JP3940155B2 - 3D puzzle and formwork - Google Patents

Description

  The present invention relates to a three-dimensional puzzle that forms a specific three-dimensional shape by combining a plurality of three-dimensional pieces, and a form of a three-dimensional piece.

  Conventionally, in junior high school entrance examinations and national civil servant examinations in Japan, there are questions about the shape of the cut surface and the area of the cut surface when a three-dimensional shape is cut in a certain direction. When taking the exam, it is necessary to fully develop mathematical reasoning ability in advance in order to derive correct answers for such problems.

  Registered Utility Model No. 3046068 discloses three basic solids A whose base is an equilateral triangle and whose sides are right isosceles triangles, and four basic solids B whose base is a regular square and whose sides are equilateral triangles, A three-dimensional puzzle composed of three basic solids C having a regular triangle on the bottom and a regular triangle on the side is disclosed. In this three-dimensional puzzle, three types of triangular solids A to C are brought into close contact with each other or combined as a building block to form various three-dimensional figures. In addition, it is said that an adhesive or a pressure-sensitive adhesive may be applied to each solid contact surface, or a surface magnet may be applied to the back surface.

On the other hand, a conventionally known eraser has a three-dimensional shape, but was intended to erase a pencil-written character or the like, so only the shape and appearance suitable for erasing were considered. For example, the eraser described in Patent Document 1 is formed so that only the shape that makes it easy to erase is considered, and the entire eraser has corners.
Registered Utility Model No. 3046068 JP 2004-034624 A Japanese Utility Model Publication No. 3-125376 JP 2005-148578 A

  In general, it is very difficult to imagine the shape, pattern, and the like of the cut surface depending on the position and angle of cutting various solids that are often problematic in geometry and the like. Also, it is not easy to create them by drawing a plan view. In order to cultivate the ability to solve the problem of the shape and area of the cut surface when the solid shape is cut in a certain direction in this way, it is beneficial to actually cut the solid.

  However, conventionally, there has been no three-dimensional puzzle for recognizing a three-dimensional cut surface. For this reason, in order to accurately recognize and grasp the cut surface of the three-dimensional shape, there was only a method of creating a solid with materials such as paper and clay, and actually cutting it and seeing it, but it is difficult to create it by an individual And inefficient.

  This invention is made | formed in view of such a situation, and it aims at providing the solid puzzle and formwork which can grasp | ascertain the cut surface of a solid shape easily.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, a three-dimensional puzzle according to the present invention includes a puzzle body formed as a regular polyhedron, a sphere, a cone, a regular polygonal pyramid, a cylinder, or a regular polygonal column, and a plurality of solids that constitute the puzzle body and can be separated from each other. And at least one cut surface that divides the puzzle body, not parallel to any surface of the puzzle body, and all or part of the solid piece is divided by the cut surface. It is characterized by having.

  Thus, since at least one cutting surface for dividing the puzzle body is provided, the shape and size when the puzzle body is cut by the cutting surface can be easily recognized. In addition, since all or a part of the three-dimensional element is divided by the cut surface, it is possible to form a puzzle body by combining the three-dimensional elements and to realize a puzzle that forms the cut surface. In this case, the solid pieces may be congruent solids or may have different shapes.

  (2) Moreover, in the three-dimensional puzzle according to the present invention, when the puzzle body is a sphere, a cylinder, a cone, a regular polyhedron, or a regular polygonal cylinder, the three-dimensional pieces may constitute the puzzle body. It is characterized by being shaped as a congruent solid.

  Thus, when the puzzle body is a sphere, a cylinder, a cone, a regular polyhedron, or a regular polygonal cylinder, each solid piece is molded as a mutually congruent solid that can constitute the puzzle body, so that it is cut A pattern peculiar to the surface can be expressed. In particular, when a part of the three-dimensional element pieces and another part of the three-dimensional element pieces have a color difference from each other, it becomes easy to recognize the pattern of the cut surface.

  (3) Further, in the three-dimensional puzzle according to the present invention, all or a part of the puzzle body and the three-dimensional element piece may be inscribed or included in the puzzle body, a sphere, a cone, a regular polygonal cone, a cylinder, or a regular many It is characterized by being cut by at least one surface of a prism.

  As described above, all or part of the puzzle body and the three-dimensional element are cut by at least one surface of a sphere, a cone, a regular polygonal pyramid, a cylinder, or a regular polygonal column that is inscribed or included in the puzzle body. It becomes possible to easily recognize how the puzzle body and the solid piece are cut off by the surface. Thereby, the significance as a teaching material can be raised. Moreover, since the puzzle body and the solid piece are divided into many parts by the surface, the difficulty of the puzzle can be increased.

  (4) Moreover, in the three-dimensional puzzle according to the present invention, when the puzzle body is a regular polyhedron or a regular polygonal column, the cut surface is at least one vertex of the puzzle body or a midpoint of at least one side. It is characterized by passing through.

  Thus, when the puzzle body is a regular polyhedron or a regular polygonal cylinder, the cut surface passes through at least one vertex of the puzzle body or the midpoint of at least one side. A well-known figure such as an isosceles triangle, a regular triangle, or a regular hexagon can be obtained. Thereby, it becomes possible to raise the significance as a teaching material.

  (5) The three-dimensional puzzle according to the present invention further includes a case body having a closed surface at one end and an opening at the other end, and a portion other than the opening circumscribing the puzzle body. It is said.

  Such a case body is not parallel to any surface of the puzzle body, and even if three-dimensional pieces cut by at least one cutting surface that divides the puzzle body are stacked, they do not slide down. Then, by combining the three-dimensional pieces, the puzzle body can be accurately formed inside the case body. In addition, it is also possible to make the three-dimensional element pieces detachable by attaching irregularities or attaching an adhesive, a magnet, a magnet and a metal as anti-slip means to the surface of the three-dimensional element. .

  (6) Moreover, in the solid puzzle according to any one of claims 1 to 5, the formwork according to the present invention forms a puzzle body and forms a plurality of solid pieces that can be separated from each other. It is characterized by that.

  Thereby, it becomes possible to shape | mold each solid piece of the solid puzzle which concerns on this invention. For example, it is possible to make a three-dimensional puzzle by pushing clay, resin, or the like into the mold according to the present invention and taking it out after hardening.

  According to the present invention, since at least one cutting surface for dividing the puzzle body is provided, the shape and size when the puzzle body is cut by the cutting surface can be easily recognized. In addition, since all or a part of the three-dimensional segment is divided by the cut surface, it is possible to form a puzzle body by combining the three-dimensional pieces and realize a three-dimensional puzzle that forms the cut surface. Thereby, it becomes possible to provide a three-dimensional puzzle as an intelligent toy for recognizing a three-dimensional cut surface.

  In order to cultivate the ability to solve the problem of the shape and area of the cut surface when the solid shape is cut in a certain direction, the present inventor is beneficial to actually cut the solid, Paying attention to the fact that there was no 3D puzzle for recognizing the cut surface of the 3D shape, combining a plurality of 3D pieces to form a puzzle body, and this puzzle body and at least one 3D piece It has been found that by cutting at least one cut surface, the shape, size and pattern of the three-dimensional cut surface can be easily recognized, and the present invention has been achieved.

  That is, a three-dimensional puzzle according to the present invention includes a puzzle body formed as a regular polyhedron, a sphere, a cone, a regular polygonal pyramid, a cylinder, or a regular polygonal column, and a plurality of solids that constitute the puzzle body and can be separated from each other. And at least one cut surface that divides the puzzle body, not parallel to any surface of the puzzle body, and all or part of the solid piece is divided by the cut surface. It is characterized by having.

  Thereby, this inventor enabled it to recognize easily the shape and magnitude | size when a puzzle main body was cut | disconnected by the cut surface. In addition, by combining solid pieces, it was possible to form a puzzle body and to realize a puzzle that formed a cut surface. Embodiments of the present invention will be specifically described below with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view of a three-dimensional puzzle according to the first embodiment. In the three-dimensional puzzle 100, eight solid elements 101 formed in a cubic shape are stacked to constitute a puzzle body 102 having a cubic shape. The three-dimensional puzzle 100 includes two cut surfaces 103 a and 103 b that are not parallel to any surface of the puzzle body 102 and divide the puzzle body 102.

  The cut surface 103 a is a plane that passes through the vertices A, B, and C of the puzzle body 102. A part of the puzzle body 102 and the solid piece 101 is divided by the cut surface 103a. The cut surface 103b includes a midpoint of the side AF of the puzzle body 102, a midpoint of the side CF, a midpoint of the side CE, a midpoint of the side BE, a midpoint of the side BD, and a midpoint of the side AD. A plane passing through six points. A part of the puzzle body 102 and the solid piece 101 is divided by the cut surface 103b.

  FIG. 2 is a perspective view showing a state in which a part of the puzzle body 102 and the solid piece 101 is cut by the cut surface 103a. When the puzzle body 102 is divided at the cut surface 103a passing through the vertices A, B, and C of the puzzle body 102, a regular triangular cross section appears as shown in FIG.

  FIG. 3 is a perspective view showing a state in which a part of the puzzle body 102 and the three-dimensional element piece 101 is cut by the cut surface 103b. 1 and 2, the midpoint of the side AF, the midpoint of the side CF, the midpoint of the side CE, the midpoint of the side BE, the midpoint of the side BD, and the midpoint of the side AD When the puzzle body 102 is divided at the cutting plane 103b passing through the six points, a regular hexagonal cross section appears as shown in FIG.

  FIG. 4 is a perspective view of an assembly of the solid element pieces 101 sandwiched between the cut surface 103a and the cut surface 103b. FIG. 5 is a perspective view of an assembly of the smaller three-dimensional element pieces 101 when the puzzle body 102 and a part of the three-dimensional element piece 101 are divided by the cut surface 103b. Among these three-dimensional pieces 101, one cut by the cut surface 103 a or the cut surface 103 b has a specific three-dimensional shape and is an element of the three-dimensional puzzle 100.

  FIG. 6 is a perspective view showing the three-dimensional element piece 101 cut by the cut surface 103a or the cut surface 103b. The solid element 101a is a solid element including the vertex A in FIG. 1, and is formed by being cut by the cut surface 103a and the cut surface 103b. The solid element 101b is a solid element including the apex B in FIG. 1 and is formed by being cut by the cut surface 103a. The solid element 101c is a solid element including the vertex G in FIG. 1 and is formed by being cut by the cut surface 103a. The three-dimensional shape shown in FIG. 6 has been described as a three-dimensional element, but these three-dimensional shapes can also be used as a three-dimensional element mold.

  As described above, according to the three-dimensional puzzle according to the first embodiment, the puzzle main body 102 is cut because the puzzle main body 102 and the two cut surfaces 103a and 103b that divide a part of the three-dimensional element piece 101 are provided. It becomes possible to easily recognize the shape and size when cut by the surface. In addition, since a part of the solid piece 101 is divided by the cut surfaces 103a and 103b, the puzzle body 102 is formed by combining the solid pieces 101, and a solid puzzle that forms the cut surface 103a or 103b is realized. It becomes possible. Thereby, it becomes possible to provide a three-dimensional puzzle as an intelligent toy for recognizing a three-dimensional cut surface.

(Second Embodiment)
FIG. 7 is a perspective view of a three-dimensional puzzle according to the second embodiment. As in the first embodiment, the three-dimensional puzzle 200 is configured by stacking eight three-dimensional pieces 101 formed in a cubic shape to constitute a puzzle body 102 having a cubic shape. The three-dimensional puzzle 200 includes two cut surfaces 103 a and 103 c that are not parallel to any surface of the puzzle body 102 and divide the puzzle body 102. The second embodiment is different from the first embodiment in that a cut surface 103c is provided instead of the cut surface 103b.

  The cut surface 103a is a plane that passes through the vertices A, B, and C of the puzzle body 102, as in the first embodiment. A part of the puzzle body 102 and the solid piece 101 is divided by the cut surface 103a. On the other hand, the cut surface 103c is a plane passing through four points of the vertex F of the puzzle body 102, the midpoint of the side CE, the vertex B, and the midpoint of the side AD. The puzzle body 102 and a part of the solid piece 101 are divided by the cut surface 103c.

  FIG. 8 is a perspective view showing a state in which a part of the puzzle body 102 and the three-dimensional element piece 101 is cut by the cut surface 103a, and FIG. 9 shows one of the puzzle body 102 and the three-dimensional element piece 101 at the cut surface 103a. It is a perspective view of the aggregate | assembly of the solid element piece 101 with a smaller magnitude | size when a part is divided | segmented. When the puzzle body 102 is divided by a cut surface 103a passing through the vertices A, B, and C of the puzzle body 102, a cross section of an equilateral triangle appears as shown in FIG.

  FIG. 10 is a perspective view showing a state in which a part of the puzzle body 102 and the three-dimensional element piece 101 is cut by the cut surface 103c. When the puzzle body 102 is divided by a cutting plane 103c passing through the four points of the vertex F, the middle point of the side CE, the vertex B, and the middle point of the side AD shown in FIGS. A diamond-shaped cross section appears as shown in FIG.

  FIG. 11 is a perspective view of an assembly of the solid element pieces 101 sandwiched between the cut surface 103a and the cut surface 103c. Among these solid pieces 101, those cut by the cut surface 103 a or the cut surface 103 c have a specific three-dimensional shape and are elements of the three-dimensional puzzle 200.

  FIG. 12 is a perspective view showing the three-dimensional element piece 101 cut by the cut surface 103a or the cut surface 103b. The solid element 101d is an upper solid element obtained by cutting the solid element including the vertex D in FIG. 7 by the cut surface 103c. The solid element 101e is an upper solid element obtained by cutting the solid element including the vertex F in FIG. 7 by the cut surface 103c. Further, the three-dimensional element piece 101f is formed by cutting the three-dimensional element piece including the apex B in FIG. 7 by the cut surface 103a and the cut surface 103c. The solid element 101g is a solid element including the vertex A in FIG. 7, and is formed by being cut by the cut surface 103a and the cut surface 103a. In addition, although the three-dimensional shape shown in FIG. 12 was demonstrated as a solid element, these three-dimensional shapes also hold | maintain as a metal mold | die of a solid element.

  As described above, according to the three-dimensional puzzle according to the second embodiment, the puzzle main body 102 is cut because the puzzle main body 102 and the two cut surfaces 103a and 103c that divide a part of the three-dimensional element piece 101 are provided. It becomes possible to easily recognize the shape and size when cut by the surface. In addition, since a part of the solid piece 101 is divided by the cut surfaces 103a and 103c, the puzzle body 102 is formed by combining the solid pieces 101, and a solid puzzle that forms the cut surface 103a or 103c is realized. It becomes possible. Thereby, it becomes possible to provide a three-dimensional puzzle as an intelligent toy for recognizing a three-dimensional cut surface.

(Third embodiment)
FIG. 13 is a perspective view of a three-dimensional puzzle according to the third embodiment. In the three-dimensional puzzle 300, the puzzle body 301 is cut by the surfaces of a cylinder 302, a sphere 303, and a cone 304 that are inscribed or included therein. Similar to the first and second embodiments, the puzzle body 301 is composed of a plurality of three-dimensional pieces that constitute the puzzle body 301 and are separable from each other. And at least one cutting surface that divides the puzzle body 301. In addition, in order to avoid complication of drawing, the solid element and the cut surface are not shown in FIG.

  According to the three-dimensional puzzle according to the third embodiment, all or a part of the puzzle body and the three-dimensional element are cut by the surfaces of the sphere, the cone, and the cylinder inscribed or included in the puzzle body. It is possible to easily recognize how the puzzle body and the solid piece are cut off by the surface. Thereby, the significance as a teaching material can be raised. Moreover, since the puzzle body and the solid piece are divided into many parts by the surface, the difficulty of the puzzle can be increased.

(Fourth embodiment)
FIG. 14 is a perspective view of a three-dimensional puzzle according to the fourth embodiment. This three-dimensional puzzle is composed of a case body 400, a puzzle body 102, and a three-dimensional element piece 101 constituting the puzzle body 102. The case body 400 has a closed surface 401 at one end, an opening 402 at the other end, and a part other than the opening 402 circumscribes the puzzle body 102. In addition, in order to avoid complication of drawing, the cut surface is not shown in FIG.

  According to the three-dimensional puzzle according to the fourth embodiment, the case body is not parallel to any surface of the puzzle body, and the three-dimensional pieces cut by at least one cutting plane that divides the puzzle body may be stacked. , It will not slide down. Then, by combining the three-dimensional pieces, the puzzle body can be accurately formed inside the case body. In addition, it is also possible to make the three-dimensional element pieces detachable by attaching irregularities or attaching an adhesive, a magnet, a magnet and a metal as anti-slip means to the surface of the three-dimensional element. .

(Fifth embodiment)
FIG. 15 is a perspective view of a mold according to the fifth embodiment. The mold 500 includes a recess 501 that defines the outer shape of the solid element 101. When clay or resin is packed in the concave portion 501 of the mold 500 and the clay or resin protruding from the surface of the mold 500 is removed with a spatula or the like, the solid element 101 is formed. In the case of using a material that hardens over time, the solid solid piece 101 can be obtained by taking out the solid piece 101 from the mold 500 after sufficient time has passed. FIG. 15 only shows an example of the formwork. The inventor naturally envisions a formwork other than the formwork shown in FIG.

(Sixth embodiment)
In the sixth embodiment, a three-dimensional element piece is formed of an eraser material. In addition to its original use as an eraser, it serves as a teaching material that recognizes a three-dimensional cut surface. FIG. 16 is a perspective view of an eraser according to the sixth embodiment. The three-dimensional element 1 is an eraser material and is formed into a cube. The eraser 10 is configured as a collective solid 2 by combining 36 solid elements 1 in a vertical, horizontal, and height of 3 × 4 × 3. On the left side of FIG. 16, a set solid 2 as a rectangular parallelepiped is shown. The three-dimensional element pieces 1 may be separated from each other by simply stacking them, but here, it is assumed that they are in close contact with each other by a technique such as adhesion or pressure bonding.

  Since the solid element 1 is formed of an eraser material, the aggregate solid 2 can be easily cut with a cutter such as a cutter knife. On the left side of FIG. 16, when the collective solid 2 is cut along a plane passing through the points A, B, and C, a cut surface as shown on the right side of FIG. 16 appears. In this case, the cut surface is an isosceles triangle. As shown in FIG. 16, by coloring each solid piece 1, it is possible to observe a unique pattern on the cut surface.

  Thus, according to the sixth embodiment, it is possible to easily recognize the shape, size, and pattern of the cut surface when the collective solid is cut.

(Seventh embodiment)
FIG. 17 is a perspective view of an eraser according to the seventh embodiment. In the seventh embodiment, the eraser 20 constitutes the collective solid 3 by combining 64 solid elements 1 with vertical, horizontal, and height of 4 × 4 × 4. When the collective solid 2 is cut along a plane passing through the points A, B, and C on the left side of FIG. 17, a cut surface as shown on the right side of FIG. 17 appears. In this case, the cut surface is a regular hexagon. In addition, each solid piece 1 shall be mutually adhere | attached by methods, such as adhesion | attachment and crimping | compression-bonding.

  Thus, according to the seventh embodiment, it is possible to easily recognize the shape, size, and pattern of the cut surface when the collective solid is cut.

(Eighth embodiment)
FIG. 18 is a perspective view of an eraser according to the eighth embodiment. In the eighth embodiment, the eraser 30 uses 20 solid segments 1 so that a vertically, horizontally symmetric space is generated in the center portion of a cube of 3 × 3 × 3 height, width, and height. As a result, the collective solid 4 is formed. On the left side of FIG. 18, when the collective solid 3 is cut along a plane passing through the points A, B, and C, a cut surface as shown on the right side of FIG. 18 appears. In this case, the cut surface is a figure in which three rhombuses share one vertex. Note that the three-dimensional element pieces 1 are in close contact with each other by a technique such as adhesion or pressure bonding.

  Thus, according to the eighth embodiment, it is possible to easily recognize the shape, size, and pattern of the cut surface when the collective solid is cut.

(Ninth embodiment)
In the ninth embodiment, the collective solid is determined in advance as a cube, and the collective solid is cut so as to have at least one pair of cut surfaces. Further, the shape of the cut surface is changed depending on the way of cutting. FIG. 19 (a) shows a state in which a collective solid as a cube is cut so that a pair of cut surfaces 40a, 40b is a regular hexagon. FIG. 19B shows a state in which the solid cube as a cube is cut so that the pair of cut surfaces 40c and 40d are pentagonal . FIG. 19 (c) shows a state in which the collective solid as a cube is cut so that the pair of cut surfaces 40e and 40f are rhombuses.

  Thus, according to the ninth embodiment, the collective solid has at least one set of cut surfaces and can be divided by the cut surfaces, so the user cuts the collective solid using a blade or the like. It is possible to recognize the shape and size of the cut surface and the pattern appearing on the cut surface.

(Tenth embodiment)
20 and 21 are perspective views of an eraser according to the tenth embodiment. In FIG. 20, the eraser 50 forms a set solid as a cube by combining eight solid pieces 1 as 2 × 2 × 2. And the cube is cut | disconnected and coloring is given to one set of cut surfaces 50a and 50b.

  FIG. 21 shows a case where each solid element 1a and each solid element 1b are color-coded and combined so that different colors are adjacent to each other to form a collective solid as a cube. When this cube is cut, a color-coded pattern appears on the pair of cut surfaces 60a and 60b.

  According to the tenth embodiment, the boundary of the cut surface is clarified, and the shape, size, or pattern of the cut surface can be easily recognized.

(Eleventh embodiment)
FIG. 22 is a perspective view of an eraser according to the eleventh embodiment. The eraser 70 according to the eleventh embodiment constitutes a collective solid 71 as a cube by combining 64 solid pieces 1 with a vertical, horizontal, and height of 4 × 4 × 4. And the mode at the time of cutting out the collective solid 71 by the spherical surface centering on the point A and having a radius equal to AB is shown. Since such a cutting method is not easy and requires skill, it is desirable to cut in advance at the manufacturing stage.

  By observing this cut surface, the collective solid 71 can easily recognize the number of solid pieces 1 cut by a spherical surface having a radius equal to AB around the point A and the shape of the cut surface. Become.

(Twelfth embodiment)
FIG. 23 is a perspective view of a three-dimensional puzzle according to the twelfth embodiment. This three-dimensional puzzle is configured based on the three-dimensional element piece 1c as in the above embodiments. As shown in FIG. 23A, the three-dimensional element 1c has an L-shaped three-dimensional shape by connecting three cubes at right angles. This is based on the fact that the three-dimensional element 1c has a three-dimensional shape so as to form a collective solid as a cube. As a result, as shown in FIG. 23B, a set solid 81 as a cube can be configured by combining nine solid segments 1c. In this way, the solid cube 81 is composed of the solid element 1c, so that a solid puzzle for assembling a cube can be realized by separating and dividing the solid cube 81. In the twelfth embodiment, it is assumed that the three-dimensional shapes of all the solid elements 1c are congruent (the same size and shape).

  The solid element 1c is formed of a soft material that can be cut. Examples of the soft material that can be cut include synthetic resins such as an eraser material, wax, paper, wood, agar, rubber, and the like. Therefore, according to the three-dimensional puzzle according to the twelfth embodiment, since the solid element 1c is formed of a soft material that can be cut, when a collective solid is formed by combining a plurality of solid elements, a knife or the like is formed. It becomes easy to cut the assembly solid using. Thereby, it becomes possible to easily recognize the shape and size of the cut surface when the collective solid is cut.

(13th Embodiment)
The three-dimensional puzzle according to the thirteenth embodiment constitutes a collective solid as a cube by combining eight solid pieces in a vertical, horizontal, and height of 2 × 2 × 2. And as shown to Fig.24 (a), it can be divided | segmented by cut | disconnecting an assembly solid by changing an angle based on a fixed ridgeline. FIG. 24 (b) shows an example of dividing into 5 pieces, and FIGS. 24 (c) and (d) show an example of dividing into 7 pieces. Moreover, FIG.24 (e) shows the example divided | segmented into 6 pieces, FIG.24 (f) shows the example divided | segmented into 2 pieces.

  Thus, according to the three-dimensional puzzle according to the thirteenth embodiment, a specific solid (here, a cube) can be cut along a plurality of cut surfaces, and the separated elements can be made into a solid element. In this case, it can be used as a puzzle that reproduces the cut surface by combining solid pieces and as a puzzle that completes the original solid. In addition, by completing a puzzle that reproduces the cut surface, it is possible to grasp its shape and area.

  Note that the cut surface may be a flat surface or a curved surface. In addition, some of the plurality of three-dimensional elements may have a color difference from another part of the three-dimensional elements. Further, the three-dimensional element piece may be formed of an eraser material.

  That is, the present invention is an eraser that constitutes an aggregate solid having a specific three-dimensional shape by combining a plurality of three-dimensional pieces formed of an eraser material, all or a part of each of the three-dimensional pieces. Can also be configured as an eraser characterized by having the same or different three-dimensional shapes.

  Since the three-dimensional element is formed of the eraser material, when the aggregate solid is configured by combining a plurality of three-dimensional elements, it becomes easy to cut the aggregate solid using a blade or the like. Thereby, it becomes possible to easily recognize the shape and size of the cut surface when the collective solid is cut. In addition, since all or a part of the three-dimensional element pieces have the same or different three-dimensional shapes, it is possible to form a plurality of types of collective solids. For example, when all the solid elements are made into cubes, the collective solid can be configured as a cube or a rectangular parallelepiped by stacking them. In addition, for example, a specific solid can be cut by a plurality of cut surfaces, and each separated element can be a solid element. In this case, by combining solid pieces, it is possible to reproduce the cut surface and grasp its shape and area. In addition, the three-dimensional shapes of the three-dimensional elements may be different so that each three-dimensional element forms a solid having a specific three-dimensional shape as an aggregate solid. As described above, it is possible to provide an eraser as an intelligent toy for recognizing a three-dimensional cut surface.

  In the eraser according to the present invention, all or a part of each of the three-dimensional element pieces may be colored differently. In this way, since all or a part of each solid element is colored differently, the boundary surface between the solid elements becomes clear. This makes it easier to recognize the shape and size of the cut surface and the pattern appearing on the cut surface when the collective solid is cut.

  Further, in the eraser according to the present invention, the collective solid formed by combining the solid pieces may have at least one pair of cut surfaces and can be divided by the cut surfaces. Thus, the collective solid has at least one set of cut surfaces and can be divided by the cut surfaces, so that the shape and size of the cut surface can be obtained without the user cutting the collective solid using a blade or the like. Now, it is possible to recognize a pattern appearing on the cut surface.

  Further, the three-dimensional puzzle according to the present invention is a three-dimensional puzzle that forms a collective solid having a specific three-dimensional shape by combining a plurality of three-dimensional pieces, and each of the three-dimensional pieces is a soft material that can be cut. And all or part of each of the three-dimensional element pieces may have the same or different three-dimensional shapes. Thus, since the solid element is formed of a soft material that can be cut, it becomes easy to cut the collective solid using a blade or the like when a collective solid is formed by combining a plurality of solid elements. Examples of the soft material that can be cut include synthetic resins such as an eraser material, wax, paper, wood, agar, rubber, and the like. Thereby, it becomes possible to easily recognize the shape and size of the cut surface when the collective solid is cut. In addition, since all or a part of the three-dimensional element pieces have the same or different three-dimensional shapes, it is possible to form a plurality of types of collective solids. For example, when all the solid elements are made into cubes, the collective solid can be configured as a cube or a rectangular parallelepiped by stacking them. In addition, for example, a specific solid can be cut by a plurality of cut surfaces, and each separated element can be a solid element. In this case, it can be used as a puzzle that reproduces the cut surface by combining solid pieces and as a puzzle that completes the original solid. In addition, by completing a puzzle that reproduces the cut surface, it is possible to grasp its shape and area. Moreover, you may determine the three-dimensional shape of each solid element so that each solid element may comprise the solid which has a specific three-dimensional shape as an assembly solid. For example, when the shape of a solid element is an L-shaped three-dimensional shape by connecting three cubes at right angles, an aggregate solid as a cube can be configured by combining nine solid elements. It becomes possible. As described above, it is possible to provide a three-dimensional puzzle as an intelligent toy for recognizing a three-dimensional cut surface.

  Moreover, in the three-dimensional puzzle according to the present invention, all or a part of each of the three-dimensional pieces may be colored differently or formed of different soft materials. In this way, all or part of each solid element is colored differently or molded with a different soft material, so that the boundary surface between the solid elements can be clarified. . This makes it easier to recognize the shape and size of the cut surface and the pattern appearing on the cut surface when the collective solid is cut.

  Moreover, in the three-dimensional puzzle according to the present invention, the collective solid formed by combining the three-dimensional pieces may have at least one pair of cut surfaces and can be divided by the cut surfaces. Thus, the collective solid has at least one set of cut surfaces and can be divided by the cut surfaces, so that the shape and size of the cut surface can be obtained without the user cutting the collective solid using a blade or the like. Now, it is possible to recognize a pattern appearing on the cut surface.

  Although each embodiment has been described above, the present invention is not limited thereto. For example, not only when the collective solid is a cube or a rectangular parallelepiped, but also about a three-dimensional shape composed of a prism, cone, cylinder, sphere, truncated cone, regular polyhedron (regular octahedron, regular dodecahedron, etc.) or a combination thereof. The present invention can be realized. Also, the three-dimensional element can take such various three-dimensional shapes.

It is a perspective view of the three-dimensional puzzle which concerns on 1st Embodiment. It is a perspective view which shows the state by which the puzzle main body 102 and some solid element | device pieces 101 were cut | disconnected by the cut surface 103a. It is a perspective view which shows the state by which the puzzle main body 102 and some solid element | device pieces 101 were cut | disconnected by the cut surface 103b. It is a perspective view of the aggregate | assembly of the solid element piece 101 pinched | interposed by the cut surface 103a and the cut surface 103b. FIG. 6 is a perspective view of an assembly of three-dimensional element pieces 101 having a smaller size when a part of the puzzle body 102 and the three-dimensional element piece 101 is divided by a cut surface 103b. It is a perspective view which shows the solid element piece 101 cut | disconnected by the cut surface 103a or the cut surface 103b. It is a perspective view of the three-dimensional puzzle which concerns on 2nd Embodiment. It is a perspective view which shows the state by which the puzzle main body 102 and some solid element | device pieces 101 were cut | disconnected by the cut surface 103a. FIG. 3 is a perspective view of an assembly of three-dimensional element pieces 101 having a smaller size when a puzzle body 102 and a part of the three-dimensional element piece 101 are divided by a cut surface 103a. It is a perspective view which shows the state by which the puzzle main body 102 and some solid element | device pieces 101 were cut | disconnected by the cut surface 103c. It is a perspective view of the aggregate | assembly of the solid element piece 101 pinched | interposed by the cut surface 103a and the cut surface 103c. It is a perspective view which shows the solid element piece 101 cut | disconnected by the cut surface 103a or the cut surface 103b. It is a perspective view of the three-dimensional puzzle which concerns on 3rd Embodiment. It is a perspective view of the three-dimensional puzzle which concerns on 4th Embodiment. It is a perspective view of a formwork concerning a 5th embodiment. It is a perspective view of the eraser which concerns on 6th Embodiment. It is a perspective view of the eraser which concerns on 7th Embodiment. It is a perspective view of the eraser which concerns on 8th Embodiment. (A) shows a state in which a set solid as a cube is cut so that a pair of cut surfaces 40a, 40b is a regular hexagon. (B) shows a state in which the set solid as a cube is cut so that the pair of cut surfaces 40c and 40d are pentagonal . (C) shows a state in which a set solid as a cube is cut so that the pair of cut surfaces 40e and 40f are rhombuses. It is a perspective view of the eraser which concerns on 9th Embodiment. It is a perspective view of the eraser which concerns on 10th Embodiment. It is a perspective view of the eraser which concerns on 11th Embodiment. It is a perspective view of the three-dimensional puzzle which concerns on 12th Embodiment. (A) shows a mode that the collective solid can be divided by cutting at different angles based on the fixed ridgeline. (B) shows the example divided | segmented into 5 pieces, (c) and (d) shows the example divided | segmented into 7 pieces. (E) shows the example divided | segmented into 6 pieces, (f) shows the example divided | segmented into 2 pieces.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solid element 1b Solid element 1c Solid element 2 Collective solid 3 Collective solid 4 Collective solid 10 Eraser 20 Eraser 30 Eraser 40a, 40b One set cut surface 40c, 40d One set cut surface 40e, 40f One set cut Surface 50 Eraser 50a, 50b Set of cut surfaces 60a, 60b Set of cut surfaces 70 Eraser 71 Collective solid 80, 100, 200, 300 Solid puzzle 81 Collective solid 101, 101a, 101b, 101c, 101d, 101e, 101f, 101g Solid element 102 Puzzle main body 103a, 103b, 103c Cut surface 400 Case body 401 Closed surface 402 Opening 500 Mold 501 Recess

Claims (5)

A puzzle body having a cubic shape;
A plurality of three-dimensional pieces that form the puzzle body and are formed into a cubic shape and separable from each other;
The puzzle body is not parallel to any surface of the puzzle body, and the solid body is divided in whole or in part, and the shape is an isosceles triangle, equilateral triangle, rhombus, pentagon or regular hexagon. And at least one cut surface that is any one of
When the shape of the cut surface is an isosceles triangle, the surface of the isosceles triangle is formed by the combination of the divided solid elements,
When the shape of the cut surface is an equilateral triangle, the surface of the equilateral triangle is formed by the combination of the divided solid elements,
When the shape of the cut surface is a rhombus, a rhombus-shaped surface is formed by the combination of the divided solid elements,
When the shape of the cut surface is a pentagon, a pentagonal surface is formed by a combination of the divided solid elements,
When the shape of the cut surface is a regular hexagon, a solid puzzle having a regular hexagonal shape is formed by combining the divided solid elements .   2. The three-dimensional puzzle according to claim 1, wherein all or a part of each of the three-dimensional element pieces is colored differently, and a pattern appears on the cut surface.   3. The three-dimensional puzzle according to claim 1, further comprising a case body having a closed surface at one end and an opening at the other end, and a portion other than the opening is circumscribed by the puzzle body. .   The three-dimensional puzzle according to any one of claims 1 to 3, wherein each of the three-dimensional pieces is formed of an eraser material.   5. The three-dimensional puzzle according to claim 1, wherein the three-dimensional puzzle forms a puzzle body and forms a plurality of three-dimensional pieces that can be separated from each other.

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