 10 together. Even without an instruction manual, the assembly method can be easily understood by simply looking at the plate-like members 10. The partition 1, etc. can be smoothly assembled even in a chaotic situation such as an emergency.

(3) Side members 31, 61 are attached to the plate-like member 10. By attaching the side members 31, 61, a recess 17 and a protrusion 18 with approximately the same longitudinal length are formed on the side of the plate-like member 10. The longitudinal lengths of the recess 17 and the protrusion 18 are approximately equal. In other words, the shape and dimensions of the side members 31, 61 are set so that by attaching them, the sides of the two plate-like members 10 engage with each other with almost no gap between them.

Therefore, when two plate-like members 10 are connected, the gap formed between the engaged recessed portion 17 and protruding portion 18 is small. This suppresses rattling of the two plate-like members 10 that are engaged and temporarily fastened, and the engaged state is stable. In addition, the connected state is stable even after connection with the bent connecting member 71 and the straight connecting member 75. When used as a partition 1, a private space can be stably maintained.

(4) The plate-like members 10 are formed with through holes 14 that penetrate in the thickness direction, and the pair of plate-like members 10 are connected by fitting the bent connecting member 71 and the straight connecting member 75 into the through holes 14.

Therefore, it is possible to firmly fix the two plate-like members 10. Even when a load due to a heavy object or the like is applied, the connected state is stably maintained.
(5) The plate-shaped member 10 includes a rectangular plate material 11 and side members 31, 61 attached to the side edges of the plate material 11. The recesses 17 and protrusions 18 on the side edges of the plate-shaped member 10 are formed by the side members 31, 61.

Therefore, for example, even if the plate material 11 does not have the recessed portion 15 and the protruding portion 16, the plate-shaped member 10 can have the recessed portion 17 and the protruding portion 18 formed therein. There is no need to form the plate material 11 into a complex shape.

(6) The side members 31, 61 attached to the plate-shaped member 10 are of only two different shapes. By combining them, the plate-shaped member 10 is formed with a recess 17 and a protrusion 18 that are equal in length in the longitudinal direction.

Therefore, there is no need to prepare side members with the same length as the sides of the plate-shaped member 10, and the size of the side members can be reduced. In addition, because there are only two types of miniaturized side members, the number of parts constituting the plate-shaped member 10 can be reduced.

(7) The side members 31 , 61 have main body portions 32 , 62 extending along the side of the plate material 11 and fitting portions 33 , 63 that fit into the through holes 14 of the plate material 11 .
Therefore, the side members 31, 61 can be securely fixed to the plate material 11. The side members 31, 61 can be prevented from falling off from the plate material 11.

(8) The side member 31 has a main body 32 and a fitting portion 33 that are integrally formed. It also has an outer main surface member 41 attached to the outer surface of the partition 1, and an inner main surface member 51 attached to the inner surface. The same is true for the side member 61.

Therefore, even if the plate material 11 has a through hole 14, it is easy to attach to the plate material 11. In addition, by fitting the fitting portion 33 into the through hole 14, it can be firmly fixed to the plate material 11.

(9) The outer main surface member 41 and the inner main surface member 51 are assembled together by the engagement between the engaging projections 46 and the engaging recesses 56 and the engagement between the engaging projections 47a and the engaging recesses 57a.
Therefore, although the structure is simple, it can be firmly assembled.

(10) A plurality of barbed protrusions 48 are formed on the inner surface of the outer main surface side plate 45b of the outer main surface member 41 and on the inner surface of the inner main surface side plate 55b of the inner main surface member 51, aligned in the longitudinal direction.

Therefore, when the side member 31 is attached to the plate material 11, the barbed protrusions 48 enter and are fixed into the cells S of the hollow structure 12 that constitutes the plate material 11. The side member 31 is securely fixed to the plate material 11, improving the bending strength of the plate-like member 10. The same applies to the side member 61.

(11) The plate material 11 is composed of a hollow structure 12 having a plurality of cells S formed therein.
Therefore, it is lightweight yet has adequate strength.

(12) The plate material 11 is made of a thermoplastic resin material.
Therefore, it has excellent durability. Even if the plate-shaped member 10 used in normal times is used in an emergency, the lack of strength is suppressed. It can withstand conversion between normal times and emergency times. In addition, it is easy to cut and process to an appropriate size. Furthermore, if it is broken, it can be recycled, and it can be molded using recycled materials.

The above embodiment can be modified as follows. The above embodiment and the following modified examples can be combined as long as they are not technically inconsistent.

- In the above embodiment, the plate-shaped member 10 has side members 31, 61 attached to the plate material 11, but the side members 31, 61 do not have to be attached. In this case, the plate-shaped member 10 only needs to be composed of the plate material 11 on which the recessed portion 15 and the protruding portion 16 are formed. In this case, the recessed portion 15 of the plate material 11 becomes the recessed portion 17 of the plate-shaped member 10, and the protruding portion 16 of the plate material 11 becomes the protruding portion 18 of the plate-shaped member 10.

- The side edge 13 of the plate material 11 may not have the recess 15 and the protrusion 16 formed thereon. In other words, the side edge 13 of the plate material 11 may be formed in a straight line. Also, the protrusion 16 may not be formed to correspond to all of the protrusions 34a, 34b, 64a, 64b formed on the side members 31, 61, but may be formed to correspond to only some of them.

In the plate material 11 of the above embodiment, the recesses 15 and the protrusions 16 are formed on the side edges 13 in a rectangular shape when viewed from the front. However, the shapes of the recesses 15 and the protrusions 16 are not limited to this.
The shapes of the side members 31, 61 are not limited to those in the above embodiment. Any shape may be used as long as the side of the plate-like member 10 is formed with a recess 17 and a protrusion 18 having approximately the same length in the longitudinal direction, and the recess 17 and the protrusion 18 are positioned differently on the opposing side.

In the plate-shaped member 10 of the above embodiment, the side members 31, 61 are attached to form a recess 17 and a protrusion 18 that are rectangular in front view. The shapes of the recess 17 and the protrusion 18 are not limited to this. For example, the recess 17 or the protrusion 18 may be rhombic, semicircular, or trapezoidal in front view. When a pair of plate-shaped members 10 are assembled together, a gap may be formed between the recess 17 of one plate-shaped member 10 and the protrusion 18 of the other plate-shaped member 10.

- In the above embodiment, the side members 31, 61 are attached to the side 13 of the plate material 11 without any gaps, but this is not limited to this. The side members 31, 61 may be attached to a part of the side 13. As long as the pair of plate-like members 10 can engage with the recessed portion 17 and the protruding portion 18, there is no particular limit to the number and locations of the side members 31, 61 attached.

The shape and size of the plate-like member 10 are not limited to those in the above embodiment.
In addition to the plate-like members 10a, 10b, and 10c, plate-like members 10 of different sizes and shapes may be combined.

The outer main surface member 41 and the inner main surface member 51 of the side member 31 are attached by the engagement of the engagement protrusion 46 with the engagement recess 56 and the engagement protrusion 47a with the engagement recess 57a, but the engagement structure is not limited to this.

The barbed projections 48 formed on the inner surfaces of the outer main surface side plate 45b and the inner main surface side plate 55b of the side member 31 may be omitted. The same applies to the side member 61.
The fitting portion 33 of the side member 31 has a tubular portion 37 extending in the thickness direction of the side member 31, but the shape of the fitting portion 33 is not limited to this. For example, the base portion 36 extending from the main body portion 32 may be semicircular, and the tubular portion 37 may be a shape obtained by cutting out a part of a cylinder.

Although the side member 31 has the main body 32 and the fitting portion 33 formed integrally therewith, they may be separate bodies. The same is true for the side member 61.
Of the side members 31, the outer main surface member 41 may have the outer main surface body portion 42 and the outer main surface fitting portion 43 formed separately, and the inner main surface member 51 may have the inner main surface body portion 52 and the inner main surface fitting portion 53 formed integrally. Conversely, the outer main surface member 42 and the outer main surface fitting portion 43 may be formed integrally, and the inner main surface member 51 may have the inner main surface body portion 52 and the inner main surface fitting portion 53 formed separately. The same applies to the side member 61.

The shape and size of the side members 31, 61 are not limited to those in the above embodiment. For example, the length L1 of the convex portion 34a may be made longer than that in the above embodiment, and the length of the convex portion 18 on the side of the plate-like member 10 may be made longer. If the length of the convex portion 18 is longer, the strength of the plate-like member 10 can be improved.

- The bent connecting member 71 and the straight connecting member 75 are not limited to the shapes in the above embodiment. For example, they may be string-like members that are passed through the fitting portions 33, 63 of the side members 31, 61 to connect the plate-like members 10 together.

- When assembling the ball cage 4 shown in Figure 14, it may be difficult to attach the bent connecting member 71 in the inner part where the plate-like members 10 intersect at right angles. This is because the protruding length of the connecting fitting portion 77 of the bent connecting member 71 is relatively long. Therefore, it is difficult to insert the two connecting fitting portions 77 of the bent connecting member 71 at once into the tubular portions 37, 67 of the side members 31, 61 attached to the plate-like members 10 that intersect at right angles.

Therefore, the length of projection of the connecting fitting portion 73 of the bent connecting member 71 from the connecting body portion 72 may be shorter than that in the above embodiment.
As shown in Fig. 19, the bent connecting member 90 has a connecting body 91 and a connecting fitting portion 92. The connecting body 91 is formed in a shape in which a pair of thin plate materials are integrally connected so as to be perpendicular to each other. A grip portion 93 that is shaped to connect the pair of thin plate materials is integrally formed with the connecting body 91. The grip portion 93 reinforces the bent connecting member 90 and is a part that can be held by the user during the connecting operation.

The connecting fitting portion 92 is formed in a cylindrical shape that protrudes perpendicularly from each thin plate material that constitutes the connecting body portion 91. The protruding length of the connecting fitting portion 92 from the connecting body portion 91 is about several mm. In addition, a female screw 92a is formed on the inner peripheral surface of the connecting fitting portion 92.

The cap member 94 that engages with the bent connecting member 90 has a flange portion 95 and a cylindrical portion 96. The cylindrical portion 96 has a male screw 96a formed on the outer circumferential surface at the tip thereof.
When connecting a pair of plate-like members 10 at a right angle, the connecting fitting portion 92 of the bent connecting member 90 is inserted into the tubular portions 37, 67 of the side members 31, 61 from the inner surface of the partition 1. At this time, since the protruding length of the connecting fitting portion 92 is about several mm, even if the plate-like members 10 intersect at a right angle, the connecting fitting portions 92 on both sides can be inserted into the tubular portions 37, 67 at once. In addition, since the resin material constituting the bent connecting member 90 has a certain degree of elasticity, it is easy to insert into the tubular portions 37, 67 without requiring a large force. The bent connecting member 90 is reinforced by forming a grip portion 93 on the connecting main body portion 91, but since the protruding length of the connecting fitting portion 92 is short, it is easy to insert into the tubular portions 37, 67 even if the connecting main body portion 91 is reinforced. The protruding length of the connecting fitting portion 92 can be appropriately set depending on the plate thickness of the connecting main body portion 91, the shape of the grip portion 83, and the elasticity of the resin material.

After the bent connecting member 90 is attached, the tubular portion 96 of the cap member 94 is inserted into the connecting fitting portion 92 of the bent connecting member 90 from the outer surface of the partition 1. The cap member 94 is attached to the bent connecting member 90 by screwing the female screw 92a of the connecting fitting portion 92 into the male screw 96a of the cap member 94. The connecting fitting portion 92 and the cap member 94 are threaded, allowing for a strong fixation. Furthermore, because the fixing is done by screwing, the assembly procedure can be easily understood even without a manual. Even a child can easily assemble it.

The connecting fitting portion 77 of the straight connecting member 75 may also be formed in the same shape as the connecting fitting portion 92 .
The bent connecting member 71 and the cap member 80 are assembled by the engagement between the engaging protrusions 73a and the engaging recesses 82b, and between the engaging recesses 73b and the engaging protrusions 82a, but the engagement structure is not limited to this.

The connecting fitting portion 73 of the bent connecting member 71 may be engaged with the plate-like member 10 by a screw, an elastic body, or the like. Engaging with a screw improves the rigidity of the three-dimensional structure. The same applies to the straight connecting member 75 and the bent connecting member 90.

The cap member 80 may be omitted. Also, the cap member 80 may be attached to only a portion of the bent connecting member 71 and the straight connecting member 75.
In the partition 1 of the above embodiment, the cap member 80 is attached to the connecting fitting portion 73 of the bent connecting member 71 and the connecting fitting portion 77 of the straight connecting member 75, and the cap member 80 is not attached to the portion to which the bent connecting member 71 and the straight connecting member 75 are not attached. This is not limited to this, and the cap member 80 may be attached to the portion to which the bent connecting member 71 and the straight connecting member 75 are not attached. In other words, the cap member 80 may be attached to all the tubular portions 37, 67 formed on the side members 31, 61. By attaching the cap member 80, the tubular portions 37, 67 of the side members 31, 61 are blocked, and privacy inside the partition 1 can be ensured. The partition 1 may be completed in a form in which all the tubular portions 37, 67 of the side members 31, 61 are blocked by the cap member 80.

- When attaching the cap member 80 to a portion where the bent connecting member 71 and the straight connecting member 75 are not attached, a member that engages with the cap member 80 may be attached. This can prevent the cap member 80 from falling off.

- In the plate-like member 10 of the above embodiment, the plate material 11 is formed by cutting the hollow structure 12 into a predetermined shape. Therefore, when the side members 31 and 61 are attached to the side edges, unevenness is formed on the main surface of the plate-like member 10 by the thickness of the outer main surface side plate 45b and the inner main surface side plate 55b of the side member 31. The same applies to the side member 61. In this regard, the thickness of the plate material 11 at the part where the side members 31 and 61 are attached may be made thinner than other parts. By making the thickness of the outer main surface side plate 45b and the inner main surface side plate 55b of the side member 31 thinner, the surface of the plate-like member 10 can be made flat. Therefore, for example, when applied to a wall protection panel 6 as shown in FIG. 17, it is possible to prevent a ball thrown toward the wall protection panel 6 from bouncing in an unintended direction.

The plate material 11 is composed of a hollow structure 12 with multiple cells S formed inside, but the plate material 11 is not limited to this. For example, it may be cardboard made of paper, or it may be a plate material made of urethane foam.

- In the plate-shaped member 10, the side members 31, 61 are attached to the side 13 of a single plate material 11, but the side members 31, 61 may also be attached to a stack of multiple plate materials 11.

- In the above embodiment, the hollow structure 12 is formed by folding and forming the uneven sheet material 100 as the core layer 20 to form a honeycomb structure in which hexagonal cells S are partitioned inside the core layer 20, but the shape of the uneven sheet material forming the core layer 20 is not limited to this. For example, the uneven sheet material described in Japanese Patent No. 4,368,399 may be folded and formed to form a honeycomb structure.

- In the hollow structure 12 of the above embodiment, hexagonal columnar cells S are partitioned and formed inside the core layer 20, but the shape of the cells S is not particularly limited. For example, they may be polygonal, such as a square column or an octagonal column, or cylindrical. The shape of the cells S may also be a truncated cone. In this case, cells of different shapes may be mixed.

The cells formed inside the core layer 20 do not have to be adjacent to each other, and gaps (spaces) may exist between the cells. An example of a core layer with this configuration is described in JP-A-10-156985.

The core layer 20 is not limited to being divided into columnar cells. For example, it may be a core layer having a predetermined uneven shape with sheet layers bonded to both the top and bottom surfaces. An example of a core layer with this configuration is described in JP 2014-205341 A. It may also be a plastic cardboard with a harmonica-shaped cross section.

In the above embodiment, the hollow structure 12 is formed by bonding the skin layers 24, 25 to both sides of the core layer 20. However, at least one of the skin layers 24, 25 may be omitted.
Another sheet material may be joined to the outer surface of the hollow structure 12 on the skin layers 24, 25 side. This sheet material is not limited to synthetic resin, and may be, for example, a metal sheet (metal foil), a steel plate, paper, cloth, etc. Furthermore, the skin layers 24, 25 themselves may be made of a metal sheet (metal foil), paper, cloth, etc.

-Resins or additives that impart functionality may be added to the thermoplastic resin that constitutes the hollow structure 12. For example, flame-retardant resins or additives may be added, or deodorants, fragrances, weather resistance agents, etc. may be added.

- The plate material 11 may have a through hole formed on either the upper surface 12a or the lower surface 12b of the hollow structure 12 that connects the inside and outside of the cell S. By forming the through hole, the plate material 11 can be given sound-absorbing properties, improving livability when used as a partition 1, etc. in an emergency such as a disaster.

1...Partition (three-dimensional structure)
10: Plate-shaped member 11: Plate material 14: Through hole 31, 61: Side member 32, 62: Main body portion 33, 63: Fitting portion 41: Outer main surface member (first main surface member, second main surface member)
51...Inner main surface member (first main surface member, second main surface member)
70: connecting member 71, 90: bent connecting member (connecting member)
75...Straight connecting member (connecting member)

Claims (5)

A three-dimensional structure assembly kit capable of assembling a three-dimensional structure by connecting a plurality of rectangular plate-like members,
a pair of plate-like members and a connecting member that connects the pair of plate-like members,
A plurality of protruding portions protruding in a direction along a main surface of the plate-like member and recessed portions recessed in a direction along the main surface relative to the protruding portions are formed on a side edge of the plate-like member,
A three-dimensional structure assembly kit characterized in that the sides of a pair of plate-shaped members are butted together, the convex portion of one plate-shaped member is engaged with the concave portion of the other plate-shaped member, and the pair of plate-shaped members are configured to be connected with the connecting member. The plate-like member has a through hole formed therethrough in a thickness direction,
2. The three-dimensional structure assembly kit according to claim 1, wherein the pair of plate-like members can be connected together by fitting the connecting member into the through hole. The plate-shaped member includes a rectangular plate material and a side member attached to a side of the plate material,
3. The three-dimensional structure assembly kit according to claim 2, wherein the protrusions and the recesses are formed on the side members. The three-dimensional structure assembly kit according to claim 3, characterized in that the side member has a main body portion extending along the side and a fitting portion that fits into the through hole. The main body and the fitting portion are integrally formed,
The three-dimensional structure assembly kit according to claim 4, characterized in that the side members comprise a first main surface member attached to one main surface side of the plate material and a second main surface member attached from the other main surface side.