A circumferentially mateable plug and socket

The concentric circle structure design of the plug and socket that can be circumferentially connected solves the problem that medium-voltage AC connectors can only be connected in one direction, realizing the automated connection of plugs and sockets and improving the safety and stability of equipment in high-voltage environments.

CN122246534APending Publication Date: 2026-06-19JIANGYIN KAIDA ELECTRIAL & MECHANICAL MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGYIN KAIDA ELECTRIAL & MECHANICAL MFG CO LTD
Filing Date
2026-03-20
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing medium-voltage AC connectors and sockets can only be connected in one direction, making automated connection difficult, especially when the socket moves with the equipment in tidal, wave, or uneven environments, making stable connection difficult to achieve.

Method used

It adopts a circumferentially mating plug and socket design, which uses a concentric circle structure to allow the plug and socket to be mated in any direction. Through the design of multi-layer insulation rings and conductive rings, it ensures stable current transmission and safe isolation.

Benefits of technology

It reduces the difficulty of plug and socket connection, realizes automated plug and socket docking, improves the success rate and efficiency of automated equipment, and meets the safety and insulation requirements under high voltage environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a circumferentially mating plug and socket, comprising a plug body and a socket body. The plug body includes a first insulating base, and its top is coaxially arranged with a first protective ring, a first insertion ring, a second insulating ring, a second insertion ring, a third insulating ring, a third insertion ring, a fourth insulating ring, and a fourth insertion element, all of which are conductive to the plug wires. The socket body includes a second insulating base, and its top is coaxially arranged with a second protective ring, a first insertion ring, a fifth insulating ring, a second insertion ring, a sixth insulating ring, a third insertion ring, a seventh insulating ring, and a fourth insertion ring, all of which are conductive to the socket wires. During mating, each insulating ring of the plug inserts into its corresponding positioning ring, and the insertion ring inserts into its corresponding insertion ring, achieving precise circumferential mating and conductive connection. This circumferentially mating plug and socket, by employing a concentric circle structure, enables mating of the plug and socket in any direction, greatly reducing the difficulty of plug-socket connection and facilitating automated mating of the plug and socket.
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Description

Technical Field

[0001] This invention relates to a plug and socket, and more particularly to a plug and socket that can be circumferentially mated. Background Technology

[0002] The existing medium-voltage 6KV-12KV cable quick-connect plugs and sockets are mainly connected and disconnected manually, and are used in applications such as port shore power and mines.

[0003] With the development of automation needs, such as in shore power applications, the connection and disconnection of ship-to-shore cable plugs and sockets, which were originally done manually after ships dock, must be completed automatically by automated mechanisms without human intervention. Another example is the advancement of intelligent unmanned mine construction (where mining utilizes next-generation information technology to achieve advanced forms of mining, transportation, drainage, beneficiation, and safety processes with reduced or no human intervention, remote collaboration, and intelligent control). Mobile power supply equipment for electrical equipment such as electric shovels and excavators must inevitably face the challenge of achieving self-connection and disconnection via their own mechanisms.

[0004] However, the existing national standard plugs for medium-voltage AC connectors are mainly arranged in a triangular shape. The conductive electrodes are composed of three-phase positive poles, grounding, and a number of safety circuits. When the plug and socket are connected, only one direction is recognized. If the socket is fixed, then theoretically, the plug can only be connected at one angle when it is inserted into the socket. If this connection is handled by automatic equipment, it is fine if the socket is always in one position. However, if the socket drifts with the ship due to environmental factors such as tides and waves, or in mining environments where the road surface is uneven, the socket will also move irregularly with the equipment, making it very difficult to achieve automatic connection. Summary of the Invention

[0005] To solve the above problems, the present invention provides a plug and socket that can be circumferentially connected, the specific technical solution of which is as follows: A circumferentially mating plug and socket includes: a plug body comprising a first insulating base, and a first protective ring, a first insertion ring, a second insulating ring, a second insertion ring, a third insulating ring, a third insertion ring, a fourth insulating ring, and a fourth insert member coaxially arranged from the outside to the inside on the top of the first insulating base, wherein the first insertion ring, the second insertion ring, the third insertion ring, and the fourth insert member are all connected to and conductively connected to a plug wire; and a socket body comprising a second insulating base, and a second protective ring, a first insertion ring, a fifth insulating ring, a second insertion ring, and a sixth insulating ring coaxially arranged from the outside to the inside on the top of the second insulating base. The device comprises a third, a seventh, and a fourth plug-in ring. All three rings are connected to and conductively conduct with the socket wires. When the plug body is inserted into the socket body, the first protective ring is inserted inside the second protective ring, the first insertion ring is inserted inside the first plug-in ring, the second insulating ring is inserted outside the fifth insulating ring, the second insertion ring is inserted inside the second plug-in ring, the third insulating ring is inserted outside the sixth insulating ring, the third insertion ring is inserted inside the third plug-in ring, the fourth insulating ring is inserted outside the seventh insulating ring, and the fourth insertion piece is inserted inside the fourth plug-in ring.

[0006] Preferably, the plug body further includes: a first connecting screw, disposed on the first insulating base and connected to the first insertion ring, the second insertion ring, and the third insertion ring respectively; a first conductive screw, disposed on the first insulating base and connected to and conducting with the first insertion ring, the second insertion ring, the third insertion ring, and the plug wire respectively; a first connecting nut, disposed on the first insertion ring, the second insertion ring, and the third insertion ring and connected to the first connecting screw and the first conductive screw, so that the first insertion ring, the second insertion ring, and the third insertion ring are fixed on the first insulating base; and a first center screw, disposed on the first insulating base and connected to and conducting with the fourth insert and the plug wire respectively; the socket body further includes: a second connecting screw, disposed on the second insulating base and connected to the threaded holes on the first insertion ring, the second insertion ring, and the third insertion ring respectively; The second conductive screw is disposed on the second insulating base and is connected and conductive to the first insertion ring, the second insertion ring, the third insertion ring and the socket wire respectively; the second center screw is disposed on the second insulating base and is connected and conductive to the fourth insertion ring and the socket wire respectively.

[0007] Furthermore, the bottoms of the first insertion ring, the second insertion ring, and the third insertion ring are respectively provided with a first bottom connecting ring, a second bottom connecting ring, a third bottom connecting ring, and a first bottom connecting hole provided on the first bottom connecting ring, the second bottom connecting ring, and the third bottom connecting ring. The first connecting screw and the first conductive screw are both inserted into the first bottom connecting hole. The bottoms of the first insertion ring, the second insertion ring, and the third insertion ring are respectively provided with a fourth bottom connecting ring, a fifth bottom connecting ring, a sixth bottom connecting ring, and a connecting threaded hole provided on the fourth bottom connecting ring, the fifth bottom connecting ring, and the sixth bottom connecting ring. The second connecting screw and the second conductive screw are both connected to the connecting threaded hole.

[0008] Furthermore, the bottom of the first insulating base is coaxially arranged with a first isolation ring, a second isolation ring, and a third isolation ring arranged sequentially from the outside to the inside. The first insertion ring is located outside the first isolation ring, the second insertion ring is located between the first and second isolation rings, the third insertion ring is located between the second and third isolation rings, and the fourth insertion member is located inside the third isolation ring. The bottom of the second insulating base is coaxially arranged with a fourth isolation ring, a fifth isolation ring, and a sixth isolation ring arranged sequentially from the outside to the inside. The first insertion ring is located outside the fourth isolation ring, the second insertion ring is located between the fourth and fifth isolation rings, the third insertion ring is located between the fifth and sixth isolation rings, and the fourth insertion ring is located inside the sixth isolation ring.

[0009] Preferably, the plug body further includes a protective outer shell, disposed at the bottom of the first insulating base and connected to the plug wire.

[0010] Furthermore, the plug body also includes a connecting component, which is connected to the protective housing and the plug wire respectively.

[0011] Preferably, the plug body further includes: a first sealing gasket disposed at the bottom of the first protective ring, for abutting against the top of the second protective ring, so as to form a seal between the plug body and the socket body.

[0012] Preferably, the plug body further includes: a second sealing gasket disposed on the top of the first insulating base and located between the second insulating ring and the second insertion ring, for abutting against the top of the fifth insulating ring; and a third sealing gasket disposed on the top of the first insulating base and located between the third insulating ring and the third insertion ring, for abutting against the top of the sixth insulating ring.

[0013] Preferably, the socket body further includes: conductive springs arranged in a ring array on the inner circular surfaces of the first insertion ring, the second insertion ring, the third insertion ring, and the fourth insertion ring, for abutting against the first insertion ring, the second insertion ring, the third insertion ring, and the fourth insertion ring.

[0014] Preferably, the socket body further includes: a connecting flange disposed at the bottom of the second insulating base; and a connecting sealing gasket disposed on the connecting flange.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The circumferentially mating plug and socket provided by the present invention achieves mating of the plug and socket in any direction by adopting a concentric circle structure, which greatly reduces the difficulty of plug and socket connection and facilitates the automated mating of plug and socket. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a cross-sectional view of this application; Figure 3 This is a cross-sectional view of the plug body; Figure 4 This is a first-person perspective view of the plug itself; Figure 5 This is a two-dimensional view of the plug itself from a second perspective; Figure 6 This is a front view of the plug body; Figure 7 This is a three-dimensional view of the socket itself from the first perspective; Figure 8 This is a two-dimensional view of the socket itself from a second perspective; Figure 9 This is a cross-sectional view of the socket body; Figure 10 This is a front view of the socket itself. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] like Figures 1 to 10As shown, a circumferentially mating plug and socket includes a plug body 1 and a socket body 6. The plug body 1 includes a first insulating base 10, and a first protective ring 11, a first insertion ring 21, a second insulating ring 12, a second insertion ring 22, a third insulating ring 13, a third insertion ring 23, a fourth insulating ring 14, and a fourth insertion member 24 arranged coaxially and sequentially from the outside to the inside on the top of the first insulating base 10. The first insertion ring 21, the second insertion ring 22, the third insertion ring 23, and the fourth insertion member 24 are all connected to and conductively connected to the plug wire 3. The socket body 6 includes a second insulating base 60, and a second protective ring 61, a first plug-in ring 71, and a fifth insulating ring 62 arranged coaxially and sequentially from the outside to the inside on the top of the second insulating base 60. The second plug ring 72, the sixth insulating ring 63, the third plug ring 73, the seventh insulating ring 64, and the fourth plug ring 74, as well as the first plug ring 71, the second plug ring 72, the third plug ring 73, and the fourth plug ring 74, are all connected to and conduct through the socket wires. When the plug body 1 is inserted into the socket body 6, the first protective ring 11 is inserted into the second protective ring 61, the first insertion ring 21 is inserted into the first plug ring 71, the second insulating ring 12 is inserted outside the fifth insulating ring 62, the second insertion ring 22 is inserted inside the second plug ring 72, the third insulating ring 13 is inserted outside the sixth insulating ring 63, the third insertion ring 23 is inserted inside the third plug ring 73, the fourth insulating ring 14 is inserted outside the seventh insulating ring 64, and the fourth insertion piece 24 is inserted inside the fourth plug ring 74.

[0019] Both the first insulating base 10 and the second insulating base 60 are made of insulating plastic. The first insertion ring 21, the second insertion ring 22, the third insertion ring 23, the fourth insertion piece 24, the first plug-in ring 71, the second plug-in ring 72, the third plug-in ring 73, and the fourth plug-in ring 74 are all made of metal, with high strength and good conductivity to ensure stable current transmission; they are usually made of copper. The fourth insertion piece 24 is cylindrical. The cylindrical design of the fourth insertion piece 24 provides a larger contact area with the fourth plug-in ring 74 of the socket, reducing contact resistance.

[0020] Since both the plug body 1 and the socket body 6 adopt a circular structure, the plug and socket can be connected at any angle without the need for a specific connection angle. This greatly reduces the difficulty of plug and socket connection, so that during automated connection, only coaxiality needs to be considered, and the angle of the plug and socket does not need to be considered, which facilitates the automated connection of the plug and socket.

[0021] The first insertion ring 21 can be used for grounding (PE), and the second insertion ring 22, the third insertion ring 23 and the fourth insertion piece 24 are used for the three phase lines of the positive pole, that is, for L3, L2 and L1 in sequence.

[0022] The ring structure of the positioning ring and the plug ring corresponds perfectly to the multi-layered concentric circles of the plug. No matter from which angle the plug is inserted, it can be guided by the positioning rings and plug rings in sequence to achieve stable docking.

[0023] The first protective ring 11 is made of metal and serves a protective function, protecting the internal insertion ring and insulating ring.

[0024] The fifth insulating ring 62, the sixth insulating ring 63, and the seventh insulating ring 64 are used for insulation and to increase the creepage distance, while also enabling left and right guidance during insertion.

[0025] For ease of assembly and production, the plug body 1 also includes a first connecting screw 31, a first conductive screw 32, a first connecting nut 33, and a first center screw 34. The first connecting screw 31 is disposed on the first insulating base 10 and is connected to the first insertion ring 21, the second insertion ring 22, and the third insertion ring 23, respectively. The first conductive screw 32 is disposed on the first insulating base 10 and is connected to and conducts electricity with the first insertion ring 21, the second insertion ring 22, the third insertion ring 23, and the plug wire 3, respectively. The first connecting nut 33 is disposed on the first insertion ring 21, the second insertion ring 22, and the third insertion ring 23 and is connected to the first connecting screw 31 and the first conductive screw 34. The first insertion ring 21, the second insertion ring 22, and the third insertion ring 23 are connected by nails 32 to fix them onto the first insulating base 10. The first insertion ring 21 has two first connecting screws 31 and one first conductive screw, arranged in a circular array. The second insertion ring 22 has two first connecting screws 31 and one first conductive screw, arranged in a circular array. The third insertion ring 23 has two first connecting screws 31 and one first conductive screw, arranged in a circular array. A first center screw 34 is located on the first insulating base 10 and is connected and conductive to the fourth insert 24 and the plug wire 3, respectively.

[0026] The socket body 6 also includes a second connecting screw 36, a second conductive screw 37, and a second center screw 38. The second connecting screw 36 is disposed on the second insulating base 60 and is connected to the threaded holes on the first insertion ring 71, the second insertion ring 72, and the third insertion ring 73, respectively. The second conductive screw 37 is disposed on the second insulating base 60 and is connected to and conducts electricity with the first insertion ring 71, the second insertion ring 72, the third insertion ring 73, and the socket wire, respectively. The first insertion ring 71 has five second connecting screws 36 and one second conductive screw 37, arranged in a circular array. The second insertion ring 72 and the third insertion ring 73 have two second connecting screws 36 and one second conductive screw 37, arranged in a circular array. The second center screw 38 is disposed on the second insulating base 60 and is connected to and conducts electricity with the fourth insertion ring 74 and the socket wire, respectively. By fixing the insertion ring and the insertion ring to the first insulating base 10 and the second insulating base 60 with screws and nuts, the connection strength is ensured while facilitating production and assembly.

[0027] The bottoms of the first insertion ring 21, the second insertion ring 22, and the third insertion ring 23 are respectively provided with a first bottom connecting ring 211, a second bottom connecting ring 221, and a third bottom connecting ring 231, and a first bottom connecting hole provided on the first bottom connecting ring 211, the second bottom connecting ring 221, and the third bottom connecting ring 231. The first connecting screw 31 and the first conductive screw 32 are both inserted into the first bottom connecting hole. The bottoms of the first insertion ring 71, the second insertion ring 72, and the third insertion ring 73 are respectively provided with a fourth bottom connecting ring 711, a fifth bottom connecting ring 721, and a sixth bottom connecting ring 731, and a connecting threaded hole provided on the fourth bottom connecting ring 711, the fifth bottom connecting ring 721, and the sixth bottom connecting ring 731. The second connecting screw 36 and the second conductive screw 37 are both connected to the connecting threaded hole. The bottom connecting rings not only facilitate the setting of the bottom connecting hole and the connecting threaded hole, but also improve the strength of the insertion rings and the connecting rings.

[0028] The bottom of the first insulating base 10 is coaxially arranged and, from the outside to the inside, is provided with a first isolation ring 15, a second isolation ring 16, and a third isolation ring 17. The first insertion ring 21 is located outside the first isolation ring 15, the second insertion ring 22 is located between the first isolation ring 15 and the second isolation ring 16, the third insertion ring 23 is located between the second isolation ring 16 and the third isolation ring 17, and the fourth insertion member 24 is located inside the third isolation ring 17. The bottom of the second insulating base 60 is coaxially arranged and, from the outside to the inside, is provided with a fourth isolation ring 65, a fifth isolation ring 66, and a sixth isolation ring 67. The first insertion ring 71 is located outside the fourth isolation ring 65, the second insertion ring 72 is located between the fourth isolation ring 65 and the fifth isolation ring 66, the third insertion ring 73 is located between the fifth isolation ring 66 and the sixth isolation ring 67, and the fourth insertion ring 74 is located inside the sixth isolation ring 67. The insulating ring further separates adjacent conductive components, primarily for isolating the three phase wires and the ground wire. Even if the outer insulating ring is accidentally damaged, the inner insulating ring can still block the leakage path, improving safety under high-voltage conditions. The insulating ring and the base are integrally injection molded, increasing the base's resistance to deformation and preventing cracking caused by frequent insertion and removal.

[0029] The third isolation ring 17 and the fourth insulating ring 24 can be an integral structure, installed on the first insulating base 10.

[0030] The plug body 1 also includes a protective housing 18, which is mounted on the bottom of the first insulating base 10 and connected to the plug wire 3. The plug body 1 also includes a connecting assembly 4, which is connected to both the protective housing 18 and the plug wire 3. The connecting assembly 4 is used to achieve a seal between the protective housing 18 and the plug wire 3. The connecting assembly 4 is a readily available and mature product, including clamps, connectors, and gaskets, and will not be described in detail here.

[0031] The plug body 1 also includes a first sealing gasket 81, which is installed at the bottom of the first protective ring 11 and abuts against the top of the second protective ring 61 to form a seal between the plug body 1 and the socket body 6. The bottom of the first protective ring 11 has a first flange located on the outside of the first protective ring 11 to facilitate the insertion of the first sealing gasket 81. The first sealing gasket 81 is an annular gasket made of rubber.

[0032] The plug body 1 also includes a second sealing gasket 82 and a third sealing gasket 83. The second sealing gasket 82 is installed on the top of the first insulating base 10 and is located between the second insulating ring 12 and the second insertion ring 22, and is used to abut against the top of the fifth insulating ring 62. The third sealing gasket 83 is installed on the top of the first insulating base 10 and is located between the third insulating ring 13 and the third insertion ring 23, and is used to abut against the top of the sixth insulating ring 63.

[0033] The socket body 6 also includes conductive springs 70, which are arranged in a ring array on the inner surfaces of the first insertion ring 71, the second insertion ring 72, the third insertion ring 73, and the fourth insertion ring 74, respectively, to abut against the first insertion ring 21, the second insertion ring 22, the third insertion ring 23, and the fourth insertion ring. The conductive springs 70 are made of metal and are elastic, improving the reliability of electrical conductivity between the insertion ring and the insertion ring. Furthermore, the conductive springs 70 have a pre-tightening force, automatically compensating for machining tolerances between the insertion ring and the insertion ring when the plug is inserted, ensuring uniform contact pressure, preventing arc erosion caused by poor contact, and extending service life.

[0034] The socket body 6 also includes a connecting flange 68 and a connecting gasket 69. The connecting flange 68 is installed on the bottom of the second insulating base 60; the connecting gasket 69 is installed on the connecting flange 68.

[0035] Traditional plugs and sockets, such as those arranged in a triangular pattern, only support single-angle docking. However, this embodiment uses a ring-shaped symmetrical structure to enable coaxial docking of the plug and socket in any 360° circumferential direction. This eliminates the need for precise angle alignment, reducing automation difficulty. Only the coaxiality of the plug and socket needs to be ensured, rather than the angle. This greatly simplifies the control logic of the automatic docking equipment and improves the success rate and efficiency of automated plugging and unplugging.

[0036] Multi-layer insulating rings physically isolate conductive rings of different phases, avoiding the risk of phase-to-phase short circuits and meeting the insulation and safe creepage distance requirements under medium-voltage 6KV-12KV high-voltage environments.

[0037] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A circumferentially mateable plug and receptacle, characterized by, include: The plug body (1) includes a first insulating base (10), and a first protective ring (11), a first insertion ring (21), a second insulating ring (12), a second insertion ring (22), a third insulating ring (13), a third insertion ring (23), a fourth insulating ring (14), and a fourth insertion piece (24) arranged coaxially and sequentially from the outside to the inside on the top of the first insulating base (10). The first insertion ring (21), the second insertion ring (22), the third insertion ring (23), and the fourth insertion piece (24) are all connected to and conduct through the plug wire (3). The socket body (6) includes a second insulating base (60), a second protective ring (61) arranged coaxially and arranged from the outside to the inside on the top of the second insulating base (60), a first plug ring (71), a fifth insulating ring (62), a second plug ring (72), a sixth insulating ring (63), a third plug ring (73), a seventh insulating ring (64) and a fourth plug ring (74), the first plug ring (71), the second plug ring (72), the third plug ring (73) and the fourth plug ring (74) are all connected to the socket wire and conduction; When the plug body (1) is inserted into the socket body (6), the first protective ring (11) is inserted into the second protective ring (61), the first insertion ring (21) is inserted into the first plug ring (71), the second insulating ring (12) is inserted outside the fifth insulating ring (62), the second insertion ring (22) is inserted inside the second plug ring (72), the third insulating ring (13) is inserted outside the sixth insulating ring (63), the third insertion ring (23) is inserted inside the third plug ring (73), the fourth insulating ring (14) is inserted outside the seventh insulating ring (64), and the fourth insert (24) is inserted inside the fourth plug ring (74).

2. The circumferentially mating plug and socket according to claim 1, characterized in that, The plug body (1) also includes: The first connecting screw (31) is disposed on the first insulating base (10) and is connected to the first insertion ring (21), the second insertion ring (22) and the third insertion ring (23) respectively; The first conductive screw (32) is disposed on the first insulating base (10) and is connected and conductive to the first insertion ring (21), the second insertion ring (22), the third insertion ring (23) and the plug wire (3) respectively; A first connecting nut (33) is disposed on the first insertion ring (21), the second insertion ring (22), and the third insertion ring (23), and is connected to the first connecting screw (31) and the first conductive screw (32) to fix the first insertion ring (21), the second insertion ring (22), and the third insertion ring (23) on the first insulating base (10); and The first center screw (34) is located on the third isolation ring (17) and is connected and conductive to the fourth insert (24) and the plug wire (3) respectively; the third isolation ring (17) is fastened to the first insulating base (10) by threads; The socket body (6) also includes: The second connecting screw (36) is disposed on the second insulating base (60) and is connected to the threaded holes on the first plug ring (71), the second plug ring (72) and the third plug ring (73) respectively; The second conductive screw (37) is disposed on the second insulating base (60) and is connected and conductive to the first plug ring (71), the second plug ring (72), the third plug ring (73) and the socket wire respectively; The second center screw (38) is located on the sixth isolation ring (67) and is connected and conductive to the fourth plug ring (74) and the socket wire respectively; the sixth isolation ring (67) is fastened to the second insulating base (60) by threads.

3. A circumferentially mating plug and socket according to claim 2, characterized in that, The bottom of the first insertion ring (21), the second insertion ring (22), and the third insertion ring (23) are respectively provided with a first bottom connecting ring (211), a second bottom connecting ring (221), a third bottom connecting ring (231), and a first bottom connecting hole provided on the first bottom connecting ring (211), the second bottom connecting ring (221), and the third bottom connecting ring (231). The first connecting screw (31) and the first conductive screw (32) are both inserted into the first bottom connecting hole. The bottom of the first plug ring (71), the second plug ring (72), and the third plug ring (73) are respectively provided with a fourth bottom connecting ring (711), a fifth bottom connecting ring (721), a sixth bottom connecting ring (731), and connecting threaded holes provided on the fourth bottom connecting ring (711), the fifth bottom connecting ring (721), and the sixth bottom connecting ring (731). The second connecting screw (36) and the second conductive screw (37) are both connected to the connecting threaded holes.

4. A circumferentially mating plug and socket according to claim 2, characterized in that, The bottom of the first insulating base (10) is coaxially arranged and has a first isolation ring (15), a second isolation ring (16) and a third isolation ring (17) arranged sequentially from the outside to the inside. The first insertion ring (21) is located outside the first isolation ring (15), the second insertion ring (22) is located between the first isolation ring (15) and the second isolation ring (16), the third insertion ring (23) is located between the second isolation ring (16) and the third isolation ring (17), and the fourth insertion piece (24) is located inside the third isolation ring (17). The bottom of the second insulating base (60) is coaxially arranged with a fourth isolation ring (65), a fifth isolation ring (66) and a sixth isolation ring (67) from the outside to the inside. The first plug ring (71) is located outside the fourth isolation ring (65), the second plug ring (72) is located between the fourth isolation ring (65) and the fifth isolation ring (66), the third plug ring (73) is located between the fifth isolation ring (66) and the sixth isolation ring (67), and the fourth plug ring (74) is located inside the sixth isolation ring (67).

5. A peripherally mateable plug jack as defined in claim 1 wherein, The plug body (1) further includes a protective shell (18), which is disposed at the bottom of the first insulating base (10) and connected to the plug wire (3).

6. A peripherally mateable plug jack as defined in claim 5 wherein, The plug body (1) also includes a connecting component (4) which is connected to the protective shell (18) and the plug wire (3) respectively.

7. A peripherally mateable plug jack as defined in claim 1 wherein, The plug body (1) further includes a first sealing gasket (81) disposed at the bottom of the first protective ring (11) for abutting against the top of the second protective ring (61) to form a seal between the plug body (1) and the socket body (6).

8. A peripherally mateable plug jack as defined in claim 1 wherein, The plug body (1) also includes: The second sealing gasket (82) is disposed on the top of the first insulating base (10) and located between the second insulating ring (12) and the second insertion ring (22), for abutting against the top of the fifth insulating ring (62); and The third sealing gasket (83) is disposed on the top of the first insulating base (10) and located between the third insulating ring (13) and the third insertion ring (23), for abutting against the top of the sixth insulating ring (63).

9. A peripherally mateable plug jack as defined in claim 1 wherein, The socket body (6) further includes: conductive springs (70), which are arranged in a ring array on the inner circular surfaces of the first insertion ring (71), the second insertion ring (72), the third insertion ring (73) and the fourth insertion ring (74), for abutting against the first insertion ring (21), the second insertion ring (22), the third insertion ring (23) and the fourth insertion ring.

10. A peripherally mateable plug jack as defined in claim 1 wherein, The socket body (6) also includes: A connecting flange (68) is located at the bottom of the second insulating base (60); and A connecting gasket (69) is provided on the connecting flange (68).