A cable connection socket and a straight cable tapping device

Abstract

The utility model discloses a kind of connecting socket of cable, it is related to cable connection field, the outer periphery of socket body is provided with the annular step of protruding, the surface of annular step and the outer periphery of socket body are all provided with metal coating, conducting rubber ring is arranged between socket shell and socket body, metal coating is connected with ground wire by conducting socket shell and conducting rubber ring, avoid electric shock accident;Still provide a kind of straight cable tapping device, including the connecting plug and connecting socket of cable, the outer periphery of plug body is provided with outer shielding layer, inside is provided with inner shielding layer, ensure that connecting plug is stably connected with ground wire, improve the safety performance of connecting plug, plug body inside is further provided with plug stress cone, improve cable insulation shielding layer break-off place electric field concentration problem, prevent cable breakdown;The end of inner shielding layer towards conical interface is provided with connector insert, guarantee the connection strength between terminal and connecting plug.

Description

Technical Field

[0001] This utility model relates to the field of cable connection, and in particular to a cable connection socket and a straight cable tapping device using the above-mentioned connection socket. Background Technology

[0002] In the context of accelerated urbanization, the stability and reliability of power supply have become one of the key factors for urban development. Existing cable joints are generally installed in distribution cabinets, and the outer shell of the cable joint needs to be connected to a ground wire to prevent electric shock accidents caused by workers accidentally touching the cable joint. Therefore, in order to cope with the more stringent power transmission environment and improve the safety of workers during the work process, a connection socket that can improve the grounding effect of the cable joint and prevent electric shock accidents caused by workers accidentally touching the cable joint is needed. Utility Model Content

[0003] The purpose of this utility model is to provide a cable connection socket to solve the problems existing in the prior art, improve the connection effect between the cable joint and the ground wire, avoid electric shock accidents after accidental contact with the cable joint, and improve the safety of the cable joint.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a cable connection socket, including a socket body and a socket shell for grounding and which is conductive and surrounds the outer periphery of the socket body. The outer periphery of the socket body is provided with an annular step that protrudes outward along the radial direction of the socket body. The surface of the annular step and the outer periphery of the socket body are both provided with a metal coating. The inner periphery of the socket shell is provided with an annular groove. The annular step is fitted into the annular groove. Along the axial direction of the socket body, there is an annular gap between the annular step and the annular groove. A conductive rubber ring is provided in the annular gap. The size of the conductive rubber ring along the radial direction of the socket body is larger than the size of the annular gap along the radial direction of the socket body, and / or the size of the conductive rubber ring along the axial direction of the socket body is larger than the size of the annular gap along the axial direction of the socket body.

[0005] In one embodiment, the socket body is provided with a tapered socket, and a conductive hole is provided inside the tapered socket.

[0006] In one embodiment, the conductive socket is provided with an annular contact point.

[0007] In one embodiment, the socket housing has a first thread on the outer peripheral surface of the portion of the tapered socket.

[0008] A straight cable splitter includes a cable connector plug and a cable connector socket. The connector plug includes a plug body, an outer shielding layer on the outer circumferential surface of the plug body, a through hole inside the plug body, a plug stress cone at one end of the through hole, and a tapered interface matching the socket body's inlet at the other end. An inner shielding layer is provided in the middle of the through hole, and a connector insert is provided at the end of the inner shielding layer facing the tapered interface.

[0009] In one embodiment, a limiting block is provided on the outer peripheral surface of the outer shielding layer near the tapered interface, and a first plug shell is sleeved on the outer side of the plug body near the plug stress cone. A second plug shell is provided on the end of the first plug shell facing the limiting block. The first plug shell is fixed to the outer peripheral surface of the outer shielding layer by the second plug shell and the limiting block.

[0010] In one embodiment, the end of the first plug housing abuts against the side of the limiting block, the second plug housing is engaged with the limiting block, the second plug housing extends toward the tapered interface, and a socket connector is provided at the end of the second plug housing. A second thread is provided on the inner circumferential surface of the socket connector toward the end of the tapered interface, and the socket connector and the tapered socket are connected by the second thread and the first thread.

[0011] In one embodiment, the device further includes a terminal block and a conductive rod. The terminal block is disposed on the side of the connector insert facing the plug stress cone and is disposed inside the inner shielding layer. One end of the terminal block abuts against the connector insert. The conductive rod is disposed on the side of the connector insert facing the tapered interface. One end of the conductive rod passes through the connector insert and is fixedly connected to the terminal block to fix the terminal block, and the other end is inserted into the conductive socket.

[0012] In one embodiment, an annular limiting groove is provided on the outer peripheral wall of the end of the second plug housing facing the tapered interface, and a retaining spring is provided in the annular limiting groove. The second plug housing and the socket connector are connected by the retaining spring.

[0013] The present invention achieves the following technical advantages over the prior art:

[0014] The socket housing is used for connection to the ground wire and is located on the outer periphery of the socket body. The outer periphery of the socket body has a protruding annular step. Both the surface of the annular step and the outer periphery of the socket body are coated with a metal layer. The inner periphery of the socket housing has an annular groove, and the annular step fits into the annular groove. Along the axial direction of the socket body, there is an annular gap between the annular step and the annular groove. A conductive rubber ring is placed within this annular gap. The conductive rubber ring deforms under the pressure of the annular groove and the annular step, ensuring that the conductive...

[0015] The electric rubber ring abuts against the side wall of the annular spacer. Through the metal coating and the conductive rubber ring, the induced voltage generated during the power transmission process of the cable is transferred to the conductive socket shell, and then connected to the ground wire through the socket shell, so as to prevent electric shock accidents caused by workers accidentally touching the socket.

[0016] This utility model also provides a straight cable splitter, including a cable connector plug and the aforementioned connector socket. An outer shielding layer is provided on the outer circumferential surface of the plug body to ensure that the induced voltage generated during cable power transmission is grounded, thereby improving the safety performance of the connector plug. A through hole is provided inside the plug body, and a plug stress cone is provided at one end of the through hole to improve the problem of electric field concentration at the break in the cable insulation shielding layer and prevent cable breakdown. A tapered interface matching the socket body is provided at the other end. An inner shielding layer is provided in the middle of the through hole to further uniformize the electric field at the break in the cable insulation shielding layer and prevent breakdown. A connector insert is provided at the end of the inner shielding layer facing the tapered interface to fix the terminal block and the end of the cable, ensuring the connection strength between the cable, the terminal block and the connector plug. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the cable connection socket in one embodiment of the present invention;

[0019] Figure 2 This is an enlarged schematic diagram of the structure at point A in the cable connection socket of one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the cable connector in one embodiment of the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the structure at point B in the cable connector in one embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection between the cable connector and the cable in one embodiment of the present invention;

[0023] Figure 6 In one embodiment of this utility model, the cable connector and the cable...

[0024] A diagram illustrating the connection of the socket;

[0025] The components are as follows: 1. Socket body; 2. Socket outer shell; 3. Conductive rubber ring; 4. First thread; 5. Conductive socket; 6. Conical socket; 7. Metal coating; 8. Plug body; 9. First plug outer shell; 10. Second plug outer shell; 11. Socket connector; 12. Outer shielding layer; 13. Inner shielding layer; 14. Plug stress cone; 15. Connector insert; 16. Terminal block; 17. Spring clip; 18. Conical interface; 19. Cable; 20. Cable core; 21. Conductive rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The purpose of this invention is to provide a cable connection socket to solve the problems existing in the prior art and avoid electric shock accidents.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to Figures 1-2The connector for cable 19 includes a connector body 1 and a conductive connector housing 2 for grounding, which surrounds the outer periphery of the connector body 1. The housing 2 is made of conductive material, including but not limited to metals such as iron and copper. The outer periphery of the connector body 1 has an annular step protruding radially outward. A metal coating 7 is applied to the surface of the annular step and the outer periphery of the connector body 1, ensuring uniform coating during the application process. An annular groove is provided on the inner periphery of the housing 2. The housing 2 is a separate unit; after the housing 2 is fastened to the outer periphery of the connector body 1, the annular step can fit into the annular groove. The fit between the annular step and the annular groove restricts axial displacement between the housing 2 and the connector body 1, ensuring relative stability of their positions. Furthermore, along the axial direction of the connector body 1, an annular gap is formed between the end face of the annular step and the end face of the annular groove. The number of annular intervals between the grooves is one or two, preferably two, located at both ends of the annular step. A conductive rubber ring 3 is provided within each annular interval, the number of which corresponds to the number of annular intervals. The radial dimension of the conductive rubber ring 3 along the socket body 1 is greater than the radial dimension of the annular interval along the socket body 1, and / or the axial dimension of the conductive rubber ring 3 along the socket body 1 is greater than the axial dimension of the annular interval along the socket body 1. During the process of the socket housing 2 fastening onto the outer periphery of the socket body 1, the annular grooves on the socket housing 2 compress the conductive rubber rings 3, causing them to deform. This ensures that the conductive rubber rings 3 can tightly adhere to the annular grooves, the annular step, and the metal coating 7 on the outer periphery of the socket body 1. Then, the socket housing 2 is connected to the ground wire, achieving a connection between the conductive coating and the ground wire. The voltage between the socket housing 2 and the ground is forcibly reduced to near zero potential, preventing electric shock accidents and improving the safety performance of the connection socket.

[0030] like Figure 1 As shown, in a specific embodiment, both the socket body 1 and the socket shell 2 are cylindrical structures. At least one annular step is provided on the outer circumferential surface of the socket body 1, and a conductive rubber ring 3 is provided on the end face of the annular step. The socket shell 2 is a split structure. An annular groove corresponding to the annular step on the outer circumferential surface of the socket body 1 is provided on the inner circumferential surface of the socket shell 2. During the process of the socket shell 2 being fastened to the outer surface of the socket body 1 from both sides, the conductive rubber ring 3 is deformed under the squeezing force of the annular groove until the socket shell 2 is completely fastened.

[0031] The socket body 1 is also provided with a tapered socket 6, and a conductive socket 5 is provided inside the tapered socket 6. When using the connecting socket to connect the cable 19, the cable core 20 is inserted into the conductive socket 5 to achieve the conduction of the cable 19 on both sides of the connecting socket.

[0032] An annular contact point is also provided in the conductive socket 5. After the cable core 20 is inserted into the conductive socket 5, the cable core 20 and the annular contact point realize power transmission. Preferably, the annular contact point is set as an elastic contact point, and the inner diameter of the annular contact point is smaller than the diameter of the cable core 20, so as to ensure stable power transmission between the cable core 20 and the annular contact point.

[0033] The outer circumferential surface of the portion of the socket housing 2 surrounding the conical socket 6 is provided with a first thread 4, which facilitates connection with other structures.

[0034] Please refer to Figures 3 to 6 This embodiment also discloses a straight cable splitter, which includes a connector plug and a connector socket. The connector plug includes a plug body 8, and an outer shielding layer 12 is provided on the outer peripheral surface of the plug body 8. The function of the outer shielding layer 12 is to ground the induced voltage generated during power transmission by the cable 19, thereby improving the safety performance of the connector plug and protecting the safety of the operator. A through hole is provided inside the plug body 8. A plug stress cone 14 is provided at one end of the through hole, and a tapered interface 18 matching the socket body 1 is provided at the other end for connecting the cable 19. One end of the cable 19 is stripped of its sheath, copper shield, insulation shield, and insulation layer to expose the cable core 20. The cable core 20 is inserted into the through hole and fixed to achieve the connection between the cable 19 and the connector plug. The plug stress cone 14 can improve the problem of electric field concentration at the break of the insulation shield layer of the cable 19 and prevent the cable 19 from breaking down. An inner shielding layer 13 is provided in the middle of the through hole. In order to ensure the connection strength between the cable core 20 and the connector plug, a connector insert 15 is provided at the end of the inner shielding layer 13 facing the conical interface 18 to enhance the connection stability between the connector plug and the cable core 20.

[0035] A limiting block is provided on the outer peripheral surface of the outer shielding layer 12 near the tapered interface 18. A first plug shell 9 is sleeved on the outer side of the plug body 8 near the plug stress cone 14. The first plug shell 9 wraps around the outer shielding layer 12 to prevent the outer shielding layer 12 from being damaged by external forces, ensure the induced voltage is grounded, and improve the safety performance of the connector. A second plug shell 10 is provided on the end of the first plug shell 9 facing the limiting block. The first plug shell 9 is fixed to the outer peripheral surface of the outer shielding layer 12 by the second plug shell 10 and the limiting block. The second plug shell 10 and the first plug shell 9 are fixed by connection methods including but not limited to threaded connections.

[0036] As a preferred technical solution, a limiting screw hole is provided on the outer side of the end of the first plug housing 9, and a limiting hole is provided at the end of the second plug housing 10 facing the first plug housing 9. A set screw is provided in the limiting hole, and the end of the set screw is threaded. After the set screw passes through the limiting hole, it is screwed into the limiting screw hole provided on the first plug housing 9, and a pre-tightening force is applied to ensure a tight connection between the first plug housing 9 and the second plug housing 10.

[0037] Furthermore, the end of the first plug housing 9 abuts against the side of the limiting block, and the second plug housing 10 is engaged with the limiting block. Through the connection between the second plug housing 10 and the first plug housing 9, the first plug housing 9 and the second plug housing 10 are fixed by the limiting block. In addition, the second plug housing 10 extends towards the tapered interface 18, and a socket connector 11 is provided at the end of the second plug housing 10. The inner circumferential surface of the socket connector 11 facing the tapered interface 18 is provided with a second thread. In actual use, the tapered socket 6 on the connector socket is inserted into the tapered interface 18 on the connector socket. The socket connector 11 and the tapered socket 6 are connected by the second thread and the first thread 4, thereby realizing a tight connection between the connector socket and the connector plug.

[0038] To ensure a stable electrical connection between the cable core 20 and the connector plug, the connector plug is also equipped with a terminal block 16 and a conductive rod 21. The cable core 20 is inserted into the terminal block 16 and pressed down to ensure a fixed connection between the cable core 20 and the terminal block 16. Then, the terminal block 16 is inserted into the connector plug. The terminal block 16 is located on the side of the connector insert 15 facing the plug stress cone 14, so that one end of the terminal block 16 abuts against the connector insert 15, ensuring that the terminal block 16 is located inside the inner shielding layer 13. The conductive rod 21 is located on the side of the connector insert 15 facing the tapered interface 18. One end of the conductive rod 21 passes through the connector insert 15 and is fixedly connected to the terminal block 16 to fix the terminal block 16 inside the connector plug. After the cable 19 is fixedly connected to the connector plug, the tapered socket 6 on the connector socket is inserted into the tapered interface 18 on the connector plug, and the other end of the conductive rod 21 is inserted into the conductive socket 5 to realize the electrical connection between the connector socket and the connector plug.

[0039] To ensure the connection strength between the connector and the socket, an annular limiting groove is provided on the outer peripheral wall of the end of the second connector housing 10 facing the tapered interface 18. A retaining spring 17 is provided in the annular limiting groove. When the connector and the socket housing 2 are connected by threads, as the first thread 4 and the second thread are tightened, the retaining spring 17 provided between the second connector housing 10 and the socket connector 11 undergoes elastic deformation, providing pre-tightening force for the connection between the first thread 4 and the second thread, and preventing loosening between the first thread 4 and the second thread.

[0040] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0041] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cable connection socket, characterized in that, The device includes a socket body and a socket housing for grounding and which is conductive and surrounds the outer periphery of the socket body. The outer periphery of the socket body has an annular step that protrudes radially outward. Both the surface of the annular step and the outer periphery of the socket body are coated with a metal coating. The inner periphery of the socket housing has an annular groove. The annular step is fitted into the annular groove. Along the axial direction of the socket body, there is an annular gap between the annular step and the annular groove. A conductive rubber ring is provided within the annular gap. The dimension of the conductive rubber ring along the radial direction of the socket body is larger than the dimension of the annular gap along the radial direction of the socket body, and / or the dimension of the conductive rubber ring along the axial direction of the socket body is larger than the dimension of the annular gap along the axial direction of the socket body.

2. The cable connection socket according to claim 1, characterized in that, The socket body is provided with a tapered socket, and a conductive hole is provided inside the tapered socket.

3. The cable connection socket according to claim 2, characterized in that, The conductive socket is provided with an annular contact point.

4. The cable connection socket according to claim 3, characterized in that, The socket housing has a first thread on the outer peripheral surface surrounding the portion of the tapered socket.

5. A straight cable splitter, comprising a cable connector plug and a cable connector socket as described in claim 4, characterized in that, The connector includes a connector body, an outer shielding layer on the outer peripheral surface of the connector body, a through hole inside the connector body, a connector stress cone at one end of the through hole, and a tapered interface matching the socket body at the other end. An inner shielding layer is provided in the middle of the through hole, and a connector insert is provided at one end of the inner shielding layer facing the tapered interface.

6. The straight cable tapping device according to claim 5, characterized in that, A limiting block is provided on the outer peripheral surface of the outer shielding layer near the tapered interface. A first plug shell is sleeved on the outer side of the plug body near the plug stress cone. A second plug shell is provided on the end of the first plug shell facing the limiting block. The first plug shell is fixed on the outer peripheral surface of the outer shielding layer by the second plug shell and the limiting block.

7. The straight cable tapping device according to claim 6, characterized in that, The end of the first plug housing abuts against the side of the limiting block, the second plug housing is engaged with the limiting block, the second plug housing extends toward the tapered interface, and a socket connector is provided at the end of the second plug housing. The socket connector is provided with a second thread on the inner circumferential surface of the end facing the tapered interface, and the socket connector is connected to the tapered socket by the second thread and the first thread.

8. The straight cable tapping device according to claim 5, characterized in that, It also includes a terminal block and a conductive rod. The terminal block is disposed on the side of the connector insert facing the plug stress cone and inside the inner shielding layer. One end of the terminal block abuts against the connector insert. The conductive rod is disposed on the side of the connector insert facing the tapered interface. One end of the conductive rod passes through the connector insert and is fixedly connected to the terminal block to fix the terminal block, and the other end is inserted into the conductive socket.

9. The straight cable tapping device according to claim 7, characterized in that, An annular limiting groove is provided on the outer peripheral wall of the end of the second plug housing facing the tapered interface, and a retaining spring is provided in the annular limiting groove. The second plug housing and the socket connector are connected by the retaining spring.

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