JP2011125622A - Sheet-like rectangular member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-like rectangular member capable of being assembled in a desired form or dissembled simply and easily. <P>SOLUTION: One and the other sheet-like members 1 are perpendicularly intersected each other and notches 3 formed on both the sheet-like members 2 are engaged with each other. At that time, a plane inserting section of the sheet-like member 2 is flexibly transformed along the projection 4a and the depression 4b formed on the notch 3 of the sheet-like member 2 in the direction of the thickness. Furthermore, the plane inserting section of the sheet-like section 2 is pressed firmly against the projection 4a of the notch 3 by the self restoring force of the sheet-like member 2. Thus, the sheet-like member 1 is not easily removed, even if a force opposing to the inserting direction is given to the sheet-like member 1 and the sheet-like member can keep the desired assembled form. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sheet-like rectangular body used for, for example, enjoying modeling and assembling, or developing intelligence, developing creativity, and function recovery training.

Conventionally, as a rectangular body used for the modeling or assembling, for example, a card-type building block disclosed in Patent Document 1 and an infant paper work card assembly disclosed in Patent Document 2 are proposed.
The card-type building block of Patent Document 1 is assembled by fitting the left side protruding portion or small protrusion of the second card-shaped thin plate into the cutout portion or small recess of the first card-shaped thin plate. However, since the assembled state is maintained only by the contact resistance generated at the fitting portion of each card-like thin plate, each card-like thin plate can be easily obtained by applying a pulling force in the direction opposite to the fitting direction to each card-like thin plate. It is difficult to maintain the assembled state.

  Moreover, the infant paper work card assembly of Patent Document 2 is assembled by inserting or bending card pieces of various shapes at the positions of cut lines or broken lines, or bonding them with an adhesive. However, when each card piece is inserted and assembled, the assembled state is maintained only by the contact resistance generated at the insertion portion of each card piece, so a pulling force is applied to each card piece in the direction opposite to the insertion direction. Then, each card piece is easily separated and the assembled state cannot be maintained.

Japanese Patent Laid-Open No. 10-328429 Utility Model Registration No. 3090418

  An object of the present invention is to provide a sheet-like rectangular body that can be easily and easily assembled or disassembled into a desired shape.

The present invention relates to a sheet-like rectangular body that is assembled into a desired shape by assembling a plurality of rectangular bodies having a plurality of notches, and is directed to the outer peripheral part of the rectangular body from the outer peripheral part of the rectangular body to the central part. Forming a plurality of cutout portions, and forming the cutout portion of the rectangular body into a cutout width in which a flat portion continuous with the closed inner end of the cutout portion formed in the rectangular shape is sandwiched in the thickness direction. It is characterized by being a sheet-like rectangular body.
Thus, for example, another sheet-like rectangular body is assembled from the front-rear direction, the left-right direction, and the oblique direction with respect to the horizontally disposed sheet-like square body. Alternatively, it is possible to assemble the sheet-like rectangular body in a desired shape by assembling the sheet-like rectangular body from the up-down direction, the left-right direction, or the oblique up-down direction with respect to the vertically arranged sheet-like square body. Moreover, the work of disassembling can be performed easily and easily.

As an aspect of the present invention, the sheet-like rectangular body is overlaid in the thickness direction with a plurality of rectangular bodies formed in the same size and shape as the sheet-like rectangular body, and a notch portion of each rectangular body is provided. The shapes can be matched so as to communicate with each other in the thickness direction and can be integrally joined.
Thereby, for example, a rectangular body formed transparent or translucent and a rectangular body colored in a desired color are overlapped. Alternatively, it is possible to give decorativeness by color by superimposing rectangular bodies colored in different colors.

Further, as an aspect of the present invention, the flat portion is flexibly deformed in the thickness direction so as to face the flat portion of the rectangular body inserted into the cut portion at one inner edge portion or both inner edge portions of the cut portion. Therefore, a convex portion can be formed.
As a result, the insertion side flat portion of the rectangular body is strongly pressed against the convex portion of the cutout portion by the restoring force of the rectangular body itself, so that a tensile force is exerted on the sheet-like rectangular body in the direction opposite to the insertion direction. Even if it is applied, the sheet-like rectangular body is difficult to separate.

Further, as an aspect of the present invention, the flat portion is flexibly deformed in the thickness direction on one side inner edge portion and the other side inner edge portion of the notch portion so as to face the flat portion of the rectangular body inserted into the notch portion. In addition to forming a convex part for the purpose, the convex part can be arranged at a different position between the one side inner edge part and the other side inner edge part of the notch part.
As a result, the insertion side plane portion of the rectangular body is flexibly deformed in different directions by the convex portions formed on the one side inner edge portion and the other side inner edge portion of the notch portion, so that one and the other sheet-like square bodies are formed. Can be firmly fixed.

Further, as an aspect of the present invention, on the line connecting the closed side inner ends of the notches formed at the opposed positions of the rectangular body, a folding ruled line that allows the rectangular body to be bent is formed along the line. can do.
As a result, the sheet-like rectangular body can be folded along a folding ruled line at a right angle or can be assembled at a desired angle.

As an aspect of the present invention, the rectangular body can be formed of a flexible plastic sheet.
Thereby, when assembling the sheet-like rectangular body at a position that is difficult to assemble in a straight state, a part or the whole of the sheet-like rectangular body can be flexibly deformed and assembled. Moreover, the work of disassembling can be performed easily and easily.

  The rectangular body can be constituted by, for example, a square, a pentagon, a hexagon, an octagon, other polygons, a circle, an ellipse, or the like.

  In addition to the plastic sheet, the rectangular body can be composed of, for example, a plastic plate, a metal plate, a wooden board, a plywood board, cardboard paper, cardboard, or an injection molded product.

  According to the present invention, since the notch portions formed in the one and the other sheet-like rectangular bodies are fitted together and assembled, for example, it can be assembled into a shape resembling a building, a vehicle, an animal, or the like, or can be enjoyed. At the same time, the operation of assembling or disassembling into a desired shape can be performed easily and easily. In addition, since a large contact resistance can be obtained as compared with a structure that fits linearly as in the conventional example, the sheet-like rectangular body can be firmly fixed and the insertion portion of the sheet-like rectangular body has a backlash. It is difficult to occur, and the assembled state in a desired shape can be maintained.

The perspective view which shows the sheet-like square body formed in octagon seeing from the plane. The top view which shows the sheet-like square body formed in the octagon of FIG. The enlarged view which shows the insertion part of a sheet-like square body. The perspective view which shows the sheet-like square body which overlaps the square body of the same shape. The expansion | deployment perspective view which shows the isolation | separation state of the rectangular body of FIG. The perspective view which shows the sheet-like square body which formed the convex part and the recessed part in a different position. The top view which shows the sheet-like square body which formed the translucent and the vertical line. The top view which shows the sheet-like square body formed in the hexagon and the round shape. Sectional drawing which shows the sheet-like square body in which the mirror surface layer was formed. The perspective view which shows the example assembled in tower shape using a sheet-like square body. The perspective view which shows the example assembled in box shape using a sheet-like square body. The perspective view which shows the example assembled to the flower shape using the sheet-like square body.

  1 is a perspective view showing a sheet-like rectangular body 1 formed in an octagon when viewed from above, FIG. 2 is a plan view showing the sheet-like rectangular body 1 formed in an octagon of FIG. 1, and FIG. It is an enlarged view which shows the insertion part of the rectangular-shaped body 1. FIG.

  In the sheet-like rectangular body 1 of this embodiment, a plastic sheet having translucency and flexibility is punched in the thickness direction by a Thomson punching machine (not shown), and an octagonal rectangular body 2 is punched and formed as viewed from above. (See FIG. 2).

A cutout portion 3 is formed on the outer peripheral portion of the rectangular body 2 from an intermediate portion of the side portion 2 a formed on the outer peripheral portion of the rectangular body 2 toward the central portion 2 b of the rectangular body 2.
Further, eight notches 3 are arranged radially at equal angles (or at equal intervals) with respect to the circumferential direction with the center 2b of the rectangular body 2 as the center.

  In the embodiment, the cutout portions 3 are formed one by one on the side portions 2a of the rectangular body 2, but may be formed only at two locations of the opposing side portions 2a and 2a. The number of books is not limited. In other words, if there are two or more notches 3, the desired shape can be assembled.

Notch 3 of the rectangular body 2 is formed to have a width W ₁ cutout insertion of the flat portion is allowed continuous with closed side inner end of the notch portion 3 formed on the other of the rectangular body 2 ( (Refer a part of Drawing 2 and Drawing 3). For example, if the notch width W ₁ of the notch 3 is formed to be about 0.1 mm wider than the thickness of the rectangular body 2, the rectangular body 2 can be easily inserted and removed.

  A convex portion 4 a is formed on one side inner edge portion of the cutout portion 3 so as to face one side plane portion of the rectangular body 2 inserted into the cutout portion 3. A recess 4 b is formed on the other inner edge of the notch 3 so as to face the other flat surface of the rectangular body 2 inserted into the notch 3.

  The convex portion 4a and the concave portion 4b are formed in a smooth curved surface shape from the open-side outer end of the cutout portion 3 toward the closed-side inner end, and are continuous with the closed-side inner end of the cutout portion 3 of the rectangular body 2. The flat portion to be flexibly deformed in the thickness direction.

  In the embodiment, the rectangular body 2 is composed of, for example, a plastic sheet having a thickness of 1 mm or more and a thickness of 3 mm or less. However, the strength required for maintaining the assembled state and the ease of assembling are ensured. Considering this, it is preferable that the plastic sheet has a thickness of 1.5 mm.

For example if sandwiching the rectangular body 2 with a thickness of 1.5 mm, projecting dimension _{W 2} of the convex portion 4a is set in the projecting dimension to be included within the scope of 0.1 mm to 0.2 mm. Also, the depression dimensions of the convex portion 4a opposed to the recess 4b is formed in a corresponding dimension to the projecting dimension W ₂ of the convex portion 4a.
In addition, the protrusion dimension of the convex part 4a and the hollow dimension of the recessed part 4b are changed according to the thickness of the rectangular body 2, a shape, and a magnitude | size.

  Further, the length of the notch 3 is formed to be ½ of the radius connecting the side 2a and the center 2b of the rectangular body 2, but it is ½ or less of the radius or 1 / The length may be changed to 2 or more.

Moreover, the open side outer end of the notch 3 is formed in a smooth curved surface shape (or a slope shape) that gradually narrows from the open side of the notch 3 toward the closing side.
That is, the flat portion continuous with the closed inner end of the cutout portion 3 of the one rectangular body 2 is inserted and guided toward the cutout portion 3 of the other rectangular body 2, so that one and the other rectangular bodies 2 are provided. The notch portions 3 can be easily inserted into each other.
In addition, you may form the open side outer end of the notch part 3 in the smooth slope shape which becomes narrow gradually toward the obstruction | occlusion side from the open side of this notch part 3. FIG.

Further, a folded ruled line 5 is formed at the front center plane portion of the rectangular body 2 so as to cross in a cross shape when viewed from the plane.
The folding ruled line 5 is formed on a line connecting the closed side inner ends of the notches 3 and 3 formed at opposing positions of the rectangular body 2, and has a depth and a length that allow the rectangular body 2 to be folded in half. Is formed. In other words, the rectangular body 2 is not punched in the thickness direction by a Thomson punching machine (not shown), and is formed in a V-shape when viewed from the end face on the long side so that the bottom of the folded ruled line 5 remains.

  In the embodiment, the two folded ruled lines 5 are formed so as to intersect with each other in a cross shape, but the four folded ruled lines 5 may be formed so as to intersect with each other in a US shape.

  The illustrated embodiment is constructed as described above, and the method for assembling the sheet-like rectangular body 1 will be described below.

  First, the rectangular body 2 of one sheet-shaped rectangular body 1 and the rectangular body 2 of the other sheet-shaped rectangular body 1 are orthogonal to each other, and a notch 3 at a desired location formed in both rectangular bodies 2. Are fitted together (see FIG. 3).

  A flat portion continuous with the closed inner end of the cutout 3 formed in one rectangular body 2 is inserted into the cutout 3 formed in the other rectangular body 2 perpendicularly from the open outer end. At the same time, the flat portion continuous with the closed inner end of the notch 3 formed in the other rectangular body 2 is inserted into the notch 3 formed in the one rectangular body 2 from the open side outer end. Furthermore, it inserts to the depth which the obstruction | occlusion side inner end of the notch parts 3 and 3 of the rectangular bodies 2 and 2 mutually contact | abut.

  When the cutout portions 3 formed in both the rectangular bodies 2 are fitted together, the other rectangular body 2 is inserted into the cutout portion 3 of the one rectangular body 2 and the other rectangular body. The convex portion formed in the cutout portions 3 of the two rectangular bodies 2 against the restoring force of the square body 2 itself, with respect to the insertion side plane portion of one of the rectangular bodies 2 inserted into the cutout portions 3 of the square 2 It is forcibly flexibly deformed in the thickness direction along the portion 4a and the recess 4b.

At the time of flexible deformation, the insertion side plane part of the one and the other rectangular bodies 2 tries to return to the original straight state by the restoring force of the square body 2 itself, so the insertion side plane parts of both the square bodies 2 Is strongly pressed against the protrusion 4a of the notch 3 (see FIG. 3).
For this reason, even if a tensile force is applied to the sheet-shaped rectangular body 1 in the direction opposite to the insertion direction, the two sheet-shaped rectangular bodies 1 are not easily separated from each other and are linearly fitted as in the conventional example. Compared to the structure, a large retaining resistance can be obtained.
Thereby, it is hard to produce backlash in the insertion part of the two sheet-like square bodies 1, and the state assembled | attached to the desired shape can be maintained.

When assembling into a desired shape, for example, another sheet-like rectangular body 1 is assembled from the front-rear direction, the left-right direction, or the oblique direction with respect to the horizontally disposed sheet-like square body 1. Alternatively, a plurality of sheet-like rectangular bodies 1 are assembled to each other by, for example, assembling the sheet-like rectangular bodies 1 in the vertical direction, the horizontal direction, or the oblique vertical direction with respect to the vertically arranged sheet-like rectangular bodies 1.
Thereby, it can assemble to shapes like the tower shape shown in FIG. 10 mentioned later, the box shape shown in FIG. 11, and the flower shape shown in FIG.

  Further, if the way of assembling the sheet-like rectangular body 1 is changed, in addition to the shapes shown in FIGS. 10 to 12, it is assembled into a fictitious shape created by the user or a shape that closely resembles an existing building, vehicle, animal, or the like. be able to. Furthermore, it can also be used for purposes and purposes such as figurines, exhibitions, and displays.

  Also, a method of fitting the notched portions 3 of the sheet-like rectangular body 1 with each other, and a method of folding the sheet-like rectangular body 1 at a right angle along the folding ruled line 5 or a desired angle (the bending shown in the upper right of FIG. 10). (See state). Thereby, the variation of the assembly | attachment shape using the sheet-like square body 1 increases, and it becomes possible to assemble in various shapes.

  As described above, a plurality of notches 3 formed on the side 2a of the sheet-like rectangular body 1 are fitted to each other and assembled, so that for example, assembling into a shape that closely resembles a building, vehicle, animal, or the like is enjoyed. In addition, it is possible to easily and easily perform an assembling operation or a disassembling operation into a desired shape. In addition, since a large contact resistance can be obtained as compared with the conventional linear fitting structure, the sheet-like rectangular body 1 can be firmly fixed, and the insertion portion of the sheet-like rectangular body 1 has a backlash. Sticking is unlikely to occur, and the assembled state can be maintained.

  Further, the rectangular body 2 of the sheet-like rectangular body 1 is colored to a desired color such as red, blue, yellow, or green, for example, or a pattern or a character is formed on one or both of the front and back surfaces of the rectangular body 2 Etc. may be printed.

  4 is a perspective view showing a sheet-like rectangular body 1 formed by superposing two rectangular bodies 2X and 2Y having the same shape, and FIG. 5 is a developed perspective view showing a separated state of the rectangular bodies 2X and 2Y in FIG. is there.

  In the sheet-like rectangular body 1 of this example, the rectangular body 2X, 2Y formed in the same size and shape as the rectangular body 2 corresponding to the rectangular body 2 has a thickness. Overlapping in the direction. In addition, the shapes of the rectangular bodies 2X and 2Y are matched so that the cutout portions 3 communicate with each other in the thickness direction, and the overlapping surfaces of the rectangular bodies 2X and 2Y are adhered with an adhesive, for example, or welded with a high frequency welding apparatus. For example, they may be joined together.

In embodiments, the thickness of the rectangular body 2X, 2Y is formed in the thickness of 1/2 of the notch width W ₁ of the notch 3. Alternatively, the sheet-shaped rectangular body 1 may be configured by superimposing a plurality of rectangular bodies 2X and 2Y formed to have a thickness of 1/2 or less, for example, three or four.

  Further, a folding ruled line 5 is formed on the line connecting the closed inner ends of the notches 3 formed at the opposing positions of the rectangular body 2X, and the rectangular body 2 is allowed to be folded in half.

  That is, the notch 3 formed in the side 2a of the rectangular body 2 of one sheet-like rectangular body 1 formed by superimposing the rectangular bodies 2X and 2Y and the other sheet formed by overlapping the rectangular bodies 2X and 2Y. The notched part 3 formed in the side part 2a of the rectangular body 2 of the rectangular body 1 is fitted together and assembled. Further, the sheet-like rectangular body 1 is assembled along the folding ruled line 5 at a right angle or by folding it at a desired angle. As a result, it is possible to achieve substantially the same operations and effects as in the above embodiment.

Moreover, either one of the rectangular bodies 2X and 2Y is formed to be transparent or translucent, and the other is colored in a desired color and overlapped with each other. Alternatively, it is possible to give decoration by colors by coloring both the rectangular bodies 2X and 2Y in different colors.
In addition, the convex part 4a and the recessed part 4b are formed in the notch 3 of the rectangular bodies 2X and 2Y in the same location.

FIG. 6 is a perspective view showing a sheet-like rectangular body 1 in which convex portions 4a and concave portions 4b are formed at different positions with respect to the cutout portions 3 of the rectangular bodies 2X and 2Y.
The sheet-like rectangular body 1 of this example has a convex portion 4a and a concave portion 4b formed in the cutout portion 3 of the rectangular body 2X, and a convex portion 4a and a concave portion 4b formed in the cutout portion 3 of the rectangular body 2Y. These are arranged at different positions with respect to the longitudinal direction of the notch 3.

  That is, the convex portion 4 a formed at the inner edge of the cutout 3 of the rectangular body 2 </ b> X is formed near the closed inner end of the cutout 3. Further, the convex portion 4 a formed at the other inner edge of the cutout portion 3 of the rectangular body 2 </ b> Y is formed near the open side outer end of the cutout portion 3.

  The notch 3 formed in the side 2a of the rectangular body 2X and the notch 3 formed in the side 2a of the square 2Y are fitted together. At the same time, the convex portion 4a and the concave portion 4b formed in the cutout portion 3 of the rectangular body 2X, and the convex portion 4a and the concave portion 4b formed in the cutout portion 3 of the square body 2Y, the one and the other rectangular bodies 2X, The 2Y insertion side plane portion is flexibly deformed in different directions.

However, since the insertion side plane portions of the rectangular bodies 2X and 2Y try to return to the original straight state by the restoring force of the rectangular bodies 2X and 2Y2, they are strongly pressed against the convex portion 4a of the notch portion 3. Pressed.
Thereby, since the one and other sheet-like square bodies 1 are firmly fixed, the operation and effect substantially equivalent to those of the above-described embodiment can be achieved.

(A), (b) of FIG. 7 is a top view which shows the sheet-like square body 1 which formed the translucent and the vertical line.
The sheet-like rectangular body 1 shown in (a) in the figure is semi-finished by pasting a milky white film on either one of the front and back surfaces of the rectangular body 2 or by forming a satin pattern on the one surface. It is transparent (see a in FIG. 7).

Further, the sheet-like rectangular body 1 shown in (b) in the drawing has a large number of vertical lines (or horizontal lines) arranged in parallel at equal intervals along one of the front and back surfaces of the rectangular body 2. Forming.
Thereby, the designability and decorativeness of the sheet-like rectangular body 1 can be enhanced.

(C), (d) of FIG. 8 is a top view which shows the sheet-like rectangular bodies 11 and 21 formed in the hexagon and the round shape.
A sheet-like rectangular body 11 shown in (c) of FIG. 8 is formed on the outer periphery of the rectangular body 12 formed in a hexagonal shape from the intermediate portion of the side portion 12a formed on the outer peripheral portion of the rectangular body 12. A notch 3 is formed toward the center 12 b of the shape 12. Further, six notches 3 are arranged at equal angles (or at equal intervals) with respect to the circumferential direction with the center portion 2b of the rectangular body 12 as the center.

Further, on the line connecting the closed side inner ends of the notches 3 formed at the opposing positions of the rectangular body 12, folding ruled lines 5 that allow the rectangular body 12 to be folded in two are formed.
That is, since a plurality of sheet-like rectangular bodies 11 are assembled to each other and assembled into a desired shape, the operation and effect substantially the same as those of the above embodiment can be achieved.

  A sheet-like rectangular body 21 shown in FIG. 8 (d) has a notch 3 formed on the outer peripheral portion 22a of the rectangular body 22 formed in a round shape, from the outer peripheral portion 22a of the rectangular body 22 toward the central portion 22b. Is formed. Further, eight notches 3 are arranged at equal angles (or at equal intervals) with respect to the circumferential direction around the center portion 22b of the rectangular body 22.

  Further, on the line connecting the closed inner ends of the notches 3 formed at the opposing positions of the rectangular body 22, folding ruled lines 5 that allow the rectangular body 22 to be folded in two are formed.

  That is, since a plurality of sheet-like rectangular bodies 21 are assembled to each other and assembled into a desired shape, the operation and effect substantially equivalent to those of the above-described embodiment can be achieved.

FIG. 9 is a cross-sectional view showing a sheet-like rectangular body 1 in which a mirror surface layer 6 is formed on the back surface side of a rectangular body 2 having translucency.
That is, light incident from the front surface side of the rectangular body 2 is reflected by the mirror surface layer 6 formed on the back surface side of the rectangular body 2. Since the reflected light is emitted from the surface side of the rectangular body 2, the surface of the sheet-like rectangular body 1 appears to shine.
Thereby, using the sheet-like rectangular body 1 on which the mirror surface layer 6 is formed, it is possible to improve the designability and decorativeness of a shaped article assembled into a desired shape.

  Moreover, if irregularities are formed on the reflecting surface of the mirror surface layer 6 or if a dot-like or slit-like lens is formed, the light that has passed through the rectangular body 2 will be irregularly reflected by the mirror surface layer 6, resulting in a high decorative effect. Is obtained. The mirror surface layer 6 may be formed on the surface side or the middle part of the rectangular body 2.

  In the other embodiments shown in FIGS. 4 to 9, the same components as those of the sheet-like rectangular body 1 in the embodiments shown in FIGS. .

FIG. 10 is a perspective view showing an example in which the sheet-like rectangular bodies 1 are assembled in a hierarchical shape and assembled into a tower shape as shown in the figure.
FIG. 11 is a perspective view showing an example in which the sheet-like rectangular body 1 is assembled into a solid square and assembled into a box shape as shown in the figure.
FIG. 12 is a perspective view showing an example in which the sheet-like rectangular body 1 is assembled into a petal shape and assembled into a flower shape as shown in the figure.
That is, the other sheet-like rectangular bodies 1 are assembled to the horizontally disposed sheet-like rectangular bodies 1 from the front-rear direction, the left-right direction, or the oblique direction. Alternatively, when the sheet-like rectangular body 1 is assembled to the vertically arranged sheet-like rectangular body 1 from the up-down direction, the left-right direction, or the oblique up-down direction, the desired shape as shown in FIGS. Can be easily assembled.

  In addition, you may assemble by using any one of the said sheet-like square bodies 11 and 21, or combining several types of the said sheet-like square bodies 1, 11, and 21.

  The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

  Instead of the plastic sheet of the embodiment, the sheet-like rectangular body 1 may be constituted by, for example, a plastic plate, a metal plate, a wooden board, a plywood, a corrugated paper, a cardboard, or an injection molded product.

DESCRIPTION OF SYMBOLS 1 ... Sheet-like rectangular body 2, 2X, 2Y ... Rectangular body 3 ... Notch part 4a ... Convex part 4b ... Recessed part 5 ... Bending ruled line 6 ... Mirror surface layer 11,22 ... Sheet-like rectangular body 21,22 ... Rectangular body

Claims (6)

A sheet-like rectangular body that is assembled into a desired shape by assembling sheet-like rectangular bodies having a plurality of notches,
A plurality of notches are formed on the outer periphery of the rectangular body from the outer periphery to the center of the rectangular body,
A sheet-like rectangular body in which a cutout portion of the rectangular body is formed to have a cutout width in which a flat portion continuous with a closed inner end of the cutout portion formed in the rectangular body is sandwiched in the thickness direction. The sheet-like rectangular body,
A plurality of rectangular bodies formed in the same size and shape as the sheet-like rectangular bodies are overlapped in the thickness direction, and the shapes are integrated so that the cutout portions of the respective rectangular bodies communicate in the thickness direction. The sheet-like rectangular body according to claim 1, which is bonded to each other. A convex portion for flexibly deforming the flat portion in the thickness direction is formed on one inner edge or both inner edge portions of the cut portion so as to face the flat portion of the rectangular body inserted into the cut portion. Item 3. The sheet-like rectangular body according to Item 1 or 2. Protrusions for flexibly deforming the flat surface portion in the thickness direction are formed on the inner edge portion on one side and the inner edge portion on the other side of the notch portion so as to face the flat surface portion of the rectangular body inserted into the notch portion. In addition, the sheet-like rectangular body according to claim 1 or 2, wherein the convex portions are arranged at different positions on one side inner edge portion and the other side inner edge portion of the notch portion. The folding ruled line in which bending of the rectangular body is allowed along the line is formed on a line connecting the closed side inner ends of the notches formed at the opposing positions of the rectangular body. The sheet-like rectangular body as described in any one. The sheet-like square body according to any one of claims 1 to 5, wherein the square body is formed of a plastic sheet having flexibility.

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