Intelligent ball core and pyramid magic cube using same

Abstract

The utility model relates to the technical field of magic cubes, in particular to an intelligent ball core and a pyramid magic cube using the same. The intelligent ball core comprises a shell, a shaft core frame is arranged in the shell, and the shaft core frame is provided with a plurality of installation faces; the sensing modules are arranged on each mounting surface; the power module is arranged on the shaft core frame, and each sensing module is electrically connected with the power module; the multiple rotating shafts are arranged on the shell at intervals, one end of each rotating shaft is connected with the corresponding sensing module, and the other end of each rotating shaft extends out of the shell; the sensing module comprises a brush disc arranged on the shaft core frame, a brush piece and two Hall sensors are arranged on the brush disc, and the brush piece and the Hall sensors are electrically connected with the brush disc. A double-sensor structure is adopted, position information obtained by the outer angle block and the inner angle block is accurate, and the condition of step loss is avoided; meanwhile, the internal space of the pyramid magic cube is fully utilized, and the installation size of the pyramid magic cube is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a magic cube technical field, concretely is a kind of intelligent ball core and the pyramid magic cube using it. BACKGROUND

[0002] Pyramid magic cube is a tetrahedron heterotypic magic cube. It was invented by German scientist Professor Miffet in 1970. Pyramid magic cube has four outer corner blocks, four inner corner blocks and six edge blocks, and its color arrangement can be changed by rotation. The axis rotating block can rotate without changing the state, the six edge blocks can also rotate freely, and the four top blocks can rotate independently of other blocks. When the four top blocks rotate with the axis rotating block, a disordered state with only the color of the edge block changing is formed.

[0003] At present, the functions of conventional pyramid magic cubes are relatively single, and they cannot communicate with external electronic devices, lacking interest. In order to improve the interest of magic cube operation, some electronic magic cubes appear on the market, that is, sensors and other electronic components are arranged on the magic cube to detect the face rotation information of the magic cube. For example, Chinese patent CN215572668U discloses a "non-contact encoder orientation sensing intelligent magic cube ball shaft and magic cube", which includes an upper shell and a lower shell fitted at the bottom of the upper shell, six rotating shafts installed on the upper shell and the lower shell, and radial magnets installed at the bottom of the rotating shafts. An intelligent control assembly is installed between the upper shell and the lower shell, which includes a main control module and a battery module. The main control module includes an integrated FPC flexible board folded into a hexahedron, and an orientation sensing encoder chip is installed at the center of each face of the FPC flexible board. A main control SOC and a gyroscope chip are also installed on the FPC flexible board. Axle center positioning magnets are installed on the eight end corners of the hexahedral FPC flexible board. The ball shaft is installed with an integrated FPC flexible board folded into a hexahedron, uses a non-contact encoder chip, cooperates with axle center magnetic positioning, and is more accurate in positioning, greatly increases the controllability and adjustability of the intelligent magic cube, avoids mechanical contact type life decline, and effectively prolongs the service life to tens of millions of times. However, the integrated FPC flexible board folded into a hexahedron in the above structure has complex production process, high cost, less available space for axle center, and complex design and installation, which is easy to lose step and cannot meet the double sensor function required by the structure of pyramid magic cube, so it needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an intelligent ball core and a pyramid magic cube using the same, to solve the technical problems of complex structure and easy to lose step of the intelligent ball shaft with sensing function in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides an intelligent ball core, which includes a shell with an axle core frame inside, the axle core frame has multiple mounting surfaces;

[0006] A sensing module is provided on each of the mounting surfaces;

[0007] A power module is mounted on the shaft core frame, and each of the sensing modules is electrically connected to the power module;

[0008] A plurality of rotating shafts are spaced apart on the housing, each rotating shaft corresponding to a sensing module. One end of each rotating shaft is connected to the corresponding sensing module, and the other end of the rotating shaft extends outside the housing.

[0009] The sensing module includes a brush disk mounted on the shaft core frame. The brush disk is provided with brush plates and two Hall sensors. The brush plates and the Hall sensors are electrically connected to the brush disk, and the end of the rotating shaft is connected to the brush plates.

[0010] Preferably, the mounting surface is provided with a plurality of limiting posts, the brush plate is provided with a plurality of limiting grooves, and the limiting posts are inserted into the corresponding limiting grooves;

[0011] The mounting surface is provided with a number of limiting blocks, and one side of the brush disk abuts against the limiting block.

[0012] Preferably, the power module includes a power supply, a conductive plate, and a bracket. The shaft core frame has a connecting post inside, and the connecting post has a connecting hole. The bottom end of the bracket has an elongated positioning part, which is inserted into the connecting hole. The power supply is mounted on the bracket, and the conductive plate is mounted on the power supply. One end of the conductive plate is electrically connected to the power supply, and the other end of the conductive plate is electrically connected to one of the brush disks.

[0013] The power module also includes an elastic conductive element. The bracket has a receiving groove, and the elastic conductive element is disposed in the receiving groove. One end of the elastic conductive element is electrically connected to the power supply, and the other end of the elastic conductive element is electrically connected to another brush plate.

[0014] Preferably, the conductive sheet includes an integrally formed substrate, a first contact pin, and a second contact pin, the first contact pin and the second contact pin being disposed at a distance from each other in the middle of the substrate, and both the first contact pin and the second contact pin being electrically connected to the power supply.

[0015] Preferably, the elastic conductive element is a tower-shaped spring with a diameter that gradually increases from top to bottom, the tower-shaped spring having a lead, the end of which is electrically connected to the brush disk.

[0016] Preferably, the brush plate includes a base plate and a first contact strip, a second contact strip, and a third contact strip fixed to the base plate and spaced apart. The base plate is detachably connected to the rotating shaft. The first contact strip, the second contact strip, and the third contact strip all extend obliquely to one side of the base plate and are connected to the brush plate.

[0017] Preferably, the brush plate is a combination of rigid and flexible plates.

[0018] Preferably, the housing is provided with a bushing, which is sleeved on the outer wall of the rotating shaft.

[0019] Preferably, the power source is a battery.

[0020] In addition, this utility model also proposes a pyramid cube using the intelligent ball core as described in any of the above claims. The pyramid cube further includes outer corner pieces, inner corner pieces, and edge pieces. The outer corner pieces are connected to the top of the rotating shaft. The inner corner pieces are fitted onto the rotating shaft. The edge pieces are engaged between two adjacent inner corner pieces. The inner corner pieces and the edge pieces are rotatably disposed on the outside of the housing. Each inner corner piece is provided with three induction magnets. The orthographic projection of the inner corner piece is triangular. The induction magnets are located on the line connecting any vertex of the inner corner piece to its center, such that:

[0021] When the outer corner block is rotated, the rotating shaft and the brush plate rotate synchronously, and the brush disk is used to obtain the rotation position of the outer corner block; when the inner corner block is rotated, the edge block rotates synchronously with it, and the Hall sensor obtains the rotation position of the inner corner block by sensing the sensing magnet.

[0022] The intelligent ball core and the pyramid cube using it disclosed in this utility model have the following beneficial effects: The sensing module inside the intelligent ball core adopts a structure of a rotating shaft, metal brush, and brush disk, and two additional Hall sensors are set on this basis. The dual-sensor structure is realized by using Hall positioning plus brush sensing, and each mounting surface is equipped with the above-mentioned dual sensors. When the rotating shaft rotates synchronously with the outer corner pieces, it can drive the brush to rotate synchronously. The brush disk, as a signal input and output board, can obtain the rotation information of the outer corner pieces. When the inner corner pieces and edge pieces rotate, the two Hall sensors can sense the three induction magnets in different directions on the inner corner pieces, thereby obtaining the specific position of the inner corner pieces and edge pieces. The obtained position information is relatively accurate, avoiding the situation of missing steps. At the same time, it makes full use of the internal space of the pyramid cube, reducing the installation volume of the pyramid cube. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the intelligent ball core of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the intelligent sphere core of this utility model without a shell;

[0026] Figure 3 This is a partial structural schematic diagram of the intelligent ball core of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the central axis frame in the intelligent ball core of this utility model;

[0028] Figure 5 This is a schematic diagram of the power module in the intelligent ball core of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the rotating shaft and brush plate in the intelligent ball core of this utility model;

[0030] Figure 7 This is a schematic diagram of the brush plate in the intelligent ball core of this utility model;

[0031] Figure 8 This is a schematic diagram of the conductive sheet in the intelligent sphere core of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the pyramid cube of this utility model;

[0033] Figure 10 This is a partial structural diagram of the inner corner pieces and the intelligent ball core in the pyramid cube of this utility model;

[0034] Figure 11 This is a schematic diagram of the internal structure of the inner corner pieces in the pyramid cube of this utility model.

[0035] In the attached diagram: 1-Housing, 11-Sleeve, 2-Shaft core frame, 21-Mounting surface, 211-Limiting post, 212-Limiting block, 22-Connecting post, 221-Connecting hole, 3-Sensing module, 31-Brush plate, 311-Limiting groove, 32-Brush piece, 321-Base plate, 322-First contact strip, 323-Second contact strip, 324-Third contact strip, 33-Hall sensor, 4-Power module, 41-Power supply, 42-Conductive sheet, 421-Base plate, 422-First contact foot, 423-Second contact foot, 43-Bracket, 431-Positioning part, 432-Accommodating groove, 44-Elastic conductive element, 441-Pin, 5-Rotating shaft, 6-Flexible circuit board, 7-Outer corner block, 8-Inner corner block, 81-Positioning magnet, 9-Edge block.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] like Figures 1 to 8 As shown, a smart ball core includes a housing 1, inside which a core frame 2 is provided, the core frame 2 having multiple mounting surfaces 21;

[0041] Sensing module 3, each of the mounting surfaces 21 is provided with a sensing module 3;

[0042] A power module 4 is mounted on the shaft core frame 2, and each of the sensing modules 3 is electrically connected to the power module 4;

[0043] A plurality of rotating shafts 5 are spaced apart on the housing 1. Each rotating shaft 5 corresponds one-to-one with a sensing module 3. One end of each rotating shaft 5 is connected to the corresponding sensing module 3, and the other end of the rotating shaft 5 extends out of the housing 1.

[0044] The sensing module 3 includes a brush disk 31 mounted on the shaft core frame 2. The brush disk 31 is provided with a brush plate 32 and two Hall sensors 33. The brush plate 32 and the Hall sensors 33 are electrically connected to the brush disk 31, and the end of the rotating shaft 5 is connected to the brush plate 32.

[0045] In this solution, the intelligent ball core includes a housing 1, a sensing module 3, a power module 4, and a rotating shaft 5. The rotating shaft 5 can rotate under the action of external force, and the power module 4 is used to supply power to the sensing module 3.

[0046] Because the internal installation space of the Pyramid Cube is small, when the Pyramid Cube is twisted, the outer corner piece 7 can drive the pivot 5 to rotate freely (this is the first set of rotating parts). In addition, the outer corner piece 7 and the inner corner piece 8 and edge piece 9 on the pivot 5 can also rotate at the same time (this is the second set of rotating parts). That is, at this time, the above two sets of parts are rotating on the pivot 5. Due to the small size, it is not possible to use the brush 32 to obtain the position information of the above two sets of parts at the same time; it is also not possible to set two sets of induction magnets 81 and Hall sensor 33 at the same time to obtain the position information of these two sets of rotatable parts, because there will be mutual interference.

[0047] Therefore, the sensing module 3 inside the intelligent ball core of this solution adopts a structure of rotating shaft 5 + metal brush 32 + brush disk 3131 (signal input / output board). Two additional Hall sensors 33 are added on this basis. The dual-sensor structure is achieved by using Hall positioning combined with brush 32 sensing. Each mounting surface 21 is equipped with the aforementioned dual sensors. When the rotating shaft 5 rotates synchronously with the outer corner block 7, it can drive the brush 32 to rotate synchronously, and the brush disk 31, acting as a signal input / output board, can acquire the rotation information of the outer corner block 7. When the inner corner block 8 and the edge block 9 rotate (the outer corner block 7 rotates simultaneously, and its position information is acquired as described above), the two Hall sensors... Hall sensors 33 can sense the sensing magnets 81 on different inner corner pieces 8. When the inner corner piece 8 / edge piece 9 rotates one face, the rotation angle is 120°. At this time, the sensing magnet 81 on the inner corner piece 8 corresponds to two Hall sensors 33. When rotating again, the inner corner piece 8 rotates 120 degrees. At this time, the sensing magnet 81 on the inner corner piece 8 corresponds to two other Hall sensors 33. Thus, the Hall sensors 33 can be used to obtain the specific position of the inner corner piece 8 / edge piece 9. The obtained position information of the outer corner piece 7 and inner corner piece 8 is relatively accurate, preventing missed moves. At the same time, it makes full use of the internal space of the pyramid cube and reduces the installation volume of the pyramid cube.

[0048] In addition, this solution introduces a core frame 2 inside the housing 1. The sensing module 3 and the power module 4 are installed at specific positions on the core frame, which facilitates the assembly of each module, saves the installation space of each module, improves the installation accuracy of each module inside the intelligent ball core, and enhances the structural stability. At the same time, the core frame 2 is different from the traditional solid structure. Its interior is hollow, which reduces the internal weight of the ball core.

[0049] In summary, this solution integrates the structural design and assembly of the electronic hardware of the smart ball core through the above structure, making the surface displacement sensing more accurate, reducing the step loss rate, simplifying the internal components of the ball core, and making its overall operation smoother and more reliable.

[0050] Furthermore, the mounting surface 21 is provided with a plurality of limiting posts 211, and the brush plate 31 is provided with a plurality of limiting grooves 311, with the limiting posts 211 inserted into the corresponding limiting grooves 311;

[0051] The mounting surface 21 is provided with a plurality of limiting blocks 212, and one side of the brush disk 31 abuts against the limiting block 212.

[0052] In this design, the brush disc 31 is stably mounted on the shaft core frame 2 through the cooperation of the limiting posts 211 and the limiting grooves 311. During actual installation, two, three, or more limiting posts 211 can be installed on each mounting surface 21 of the shaft core frame. Correspondingly, two, three, or more limiting grooves 311 are also provided on the brush disc 31. Each limiting post 211 is inserted into its corresponding limiting groove 311. The cooperation of multiple limiting posts 211 secures the brush disc 31, preventing it from easily shifting on the shaft core frame 2. The limiting grooves 311 can be located inside or on the side of each brush disc 31.

[0053] To further ensure the stability of the brush plate 31, a limiting block 212 can be added to the mounting surface 21. The limiting block 212 abuts against the side wall of the brush plate 31, so that the brush plate 31 is firmly clamped on the shaft frame and is not easy to move when subjected to external impact.

[0054] Furthermore, such as Figure 5 As shown, the power module 4 includes a power supply 41, a conductive plate 42, and a bracket 43. The shaft core frame 2 has a connecting post 22 inside, and the connecting post 22 has a connecting hole 221 inside. The bottom end of the bracket 43 has an elongated positioning part 431, which is inserted into the connecting hole 221. The power supply 41 is mounted on the bracket 43, and the conductive plate 42 is mounted on the power supply 41. One end of the conductive plate 42 is electrically connected to the power supply 41, and the other end of the conductive plate 42 is electrically connected to one of the brush disks 31.

[0055] The power module 4 also includes an elastic conductive element 44. The bracket 43 has a receiving groove 432. The elastic conductive element 44 is disposed in the receiving groove 432. One end of the elastic conductive element 44 is electrically connected to the power supply 41, and the other end of the elastic conductive element 44 is electrically connected to another brush disk 31.

[0056] In this embodiment, the power supply 41 is fixed inside the shaft frame by the bracket 43. The positioning part 431 of the bracket 43 is locked in the connecting hole 221 of the connecting column 22 of the shaft frame to prevent the bracket 43 and the power supply 41 from shaking. In addition, multiple support columns are provided inside the shaft frame, and the support columns abut against the lower end of the bracket 43 to further improve the installation stability of the bracket 43.

[0057] In the first group of sensing modules 3, the brush disk 31 is electrically connected to the power supply 41 through the conductive sheet 42; the brush disk 31 of the second group of sensing modules 3 is electrically connected to the power supply 41 through the elastic conductive element 44; and the brush disks 31 of the other sensing modules 3 are electrically connected to the brush disks 31 of the first group of sensing modules 3 through the flexible circuit board 6.

[0058] Furthermore, such as Figure 8As shown, the conductive sheet 42 includes an integrally formed substrate 421, a first contact pin 422 and a second contact pin 423. The first contact pin 422 and the second contact pin 423 are spaced apart in the middle of the substrate 421. Both the first contact pin 422 and the second contact pin 423 are electrically connected to the power supply 41.

[0059] In this embodiment, the substrate 421 is provided with a first contact pin 422 and a second contact pin 423. The formed double contact conductive sheet 42 can improve the lifespan of the smart ball core and, on this basis, improve the power supply stability of the smart ball core, making the smart ball core more reliable.

[0060] Furthermore, the elastic conductive element 44 is a tower-shaped spring with a diameter gradually increasing from top to bottom. The tower-shaped spring has a lead 441, the end of which is electrically connected to the brush disk 31. Compared to traditional helical springs, the tower-shaped spring occupies less space after compression and is less prone to poor contact due to vibration. In this design, the tower-shaped spring is made of conductive metal and is electrically connected to the brush disk 31 of the second set of sensing modules 3 via the lead 441.

[0061] Furthermore, such as Figure 7 As shown, the brush plate 32 includes a base plate 321 and a first contact strip 322, a second contact strip 323 and a third contact strip 324 fixed on the base plate 321 and spaced apart. The base plate 321 is detachably connected to the rotating shaft 5. The first contact strip 322, the second contact strip 323 and the third contact strip 324 all extend obliquely to one side of the base plate 321 and are connected to the brush disk 31.

[0062] Thus, the first contact strip 322, the second contact strip 323, and the third contact strip 324 set on the base plate 321 form a special brush plate 32. The end of each contact strip makes point contact with the brush disk 31, that is, a three-contact design is adopted to sense the three directions of the pyramid cube's rotation (that is, the first set of rotating parts of the pyramid cube can be sensed when it rotates to any of the three faces). This reduces the probability of the function failing due to the failure of a certain contact point, improves the stability of the displacement sensing signal transmission, effectively reduces the step loss rate, and makes the smart ball core more reliable. In addition, the outer contour of the entire base plate 321 is approximately elliptical, and there are arc rotation guides on both sides of the base plate 321, which makes it less prone to errors, jamming, and poor contact.

[0063] Furthermore, the brush plate 31 is a rigid-flex PCB. In this embodiment, the circuit board uses a rigid-flex PCB, which reduces the risk of product defects caused by soldering errors and improves the overall stability of the smart ball core.

[0064] Furthermore, a bushing 11 is provided on the housing 1, and the bushing 11 is fitted onto the outer wall of the rotating shaft 5. By directly designing the bushing 11 structure onto the housing 1 of the smart ball core, the strength during rotation is increased, the shaking of the rotating shaft 5 is reduced, and the stability of the displacement sensing signal is further ensured.

[0065] Furthermore, the power source 41 is a battery.

[0066] In particular, such as Figures 9 to 11 As shown, this utility model also proposes a pyramid cube using the intelligent ball core described in any of the above claims. The pyramid cube further includes an outer corner piece 7, an inner corner piece 8, and an edge piece 9. The outer corner piece 7 is connected to the top of the rotating shaft 5. The inner corner piece 8 is fitted onto the rotating shaft 5. The edge piece 9 is engaged between two adjacent inner corner pieces 8. The inner corner pieces 8 and the edge piece 9 are rotatably disposed on the outside of the housing 1. An induction magnet 81 is provided on the inner corner piece 8. The orthographic projection of the inner corner piece 8 is triangular. The induction magnet 81 is located on the line connecting any vertex of the inner corner piece 8 to its center, such that:

[0067] When the outer corner block 7 is rotated, the rotating shaft 5 and the brush 32 rotate synchronously, and the brush 32 is used to obtain the rotation position of the outer corner block 7; when the inner corner block 8 is rotated, the edge block 9 rotates synchronously with it, and the Hall sensor 33 obtains the rotation position of the inner corner block 8 by sensing the sensing magnet 81.

[0068] The pyramid cube includes any of the aforementioned smart cores, and therefore has the same beneficial effects as the aforementioned smart cores, which will not be elaborated on here.

[0069] In practical use, rotating the outer corner piece 7 of the pyramid cube can drive the rotating shaft 5 to rotate, thereby causing the brush 32 to rotate and generate a displacement sensing signal, which is received by the brush disk 31. The two sensing magnets 81 and the two Hall sensors 33 on the smart ball core can cooperate to identify three different angles. Rotating the inner corner piece 8 of the pyramid cube can drive the positioning sensing magnet 81 of the inner corner piece 8 to rotate, so that the Hall sensor 33 can obtain the rotation signal and generate a signal change. The two sets of brushes 32 and Hall sensors 33 control the sensing signals of two different rotating parts respectively, without affecting each other.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A smart sphere core, characterized in that, include: The housing (1) has a shaft core frame (2) inside, and the shaft core frame (2) has multiple mounting surfaces (21); Sensing module (3), each of the mounting surfaces (21) is provided with a sensing module (3); A power module (4) is mounted on the shaft core frame (2), and each of the sensing modules (3) is electrically connected to the power module (4); Rotating shaft (5), a plurality of rotating shafts (5) are spaced apart on the housing (1), the rotating shaft (5) corresponds one to one of the sensing modules (3), one end of each rotating shaft (5) is connected to the corresponding sensing module (3), and the other end of the rotating shaft (5) extends to the outside of the housing (1); The sensing module (3) includes a brush plate (31) disposed on the shaft core frame (2). The brush plate (31) is provided with a brush blade (32) and two Hall sensors (33). The brush blade (32) and the Hall sensors (33) are electrically connected to the brush plate (31) respectively. The end of the rotating shaft (5) is connected to the brush blade (32).

2. The intelligent sphere core according to claim 1, characterized in that, The mounting surface (21) is provided with a plurality of limiting posts (211), and the brush plate (31) is provided with a plurality of limiting grooves (311). The limiting posts (211) are inserted into the corresponding limiting grooves (311). The mounting surface (21) is provided with a plurality of limiting blocks (212), and one side of the brush plate (31) abuts against the limiting block (212).

3. The intelligent sphere core according to claim 1, characterized in that, The power module (4) includes a power supply (41), a conductive plate (42), and a bracket (43). The shaft core frame (2) has a connecting post (22) inside, and a connecting hole (221) is provided inside the connecting post (22). The bottom end of the bracket (43) has an elongated positioning part (431) which is inserted into the connecting hole (221). The power supply (41) is mounted on the bracket (43), and the conductive plate (42) is mounted on the power supply (41). One end of the conductive plate (42) is electrically connected to the power supply (41), and the other end of the conductive plate (42) is electrically connected to one of the brush disks (31). The power module (4) further includes an elastic conductive element (44). The bracket (43) is provided with a receiving groove (432). The elastic conductive element (44) is disposed in the receiving groove (432). One end of the elastic conductive element (44) is electrically connected to the power supply (41), and the other end of the elastic conductive element (44) is electrically connected to another brush disk (31).

4. The intelligent sphere core according to claim 3, characterized in that, The conductive sheet (42) includes an integrally formed substrate (421), a first contact pin (422) and a second contact pin (423). The first contact pin (422) and the second contact pin (423) are spaced apart in the middle of the substrate (421). Both the first contact pin (422) and the second contact pin (423) are electrically connected to the power supply (41).

5. The intelligent sphere core according to claim 3, characterized in that, The elastic conductive element (44) is a tower-shaped spring with a diameter that gradually increases from top to bottom. The tower-shaped spring has a pin (441), and the end of the pin (441) is electrically connected to the brush disk (31).

6. The intelligent sphere core according to claim 1, characterized in that, The brush plate (32) includes a base plate (321) and a first contact strip (322), a second contact strip (323) and a third contact strip (324) fixed on the base plate (321) and spaced apart. The base plate (321) is detachably connected to the rotating shaft (5). The first contact strip (322), the second contact strip (323) and the third contact strip (324) all extend obliquely to one side of the base plate (321) and are connected to the brush disk (31).

7. The intelligent sphere core according to claim 1, characterized in that, The brush plate (31) is a combination of hard and soft plates.

8. The intelligent sphere core according to claim 1, characterized in that, The housing (1) is provided with a bushing (11), which is sleeved on the outer wall of the rotating shaft (5).

9. A smart sphere core according to claim 3, characterized in that, The power source (41) is a battery.

10. A pyramid-shaped Rubik's Cube, characterized in that, Using the smart ball core as described in any one of claims 1-9, the pyramid cube further includes an outer corner piece (7), an inner corner piece (8), and a edge piece (9). The outer corner piece (7) is connected to the top of the rotating shaft (5). The inner corner piece (8) is fitted onto the rotating shaft (5). The edge piece (9) is engaged between two adjacent inner corner pieces (8). The inner corner piece (8) and the edge piece (9) are rotatably disposed on the outside of the housing (1). The inner corner piece (8) is provided with a plurality of induction magnets (81). The orthographic projection of the inner corner piece (8) is triangular. The induction magnets (81) are located on the line connecting any vertex of the inner corner piece (8) and its center, such that: When the outer corner block (7) is rotated, the rotating shaft (5) and the brush (32) rotate synchronously, and the brush disk (31) is used to obtain the rotation position of the outer corner block (7); When the inner corner block (8) is rotated, the edge block (9) rotates synchronously with it, and the Hall sensor (33) obtains the rotation position of the inner corner block (8) by sensing the sensing magnet (81).

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