Magnetic second-order magic cube and corner block

Abstract

The application provides a magnetic second-order magic cube corner block. The corner block comprises an inner core body, three outer wall plates, a center magnet and three side magnets. The inner core body has three inner wall plates which enclose the inner top corner of the second-order corner block. The inner top corner is provided with a recess. A center tube with an axis equal to the included angle of the three inner wall plates is arranged at the inner top corner of the inner core body on the side opposite to the recess. The center magnet is blocked in the center tube by a first blocking member and can rotate freely. The inner wall plates are provided with side wall tubes parallel to the center tube. Each side wall tube is blocked by a second blocking member and has a freely rotating side magnet. The three outer wall plates are fixed to the inner core body and enclose a square structure. Since the included angle of the center tube and the three inner wall plates is equal, the center tube is a smooth round tube structure without any adjusting gap or limiting ring table structure. The center tube part can be easily demolded, the structure of the mold is simplified, manufacturing is facilitated, and the mold opening cost is reduced.

Description

Technical Field

[0001] This invention relates to a magnetically attached corner piece of a 2x2 Rubik's Cube, and also to a magnetically attached 2x2 Rubik's Cube. Background Technology

[0002] Magnetic-type 2x2 Rubik's Cubes are currently a popular type. They combine 2x2 corner pieces using magnetic attraction, simplifying the corner piece structure. The applicant previously disclosed a novel magnetic-type 2x2 Rubik's Cube in Chinese Invention Patent CN110665214A, which features magnetic balls on three first mounting surfaces. To accommodate these magnetic balls, adjustment notches and limiting rings are provided on the mounting bases on the first mounting surfaces. The limiting rings allow the magnetic balls to detach from the mounting bases. However, in manufacturing this 2x2 Rubik's Cube corner pieces, the structure at the location of the limiting rings is complex, and the three limiting rings are perpendicular to each other, resulting in a confined space and a complex mold structure. Furthermore, the product is difficult to demold, making manufacturing challenging. Summary of the Invention

[0003] One objective of this invention is to overcome the shortcomings of the prior art and provide a magnetically attached corner piece for a second-order Rubik's Cube that is easy to manufacture.

[0004] Another object of the present invention is to provide a magnetically attached 2x2 Rubik's Cube with such magnetically attached corner pieces.

[0005] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.

[0006] According to one aspect of the present invention, a magnetically attached second-order Rubik's Cube corner block includes an inner core, three outer wall plates, a central magnet, and three side magnets. The inner core has three inner wall plates that are perpendicularly connected to each other in pairs, forming the inner apex of the second-order corner block, and a recess for engaging with a steel ball is provided at the inner apex. A central tube is provided on the opposite side of the recess at the inner apex of the inner core, with its axis equidistant from the angles of the three inner wall plates. The central magnet is sealed within the central tube by a first sealing member and is free to rotate. Each of the three inner wall plates has a side wall tube parallel to the central tube, and each side wall tube contains a freely rotating side magnet sealed by a second sealing member. The three outer wall plates are fixed to the inner core and form a square structure.

[0007] According to one embodiment of the present invention, one corner of the outer wall panel is provided with an arc-shaped plate that can be inserted into the central tube, and the arc-shaped plates of the three outer wall panels are assembled to form a cylindrical first sealing member that can be inserted into the central tube.

[0008] According to one embodiment of the present invention, when the first sealing member is inserted into the central tube, it is bonded to the central tube or fixedly connected by friction.

[0009] According to one embodiment of the present invention, each of the outer wall panels is provided with a semi-cylindrical semi-circular plate on both sides of the arc-shaped plate, and the semi-circular plates of two adjacent outer wall panels are joined together to form a cylindrical second sealing member that can be inserted into the side wall tube.

[0010] According to one embodiment of the present invention, when the second sealing member is inserted into the sidewall tube, it is bonded to the sidewall tube or fixedly connected by friction.

[0011] According to one embodiment of the present invention, the outer wall panel is made of plastic of different colors.

[0012] According to one embodiment of the present invention, the recess is provided with a first through hole communicating with the central tube, and the central magnet can partially protrude from the first through hole; the inner wall plate is provided with a second through hole communicating with the side wall tube, and the side magnet can partially protrude from the second through hole.

[0013] According to another aspect of the present invention, a magnetic 2x2 Rubik's Cube includes a steel ball, characterized in that it also includes eight aforementioned magnetic 2x2 Rubik's Cube corner pieces, the recesses of the magnetic 2x2 Rubik's Cube corner pieces forming a central space to accommodate the steel ball; the central magnet is capable of attracting the steel ball to connect the eight magnetic 2x2 Rubik's Cube corner pieces together; the side magnets on the contact surfaces of two adjacent magnetic 2x2 Rubik's Cube corner pieces are capable of attracting each other.

[0014] As can be seen from the above technical solution, the advantages and positive effects of the present invention are as follows:

[0015] This invention relates to a magnetically attached second-order Rubik's Cube corner block. Because the central tube has an equal angle with the three inner wall plates, the central tube portion can be easily demolded during manufacturing. Since the central tube and the three side wall tubes are smooth circular tube structures without any adjustment notches or limiting rings, the mold structure is simplified, manufacturing is easier, and mold-making costs are reduced. Attached Figure Description

[0016] The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a magnetically attached second-order Rubik's Cube corner piece according to an embodiment of the present invention, viewed from one angle.

[0018] Figure 2 yes Figure 1The diagram shows the structure of a magnetically attached 2x2 Rubik's Cube corner piece when viewed from another angle.

[0019] Figure 3 yes Figure 2 A schematic diagram of the inner core when viewed from one angle;

[0020] Figure 4 yes Figure 3 The diagram shows the structure of the inner core when viewed from another angle.

[0021] Figure 5 yes Figure 2 A schematic diagram of the outer wall panel in the middle;

[0022] Figure 6 There are three Figure 5 The diagram shown illustrates the assembly of the outer wall panels.

[0023] Figure 7 This is a schematic diagram of the central magnet of the corner piece of this magnetic 2x2 Rubik's Cube;

[0024] Figure 8 This is a schematic diagram of the side magnets of the corner pieces of this magnetic 2x2 Rubik's Cube;

[0025] Figure 9 This is a schematic diagram of the steel ball in the corner piece of this magnetic 2x2 Rubik's Cube;

[0026] Figure 10 This is a schematic diagram of a magnetically attached second-order Rubik's Cube according to an embodiment of the present invention;

[0027] Figure 11 It is a display Figure 10 The diagram shows how the steel ball in the magnetic 2x2 Rubik's Cube is paired with the corner piece of the magnetic 2x2 Rubik's Cube.

[0028] In the diagram: 1. Inner core; 10. Magnetic second-order Rubik's Cube corner piece; 110. First inner wall plate; 111. Second inner wall plate; 112. Third inner wall plate; 12. Inner apex corner; 13. Recess; 14. Central tube; 150. First side wall tube; 151. Second side wall tube; 152. Third side wall tube; 16. First through hole; 2. Outer wall plate; 20. Steel ball; 21. Arc plate; 22. First sealing element; 23. Semicircular plate; 24. Second sealing element; 25. Second through hole; 3. Central magnet; 4. Side magnet. Detailed Implementation

[0029] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0030] like Figures 1 to 11 As shown, an embodiment of the present invention discloses a magnetically attached second-order Rubik's Cube corner piece 10, which includes an inner core 1, three outer wall plates 2, a central magnet 3, and three side magnets 4.

[0031] The inner core 1 is a plastic part, and it has three inner wall plates that are perpendicular to each other in pairs, as shown in the details. Figure 3 As shown, the inner core 1 has a first inner wall plate 110, a second inner wall plate 111, and a third inner wall plate 112. The first inner wall plate 110 and the second inner wall plate 111 are perpendicular to each other, the second inner wall plate 111 and the third inner wall plate 112 are perpendicular to each other, and the third inner wall plate 112 and the first inner wall plate 110 are perpendicular to each other. Figure 3 It can be seen that the three inner wall panels form a right-angled structure, that is, the first inner wall panel 110, the second inner wall panel 111 and the third inner wall panel 112 form the inner apex angle 12 of the second-order corner block, and a recess 13 for cooperating with the steel ball is provided at the inner apex angle 12.

[0032] As is well known, a 2x2 Rubik's Cube consists of eight 2x2 corner pieces. Therefore, eight magnetic 2x2 Rubik's Cube corner pieces of this embodiment can form a 2x2 Rubik's Cube. In use, the inner vertices 12 of these eight magnetic 2x2 Rubik's Cube corner pieces are all located on the inside.

[0033] A central tube 14 is located on the opposite side of the recess 13 at the inner apex of the inner core 1, with its axis forming an angle equal to that of the three inner wall plates. In other words, the central tube 14 is located inside the inner wall plates. Because the central tube 14 forms an angle equal to that of the three inner wall plates, it can be easily demolded during manufacturing. Each of the three inner wall plates has a side wall tube parallel to the central tube 14: a first side wall tube 150 parallel to the central tube 14 on the first inner wall plate 110, a second side wall tube 151 parallel to the central tube 14 on the second inner wall plate 111, and a third side wall tube 152 parallel to the central tube 14 on the third inner wall plate 112. Obviously, these three side wall tubes can also be easily demolded during manufacturing. Since the central tube 14 and the three side wall tubes are all smooth circular tube structures without any adjustment notches or limiting rings, this also simplifies the mold structure, facilitates manufacturing, and reduces mold opening costs.

[0034] like Figures 4 to 6 As shown, in this embodiment, the outer wall panel 2 is mainly a square plate. An arc-shaped plate 21, capable of inserting into the central tube 14, is provided at one corner of the outer wall panel 2. The cross-section of the arc-shaped plate 21 is one-third of a circle. The three arc-shaped plates 21 of the outer wall panel 2 can be assembled into a cylindrical first sealing member 22. The axis of the first sealing member 22 can coincide with the axis of the central tube 14. The central magnet 3 can be installed into the central tube 14. After the central magnet 3 is installed into the central tube 14, the first sealing member 22, composed of the three arc-shaped plates 21, can be inserted into the central tube 14, thereby sealing the central magnet 3 inside the central tube 14. At this time, the central magnet 3 is not completely fixed inside the central tube 14; it is only restricted by the first sealing member 22 and cannot roll out of the central tube 14, but the central magnet 3 can rotate freely inside the central tube 14. When the first sealing member 22 is inserted into the central tube 14, it is adhered to the central tube 14 or fixedly connected by friction. Of course, the three outer wall panels can be glued together first and then their edges can be glued to the edge of the inner core 1. In this case, the first sealing member 22 does not need to be substantially connected to the central tube 14, and the two can be in no contact with each other.

[0035] The central magnet 3 can be one of a magnetic sphere, a magnetic cylinder with similar height and diameter, or a cubic magnetic block. When the central magnet 3 is a magnetic cylinder, the height and diameter of the magnetic cylinder are smaller than the inner diameter of the central tube 14; specifically, the ratio of the height to the diameter of the magnetic cylinder is 0.9 to 1.1. When the central magnet 3 is a cubic magnetic block, the diameter of the circumscribed sphere of the cubic magnetic block is smaller than the inner diameter of the central tube 14. Using magnetic cylinders and cubic magnetic blocks can reduce the manufacturing cost of the central magnet 3.

[0036] A semi-cylindrical semi-circular plate 23 is provided on each side of the outer wall panel 2, located on both sides of the arc-shaped plate 21. The cross-section of the semi-circular plate 23 is semi-circular. When the outer wall panels 2 are assembled together, the semi-circular plates 23 on two adjacent outer wall panels 2 are combined to form a cylindrical second sealing member 24. The axis of the second sealing member 24 is parallel to the axis of the first sealing member 22. Each second sealing member 24 is inserted into one of the side wall tubes. Similarly, each side wall tube is sealed by a freely rotatable side magnet 4 through a second sealing member 24. When the second sealing member 24 is inserted into the side wall tube, it is either bonded to the side wall tube or fixedly connected by friction.

[0037] The side magnet 4 can be one of a magnetic sphere, a magnetic cylinder with similar height and diameter, or a cube-shaped magnetic block. When the side magnet is a magnetic cylinder, the height and diameter of the magnetic cylinder are smaller than the inner diameter of the sidewall tube; specifically, the ratio of the height to the diameter of the magnetic cylinder is 0.9 to 1.1. When the side magnet is a cube-shaped magnetic block, the diameter of the outer sphere of the cube-shaped magnetic block is smaller than the inner diameter of the sidewall tube. When the side magnet 4 is a magnetic cylinder or a cube-shaped magnetic block, it will collide with the sidewall tube and produce a sound during use, similar to the feel of a magnetic sphere, and will provide a more noticeable sound feedback effect to the user. Using magnetic cylinders and cube-shaped magnetic blocks can reduce the manufacturing cost of the side magnet 4.

[0038] The axes of the arc plate 21 and the semicircular plate 23 are parallel, so no adjustment notch or limiting ring platform needs to be formed during manufacturing. The demolding directions of the arc plate 21 and the semicircular plate 23 are the same. Therefore, the outer wall plate 2 has a simple structure and is relatively convenient to manufacture by mold opening.

[0039] In this embodiment of the invention, the first sealing element 22 is assembled using arc-shaped plates 21, and the second sealing element 24 is assembled using semi-circular plates 23, eliminating the need for additional independent sealing elements. Obviously, separate first and second sealing elements can also be used. After sealing the central magnet and side magnets with the first and second sealing elements, the outer wall plate 2 is installed on the inner core 1. In this case, the simplest cylindrical shape can be used for the separate first and second sealing elements. Figure 2 As shown, the three outer wall panels 2 are fixed to the inner core 1 and form a square structure, which is the overall structure of the corner piece of the magnetic second-order Rubik's Cube.

[0040] In this embodiment, the outer wall panel 2 is made of plastic of different colors. After the outer wall panel 2 is installed, different colors can be directly formed on the outer surface of the corner pieces of the magnetic 2x2 Rubik's Cube. Of course, the outer wall panel 2 can also be made of the same color, and then different colors can be formed by printing or stickers. When the outer wall panel 2 is the same color, it is also possible to directly manufacture an integral structure composed of these three outer wall panels 2.

[0041] like Figure 3 As shown, a first through hole 16 communicating with the central tube 14 is provided at the recess 13, and the central magnet 3 can partially protrude from the first through hole 16; a second through hole 25 communicating with the side wall tube is provided on the inner wall plate, and the side magnet 4 can partially protrude from the second through hole 25. By setting the first through hole 16 and the second through hole 25, the positions of the central magnet 3 and the side magnet 4 can be made as protruding as possible, the central magnet 3 is closer to the steel ball, and the adjacent side magnets 4 are also as close as possible, thereby improving the magnetic attraction effect.

[0042] like Figure 10 and Figure 11As shown, this embodiment also discloses a magnetically attached 2x2 Rubik's Cube, including a steel ball 20 and eight magnetically attached 2x2 Rubik's Cube corner pieces 10. The recesses 13 of the magnetically attached 2x2 Rubik's Cube corner pieces form a central space to accommodate the steel ball 20. The central magnet 3 can attract the steel ball 20, thereby connecting the eight magnetically attached 2x2 Rubik's Cube corner pieces 10 together. The side magnets 4 on the contact surfaces of two adjacent magnetically attached 2x2 Rubik's Cube corner pieces 10 can attract each other. The inner core of the magnetically attached 2x2 Rubik's Cube of this embodiment can be easily demolded during manufacturing. Since the central tube 14 and the three side wall tubes are all smooth circular tube structures without any adjustment notches or limiting rings or other fine structures, it is also beneficial to simplify the mold structure, facilitate manufacturing, and reduce mold opening costs.

[0043] Exemplary embodiments of the present invention have been specifically illustrated and described above. It should be understood that the present invention is not limited to the disclosed embodiments; rather, the present invention is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A magnetically attached second-order Rubik's Cube corner piece, comprising an inner core, three outer wall plates, a central magnet, and three side magnets, characterized in that, The inner core has three inner wall plates that are perpendicularly connected to each other in pairs. These three inner wall plates form the inner apex of a second-order corner block, and a recess for engaging with a steel ball is provided at this inner apex. A central tube is located on the opposite side of the recess at the inner apex of the inner core, with its axis forming an angle equal to that of the three inner wall plates. The central magnet is sealed within the central tube by a first sealing element and is able to rotate freely. Each of the three inner wall plates has a side wall tube parallel to the central tube, and each side wall tube is sealed by a second sealing element, allowing it to rotate freely. The structure consists of a rotating side magnet; three outer wall plates fixed to the inner core and forming a square structure; an arc-shaped plate at one corner of each outer wall plate that can be inserted into the central tube; the arc-shaped plates of the three outer wall plates are assembled to form a cylindrical first sealing member that can be inserted into the central tube; a semi-cylindrical semi-circular plate is provided on each side of the outer wall plate located on both sides of the arc-shaped plate, the axes of the arc-shaped plate and the semi-circular plate are parallel, and the semi-circular plates of two adjacent outer wall plates are assembled to form a cylindrical second sealing member that can be inserted into the side wall tube; When the first sealing member is inserted into the central tube, it is bonded to the central tube or fixedly connected by friction. When the second sealing member is inserted into the side wall tube, it adheres to the side wall tube or is fixedly connected by friction.

2. The magnetically attached corner piece of a second-order Rubik's Cube according to claim 1, characterized in that, The outer wall panels are made of plastics of different colors.

3. The magnetically attached second-order Rubik's Cube corner piece according to claim 1, characterized in that, The recess is provided with a first through hole communicating with the central tube, and the central magnet can partially protrude from the first through hole; the inner wall plate is provided with a second through hole communicating with the side wall tube, and the side magnet can partially protrude from the second through hole.

4. The magnetically attached corner piece of a second-order Rubik's Cube according to claim 1, characterized in that, The central magnet is one of a magnetic sphere, a magnetic cylinder with a height-to-diameter ratio of 0.9 to 1.1, or a cubic magnetic block; when the central magnet is a magnetic cylinder, the height and diameter of the magnetic cylinder are less than the inner diameter of the central tube; when the central magnet is a cubic magnetic block, the diameter of the outer sphere of the cubic magnetic block is less than the inner diameter of the central tube.

5. The magnetically attached second-order Rubik's Cube corner piece according to claim 1, characterized in that, The side magnet is one of a magnetic sphere, a magnetic cylinder with a height-to-diameter ratio of 0.9 to 1.1, or a cubic magnetic block; when the side magnet is a magnetic cylinder, the height and diameter of the magnetic cylinder are smaller than the inner diameter of the side wall tube; when the side magnet is a cubic magnetic block, the diameter of the outer sphere of the cubic magnetic block is smaller than the inner diameter of the side wall tube.

6. A magnetically attached second-order Rubik's Cube, comprising a steel ball, characterized in that, It also includes eight magnetically attached 2x2 Rubik's Cube corner pieces as described in any one of claims 1 to 5, wherein the recesses of the magnetically attached 2x2 Rubik's Cube corner pieces enclose a central space for accommodating the steel ball; the central magnet is capable of attracting the steel ball to connect the eight magnetically attached 2x2 Rubik's Cube corner pieces together; the side magnets on the contact surfaces of two adjacent magnetically attached 2x2 Rubik's Cube corner pieces are capable of attracting each other.

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