JP7421810B2 - furniture - Google Patents

Description

The present invention relates to furniture that can be used as a single piece of furniture such as a chair, table, step stool, etc., and can also be used as a furniture group with a plurality of arrangements when a plurality of pieces of furniture of the same shape are assembled.

Furniture such as chairs and tables have a top plate and legs supporting the top plate, and are typically used as a single item. A prefabricated table assembled from a plurality of table pieces is described in Patent Document 1. This assembly table is assembled into a quadrilateral shape by combining four table pieces that can each be used independently, and an opening is formed in the center of the table surface.

Patent Document 2 discloses furniture for children that includes building block legs that can be used as legs for the top of a desk or chair. In this child's furniture, blocks that the child can use as building blocks are added to the legs, allowing the height of the chair or desk to be changed as the child grows.

Japanese Patent Application Publication No. 2013-56129 Japanese Patent Application Publication No. 8-238148

Patent Document 1 discloses a quadrilateral assembly type table assembled from four table pieces, and cannot be arranged in any other form than quadrilateral. On the other hand, Patent Document 2 discloses furniture for infants in which the height of the top plate of a desk or chair can be changed according to the growth of the infant, and the arrangement form of the desk or chair cannot be changed.

The shapes of conventional chairs and desk tops are simple shapes, and even if a plurality of chairs etc. are assembled, the arrangement shape after gathering is within the range of prediction.

An object of the present invention is to provide furniture that can form a plurality of types of chair and desk top plate groups depending on the position where the top plate abuts.

The present invention provides furniture having a top plate and legs provided on the top plate, wherein the top plate has three opposing sides included in each side of a virtual triangle and having the same length. , three assembly sides provided between two of the opposing sides, the interior angles of the three vertices of the virtual triangle are different angles, and the assembly between any two of the opposing sides When a plurality of the top plates are arranged so that the sides are connected, the plurality of top plates can form a plurality of types of top plate groups in which the width of the assembly area formed by the plurality of assembly sides is different.

The three opposing sides formed on the top plate have the same length, but the angles of two adjacent opposing sides are different, and the assembled sides between the two opposing sides can be connected to create multiple tops. By abutting the plates with their opposing sides to form an assembly area, it is possible to form a plurality of groups of top plates with different widths of the assembly areas depending on the angle formed by two adjacent opposing sides. As a result, it can be used as a single chair, desk, or other piece of furniture, and when multiple top plates are brought together against each other, it is possible to create a group of top plates in a special arrangement. It can be used for early childhood education in educational facilities for school children.

FIG. 1 is a perspective view showing furniture that is an embodiment of the present invention. 2 is a plan view showing the top plate of the furniture shown in FIG. 1. FIG. FIG. 2 is a plan view showing an example of a top plate group formed by arranging four pieces of the furniture of FIG. 1; FIG. 3 is a plan view showing another example of a top board group formed by arranging six pieces of the furniture of FIG. 1; FIG. 2 is a plan view showing an example of a top board group formed by arranging 12 pieces of the furniture shown in FIG. 1; Figure 3a is a perspective view of Figure 3a; Figure 3b is a perspective view of Figure 3b; Figure 3c is a perspective view of Figure 3c; It is a top view which shows the top plate of the furniture which is another embodiment. 6 is a plan view showing an example of a top plate group formed by arranging four pieces of furniture shown in FIG. 5. FIG. 6 is a plan view showing an example of a top board group formed by arranging six pieces of furniture shown in FIG. 5. FIG. 6 is a plan view showing an example of a top plate group formed by arranging 12 pieces of furniture shown in FIG. 5. FIG. It is a top view which shows the top plate of the furniture which is still another embodiment. It is a top view which shows the top plate of the furniture which is still another embodiment. It is a top view which shows the top plate of the furniture which is still another embodiment. It is a top view which shows the top plate of the furniture which is still another embodiment. (A) is a plan view showing two symmetrical top plates, and (B) is a perspective view showing a child's chair equipped with the top plate of (A) placed in a toilet for infants. be.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The same reference numerals are given to common members in the respective embodiments shown in the drawings.

FIG. 1 shows a case where the furniture of the present invention is applied to a chair. The chair 10 has a top plate 11 and three legs 12 attached to the lower surface of the top plate 11. You can sit on it. As shown by broken lines in FIG. 2, the top plate 11 has three opposing sides A, B, and C included in each side 13a, 13b, and 13c of the virtual triangle 13. The lengths L of C are the same.

The interior angles of the three vertices 14a, 15a, and 16a of the virtual triangle 13 are indicated by α, β, and γ, and the interior angles α, β, and γ are different from each other. In FIG. 2, the interior angle α is 90 degrees, the interior angle β is 60 degrees, and the interior angle γ is 30 degrees.

An assembly side 14 is provided between opposite sides C and A, an assembly side 15 is provided between opposite sides A and B, and an assembly side 16 is provided between opposite sides B and C. is provided. Each assembly side 14, 15, and 16 has a concave shape consisting of a circular arc with radius P1 (P2), Q1 (Q2), and R1 (R2) centered on the corresponding vertex 14a, 15a, 16a. Therefore, in the assembly side 14, the distance P1 from the corresponding vertex 14a to one end is the same as the distance P2 from the corresponding vertex 14a to the other end. Similarly, for the other assembly sides 15 and 16, the distances Q1 and R1 from the corresponding vertices 15a and 16a to one end are the same, and the distances Q2 and R2 from the corresponding vertices 15a and 16a to the other end are the same. In this way, when viewed from above, the top plate 11 has three straight opposing sides A to C of the same length on the outer periphery and three assembly sides 14 to 16 of different lengths. There is.

If opposing side A is the first opposing side, opposing side B is the second opposing side, and opposing side C is the third opposing side, then the angle formed by the third opposing side C and the first opposing side A is is α, the angle between the first opposing side A and the second opposing side B is β, and the angle between the second opposing side B and the third opposing side C is γ.

Let s be the perpendicular line in the direction toward the inside of the top plate 11 at the longitudinal center of the opposing side A, and similarly, the perpendicular line in the direction toward the inside of the top plate 11 at the longitudinal center of the other two opposing sides B and C. Assuming t and u, three perpendicular lines s, t, and u intersect at a point near the center of the top plate 11. In this way, if the distances from the vertices of both ends of each of the opposing sides A to C are set so that the three perpendicular lines intersect at one point, the center of gravity of the top plate 11 will be located at the center of the top plate 11, The stability when sitting on the chair 10 can be increased.

The three legs 12 are plate materials whose width dimension is slightly narrower than the length of the opposing sides, and the legs 12 do not protrude from the assembly sides 14 to 16 when the top plate 11 is viewed from above. However, even if the width dimension of the leg part 12 is set to be the same as the length of the opposite side, the leg part 12 can be assembled to the top plate 11 so that the leg part 12 does not protrude from the assembly side. The leg portions 12 are made of a material having the same thickness as the top plate 11, so that an increase in manufacturing costs can be suppressed. However, the thickness of the leg portions 12 may be made different from the thickness of the top plate 11. As shown by the broken lines in FIG. 2, the width portions of the plate are along the opposing sides A to C, and are shifted to the inside of the top plate from the opposing sides. If it is shifted inward from the opposite side, even if the leg 12 is made of wood and deforms due to aging, the lower end of the leg 12 will be moved outward from the position of the opposite side. Displacement can be reliably suppressed. However, the legs 12 may be assembled to the top plate 11 so that the outer surfaces of the legs 12 in the width direction match the positions of the opposing sides.

Note that the number of legs 12 is not limited to three, and additional legs may be added to the bottom surface of the top plate, and the legs may be attached to the bottom surface of the top plate 11 as one pillar material. You can. Furthermore, by increasing the thickness of the top plate 11, the top plate 11 can be shaped to also serve as the legs 12. Further, the top plate 11 and the legs 12 may be made of wood, resin, or metal such as stainless steel.

As shown in FIG. 2, in the top plate 11, two opposing sides adjacent to each other via an assembly side have mutually different angles, and the lengths of the three opposing sides are set to be the same. As a result, by arranging the top plates 11 of a plurality of chairs 10 so that the assembly sides formed in the same angular range are connected, it is possible to assemble and form a plurality of types of top plate groups arranged in a circular or arc shape. . Further, by connecting assembly sides formed at different angles, it is possible to assemble a plurality of types of winding top plate groups.

FIG. 3a is a plan view showing a top plate group 21 formed by arranging four chairs 10 shown in FIG. In FIG. 4a one of the four chairs 10 is shown separated from the other three chairs 10. This top plate group 21 is made up of four top plates 11 by making the opposing sides A of one top plate 11 and the opposing sides C of the other top plate 11 face to face, facing each other and abutting against each other. It is formed by arranging the top plates 11 in a circular manner as a whole so that the respective assembly sides 14 are continuous. A closed circular assembly area 25a is formed by the assembly sides 14 of the four top plates 11. When a table (not shown) is placed in the assembly area 25a, four chairs 10 are placed surrounding the table.

The two opposite sides A and C may be in abutted state, or there may be a gap of only a few millimeters. As long as a person can sit on the assembled top board group 21, adjacent assembly sides 14 do not need to be in contact with each other.

When the top plates 11 of two chairs 10 are arranged with opposing sides A and C facing each other and their assembly sides 14 connected, a semicircular assembly area is formed by the two top plates 11. be done. As shown in FIG. 4a, when the top plates 11 of three chairs 10 are arranged with their respective assembly sides 14 connected, a 270 degree arc-shaped assembly area is formed by the three top plates 11.

FIG. 3b is a plan view showing a top plate group 22 formed by arranging six chairs 10 shown in FIG. 1. In Figure 4b, one of the six chairs 10 is shown separated from the other five chairs 10. This top plate group 22 is made up of six top plates by making the opposing side A of one top plate 11 and the opposing side B of the other top plate 11 face each other and abut against each other. It is formed by arranging the plates 11 so that their assembly sides 15 are connected. A closed circular assembly area 25b is formed by the assembly sides 15 of the six top plates 11. This assembly area 25b is wider than the assembly area 25a shown in FIG. 3a. When a table (not shown) is placed in the assembly area 25b, six chairs 10 are placed surrounding the table.

When the top plates 11 of three chairs 10 are arranged with opposing sides A and B facing each other and their assembly sides 15 connected, a semicircular assembly area is formed by the three top plates. , by arranging the top plates 11 of any number of chairs 10 from 2 to 5, an assembly area partially opened to the outside is formed. FIG. 4b shows a top board group 22 in which the top boards 11 of five chairs 10 are arranged with their respective assembly sides 15 connected, and the assembly area in the shape of an arc of 300 degrees is located between the five top boards 11. It is formed with a part opened to the outside.

FIG. 3c is a plan view showing a top plate group 23 formed by arranging twelve chairs 10 shown in FIG. 1 in a ring shape. In FIG. 4c, one of the twelve chairs 10 is shown separated from the other eleven chairs 10. This top plate group 23 is made up of 12 top plates by making the opposing sides B of one of the top plates 11 and the opposing sides C of the other top plate 11 of two adjacent top plates 11 face each other and abut against each other. The plates 11 are arranged so that their respective assembly sides 16 are continuous. As a result, a circular assembly area 25c closed by the assembly sides 16 of the twelve top plates 11 is formed. This assembly area 25c is wider than the assembly areas 25a, 25b shown in Figures 3a and 3b. When a table (not shown) is placed in the assembly area 25c, twelve chairs 10 are placed surrounding the table.

When the top plates 11 of 2 to 11 chairs 10 are arranged with their assembly sides 16 connected, an assembly area with a portion opened outward is formed. FIG. 4c shows a top plate group 23 in which the top plates 11 of 11 chairs 10 are arranged with their respective assembly sides 16 connected, and a 330-degree arc-shaped assembly area is formed by the 11 top plates 11. shows.

In this way, the top plate 11 has three opposing sides with the same length, and the angles of the two adjacent opposing sides are different from each other, so that the assembly sides between the same opposing sides are connected. When a plurality of chairs are arranged, a first top group 21 as shown in FIGS. 3a and 4a, a second top group 22 as shown in FIGS. 3b and 4b, and a second top group 22 as shown in FIGS. 3c and 4c. A third top plate group 23 as shown can be assembled. When fixing two adjacent chairs with their two opposing sides abutting each other, the legs of the adjacent chairs can be connected using a binding tool (not shown). Moreover, if magnets are provided on the top plate so as to be exposed on the respective opposing sides, it is possible to easily perform the operation of abutting the opposing sides against each other when two adjacent top plates are abutted against each other.

As shown in FIG. 2, since the assembly sides 14 to 16 are concave arcuate sides, the respective assembly areas 25a to 25c are circular, as shown in FIGS. 3a to 3c. If the assembly area is not formed into a closed circle but is arranged with an opening, an arc-shaped assembly area is formed, each consisting of assembly sides.

For example, if a large number of chairs 10 shown in FIG. 1 are placed in a place or facility where childcare or education is provided for infants and school children, multiple chairs 10 may be assembled, depending on the position where opposing sides face each other and abut against each other, as shown in FIGS. 3a to 3c. Three types of assembly areas closed by sides can be formed by the top plate group. Further, a large number of assembly areas having openings can be formed. Furthermore, by not only connecting the same type of assembly sides, but also connecting assembly sides 15 and 14, or connecting assembly sides 15 and 16, a curved shape can be created. An assembly area can be formed. In this way, by changing the positions of the opposing sides, it is possible to assemble a large number of groups of top plates with different shapes, so that the plurality of chairs 10 can also be used as educational toys.

FIG. 5 is a plan view showing a top plate 11 of furniture according to another embodiment, and the interior angles α, β, and γ of the vertices 14a to 16a of the virtual triangle 13 of the top plate 11 are the angles of the top plate 11 shown in FIG. It is the same as the board. Furthermore, the lengths of each of the opposing sides A to C of the top plate 11 are the same. The difference is that in the top plate 11 shown in FIG. 2, the assembly sides 14 to 16 have a concave shape, whereas in the top plate 11 shown in FIG. 5, they have a straight shape.

FIG. 6a is a plan view showing a top plate group 21 formed by arranging four chairs 10 shown in FIG. This top plate group 21 is constructed by abutting the opposing side A of one of the two adjacent top plates 11 against the opposing side C of the other top plate 11, so that the four top plates The eleven assembly sides 14 are arranged in a row, and the four assembly sides 14 of the top plate 11 form a closed rectangular assembly area 25a. When a table (not shown) is placed in the assembly area 25a, four chairs 10 are placed surrounding the table.

When the top plates 11 of two chairs 10 are arranged with their respective assembly sides 14 connected, an assembly area consisting of two right-angled sides is formed by the two top plates 11, and the assembly area has an opening on the outside. be done.

FIG. 6b is a plan view showing a top plate group 22 formed by arranging six chairs 10 shown in FIG. This top plate group 22 is made up of six top plates by making the opposing side A of one top plate 11 and the opposing side B of the other top plate 11 face each other and abut against each other. It is formed by arranging the assembly sides 15 of the plates 11 so as to be continuous, and a closed hexagonal assembly area 25b is formed by the assembly sides 15 of the six top plates 11. This assembly area 25b is wider than the assembly area 25a shown in FIG. 6a. When a table (not shown) is placed in the assembly area 25b, six chairs 10 are placed surrounding the table.

When the top plates 11 of three chairs 10 are arranged with their respective assembly sides 15 connected, an assembly area of three straight sides is formed by the three top plates 11, and the top plates 11 of two to five chairs 10 are arranged. When the plates are placed, an assembly area is formed that is partially open to the outside.

FIG. 6c is a plan view showing a top plate group 23 formed by arranging twelve chairs 10, which are the furniture shown in FIG. 5, in a ring shape. This top plate group 23 consists of 12 top plates 11, with the opposing side B of one top plate 11 and the opposing side C of the other top plate 11 facing each other. It is formed by arranging linear assembly sides 16 in a row. A closed dodecagonal assembly area 25c is formed by the assembly sides 16 of the twelve top plates 11. This assembly area 25c is wider than the assembly areas 25a, 25b shown in Figures 6a and 6b. When a table (not shown) is placed in the assembly area 25c, twelve chairs 10 are placed surrounding the table.

As shown in FIG. 5, since the assembly sides 14-16 are straight lines, each assembly region 25a-25c is polygonal, as shown in FIGS. 6a-6c.

When a plurality of chairs 10 shown in FIG. 5 are arranged, three types of assembly areas closed by a plurality of assembly sides can be formed by a group of top plates depending on the abutting positions of opposing sides, as shown in FIGS. 6a to 6c. Further, a large number of assembly areas having openings can be formed. Furthermore, similar to the chair 10 shown in FIG. By doing so, it is possible to form an assembly area having a meandering shape.

FIG. 7 is a plan view showing a top plate 11 according to still another embodiment. This top plate 11 has the same structure as the top plate 11 shown in FIGS. 1 and 5, except that the three assembly sides 14 to 16 are convex.

Since the assembly sides 14 to 16 of this top plate 11 are convex, that is, convex, the opposite sides of one of the two adjacent top plates 11 are similar to the case shown in FIG. 6a. A and the opposite side C of the other top plate 11 are made to face each other and abut against each other, so that when a top plate group is formed by the four top plates 11, the respective assembly sides 14 are arranged in a row. The convex assembly sides 14 of the four top plates 11 form a closed assembly area.

Also, as in the case shown in FIG. 6b, by making the opposing side A of one of the two adjacent top plates 11 and the opposing side B of the other top plate 11 face each other and abutting each other, When a top board group is formed by six top boards 11, the assembly sides 15 of the six top boards 11 are arranged so as to be continuous, and a closed irregularly shaped assembly area is formed by the assembly sides 15 of the six top boards 11. Furthermore, as in the case shown in FIG. 6c, by making one opposing side B and the other opposing side C of two adjacent top plates 11 face each other and abutting each other, the 12 top plates 11 can be When the top plate group is formed, the respective convex assembly sides 16 are arranged in a row, and the assembly sides 16 of the twelve top plates 11 form a closed assembly area.

As shown in FIGS. 1, 5, and 7, the assembly sides 14 to 16 may have a concave shape, a linear shape, or a convex shape.

FIG. 8 is a plan view showing a top plate 11 according to still another embodiment. The three opposing sides A to C have the same length, and the size of the virtual triangle 13 and the interior angles α to γ of the three vertices 14a, 15a, and 16a are the same as the virtual triangle described above. That is, the interior angle α is 90 degrees, the interior angle β is 60 degrees, and the interior angle γ is 30 degrees. Further, each of the assembly sides 14 to 16 is a straight line, similar to the top plate 11 shown in FIG.

On the other hand, in the assembly side 14 between the opposing side C and the opposing side A, the distance P1 from the corresponding vertex 14a to one end is different from the distance P2 from the corresponding vertex 14a to the other end, Distance P1 is longer than distance P2. The assembly side 15 between the opposing side A and the opposing side B has a distance Q1 from the corresponding vertex 15a to one end and a distance Q2 from the corresponding vertex 15a to the other end, and the distance Q2 is the distance It is longer than Q1. Further, in the assembly side 16 between the opposing side B and the opposing side C, the distance R1 from the corresponding vertex 16a to one end is different from the distance R2 from the corresponding vertex 16a to the other end, and the distance R2 is slightly longer than distance R1.

In this way, even if the lengths from each vertex at both ends of the assembly sides 14 to 16 are different, it is possible to assemble and form three types of top plate groups in the same way as the above-mentioned top plate, and each can be assembled into a closed assembly. A region can be formed. Each of the assembly sides 14 to 16 may have not only a linear shape but also a concave shape or a convex shape.

FIG. 9 is a plan view showing a top plate 11 according to still another embodiment. The three opposing sides A to C have the same length, and the interior angles of the vertices of the virtual triangle 13 are different from those of the virtual triangle described above. That is, the interior angles α to γ of the three vertices 14a, 15a, and 16a are a right triangle in which α is 90 degrees, β is 40 degrees, and γ is 50 degrees. Each assembly side 14 to 16 of this virtual triangle 13 has a concave shape similar to the top plate 11 shown in FIG. The distance Q1 from the vertex 15a to one end is different from the distance Q2 from the corresponding vertex 15a to the other end, and the distance Q1 is longer than the distance Q2. Further, in the assembled side 16 between the opposing side B and the opposing side C, the distance R1 from the corresponding vertex 16a to one end is different from the distance R2 from the corresponding vertex 16a to the other end, and the distance R1 is slightly longer than distance R2. However, regarding the assembly side 14, the distance P1 and the distance P2 are the same.

For the top plate 11 of this chair, when four top plates 11 are placed with the assembly sides 14 connected, a closed assembly area is formed, and when nine top plates are placed with the assembly sides 15 connected, a closed assembly area is formed. A closed assembly area is formed. On the other hand, since the interior angle γ is 50 degrees, a closed area cannot be formed even if the assembly sides 16 are connected, but an assembly area with an opening can be formed.

FIG. 10 is a plan view showing a top plate according to still another embodiment. The three opposing sides A to C have the same length, and the size of the virtual triangle 13 is different from the above-mentioned virtual triangle. That is, the interior angles α to γ of the three vertices 14a, 15a, and 16a are a right triangle in which α is 80 degrees, β is 60 degrees, and γ is 40 degrees. Each assembly side 14 to 16 of this virtual triangle 13 has a straight line shape. The distances from the corresponding vertices of both ends of each assembly side 14 to 16 are different. In this top plate 11, when four top plates 11 are arranged with the assembly sides 15 connected, a closed assembly area is formed, and when nine top plates are arranged with the assembly sides 16 connected, a closed assembly area is formed. An assembly area is formed. On the other hand, even if a plurality of top plates are arranged with the assembly sides 14 connected, a closed assembly area cannot be formed, but an assembly area with an opening is formed.

In this way, the interior angle of each vertex of a virtual triangle is an angle of 1/N of 180 degrees, where N is a positive integer, and if N is an integer from 2 to 10, it can be closed by multiple chairs. For other angles, an assembly area with an opening can be formed. As shown in FIGS. 2, 5, and 8, if α, β, and γ are respectively 90 degrees, 60 degrees, and 30 degrees, closed assembly areas 25a, 25b, and 25c can be formed, respectively. . On the other hand, if the angle is set at 40 degrees, 50 degrees, 80 degrees, etc., as shown in FIGS. 9 and 10, a closed assembly area cannot be formed. However, it is possible to form an assembly area with an opening.

FIG. 11(A) is a plan view showing two symmetrical top plates 11, and FIG. 11(B) shows a child's chair equipped with the top plate of FIG. 11(A) placed in a toilet for infants. FIG.

FIG. 11A shows a top plate 11a and a top plate 11b, and the top plate 11a is the same as the top plate 11 shown in FIG. On the other hand, the top plate 11b has a symmetrical shape to the top plate 11a, with the front and back sides of the top plate 11a reversed. That is, the top plate 11a is provided with opposing sides A, B, and C in a clockwise direction in a plane, and assembly sides 14, 15, and 16 are provided in a clockwise direction. On the other hand, the top plate 11b is provided with opposing sides A, C, and B in a clockwise direction in a plane, and assembly sides 14, 16, and 15 are provided in a clockwise direction.

In this way, when the chair 10a with the symmetrical top plate 11a and the chair 10b with the top plate 11b are arranged with the assembly sides 14 connected, the two chairs 10a and 10b have symmetrical top plates. This will be the top plate group. Such an assembled chair consisting of two chairs can be used as a chair for infants, for example, for the toilet 30, as shown in FIG. 11(B).

The above-mentioned chair is suitable for children, but by changing the height of the legs and the size of the top plate, it can also be used as a chair for adults. It can also be used as a desk, a step stool, or even a stand. If the top of a chair or the like is made into a special shape, it can be used as a single chair, and if multiple chairs are grouped together, it can be made into a group of chairs with a special arrangement.For example, it can be used for the education of infants and school children. It can also be used as a teaching material for intellectual education using triangles at facilities.

The present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the gist thereof. By making it into a model of a desk or furniture, it can be used as a toy.

10 Chair 11 Top plate 12 Legs 13 Virtual triangles 14 to 16 Assembly sides 14a to 16a Vertices 21 to 23 Top plate group 25a to 25c Assembly areas A, B, C Opposite sides

Claims (6)

Furniture having a top plate and legs provided on the top plate,
The top plate has three opposing sides included in each side of a virtual triangle and having the same length, and three assembly sides provided between the two opposing sides,
The interior angles of the three vertices of the virtual triangle are mutually different angles,
When a plurality of the top plates are arranged so that the assembly sides between any two of the opposite sides are connected, the plurality of top plates are arranged so that the assembly areas formed by the plurality of assembly sides are different in size. Furniture that can form a group of different types of top plates. The furniture according to claim 1,
At least one of the interior angles is 1/N of 180 degrees (N is an integer from 2 to 10), and at least one of the three types of top plate groups has a closed assembly area. Furniture that forms a defined shape. The furniture according to claim 1 or 2,
In the furniture, at least one of the three assembly sides has the same distance from the corresponding vertex to one end and the same distance from the corresponding vertex to the other end. The furniture according to any one of claims 1 to 3,
The furniture, wherein the assembly side has one of a concave shape, a linear shape, and a convex shape. The furniture according to any one of claims 1 to 4,
The interior angles of the three vertices of the virtual triangle are 90 degrees, 60 degrees and 30 degrees,
a first top plate group in which the assembly area is formed in a closed shape by the assembly sides of the four top plates by connecting the assembly sides between internal angles of 90 degrees;
a second top plate group in which the assembly area is formed in a closed shape by the assembly sides of the six top plates by connecting the assembly sides between the interior angles of 60 degrees;
a second top plate group in which the assembly area is formed in a closed shape by the assembly sides of the 12 top plates by connecting the assembly sides between an internal angle of 30 degrees;
Furniture that can be formed. The furniture according to claim 5,
The three assembly sides have the same distance from the corresponding apex to one end and the same distance from the corresponding apex to the other end.

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