A magnetic rotary coupling connector assembly and method of connecting the same

Abstract

This invention discloses a magnetic rotary coupling connector assembly and its connection method. The plug module of this invention is provided with a positioning pin at its end, and the matching socket module has a circular tenon groove with a positioning groove matching the positioning pin and an arc-shaped groove for rotational positioning. The embedded plug magnetic block and socket magnetic block design are adopted. Under the action of magnetic rotary coupling force, the rotational torque formed on the plug module is used to achieve adaptive rotational coupling positioning of the connector through magnetic force, so as to complete the precise electrical contact connection and achieve reliable locking connection through mechanical locking block.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a magnetic rotary coupling connector assembly and its connection method. Background Technology

[0002] Connectors are widely used in automotive, electronics, medical devices, aerospace, new energy, automation, and household technology fields. Currently, existing connectors commonly use tenon and mortise joints and employ mechanical structures such as elastic components and bolts to reinforce the connection. However, the mechanical lifespan of elastic components is limited, and the insertion and extraction forces require manual control, resulting in unsatisfactory durability and reliability. Furthermore, connection reliability is affected by human operation factors. Threaded connections are relatively reliable, but their connection and disassembly operations are cumbersome. There are also connectors that use direct-insertion magnetic connection methods, but these pose a risk of detachment, and their reliability and safety are not ideal. Further reinforced connection structures are still needed. Some connectors also add a separate bolt locking device, which makes the structure relatively complex and the installation and disassembly operations more cumbersome.

[0003] Secondly, existing household appliance socket connectors require alignment with the socket and application of external force for connection, and the insertion process also poses a risk of electric shock, failing to achieve fast, reliable, and safe connection. Summary of the Invention

[0004] To overcome the problems existing in the background art, the present invention provides a magnetic rotary coupling connector assembly and its connection method.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a magnetic rotary coupling connector assembly, including a socket module and a plug module. The plug module is provided with a circular tenon, and a protruding positioning pin is provided on the outer wall of the front end of the circular tenon. The socket module is provided with a circular tenon groove that adapts to the circular tenon. The circular tenon groove has a positioning groove that adapts to the positioning pin. An arc-shaped groove for accommodating the positioning pin to rotate along the axial direction of the circular tenon groove is provided in the socket module at the bottom of the circular tenon groove. The arc-shaped groove is opened along the outer circumference of the circular bottom surface of the circular tenon groove, and one end of the arc-shaped groove is connected to the positioning groove. At least one embedded plug magnet is arranged around the axis on the bottom end face of the circular tenon, and a corresponding embedded socket magnet is arranged around the axis on the end face of the circular tenon, wherein the magnetic pole directions of the plug magnet and its corresponding socket magnet are opposite. When the positioning pin is aligned with the positioning groove of the socket module, the plug magnetic block is staggered with its corresponding socket magnetic block along the axial projection of the circular tenon groove. At this time, along the axial direction of the circular tenon groove, the central angle formed between the geometric center of each plug magnetic block and the geometric center of its corresponding socket magnetic block is the same as the central angle of the arc groove. The socket module has a socket electrode in its circular tenon groove, and the plug module has a plug electrode. The plug module also includes a screw cap, an electrode locking mechanism, and a mechanical locking structure, wherein the screw cap is movably connected to the electrode locking mechanism and the mechanical locking structure.

[0006] Furthermore, when there are multiple plug magnets, they are arranged circumferentially around the central axis of the circular tenon; when there are multiple socket magnets, they are arranged circumferentially around the central axis of the circular tenon.

[0007] Furthermore, the socket electrode includes a socket ground electrode disposed at the center of the bottom surface of the circular tenon groove, a socket neutral electrode and a socket live electrode disposed around the socket ground electrode; the conductive contact surfaces of the socket neutral electrode and the socket live electrode are located on the side. The plug electrode includes a plug neutral electrode, a plug live electrode, and a plug ground electrode located at the center of the circular tenon; the conductive contact surfaces of the rotating plug neutral electrode and plug live electrode are located on the side. Inside the circular screw cap, there are strip-shaped neutral wire slots, live wire slots, and mechanical locking slots arranged around the center. The electrode locking mechanism includes a neutral wire lever and a live wire lever arranged around the grounding electrode of the plug. The upper end of the rotatable neutral wire lever is provided with a neutral wire fork that can be accommodated in the neutral wire slot, and the lower end is connected to the neutral wire electrode of the plug. The upper end of the rotatable live wire lever is provided with a live wire fork that can be accommodated in the live wire slot, and the lower end is connected to the live wire electrode of the plug. The mechanical locking structure includes a mechanical locking lever, a mechanical locking block, and a mechanical locking fork. The lower end of the rotatable mechanical locking lever is connected to the mechanical locking block, and the upper end is provided with a mechanical locking fork that is accommodated in the mechanical locking groove. A lock hole is provided on the outer wall of the circular tenon for the mechanical locking block to extend and retract to lock and unlock the plug module.

[0008] Furthermore, along the axial direction of the circular tenon, the central angle formed between the geometric center of the lock hole and the geometric center of the positioning pin is the same as the central angle of the arc groove; The neutral wire slot used for separating and joining the neutral wire electrode of the rotary linkage plug and the neutral wire electrode of the socket has the same shape as the live wire slot used for separating and joining the live wire electrode of the rotary linkage plug and the live wire electrode of the socket. The length of the mechanical locking slot is greater than the length of the neutral wire slot and the live wire slot.

[0009] More preferably, the neutral wire slot, the live wire slot, and the mechanical locking slot are arc-shaped strips, with the neutral wire slot and the live wire slot having the same strip length; the mechanical locking slot has a strip length greater than the neutral wire slot and the live wire slot.

[0010] Furthermore, the neutral wire lever and the live wire lever are symmetrically arranged around the center of the circular tenon.

[0011] Furthermore, the grounding electrode of the plug also serves as the central rotation axis of the screw cap; a positioning plate for stabilizing rotation and positioning is also connected between the neutral wire lever, the live wire lever, and the mechanical locking lever.

[0012] Furthermore, the socket module has an elastic telescopic shielding component in its circular tenon for shielding and protecting the socket's neutral and live wire electrodes. The elastic telescopic shielding component includes a lateral shielding block, a top cover, and a shielding spring fitted onto the socket's grounding electrode. The lateral shielding block is fitted onto the socket's grounding electrode and is respectively attached to the conductive contact surfaces on the sides of the socket's neutral and live wire electrodes. The top cover is fitted onto the socket's grounding electrode and is mounted on the lateral shielding block. An annular pressure block for linkage with the lateral shielding block is provided at the bottom center of the circular tenon.

[0013] Furthermore, the circular tenon is provided with a radial spring for pressing the neutral wire electrode and the live wire electrode of the plug, and the screw cap is provided with a radial spring lever for rotating and actuating the radial spring.

[0014] Furthermore, the surface of the plug magnetic block is flush with the end face of the circular tenon, the surface of the socket magnetic block is flush with the bottom surface of the circular tenon, and the surface shape of each plug magnetic block is the same as the surface shape of its corresponding socket magnetic block. Furthermore, both the positioning pin and the positioning groove have arc-shaped cross-sections.

[0015] Furthermore, the plug magnet and socket magnet are made of neodymium iron boron material.

[0016] Furthermore, the socket ground electrode, socket neutral electrode, socket live electrode, plug ground electrode, plug neutral electrode, and plug live electrode are each electrically connected to a cable.

[0017] This invention further discloses a connection method for a magnetic rotary coupling connector assembly, the specific steps of which are as follows: Step A, Insertion: Align the positioning pin on the circular tenon of the plug module with the positioning groove of the socket module, and insert it into the socket module along the circular tenon and positioning groove. After the circular tenon is fully inserted into the circular tenon, the positioning pin reaches the end position where the positioning groove and the arc groove connect. The plug grounding electrode set at the center of the circular tenon is electrically connected to the socket grounding electrode set at the center of the circular tenon. The axial projection of the plug magnet along the circular tenon and its corresponding socket magnet are staggered. Step B, Adaptive Rotation Positioning: After the circular tenon is fully inserted into the circular tenon groove, under the magnetic force of the plug magnet and the socket magnet with opposite magnetic pole directions, the circular tenon of the plug module rotates in the circular tenon groove in the forward direction. The positioning pin rotates in the forward direction in the arc groove to the other end of the arc groove and is then structurally positioned. At the same time, the plug magnet and the socket magnet with opposite magnetic poles are magnetically coupled and positioned by mutual adaptive magnetic force. The plug neutral wire electrode and plug live wire electrode also rotate to their corresponding socket neutral wire electrode and socket live wire electrode positions; the lock hole also rotates to its corresponding position in the positioning groove. Step C, Tightening Connection of the Screw Cap: After the positioning restriction in Step A, the circular tenon of the plug module can no longer rotate forward in the circular tenon groove. Manually rotate the screw cap forward along the direction of the positioning groove extending towards the arc groove. The neutral wire slot, live wire slot, and mechanical locking slot on the screw cap will respectively move the neutral wire fork, live wire fork, and mechanical locking fork, which will respectively drive the neutral wire lever, live wire lever, and mechanical locking lever to rotate forward. The mechanical locking lever rotates, causing the lower mechanical locking block to extend out of the locking hole and into the positioning groove. The circular tenon of the locking plug module rotates in the opposite direction within the circular tenon groove. The neutral wire lever rotates, causing the lower plug neutral wire electrode to rotate and electrically connect with the socket neutral wire electrode. The live wire lever also rotates synchronously, causing the lower plug live wire electrode to rotate and electrically connect with the socket live wire electrode. The connection of the connector assembly is completed. After the connector assembly is fully connected, the forward rotation stroke of the cap is restricted by the structure and cannot continue to rotate in the forward direction, which can effectively avoid other misoperations.

[0018] The specific steps of the method for separating the connector assembly are as follows: Step a, Unlocking and power-off of the cap: Manually rotate the cap in the reverse direction. The neutral wire slot, live wire slot, and mechanical locking slot of the cap will respectively reverse the neutral wire fork, live wire fork, and mechanical locking fork, which will respectively drive the neutral wire lever, live wire lever, and mechanical locking lever to rotate in the reverse direction. The neutral wire lever rotates in the opposite direction, causing the lower plug neutral wire electrode to disconnect from the socket neutral wire electrode and cut off the power. The live wire lever rotates in the opposite direction, causing the lower plug live wire electrode to disconnect from the socket live wire electrode simultaneously and cut off the power. The mechanical locking lever rotates in the opposite direction, and then causes the lower mechanical locking block to rotate out of the positioning groove and retract into the lock hole, unlocking the rotation of the circular tenon of the plug module in the circular tenon groove. Step b, Separation: Continue to manually rotate the cap in the opposite direction to drive the plug module to rotate in the opposite direction, or directly rotate the plug module body in the opposite direction. The circular tenon of the plug module rotates in the opposite direction in the circular tenon groove, causing the plug magnet to separate from the socket magnet with the opposite magnetic pole direction. After the positioning pin of the circular tenon rotates in the opposite direction in the arc groove to the positioning groove position at the end, pull out the plug module to complete the separation of the connector assembly; the plug grounding electrode and the socket grounding electrode finally disconnect the electrical connection.

[0019] Furthermore, in step A, after the positioning pin of the plug module is aligned with the positioning groove of the socket module and inserted into the socket module, the bottom of the circular tenon is compressed downward by the annular pressure block to press down the blocking spring inside the lateral blocking block, exposing the conductive contact surfaces on the sides of the socket neutral wire electrode and the socket live wire electrode. Furthermore, in step B, after the circular tenon is fully inserted into the circular mortise, the forward rotation of the circular tenon can also be achieved by manually assisting the forward rotation of the plug module, which rotates the positioning pin in the arc groove to the other end of the arc groove to position the structure.

[0020] Furthermore, in step B, after the circular tenon is fully inserted into the circular mortise, the positioning pin reaches the end position where the positioning groove and the arc groove are connected; the reverse rotation of the circular tenon within the circular mortise is restricted; it can only rotate in the forward direction.

[0021] Furthermore, in step b, after the plug module is unplugged, the lateral blocking block pops out to block the conductive contact surfaces on the sides of the socket neutral wire electrode and the socket live wire electrode.

[0022] Furthermore, in step C, the mechanical locking lever rotates to drive the lower mechanical locking block to extend out of the locking hole and into the positioning groove, first locking the rotation of the circular tenon of the plug module; the plug neutral electrode and plug live electrode rotate synchronously to the corresponding socket neutral electrode and socket live electrode positions and are then stopped, thus synchronously completing the electrical connection of the neutral and live wires. That is, the plug neutral wire electrode and plug live wire electrode are stopped by the structure at the end position of the socket neutral wire electrode and socket live wire electrode; only then is the electrical connection completed synchronously. This step realizes the safe and reliable operation of first stabilizing and locking the plug module and then completing the electrical connection, which improves the reliability and safety of the module power-on connection operation.

[0023] In step a, the length of the mechanical locking slot is greater than that of the neutral wire slot and the live wire slot. During the manual reverse rotation of the cap, the mechanical locking slot has a longer free-spinning stroke without linkage. During this free-spinning stroke, the neutral wire slot and the live wire slot are linked to the neutral wire lever and the live wire lever, respectively. The plug's neutral wire electrode and the plug's live wire electrode are first driven to synchronously disconnect from the socket's neutral wire electrode and the socket's live wire electrode. The mechanical locking slot then moves the mechanical locking fork to the linked stroke. The mechanical locking slot, linked to the mechanical locking block, rotates completely out of the positioning slot and retracts into the lock hole, and then the circular tenon of the unlock plug module rotates.

[0024] When the plug's neutral and live wire electrodes are initially driven to rotate synchronously in opposite directions by the neutral and live wire slots, they simultaneously separate from the socket's neutral and live wire electrodes, disconnecting their electrical connection. The mechanical locking slot only unlocks the plug module's circular tenon rotation after it has completely rotated out of the positioning slot and retracted into the locking hole. This achieves power disconnection before unlocking the plug module, greatly improving the reliability and safety of the module's electrical disconnection operation.

[0025] Furthermore, in step C, the mechanical locking lever rotates forward, causing the lower mechanical locking block to extend out of the lock hole and partially rotate into the positioning groove, thus generating a locking effect. Conversely, when the mechanical locking lever rotates in the opposite direction, the mechanical locking lever must completely rotate out of the positioning groove and retract into the lock hole before the circular tenon of the plug module can be unlocked. That is, the connection operation of the connector module realizes locking the plug module first and then completing the electrical connection; the separation operation realizes de-energizing the plug module first and then unlocking the plug module, which greatly improves the reliability and safety of the module's electrical connection and disconnection operations.

[0026] Furthermore, in step C, when the cap is manually rotated in the forward direction, the neutral wire slot, live wire slot, and mechanical locking slot on the cap are all strip-shaped in the initial stage of the forward rotation. In the initial stage of the cap rotation, there is an idle stroke without linkage, and the neutral wire fork, live wire fork, and mechanical locking fork do not move. During this idle stroke, the radial spring block at the bottom of the cap moves the radial spring to deform and bend, resulting in elastic deformation. The rear section of the rotating cap generates a linkage, and the mechanical locking slot, in conjunction with the mechanical locking block, extends out of the locking hole and fully rotates into the positioning groove to lock the plug module. The plug neutral wire electrode and plug live wire electrode rotate synchronously to the end positions of the corresponding socket neutral wire electrode and socket live wire electrode, respectively, and then stop, completing the electrical connection. The radial spring block at the bottom of the cap moves the radial spring, which continues to deform and bend, generating elastic potential energy. The elastic potential energy generated by the bending of the radial spring simultaneously presses the conductive contact surfaces between the plug neutral wire electrode, socket live wire electrode and the corresponding socket neutral wire electrode and socket live wire electrode.

[0027] After the connector assembly is connected, the radial spring bending elasticity dampens the reverse rotation of the cap, preventing accidental disconnection and power loss due to slight contact with the cap connector.

[0028] The beneficial effects of the present invention are as follows: the plug module of the present invention is provided with a positioning pin at its end, and the matching circular tenon groove is provided with a positioning groove matching the positioning pin and an arc-shaped groove for rotation positioning; the embedded plug magnetic block and socket magnetic block design is adopted, and the rotational torque formed on the plug module under external force or magnetic force is used to realize the adaptive rotational coupling positioning of the connector through magnetic force, which can realize the precise connection of electrical contacts in steps, and the reliable locking connection is achieved through mechanical locking blocks.

[0029] This invention employs a unique structural design, such as a mechanical locking groove length greater than the neutral and live wire groove lengths, enabling reliable operation during connection by first stabilizing and locking the plug module before completing the electrical connection; and during disconnection by immediately disconnecting the power before unlocking the plug module. Furthermore, during connection, the grounding electrode is connected first, followed by the neutral and live wires; during disconnection, the neutral and live wires are disconnected, followed by the grounding electrode. This step-by-step connection and disconnection process significantly improves the reliability and safety of electrical connection and disconnection operations.

[0030] This invention employs a unique and innovative structural design. The plug module and its cap achieve reliable structural stop and limit during the forward and reverse rotation steps of the insertion and separation process, effectively avoiding misoperation and supporting blind insertion and removal of the connector. The design conforms to ergonomics and operating habits.

[0031] It adopts a flexible and retractable shielding component design, which can effectively eliminate the safety hazard of electric shock to fingers before the plug module is inserted.

[0032] This device has no bolt-connected parts, eliminating the safety hazards of mechanical fatigue and wear. The components have a long mechanical life, and the connections offer high precision, safety, and reliability. The connection and disassembly methods are simple and reliable, and the special structural design effectively avoids other operational errors. 。 This invention enables blind mating and unmating of connectors, while avoiding the risks of electric shock, short circuits, and accidental removal. It has broad application prospects in the fields of automobiles, electronics, medical devices, aerospace, new energy, automation, and consumer appliances. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the socket module of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the plug module of the present invention; Figure 4This is an exploded view of the plug module of the present invention; Figure 5 This is a top view of the screw cap of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the screw cap of the present invention; Figure 7 This is a schematic diagram of the grounding electrode structure of the plug of the present invention; Figure 8 This is a schematic diagram of the neutral wire lever structure of the present invention; Figure 9 This is a schematic diagram of the fire wire lever structure of the present invention; Figure 10 This is a schematic diagram of the mechanical locking lever structure of the present invention; Figure 11 This is a schematic diagram of the elastic telescopic shielding component of the present invention; Figure 12 This is an explosion diagram of the elastic telescopic shielding component of the present invention.

[0034] Components in the diagram: 1-Socket module; 10-Circular tenon; 11-Socket magnet; 12-Arc groove; 13-Positioning groove; 2-Plug module; 20-Positioning pin; 21-Circular tenon; 22-Plug magnet; 100-Socket ground electrode; 111-Socket neutral electrode; 122-Socket live electrode; 25-Screw cap; 200-Plug ground electrode; 211-Plug neutral electrode; 222-Plug live electrode; 26-Neutral wire slot ; 27-Live wire slot; 35-Mechanical locking slot; 261-Neutral wire lever; 271-Live wire lever; 262-Neutral wire fork; 272-Live wire fork; 30-Mechanical locking lever; 31-Mechanical locking block; 33-Mechanical locking fork; 310-Lock hole; 50-Radial spring; 52-Radial spring block; 51-Positioning piece; 300-Side blocking block; 301-Top cover; 302-Blocking spring; 303-Annular pressure block. Detailed Implementation

[0035] The following embodiments of the present invention further illustrate the invention. It should be noted that these descriptions of embodiments are intended to aid in understanding the invention but do not constitute a limitation thereof. The technical features involved in the various embodiments can be combined with each other as long as they do not conflict with each other.

[0036] General embodiments of the magnetic rotary coupling connector assembly of the present invention, such as Figure 1-12As shown, a magnetic rotary coupling connector assembly includes a socket module 1 and a plug module 2. The plug module 2 has a circular tenon 21, and a protruding positioning pin 20 is provided on the outer wall of the front end of the circular tenon 21. The socket module 1 has a circular tenon 10 adapted to the circular tenon 21. The circular tenon 10 has a positioning groove 13 adapted to the positioning pin 20. An arc-shaped groove 12 for accommodating the positioning pin 20 to rotate along the axial direction of the circular tenon 10 is provided in the socket module 1 at the bottom of the circular tenon 10. The arc-shaped groove 12 is opened along the outer circumference of the circular bottom surface of the circular tenon 10, and one end of the arc-shaped groove 12 is connected to the positioning groove 13. At least one embedded plug magnet 22 is arranged around the axis on the bottom end face of the circular tenon 21, and an embedded socket magnet 11 corresponding to each plug magnet 22 is arranged around the axis on the end face of the circular tenon 10. The magnetic pole directions of the plug magnet 22 and its corresponding socket magnet 11 are opposite. When the positioning pin 20 is aligned with the positioning groove 13 of the socket module 1, the plug magnet 22 is staggered with its corresponding socket magnet 11 along the axial projection of the circular tenon groove 10. At this time, along the axial direction of the circular tenon groove 10, the central angle formed between the geometric center of each plug magnet 22 and the geometric center of its corresponding socket magnet 11 is the same as the central angle of the arc groove 12. The socket module 1 has a socket electrode in the circular tenon 10, and the plug module 2 has a plug electrode. The plug module 2 also includes a screw cap 25, an electrode tightening mechanism, and a mechanical locking structure, wherein the screw cap 25 is movably connected to the electrode tightening mechanism and the mechanical locking structure.

[0037] like Figure 2 As shown, the positioning groove 13 along the axial direction of the circular tenon 10 is connected to one end of the arc-shaped groove 12 in the circumferential direction.

[0038] like Figure 2 , 3 As shown, when there are multiple plug magnets 22, they are arranged around the central axis of the circular tenon 21 along the circumference; when there are multiple socket magnets 11, they are arranged around the central axis of the circular tenon 10 along the circumference. In this embodiment, there are two plug magnets 22 and two socket magnets 11.

[0039] like Figure 4-10 As shown, the socket electrode includes a socket ground electrode 100 disposed at the center of the bottom surface of the circular tenon 10, a socket neutral electrode 111 and a socket live electrode 122 disposed around the socket ground electrode 100; the conductive contact surfaces of the socket neutral electrode 111 and the socket live electrode 122 are located on the side. The plug electrode includes a plug neutral electrode 211, a plug live electrode 222, and a plug ground electrode 200 disposed at the center of the circular tenon 21; the conductive contact surfaces of the rotatable plug neutral electrode 211 and plug live electrode 222 are located on the side. Inside the circular screw cap 25, there are strip-shaped neutral wire slots 26, live wire slots 27, and mechanical locking slots 35 around the center; in this embodiment, the strips are arc-shaped.

[0040] The electrode locking mechanism includes a neutral wire lever 261 and a live wire lever 271 arranged around the plug grounding electrode 200. The rotatable neutral wire lever 261 has a neutral wire fork 262 that is accommodated in the neutral wire slot 26 at its upper end and is connected to the plug neutral wire electrode 211 at its lower end. The rotatable live wire lever 271 has a live wire fork 272 that is accommodated in the live wire slot 27 at its upper end and is connected to the plug live wire electrode 222 at its lower end. The mechanical locking structure includes a mechanical locking lever 30, a mechanical locking block 31, and a mechanical locking fork 33. The rotatable mechanical locking lever 30 is connected to the mechanical locking block 31 at its lower end and has a mechanical locking fork 33 at its upper end that is accommodated in a mechanical locking groove 35. A lock hole 310 is provided on the outer wall of the circular tenon 21 for the mechanical locking block 31 to extend and retract to lock and unlock the plug module 2.

[0041] like Figure 4 As shown, the neutral wire lever 261 and the live wire lever 271 are wrapped with insulating material, and their bodies are used as conductors for electrodes.

[0042] like Figure 2 , 3 As shown in Figure 5, along the axial direction of the circular tenon 21, the central angle formed between the geometric center of the lock hole 310 and the geometric center of the positioning pin 20 is the same as the central angle of the arc groove 12. The neutral wire slot 26 used for separating and joining the neutral wire electrode 211 of the rotary linkage plug and the neutral wire electrode 111 of the socket has the same shape as the live wire slot 27 used for separating and joining the live wire electrode 222 of the rotary linkage plug and the live wire electrode 122 of the socket. like Figure 5 As shown, the length of the mechanical locking slot 35 is greater than the lengths of the neutral wire slot 26 and the live wire slot 27. In this embodiment, the neutral wire slot 26, the live wire slot 27, and the mechanical locking slot 35 are arc-shaped slots.

[0043] like Figure 5 As shown, in this embodiment, the neutral wire lever 261 and the live wire lever 271 are symmetrically arranged around the center of the circular tenon 21.

[0044] like Figure 5As shown, in this embodiment, the plug grounding electrode 200 also serves as the central rotation axis of the cap 25; a positioning piece 51 for stabilizing rotation and positioning is also connected between the neutral wire lever 261, the live wire lever 271, and the mechanical locking lever 30.

[0045] like Figure 2 , 11 As shown in Figure 12, the circular tenon 10 of the socket module 1 is provided with an elastic telescopic shielding component for shielding and protecting the socket neutral electrode 111 and the socket live electrode 122. The elastic telescopic shielding component includes a lateral shielding block 300, a top cover 301, and a shielding spring 302 sleeved on the socket grounding electrode 100. The lateral shielding block 300 is sleeved on the socket grounding electrode 100 and is respectively attached to the conductive contact surfaces on the sides of the socket neutral electrode 111 and the socket live electrode 122. The top cover 301 is sleeved on the socket grounding electrode 100 and installed on the lateral shielding block 300. The bottom center of the circular tenon 21 is provided with an annular pressure block 303 for linkage with the lateral shielding block 300.

[0046] like Figure 4 , 5 As shown, the circular tenon 21 is provided with a radial spring 50 for pressing the plug neutral wire electrode 211 and the plug live wire electrode 222, and the screw cap 25 is provided with a radial spring lever 52 for rotating and actuating the radial spring 50.

[0047] like Figure 2 , 3 As shown, the surface of the plug magnet 22 is flush with the end face of the circular tenon 21, the surface of the socket magnet 11 is flush with the bottom surface of the circular tenon 10, and the surface shape of each plug magnet 22 is the same as the surface shape of its corresponding socket magnet 11; the cross-sections of the positioning pin 20 and the positioning groove 13 are both arc-shaped.

[0048] The socket ground electrode 100, socket neutral electrode 111, socket live electrode 122, plug ground electrode 200, plug neutral electrode 211, and plug live electrode 222 are also electrically connected to cables.

[0049] In Embodiment 1 of the magnetic rotary coupling connector assembly of the present invention, the direction of extension along the positioning groove 13 to the arc-shaped groove 12 is the positive rotation direction, as shown below. Figure 1-12 As shown, the specific steps of its connection method are as follows: Step A, Insertion: Align the positioning pin 20 on the circular tenon 21 of the plug module 2 with the positioning groove 13 of the socket module 1, and insert it into the socket module 1 along the circular tenon 10 and the positioning groove 13. After the circular tenon 21 is fully inserted into the circular tenon 10, the positioning pin 20 reaches the end position where the positioning groove 13 connects with the arc groove 12. The plug grounding electrode 200 located at the center of the circular tenon 21 is electrically connected to the socket grounding electrode 100 located at the center of the circular tenon 10. The axial projection of the plug magnet 22 along the circular tenon 10 is staggered with its corresponding socket magnet 11. Step B, Adaptive Rotation Positioning: After the circular tenon 21 is fully inserted into the circular tenon groove 10, under the magnetic force of the plug magnet 22 and the socket magnet 11 with opposite magnetic pole directions, the circular tenon 21 of the plug module 2 rotates in the circular tenon groove 10 in the forward direction. The positioning pin 20 rotates in the forward direction in the arc groove 12 to the other end of the arc groove 12 and is then structurally positioned. At the same time, the plug magnet 22 and the socket magnet 11 with opposite magnetic poles are magnetically coupled and positioned by mutual adaptive magnetic force. The plug neutral electrode 211 and plug live electrode 222 are also rotated to their corresponding socket neutral electrode 111 and socket live electrode 122 positions; the lock hole 310 is also rotated to its corresponding position in the positioning groove 13. Step C, Tightening Connection of the Screw Cap: After the positioning restriction in Step A, the circular tenon 21 of the plug module 2 can no longer rotate forward in the circular tenon groove 10. Manually rotate the screw cap 25 forward along the direction of the positioning groove 13 towards the arc groove 12. The neutral wire slot 26, the live wire slot 27, and the mechanical locking slot 35 on the screw cap 25 will respectively move the neutral wire fork 262, the live wire fork 272, and the mechanical locking fork 33, which will respectively drive the neutral wire lever 261, the live wire lever 271, and the mechanical locking lever 30 to rotate forward. The mechanical locking lever 30 rotates, causing the lower mechanical locking block 31 to extend out of the locking hole 310 and rotate into the positioning groove 13. The circular tenon 21 of the locking plug module 2 rotates in the opposite direction within the circular tenon groove 10. The neutral wire lever 261 rotates, causing the lower plug neutral wire electrode 211 to rotate and electrically connect with the socket neutral wire electrode 111. The live wire lever 271 also rotates synchronously, causing the lower plug live wire electrode 222 to rotate and electrically connect with the socket live wire electrode 122. The connection of the connector assembly is completed. After the connector assembly is fully connected, the forward rotation stroke of the cap 25 is restricted by the structure and the forward rotation stops.

[0050] In step A, after the positioning pin 20 of the plug module 2 is aligned with the positioning groove 13 of the socket module 1 and inserted into the socket module 1, the bottom of the circular tenon 21 is compressed downward by the annular pressure block 303 to the blocking spring 302 inside the lateral blocking block 300, thus pressing down the lateral blocking block 300 and exposing the conductive contact surfaces on the sides of the socket neutral electrode 111 and the socket live electrode 122; thus releasing the shielding protection of the electrodes.

[0051] In step B, after the circular tenon 21 is fully inserted into the circular mortise 10, the forward rotation of the circular tenon 21 can also be achieved by manually assisting the forward rotation of the plug module 2, which rotates the positioning pin 20 in the arc groove 12 to the other end of the arc groove 12 for structural positioning.

[0052] In step B, after the circular tenon 21 is fully inserted into the circular mortise 10, when the positioning pin 20 reaches the end position where the positioning groove 13 connects with the arc groove 12, the reverse rotation of the circular tenon 21 within the circular mortise 10 is restricted; it can only rotate in the forward direction.

[0053] In step C, the mechanical locking lever 30 rotates, causing the lower mechanical locking block 31 to extend out of the locking hole 310 and rotate into the positioning groove 13, first locking the rotation of the circular tenon 21 of the plug module 2; the plug neutral electrode 211 and plug live electrode 222 rotate synchronously to the corresponding socket neutral electrode 111 and socket live electrode 122 positions respectively and are then stopped, thus synchronously completing the electrical connection of the neutral and live wires respectively; That is, the plug neutral electrode 211 and plug live electrode 222 are stopped by the structure at the end position of the socket neutral electrode 111 and socket live electrode 122 before the electrical connection is completed synchronously. This step realizes the safe and reliable operation of first stabilizing and locking the rotation of the plug module 2 and then completing the electrical connection, which improves the reliability and safety of the module's power-on connection operation.

[0054] In step C, the cap 25 is manually rotated in the forward direction. The neutral wire slot 26, live wire slot 27, and mechanical locking slot 35 on the cap 25 are all strip-shaped. In the first part of the rotation of the cap 25, there is an idle stroke without linkage. The neutral wire fork 262, live wire fork 272, and mechanical locking fork 33 do not move. During this idle stroke, the radial spring block 52 at the bottom of the cap 25 moves the radial spring 50 to deform and bend, resulting in elastic deformation. In the later stage of the rotation of the cover 25, a linkage is generated, and the mechanical locking groove 35 is linked with the mechanical locking block 31 to extend out of the locking hole 310 and completely rotate into the positioning groove 13 to lock the plug module 2. The plug neutral electrode 211 and plug live electrode 222 rotate synchronously to the end position of the corresponding socket neutral electrode 111 and socket live electrode 122, respectively, and then stop, completing the electrical connection. The radial spring block 52 at the bottom of the cover 25 moves the radial spring 50 to continue to deform and bend to generate elastic potential energy. The elastic potential energy generated by the bending of the radial spring 50 simultaneously presses the conductive contact surfaces between the plug neutral electrode 211, socket live electrode 122 and the corresponding socket neutral electrode 111 and socket live electrode 122.

[0055] Its technical effect is to achieve a safe and reliable operation process of first locking the rotation of the plug module 2 and then completing the electrical connection; and to greatly reduce the occurrence of electrical arcing.

[0056] After the connector assembly is connected, the radial spring 50's bending elasticity dampens the reverse rotation of the cap 25, preventing accidental disconnection and power loss caused by slight contact with the cap 25 connector.

[0057] Embodiment 2 of the magnetic rotary coupling connector assembly of the present invention, as follows: Figure 1-12 As shown, in this embodiment, the direction of extension from the positioning groove 13 to the arc-shaped groove 12 is the positive rotation direction. The specific steps of the separation method for the connector assembly are as follows: Step a, Unlocking and power-off of the cap: Manually rotate the cap 25 in the reverse direction. The neutral wire slot 26, the live wire slot 27, and the mechanical locking slot 35 of the cap 25 will respectively reverse the neutral wire fork (262), the live wire fork 272, and the mechanical locking fork 33, thereby driving the neutral wire lever 261, the live wire lever 271, and the mechanical locking lever 30 to rotate in the reverse direction. The neutral wire lever 261 rotates in the opposite direction, causing the lower plug neutral wire electrode 211 to disconnect from the socket neutral wire electrode 111 and cut off the power. The live wire lever 271 rotates in the opposite direction, causing the lower plug live wire electrode 222 to disconnect from the socket live wire electrode 122 and cut off the power simultaneously. The mechanical locking lever 30 rotates in the opposite direction, and then causes the lower mechanical locking block 31 to rotate out of the positioning groove 13 and retract into the lock hole 310, unlocking the rotation of the circular tenon 21 of the plug module 2 in the circular tenon groove 10. Step b, Separation: Continue to manually rotate the cap 25 in the opposite direction to drive the plug module 2 to rotate in the opposite direction, or directly rotate the plug module 2 body in the opposite direction. The circular tenon 21 of the plug module 2 rotates in the opposite direction within the circular tenon groove 10, causing the plug magnet 22 to disengage from the corresponding socket magnet 11 with opposite magnetic pole directions. After the positioning pin 20 of the circular tenon 21 rotates in the opposite direction within the arc groove 12 to the position of the positioning groove 13 at the end, the plug module 2 is pulled out to complete the separation of the connector assembly; the plug grounding electrode 200 and the socket grounding electrode 100 finally disconnect the electrical connection.

[0058] In step a, the length of the mechanical locking groove 35 is greater than that of the neutral wire groove 26 and the live wire groove 27. During the manual reverse rotation of the cap 25, the mechanical locking groove 35 has a longer free-spinning stroke without linkage. During this free-spinning stroke, the neutral wire groove 26 and the live wire groove 27 are linked with the neutral wire lever 261 and the live wire lever 271, respectively. The plug neutral wire electrode 211 and the plug live wire electrode 222 are first driven to synchronously disconnect from the electrical connection with the socket neutral wire electrode 111 and the socket live wire electrode 122. The mechanical locking groove 35 then moves the mechanical locking fork 33 in a linked stroke. The mechanical locking groove 35 and the mechanical locking block 31 are completely rotated out of the positioning groove 13 and retracted into the lock hole 310 before the circular tenon 21 of the plug module 2 is unlocked.

[0059] The achieved technical effect is that the power is cut off first during the module component separation process, and then the rotation of plug module 2 is unlocked, which improves the reliability and safety of electrical disconnection.

[0060] In step b, after the plug module 2 is pulled out, the lateral shielding block 300 pops out to shield and protect the conductive contact surfaces on the sides of the socket neutral electrode 111 and the socket live electrode 122, which can effectively avoid the risk of electric shock.

[0061] This invention employs a unique and innovative structural design. The plug module 2 and its screw cap 25 achieve reliable structural stop limit and damping control during forward and reverse rotation in the plug connection and disconnection process, effectively avoiding misoperation and conforming to ergonomics and operating habits.

Claims

1. A magnetic rotary coupling connector assembly, comprising a socket module (1) and a plug module (2), characterized in that, The plug module (2) is provided with a circular tenon (21), and a protruding positioning pin (20) is provided on the outer wall of the front end of the circular tenon (21). The socket module (1) is provided with a circular tenon (10) adapted to the circular tenon (21). The circular tenon (10) is provided with a positioning groove (13) adapted to the positioning pin (20). An arc groove (12) for accommodating the positioning pin (20) to rotate along the axial direction of the circular tenon (10) is provided in the socket module (1) at the bottom of the circular tenon (10). The arc groove (12) is provided along the outer circumference of the circular bottom surface of the circular tenon (10). One end of the arc groove (12) is connected to the positioning groove (13). At least one embedded plug magnet (22) is provided around the axis on the bottom end face of the circular tenon (21), and a socket magnet (11) is provided around the axis on the end face of the circular tenon (10), corresponding to each plug magnet (22), with the magnetic pole directions of the plug magnet (22) and its corresponding socket magnet (11) being opposite. When the positioning pin (20) is aligned with the positioning groove (13) of the socket module (1), the plug magnet (22) is staggered with its corresponding socket magnet (11) along the axial projection of the circular tenon (10). At this time, along the axial direction of the circular tenon (10), the central angle formed between the geometric center of each plug magnet (22) and the geometric center of its corresponding socket magnet (11) is the same as the central angle of the arc groove (12). The socket module (1) has a socket electrode in the circular tenon (10), and the plug module (2) has a plug electrode. The plug module (2) also includes a screw cap (25), an electrode locking mechanism and a mechanical locking structure, wherein the screw cap (25) is movably connected to the electrode locking mechanism and the mechanical locking structure.

2. The magnetic rotary coupling connector assembly according to claim 1, characterized in that, When there are multiple plug magnets (22), they are arranged around the central axis of the circular tenon (21) along the circumference; when there are multiple socket magnets (11), they are arranged around the central axis of the circular tenon (10) along the circumference.

3. The magnetic rotary coupling connector assembly according to claim 1, characterized in that, The socket electrode includes a socket ground electrode (100) disposed at the center of the bottom surface of the circular tenon (10), a socket neutral electrode (111) disposed around the socket ground electrode (100), and a socket live electrode (122); the conductive contact surfaces of the socket neutral electrode (111) and the socket live electrode (122) are located on the side. The plug electrode includes a plug neutral electrode (211), a plug live electrode (222), and a plug ground electrode (200) disposed at the center of the circular tenon (21); the conductive contact surfaces of the rotatable plug neutral electrode (211) and plug live electrode (222) are located on the side. Inside the circular screw cap (25), there are strip-shaped neutral wire slots (26), live wire slots (27), and mechanical locking slots (35) around the center. The electrode locking mechanism includes a neutral wire lever (261) and a live wire lever (271) arranged around the plug grounding electrode (200). The rotatable neutral wire lever (261) has a neutral wire fork (262) at its upper end that is accommodated in the neutral wire slot (26) and a lower end connected to the plug neutral wire electrode (211). The rotatable live wire lever (271) has a live wire fork (272) at its upper end that is accommodated in the live wire slot (27) and a lower end connected to the plug live wire electrode (222). The mechanical locking structure includes a mechanical locking lever (30), a mechanical locking block (31), and a mechanical locking fork (33). The lower end of the rotatable mechanical locking lever (30) is connected to the mechanical locking block (31), and the upper end is provided with a mechanical locking fork (33) that is accommodated in the mechanical locking groove (35). A lock hole (310) for the mechanical locking block (31) to extend and retract and lock and unlock the plug module (2) is provided on the outer wall of the circular tenon (21).

4. A magnetic rotary coupling connector assembly according to claim 3, characterized in that, Along the axial direction of the circular tenon (21), the central angle formed between the geometric center of the lock hole (310) and the geometric center of the positioning pin (20) is the same as the central angle of the arc groove (12); The neutral wire slot (26) used for separating and joining the neutral wire electrode (211) of the rotary linkage plug and the neutral wire electrode (111) of the socket has the same shape as the live wire slot (27) used for separating and joining the live wire electrode (222) of the rotary linkage plug and the live wire electrode (122) of the socket. The length of the mechanical locking slot (35) is greater than the length of the neutral wire slot (26) and the live wire slot (27).

5. A magnetic rotary coupling connector assembly according to claim 4, characterized in that, The socket module (1) has a circular tenon (10) with an elastic telescopic shielding component for shielding and protecting the socket neutral electrode (111) and the socket live electrode (122). The elastic telescopic shielding component includes a lateral shielding block (300), a top cover (301), and a shielding spring (302) sleeved on the socket ground electrode (100). The lateral shielding block (300) is sleeved on the socket ground electrode (100) and is respectively attached to the conductive contact surfaces on the sides of the socket neutral electrode (111) and the socket live electrode (122). The top cover (301) is sleeved on the socket ground electrode (100) and installed on the lateral shielding block (300). The bottom center of the circular tenon (21) is provided with an annular pressure block (303) for linkage with the lateral shielding block (300).

6. A magnetic rotary coupling connector assembly according to claim 3, characterized in that, The circular tenon (21) is provided with a radial spring (50) for pressing the plug neutral wire electrode (211) and plug live wire electrode (222), and the screw cap (25) is provided with a radial spring lever (52) for rotating and actuating the radial spring (50).

7. A magnetic rotary coupling connector assembly according to claim 1, characterized in that, The surface of the plug magnet (22) is flush with the end face of the circular tenon (21), and the surface of the socket magnet (11) is flush with the bottom surface of the circular tenon (10). The surface shape of each plug magnet (22) is the same as the surface shape of its corresponding socket magnet (11). The cross-sections of the positioning pin (20) and the positioning groove (13) are both arc-shaped.

8. A connection method for a magnetic rotary coupling connector assembly, characterized in that, The specific steps of its connection method are as follows: Step A, Insertion: Align the positioning pin (20) on the circular tenon (21) of the plug module (2) with the positioning groove (13) of the socket module (1), and insert it into the socket module (1) along the circular tenon (10) and the positioning groove (13). After the circular tenon (21) is fully inserted into the circular tenon (10), the positioning pin (20) reaches the end position where the positioning groove (13) and the arc groove (12) are connected. The plug grounding electrode (200) set in the center of the circular tenon (21) is electrically connected to the socket grounding electrode (100) set in the center of the circular tenon (10). The axial projection of the plug magnet (22) along the circular tenon (10) and its corresponding socket magnet (11) are staggered. Step B, Adaptive Rotation Positioning: After the circular tenon (21) is fully inserted into the circular mortise (10), under the magnetic force of the plug magnet (22) and the socket magnet (11) with opposite magnetic pole directions, the circular tenon (21) of the plug module (2) rotates in the circular mortise (10) in the forward direction. The positioning pin (20) rotates in the forward direction in the arc groove (12) to the other end of the arc groove (12) and is then structurally positioned. At the same time, the plug magnet (22) and the socket magnet (11) with opposite magnetic poles are magnetically coupled and positioned by mutual adaptive magnetic force. The plug neutral electrode (211) and plug live electrode (222) are also rotated to the corresponding socket neutral electrode (111) and socket live electrode (122); the lock hole (310) is also rotated to the corresponding position of the positioning groove (13); Step C, Tightening connection of the cap: After the positioning restriction in step A, the circular tenon (21) of the plug module (2) can no longer rotate in the circular tenon (10). Manually rotate the cap (25) in the forward direction along the extension direction of the positioning groove (13) towards the arc groove (12). The neutral wire slot (26), the live wire slot (27), and the mechanical locking slot (35) on the cap (25) respectively move the neutral wire fork (262), the live wire fork (272), and the mechanical locking fork (33), which respectively drive the neutral wire lever (261), the live wire lever (271), and the mechanical locking lever (30) to rotate in the forward direction. The mechanical locking lever (30) rotates, causing the lower mechanical locking block (31) to extend out of the lock hole (310) and into the positioning groove (13), locking the circular tenon (21) of the plug module (2) to rotate in the opposite direction in the circular tenon groove (10); the neutral wire lever (261) rotates, causing the lower plug neutral wire electrode (211) to rotate to be electrically connected with the socket neutral wire electrode (111), and the live wire lever (271) also rotates synchronously, causing the lower plug live wire electrode (222) to rotate to be electrically connected with the socket live wire electrode (122); thus completing the connection of the connector assembly; The specific steps of the method for separating the connector assembly are as follows: Step a, Unlocking and power-off of the cap: Manually rotate the cap (25) in the reverse direction. The neutral wire slot (26), live wire slot (27), and mechanical locking slot (35) of the cap (25) will respectively reverse the neutral wire fork (262), live wire fork (272), and mechanical locking fork (33), thereby driving the neutral wire lever (261), live wire lever (271), and mechanical locking lever (30) to rotate in the reverse direction. The neutral wire lever (261) rotates in the opposite direction, causing the lower plug neutral wire electrode (211) to disconnect from the socket neutral wire electrode (111) and cut off the power. The live wire lever (271) rotates in the opposite direction, causing the lower plug live wire electrode (222) to disconnect from the socket live wire electrode (122) and cut off the power simultaneously. The mechanical locking lever (30) rotates in the opposite direction, and then causes the lower mechanical locking block (31) to rotate out of the positioning groove (13) and retract into the lock hole (310), unlocking the rotation of the circular tenon (21) of the plug module (2) in the circular tenon groove (10). Step b, Separation: Continue to manually rotate the cap (25) in the opposite direction to drive the plug module (2) to rotate in the opposite direction, or directly rotate the plug module (2) body in the opposite direction. The circular tenon (21) of the plug module (2) rotates in the opposite direction in the circular tenon (10), causing the plug magnet (22) to separate from the socket magnet (11) with the opposite magnetic pole direction. After the positioning pin (20) of the circular tenon (21) rotates in the opposite direction in the arc groove (12) to the position of the positioning groove (13) at the end, pull out the plug module (2) to complete the separation of the connector assembly.

9. The connection method of a magnetic rotary coupling connector assembly according to claim 8, characterized in that, In step A, after the positioning pin (20) of the plug module (2) is aligned with the positioning groove (13) of the socket module (1) and inserted into the socket module (1), the bottom of the circular tenon (21) is compressed downward by the annular pressure block (303) to the blocking spring (302) inside the lateral blocking block (300), pressing down the lateral blocking block (300) to expose the conductive contact surfaces on the sides of the socket neutral electrode (111) and the socket live electrode (122); In step b, after the plug module (2) is pulled out, the side shielding block (300) pops out and shields the conductive contact surfaces on the sides of the socket neutral electrode (111) and socket live electrode (122). In step C, the mechanical locking lever (30) rotates, causing the lower mechanical locking block (31) to extend out of the lock hole (310) and rotate into the positioning groove (13), first locking the rotation of the circular tenon (21) of the plug module (2); the plug neutral electrode (211) and plug live electrode (222) rotate synchronously to the corresponding socket neutral electrode (111) and socket live electrode (122) positions respectively and are then stopped, synchronously completing the electrical connection of the neutral and live wires; In step a, the length of the mechanical locking groove (35) is greater than that of the neutral wire groove (26) and the live wire groove (27). During the manual reverse rotation of the cap (25), the mechanical locking groove (35) has a longer idle stroke without linkage. During this idle stroke, the neutral wire groove (26) and the live wire groove (27) are linked to the neutral wire lever (261) and the live wire lever (271) respectively. The plug neutral wire electrode (211) and the plug live wire electrode (222) are first driven to disconnect the electrical connection with the socket neutral wire electrode (111) and the socket live wire electrode (122). The mechanical locking groove (35) then moves the mechanical locking fork (33) to the linkage stroke. The mechanical locking groove (35) and the mechanical locking block (31) are completely rotated out of the positioning groove (13) and retracted into the lock hole (310). Then the circular tenon (21) of the unlock plug module (2) rotates.

10. The connection method of a magnetic rotary coupling connector assembly according to claim 8, characterized in that, In step C, the cap (25) is manually rotated in the forward direction. In the first part of the forward rotation of the cap (25), the neutral wire slot (26), the live wire slot (27), and the mechanical locking slot (35) on the cap (25) are all strip-shaped. In the first part of the rotation of the cap (25), there is no linkage during the idle stroke. The neutral wire fork (262), the live wire fork (272), and the mechanical locking fork (33) do not move. During this idle stroke, the radial spring block (52) at the bottom of the cap (25) moves the radial spring (50) to deform and bend, resulting in elastic deformation. The rear section of the rotating cap (25) generates a linkage, and the mechanical locking groove (35) is linked to the mechanical locking block (31) to extend out of the locking hole (310) and completely rotate into the positioning groove (13) to lock the plug module (2). The plug neutral electrode (211) and plug live electrode (222) rotate synchronously to the end position of the corresponding socket neutral electrode (111) and socket live electrode (122) respectively, and then stop, completing the electrical connection. The radial spring lever (52) at the bottom of the cap (25) moves the radial spring (50) to continue to deform and bend to form elastic potential energy. The elastic potential energy generated by the bending of the radial spring (50) simultaneously presses the conductive contact surface between the plug neutral electrode (211), socket live electrode (122) and the corresponding socket neutral electrode (111) and socket live electrode (122).

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