Mechanical positioning device of magic cube

Abstract

The mechanical positioning device comprises a middle body and center blocks arranged on the side faces of the middle body, abutting columns facing the side faces of the middle body are connected to the center blocks in a sliding mode, abutting discs abutting against the side faces of the middle body are arranged at one ends of the abutting columns, and abutting covers are arranged at the other ends of the abutting columns. The abutting column is sleeved with a first spring located between the center block and the abutting cover, annular wavy protrusions are arranged on the side face of the middle body, and the abutting disc is matched with the wavy protrusions in shape. The positioning bolt sequentially penetrates through the abutting cover, the abutting column and the abutting disc, the positioning bolt is in threaded connection with the side face of the middle body, and a second spring arranged on the positioning bolt in a sleeving mode is arranged between the abutting cover and a cap of the positioning bolt. When the Rubik's cube rotates, under the action of the wavy fluctuation, the abutting connection discs can drive the abutting connection columns to enable the rotating faces to have an automatic return acting force, and the problem that the continuity is poor in the rotating process of an existing Rubik's cube is effectively solved.

Description

Technical Field

[0001] This utility model belongs to the field of toy technology, and specifically relates to a mechanical positioning device for a Rubik's Cube. Background Technology

[0002] The Rubik's Cube is widely popular as an educational toy. To turn the Rubik's Cube, the pieces need to be aligned before it can be turned again.

[0003] Existing document CN202222888707.3 discloses a 4x4 Rubik's Cube, which includes a center track, center pieces, edge pieces, corner pieces, corner magnets, and prism magnets. Each corner piece includes a bottom shell and three color plates. The bottom shell has connecting posts and recesses for mounting the three color plates. This utility model has a reasonable structural design. The bottom shell is an integral structure with good structural stability, while the three color plates are exposed and do not contact the edge pieces during assembly; only the bottom shell contacts the edge pieces. This prevents gaps during rotation, ensuring a smooth surface and effectively improving the assembly effect, making rotation easier and smoother. Furthermore, when rotated to a predetermined position, the corner and edge pieces are attracted by the corner magnets and prism magnets, allowing them to quickly return to their correct positions. This means that even without precise alignment, they can automatically return to their correct positions, thus solving the problem of easily getting stuck.

[0004] Existing document CN201711293276.3 discloses a Rubik's Cube with a magnetic adsorption device, comprising corner inner pieces and edge inner pieces. A first magnet is disposed on each of the three sides of the corner inner piece adjacent to the edge piece; a second magnet is disposed on each of the two sides of the edge inner piece adjacent to the corner piece; the first and second magnets have opposite magnetic properties. The two second magnets in the edge inner piece are located on the same horizontal plane; the three first magnets in the corner inner piece are all located on the same horizontal plane as their adjacent second magnets. Double-post or triple-post slots or grooves for mounting the first magnets are provided on the three sides of the corner inner piece adjacent to the edge piece; double-post or triple-post slots or grooves for mounting the second magnets are provided on the two sides of the edge inner piece adjacent to the corner piece. The addition of the mutually attracting magnetic adsorption device allows the Rubik's Cube to be magnetically attracted during its return to its original position, resulting in a more compact and smooth return, faster return speed, more comfortable feel, and higher overall stability.

[0005] The Rubik's Cubes in the two documents mentioned above both use magnets installed between the edge and corner pieces, which is called magnet positioning technology. A 3x3 Rubik's Cube needs to be equipped with at least 48 magnets. The Rubik's Cube is rotated into position by the attraction between the magnets of different edge and corner pieces, making it easy to rotate again. However, the magnet positioning force of this type of Rubik's Cube with magnets is not continuous, and there is a noticeable sense of abruptness when rotating, resulting in poor continuity in the rotation process. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a mechanical positioning device for Rubik's Cube to solve the problem of poor continuity in the current Rubik's Cube rotation process.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A mechanical positioning device for a Rubik's Cube includes an intermediate body and center blocks disposed on each side of the intermediate body. Abutment posts facing the side of the intermediate body are slidably connected to the center blocks. One end of each abutment post has an abutment plate that abuts against the side of the intermediate body, and the other end has an abutment cover. A first spring is sleeved on the abutment post between the center blocks and the abutment cover. The side of the intermediate body has an annular wavy protrusion, and the abutment plate is adapted to the shape of the wavy protrusion. The device also includes positioning bolts that sequentially pass through the abutment cover, abutment posts, and abutment plates. The positioning bolts are threadedly connected to the side of the intermediate body, and a second spring is disposed between the abutment cover and the cap of the positioning bolt, which is sleeved on the positioning bolt.

[0009] Furthermore, the intermediate body is a six-sided cube.

[0010] Furthermore, the wavy protrusion includes a cross-shaped protrusion and four recesses. The cross-shaped protrusion is set with the center of the side of the intermediate body as the origin, and the four recesses are respectively located in the four quadrants of the cross-shaped protrusion. The connection between the four recesses and the cross-shaped protrusion is smoothly transitioned.

[0011] Furthermore, the abutment plate has four protrusions corresponding to the four recesses, and the protrusions are located within the corresponding recesses.

[0012] Furthermore, the abutment post is a cuboid, and limit protrusions are provided on each edge along the length direction of the abutment post. A through hole adapted to the abutment post is provided on the central block.

[0013] Furthermore, a surrounding plate is provided on the side of the central block away from the intermediate body, and a first limiting ring coaxial with the abutting post is provided on the side of the central block away from the intermediate body, with the first spring located inside the first limiting ring.

[0014] Furthermore, a second limiting ring is provided at the end of the abutment cover away from the abutment post, and the second spring is located inside the second limiting ring.

[0015] The significant beneficial effects achieved by this utility model are as follows:

[0016] 1. This application uses a second spring to ensure that the abutment post drives the abutment plate to always be in contact with the wave-shaped protrusion of the middle body. When the Rubik's Cube is rotated, the abutment plate will drive the abutment post under the action of the wave-shaped undulation, so that the rotating face has an automatic return force, helping the rotating face to re-align with other faces. The force of this mechanical positioning device is continuous, the feel is better, and it effectively solves the problem of poor continuity in the current Rubik's Cube rotation process. Moreover, the mechanical positioning device in this application has a significant cost advantage compared with the magnetic positioning technology.

[0017] 2. The cross-shaped protrusions and four recesses allow for precise positioning of the cube's rotating faces, further ensuring that the cube can be rotated into position.

[0018] 3. The setting of the limit protrusion can prevent shaking or displacement during the sliding of the abutment column.

[0019] 4. The first limiting ring and the second limiting ring can effectively limit the first spring and the second spring respectively.

[0020] 5. The side panel is used to connect to the cover plate, which is located at the center of the outer side of the Rubik's Cube. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the structure of the present invention in use;

[0022] Appendix Figure 2 This is a schematic diagram of the assembly state structure of this utility model;

[0023] Appendix Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0024] Appendix Figure 4 This is a cross-sectional structural diagram of the present invention;

[0025] Appendix Figure 5 This is a schematic diagram of the intermediate structure in this utility model.

[0026] In the attached drawings: 1. Intermediate body; 2. Center block; 3. Abutting post; 4. Abutting plate; 5. Abutting cover; 6. First spring; 8. Positioning bolt; 9. Second spring; 10. Cross-shaped protrusion; 11. Recess; 12. Protruding foot; 13. Limiting protrusion; 14. Enclosure plate; 15. First limiting ring; 16. Second limiting ring; 17. Cover plate; 18. Edge block; 19. Corner block. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figures 1-5 As shown, a mechanical positioning device for a Rubik's Cube includes an intermediate body 1 and a center block 2 disposed on each side of the intermediate body 1. An abutment post 3 facing the side of the intermediate body 1 is slidably connected to the center block 2. An abutment plate 4 that abuts against the side of the intermediate body 1 is fixedly connected to one end of the abutment post 3. An abutment cover 5 is detachably connected to the other end of the abutment post 3. A first spring 6 is sleeved on the abutment post 3 between the center block 2 and the abutment cover 5. The side of the intermediate body 1 is provided with an annular wavy protrusion. The shape of the abutment plate 4 is adapted to the wavy protrusion.

[0029] It also includes a positioning bolt 8 that passes through the abutment cover 5, the abutment post 3 and the abutment plate 4 in sequence. The positioning bolt 8 is threaded to the center of the side of the intermediate body 1. A second spring 9 is provided between the abutment cover 5 and the cap of the positioning bolt 8 and is sleeved on the positioning bolt 8.

[0030] Specifically, intermediate body 1 is a six-sided cube, and there are six center blocks 2, which correspond to the six faces of intermediate body 1 respectively;

[0031] A sliding abutment post 3 is connected to the center of the central block 2. The sliding direction of the abutment post 3 is perpendicular to the side of the intermediate body 1. The abutment post 3 is a cuboid. An abutment plate 4 is fixedly connected to one end of the abutment post 3 near the side of the intermediate body 1. An abutment cover 5 is sleeved on the other end of the abutment post 3 away from the intermediate body 1. The abutment cover 5, the abutment post 3, the abutment plate 4 and the corresponding side of the intermediate body 1 are all coaxially arranged.

[0032] Installation principle: When assembling the Rubik's Cube, first, insert the abutment post 3 onto the center piece 2, then put the first spring 6 onto the abutment post 3, install the abutment cover 5 at the end of the abutment post 3, and then put the second spring 9 onto the positioning bolt 8. After the positioning bolt 8 passes through the abutment cover 5, the abutment post 3 and the abutment plate 4 in sequence, it is threaded to the side of the intermediate body 1. Similarly, install the remaining five center pieces 2 corresponding to the six sides of the intermediate body 1 in sequence. After all the center pieces 2 are installed on the six sides of the intermediate body 1 by the positioning bolt 8, install the cover plate 17 on the side of the center piece 2 away from the intermediate body 1. Then install the remaining edge pieces 18 and corner pieces 19 between the center pieces 2 and the intermediate body 1 in sequence to complete the assembly of the Rubik's Cube.

[0033] The cover plate 17 is used to cover the side of the center block 2 away from the intermediate body 1, and at the same time covers the abutment cover 5 and the positioning bolt 8.

[0034] Working principle: During the rotation of one face of the Rubik's Cube, since the position of the middle body 1 is fixed, the abutment post 3 rotates with the rotating face around the positioning bolt 8. During the rotation of the abutment post 3, due to the matching of the wavy protrusion on the side of the middle body 1 and the abutment plate 4 with the wavy protrusion, the abutment plate 4 will rise and fall with the undulation of the wavy protrusion. Under the elastic force of the first spring 6, the center piece 2 positions the edge piece. At the same time, since the position of the positioning bolt 8 is fixed, under the action of the second spring 9, the abutment post 3 always abuts against the side of the middle body 1. When one face of the Rubik's Cube is rotated, the abutment plate 4 moves away from the middle body 1 under the action of the wavy protrusion. However, under the action of the second spring 9, when the lowest point of the abutment plate 4 reaches the highest point of the wavy protrusion (or slightly passes the highest point), under the elastic force of the second spring 9, the abutment plate 4 will descend along the path of the wavy protrusion. The abutment plate 4 and the wavy protrusion will re-fit and be positioned. At this time, the rotating face of the Rubik's Cube will be re-aligned. When the Rubik's Cube is rotated again, a certain resistance will be generated.

[0035] In this embodiment, the elastic force of the second spring 9 is greater than that of the first spring 6. After assembly, the force of the second spring 9 acts directly on the intermediate body 1 through the abutment post 3. At the same time, the center piece 2 is also strongly constrained, preventing the cube from feeling loose. Currently, most Rubik's Cubes only have one spring acting on the center piece 2 per face. This presents a problem: if the elastic force is too strong, the friction during rotation is high, affecting smoothness and feel; if the elastic force is too weak, the stroke needs to be very small, otherwise it will feel very loose. However, a very small spring stroke will affect the fault tolerance performance, which is not conducive to improving competition results. The structure of the double-spring assembly can solve this problem. The first spring 6 can minimize the friction during rotation, while the second spring 9 keeps the cube intact and prevents it from feeling loose, and also increases the fault tolerance performance.

[0036] This application utilizes the elasticity of a double-spring assembly to provide friction for the rotation of center piece 2 during its rotation, generating a certain degree of damping. This improves the feel of the rotation process, prevents loose rotation, and avoids affecting the rotation effect. It effectively prevents the problem of loose connection of center piece 2, and increases the error tolerance of the Rubik's Cube during rotation, eliminating the jamming phenomenon that hinders rotation.

[0037] In summary, this application uses the second spring 9 to ensure that the abutment post 3 drives the abutment plate 4 to always be in contact with the wave-shaped protrusion of the intermediate body 1. When the Rubik's Cube is rotated, the abutment plate 4 will drive the abutment post 3 under the action of the wave-shaped undulation, so that the rotating face has an automatic return force, which helps the rotating face to be aligned with other faces again, effectively solving the problem that the Rubik's Cube is prone to not rotating in place during the current rotation process.

[0038] Example 2

[0039] like Figures 1-5 As shown, the structure of this embodiment is roughly the same as that of embodiment 1. This embodiment is further optimized based on embodiment 1. In this embodiment, in order to achieve the best effect of the Rubik's Cube's rotating face returning to its original position, the wave-shaped protrusion includes a cross-shaped protrusion 10 and four recesses 11. The cross-shaped protrusion 10 is set with the center of the side of the intermediate body 1 as the origin. That is to say, the intersection of the cross-shaped protrusion 10 is the center of the side of the intermediate body 1. The cross-shaped protrusion 10 is formed by the X-axis and Y-axis being perpendicular to each other. The four recesses 11 are located in the four quadrants of the cross-shaped protrusion 10 respectively. The connection between the four recesses 11 and the cross-shaped protrusion 10 is smoothly transitioned.

[0040] The abutment plate 4 is rectangular. Each of the four corners of the abutment plate 4 has four downward protruding feet 12 corresponding to the four recesses 11. The protruding feet 12 are located inside the recesses 11. When the pieces of the Rubik's Cube are aligned, the lowest point of the concave corner is in contact with the lowest point of the recess 11.

[0041] In other words, when the Rubik's Cube rotates, every time it rotates 45 degrees or more, the second spring 9, the abutment post 3, and the abutment plate 4 will cause the rotating face to generate the potential energy to return to its original position, thus preventing the Rubik's Cube from not rotating to its correct position and allowing for more precise guidance on the rotation position of the Rubik's Cube.

[0042] Example 3

[0043] like Figures 1-5 As shown, the structure of this embodiment is roughly the same as that of embodiment 2. This embodiment is further optimized based on embodiment 2. In this embodiment, a limit protrusion 13 is integrally formed on the edge along the length direction of the abutment post 3, and a through hole adapted to the abutment post 3 is opened on the center block 2.

[0044] The movement direction of the abutment post 3 is limited by the setting of the limiting protrusion 13, which further prevents the abutment post 3 from deviating during the sliding process.

[0045] In this embodiment, a surrounding plate 14 is installed on the side of the central block 2 away from the intermediate body 1, and a first limiting ring 15 coaxial with the abutting post 3 is installed on the side of the central block 2 away from the intermediate body 1. The first spring 6 is located inside the first limiting ring 15, and the first limiting ring 15 is located inside the surrounding plate 14.

[0046] A second limiting ring 16 is installed at the end of the abutment cover 5 away from the abutment post 3. The second spring 9 is located inside the second limiting ring 16. It should be noted that after the positioning bolt 8 is threadedly connected to the center of the intermediate body 1, the cap of the positioning bolt 8 is located inside the second limiting ring 16.

[0047] The side of the positioning bolt 8 is perpendicular to the corresponding side of the intermediate body 1.

[0048] Furthermore, it should be noted that this application can also be applied to pyramid cubes or multi-level cubes by adjusting the number of sides of the intermediate body. These are all conventional techniques used by those skilled in the art and fall within the protection scope of this application.

Claims

1. A mechanical positioning device for a Rubik's Cube, characterized in that: The system includes an intermediate body (1) and a central block (2) disposed on each side of the intermediate body (1). Abutment posts (3) facing the side of the intermediate body (1) are slidably connected to the central block (2). Abutment plates (4) that abut against the side of the intermediate body (1) are provided at one end of the abutment posts (3). Abutment covers (5) are provided at the other end of the abutment posts (3). A first spring (6) is sleeved on the abutment posts (3) and located between the central block (2) and the abutment covers (5). A ring-shaped wave-like protrusion is provided on the side of the intermediate body (1). The shape of the abutment plates (4) is adapted to the wave-like protrusion. The system also includes a positioning bolt (8) that passes through the abutment covers (5), the abutment posts (3) and the abutment plates (4) in sequence. The positioning bolts (8) are threaded to the side of the intermediate body (1). A second spring (9) is sleeved on the positioning bolts (8) between the caps of the abutment covers (5) and the positioning bolts (8).

2. The mechanical positioning device for a Rubik's Cube according to claim 1, characterized in that: The intermediate body (1) is a six-sided cube.

3. The mechanical positioning device for a Rubik's Cube according to claim 1, characterized in that: The wave-shaped protrusion includes a cross-shaped protrusion (10) and four recesses (11). The cross-shaped protrusion (10) is set with the center of the side of the intermediate body (1) as the origin. The four recesses (11) are located in the four quadrants of the cross-shaped protrusion (10) respectively. The connection between the four recesses (11) and the cross-shaped protrusion (10) is smoothly transitioned.

4. The mechanical positioning device for a Rubik's Cube according to claim 3, characterized in that: The abutment plate (4) has four protrusions (12) corresponding to the four recesses (11), and the protrusions (12) are located in the corresponding recesses (11).

5. The mechanical positioning device for a Rubik's Cube according to claim 1, characterized in that: The abutment post (3) is a cuboid, and a limiting protrusion (13) is provided on each edge along the length direction of the abutment post (3). The center block (2) is provided with a through hole that matches the abutment post (3).

6. The mechanical positioning device for a Rubik's Cube according to claim 1, characterized in that: A surrounding plate (14) is provided on the side of the central block (2) away from the intermediate body (1), and a first limiting ring (15) coaxial with the abutting post (3) is provided on the side of the central block (2) away from the intermediate body (1), and the first spring (6) is located inside the first limiting ring (15).

7. The mechanical positioning device for a Rubik's Cube according to claim 1, characterized in that: The abutment cover (5) is provided with a second limiting ring (16) at one end away from the abutment post (3), and the second spring (9) is located inside the second limiting ring (16).

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