Self-locking cable connector

Abstract

The invention belongs to the technical field of cable connection, and discloses a self-locking cable connector which comprises a first joint and a second joint which are clamped, and further comprises an assembly groove and a sealing groove which are formed in the end face of the first joint / the second joint and are coaxially distributed in a double-layer mode. The end face corresponding to the second connector / the first connector is provided with a functional protruding plate and a bearing groove which are arranged opposite to the assembling groove and the sealing groove respectively. The assembling groove and the sealing groove are located on the radial outer side and the radial inner side respectively, and the sides, away from the end face, of the assembling groove and the sealing groove are communicated. The elastic sealing body is arranged in the assembling groove and the sealing groove in a sliding mode. According to the invention, the elastic sealing body moves into the receiving groove to shield the contact surface of the joint and cooperates with the elastic abutting piece to continuously apply elastic force to the end part of the elastic sealing body, so that the elastic sealing body can adapt to local gaps or excursion possibly appearing on the contact surface of the joint to realize a tight fitting and covering effect, and invasion of impurities such as external dust and water vapor is effectively blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of cable connection, in particular to a self-locking cable connector. Background Art

[0002] In the field of power transmission, the snap-on self-locking cable connector, as a common connection device used to connect two sections of cables, has met the basic needs of cable connection to a certain extent. However, with the development of technology and the diversification of application scenarios, its defects have gradually become prominent.

[0003] Existing snap-on self-locking cable connectors are mostly sealed by ordinary rubber sealing rings, etc., and the sealing performance of the connection parts is poor. In actual use environments, they are often exposed to external factors such as dust and water vapor. Traditional sealing structures are difficult to effectively block these impurities, resulting in oxidation and corrosion at the connection points, which not only increases the contact resistance and reduces the power transmission efficiency, but may even cause serious safety accidents such as short circuits, resulting in power transmission interruptions.

[0004] Therefore, a self-locking cable connector is provided to solve the above problem. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a self-locking cable connector.

[0006] To achieve the above object, the present invention provides the following technical solution: a self-locking cable connector, comprising a first connector and a second connector that are connected to each other, and further comprising: An assembly groove and a sealing groove are provided on the end surface of the first joint / the second joint and are coaxially distributed in double layers, and a functional convex plate and a receiving groove are provided on the end surface of the second joint / the first joint and are respectively arranged opposite to the assembly groove and the sealing groove; The assembly groove and the sealing groove are located at the radial outer side and the radial inner side respectively, and the assembly groove and the sealing groove are connected at a side away from the end surface; An elastic sealing body is slidably arranged in the assembly groove and the sealing groove; As the functional convex plate is inserted into the assembly groove, the elastic sealing body is pushed along the sealing groove into the receiving groove to shield the end surface of the first joint in contact with the second joint.

[0007] In the above technical solution, preferably, an elastic abutment member abutting against the end of the elastic sealing body is provided in the receiving groove, and the elastic sealing body comprises: An elastic sealing ring is arranged in the assembly groove and the sealing groove; A gas accommodating chamber is arranged in the elastic sealing ring.

[0008] In the above technical solution, preferably, a guide wire is provided in the gas containing chamber, with two ends respectively connected to two ends of the inner wall of the elastic sealing ring.

[0009] In the above technical solution, preferably, the elastic abutment member includes an abutment plate and springs distributed in an array in the receiving groove, and two ends of the spring are respectively connected to the inner end of the receiving groove and the abutment plate.

[0010] In the above technical solution, preferably, the end faces of the first joint and the second joint are provided with assembly grooves and sealing grooves that are connected and coaxially distributed in double layers, and the end faces of the second joint and the first joint are provided with functional convex plates and receiving grooves that are respectively arranged opposite to the assembly grooves and the sealing grooves; Wherein, the assembly grooves and the functional convex plates in the joints on both sides are located in the same radial plane, the sealing groove in the joint on one side is arranged opposite to the receiving groove in the joint on the other side, and the sealing grooves in the joints on both sides are respectively located on the radial outer side and the radial inner side; The elastic sealing body has two assembly grooves and sealing grooves which are respectively slidably arranged in the joints on both sides; The functional convex plates on both sides are arranged in an array on the end surfaces of the first joint and the second joint and are arranged adjacent to each other.

[0011] In the above technical solution, preferably, it also includes: Pneumatic sealing bodies are arranged in an array in the assembly groove and connected to adjacent functional convex plates; A reciprocating gas conveying member connected to the pneumatic sealing body; When the functional convex plate is inserted into / moved out of the assembly groove, the reciprocating gas conveying member introduces gas into / extracts gas from the pneumatic sealing body, and the pneumatic sealing body filled with gas is used to shield the functional convex plate from being inserted into the assembly groove.

[0012] In the above technical solution, preferably, the pneumatic sealing body includes an elastic airbag, an air cavity is provided in the elastic airbag, a through hole connected to the air cavity is provided on one side of the elastic airbag close to the functional convex plate, and the output end of the reciprocating gas conveying member is connected to the through hole.

[0013] In the above technical solution, preferably, the reciprocating gas conveying element comprises: The accommodating cavity is arranged in the functional convex plate and is connected with the pneumatic sealing body through the air flow channel; A movable plate is arranged in the accommodating cavity; A pushing member, used for pushing the moving plate to move back and forth linearly in a direction toward the pneumatic sealing body; When the functional convex plate is inserted into / moved out of the assembly groove, the pushing member pushes the movable plate to move in a direction approaching / moving away from the pneumatic sealing body, thereby introducing / exporting gas to the pneumatic sealing body / accommodating cavity.

[0014] In the above technical solution, preferably, the pushing member includes: A first magnetic block is disposed on the movable plate; A push plate is connected to the elastic sealing body, and an adaption hole matching the push plate is provided at the end of the functional convex plate; A second magnetic block is arranged at the end of the push plate; When the functional convex plate is inserted into / moved out of the assembly slot, the second magnetic block on the push plate is inserted into / pulled out of the adaptation hole to be magnetically connected / disconnected with the first magnetic block, and drives the movable plate to move closer to / away from the pneumatic sealing body.

[0015] In the above technical solution, preferably, it also includes: A shielding ring and a third magnetic block are arranged at the end of the functional convex plate and located outside the adapting hole, wherein the third magnetic block is located outside the shielding ring; A fourth magnetic block is disposed at the end of the elastic sealing body and located outside the push plate; There is a receiving area between the fourth magnetic block and the push plate, and the receiving area is adapted to the shielding ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The elastic sealing body of the present invention is pushed when the functional convex plate is inserted, moved into the receiving groove to shield the contact surface of the joint, and cooperates with the elastic abutment to continuously apply elastic force to the end of the elastic sealing body, thereby ensuring that the elastic sealing body can adapt to possible local gaps or offsets on the contact surface of the joint to achieve a tight fitting covering effect, effectively blocking the invasion of impurities such as dust and water vapor from the outside, preventing oxidation and corrosion of the cable joint, and improving the stability of power transmission.

[0017] The pneumatic sealing body and the elastic sealing body are further utilized to work in dynamic coordination to form double protection. The pneumatic sealing body and the elastic sealing body are used to respectively shield the end faces where the functional convex plate is inserted into the assembly groove and the contact end faces of the first joint and the second joint, thereby compensating for possible weak points in sealing. The double-layer structure greatly improves the ability to block impurities such as dust, water vapor, and corrosive gases, and reduces the risk of oxidation and corrosion at the cable connection parts.

[0018] Moreover, the first connector and the second connector both have elastic sealing bodies that can form multiple sealing effects, thereby reducing the risk of loss of the overall sealing performance of the connector due to failure of a single sealing body. At the same time, multiple seals also enhance the ability to block impurities such as dust and water vapor.

[0019] In addition, with the structural design of the elastic airbag, the first magnetic block, the second magnetic block, the shielding ring, the third magnetic block and the fourth magnetic block, the inflation and exhaust of the pneumatic seal are automatically triggered by the insertion and removal of the functional convex plate, and the displacement and automatic resetting of the elastic seal can be achieved through magnetic connection without the need for additional manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front cross-sectional view of the present invention; Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the first joint and the second joint of the present invention; Figure 4 is a schematic diagram of a three-dimensional cross-sectional structure of a first joint of the present invention; Figure 5 is a schematic diagram of a three-dimensional cross-sectional structure of the second joint of the present invention; Figure 6 It is a three-dimensional cross-sectional schematic diagram of the elastic sealing body, the push plate, the second magnetic block, and the fourth magnetic block of the present invention; Figure 7 It is a schematic cross-sectional structure diagram of the elastic sealing body and the elastic abutment member of the present invention; Figure 8 For the present invention Figure 2 Enlarged view of point A in the middle.

[0021] In the figure: 1. first joint; 2. second joint; 3. assembly groove; 4. sealing groove; 5. functional convex plate; 6. receiving groove; 7. elastic sealing body; 71. elastic sealing ring; 72. gas containing chamber; 73. guide wire; 8. elastic abutment; 81. abutment plate; 82. spring; 9. pneumatic sealing body; 91. elastic airbag; 92. air chamber; 93. through hole; 10. reciprocating gas conveying member; 101. containing chamber; 102. air flow channel; 103. movable plate; 104. pushing member; 11. first magnetic block; 12. push plate; 13. adaptation hole; 14. second magnetic block; 15. shielding ring; 16. third magnetic block; 17. fourth magnetic block; 18. containing area. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The self-locking clamping structure of the self-locking cable connector is realized by using the existing mature technology. Figure 1 Only a simple abutment self-locking snap-in method is shown, and other related self-locking snap-in methods are not shown in the drawings of this design description. In actual construction, the self-locking snap-in structure can be placed on the inner side of the first joint 1 and the second joint 2 according to the conventional setting method of the prior art. This layout can ensure that while achieving reliable snap-in, it can be effectively protected by the sealing structure on the outside.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides a self-locking cable connector, comprising a first connector 1 and a second connector 2 that are connected to each other, and further comprising: The assembly groove 3 and the sealing groove 4 are provided on the end surface of the first joint 1 / the second joint 2 and are coaxially distributed in double layers, and the end surface of the second joint 2 / the first joint 1 is provided with a functional convex plate 5 and a receiving groove 6 which are respectively arranged opposite to the assembly groove 3 and the sealing groove 4; The assembly groove 3 and the sealing groove 4 are respectively located on the radial outer side and the radial inner side, and the assembly groove 3 and the sealing groove 4 are connected at a side away from the end surface; The elastic sealing body 7 is slidably disposed in the assembly groove 3 and the sealing groove 4; As the functional convex plate 5 is inserted into the assembly groove 3 , the elastic sealing body 7 is pushed along the sealing groove 4 into the receiving groove 6 to cover the contact end faces of the first joint 1 and the second joint 2 .

[0025] The functional convex plate 5 plays a positioning role in ensuring that the two connectors can be accurately aligned, and the above-mentioned connected assembly groove 3 and sealing groove 4 provide a moving track for the elastic sealing body 7, ensuring that the elastic sealing body 7 moves along the sealing groove 4 into the receiving groove 6, tightly covering the contact end faces of the first connector 1 and the second connector 2. This sealing method has a longer sealing path and a better protective effect, and can greatly prevent dust, water vapor and other impurities from entering the interior of the connector.

[0026] In addition, the elastic sealing body 7 has a certain extrusion force with the two joints during the sealing process. The elastic deformation of the elastic sealing body 7 improves the fit with the end face, improves the sealing effect, and also enhances the force of the self-locking card joint between the joints to prevent the connection parts from loosening. Compared with simple plug-in connection, it has better stability.

[0027] like Figure 6 , Figure 7 As shown, an elastic abutment member 8 is provided in the receiving groove 6 and abuts against the end of the elastic sealing body 7. The elastic sealing body 7 includes: An elastic sealing ring 71 is arranged in the assembly groove 3 and the sealing groove 4; A gas accommodating chamber 72 is provided in the elastic sealing ring 71 .

[0028] The elastic abutment member 8 abuts against the end of the elastic sealing body 7 to give an abutment force. Due to its own elastic characteristics and in combination with the gas accommodating chamber 72, it can have a good elastic deformation ability, so that it can closely fit the inner wall of the assembly groove 3 and the sealing groove 4, and can adapt to the slight deviation or change in size and shape of the assembly groove 3 and the sealing groove 4. An effective seal is formed to prevent fluid or gas and other media from leaking through the gap.

[0029] A guide wire 73 is provided in the gas containing cavity 72 , with two ends respectively connected to two ends of the inner wall of the elastic sealing ring 71 .

[0030] When the elastic sealing ring 71 is subjected to external force, the guide wire 73 can guide it to move in a certain direction, which is beneficial to maintain a good fit between the sealing ring and the assembly groove and the sealing groove, thereby ensuring the sealing effect.

[0031] The elastic abutment member 8 includes an abutment plate 81 and springs 82 distributed in an array in the receiving groove 6 , and two ends of the spring 82 are connected to the inner end of the receiving groove 6 and the abutment plate 81 respectively.

[0032] The array-distributed abutment plates 81 can provide uniform abutment force to each position of the end of the elastic sealing body 7, so that the abutment plates 81 always maintain appropriate abutment pressure with the elastic sealing body 7, thereby ensuring the sealing effect without damaging the elastic sealing body 7 due to excessive pressure.

[0033] like Figure 4 , Figure 5 , Figure 6 As shown, the end faces of the first joint 1 and the second joint 2 are both provided with a connecting and double-layer coaxially distributed assembly groove 3 and a sealing groove 4, and the end faces of the second joint 2 and the first joint 1 are both provided with a functional convex plate 5 and a receiving groove 6 which are respectively arranged opposite to the assembly groove 3 and the sealing groove 4; The assembly grooves 3 and the functional convex plates 5 in the joints on both sides are located in the same radial plane, the sealing groove 4 in the joint on one side is arranged opposite to the receiving groove 6 in the joint on the other side, and the sealing grooves 4 in the joints on both sides are located on the radial outer side and the radial inner side respectively; The elastic sealing body 7 has two assembling grooves 3 and sealing grooves 4 which are respectively slidably disposed in the joints at both sides; The functional convex plates 5 on both sides are arranged in an array on the end surfaces of the first joint 1 and the second joint 2 and are arranged adjacent to each other.

[0034] On the limited joint end face, a multi-layer distribution method is adopted to arrange the assembly groove 3 and the sealing groove 4 corresponding to the two joints, which makes full use of the radial space and enables the two layers of elastic sealing body 7 to form a double sealing defense line, which can effectively prevent the leakage of the medium and improve the sealing performance at the joint.

[0035] like Figure 4 , Figure 6 As shown, it also includes: Pneumatic sealing bodies 9 are arranged in an array in the assembly groove 3 and connected to adjacent functional convex plates 5; A reciprocating gas conveying member 10 is connected to the pneumatic sealing body 9; When the functional convex plate 5 is inserted into / moved out of the assembly groove 3 , the reciprocating gas conveying member 10 introduces gas into / extracts gas from the pneumatic sealing body 9 , and the pneumatic sealing body 9 filled with gas is used to shield the functional convex plate 5 from being inserted into the assembly groove 3 .

[0036] The pneumatic sealing body 9 expands and the shielding function convex plate 5 is inserted into the assembly groove 3 to form a tight seal. Compared with the traditional static seal, this active sealing method can better adapt to the changes of different deviations, effectively prevent medium leakage, and greatly improve the sealing reliability of the joint.

[0037] The pneumatic sealing body 9 includes an elastic airbag 91 , in which an air cavity 92 is provided. A through hole 93 communicating with the air cavity 92 is provided on one side of the elastic airbag 91 close to the functional convex plate 5 , and the output end of the reciprocating gas conveying member 10 is connected to the through hole 93 .

[0038] The elastic airbag 91 has good elasticity, and can expand and fit closely to the inner wall of the functional convex plate 5 and the assembly groove 3 when inflated, and shrink when deflated, so as not to hinder the insertion and removal of the functional convex plate 5. This elastic property enables the pneumatic sealing body 9 to adapt to the dimensional tolerance and shape deviation that may exist between the functional convex plate 5 and the assembly groove 3, thereby ensuring the sealing effect.

[0039] The reciprocating gas conveying member 10 comprises: The accommodating cavity 101 is provided in the functional convex plate 5 and is connected with the pneumatic sealing body 9 through the air flow channel 102; The movable plate 103 is disposed in the accommodating chamber 101; A pusher 104 is used to push the moving plate 103 to move back and forth in a straight line in a direction toward the pneumatic sealing body 9; When the functional convex plate 5 is inserted into / moved out of the assembly groove, the pusher 104 pushes the movable plate 103 to move in a direction approaching / away from the pneumatic sealing body 9 , thereby introducing / exporting gas to / from the pneumatic sealing body 9 / the accommodating chamber 101 .

[0040] The insertion and removal of the functional convex plate 5 directly triggers the gas delivery operation of the reciprocating gas delivery member 10, thereby controlling the sealing state of the pneumatic sealing body 9. The entire operation can be completed without manual intervention or additional power source.

[0041] like Figure 4 , Figure 6 As shown, the pusher 104 includes: The first magnetic block 11 is disposed on the moving plate 103; The push plate 12 is connected to the elastic sealing body 7, and the end of the functional convex plate 5 is provided with an adaption hole 13 adapted to the push plate 12; A second magnetic block 14 is provided at the end of the push plate 12; The first magnetic block 11 and the second magnetic block 14 are magnetically attracted to each other; When the functional convex plate 5 is inserted into / moved out of the assembly groove 3 , the second magnetic block 14 on the push plate 12 penetrates / pulls out of the adapting hole 13 to magnetically connect / disconnect with the first magnetic block 11 , and drives the movable plate 103 to move closer to / away from the pneumatic sealing body 9 .

[0042] When the functional protruding plate 5 is inserted into the assembly groove 3, the push plate 12 moves together with the elastic sealing body 7, so that the second magnetic block 14 is close to the first magnetic block 11. Due to the magnetic attraction between the two, the second magnetic block 14 penetrates into the adaptation hole 13 and connects with the first magnetic block 11, thereby driving the movable plate 103 to move close to the pneumatic sealing body 9, thereby realizing the operation of introducing gas into the pneumatic sealing body 9.

[0043] On the contrary, when the functional protrusion plate 5 moves out of the assembly groove 3, the movable plate 103 is away from the pneumatic sealing body 9 to discharge the gas and then releases the magnetic connection under the action of other forces. This automatic driving mechanism based on magnetic attraction does not require an additional power source to be set up, and realizes automatic synchronization of the gas delivery operation and the action of the functional protrusion plate 5.

[0044] like Figure 8 As shown, it also includes: A shielding ring 15 and a third magnetic block 16 are provided at the end of the functional convex plate 5 and located outside the adapting hole 13, and the third magnetic block 16 is located outside the shielding ring 15; The fourth magnetic block 17 is arranged at the end of the elastic sealing body 7 and located outside the push plate 12; There is a receiving area 18 between the fourth magnetic block 17 and the push plate 12 , and the receiving area 18 is matched with the shielding ring 15 .

[0045] The third magnetic block 16 and the fourth magnetic block 17 are magnetically attracted to each other: During the process of inserting the functional protrusion 5 into the assembly groove 3, the shielding ring 15 is inserted into the accommodating area 18. At this time, the magnetic attraction between the third magnetic block 16 and the fourth magnetic block 17 can keep the functional protrusion 5 and the elastic sealing body 7 in a relatively fixed positional relationship to prevent relative displacement between them, and can further promote the movement of the elastic sealing body 7. When the functional protrusion 5 moves out of the assembly groove 3, the magnetic connection is released, and the functional protrusion 5 drives the elastic sealing body 7 to reset and disengage under the action of other forces. No additional power source is required, thereby realizing automatic synchronization between the reset of the elastic sealing body 7 and the action of the functional protrusion 5.

[0046] The working principle and use process of the present invention: The first joint 1 and the second joint 2 are aligned so that the functional convex plates 5 on the joints on both sides correspond to the corresponding assembly grooves respectively, and the joints on both sides begin to dock, the functional convex plate 5 is inserted into the assembly groove 3, and the second magnetic block 14 on the push plate 12 is sequentially inserted into the shielding ring 15 and the adaptation hole 13 to be magnetically connected with the first magnetic block 11, thereby driving the moving plate 103 to move in the direction close to the pneumatic sealing body 9, and as the moving plate 103 moves close to the pneumatic sealing body 9, the gas is introduced into the air cavity 92 along the air flow channel under the action of pressure, so that the elastic airbag 91 expands and gradually covers the functional convex plate 5 inserted into the assembly groove 3; During this process, as the functional convex plate 5 gradually goes deeper, the third magnetic block 16 of the functional convex plate 5 is magnetically connected with the fourth magnetic block 17, the shielding ring 15 enters the accommodating area 18, and the elastic sealing ring 71 also gradually moves in the assembly groove 3 and the sealing groove 4 and moves into the receiving groove 6 under the cooperation of the guide wire 73 as the functional convex plate 5 goes deeper. When the elastic sealing ring 71 moves into the receiving groove 6, its end will contact the abutment plate 81 and slowly tighten, the spring 82 will shrink under pressure, and the elastic sealing ring 71 will be elastically deformed to fit the end surface of the first joint 1 and the second joint 2 through the elastic force, until the first joint 1 and the second joint 2 are docked, even if the elastic airbag 91 expands and the elastic sealing ring 71 is elastically deformed, respectively covering the functional convex plate 5 inserted into the assembly groove 3 and the end surface of the first joint 1 and the second joint 2 in contact, thus completing the sealing operation.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking cable connector, comprising a first connector (1) and a second connector (2) that are snap-fitted together, characterized in that: Also includes: An assembly groove (3) and a sealing groove (4) are provided on the end surface of the first joint (1) / the second joint (2) and are coaxially distributed in double layers, and a functional convex plate (5) and a receiving groove (6) are provided on the end surface of the second joint (2) / the first joint (1) and are arranged opposite to the assembly groove (3) and the sealing groove (4); The assembly groove (3) and the sealing groove (4) are located on the radially outer side and the radially inner side respectively, and the assembly groove (3) and the sealing groove (4) are connected at a side away from the end surface; An elastic sealing body (7) is slidably disposed in the assembly groove (3) and the sealing groove (4); As the functional convex plate (5) is inserted into the assembly groove (3), the elastic sealing body (7) is pushed along the sealing groove (4) into the receiving groove (6) to shield the end surface of the first joint (1) and the second joint (2) in contact.

2. A self-locking cable connector according to claim 1, characterized in that: An elastic abutment member (8) is provided in the receiving groove (6) and abuts against the end of the elastic sealing body (7). The elastic sealing body (7) comprises: An elastic sealing ring (71) is disposed in the assembly groove (3) and the sealing groove (4); A gas accommodating chamber (72) is provided in the elastic sealing ring (71).

3. A self-locking cable connector according to claim 2, characterized in that: The gas containing cavity (72) is provided with a guide wire (73) whose two ends are respectively connected to the two ends of the inner wall of the elastic sealing ring (71).

4. A self-locking cable connector according to claim 2, characterized in that: The elastic abutment member (8) comprises an abutment plate (81) and springs (82) distributed in an array in the receiving groove (6), and two ends of the spring (82) are respectively connected to the inner end of the receiving groove (6) and the abutment plate (81).

5. A self-locking cable connector according to any one of claims 1 to 3, characterized in that: The end surfaces of the first joint (1) and the second joint (2) are both provided with an assembly groove (3) and a sealing groove (4) which are connected and coaxially distributed in double layers, and the end surfaces of the second joint (2) and the first joint (1) are both provided with a functional convex plate (5) and a receiving groove (6) which are respectively arranged opposite to the assembly groove (3) and the sealing groove (4); The assembly grooves (3) and the functional convex plates (5) in the joints on both sides are located in the same radial plane, the sealing grooves (4) in the joint on one side and the receiving grooves (6) in the joint on the other side are arranged opposite to each other, and the sealing grooves (4) in the joints on both sides are located on the radial outer side and the radial inner side respectively; The elastic sealing body (7) has two assembly grooves (3) and sealing grooves (4) which are respectively slidably arranged in the joints on both sides. The functional convex plates (5) on both sides are arranged in an array on the end surfaces of the first joint (1) and the second joint (2) and are arranged adjacent to each other.

6. A self-locking cable connector according to claim 5, characterized in that: Also includes: Pneumatic sealing bodies (9) are arranged in an array in the assembly groove (3) and are connected to adjacent functional convex plates (5); A reciprocating gas conveying member (10) connected to the pneumatic sealing body (9); When the functional convex plate (5) is inserted into / moved out of the assembly groove (3), the reciprocating gas conveying member (10) introduces gas into / extracts gas from the pneumatic sealing body (9), and the pneumatic sealing body (9) filled with gas is used to shield the functional convex plate (5) from being inserted into the assembly groove (3).

7. A self-locking cable connector according to claim 6, characterized in that: The pneumatic sealing body (9) comprises an elastic airbag (91), an air cavity (92) being provided in the elastic airbag (91), a through hole (93) communicating with the air cavity (92) being provided on a side of the elastic airbag (91) close to the functional convex plate (5), and an output end of the reciprocating gas conveying member (10) being communicated with the through hole (93).

8. The self-locking cable connector according to claim 6, characterized in that: The reciprocating gas conveying member (10) comprises: The accommodating cavity (101) is disposed in the functional convex plate (5) and is connected to the pneumatic sealing body (9) through the air flow channel (102); A movable plate (103) is disposed in the accommodating cavity (101); A pushing member (104) is used to push the movable plate (103) to move back and forth in a straight line in a direction toward the pneumatic sealing body (9); When the functional convex plate (5) is inserted into / moved out of the assembly groove, the pushing member (104) pushes the movable plate (103) to move in a direction approaching / moving away from the pneumatic sealing body (9), thereby introducing / exporting gas to / from the pneumatic sealing body (9) / the accommodating chamber (101).

9. A self-locking cable connector according to claim 8, characterized in that: The pushing member (104) comprises: A first magnetic block (11) is disposed on the movable plate (103); A push plate (12) is connected to the elastic sealing body (7); an end of the functional convex plate (5) is provided with an adaption hole (13) adapted to the push plate (12); A second magnetic block (14) is arranged at the end of the push plate (12); When the functional convex plate (5) is inserted into / moved out of the assembly groove (3), the second magnetic block (14) on the push plate (12) is inserted into / pulled out of the adaptation hole (13) to be magnetically connected / disconnected with the first magnetic block (11), and drives the movable plate (103) to move closer to / away from the pneumatic sealing body (9).

10. The self-locking cable connector according to claim 9, characterized in that: Also includes: A shielding ring (15) and a third magnetic block (16) provided at the end of the functional convex plate (5) and located outside the adaption hole (13), wherein the third magnetic block (16) is located outside the shielding ring (15); A fourth magnetic block (17) is arranged at the end of the elastic sealing body (7) and is located outside the push plate (12); There is a receiving area (18) between the fourth magnetic block (17) and the push plate (12), and the receiving area (18) is compatible with the shielding ring (15).

Images