JPH0222487Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a joint for various polyhedral structures that can be infinitely proliferated by connecting and connecting bones of the same size in several lengths.

"Conventional technology" Conventionally, for example, skeletal structure shelves, book stands, storage cases, etc.
When assembling a tent, etc., use I-type, L-type, or
T-shaped, Y-shaped, X-shaped, and various other shapes of joints were used.

``Problems to be solved by the invention'' However, in the case of the above-mentioned conventional technology, the number of parts of the skeletal structure is extremely large, and if even one type of joint is missing, it becomes impossible to assemble.
There were some flaws that made it difficult to handle.

``Means for Solving the Problems'' However, the present invention is a polyhedral structure in which a plurality of arms for connecting the bones serving as the sides of the polyhedron are integrally formed in a radial manner around the outer periphery of an annular joint body formed of an elastic material. In the joint, a plurality of sets of recesses are formed on the inner peripheral surface of the joint main body, and a set of recesses that engage with the recesses are formed on the outer peripheral surface of the joint main body, and another joint main body is formed on the inner peripheral surface of the joint main body. It is constructed so that it can be freely combined into a cross shape.

"Function" According to the present invention, by forming the joint with an elastic material that has the strength to support the entire structure to be constructed, for example, when the angle of the bones differs depending on the type of polyhedron, Even if the distance between the vertices or between the vertices and the center differs slightly, the elasticity of the joint itself allows the angle of each arm to change freely to some extent, and the ring part twists in a spiral, dispersing and absorbing the strain that occurs in various places. . Furthermore, even if a large number of bones are concentrated at one point, by combining two joints and doubling the number of arms, this can be handled without preparing a special joint with a large number of arms.
As a result, all of the various polyhedra can be constructed using one type of joint, and the joints can connect the same polyhedra or connect different polyhedra.

"Embodiment" An embodiment of the present invention will be described below in detail based on the drawings.

As shown in FIGS. 1 and 2, the joint A of the present invention has a ring part 1, which is the joint main body, in the center, and six arms 2a, 2b, 2c, 2d, 2e, and 2f are integrally formed radially. Each of the arms 2a to 2f protrudes outward from the outer peripheral surface of the ring portion 1 at approximately 60 degree intervals with respect to the center of the ring portion 1, and
c, 2e and the arms 2b, 2d, 2f adjacent thereto are turned upside down at a certain angle θ. Further, spherical bulges 3a, 3b, 3 are provided at the tips of each of the arms 2a to 2f.
Form c, 3d, 3e, and 3f. On the other hand, the arm 2
Arc-shaped first recesses 4, 4 are formed facing each other on the inner peripheral surface of the ring part 1 inside a, 2d, and second recesses 5, 5 of the same shape are formed on both sides of the first recesses 4, 4. and the third recesses 6, 6 are formed to face each other,
Further, on the outer peripheral surface of the ring portion 1, the arms 2b, 2
The first recess 4 is located between c and 2e and 2f.
Fourth recesses 7, 7 having the same shape as 4 are formed to face each other. By the way, the joint A is for each arm 2a to 2f.
It is made of an elastic material (such as hard rubber) which allows the angle of the ring part 1 to change to some extent and the shape of the ring part 1, and which has the strength to support the entire structure to be constructed.

As shown in Figs. 3 to 5, the same joints A and A' are provided, and the ring part 1' of the other joint A' is fitted into the ring part 1 of one joint A. In the fourth recesses 7, 7,
The first recesses 4', 4', the second recesses 5', 5', and the third recesses 6', 6' of the ring part 1' are engaged to unite the two joints A, A' in a substantially cross shape. Configure it as follows.

As shown in FIG. 6, the bones B, which form the sides of various polyhedrons, have at least both ends shaped like pipes, and the bulges 3 of the joints A are formed on the inner circumferential surfaces of both ends.
A spherical groove 8 and a notch 8a are formed for fitting and connecting a to 3f. By the way, the bone B is standardized in several lengths.

Using the above joint A alone or a combined joint C made by combining two joints, multiple bones B...
Various polyhedra are constructed by connecting and connecting them.

As shown in FIGS. 7 and 8, for example, a tetradecahedron 9
When constructing a bone B... of the same length on each side, and the above-mentioned joining joint C... at each vertex, the 12 arms 2a to 2f and 2 of the joining joint C are arranged.
Select the arm that most corresponds to each bone B from among a' and 2f', fit the bulge of the selected arm into the spherical groove 8 through the notch 8a of the corresponding bone B, and The bones B... are connected to construct a tetradecahedron 9 of the skeletal structure. Note that the tetradecahedron 9 can be reinforced by connecting the bones B between the joining joint C disposed in the center of the tetradecahedron 9 and the joining joint C on the outside.

In addition, as shown in FIGS. 9 and 10, a regular icosahedron 10 is constructed in the same manner as the above-mentioned 14-sided icosahedron 9, and new bones B... and merging joints C... By multiplying the regular tetrahedrons 11..., a 60-hedron can be constructed. Furthermore, the regular icosahedron 1
0, it is also possible to construct a regular octahedron 12 by separately using bones B... and combined joints C..., and a pair of male and female rotating joints 13 are provided, and this rotating joint 13 is Parallel pipe parts 14, 14 are formed on both sides, and a pin 16 at the tip of a connecting rod 15 that projects vertically from the middle of one pipe part 14 is connected to a boss part 17 that projects vertically from the middle of the other pipe part 14. The rotary joint 13a on the male side and the rotary joint 13b on the female side are separated and integrally connected to each other so as to be rotatable coaxially, and bone B of the outer icosahedron 10 and the inner octahedron The rotation joint 1 is connected to the bone B of 12 through the pipe portions 14, 14.
3, the octahedron 12 can be rotatably supported inside the icosahedron 10.

Furthermore, as shown in FIGS. 11 and 12, a plate 18 having the same shape as an arbitrary surface of various polyhedrons is provided, and a hole 19 formed in this plate 18 and an S Letter-shaped connecting fittings 20
By hooking ..., the board 18 can be attached to the faces of various polyhedrons.

The above-mentioned positive 4 as shown in FIGS. 13 to 22
Face piece 11, regular hexahedron 21, regular octahedron 22, regular dodecahedron 23, said icosahedron 10, said tetradecahedron 9 and 60
An n-hedron such as a face (not shown). Also triangular prism 2
4, square prism 25, pentagonal prism 26, hexagonal prism 27, etc. is the basic structure, and by connecting these same polyhedra or connecting different polyhedra to each other, it is possible to multiply infinitely, and regular and irregular polyhedra can be combined with one type of joint A. Can be built. This is because the angle of each side, that is, the bone B, originally differs depending on the type of polyhedron (for example, the angle of the regular tetrahedron 11 is 60
(for example, the regular hexahedron 21 is 90 degrees), or the distances between each vertex or between the vertices and the center are slightly different (for example, the regular hexahedron 21 is 90 degrees).
In the case of a facepiece, if the length of each bone B is a, the length from the apex to the center is √10+2√5/4a → 0.951056a, which is a little short). However, due to the elasticity of the joint A itself, each arm 2a The angle of ~2f can be changed to some extent,
Moreover, the ring portion 1 can be twisted in a spiral manner, and the strain occurring at various locations can be dispersed and absorbed.

Applications of the present invention include, for example, skeletal structures such as assembly and propagation toys, teaching materials, mobiles, shelves, book stands, storage cases, and tents.

Figures 23 to 26 show joint A of the present invention.
This shows a modification of joints 28, 2.
Each of 9 has six arms 3 extending horizontally from the ring part 31.
2... are formed protrudingly. Also joint 28
Only first recesses 33, 33 and second recesses 34, 34 corresponding to the first recesses 4, 4 and the fourth recesses 7, 7 of the joint A are formed in the ring portion 31,
The two joints 28, 28 are combined in a cross shape. Furthermore, three joints 29, 29, 29 are provided on the inner and outer surfaces of the ring portion 31 of the joint 29.
First recesses 35, 35, second recesses 36, 36, third recesses 37, 37 and corresponding fourth recesses 38, 38, fifth recesses 39, 3
9. Sixth recesses 40, 40 are formed.

"Effects of the Invention" As is clear from the above examples, the present invention has a plurality of radially integrated arms 2 for connecting the bones B, which are the sides of the polyhedron, to the outer periphery of the annular joint body 1 formed of an elastic material. In the joint of the formed polyhedral structure, a plurality of sets of recesses 4, 5, 6 are formed on the inner peripheral surface of the joint main body 1, and
The recess 4 is formed on the outer peripheral surface of the joint body 1.
A pair of recesses 7 are formed to engage the joints 5 and 6, and the other joint body 1 is configured to be freely combined with the inner circumference of the joint body 1 in a cross shape, thereby increasing the strength to support the entire structure being constructed. By forming the joint A with an elastic material, for example, even if the angle of the bone B differs depending on the type of polyhedron, or if the distance between each vertex or the distance between the vertex and the center differs slightly,
Due to the elasticity of joint A itself, each arm 2a to 2f
The angle of the ring part 1 can be changed freely to some extent, the ring part 1 is twisted in a spiral shape, and the strain that occurs in various places is dispersed and absorbed. Furthermore, even if many bones B are concentrated at one point, the two joints A and A1 can be combined to form the arm. 2
By doubling the number of arms, you can deal with it without having to prepare joints with a large number of special arms.
All types of polyhedra can be constructed using one type of joint A, and the joint A can connect the same polyhedra or connect different polyhedra, making it possible to multiply polyhedral structures infinitely without increasing the types of parts. It has the following effects.

[Brief explanation of the drawing]

Figure 1 is a front view of the joint of the present invention, Figure 2 is a bottom view of the same, Figure 3 is a front view of the combined joint,
Fig. 4 is a left side view of the same, Fig. 5 is a plan view of the same, Fig. 6 is an explanatory diagram of bones, Fig. 7 is an overall view of the tetradecahedron, Fig. 8 is an enlarged view of the same part, Fig. 9 is a normal 20 An overall view of the facepiece, Figure 10 is an explanatory diagram of the rotation joint, Figure 11 is an explanatory diagram of the installation of the plate, Figure 12 is an enlarged view of the same part, and Figure 1
3 to 22 are explanatory diagrams of the basic structure, and FIGS. 23 to 26 are explanatory diagrams showing modified examples of the joint. A...Joint, B...Bone, 1...Ring part, 2...
arm.

Claims (1)

[Scope of utility model registration request] Annular joint body 1 formed of elastic material
In a joint of a polyhedral structure in which a plurality of arms 2 for connecting bones B serving as sides of the polyhedron are integrally formed on the outer periphery in a radial manner, a plurality of sets of recesses 4, 5, 6 are provided on the inner peripheral surface of the joint main body 1. and forming a set of recesses 7 on the outer peripheral surface of the joint main body 1 to engage with the recesses 4, 5, 6,
A joint of a polyhedral structure characterized in that a joint body 1 is configured such that another joint body 1 can be freely combined with the inner periphery of the joint body 1 in a cross shape.