JP7588953B2 - Partition units and partitions - Google Patents

Description

The present invention relates to a partition unit, which is a unit that constitutes a partition, and a partition equipped with this unit.

Conventionally, simple partitions have been used in temporary locations such as evacuation shelters and event spaces. Such partitions are required to be easy to assemble and easy to dispose of.
In view of this, partitions that are easier to assemble and dispose of have been proposed. For example, a partition that is assembled by combining cylindrical structures made of round paper tubes has been considered (see Non-Patent Document 1).

Shigeru Ban Architects website, "Simple Partition System for Evacuation Shelters 4", [online], [searched October 15, 2018], Internet <http://www.shigerubanarchitects.com/SBA_NEWS/pps4/pps4.pdf>

However, since a cylindrical structure is used for the above-mentioned partition, the structure is likely to roll, which may lead to a decrease in the handleability, such as the ease of placing and storing the structure.
Therefore, there is room for improvement in terms of improving the ease of handling of the partition.

The partition unit and partition disclosed herein were devised in consideration of the above-mentioned problems, and one of the objectives is to improve ease of use. However, this objective is not the only objective. Another objective of the present invention is to achieve actions and effects that cannot be obtained with conventional technology, which are derived from the configurations shown in the "Mode for carrying out the invention" described below.

The partition unit disclosed herein has a rectangular tubular structure made of a rectangular paper tube.
The partition disclosed herein includes the above-mentioned partition unit.

The disclosed partition unit and partition can improve ease of use.

FIG. FIG. 2 is a perspective view showing a partition. FIG. 4 is an exploded perspective view showing a joint mechanism of the partition. FIG. 13 is a perspective view showing a joint mechanism of a preferred embodiment of the partition. FIG. 13 is a perspective view showing a main part of a partition according to a modified example. FIG. 11 is an exploded perspective view showing a main part of a partition according to another modified example.

Hereinafter, a partition unit (hereinafter, abbreviated as "unit") and a partition as embodiments will be described.
The partition is assembled by combining the units. In the present embodiment, a square tubular paper tube (hereinafter, referred to as a "square paper tube") is used for the unit.
In the following embodiment, a partition assembled on a horizontal plane is taken as an example for explanation, and horizontal and vertical directions are used for explanation. The horizontal direction is further divided into four directions: front (indicated by "F" in the drawings), rear (indicated by "B" in the drawings), left (indicated by "L" in the drawings), and right (indicated by "R" in the drawings). The vertical direction is further divided into two directions: downward (indicated by "D" in the drawings) and upward (indicated by "U" in the drawings).

I. EMBODIMENT
[1. Configuration]
In this section [1], the square paper tube is described in subsection [1-1], the partition provided with a square tubular structure made of the square paper tube is explained in subsection [1-2], and the joint mechanism that connects the partition structures is described in detail in subsection [1-3].

[1-1. Square paper tube]
First, the rectangular paper tube T will be outlined with reference to FIG.
The rectangular paper tube T is a hollow rectangular tube made of paper wound in multiple layers, and has an elongated shape extending along a tube axis (shown by a dashed line in FIG. 1). Here, a rectangular paper tube T is shown as an example.
The above-mentioned rectangular paper tube T is formed through the following steps 1 and 2.
Step 1: A base paper (not shown) is wound around a rectangular prism-shaped mandrel (not shown). Step 2: The wound base paper is removed from the mandrel.

In step 1, the base paper is wound in the manner exemplified below.
・ Flat winding method: The base paper is wound in a direction perpendicular to the axis of the mandrel ・ Spiral winding method: The base paper is wound in a direction inclined to the axis of the mandrel In step 2, the wound base paper is removed from the mandrel, and a hollow space corresponding to the rectangular column-shaped mandrel is formed inside the stacked base paper. Among them, the square paper tube T (spiral wound paper tube) obtained by the spiral winding method is preferable because it has stronger strength than the square paper tube T (flat wound paper tube) obtained by the flat winding method. The number of times the base paper is wound is not particularly limited, but from the perspective of the balance between strength and weight, it is preferable to wind it three times or more and five times or less.

Normal paper tube base paper is used as the base paper for the square paper tube T. Paperboard is suitable as the paper tube base paper, and multi-layered paperboard with two or more layers is preferable. Other materials such as laminated paper, plastic film, or metal foil may be used in addition to or in place of part of the paper tube base paper. By using other materials as the base paper, especially on the outside of the square paper tube T, the durability and strength of the square paper tube T can be increased, and functionality such as waterproofness or conductivity can be added to the square paper tube T. In addition, the surface of the square paper tube T can be covered with kraft paper, colored paper, or printed base paper to enhance aesthetics.

The cross-sectional shape of the square paper tube T along the direction perpendicular (intersecting) to the tube axis (hereinafter simply referred to as "cross-sectional shape") is not particularly limited as long as it is quadrangular, and may be rectangular or square. However, the cross-sectional shape of the square paper tube T that serves as a support as a partition is preferably square or approximately square. Approximately square means that the value of "longer width of square paper tube T" divided by "shorter width of square paper tube T" is about 1.0 to 1.6, preferably 1.0 to 1.4. The width of the square paper tube T is preferably 5 cm to 12 cm, more preferably 6 to 11 cm, and even more preferably 7 to 10 cm. By making the width of the square paper tube T equal to or greater than the above lower limit, sufficient strength can be obtained, and by making the width equal to or less than the upper limit, it is suitable for assembly workability. The length of the square paper tube T is determined depending on its application, but is about 160 cm to 220 cm. The thickness of the paper layer of the square paper tube T is about 2 mm to 8 mm, preferably 3 mm to 6 mm. By making the thickness of the paper layer of the square paper tube T equal to or greater than the above-mentioned lower limit, sufficient strength can be obtained, and by making the thickness equal to or less than the upper limit, the weight can be reduced, which is suitable for assembly workability.
If the strength of the square paper tube T is the same, it tends to be lighter than a cylindrical paper tube (hereinafter referred to as a "round paper tube"). Specifically, due to the difference in cross-sectional shape, the square paper tube T having a rectangular cross-sectional shape tends to ensure a greater strength per unit weight than the round paper tube having a circular cross-sectional shape.
As described above, the square paper tube T, which is lighter than a round paper tube having the same strength, is used as a partition, which will be described next.

[1-2. Partitions]
The partition P will now be described in outline with reference to FIG.
The partition P is also called a "partition" and is a partition that divides a space into small rooms (a "large room" so to speak). Here, a partition P that divides a space into a plurality of small rooms R (only one of which is marked with a reference symbol in FIG. 2) each having a rectangular parallelepiped shape is shown as an example.
A plurality of pillars A (only one of which is indicated by a reference number in FIG. 2 ) are erected on the partition P, and a beam B (only one of which is indicated by a reference number in FIG. 2 ) is laid horizontally to connect adjacent pillars A. The pillars A are arranged along the edge connecting the upper and lower surfaces of a rectangular parallelepiped that corresponds to the shape of the small room R. The beam B is arranged along the edge surrounding the upper surface of the rectangular parallelepiped that corresponds to the shape of the small room R.

This partition P has a partition material C (indicated by a two-dot chain line in Figure 2 and marked at only one point) that hangs down like a curtain that can be opened or closed attached to the beam B. For example, a sheet-like material such as cloth, film, paper, or cardboard is used for the partition material C. When a beam B is inserted into the inside of a tube formed by fastening a part of the partition material C with a fastening member such as a safety pin or clip, the partition material C is movable along the beam B, and the partition material C enables communication and shielding between the small rooms R.

In addition, holes can be drilled in the components that make up the pillars A and beams B (the first member 1 and the second member 2 described below) to hang hangers, lights, etc., as long as the strength of the pillars A and beams B is not compromised.
The partition P can be disassembled into structural units, and the units are assembled by combining them together. For example, structural units such as a single member of the support A, a single member of the beam B, and a modular member in which the support A and the beam B are connected are examples of the units.

[1-3. Joint mechanism]
Next, the joint mechanisms M1 to M3 will be described with reference to FIG.
Specifically, the following description will be given by way of example of a first joint mechanism M1 and a second joint mechanism M2 that connect the pillar A and the beam B, and a third joint mechanism M3 that connects the beams B together. Note that, in Fig. 3, the joint mechanisms M1 to M3 are collectively illustrated for the sake of illustration, but the partition P can also be formed by using any one of the joint mechanisms M1 to M3 alone.

--First joint mechanism--
The first joint mechanism M1 includes a first member 1 (first structure), a second member 2 (second structure), and a third member 3 (third structure).
One of the first member 1 and the second member 2 corresponds to the pillar A, and the other corresponds to the beam B. The third member 3 is a connecting member between the first member 1 and the second member 2.

The above members 1 to 3 are a square tubular structure made of a square paper tube T (see FIG. 1).
The third member 3 is a member that is shorter than the first member 1 and the second member 2. The third member 3 is attached to the first member 1 at a location where the first member 1 and the second member 2 are connected.
The modular member of the first member 1 and the third member 3 attached in this manner and the modular member to which the second member 2 is connected form a unit of the partition P. The single member of the second member 2 also forms a unit of the partition P.

This first joint mechanism M1 is provided so that the second member 2 and the third member 3 can be fitted together. Note that it is preferable that the first joint mechanism M1 be capable of freely fitting and disengaging the second member 2 and the third member 3. Specifically, a part of a rectangular prism forming the shape of the internal space in the second member 2 and the outer shape of the third member 3 are set to be equivalent in size.
In the above-described first joint mechanism M1, the third member 3 is fitted into the second member 2 and abutted against the first member 1, thereby resulting in a first assembled state in which the second member 2 is connected to the first member 1 via the third member 3. Conversely, the third member 3 is removed from the second member 2 in the first assembled state, thereby resulting in a first disassembled state in which the second member 2 connected to the first member 1 is detached. In addition, when the first member 1 and the third member 3 are fastened together with tape in the first assembled state, the connected members 1 and 3 are fixed to each other.

FIG. 3 illustrates the following members 1 to 3.
First member 1: A support pillar A extending up and down with its cylindrical surface facing in each of the front, back, left and right directions
Second member 2: Beam B extending forward and backward with cylindrical surfaces facing in each of the up, down, left and right directions
Third member 3: A connecting member that is attached with its cylindrical surface facing in each of the up, down, left and right directions. Note that the configuration is not limited to one in which the third member 3 is fitted inside the second member 2, and a configuration in which the second member 2 is fitted inside the third member 3 may also be adopted.

Now, with reference to FIG. 4, a first joint mechanism M1' as a preferred embodiment of the first joint mechanism M1 will be described.
The cross-sectional shape (cross-sectional structure) of the third member 3A (third structure) in the first joint mechanism M1' is the same as the cross-sectional shape (cross-sectional structure) of the first member 1A (first structure) or the second member 2A (second structure, in FIG. 4 , the support A of the first member 1A and the beam B of the second member 2A are exemplified) that become the support A. Specifically, a member obtained by cutting the first member 1A on a horizontal plane has the same shape as the third member 3A. That is, the cross-sectional shapes along the horizontal direction of the first member 1A and the third member 3A are the same as each other.

In this case, the cylindrical surface of the support A, which is the first member 1A, and the cylindrical surface of the third member 3A are bonded to each other (the surfaces of the square paper tube T are bonded and fixed to each other). This surface bonding allows the first member 1A and the third member 3A to be firmly bonded and fixed. In addition, the third member 3A can be obtained by cutting the square paper tube T used in the first member 1A to a specified dimension (the top and bottom dimensions in Figure 4). Therefore, the square paper tube T that becomes the first member 1A and the third member 3A can be shared, eliminating the need to prepare a square paper tube T of a new shape.

In the above-mentioned joint mechanism M1', the outer shape of the third member 3A when viewed from the direction in which the second member 2A is fitted (hereinafter referred to as the "fitting direction") and the outer shape of the hollow space of the second member 2A when viewed from the direction opposite to the fitting direction are similar.
Specifically, the horizontal inner dimension a of the second member 2A (the inner dimension of one side of the cross-sectional shape) is set to be the same as the horizontal outer dimension a' (the outer dimension of one side of the cross-sectional shape) of the third member 3A (first member 1A). Also, the heightwise inner dimension b of the second member 2A (the inner dimension of the other side of the cross-sectional shape) is set to be the same as the heightwise outer dimension b' (the outer dimension of the other side of the cross-sectional shape) of the third member 3A. However, the inner dimension a of the second member 2A may be slightly larger than the outer dimension a' of the third member 3A, and similarly, the inner dimension b of the second member 2A may be slightly larger than the outer dimension b' of the third member 3A.

By setting the dimensions as described above, the second member 2A can be fitted into the connecting member formed by the third member 3A.
The modular components of the first member 1A and the third member 3A attached in this manner, and the modular component to which the second member 2A is connected, also form a unit of the partition P, and the standalone component of the second member 2A also forms a unit of the partition P.

--Second joint mechanism--
As shown in FIG. 3, the second joint mechanism M2 is provided with a fourth member 4 in addition to the first member 1 described above.
The first member 1 of the second joint mechanism M2 is provided with a hole (hereinafter referred to as a "through hole") H that penetrates in a direction perpendicular (intersecting) to the extension direction of the first member 1. A fourth member 4 (the tip of the fourth member 4 inserted into the through hole H is shown by a two-dot chain line in FIG. 3) is provided so as to be freely insertable into and removable from this through hole H. In other words, the second joint mechanism M2 is formed of a part of the members 1 and 4 that are connected to each other.

One of the first member 1 and the fourth member 4 corresponds to the support column A, and the other corresponds to the beam B. The fourth member 4, like the first member 1, is a square tubular structure made of a square paper tube T (see FIG. 1 ).
The through hole H is a through structure in which the cylindrical surface of the first member 1 is drilled in a rectangular shape having a size corresponding to the outer shape of the fourth member 4. Here, two through holes H, a first through hole H1 and a second through hole H2, are provided. These through holes H1 and H2 are arranged at positions that overlap when viewed from the direction in which the fourth member 4 is inserted.

The modular members of the first member 1 and the fourth member 4, in which the through hole H is provided, form a unit of the partition P. The single member of the first member 1 and the single member of the fourth member 4 also form a unit of the partition P.
In the second joint mechanism M2 described above, the fourth member 4 is inserted into the through holes H1, H2 of the first member 1, thereby resulting in a second assembled state in which the fourth member 4 is connected to the first member 1. Conversely, the fourth member 4 is removed from the through holes H1, H2 of the first member 1 in the second assembled state, thereby resulting in a second disassembled state in which the fourth member 4 connected to the first member 1 is detached. In addition, when the first member 1 and the fourth member 4 are fastened with tape in the second assembled state, the connected members 1 and 4 are fixed to each other.

FIG. 3 illustrates a fourth member 4 and through holes H1 and H2 described below.
Fourth member 4: A beam B extending left and right with its cylindrical surface facing in each of the up, down, front and rear directions.
First through hole H1: a through hole H drilled in the cylindrical surface facing left in the first member 1
Second through hole H2: a through hole H drilled in the cylindrical surface facing right in the first member 1
In addition, the configuration is not limited to one in which the fourth member 4 can be inserted and removed into the through hole H of the first member 1, but a configuration in which the first member 1 can be inserted and removed into a through hole H drilled in the fourth member 4 may be adopted.

--Third joint mechanism--
The third joint mechanism M3 is provided with, in addition to the fourth member 4, a fifth member 5 connected to the fourth member 4, and a sixth member 6 that can be fitted into both of these members 4 and 5. Note that the third joint mechanism M3 in which the sixth member 6 can be freely fitted into and detached from the fourth member 4 and the fifth member 5 is preferable.
The fourth member 4 and the fifth member 5 are members extending in the same direction and correspond to the pillar A or the beam B. The sixth member 6 is a joint member between the fourth member 4 and the fifth member 5.

The fifth member 5 and the sixth member 6, like the fourth member 4, are square tubular structures made of square paper tubes T (see FIG. 1).
In this third joint mechanism M3, both the fourth member 4 and the fifth member 5 have the same cross-sectional shape and cross-sectional size. The outer shape of the sixth member 6 is set to be the same size as a part of a rectangular column that defines the internal space of these members 4 and 5. In other words, the third joint mechanism M3 is provided as a telescopic mechanism that allows the fourth member 4 and the fifth member 5 to slide relative to the sixth member 6.

A modular member consisting of two or three of these members 4, 5, and 6 constitutes a unit of the partition P. Each of the members 4, 5, and 6, which are single members, also constitutes a unit.
In the third joint mechanism M3, one side of the sixth member 6 (the lower left side in FIG. 3 ) is fitted into the fourth member 4, and the other side of the sixth member 6 (the upper right side in FIG. 3 ) is fitted into the fifth member 5, resulting in a third assembled state in which the fourth member 4 and the fifth member 5 are connected via the sixth member 6. Conversely, by removing the sixth member 6 from both the fourth member 4 and the fifth member 5 in the third assembled state, the third disassembled state is reached in which the connected fourth member 4 and fifth member 5 are detached from each other. In addition, when the fourth member 4 and the fifth member 5 are fastened with tape in the third assembled state, the connected members 4 and 5 are fixed to each other.

FIG. 3 illustrates the following members 5 and 6.
Fifth member 5: A beam B extending left and right with a cylindrical surface facing each of the up, down, front and rear directions
Sixth member 6: a coupling member extending left and right with its cylindrical surface facing up, down, front and rear. Note that the sixth member 6 is not limited to being inserted into and removed from the fourth member 4 and the fifth member 5, and a configuration in which the fourth member 4 and the fifth member 5 are inserted into and removed from the sixth member 6 may also be adopted.

[2. Action and Effects]
Since this embodiment is configured as described above, the following actions and effects can be obtained.
Since square tubular members 1 to 6 made of square paper tubes T are used for the partition P units, the units of members 1 to 6 are less likely to roll compared to when cylindrical members made of round paper tubes are used for the partitions, and the units can be stably placed and stored.
Therefore, the ease of handling of the partition P can be improved.

Furthermore, because the square paper tubes T, which are lighter than round paper tubes having the same strength, are used for the members 1 to 6, the partition P can be made lighter than a partition using cylindrical members made of round paper tubes. This also improves the handleability of the partition P.
Since the above-mentioned members 1 to 6 are connected by the joint mechanisms M1 to M3, various units such as modular members or single members can be connected to assemble the partition P. This also improves the ease of handling of the partition P. If the members 1 to 6 are made of paper materials, the recyclability and ease of disposal of the partition P can also be improved.

The first joint mechanism M1 allows the first member 1 and the second member 2 to be connected simply by fitting the second member 2 into the third member 3. If the second member 2 and the third member 3 can be freely fitted and disengaged, the connection between the members 1 and 2 can be released simply by removing the second member 2 from the third member 3. The partition P can be easily assembled in this way, which increases the ease of assembly.

Since the second joint mechanism M2 is formed from part of the members 1 and 4 that are connected to each other, it contributes to reducing the weight of the partition P and the number of units.
According to the second joint mechanism M2, the first member 1 and the fourth member 4 can be connected to each other simply by inserting the fourth member 4 into the through holes H1 and H2 of the first member 1, and the connection between the members 1 and 4 can be released simply by removing the fourth member 4 from the through holes H1 and H2. According to the third joint mechanism M3, the fourth member 4 and the fifth member 5 can be connected to each other simply by fitting the sixth member 6 into the fourth member 4 and the fifth member 5. If the sixth member 6 can be freely fitted into and removed from the fourth member 4 and the fifth member 5, the connection between the members 4 and 5 can be released simply by removing the sixth member 6 from the fourth member 4 and the fifth member 5. The second joint mechanism M2 and the third joint mechanism M3 also make it easy to assemble the partition P.

In addition, because the rectangular tubular members 1 to 6 are used, they are easier to stack than triangular or polygonal tubular members having five or more sides, and are less likely to roll than polygonal tubular members having five or more sides. This also improves the ease of handling of the partition P.
Since the partition P is assembled from units, the functions and effects of the units described above can be obtained.

[II. Others]
The above-described embodiment is merely an example, and is not intended to exclude various modifications and application of techniques not explicitly stated in the embodiment. Each configuration of the present embodiment can be modified in various ways without departing from the spirit of the embodiment. In addition, the configurations can be selected as necessary, and can be combined appropriately.

For example, as shown in FIG. 5, in addition to the members forming the pillar A' and beam B', a partition P' may be provided with an appendage D' that is attached in surface contact with the cylindrical surfaces of the pillar A' and beam B'.
The appendage D' thus attached is made of a member having at least a flat surface on its outer surface, for example a flat paperboard material (a so-called "flat angle").

Figure 5 shows, as examples of appendages D', a first appendage D1' in the form of a diagonal brace that is installed between adjacent posts A, and a second appendage D2' in the form of a flint beam that is installed across each of the beams B' that are perpendicular (intersecting) to each other. In addition to appendages D1' and D2' that are installed as reinforcing members for the partition P', appendages D' attached to any point on the posts A' or beams B' can also be used as accessory members such as hanger racks or pen holders.

Since the appendage D' is attached in face-to-face contact with the partition P' as described above, a sufficient bonding area can be secured between the pillar A' or beam B' and the appendage D', compared to when a cylindrical member made of a round paper tube is used as the partition, and the appendage D' can be securely attached to the partition P'.
Furthermore, when the reinforcing member appendages D1' and D2' are provided, a sturdy partition P' can be assembled. When the appendage D' is used as an accessory member such as a hanger rack or a pen holder, the usability of the partition P' can be improved.

Also, as shown in FIG. 6, a fourth joint mechanism M4 may be employed to connect the pillar A'' and the beam B''.
The fourth joint mechanism M4 is provided with a seventh member 7 (fourth structure) and an eighth member 8 (fifth structure) that are connected to each other. These members 7 and 8 are rectangular tubular structures made of a rectangular paper tube T (see FIG. 1 ) and are connected in a perpendicular (intersecting) position to each other. In FIG. 6 , only the two faces of the rectangular paper tube T that are on the near side in the oblique direction out of the four faces are shown by solid lines, and the main parts other than those shown by solid lines are shown by dashed lines.

One of the seventh member 7 and the eighth member 8 is a member that corresponds to the pillar A'' (the seventh member 7 is shown in FIG. 6) and the other is a member that corresponds to the beam B'' (the eighth member 8 is shown in FIG. 6).
The modular members of the seventh member 7 and the eighth member 8 form a unit of the partition P'', and the single members of the seventh member 7 and the eighth member 8 also form a unit of the partition P''.
The seventh member 7 is made of a material that is thicker than the eighth member 8. Specifically, the dimension X of the end side surrounding the hollow space in the horizontal cross section of the erected seventh member 7 is set to be larger than the dimension Y of the outer shape of the eighth member 8 extending along the horizontal direction in a direction perpendicular to the cylindrical axis in a top view.

The fourth joint mechanism M4 is provided with a notch S that allows the seventh member 7 and the eighth member 8 to be fitted into each other. That is, the fourth joint mechanism M4 is formed by parts of the members 7 and 8.
The cut-out portion S illustrated here includes a first cut-out portion S1 cut into the seventh member 7 and a second cut-out portion S2 cut into the eighth member 8.
The members 7 and 8 are fitted together via the notches S1 and S2, thereby connecting the seventh member 7 and the eighth member 8. When this fitting is released, the connection between the seventh member 7 and the eighth member 8 is also released, and either one of the seventh member 7 and the eighth member 8 can be removed from the other.

The first recess portion S1 is composed of two (a pair of) notches provided on the cylindrical surface of the seventh member 7, and is cut linearly from the end of the seventh member 7 in the extending direction along the extending direction of the seventh member 7. The dimension Z at which the notches constituting the first recess portion S1 are farthest apart is set to be slightly larger than the dimension Y described above.
As shown by the two-dot chain line in FIG. 6, in addition to the two slits, a portion cut away between the two slits may be the first recess portion S1.

The second cut portion S2 is composed of a linear cut that is provided across three of the four adjacent cylindrical surfaces of the eighth member 8, and is cut in a U-shape along a plane perpendicular to the extension direction of the eighth member 8, slightly inside the end of the extension direction of the eighth member 8.
The cut-out portions S1 and S2 illustrated here are set so that the first cut-out depth dimension L1 of the first cut-out portion S1 and the second cut-out depth dimension _L2 of the second cut-out portion S2 are set so that the eighth member 8 extends along the end face of the seventh member 7 when the seventh member ₇ and the eighth member 8 are connected. In detail, the sum (L1 + L2 + _{L3 )} of the first depth dimension _L1 , the second depth dimension _L2, and the thickness dimension _L3 of the paper layer in the eighth member ₈ is set to be equal or approximately equal to the outer dimension _L4 of the eighth member 8 in the fitting direction.

When the seventh member 7 and the eighth member 8 are connected, the eighth member 8 is clamped at the portions of the seventh member 7 on both sides of the first recess S1. This restricts the movement of the eighth member 8 in the direction in which the notches of the first recess S1 are aligned. In addition, the seventh member 7 is clamped at the portions of the second recess S2 on both sides of the extension direction of the eighth member 8, restricting the movement of the eighth member 8 in the extension direction of the eighth member 8.

The fourth joint mechanism M4, which connects the members 7 and 8 at the above-mentioned notches S1 and S2, is formed from part of the members 7 and 8, which contributes to reducing the weight of the partition P'' and the number of units.
Furthermore, the members 7 and 8 can be connected to each other simply by fitting the first recess S1 into the second recess S2. The members 7 and 8 can also be easily detached from each other by releasing the fitting between the first recess S1 and the second recess S2.

It should be noted that the first recess portion S1 may be omitted from the recess portion S. When a recess portion S having only the second recess portion S2 is employed in this manner, the partition P" unit can be simplified in configuration. In this case, movement of the eighth member 8 in the direction in which the recesses of the first recess portion S1 are aligned is not restricted, and there is a risk that the stability of the eighth member 8 connected to the seventh member 7 may be slightly reduced.
Therefore, in order to fix the connected state of the seventh member 7 and the eighth member 8, a paperboard material (hereinafter referred to as an "angle") 9 having an L-shape in side view and consisting of plate-like parts bent at right angles to each other may be attached to the fourth joint mechanism M4. If the angle 9 is fixed to both of the connected members 7, 8 with anchor members 10 such as bolts and nuts, the connected state of the members 7, 8 can be reliably maintained.

Additionally, various known joint mechanisms may be used in addition to or in place of the above-described joint mechanisms M1 to M4.
The attachment method for the third member 3 and the auxiliary body D' includes not only attachment methods using adhesive tape or glue, but also various other known attachment methods.

A, A', A" Support B, B', B" Beam C Partition material D' Accessory D1' First accessory D2' Second accessory H Through hole H1 First through hole H2 Second through hole _L1 , _L2 , _L3 , _L4 , X, Y, Z Dimensions M1 First joint mechanism M2 Second joint mechanism M3 Third joint mechanism M4 Fourth joint mechanism P, P', P" Partition R Small room S Cut-out portion S1 First cut-out portion S2 Second cut-out portion T Square paper tube 1 First member 2 Second member 3 Third member 4 Fourth member 5 Fifth member 6 Sixth member 7 Seventh member 8 Eighth member 9 Angle 10 Anchor member

Claims (4)

A partition unit is assembled into a partition by combining units that are structural units of a partition, each of which has a beam connecting adjacent supports,
It is equipped with a joint mechanism that connects square tubular structures made of square paper tubes together,
the joint mechanism includes a first structure and a second structure that are connected to each other in the structure, and a third structure that is attached to the first structure , the first structure serves as the support of the partition, the second structure serves as the beam of the partition, and the third structure and the second structure are provided so as to be able to be fitted together;
The outer shape of the third structure as viewed from the direction in which the second structure is fitted and the outer shape of the hollow space of the second structure as viewed from the direction opposite to the direction in which the second structure is fitted are similarly formed,
the first structure, the second structure, and the third structure are rectangular tubular structures made of the square paper tube,
The square paper tube used in the third structure has the same cross-sectional structure as the square paper tube used in the first structure,
The third structure is a partition unit obtained by cutting the square paper tube used in the first structure. 2. The partition unit according to claim 1, wherein the rectangular paper tube is a spiral wound paper tube . 3. The partition unit according to claim 1 or 2 , further comprising an appendage that is attached in surface contact with the cylindrical surface of the structure. A partition unit according to any one of claims 1 to 3 is used .
A partition characterized by:

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