JP3479912B2 - Deployable dice - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die (dice) used in a board game, a method for manufacturing the die, and a die used for manufacturing the die.

[0002]

2. Description of the Related Art Various board games such as shogi, go, domino games and Othello games have been enjoyed since ancient times. Also, in this kind of board game, like Sugoroku,
There are many games in which the dice are rolled, that is, the results of the dice are reflected in subsequent games. In any board game using these dice, the outcome of the rolled dice greatly influences the outcome of the win or loss.

On the other hand, recently, in a cartoon depicting the world of fantastic games, there is Dragon Dice Monsters (hereinafter D
A fancy board game called DM)
There is a description of playing between characters in a manga. The DDM uses multiple dice with different marks from the usual dice, and not only provides the effect and result according to the result of the rolled dice, but also allows the player to dice the dice on the board in two dimensions. It is also considered to be open. In the case of the DDM, by opening the dice two-dimensionally, the route or the position according to the two-dimensional polygonal shape of the opened dice is determined. That is,
In DDM, not only the results are used, but also the route,
Uses dice to determine bases. Furthermore,
Since it is a fantasy cartoon world, it is imaginatively drawn in the manga so that a monster corresponding to the dice will appear on the board in the opened dice.

[0004]

However, there are many difficulties in realizing a fancy board game drawn on a manga as an actual board game. For example, when the above-mentioned DDM is played by an actual player, a dice that can be two-dimensionally developed, that is, opened and closed by the player is required. Conventionally, a dice that can be developed or opened and closed has been proposed. There is no such example, and it is not possible to infer from the manga what kind of configuration should be adopted to achieve it. In addition, the material of the expandable die, the die structure required for expansion, and the like cannot be estimated. Furthermore, if you put monsters etc. in the dice that can be expanded, the size of the dice will become too large, and the monster placed in the dice will shift the center of gravity of the dice, resulting in a higher probability of being rolled. There are problems such as changes, which is not realistic.

An object of the present invention is to realize a fancy board game using dice that can be developed as an actual board game like DDM.

Another object of the present invention is to realize a die that can be two-dimensionally developed into a polygonal shape by a player.

Still another object of the present invention is to provide a method of manufacturing a die which can be two-dimensionally developed and a mold used for the manufacturing.

[0008]

According to one aspect of the present invention, there is provided a die which is composed of a polyhedron having a plurality of surfaces having the same shape and which can be developed into a continuous polygonal area on a plane. When the polyhedron is configured, it has an outer surface located on the outer side and an inner surface located on the inner side, and the boundary of the polygonal area on the inner surface side has a boundary area having a predetermined inclination angle, In the expanded polygonal area, a developable die is obtained which has an engaging portion of a size that does not exceed each boundary area in a boundary area of a predetermined surface.

According to another aspect of the present invention, there is provided a method of manufacturing a die which is composed of a polyhedron having a plurality of surfaces having the same shape and which can be developed into a continuous polygonal area on a plane. It has the expanded multi-sided shape, and has a part corresponding to the multi-sided having a predetermined interval in the thickness direction and a part corresponding to a boundary between the multi-sided having a narrower interval than the predetermined interval. A method for producing a developable die is characterized in that a die is prepared and a predetermined resin is injected into the die to be molded to obtain the die.

Further, according to another aspect of the present invention, in order to manufacture a die which is composed of a polyhedron having a plurality of surfaces having the same shape, and which can be developed into a continuous polygonal area on a plane. Corresponding to a boundary between the portion having the expanded multi-sided shape and having the predetermined spacing in the thickness direction and corresponding to the multi-sided surface having a spacing narrower than the predetermined spacing. A mold for producing a deployable die is obtained which is characterized in that

According to another aspect of the present invention, in a die having a plurality of surfaces which can be developed in a plane in a continuous polygonal area and which can be assembled three-dimensionally,
So that you can assemble three-dimensionally leaving a gap,
A die is obtained in which at least one predetermined surface of the two surfaces located at the position sandwiching the gap has a smaller surface than the other surfaces.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, there is shown a perspective view showing the appearance of a cube-shaped die according to the present invention. The mark different from the die is displayed. Each of these marks has an important meaning in the game, but since the present invention is not directly related to these marks, the description thereof is omitted here.

In the die shown in FIG. 1, the surface facing upward is pulled upward so that the surface shown in FIG.
It can be developed on a two-dimensional polygonal surface as shown in (b) and (c). Specifically, the die shown in FIG. 1 has six square faces (hereinafter,
(Referred to as first to sixth surfaces), and an engaging portion is provided at a boundary portion located around a predetermined surface. Further, the illustrated die is formed by injecting and molding polypropylene resin into a mold. Although polypropylene resin is used in this example, other resins may be used. Here, the actual die has dimensions of 22.88 mm in the vertical and horizontal directions, and further, the first to sixth surfaces 11 to 1 having a thickness of 3 mm.
It is formed by 6.

FIG. 2A shows an inner surface of a die according to an embodiment of the present invention when the die is two-dimensionally developed. As shown in FIG. When assembled, the surface is located inside the die and is not visible from the outside. FIG. 2B is a view showing a side surface of one surface of the expanded die, and FIG.
Is an outer surface that is located outside the die when the die is assembled and has the mark shown in FIG. 1 on each side. It should be noted that FIG. 2 shows only an example of a polygonal shape that can be expanded from the die of FIG. 1, and it may be configured so that it can be expanded to other polygonal shapes.

The die according to the present invention will be described in more detail with reference to FIG. As shown in FIG. 2A, the inner surface of the die corresponds to the first to sixth surfaces 11 to 16 and has square first to sixth inner surfaces 11i to 16i.
Is formed by. In the illustrated example, the first to fourth inner surfaces 11i to 14i are linearly connected, and the second, fifth, and sixth inner surfaces 12i, 15 are connected.
i and 16i are also linearly connected. As is clear from this, it can be understood that the die of the present invention can develop six surfaces into a region having a continuous polygonal shape without separating the individual surfaces individually. As is clear from the figure, each of the inner surfaces 11i to 16i has a flat square central region Rc and a boundary region R surrounding the central region Rc.
b.

In this example, the boundary regions Rb of the inner surfaces 11i to 16i each have a width of 2 mm and an inclination angle of about 45 degrees. On the other hand, each inner surface 11
The central region of i to 16i has an area of 18 mm × 18 mm and a thickness of 3 mm. A predetermined design is printed, or a printed sticker or the like is attached to the central region.

Here, also referring to FIG. 3, the sixth and second surfaces 16 and 12 formed continuously will be described as an example.
Border region Rb between adjacent surfaces and bridge portion Br
Will be explained. As shown in the drawing, a boundary region Rb having an inclined portion of about 45 degrees is formed on the sixth and second inner surfaces 16i, 12i side of the sixth and second surfaces 16, 12. The inclined portion is provided over 2 mm in the thickness direction. Both surfaces 16 and 12 are connected by a very thin thin film bridge portion Br provided at the end of the inclined portion. Here, the bridge portion Br shown in FIG.
While it has a width of 6 mm, it has a thickness of about 0.2 mm. As described above, since the bridge portion Br that connects the adjacent surfaces is thinner than the thickness of the adjacent both surfaces, as shown in FIG. 3, between the outer surfaces 16o and 12o of the both surfaces,
A groove extending linearly is formed.

Therefore, both surfaces 16 and 12 can be bent inward with the groove portion as a boundary.
Further, since the inclination angle of the adjacent boundary regions Rb is approximately 45 degrees, it is possible to prevent the adjacent surfaces 16 and 12 from being bent by 90 degrees or more when they are bent inward.

With reference to FIGS. 2A and 2B, the structure of the engaging portion for maintaining the shape of the die when the die shown in FIG. 1 is assembled will be described. Figure 2
In the boundary region Rb of the first inner surface 11i shown in (a), a part where the pair of recesses 21a, 21b does not exceed the boundary region Rb in the portion connected to the sixth and second inner surfaces 16i, 12i. Is formed within.

On the other hand, a sixth inner surface 11i connected to the sixth
In the boundary region Rb of the inner surface 16i of the convex portion 2 engaging with the concave portion 21b formed in the boundary region Rb of the first inner surface 11i.
6b is provided, and the boundary region Rb of the fifth inner surface 15i also includes the boundary region Rb of the first inner surface 11i.
A convex portion 25a that engages with the concave portion 21a is provided.

Incidentally, each convex portion provided in the boundary region Rb is
It is desirable that it is formed so as not to project upward from the inner surface. This is because in the above-mentioned DDM, the dice developed on the plane are used as the base, so if there is something that protrudes upward from the inner surface, the character placed on the inner surface becomes unstable, or when the character moves. This is to prevent the character from being caught and the position of the dice being displaced.

In the example shown in FIG. 2, during die assembly,
In the boundary region Rb provided on the fourth inner surface 14i that contacts the fifth and sixth inner surfaces 15i, 16i, the convex portions 2 are respectively formed.
4a, 24b are formed and these fourth inner surface 14
Corresponding to the convex portions 24a and 24b of i, the concave portions 25b and 2 are formed in the boundary region Rb of the fifth and sixth inner surfaces 15i and 16i.
6a are provided respectively.

As shown in the drawing, the boundary region Rb of four surfaces out of the six surfaces forming the cube-shaped die.
By providing the engaging portion formed by the concave portion and the convex portion, it is possible to construct a die which can be quickly assembled and can be easily developed on a two-dimensional plane. It is also conceivable to provide the engagement part in the boundary area of the five inner surfaces.

Referring to FIG. 2C, the outer surfaces 11o and 16o of the first to sixth surfaces are connected to each other by a bridge portion Br. ) Each side can be bent to the back side.
Therefore, each bridge portion Br may be called a bent portion.

In FIG. 2 (a), only the case where the engaging portion is formed by combining only one concave portion and one convex portion provided on one side of each inner surface has been described. Also, by disposing a plurality of convex portions spaced apart from each other and providing a convex portion that is sandwiched between the plurality of convex portions on the other side, in the same manner as in FIG. 2A. , The dies can be assembled. Also in this case, the protrusions on each side should be sized so as not to project from the boundary region Rb of each inner surface to form a surface having a polygonal shape that is flat when expanded and has no protrusions. and,
When combined, it is necessary to form a solid die.

Next, a method of manufacturing the die according to the present invention will be described with reference to the schematic configuration diagram of the mold shown in FIG. As shown in FIG. 4, the mold used in the present invention is composed of a lower mold 31 and an upper mold 32.
Has a raised portion 33 at a portion corresponding to the bridge portion Br. On the other hand, the upper die 32 has a boundary region Rb of each inner surface.
And the inclined portion 3 corresponding to the portion
4 and a gate portion 35 continuing from 4. As is clear from the figure, the gate portion 35 of the upper die 32 faces the raised portion 33 of the lower die 32, and thus the bridge portion Br between the surfaces can be formed. still,
Since the size of the mold is substantially the same as the die described with reference to FIG. 2 and the engaging portion is also substantially the same, the description thereof is omitted here.

As shown, the expanded die is
The thickness of the bridge portion Br is much smaller than that of the first to sixth surfaces 11 to 16. Therefore, if the resin such as polypropylene is injected from one place, the first to sixth surfaces and the bridge portion Br having a uniform thickness may not be formed. In consideration of this, in the mold according to the present invention, the resin is injected into the mold from a plurality of inclined portions close to the bridge portion Br, whereby the gate portion for forming the very thin bridge portion Br is also The resin is fully filled. The method of injecting the resin to mold the die may be either injection molding or extrusion molding.

The mold shown in FIG. 2 is filled with resin and, after a predetermined time has elapsed, the mold is opened to obtain a die having the shape shown in FIG.

A die according to another embodiment of the present invention will be described with reference to FIG. Also in FIG. 5, FIG. 1 and FIG.
Surfaces corresponding to and are indicated by the same reference numerals, and the die shown in FIG. 5 is also developed into a two-dimensional shape similar to that of FIG. The illustrated die has a structure that can be developed into a two-dimensional shape with one touch. For this reason, the illustrated die has the first and second wall surfaces 4
It has the 4th surface 14 comprised by 1, 42. Of these, the first wall surface 41 located inside the die
Above the button 43 protruding through the second wall 42.
By pressing the button 43, the first wall surface 41 can be pressed downward.

Of the side surfaces of the first wall surface 41, the first surface 11, the fifth surface 15, and the sixth surface 16 are also included.
Recesses 44a, 44b, and 44c (44c is not shown) are provided in the portions facing each other. On the other hand, the first surface 11, the fifth surface 15, and the sixth surface 16
Facing the recesses 44a, 44b, and 44c,
Convex parts 45a, 45b, and 45c are provided.
In addition, between the fourth surface 14 and the third surface 13, the fifth surface 1
5 and the second surface 12, the second surface 12 and the third surface 13
And the connection between the first surface 11 and the sixth surface 16 have a hinge structure that opens outward in the drawing around the axis.

When the structure shown is used, the recesses 44a, 44 of the fourth surface 14 are in the assembled state of the die.
b and 44c, the convex portions 45a, 45b, and 45c of the first surface 11, the fifth surface 15, and the sixth surface 16 are provided.
Are in a fitted state.

In this state, the button 43 on the fourth surface 14
Is pressed downward in the figure, the recesses 44a, 44b, 4
4c and the convex portions 45a, 45b, and 45c are out of the fitted state, and the first surface 11, the fifth surface 15, and the sixth surface 16 are in the front, left, and right directions in the drawing, respectively. And is expanded into a two-dimensional shape similar to that shown in FIG.

With this structure, by simply pressing the button 43,
There is an advantage that a cube die can be developed on a two-dimensional plane.

Although the above description has been made only for the case of developing into the two-dimensional shape shown in FIG. 2, it is not limited to the two-dimensional shape shown in FIG.
You may comprise so that it may develop like (b), (c), (d), and (e). With any of the polygonal patterns shown in FIG. 6, a cubic die can be assembled in the same manner as in the case of FIG.

A die according to another embodiment of the present invention will be described with reference to FIGS. 7 and 8. The die shown in FIG. 7 differs from the die shown in FIG. 1 in that a gap 50 is provided between the fourth surface 14 and the first surface 11. The die of FIG. 7 has an advantage that it can be developed more easily than the die of FIG. 1 by inserting a fingertip (nail) into the gap 50.

Referring also to the exploded view shown in FIG. 8, the die shown in FIG. 7 has a first inner surface 1 when assembled.
1i and the fourth inner surface 14i are adjacent to each other, and
As is clear from FIG. 7, in the case of this embodiment, the first
A gap 50 remains between the surface 11 and the fourth surface 14. In other words, when assembled three-dimensionally, in this example, the first surface 11 and the fourth surface are adjacent to each other with the gap 50 interposed therebetween.

The above-mentioned gap 50 is formed in the first and fourth surfaces 1.
As shown in FIG. 8, in order to leave the space between the first and second inner surfaces 11i, the width of the boundary area Rb1 adjacent to the fourth inner surface 14i is set to the other boundary area Rb.
It is narrower than b. Therefore, the first inner surface 11i of the die shown in the figure has an accurate square shape because the width of the boundary region Rb1 at the inclined portion is smaller than the width of the first inner surface 11i at the inclined portion. Absent.
That is, the illustrated first inner surface 11i is formed to have a slightly smaller size than the other five inner surfaces. In practice, the width of the boundary area of the first inner surface 11i is set to be half the width of the other boundary areas or less, that is, 1 mm or less.

Further, in order to strengthen the engaged state of the die, the die of FIG. 8 is provided with more protrusions and recesses than the die of FIG. In the case of the illustrated example, the two convex portions 23p are formed in the boundary region Rb of the third inner surface 13i.
1 and 23p2 are provided, and the recesses 2 are formed on the fifth and sixth inner surfaces 15i and 16i, respectively.
5g1 and 26g2 are provided. Similarly, in the boundary region of the fourth inner surface 14i, the two recesses 24g1 and 24g are formed.
2 are provided, and the convex portions 25p1 and 26p1 which are connected to the concave portions 24g1 and 24g2 are the fifth and sixth inner surfaces 1.
It is provided in the boundary region Rb between 5i and 16i. Furthermore,
In the boundary region Rb of the first inner surface 11i, the two convex portions 21
p1 and 21p2 are added, and these convex portions 21p
Corresponding to 1, 21p2, the fifth and sixth inner surfaces 15i,
Recesses 25g2 and 26g2 are provided in the boundary region Rb of 16i.

Here, in the die shown in FIG. 2, 5 sets of engaging portions formed by the combination of the convex portion and the concave portion are provided.
The die shown in FIG. 8 has 10 sets.

In the above example, only a die having 5 and 10 sets of engaging portions has been described, but the number of engaging portions may be 4 or more. For example, 6 sets, 8 sets, 1
A die provided with two sets of engaging portions is also easily conceivable.

Referring to FIG. 9, there is shown an external view of a die according to still another embodiment of the present invention. As is clear from the figure, the die according to this embodiment has a regular tetrahedron shape constituted by regular triangular surfaces.

Referring to FIG. 10, the positive 4 shown in FIG.
The inner surface is shown when the die of the face piece is developed in a two-dimensional plane. Each side of the regular tetrahedron die is
It is formed by a central region and a boundary region, and the boundary region is provided with an inclined portion having an angle (here, 30 degrees) necessary to form a regular tetrahedron. Figure 10
In the example, the two-dimensional shape is developed to form a parallelogram. As the engaging mechanism necessary for assembling a die that can be developed as shown in FIG. 10 into a regular tetrahedron die, a mechanism similar to the mechanism shown in FIG. 2 or 5 can be used.

Referring to FIG. 11, the positive 4 shown in FIG.
The case where the die of the face piece is expanded to another two-dimensional shape different from the shape of FIG. 10 is shown. Also in this example, a regular tetrahedral die can be assembled in the same manner as in FIG.

[0044]

As described above, according to the present invention,
A die having a three-dimensional shape and capable of being selectively two-dimensionally developed can be obtained. By using such dice, it is possible to bring a wide variety of variations to the board game using the dice, and it is possible to increase the user's interest in the board game.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a die according to an embodiment of the present invention.

2 (a), (b), and (c) are inner surfaces for explaining a case where the die shown in FIG. 1 is expanded,
It is a side surface and an outer surface view.

FIG. 3 is a partial cross-sectional view for explaining the expanded die shown in FIG. 2 in more detail.

FIG. 4 is a view for explaining a mold used when manufacturing a die according to the present invention.

FIG. 5 is a schematic configuration diagram for explaining a die according to another embodiment of the present invention.

6 (a), (b), (c), (d), (e),
(F) is a figure for demonstrating the die expanded to the two-dimensional shape different from the example shown in FIG.

FIG. 7 is a perspective view illustrating a die according to another embodiment of the present invention.

8 (a), (b), and (c) are views showing an inner surface, a side surface, and an outer surface, respectively, for explaining a case where the die shown in FIG. 7 is developed.

FIG. 9 is a perspective view illustrating a die according to still another embodiment of the present invention.

FIG. 10 is a diagram showing an example of development of the dice shown in FIG.

FIG. 11 is a diagram showing another example of development of the die shown in FIG.

[Explanation of symbols]

11 to 16
First to sixth surfaces 11i to 16i
First to sixth inner surfaces 11o to 16o
First to sixth outer surfaces Rc
Central region Rb
Border regions 21a, 21b, 24a, 24b, 25a, 25b, 2
6a, 26b Engaging portion Br
Bridge part

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-143034 (JP, A) JP-A-7-112734 (JP, A) JP-A-7-315376 (JP, A) Yu-Gi-Oh Vol. 16, Japan, Shueisha Co., Ltd., December 27, 1999, 1st printing, pp. 95-97 (58) Fields investigated (Int.Cl. ⁷ , DB name) A63F 9/00-9/30 A63F 1 / 00-37/00

Claims (9)

(57) [Claims] 1. A die which is composed of a polyhedron having a plurality of surfaces having the same shape as each other and which can be developed into a continuous polygonal area on a plane, and when the polyhedron is composed, it is located outside. and an outer surface which, Rutotomoni includes an inner surface located inside a border area having a predetermined angle of inclination provided on the boundary of the polygonal shape region of the inner surface, of the polygonal area in which the deployed, pre The bridging area that connects the polygonal areas that are continuous to each other and the engaging portion that is formed in the boundary area of the defined surface and that does not exceed the boundary areas.
The bridge portion is linear on the outer surface of two adjacent surfaces.
Expandable dice characterized by forming grooves . 2. The die according to claim 1, wherein the polyhedron is a regular polyhedron. 3. The die according to claim 2, wherein the regular polyhedron is a cube. 4. The die according to claim 2, wherein the regular polyhedron is a regular tetrahedron. 5. The die according to claim 3, wherein the engaging portion is formed on four surfaces out of six surfaces of the cube. 6. The engagement part according to claim 5, wherein the engagement part is composed of a concave part provided in one boundary region and a convex part provided in the other region fitted into the one boundary region. Dice characterized by being present. 7. The die according to claim 1, wherein the polygonal regions developed on the two-dimensional plane are connected by a bridge portion thinner than the boundary region. 8. The die according to claim 3, wherein the predetermined inclination angle is about 45 degrees. 9. The die according to claim 1, wherein the width of at least one boundary region is narrower than the width of another boundary region.