Modularized magnetic self-adaptive rotary locking connecting device

Abstract

The invention discloses a modularized magnetic self-adaptive rotary locking connecting device, which is characterized in that a convex positioning pin is arranged on the outer wall of the end part of a plug module, and a circular mortise of a socket module matched with the convex positioning pin is provided with a positioning groove and an arc-shaped groove matched with the positioning pin; the plug module is provided with a pair of embedded plug magnetic blocks and socket magnetic blocks, rotation torque is formed on the plug module under magnetic acting force, and self-adaptive rotation positioning and reliable locking connection are achieved through magnetism. The device is free of elastic parts and bolt parts, the potential safety hazards of mechanical fatigue and part abrasion of the elastic parts are eliminated, the mechanical service life is long, the connection safety and reliability are high, and universal, standardized and modularized connection of the connector can be achieved. The method has wide application prospects in the technical fields of automobiles, electronics, medical instruments, aerospace, new energy, automation and the like.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a modular magnetic adaptive rotation locking connection device. Background Art

[0002] Connectors are widely used in technical fields such as automobiles, electronics, medical equipment, aerospace, new energy, and automation. At present, existing connectors are often connected by mortise and tenon structures, and mechanical structures such as elastic components and threads are used to strengthen the connection. The mechanical life of elastic components is limited, and the plugging and unplugging force requires manual control. The durability and reliability of the connection are not ideal, and the connection reliability is also affected by human operation factors. The threaded structure connection is more reliable, but its connection and disassembly operations are cumbersome. There are also connectors that use a direct-insert magnetic suction structure connection method, but there is a risk of falling off, and its reliability and safety are not good. It is still necessary to further adopt a strengthened connection structure. Some connectors will also add a locking device separately, which is relatively complex in structure and troublesome to disassemble.

[0003] Secondly, the connection structures used by existing connectors are mostly customized product structures based on the needs of various fields, which makes it difficult to achieve simultaneous connection and use of multiple connectors, and cannot achieve universal and modular connection and use of connectors. Summary of the invention

[0004] The purpose of the present invention is to provide a modular magnetic adaptive rotation locking connection device in view of the deficiencies and technical problems of the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a modular magnetic adaptive rotation locking connection device, comprising a socket module and a cylindrical plug module, the socket module is provided with a circular tongue for connecting the plug module, a protruding positioning pin is provided on the outer wall of the end of the plug module, the circular tongue is provided with a positioning groove matching the positioning pin, and an arc groove for accommodating the positioning pin to rotate along the axial direction of the plug module is provided in the socket module at the bottom of the circular tongue; the arc groove is provided along the outer circumference of the circular bottom surface of the circular tongue; At least one pair of plug magnetic blocks is provided on the circular end surface of the plug module, the paired plug magnetic blocks are arranged along the circumference of the circular end surface of the plug module, and the magnetic pole directions of the two plug magnetic blocks in the same pair are different, and the circular bottom surface of the circular tenon groove is also correspondingly provided with at least one pair of socket magnetic blocks arranged along the circumference, and the magnetic pole directions of the two socket magnetic blocks in the same pair are different; When the positioning pin of the plug module is aligned with the positioning groove of the socket module, the two plug magnetic blocks of the same pair are arranged alternately with the two socket magnetic blocks corresponding to them along the axial projection of the plug module, and the magnetic pole direction of each plug magnetic block is the same as the socket magnetic block adjacent to it on one side, and different from the magnetic pole direction of the socket magnetic block adjacent to it on the other side.

[0006] Furthermore, the plug module is inserted into the socket module through the circular mortise and tenon and the full-length positioning groove, and under the action of magnetic force, the positioning pin rotates along the axial direction of the plug module in the arc groove, so that the plug magnetic block and the socket magnetic block with different magnetic poles overlap and are magnetically positioned to lock the socket module and the plug module.

[0007] Furthermore, positioning pins and plug magnets are provided at both ends of the plug module, and the socket module is provided with a plurality of circular tenons for connecting the plug module and their corresponding positioning grooves, arc grooves and socket magnets, so as to realize the universal and modular connection and use of the connector.

[0008] Furthermore, the positioning pins at both ends of the plug module are staggered along the axial direction, and the central angle formed between the positioning pins at both ends along the axial direction is twice the central angle of the arc groove, which can realize the alignment of the socket modules connected at both ends of the plug module and realize standardized and modular connection.

[0009] Furthermore, the socket module is in a cube shape, and at least two of its six faces are provided with circular tenons and corresponding positioning grooves, arc grooves and socket magnets for connecting the plug module, and the arc grooves on the opposite faces are arranged symmetrically. The cube-shaped socket module can realize modular connection along the three-dimensional axial directions of the X-axis, Y-axis and Z-axis, and can realize the alignment of the socket modules connected at both ends of the plug module along a straight line, and has a wide range of application fields and application scenarios.

[0010] Furthermore, the plug magnetic block and the socket magnetic block have the same shape and size. When the locating pin of the plug module is aligned with the locating groove position of the socket module, the two plug magnetic blocks of the same pair are arranged in a staggered and non-overlapping manner along the axial projection of the plug module and the two socket magnetic blocks of the corresponding pair. The center angle formed between the centers of each pair of two plug magnetic blocks is the same as the center angle formed between the centers of each pair of two socket magnetic blocks, and the center angle is twice the center angle of the arc groove. That is, the center angle of the arc groove is the same as the center angle of the plug magnetic block from the start of rotation to the complete overlap with the adjacent socket magnetic block after the locating pin of the plug module is aligned with the locating groove position of the socket module; this design realizes the precise physical structural positioning of the locating pin rotation angle, so that each plug magnetic block is aligned with and overlaps with the corresponding socket magnetic block with different magnetic poles and then adsorbed, realizing the dual precise connection positioning of the physical structural positioning of the plug module rotation angle and the axial magnetic attraction positioning.

[0011] Furthermore, the plug magnetic block and the socket magnetic block are both embedded, and the surface of the plug magnetic block is flush with the circular end surface of the plug module, and the surface of the socket magnetic block is flush with the circular bottom surface of the circular tenon groove. After each pair of two plug magnetic blocks of the plug module and the corresponding two socket magnetic blocks with different magnetic poles are aligned and overlapped with each other, the circular end surface of the plug module and the circular bottom surface of the circular tenon groove are seamlessly fitted, the tolerance gap between the components can be eliminated, and the connection positioning accuracy of the socket module and the plug module can be greatly improved.

[0012] Furthermore, the socket module and the plug module are made of non-magnetic materials, and an insulating layer is provided on the surface; connection contacts for electrical connection are provided on the circular bottom surface of the circular groove in the socket module and the circular end surface of the plug module. It can be applied to the technical field of electrical connection plugs, and the plug magnetic block and the socket magnetic block are made of neodymium iron boron permanent magnetic material, which has excellent magnetic properties and can realize the miniaturization and micro-miniaturization design of the device.

[0013] Furthermore, the positioning pin is square and has an arc chamfer, and the positioning groove and the arc groove both have square cross-sections. This structural design can achieve precise positioning, facilitate the adaptive rotation connection of the device, and facilitate installation and disassembly operations.

[0014] Furthermore, the present invention discloses a locking connection method of the modular magnetic adaptive rotation locking connection device, and the specific steps are as follows: A. Insertion: Align the positioning pin of the plug module with the positioning slot of the socket module, and insert it into the socket module through the circular tenon groove; B. Adaptive rotation: The plug module is inserted into the bottom end of the circular mortise groove, and the positioning pin of the plug module enters the cavity of the arc groove. The two plug magnets on the same end face of the plug module are staggered and do not overlap between the two corresponding socket magnets. At this time, the magnetic pole direction of each plug magnet is the same as the socket magnet adjacent to one side, and the magnetic pole direction of each plug magnet is different from the socket magnet adjacent to the other side. Under the force of mutual repulsion of the same magnetic poles and mutual attraction of the opposite magnetic poles, a rotation torque is formed on the plug module, and the positioning pin rotates along the axial direction of the plug module in the arc groove; C. Precise positioning and locking: After the positioning pin rotates to the end of the arc groove, the plug module stops rotating. The inner wall of the rotating groove simultaneously forms rotation angle and axial limit for the positioning pin. The arc groove limits the physical structure of the plug module connection. Each pair of two plug magnetic blocks of the plug module are aligned and overlapped with the corresponding pair of socket magnetic blocks with different magnetic poles, and then adsorbed and fitted. The plug module is axially magnetically positioned again by the magnetic adsorption force between the plug magnetic block and the socket magnetic block, and the connection between the socket module and the plug module is precisely positioned and locked.

[0015] Furthermore, when the socket module is provided with a plurality of circular tenons and corresponding positioning grooves, arc grooves and socket magnets for connecting the plug module, positioning pins and plug magnets are provided at both ends of the plug module, and the other end of the plug module can be connected to another socket module by repeating the above steps A to C; multiple socket modules can also be connected through multiple plug modules.

[0016] Furthermore, in step C, the plug magnetic block and the socket magnetic block are both embedded, and each pair of two plug magnetic blocks of the plug module are aligned and overlapped with the corresponding two socket magnetic blocks with different magnetic poles, and then adsorbed and fitted together, so that the circular end surface of the plug module and the circular bottom surface of the circular groove are seamlessly fitted together, and the connection positioning and locking are tighter and more precise.

[0017] Disassembly method: Use external force to rotate the locating pin of the plug module along the arc-shaped slot to overcome the magnetic force in the opposite direction until the locating pin is aligned with the locating slot, then pull out the plug module along the slot to complete the disassembly and separation of the device.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the socket module is provided with a circular mortise and tenon for connecting the plug module, a protruding positioning pin is provided on the outer wall of the end of the plug module, and a positioning groove and an arc groove matching the positioning pin are opened in the circular mortise and tenon; the circular end surface of the plug module is provided with at least one pair of even number of embedded plug magnetic blocks arranged in pairs, the plug magnetic blocks are arranged along the circumference of the circular end surface of the plug module, and at least one pair of even number of embedded socket magnetic blocks arranged along the circumference are also provided at corresponding positions on the circular bottom surface of the circular mortise and tenon; When the positioning pin is aligned with the positioning slot of the socket module, the two plug magnets of the same pair are arranged alternately and non-overlappingly with the two socket magnets of the corresponding pair along the axial projection of the plug module, and the magnetic pole direction of each plug magnet is the same as the socket magnet adjacent to it on one side, and different from the magnetic pole direction of the socket magnet adjacent to it on the other side. Under the action of the mutual repulsion of like magnetic poles and the mutual attraction of unlike magnetic poles, a rotational torque is formed on the plug module, and the positioning pin rotates along the axial direction of the plug module in the arc groove; adaptive rotation positioning and reliable locking connection are achieved through magnetism.

[0019] The arc-shaped groove structurally limits the rotation angle of the plug module. At this time, each plug magnetic block of the plug module overlaps with and adsorbs the corresponding socket magnetic block with different magnetic poles. The plug module is axially magnetically positioned again through magnetic adsorption between the plug magnetic block and the socket magnetic block, accurately positioning and locking the connection between the socket module and the plug module.

[0020] The device uses an arc groove to physically limit the rotation angle, and axially locks and positions the plug module through magnetic adsorption of the plug magnetic block and the socket magnetic block, thereby achieving double-bidirectional precise positioning and reliable locking of the device connection, and the device connection and disassembly operations are simple and fast.

[0021] This device has no elastic parts and bolt parts, which solves the technical problems of mechanical fatigue and mechanical wear of elastic parts. It has long mechanical life, precise connection, high safety and reliability. The socket module can be provided with multiple circular mortise and tenon grooves, and both ends of the plug module are provided with positioning pins and plug magnetic blocks to realize the universalization, standardization and modular connection of the connector. It has broad application prospects in the fields of automobile, electronics, electrical, medical equipment, aerospace, new energy, automation and other technical fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a connection diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of connecting the two ends of the plug module to the socket module according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the axial arrangement of the socket magnetic block and the plug magnetic block according to an embodiment of the present invention; Figure 5 It is a schematic diagram of the axial arrangement of the socket magnetic block and the plug magnetic block when the positioning pin is aligned with the positioning groove according to the embodiment of the present invention; Figure 6 This is a schematic diagram of an adaptive rotation axis according to an embodiment of the present invention; Figure 7 This is an axial schematic diagram of the embodiment of the present invention after magnetic positioning; Figure 8 This is a schematic cross-sectional view of the embodiment of the present invention before connection; Fig. 9 It is a cross-sectional schematic diagram of the plug module plugging process according to an embodiment of the present invention; Fig.10 It is a cross-sectional schematic diagram of a plug module according to an embodiment of the present invention being inserted into the bottom end of a circular tenon groove; Fig.11 It is a cross-sectional schematic diagram of the embodiment of the present invention after rotational magnetic positioning.

[0023] Parts in the figure: 1-socket module; 2-plug module; 10-circular mortise and tenon groove; 11-socket magnet; 101-positioning groove; 102-arc groove; 20-positioning pin; 22-plug magnet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 11 A modular magnetic adaptive rotation locking connection device comprises a socket module 1 and a cylindrical plug module 2, wherein the socket module 1 is provided with a circular mortise 10 for connecting the plug module 2, a protruding positioning pin 20 is provided on the outer wall of the end of the plug module 2, the circular mortise 10 is provided with a positioning groove 101 matching the positioning pin 20, and an arc groove 102 for accommodating the positioning pin 20 to rotate along the axial direction of the plug module 2 is provided in the socket module 1 at the bottom of the circular mortise 10; the arc groove 102 is provided along the outer circumference of the circular bottom surface of the circular mortise 10; In this embodiment, two pairs of embedded plug magnets 22 are provided on the circular end surface of the plug module 2. Figure 4 , two pairs are arranged up and down, the plug magnetic block 22 is arranged along the circumference of the circular end surface of the plug module 2, the magnetic pole directions of the two plug magnetic blocks 22 in the same pair are different, and the circular bottom surface of the circular groove 10 is also correspondingly provided with two pairs of embedded socket magnetic blocks 11 arranged along the circumference, such as Figure 4 As shown, the magnetic pole directions of the two socket magnetic blocks 11 in the same pair are different.

[0026] like Figure 5 As shown, when the positioning pin 20 of the plug module 2 is aligned with the positioning groove 101 of the socket module 1, the two plug magnetic blocks 22 of the same pair are arranged alternately with the corresponding pair of two socket magnetic blocks 11 along the axial projection of the plug module 2, and the magnetic pole direction of each plug magnetic block 22 is the same as the socket magnetic block 11 adjacent to it on one side, and different from the magnetic pole direction of the socket magnetic block 11 adjacent to it on the other side.

[0027] This design enables the plug module 2 to be inserted into the socket module 1 through the circular mortise and tenon groove 10 and the full-length positioning groove 101, and under the action of magnetic force, the positioning pin 20 rotates along the axial direction of the plug module 2 in the arc groove 102, so that the plug magnetic block 22 and the socket magnetic block 11 with different magnetic poles overlap and are magnetically positioned to lock the socket module 1 and the plug module 2.

[0028] See also Figures 1 to 3 In this embodiment, positioning pins 20 and plug magnets 22 are provided at both ends of the plug module 2, and the socket module 1 is provided with two circular mortises 10 for connecting the plug module 2 and their corresponding positioning grooves 101, arc grooves 102 and socket magnets 11, which are used to realize the universalization and modular connection and use of the connector.

[0029] The locating pins 20 at the two ends of the plug module 2 are staggered along the axial direction, and the central angle formed between the locating pins 20 at both ends along the axial direction is twice the central angle of the arc groove 102, so that the socket modules 1 connected at both ends of the plug module 2 can be aligned to achieve standardized and modular connection.

[0030] See also Figures 1 to 3 In this embodiment, the socket module 1 is in a cube shape, and two of its six faces are provided with circular tongues and tongues 10 for connecting the plug module 2, and the arc grooves 102 on the opposite faces are arranged symmetrically. If the six faces are provided with circular tongues and tongues 10 for connecting the plug module 2, modular connection along the three-dimensional axial directions of the X axis, Y axis, and Z axis can be achieved, and the socket modules 1 connected at both ends of the plug module 2 can be aligned and flush along a straight line.

[0031] like Figure 4 , 5 As shown, the plug magnetic block 22 has the same shape and size as the socket magnetic block 11. When the positioning pin 20 of the plug module 2 is aligned with the positioning groove 101 of the socket module 1, the two plug magnetic blocks 22 of the same pair are arranged in a staggered and non-overlapping manner along the axial projection of the plug module 2 and the two socket magnetic blocks 11 of the corresponding pair. The center angle formed between the centers of each pair of two plug magnetic blocks 22 is the same as the center angle formed between the centers of each pair of two socket magnetic blocks 11, and the center angle is twice the center angle of the arc groove 102. That is, the central angle of the arc groove 102 is the same as the central angle of the plug magnet 22 when it rotates from the position where the locating pin 20 of the plug module 2 is aligned with the locating groove 101 of the socket module 1 and is inserted, to the position where it starts to rotate and completely overlaps with the adjacent socket magnet 11; this design achieves precise physical structural positioning of the rotation angle of the locating pin 20, so that each plug magnet 22 is aligned with, overlaps with, and then adsorbed to the corresponding socket magnet 11 with different magnetic poles, thereby achieving dual precise connection positioning of the physical structural positioning of the rotation angle of the plug module 2 and the axial magnetic attraction positioning.

[0032] The positioning pins 20 at the two ends of the plug module 2 are arranged in a staggered manner along the axial direction, and the central angle formed by the positioning pins 20 at both ends along the axial direction is twice the central angle of the arc groove 102. Fig.10 , 11 As shown, the central angle of the arc groove 102 is 45 degrees, and the central angle formed along the axial direction between the positioning pins 20 at both ends of the plug module 2 is 90 degrees. One end of the plug module 2 is connected to a socket module 1, and the positioning pin 20 rotates 45 degrees along the arc groove 102. When the other end is connected to a socket module 1, it is rotated 45 degrees relative to the socket module 1. The square socket modules 1 connected at both ends of the plug module 2 are completely aligned to achieve standardized and modular connection.

[0033] In this embodiment, the plug magnetic block 22 and the socket magnetic block 11 are both embedded, the surface of the plug magnetic block 22 is flush with the circular end surface of the plug module 2, and the surface of the socket magnetic block 11 is flush with the circular bottom surface of the circular groove 10.

[0034] The socket module 1 and the plug module 2 are made of non-magnetic materials and have an insulating layer on the surface; connection contacts for electrical connection are respectively provided on the circular bottom surface of the circular groove 10 in the socket module 1 and the circular end surface of the plug module 2. It can be applied to the technical field of electrical connection plugs, and the plug magnetic block 22 and the socket magnetic block 11 can be made of neodymium iron boron permanent magnetic material, which has excellent magnetic properties and can realize the miniaturization and micro-miniaturization design of the device.

[0035] In this embodiment, the positioning pin 20 is square and has an arc chamfer, and the positioning groove 101 and the arc groove 102 are both square cross-sections. This structural design can be accurately positioned, and is conducive to the adaptive rotation connection of the device, and the installation and removal operations are smooth.

[0036] Implementation process: Figures 1 to 3 As shown, the specific steps of the locking connection method of the modular magnetic adaptive rotating locking connection device are as follows: A. Insertion: Align the positioning pin 20 of the plug module 2 with the positioning groove 101 of the socket module 1, and insert it into the socket module 1 through the circular tenon groove 10. Figure 1 , 9 As shown; B. Adaptive rotation: The plug module 2 is inserted into the bottom end of the circular mortise groove 10, and the positioning pin 20 of the plug module 2 enters the cavity of the arc groove 102. The two plug magnetic blocks 22 on the same end face of the plug module 2 are staggered and do not overlap between the corresponding pair of two socket magnetic blocks 11. At this time, the magnetic pole direction of each plug magnetic block 22 is the same as the socket magnetic block 11 adjacent to it on one side, and the magnetic pole direction of each plug magnetic block 22 is different from the socket magnetic block 11 adjacent to it on the other side. Figure 5 , Fig.10 As shown, under the force of mutual repulsion between like poles and mutual attraction between opposite poles, a rotation torque is formed on the plug module 2, and the positioning pin 20 rotates along the axial direction of the plug module 2 in the arc groove 102, as shown in FIG. Figure 6 As shown; C. Precise positioning and locking: After the positioning pin 20 rotates to the end of the arc groove 102, the plug module 2 stops rotating, and the inner wall of the rotating groove 102 simultaneously forms a rotation angle and axial limit for the positioning pin 20. The arc groove 102 limits the physical structure of the connection of the plug module 2. Each pair of two plug magnetic blocks 22 of the plug module 2 are aligned and overlapped with the corresponding pair of socket magnetic blocks 11 with different magnetic poles, and then adsorbed and fitted, so that the circular end surface of the plug module 2 fits with the circular bottom surface of the circular tenon groove 10. The plug module 2 is axially magnetically positioned again by the magnetic adsorption force of the plug magnetic block 22 and the socket magnetic block 11, as shown in FIG. Figure 7 , Fig.11 As shown, the connection between the socket module 1 and the plug module 2 is precisely positioned and locked.

[0037] Among them, in step C, the plug magnetic block 22 and the socket magnetic block 11 of this embodiment are both embedded, and the surface of the plug magnetic block 22 is flush with the circular end surface of the plug module 2, and the surface of the socket magnetic block 11 is flush with the circular bottom surface of the circular tenon groove 10. After the plug module 2 is axially magnetically positioned again by the magnetic attraction force of the plug magnetic block 22 and the socket magnetic block 11, the circular end surface of the plug module 2 is fitted with the circular bottom surface of the circular tenon groove 10, and the tolerance gap between the components is eliminated after fitting, so that the positioning accuracy of the plug module 2 after connecting with the socket module 1 is greatly improved.

[0038] See also Figures 1 to 3 The other end of the plug module 2 can be connected to another socket module 1 by repeating the above steps A to C; wherein, in step B, the plug module 2 connected to the first socket module 1 has been magnetically positioned and fixed and no longer rotates, and after the other end thereof is plugged into the second socket module 1, the positioning pin 20 is in the arc groove 102 of the second socket module 1, and the plug magnetic block 22 and the socket magnetic block 11 form a rotational torque on the second socket module 1, and the second socket module 1 is axially rotated and connected and positioned.

[0039] Furthermore, the socket module 1 may be provided with more circular tenons 10 for connecting the plug modules 2 and their corresponding positioning grooves 101, arc grooves 102 and socket magnetic blocks 11, and the series connection of the socket modules 1 can be realized through multiple plug modules 2. Multiple socket modules 1 can also be connected in multiple directions, that is, modular connection can be performed according to the needs of actual application scenarios.

[0040] Disassembly method: Use external force to rotate the positioning pin 20 of the plug module 2 along the arc-shaped slot 102 to overcome the magnetic force and rotate it in the opposite direction until the positioning pin 20 is aligned with the positioning slot 101, and then pull out the plug module 2 along the positioning slot 101 to complete the disassembly and separation of the device.

Claims

1. A modular magnetic adaptive rotation locking connection device, comprising a socket module (1) and a cylindrical plug module (2), characterized in that: The socket module (1) is provided with a circular mortise and tenon groove (10) for connecting to the plug module (2); a protruding positioning pin (20) is provided on the outer wall of the end of the plug module (2); the circular mortise and tenon groove (10) is provided with a positioning groove (101) matching the positioning pin (20); an arc groove (102) for accommodating the positioning pin (20) to rotate along the axis of the plug module (2) is provided in the socket module (1) at the bottom of the circular mortise and tenon groove (10); the arc groove (102) is provided along the outer circumference of the circular bottom surface of the circular mortise and tenon groove (10); At least one pair of plug magnetic blocks (22) is provided on the circular end surface of the plug module (2), the paired plug magnetic blocks (22) are arranged along the circumference of the circular end surface of the plug module (2), the magnetic pole directions of the two plug magnetic blocks (22) in the same pair are different, and the circular bottom surface of the circular groove (10) is also correspondingly provided with at least one pair of socket magnetic blocks (11) arranged along the circumference, the magnetic pole directions of the two socket magnetic blocks (11) in the same pair are different; When the positioning pin (20) of the plug module (2) is aligned with the positioning groove (101) of the socket module (1), the two plug magnetic blocks (22) of the same pair are arranged in a staggered manner along the axial projection of the plug module (2) and the corresponding pair of two socket magnetic blocks (11), and the magnetic pole direction of each plug magnetic block (22) is the same as that of the socket magnetic block (11) adjacent to it on one side, and is different from the magnetic pole direction of the socket magnetic block (11) adjacent to it on the other side.

2. A modular magnetic adaptive rotation locking connection device according to claim 1, characterized in that: The plug module (2) is inserted into the socket module (1) via the circular tenon groove (10) and the through-length positioning groove (101), and rotates along the axial direction of the plug module (2) in the arc groove (102) via the positioning pin (20) under the action of magnetic force, so that the plug magnetic block (22) and the socket magnetic block (11) with different magnetic poles overlap and are magnetically positioned, thereby locking and connecting the socket module (1) and the plug module (2).

3. A modular magnetic adaptive rotation locking connection device according to claim 1, characterized in that: Both ends of the plug module (2) are provided with positioning pins (20) and plug magnetic blocks (22), and the socket module (1) is provided with a plurality of circular tenons (10) for connecting the plug module (2) and corresponding positioning grooves (101), arc grooves (102) and socket magnetic blocks (11).

4. A modular magnetic adaptive rotation locking connection device according to claim 3, characterized in that: The positioning pins (20) at the two ends of the plug module (2) are arranged in a staggered manner along the axial direction, and the central angle formed between the positioning pins (20) at the two ends along the axial direction is twice the central angle of the arc-shaped groove (102).

5. A modular magnetic adaptive rotation locking connection device according to claim 3, characterized in that: The socket module (1) is in the shape of a cube, and at least two of its six faces are provided with a circular tenon groove (10) for connecting the plug module (2) and its corresponding positioning groove (101), arc groove (102) and socket magnetic block (11), and the arc grooves (102) on the opposite faces are arranged in a bilaterally symmetrical manner.

6. A modular magnetic adaptive rotation locking connection device according to claim 1, characterized in that: The plug magnetic block (22) and the socket magnetic block (11) have the same shape and size. When the positioning pin (20) of the plug module (2) is aligned with the positioning groove (101) of the socket module (1), the two plug magnetic blocks (22) in the same pair are arranged in a staggered and non-overlapping manner along the axial projection of the plug module (2) and the two socket magnetic blocks (11) in the corresponding pair. The center angle formed between the centers of each pair of two plug magnetic blocks (22) is the same as the center angle formed between the centers of each pair of two socket magnetic blocks (11), and the center angle is twice the center angle of the arc groove (102).

7. A modular magnetic adaptive rotation locking connection device according to claim 1, characterized in that: The plug magnetic block (22) and the socket magnetic block (11) are both embedded, the surface of the plug magnetic block (22) is flush with the circular end surface of the plug module (2), and the surface of the socket magnetic block (11) is flush with the circular bottom surface of the circular tongue and groove (10).

8. A modular magnetic adaptive rotation locking connection device according to claim 7, characterized in that: The socket module (1) and the plug module (2) are made of non-magnetic material and have an insulating layer on their surfaces; connection contacts for electrical connection are respectively provided on the circular bottom surface of the circular tongue and groove (10) in the socket module (1) and on the circular end surface of the plug module (2).

9. A modular magnetic adaptive rotation locking connection device according to any one of claims 1 to 8, characterized in that: The specific steps of the device lock connection method are as follows: A. Insertion: align the positioning pin (20) of the plug module (2) with the positioning groove (101) of the socket module (1), and insert the plug module (2) into the socket module (1) through the circular tenon groove (10); B. Adaptive rotation: the plug module (2) is inserted into the bottom end of the circular mortise and tenon groove (10), the positioning pin (20) of the plug module (2) enters the cavity of the arc groove (102), and the two plug magnetic blocks (22) on the same end face of the plug module (2) are staggered and do not overlap between the corresponding pair of two socket magnetic blocks (11). At this time, the magnetic pole direction of each plug magnetic block (22) is the same as the socket magnetic block (11) adjacent to it on one side, and the magnetic pole direction of each plug magnetic block (22) is different from the socket magnetic block (11) adjacent to it on the other side. Under the action of the mutual repulsion of the same magnetic poles and the mutual attraction of the opposite magnetic poles, a rotational torque is generated on the plug module (2), and the positioning pin (20) rotates in the arc groove (102) along the axial direction of the plug module (2); C. Precise positioning and locking: After the positioning pin (20) rotates to the end of the arc groove (102), the plug module (2) stops rotating, and the inner wall of the rotating groove (102) simultaneously forms a rotation angle and axial limit for the positioning pin (20). The arc groove (102) limits the physical structure of the connection of the plug module (2). Each pair of two plug magnetic blocks (22) of the plug module (2) is aligned with and overlapped with the corresponding pair of socket magnetic blocks (11) with different magnetic poles, and then adsorbed and fitted. The plug module (2) is axially magnetically positioned again by the magnetic adsorption force of the plug magnetic block (22) and the socket magnetic block (11), so as to accurately position and lock the connection between the socket module (1) and the plug module (2).

10. A modular magnetic adaptive rotation locking connection device according to claim 9, characterized in that: The socket module (1) is provided with a plurality of circular tenons (10) and corresponding positioning grooves (101), arc grooves (102) and socket magnetic blocks (11) for connecting to the plug module (2); positioning pins (20) and plug magnetic blocks (22) are provided at both ends of the plug module (2); the other end of the plug module (2) can be connected to another socket module (1) by repeating the above steps A to C; or multiple socket modules (1) can be connected via multiple plug modules (2).

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