JPWO2006059527A1 - Polyhedral playground equipment - Google Patents

Abstract

The present invention relates to a polyhedron play equipment that can be enjoyed with a sense of substance and that is lightweight and hardly injured. The polyhedron play equipment 1 has elasticity, and is a polyhedron in which a fitting projection 3 protrudes on at least one surface and a fitting hole 7 is formed on at least one other surface. Further, the fitting projection 3 has a constricted portion 5 having a reduced diameter between the projecting tip portion and the base surface 2, and the fitting hole 7 has an opening portion 8. Has a reduced diameter compared to the inside. When the fitting protrusion 3 is inserted into the fitting hole 7, the opening 8 is engaged with the constricted part 5, and the fitting protrusion 3 is difficult to be removed from the fitting hole 7. In addition, because it is made of an elastic body, the player will not be injured, and a structure that is slightly smaller than the actual size, or vice versa, can be constructed. You can have more interesting games with them.

Description

  The present invention relates to a polyhedron play equipment in which a fitting projection protrudes from at least one surface and a fitting hole is formed in at least one other surface, and the fitting projection is fitted and connected to the fitting hole, thereby providing a plurality of polyhedrons. The present invention relates to a playground equipment that can construct a structure having a desired three-dimensional shape like a building block by engaging playground equipment with each other.

  Conventionally, as an example of the above-described polyhedral playground equipment, an assembly block set including three block elements, a first block element, a second block element, and a third block element, is known (see Japanese Patent Application Laid-Open No. 5-277262).

  The first block element and the second block element have a cubic shape with the same dimensions, and the first block element has cylindrical projections of the same dimension formed on three surfaces thereof, and two continuous surfaces are flat surfaces. A square hole corresponding to each protrusion is formed on the remaining one surface.

  Further, the second block element has a cylindrical projection having the same dimensions as the first block element on one surface, round holes corresponding to the respective projections are formed on two surfaces, and two continuous surfaces are flat surfaces. A square hole corresponding to each protrusion is formed on the remaining one surface.

  The third block element has a hexahedron shape, and two continuous surfaces thereof are formed in a square having the same dimensions as the first and second block elements, and one of the two surfaces has the same dimensions as the projections. Are formed on the other side, square holes corresponding to the respective projections are formed on the other side, two continuous surfaces are formed in parallel with each other, and the remaining two surfaces are respectively It is formed so as to be orthogonal to two square surfaces.

  Thus, in this assembly block set, all the projections of each block element have the same dimensions, and the square holes of each block element and the round holes of the second block element respectively correspond to the projections. The block elements can be freely connected to each other by fitting the projections in the square holes or round holes of the other block elements. Thus, by connecting the three types of block elements to each other, the desired The planar shape or three-dimensional shape can be freely configured.

  In order to maintain the connected state of each block element satisfactorily, it is necessary to suppress the wear of the protrusion and the hole due to repeated attachment and detachment. Plastics are used.

JP-A-5-277262

  By the way, the polyhedron play equipment described above is conventionally provided mainly for young people such as infants, and is often assembled as a reduced model of a structure such as a ship, an automobile or a building, and the size of the assembly is in hand. Most of them were playable, and the size as a single unit was very small.

  However, for an infant as a player, an assembly using the above polyhedral playground equipment does not necessarily have a size that can be carried by hand, but rather if it is slightly smaller than the actual size or vice versa. , More realistic imagination is evoked, and playing with it becomes more interesting.

  For example, if the above-mentioned polyhedral playground equipment is used to construct a house of a size that allows a player to enter inside, a ship or a car that can be boarded, the player can construct an assembly using the playground equipment. , You can enjoy the fun and realism that you can go in and out of the assembled house or get into a ship or car.

  In this case, it is necessary for an infant who is bored to make the assembly work not bothersome so that the interest in the assembly game is not impaired. To that end, the polyhedral playground equipment needs to be made correspondingly large. However, in the case of using such a large size, if a hard plastic is used as in the prior art, the weight becomes heavy, the handling becomes inconvenient, and the corners are easily injured.

  Thus, as a means for solving such a problem, it is conceivable that the polyhedron play equipment is made of an elastic body. However, in the conventional fitting and connecting structure using the protrusion and the hole, the protrusion and the hole are elastically deformed. Therefore, the connection state becomes unstable, and therefore, the problem that the connection is easily released and it is difficult to maintain the connection state of the assembly is caused conversely.

  In addition, it is necessary to reduce the weight of the polyhedral playground equipment from the viewpoint of handling ease.

  The present invention has been made in view of the above-described conventional situation, and an object thereof is to provide a polyhedral playground equipment that can be enjoyed with a sense of substance and that is lightweight and hardly injured.

The present invention for solving the above-mentioned problems is a polyhedron having elasticity, having a fitting protrusion protruding on at least one surface, and having a fitting hole formed on at least one other surface,
The fitting protrusion and the fitting hole have shapes that can be fitted and connected to each other,
Furthermore, the fitting projection has a constricted portion with a reduced diameter between the projecting tip portion and the base surface,
The fitting hole relates to a polyhedron play equipment characterized in that an opening is reduced in diameter compared to the inside.

  In the polyhedron play equipment of the present invention having the above-described configuration, the polyhedron play tool is connected by fitting the fitting protrusion of one polyhedron play tool into the fitting hole of the other polyhedron play tool, and a plurality of polyhedrons similarly. A structure having a desired three-dimensional shape can be constructed by fitting and connecting the play equipment.

  When the fitting protrusion is inserted into the fitting hole, the large diameter portion at the tip of the fitting protrusion is elastically contracted and deformed when the fitting protrusion is inserted into the fitting hole. When the opening of the joint hole is elastically deformed (including expansion deformation), the fitting protrusion is inserted into the fitting hole.

  When the fitting protrusion is thus inserted into the fitting hole, the large-diameter portion of the fitting protrusion and the opening of the fitting hole are restored from the deformed state to the original state, and the opening of the fitting hole is restored. Is engaged with the constricted portion of the fitting protrusion. And, since the opening portion and the constricted portion are engaged in this way, the fitting protrusion is difficult to be removed from the fitting hole, and the connected state between the assembled polyhedral playground equipment is well maintained, and the polyhedral playground equipment is made of an elastic body. Even so, the three-dimensional shape of the constructed structure can be maintained well.

  In addition, since the polyhedron play equipment is made of an elastic body, even if this is made relatively large, the player will not be injured, and a structure that is slightly smaller than the actual size or vice versa will be constructed. It is possible to play more interesting games with more realistic substance.

  The polyhedron may be made of a porous body having elasticity such as a sponge. In this way, even if the size of the polyhedron play equipment is increased, its weight can be suppressed, and an infant or the like can easily handle it.

  The surface of the fitting protrusion or the fitting hole may be covered with a hard film. In this way, the fitting protrusions or fitting holes in the fitting relationship are not elastically deformed by the hard film, so that the fitting protrusions are more difficult to be removed from the fitting holes, and the three-dimensional shape of the constructed structure is reduced. It can be maintained better.

  The fitting protrusion and the fitting hole are configured such that at the time of fitting connection, at least a part of the constricted portion side outer peripheral surface of the fitting protrusion and the opening portion inner peripheral surface of the fitting hole are engaged with each other. The constricted portion side outer peripheral surface of the fitting protrusion is formed so that the outer diameter thereof continuously increases from the constricted portion side to the tip end side, while the opening portion inner peripheral surface of the fitting hole is The inner diameter is formed so as to be continuously increased from the opening side to the bottom side, and the inner diameter of the portion engaging the constricted portion side outer peripheral surface of the fitting protrusion is larger than the outer diameter of the constricted portion side outer peripheral surface. May also be formed in a small diameter.

  In this way, when the fitting protrusion is inserted into the fitting hole, the opening portion of the fitting hole has a smaller diameter than the outer peripheral surface of the fitting protrusion on the constriction portion side. The side outer peripheral surface is in contact with the opening, and the fitting protrusion is drawn into the fitting hole by the elastic force of the fitting protrusion and the fitting hole, so that the polyhedron play equipment can be fitted and connected more easily and reliably. . In addition, after the fitting projection is inserted into the fitting hole, the constricted portion side outer peripheral surface of the fitting projection and the opening portion inner peripheral surface of the fitting hole are engaged, and the fitting projection and the fitting are engaged. Since the force of pulling the fitting protrusion into the fitting hole is generated by the elastic force of the hole, the fitting protrusion can be more reliably prevented from coming out of the fitting hole, and even if many polyhedral playground equipments are assembled, This can be prevented from collapsing.

  Moreover, the constriction part of the said fitting protrusion may be formed in the root with the said base surface of this fitting protrusion. In this way, the constriction portion of the fitting protrusion is fitted in the state where the fitting protrusion is completely contained in the fitting hole, and the surface provided with the fitting protrusion is in contact with the surface provided with the fitting hole. And the opening of the fitting hole engage with each other, so that a stable fitting connection state with no rattling can be achieved.

  As described above, according to the polyhedron play equipment of the present invention, since it is made of an elastic body, even if it is correspondingly large, the player will not be injured and a structure slightly smaller than the actual size. On the other hand, large structures can be constructed, and more interesting games with more realistic realism can be performed.

  In addition, a constriction is formed between the protruding tip of the fitting protrusion and the base surface, and the opening of the fitting hole has a smaller diameter than the inside, so that the fitting protrusion becomes a fitting hole. When inserted, the opening of the fitting hole is engaged with the constricted portion of the fitting projection, which makes it difficult for the fitting projection to come out of the fitting hole, and the connection between the assembled polyhedral playground equipments Is maintained well, and the three-dimensional shape of the constructed structure can be maintained well.

  In addition, if the polyhedron play equipment is made of an elastic porous body, it can be easily handled by infants, etc. with its weight reduced, and if the surface of the fitting protrusion or fitting hole is covered with a hard film, the fitting The protrusions are less likely to come out of the fitting holes, and the three-dimensional shape of the constructed structure can be maintained better.

  Further, at the time of fitting connection, at least a part of the constricted portion side outer peripheral surface of the fitting projection and the opening portion inner peripheral surface of the fitting hole are engaged with each other, and the constricted portion side outer peripheral surface of the fitting projection is at the tip While the part side is formed to have a larger diameter, the opening side inner peripheral surface of the fitting hole is formed to have a larger diameter on the bottom side, and the constricted part side outer peripheral surface and If the inner diameter of the engaging part is formed to be smaller than the outer diameter of the outer peripheral surface of the constricted part side, when the fitting hole of the fitting protrusion is inserted, the constricted part side outer peripheral surface of the fitting protrusion and the opening part of the fitting hole By engaging the fitting projection into the fitting hole due to the engagement relationship, the polyhedral playground equipment can be connected more easily and more reliably, and after the fitting projection is received in the fitting hole, The fitting protrusion is caused by the pulling force generated by the engagement relation between the outer peripheral surface of the constricted portion of the fitting protrusion and the inner peripheral surface of the opening portion of the fitting hole. More reliably prevented from coming off the fitting hole, even by assembling many polyhedral toys, it is possible to prevent this from collapsing.

  Further, if the constriction part of the fitting protrusion is formed at the base of the fitting protrusion, the fitting protrusion completely fits in the fitting hole due to the engagement between the constriction part of the fitting protrusion and the opening part of the fitting hole. Since the surface provided with the fitting protrusion and the surface provided with the fitting hole are in contact with each other, the fitting connection state of the polyhedron play equipment can be stable without rattling. .

It is the perspective view which showed the polyhedron play equipment concerning one Embodiment of this invention. It is sectional drawing of the arrow AA direction in FIG. It is sectional drawing which showed the fitting connection state of the fitting protrusion and the fitting hole. It is a side view of the arrow B direction in FIG. It is a perspective view which shows the state which connected several of the polyhedral playground equipment which concerns on this embodiment. It is the perspective view which showed the polyhedral playground equipment which concerns on other embodiment of this invention. It is sectional drawing of the arrow CC direction in FIG. It is the perspective view which showed the polyhedral playground equipment which concerns on other embodiment of this invention. It is sectional drawing of the arrow DD direction in FIG. It is the perspective view which showed the polyhedral playground equipment which concerns on other embodiment of this invention. It is sectional drawing of the arrow EE direction in FIG. It is the perspective view which showed the polyhedral playground equipment which concerns on other embodiment of this invention. It is sectional drawing of the arrow FF direction in FIG. It is the perspective view which showed the polyhedral playground equipment which concerns on other embodiment of this invention. It is sectional drawing of the arrow GG direction in FIG.

Explanation of symbols

1 polyhedron play equipment 2 surface (base)
DESCRIPTION OF SYMBOLS 3 Fitting protrusion 4 Protruding front-end | tip part 5 Constriction part 6 Constriction part side outer peripheral surface 7 Fitting hole 8 Opening part 9 Opening part side inner peripheral surface

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a polyhedral playground equipment according to the present embodiment, and FIG. 2 is a cross-sectional view in the direction of arrows AA. 3 is a cross-sectional view showing a fitting connection state of the fitting protrusion and the fitting hole, FIG. 4 is a side view in the direction of arrow B in FIG. 1, and FIG. 5 is the present embodiment. It is a perspective view which shows the state which connected two or more of the polyhedron playground equipment concerning this.

  As shown in FIGS. 1 and 2, the polyhedron play equipment 1 of this example is made of, for example, polyurethane sponge having elasticity, the shape thereof is a cubic shape, and there are four continuous faces on each of the three faces. Spherical fitting protrusions 3 are provided so that four fitting holes 7 are formed on each of the remaining three surfaces.

  The fitting protrusion 3 is formed in a spherical shape, and a constricted portion 5 having a reduced diameter is formed at the root of the fitting protrusion 3 between the protruding tip 4 and the cube surface (base surface) 2. Is formed. The fitting hole 7 is formed in a concave spherical surface so that the fitting protrusion 3 can be fit into the fitting hole 7 and has a shape in which the opening 8 is reduced in diameter compared to the inside.

  As shown in FIG. 3, when the fitting protrusion 3 is received in the fitting hole 7, the constricted portion 5 of the fitting protrusion 3 and the opening 8 of the fitting hole 7 are engaged, and the fitting protrusion 3 is engaged. 3 on the side of the constricted portion 5 and the inner peripheral surface 9 on the side of the opening 8 of the fitting hole 7 are engaged with each other. While the outer diameter is formed so as to increase continuously (smoothly) from the constricted portion 5 side to the distal end portion 4 side, the inner peripheral surface 9 of the opening portion side of the fitting hole 7 has an inner diameter of the opening portion 8 side. The inner diameter of the portion of the fitting protrusion 3 that engages with the constricted portion side outer peripheral surface 6 is larger than the outer diameter of the constricted portion side outer peripheral surface 6. Is also formed in a small diameter.

  Further, as shown in FIG. 4, the fitting protrusions 3 and the fitting holes 7 are arranged in two rows on the surface of the cube on which the fitting projections 3 and the fitting holes 7 are provided. The distance and the distance between the columns are the same distance (2 × a), and the distance from the two close sides to the center position is the same distance (a). It is arranged to be.

  Thus, in the polyhedron play equipment 1 of the present example having the above-described configuration, the fitting protrusion 3 of one polyhedron play tool 1 is fitted into the fitting hole 7 of the other polyhedron play tool 1, so that both polyhedron play equipment 1 is connected and a plurality of polyhedral playground equipments 1 are connected and connected in the same manner, whereby a structure having a desired three-dimensional shape can be constructed.

  If the polyhedron play equipment 1 is appropriately sized, for example, it is possible to construct a house of a size that allows a player to enter the inside, a ship or a car that can be boarded.

  FIG. 5 shows a state where three polyhedral playground equipments 1 are connected as an example of a connected state although the number of connections is small.

  By the way, the fitting projection 3 is inserted into the fitting hole 7 since the fitting of the fitting projection 3 and the fitting hole 7 is made of urethane sponge having elasticity. At this time, the large-diameter portion at the tip of the constricted portion 5 of the fitting projection 3 is elastically deformed and deformed, and the opening 8 of the fitting hole 7 is elastically deformed (including expansion deformation), thereby fitting. The protrusion 3 is inserted into the fitting hole 7.

  When the fitting protrusion 3 is inserted into the fitting hole 7 in this way, the large diameter portion of the fitting protrusion 3 and the opening 8 of the fitting hole 7 are restored from the deformed state to the original state, and the fitting protrusion 3 is fitted. The mating protrusion 3 is completely accommodated in the fitting hole 7, and the surface on which the fitting protrusion 3 is provided and the surface on which the fitting hole 7 is provided come into contact with the opening 8 of the fitting hole 7. The constricted portion 5 of the protrusion 3 is in a state where the constricted portion-side outer peripheral surface 6 of the fitting protrusion 3 and the opening-side inner peripheral surface 9 of the fitting hole 7 are engaged.

  The opening 8 and the constricted portion 5 are thus engaged with the constricted portion side outer peripheral surface 6 and the opening portion inner peripheral surface 9, so that the fitting projection 3 comes out of the fitting hole 7. In addition to being prevented, a stable fitting connection state without rattling is ensured, and the connection state between the assembled polyhedron play equipment 1 is well maintained, and the polyhedron play equipment 1 is made of an elastic body as in this example Even so, the three-dimensional shape of the constructed structure can be maintained well.

  Further, when the fitting protrusion 3 is inserted into the fitting hole 7, the opening 8 of the fitting hole 7 has a smaller diameter than the constricted portion side outer peripheral surface 6 of the fitting protrusion 3. When the constricted portion side outer peripheral surface 6 of the protrusion 3 contacts the opening 8 of the fitting hole 7, the fitting protrusion 3 is pulled into the fitting hole 7 by the elastic force of the fitting protrusion 3 and the fitting hole 7. As a result, the polyhedron play equipment 1 can be more easily and reliably fitted and connected.

  Further, after the fitting protrusion 3 is inserted into the fitting hole 7, the constricted portion side outer peripheral surface 6 of the fitting protrusion 3 and the opening portion inner peripheral surface 9 of the fitting hole 7 are engaged, Since the force of pulling the fitting protrusion 3 into the fitting hole 7 is generated by the elastic force of the fitting protrusion 3 and the fitting hole 7, the fitting protrusion 3 is more reliably prevented from coming out of the fitting hole 7. It is possible to prevent the inconvenience that it collapses by assembling many polyhedral playground equipments 1.

  In addition, since the polyhedron play equipment 1 is made of a urethane sponge having elasticity, even if it is made correspondingly large, it can be easily handled by an infant and the like, and the player will not be injured. As mentioned above, it is possible to build a structure that is slightly smaller than the actual size, such as a house that allows players to enter inside, ships and cars that can be boarded, and vice versa, This makes it possible to play more interesting games with more realistic reality.

  As mentioned above, although embodiment of this invention was described, the specific aspect which this invention can take is not limited to this at all.

  For example, in the above example, the surface of the fitting protrusion 3 or the fitting hole 7 may be covered with a hard film such as a resin. In this way, the fitting protrusion 3 or the fitting hole 7 in the fitting relationship is not elastically deformed by the hard film, so that the fitting protrusion 3 is more easily removed from the fitting hole 7 than in the above example. It becomes difficult, and the three-dimensional shape of the constructed structure can be maintained better.

  In the above example, the urethane sponge is used. However, the present invention is not limited to this, and the sponge is not limited to other materials, and is not limited to the sponge. The rubber material may be used.

  Further, the basic shape of the play equipment 1 is not limited to the cube of the above example, and may be any shape such as a pyramid as long as it is a polyhedron, and the surface, number, and position of the fitting protrusion 3 and the fitting hole 7 are also provided. It is not limited to the above example.

  Further, the shape of the fitting protrusion 3 and the fitting hole 7 is not limited to the spherical shape of the above example, and is a shape that can be fitted and connected to each other, and the fitting protrusion 3 is between the protruding tip and the base surface. As long as the constricted portion 5 has a reduced diameter and the opening 8 of the fitting hole 7 has a reduced diameter as compared with the inside, any shape may be used. For example, FIG. 6 to FIG. Each shape shown in FIG.

  6 and 7, both the fitting protrusion 3a and the fitting hole 7a have an elliptical cross section, and a constricted portion 5a is formed at the root of the fitting protrusion 3a, and the fitting hole 7a is formed. The opening 8a has a reduced diameter compared to the inside. When the fitting protrusion 3a is accommodated in the fitting hole 7a, the constricted portion 5a of the fitting protrusion 3a and the opening 8a of the fitting hole 7a are connected to the outer peripheral surface 6a on the constricted portion 5a side of the fitting protrusion 3a. The inner peripheral surface 9a on the opening 8a side of the fitting hole 7a is engaged, and the outer peripheral surface 6a of the constricted portion 3a of the fitting projection 3a has an outer diameter from the constricted portion 5a side to the tip end side. On the other hand, the inner peripheral surface 9a on the opening side of the fitting hole 7a is formed so that its inner diameter increases from the opening 8a side to the bottom side, and the fitting protrusion 3a is constricted. The inner diameter of the portion engaged with the portion-side outer peripheral surface 6a is formed smaller than the outer diameter of the constricted portion-side outer peripheral surface 6a.

  8 and 9, the fitting projection 3b and the fitting hole 7b are both in the shape of a truncated cone, and a constricted portion 5b is formed at the base of the fitting projection 3b, and the fitting hole The opening 8b of 7b is reduced in diameter compared with the inside. Further, when the fitting projection 3b is received in the fitting hole 7b, the constricted portion 5b of the fitting projection 3b and the opening 8b of the fitting hole 7b are connected to the outer peripheral surface 6b of the fitting projection 3b and the fitting hole 7b. The outer peripheral surface 6b of the fitting protrusion 3b is formed so that its outer diameter increases from the constricted portion 5b side to the tip end side, while the fitting hole 3b is engaged with the inner peripheral surface 9b. The inner peripheral surface 9b of 7b is formed so that its inner diameter increases from the opening 8b side to the bottom side, and the inner diameter of the portion that engages with the outer peripheral surface 6b of the fitting projection 3b is outside the outer peripheral surface 6b. The diameter is smaller than the diameter.

  10 and 11, the fitting projection 3c and the fitting hole 7c are both spherical, and a constricted portion 5c having a straight portion is formed at the base of the fitting projection 3c. The opening 8c of the joint hole 7c has a cylindrical surface and is reduced in diameter compared to the inside. When the fitting protrusion 3c is accommodated in the fitting hole 7c, the constricted portion 5c of the fitting protrusion 3c and the opening 8c of the fitting hole 7c are connected to the outer peripheral surface 6c on the constricted portion 5c side of the fitting protrusion 3c. The inner peripheral surface 9c on the opening 8c side of the fitting hole 7c is engaged, and the outer peripheral surface 6c of the constricted portion side of the fitting projection 3c has an outer diameter from the constricted portion 5c side to the distal end side. On the other hand, the inner peripheral surface 9c on the opening side of the fitting hole 7c is formed so that its inner diameter increases from the opening 8c side to the bottom side, and the fitting protrusion 3c is constricted. The inner diameter of the portion that engages with the portion-side outer peripheral surface 6c is formed smaller than the outer diameter of the constricted portion-side outer peripheral surface 6c.

  12 and 13, both the fitting protrusion 3d and the fitting hole 7d form a truncated cone shape, and an annular groove-shaped constricted portion 5d is formed at the root of the fitting protrusion 3d. The opening 8d of the fitting hole 7d has a cylindrical surface and is reduced in diameter compared to the inside. When the fitting protrusion 3d is received in the fitting hole 7d, the constricted portion 5d of the fitting protrusion 3d and the opening 8d of the fitting hole 7d are arranged on the outer peripheral surface of the fitting protrusion 3d excluding the constricted portion 5d. 6d and the inner peripheral surface 9d of the fitting hole 7d excluding the opening 8d are engaged, and the outer peripheral surface 6d of the fitting projection 3d has an outer diameter from the side of the constricted portion 5d to the tip portion. On the other hand, the inner peripheral surface 9d of the fitting hole 7d is formed so that its inner diameter increases from the opening 8d side to the bottom side, and the outer peripheral surface 6d of the fitting projection 3d. The inner diameter of the portion engaged with the outer peripheral surface 6d is formed smaller than the outer diameter of the outer peripheral surface 6d.

  In the above example, four fitting projections 3 or fitting holes 7 are formed on each surface, but the number of the fitting projections 3 and the fitting holes 7 is not particularly limited. For example, as shown in FIG. 14 and FIG. 15, one spherical fitting protrusion 3 is formed at the center position for three continuous surfaces among all six surfaces, and the remaining three surfaces are One spherical fitting hole 7 may be formed at the center position.

As described above in detail, the present invention is suitable as a polyhedron play equipment capable of constructing a structure slightly smaller than the actual size or a structure larger than the actual size by fitting and connecting to each other.

Claims (5)

It is a polyhedron having elasticity, with a fitting projection protruding on at least one surface, and a fitting hole formed on at least one other surface,
The fitting protrusion and the fitting hole have shapes that can be fitted and connected to each other,
Furthermore, the fitting projection has a constricted portion with a reduced diameter between the projecting tip portion and the base surface,
The polyhedron play equipment, wherein the fitting hole has an opening whose diameter is reduced compared to the inside.   The polyhedron play equipment according to claim 1, wherein the polyhedron is made of a porous body having elasticity.   The polyhedral playground equipment according to claim 1 or 2, wherein a surface of the fitting protrusion or the fitting hole is covered with a hard film. The fitting protrusion and the fitting hole are configured such that at the time of fitting connection, at least a part of the constricted portion side outer peripheral surface of the fitting protrusion and the opening portion inner peripheral surface of the fitting hole are engaged with each other;
The outer peripheral surface of the fitting projection on the constricted portion side is formed such that its outer diameter continuously increases from the constricted portion side to the tip end side, while the opening portion inner peripheral surface of the fitting hole is The inner diameter is formed so as to continuously increase from the opening side to the bottom side, and the inner diameter of the portion engaging the constricted portion side outer peripheral surface of the fitting protrusion is larger than the outer diameter of the constricted portion side outer peripheral surface. The polyhedral playground equipment according to any one of claims 1 to 3, wherein the playground equipment has a small diameter. The polyhedron play equipment according to any one of claims 1 to 4, wherein the constricted portion of the fitting protrusion is formed at a root of the fitting protrusion with the base surface.

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