JP7249700B1 - Three-dimensional structure and three-dimensional structure manufacturing method - Google Patents

Abstract

A three-dimensional structure and a three-dimensional structure manufacturing method that can be manufactured with reduced work load are provided. A three-dimensional structure (1) includes a plurality of column band members (111, 112) obtained by planarly developing a mesh element row and a plurality of row band members (121, 122) obtained by planarly developing an element row. A row band group 12 in which a plurality of row band members 121 and 122 are arranged on the rear surface of the column band group 11 in which the column band members 111 and 112 of books are arranged is a rectangular plate corresponding to the same element in the mesh. The square plates 111a, . It is characterized by [Selection drawing] Fig. 2

Description

TECHNICAL FIELD The present invention relates to a three-dimensional structure and a three-dimensional structure manufacturing method applied to design walls, toys, prototypes, and the like.

2. Description of the Related Art Conventionally, a three-dimensional structure constructed by connecting a plurality of polygonal plates such as triangles is known (see Patent Document 1, for example). In the three-dimensional structure described in Patent Literature 1, polygonal plates of various sizes and shapes are connected by hinge connection to construct a three-dimensional surface shape. Each polygonal plate has the shape of a polygon when the three-dimensional surface is divided by a polygonal grid.

JP 2018-119285 A

Here, in the three-dimensional structure described in Patent Literature 1, as many polygonal plates as the number of polygons in the polygonal grid dividing the surface of the three-dimensional object are required to construct the surface shape of the three-dimensional object. The number of polygons in such a polygonal grid can be enormous depending on the surface shape of the desired three-dimensional object. In other words, depending on the surface shape of the three-dimensional structure described above, a large number of polygonal plates may be required, and the task of connecting these many polygonal plates like puzzle pieces tends to be a burden on the operator. There is a problem.

An object of the present invention is to provide a three-dimensional structure and a three-dimensional structure manufacturing method that can be manufactured with reduced work load.

A three-dimensional structure for achieving the above object is a plurality of belt members obtained by planarly developing a plurality of element rows in a mesh that represents a three-dimensional shape by arranging square elements in a grid of multiple rows and multiple columns. A plurality of column band members formed separately from each other, each having a shape in which square plates having a shape corresponding to each element are connected in a band, A strip member comprising a plurality of row strip members formed separately from each other , each row strip member having a shape in which square plates having a shape corresponding to each element are connected in a strip shape, and the plurality of element columns According to the arrangement of the plurality of column band members , on one of the front and back surfaces of the column band group arranged so that the sides are in close contact with each other , according to the arrangement of the plurality of element rows In each strip member , a row strip group in which the plurality of row strip members are arranged so that their sides are in close contact with each other is arranged so that square plates corresponding to the same elements in the mesh overlap each other. It is characterized in that the three-dimensional shape is formed by folding and overlapping the rectangular plates at the boundaries.

The three-dimensional structure described above is composed of column strip members obtained by planarly developing element rows in a grid-like mesh and row band members obtained by planarly developing element rows. The three-dimensional formation work consists only of stacking the column strip group and the row strip group while folding each strip member along the boundary so that the rectangular plates overlap each other. According to such a configuration, it is possible to form a three-dimensional shape with a significantly reduced work load compared to the work of dividing each element of the mesh into parts and joining them together. In this way, the three-dimensional structure can be manufactured with reduced work load.

Here, it is preferable that the quadrilateral plate in at least one of the column strip group and the row strip group has the same quadrilateral shape as the element at the corresponding position in the mesh.

According to this configuration, the outer wall of the three-dimensional structure is densely formed by the column band group or the row band group having the same rectangular plates as the elements of the mesh, so that a good appearance without gaps can be obtained. be able to.

Moreover, it is preferable that the quadrilateral plates in the column strip group and the quadrilateral plates in the row strip group have the same quadrilateral shape when overlapping each other.

According to this configuration, the outer wall of the three-dimensional structure has a double-wall structure in which the rectangular plates in the column band group and the rectangular plates in the row band group are overlapped at any place, so that the strength of the wall can be improved. can.

In addition, at least one column band member among the plurality of column band members or at least one row band member among the plurality of row band members has at least a pair of non-perpendicular interior angles. It is preferably composed of a plurality of square plates, including rectangular plates.

According to this configuration, the column strip member and the row strip member made up of a plurality of square plates including non-rectangular plates are folded at the boundary line, compared to the square plate and the rectangular plate which are made up of only rectangular plates. The degree of freedom of formable three-dimensional shapes is increased. In other words, it is possible to increase the degree of freedom regarding the shape of the three-dimensional structure provided with such column band members and row band members.

Further, the mesh expresses the three-dimensional shape by dividing at least some of the plurality of square elements arranged in the grid into triangular elements by diagonal lines, and the plurality of row band members and Of the quadrilateral plates constituting each of the plurality of row band members, quadrilateral plates corresponding to the elements divided into the triangular elements in the mesh are bent diagonally into triangular plates having shapes corresponding to the triangular elements. The column strip group and the row strip group are overlapped while the quadrangular plate having the triangular plate is folded diagonally so that the triangular plates that are divided as possible and correspond to the same elements in the mesh overlap each other. It is preferable that the three-dimensional shape is formed by

According to this configuration, at least a part of the quadrangular plates is divided into triangular plates so that they can be bent diagonally. Can be configured. In addition, it is possible to twist and deform the column band members and the row band members by bending them diagonally, and the degree of freedom of the shape that can be formed by the column band members and the row band members, that is, the freedom of the shape of the three-dimensional structure. You can also increase the intensity.

Further, a three-dimensional structure manufacturing method for achieving the above object is a three-dimensional structure manufacturing method for manufacturing the three-dimensional structure described above, comprising a row band forming step of forming the plurality of row band members separately from each other. a row band forming step of forming the plurality of row band members separately from each other ; on the surface of the plurality of row strip members, the row strip group arranged so that the sides of each row strip member are in close contact with each other, and the square plates corresponding to the same elements in the mesh overlap each other, and a three-dimensional forming step of forming the three-dimensional shape by folding and stacking the rectangular plates of each band member at the boundary line.

According to the three-dimensional structure manufacturing method described above, a three-dimensional structure can be manufactured by superposing column band groups and row band groups, which is less burdensome than the work of dividing each element of the mesh into parts and joining them together. Thus, according to the three-dimensional structure manufacturing method described above, it is possible to manufacture a three-dimensional structure while suppressing the workload.

The three-dimensional structure of the present invention can be manufactured with less work load, and according to the three-dimensional structure manufacturing method of the present invention, the three-dimensional structure can be manufactured with less work load.

It is a perspective view which shows the three-dimensional structure of 1st Embodiment. 2 is an exploded perspective view of the three-dimensional structure shown in FIG. 1; FIG. 3 is a plan view showing column band members and row band members shown in FIG. 2; FIG. FIG. 4 is a schematic flow chart showing a three-dimensional structure manufacturing method for manufacturing the three-dimensional structure shown in FIGS. 1-3. FIG. It is a perspective view which shows the three-dimensional structure of 2nd Embodiment. Figure 6 is an exploded perspective view of the three-dimensional structure shown in Figure 5; FIG. 7 is a plan view showing column band members and row band members shown in FIG. 6; It is a perspective view which shows the three-dimensional structure of 3rd Embodiment. FIG. 9 is a plan view showing a row band member that constitutes the three-dimensional structure shown in FIG. 8; FIG. 9 is a plan view showing a row band member that constitutes the three-dimensional structure shown in FIG. 8;

A three-dimensional structure and a three-dimensional structure manufacturing method according to the first embodiment will be described below.

FIG. 1 is a perspective view showing the three-dimensional structure of the first embodiment, and FIG. 2 is an exploded perspective view of the three-dimensional structure shown in FIG. 3 is a plan view showing the column band members and row band members shown in FIG. 2. FIG.

The three-dimensional structure 1 of the present embodiment is a quadrangular prism-shaped wall structure with a protruded center, and is a structure that is assumed to be used as a design wall. This three-dimensional structure 1 has two column band members 111 and 112 and two row band members 121 and 122 .

The two column band members 111 and 112 are formed by four quadrilateral elements M1a, M1b, M1c, and M1d arranged in a grid pattern of two rows and two columns to form a three-dimensional quadrangular prism-shaped mesh M1. It is two band members obtained by planarly developing the element rows M111 and M112. As shown in FIG. 3, in a state developed on a plane, each of the row band members 111 and 112 has parallelogram-shaped rectangular plates 111a, 111b, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, 112a, and 111d, respectively. It has a boomerang shape in which two 112b are connected in the row direction.

Similarly, two row band members 121 and 122 are two band members obtained by planarly developing two element rows M121 and M122 in the mesh M1. Each of the row band members 121 and 122 has a boomerang shape in which two square plates 121a, 121b, 122a and 122b having shapes corresponding to the respective elements M1a, M1c, M1b and M1d are connected in the row direction in a band shape.

In the three-dimensional structure 1, the following column band group 11 and row band group 12 are overlapped with each other to form a quadrangular prism-like three-dimensional shape. The row band group 11 has an arrangement structure in which two row band members 111 and 112 are arranged according to the arrangement of the two element rows M111 and M112 in the mesh M1. The row band group 12 has an arrangement structure in which two row band members 121 and 122 are arranged according to the arrangement of the two element rows M121 and M122 in the mesh M1. In the three-dimensional structure 1, a row band group 12 is superimposed on the back surface of the column band group 11, which is opposite to the design side, of the front and back surfaces. The row band group 12 is superimposed on the column band group 11 as follows. In other words, this layering is a column member 111, 112, and a line member 121, 122, a square plate 111a, 111B, 112a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 121a, 122a, 122a, 122a, 122a, 122a, 122a, 122A, 1222, 1222, which corresponds to the same element M1A, M1C, M1C, M1B, M1b, M1B, M1B, M1B, M1B, M1B, and 1222222. 122b overlap. Also, at this time, the row band members 111 and 112 are bent at the boundary lines 111c and 112c between the rectangular plates 111a, 111b, 112a and 112b. Similarly, the row band members 121 and 122 are bent at the boundary lines 121c and 122c between the rectangular plates 121a, 121b, 122a and 122b. A quadrangular prism-like three-dimensional shape is formed by these bendings.

A three-dimensional structure manufacturing method for manufacturing this three-dimensional structure 1 is an operation including the following steps.

FIG. 4 is a schematic flow chart showing a three-dimensional structure manufacturing method for manufacturing the three-dimensional structure shown in FIGS. 1-3.

The three-dimensional structure manufacturing method shown in FIG. 4 includes a column band forming step S11, a row band forming step S12, and a three-dimensional forming step S13. The row band forming step S11 is a step of forming two row band members 111 and 112 each having a boomerang shape as shown in FIG. Similarly, the row band forming step S12 is also a step of forming two row band members 121 and 122 each having a boomerang shape. There is no particular priority in executing the column band forming step S11 and the row band forming step S12, and either step may be performed first, or may be performed concurrently. After the two column band members 111 and 112 and the two row band members 121 and 122 are formed by these two steps, the three-dimensional formation step S13 is performed. The three-dimensional formation step S13 is, as shown in FIG. 2, a step of overlapping the row band group 12 on the rear surface of the column band group 11 to form a three-dimensional shape. This superposition is performed so that the square plates 111a, 111b, 112a, 112b, 121a, 122a, 121b, and 122b corresponding to the same elements M1a, M1b, M1c, and M1d overlap each other as described above. Moreover, each belt member is bent at boundaries 111c, 112c, 121c, 122c between the rectangular plates 111a, 111b, 112a, 112b, 121a, 122a, 121b, 122b. A quadrangular prism-shaped three-dimensional structure 1 is formed by a series of these operations.

The three-dimensional structure 1 of the first embodiment described above includes column band members 111 and 112 obtained by planarly developing the element columns M111 and M112 in the lattice mesh M1, and row band members obtained by planarly developing the element rows M121 and M122. 121 and 122. Then, the column band group 11 and the row band group 12 are simply folded and overlapped at the boundary lines 111c, 112c, 121c and 122c so that the rectangular plates 111a, 111b, 112a, 112b, 121a, 122a, 121b and 122b overlap each other. A solid is formed. According to such a configuration, it is possible to form a three-dimensional shape with much reduced work load compared to the work of combining the elements M1a, M1b, M1c, and M1d of the mesh M1 into parts and joining them together. In this way, the three-dimensional structure 1 can be manufactured with reduced work load.

In addition, according to the three-dimensional structure manufacturing method of the first embodiment for manufacturing this three-dimensional structure 1, the load of overlapping the column band group 11 and the row band group 12 is less than the above-described work such as joining the parts. A three-dimensional structure 1 is manufactured with a small amount of work. Thus, according to the three-dimensional structure manufacturing method described above, the three-dimensional structure 1 can be manufactured while suppressing the workload.

Here, in this embodiment, the rectangular plates 111a, 111b, 112a, 112b of the column band group 11 and the rectangular plates 121a, 122a, 121b, 122b of the row band group 12 have the following shapes. That is, each has the same quadrangle (parallelogram in this embodiment) as the elements M1a, M1b, M1c, and M1d at corresponding positions in the mesh M1. According to this configuration, the sides of the rectangular plates 111a, 111b, 112a, and 112b of the column band group 11 are in contact with each other without gaps, and similarly, the sides of the rectangular plates 121a, 122a, 121b, and 122b of the row band group 12 are in contact with each other. They will be in contact with each other without gaps. As a result, the outer wall of the three-dimensional structure 1 is densely formed, so that a good appearance without gaps can be obtained.

In this embodiment, the rectangular plates 111a, 111b, 112a, and 112b in the column band group 11 and the rectangular plates 121a, 122a, 121b, and 122b in the row band group 12 overlap each other and are the same rectangle (parallelogram). shape). According to this configuration, the rectangular plates 111a, 111b, 112a, and 112b in the column band group 11 and the rectangular plates 121a, 122a, 121b, and 122b in the row band group 12 are arranged at any location on the outer wall of the three-dimensional structure 1. It becomes a double-walled structure. As a result, the wall strength of the three-dimensional structure 1 can be improved.

Further, in this embodiment, the column band members 111 and 112 and the row band members 121 and 122 are non-rectangular (parallelogram) rectangular plates 111a, 111b, 112a, 112b, and 111a with all internal angles being non-right angles. , 111b, 112a, and 112b. According to this configuration, compared with a rectangular plate such as a square plate or a rectangular plate, the degree of freedom of the three-dimensional shape that can be formed by bending the band members at the boundary lines 111c, 112c, 121c, and 122c is increased. It will happen. In other words, it is possible to increase the degree of freedom regarding the shape of the three-dimensional structure 1 having such column band members 111 and 112 and row band members 121 and 122 .

The description of the first embodiment is finished above, and the second embodiment will be described next. In the second embodiment, the three-dimensional structure manufacturing method is the same as the three-dimensional structure manufacturing method of the first embodiment shown in the flow chart in FIG. 4, so illustration and description are omitted.

FIG. 5 is a perspective view showing the three-dimensional structure of the second embodiment, and FIG. 6 is an exploded perspective view of the three-dimensional structure shown in FIG. 7 is a plan view showing the column band members and row band members shown in FIG. 6. FIG.

The three-dimensional structure 2 of this embodiment is a design wall in the shape of a square plate with the center protruding in the shape of a quadrangular pyramid. This three-dimensional structure 2 includes four column band members 211, 212, 213, 214 and four row band members 221, 222, 223, 224. The four column strip members 211, 212, 213, and 214 are strip members obtained by developing four element columns M211, M212, M213, and M214 in the mesh M2 of 4 rows×4 columns. Four row strip members 221, 222, 223, and 224 are strip members obtained by developing four element rows M221, M222, M223, and M224 in the mesh M2. Each of the column band members 211, 212, 213, 214 and the row band members 221, 222, 223, 224 has a shape in which four rectangular plates 21a, 22a corresponding to the shape of each element M2a of the mesh M2 are connected. ing. As for the element M2a of the mesh M2 and the square plates 21a and 22a of each band member, only one square plate for one element and each column/row band member is denoted by a reference numeral in order to avoid complication of the drawing. there is

Further, in the present embodiment, the quadrilateral plates 21a and 22a of each strip member are non-rectangular plates (trapezoidal plates) whose inner angles become sharper toward the center of the mesh M2. As a result, the column band members 211, 212, 213, 214 and the row band members 221, 222, 223, 224 have a curved band shape in which the closer to the center of the mesh M2, the more bent at the center. .

In the present embodiment, the mesh M2 represents a three-dimensional shape in which all of the plurality of square elements M2a arranged in a lattice are further divided into triangular elements along diagonal lines M2a-1. The quadrilateral plates 21a and 22a of the column strip members 211, 212, 213 and 214 and the row strip members 221, 222, 223 and 224 are also triangular plates shaped according to the triangular elements in the mesh M2. It is split at 22a-1 so as to be foldable.

The three-dimensional structure 2 has four row band members on the back surface of the column band group 21 composed of four column band members 211, 212, 213, and 214, similarly to the three-dimensional structure 1 of the first embodiment described above. Row band group 22 consisting of 221, 222, 223 and 224 is superimposed. At this time, the rectangular plates 21a and 22a having the triangular plates are bent along the diagonals 21a-1 and 22a-1 so that the triangular plates corresponding to the same elements M2a in the mesh M2 overlap each other, and the column band group 21 and row strip group 22 are superimposed.

It goes without saying that the three-dimensional structure 2 of the second embodiment described above can also be manufactured with reduced work load, similarly to the above-described first embodiment.

Further, in this embodiment, the three-dimensional structure 2 is composed of eight parts, namely four column strip members 211, 212, 213 and 214 and four row strip members 221, 222, 223 and 224. FIG. On the other hand, unlike the present embodiment, the number of parts is 16 when the elements M2a of the mesh M2 are individually divided into parts and joined together. In other words, according to the present embodiment, the number of required parts can be reduced, and in this respect as well, it is possible to reduce the workload during manufacturing.

Further, in this embodiment, the rectangular plates 21a and 22a of the row band members 211, 212, 213 and 214 and the row band members 221, 222, 223 and 224 can be bent into triangular plates along the diagonals 21a-1 and 22a-1. split. According to this configuration, a finer three-dimensional structure 2 can be formed than when the three-dimensional structure is formed using only rectangular plates. In addition, the column band members 211, 212, 213 and 214 and the row band members 221, 222, 223 and 224 can be torsionally deformed by bending along the diagonal lines 21a-1 and 22a-1. As a result, the degree of freedom of the shape that can be formed by the column band members 211, 212, 213, 214 and the row band members 221, 222, 223, 224, that is, the degree of freedom of the shape of the three-dimensional structure 2 can be increased. can also

The description of the second embodiment is finished above, and the third embodiment will be described next. Also in the third embodiment, the three-dimensional structure manufacturing method is the same as the three-dimensional structure manufacturing method of the first embodiment shown in the flow chart in FIG. 4, so illustration and description are omitted.

FIG. 8 is a perspective view showing a three-dimensional structure of the third embodiment. 9 is a plan view showing column band members forming the three-dimensional structure shown in FIG. 8, and FIG. 10 is a row band member forming the three-dimensional structure shown in FIG. It is a plan view showing.

The three-dimensional structure 3 of this embodiment is a design wall that looks like a rectangle when viewed from the front and has a complicated concave-convex shape. However, although the shape is complicated, its basic structure consists of a plurality of (10 in this embodiment) column belt members 311 and a plurality of (10) row members 311, as in the first and second embodiments. The structure is provided with a band member 321 . A plurality of column band members 311 are band members obtained by developing a plurality of element columns M311 in the mesh M3 (10 columns×10 rows in this embodiment), and a plurality of row band members 321 are a plurality of element rows. It is a belt member developed from M321. Also in this embodiment, the rectangular plates 31a and 32a of each band member are rectangular plates having various shapes such as rectangles, parallelograms, trapezoids, etc., depending on the target complicated three-dimensional shape. . 9 and 10, the column band members 311 and the row band members 321, both of which are formed from such rectangular plates, are band members having a complicatedly bent shape. It has become. 8 to 10, in order to avoid complication of the drawings, a single reference numeral "311" is assigned to a plurality of column band members, and similarly, a plurality of row band members are indicated by "321". is marked. As for the element M3a of the mesh M3 and the quadrilateral plates 31a and 32a of each band member, only one quadrilateral plate for one element and each column/row band member is labeled.

Also in this embodiment, as in the second embodiment described above, the mesh M3 is formed by dividing all of the plurality of square elements M3a arranged in a lattice into triangular elements along diagonal lines M3a-1. represents the shape. The rectangular plates 31a and 32a of the column band member 311 and the row band member 321 are also divided into triangular plates having shapes corresponding to triangular elements in the mesh M3 so as to be bendable along the diagonal lines 31a-1 and 32a-1.

The three-dimensional structure 3 has row band groups 32 overlaid on the rear surface of the column band group 31, like the three-dimensional structure 1 of the first embodiment described above. In this embodiment, the column band group 31 consists of ten column band members 311 , and the row band group 32 consists of ten row band members 321 . At this time, the rectangular plates 31a and 32a having the triangular plates are bent along the diagonals 31a-1 and 32a-1 so that the triangular plates corresponding to the same element M3a in the mesh M3 overlap each other, and the column band group 31 and row band group 32 are superimposed.

It goes without saying that the three-dimensional structure 3 of the third embodiment described above can also be manufactured with reduced work load, similarly to the above-described first embodiment.

Also, in the present embodiment, as in the second embodiment described above, the number of parts required for constructing the three-dimensional structure 3 is reduced, and in this respect as well, it is possible to reduce the work load during manufacturing.

It should be noted that the first to third embodiments described above merely show typical forms of the present invention, and the present invention is not limited to these. That is, various modifications can be made without departing from the gist of the present invention. As long as such modifications still have the configuration of the three-dimensional structure and three-dimensional structure manufacturing method of the present invention, they are, of course, included in the scope of the present invention.

For example, in the first to third embodiments, three-dimensional structures 1, 2, and 3, which are three-dimensional structures 1, 2, and 3, which are uneven walls assumed to be used as design walls, and methods for manufacturing the three-dimensional structures, are examples of three-dimensional structures and three-dimensional structure manufacturing methods. is exemplified. However, the three-dimensional structure and the three-dimensional structure manufacturing method are not limited to these, and may be a structure other than a wall such as a box, a sphere, a column, etc., and a method for manufacturing the same. not something to ask.

Further, in the above-described first embodiment, as an example of a three-dimensional structure and a three-dimensional structure manufacturing method, a three-dimensional structure in which column band members and row band members are formed based on meshes M1, M2, and M3 of orthogonal lattices 1, 2, 3 and their method of manufacture are exemplified. However, the three-dimensional structure and the three-dimensional structure manufacturing method are not limited to these. The mesh used as the basis for forming the column band members and the row band members may be partially or wholly a non-orthogonal grid in which the vertical and horizontal directions are not orthogonal.

Further, in the above-described first embodiment, as an example of a three-dimensional structure and a three-dimensional structure manufacturing method, the three-dimensional structure 1 including two column band members 111 and 112 and two row band members 121 and 122 and its A manufacturing method is illustrated. In addition, in the second embodiment, the three-dimensional structure manufacturing method is the same as in the first embodiment, so it is omitted. , 222, 223, 224 are illustrated. Also in the third embodiment, although the three-dimensional structure manufacturing method is omitted, the three-dimensional structure 3 including ten column band members 311 and ten row band members 321 is exemplified. However, the three-dimensional structure and the three-dimensional structure manufacturing method are not limited to these, and as long as the three-dimensional structure includes a plurality of column band members and a plurality of row band members and a method of manufacturing the same, each band member It does not ask about the specific number.

In addition, in the first to third embodiments, as an example of a three-dimensional structure and a three-dimensional structure manufacturing method, the three-dimensional structures 1 and 2 in which the row band groups 12, 22, and 32 are superimposed on the rear surfaces of the column band groups 11, 21, and 31 , 3 and their method of manufacture. However, the three-dimensional structure and the three-dimensional structure manufacturing method are not limited to this, and may be a structure in which row band groups are superimposed on the surface of column band groups and a manufacturing method thereof.

Further, in the first to third embodiments, the column band groups 11, 21, 31 and 31 each having the same rectangular plate as the elements of the meshes M1, M2, and M3 are examples of the column band group and the row band group. Row groups 12, 22, 32 are illustrated. However, the column band group and the row band group are not limited to these, and only one band group may have the same quadrangle as the mesh elements, and both band groups have quadrilaterals different from the mesh elements. You can do it. However, since the rectangular plates in at least one band group have the same rectangular shape as the elements of the meshes M1, M2 and M3, the three-dimensional structures 1, 2 and 3 can have a good appearance without gaps as described above. As I said.

In the first to third embodiments, the column band groups 11, 21, and 31 and the row band groups 12 and 22 having rectangular plates of the same shape overlapping each other are examples of the column band groups and the row band groups. , 32 are illustrated. However, the column strip group and the row strip group are not limited to these, and may have rectangular plates with different shapes depending on which ones overlap each other. However, according to the column band groups 11, 21, 31 and the row band groups 12, 22, 32 having rectangular plates of the same shape among the overlapping ones, the wall strength of the three-dimensional structures 1, 2, 3 can be improved. is possible as described above.

Further, in the first to third embodiments, as an example of the column band members and the row band members, the column band members 111 in which all of the quadrilateral plates constituting all the band members are non-rectangular such as parallelograms and trapezoids. , 311 and row band members 121, . . . , 321 are illustrated. However, the column band members and row band members are not limited to these, and only a part of the rectangular plates in any one band member may be non-rectangular, or all the rectangular plates in all the band members may be non-rectangular. The plate may be rectangular, such as square or rectangular. However, at least one of the row band members 111, . . . , 311 and the row band members 121, . , 3 can be increased.

Further, in the second and third embodiments, as an example of the column band members and the row band members, the column band members 111, . Band members 121, . . . , 321 are illustrated. However, the column band members and the row band members are not limited to this, and as exemplified in the first embodiment, not all the quadrangular plates may be divided into triangular plates. Alternatively, only some of the square plates may be divided into triangular plates. However, by dividing at least a portion of the rectangular plates into triangular plates, it is possible to configure the fine three-dimensional structures 2 and 3, and to increase the degree of freedom in terms of their shape, as described above. is.

1, 2, 3 Three-dimensional structure 11, 21, 31 Column band group 12, 22, 32 Row band group 21a-1, 22a-1, 31a-1, M2a-1, M3a-1 Diagonal line 21a, 22a, 31a, 32a, 111a, 111b, 112a, 112b, 121a, 121b, 122a, 122b Quadrilateral plate 111, 112, 211, 212, 213, 214, 311 Column strip member 111c, 112c, 121c, 122c Boundary line 121, 122, 221, 222, 223, 224, 321 Row strip members M1, M2, M3 Meshes M1a, M1b, M1c, M1d, M2a, M3a Elements M111, M112, M211, M212, M213, M214, M311 Element rows M121, M122, M221, M222 , M223, M224, M321 element row S11 column band forming step S12 row band forming step S13 three-dimensional forming step

Claims (6)

A plurality of band members obtained by planarly developing a plurality of element rows in a mesh representing a three-dimensional shape in which square elements are arranged in a grid of multiple rows and multiple columns, and a square plate having a shape corresponding to each element is formed. a plurality of row band members formed separately from each other and each having a band-like shape;
A plurality of belt members obtained by planarly developing a plurality of element rows in the mesh, each having a shape in which square plates having a shape corresponding to each element are connected in a band shape. and a row band member,
According to the arrangement of the plurality of element rows, the plurality of row band members are arranged on one surface of the front and back surfaces of the row band group arranged such that the side edges are in contact with each other. The plurality of row strip members according to the arrangement of the rows are arranged so that the sides of the row strip members are in contact with each other , and the square plates corresponding to the same elements in the mesh overlap each other, A three-dimensional structure characterized in that the three-dimensional shape is formed by folding and stacking quadrilateral plates of each band member at boundaries. 2. The three-dimensional structure according to claim 1, wherein a rectangular plate in at least one of said column band group and said row band group has the same rectangular shape as an element at a corresponding position in said mesh. 3. The three-dimensional structure according to claim 1, wherein the quadrilateral plates in the column strip group and the quadrilateral plates in the row strip group have the same quadrilateral shape when overlapping each other. At least one column band member among the plurality of column band members or at least one row band member among the plurality of row band members is a non-rectangular plate having at least a pair of interior angles that are non-right angles. 4. The three-dimensional structure according to any one of claims 1 to 3, wherein the three-dimensional structure is composed of a plurality of square plates including The mesh represents the three-dimensional shape by dividing at least some of the plurality of square elements arranged in the lattice into triangular elements by diagonal lines,
Among the quadrilateral plates constituting each of the plurality of column band members and the plurality of row band members, the quadrilateral plates corresponding to the elements divided into the triangular elements in the mesh are divided according to the triangular elements. The triangular plate is divided diagonally so that it can be bent,
The triangular plate having the triangular plates is folded diagonally so that the triangular plates corresponding to the same elements in the mesh overlap each other, and the column band group and the row band group are overlapped to form the three-dimensional shape. The three-dimensional structure according to any one of claims 1 to 4, characterized in that A three-dimensional structure production method for producing the three-dimensional structure according to any one of claims 1 to 5,
a row band forming step of forming the plurality of row band members separately from each other ;
a row band forming step of forming the plurality of row band members separately from each other ;
The plurality of row band members are arranged such that the side edges are in contact with the one surface of the column band group in which the plurality of column band members are arranged so that the side edges are in contact with each other. Three-dimensional formation of forming the three-dimensional shape by folding and stacking the arranged row band groups at the boundaries between the rectangular plates of each band member so that the rectangular plates corresponding to the same elements in the mesh overlap each other. process and
A three-dimensional structure manufacturing method comprising:

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