Combined cable joint

Abstract

The utility model discloses a combined cable joint, and relates to the technical field of cable fittings. The combined cable joint comprises a joint body, two ends of the joint body are respectively provided with interfaces, stress cones are respectively accommodated in the two interfaces, two ends of the joint body are respectively sleeved with end shells, the end shells are hollow, extrusion blocks are arranged in the end shells, and the extrusion blocks are embedded between the stress cones and the inner walls of the interfaces. According to the combined cable joint, the extrusion blocks on the combined cable joint can respectively extrude the outer wall of the stress cone and the inner wall of the interface, so that expansion of the stress cone can be prevented, and the sealing performance of the interface can be improved.

Description

Technical Field

[0001] This application relates to the field of cable fittings, and in particular to a combined cable connector. Background Technology

[0002] A cable joint, also known as a cable termination, is a component used to connect cable segments into a continuous line after the cable has been laid. Stress cones are typically installed within the cable joint to mitigate stress concentration issues.

[0003] However, during the use of cable joints, the stress cone will gradually expand, making it unable to effectively improve the stress concentration problem of the cable, which greatly affects the power transmission quality of the cable. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a combined cable connector that can prevent the expansion of stress cones.

[0005] The combined cable connector provided in this application adopts the following technical solution:

[0006] A combined cable connector includes a connector body, with interfaces at both ends of the connector body, stress cones being accommodated in each of the two interfaces, and end shells fitted at both ends of the connector body. The end shells are hollow and contain compression blocks, which are embedded between the stress cones and the inner walls of the interfaces.

[0007] By adopting the above technical solution, the extrusion block can extrude the outer wall of the stress cone and the inner wall of the interface respectively, which can not only prevent the stress cone from expanding, but also improve the sealing of the interface.

[0008] In one specific implementation, an annular gap is formed between the stress cone and the inner wall of the interface, and the extrusion block is annular and fits into the gap.

[0009] By adopting the above technical solution, the extrusion block can be completely accommodated between the stress cone and the inner wall of the interface, further improving the extrusion effect of the extrusion block on the stress cone and the inner wall of the interface.

[0010] In one specific implementation, the stress cone has a tapered portion at one end facing the extrusion block, and the outer wall surface of the tapered portion matches and fits against the inner wall surface of the extrusion block.

[0011] By adopting the above technical solution, the conical part can be completely accommodated in the extrusion block, which further improves the extrusion effect of the extrusion block on the stress cone.

[0012] In one specific implementation, the end of the extrusion block away from the gap is also connected to an elastic element, and the other end of the elastic element is connected to the inner wall of the end shell.

[0013] By adopting the above technical solution, the extrusion block can be continuously and tightly embedded in the gap under the action of the elastic element. This not only further improves the extrusion block's extrusion effect on the stress cone and the inner wall of the interface, but also prevents the extrusion block from leaving the gap.

[0014] In one specific implementation scheme, the end shell is further provided with a mounting ring for mounting the elastic element, and the axis of the compression block, the axis of the elastic element and the axis of the mounting ring coincide with each other.

[0015] By adopting the above technical solution, both ends of the elastic element can be fixed to the compression block and the mounting ring respectively, which not only improves the elastic expansion and contraction effect of the elastic element, but also prevents the elastic element from twisting during the expansion and contraction process.

[0016] In one specific implementation, the end shell includes a first shell sleeved on the end of the connector body and a second shell coaxially connected to the end of the first shell away from the connector body, wherein the inner diameter of the second shell is smaller than the inner diameter of the first shell.

[0017] By adopting the above technical solution, the end shell can be connected to the connector body through the first shell with a larger inner diameter and the cable can be covered through the second shell with a smaller inner diameter. This not only ensures the connection strength between the end shell and the connector body, but also reduces the gap between the end shell and the cable.

[0018] In one specific implementation, the joint body includes a hollow epoxy component, a hollow conductor disposed within the epoxy component, and a connecting portion disposed within the conductor. The two end shells are respectively fitted onto the two ends of the epoxy component, and the two stress cones are respectively connected to the two ends of the conductor.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] The extrusion block can extrude force on the outer wall of the stress cone and the inner wall of the interface, which can not only prevent the stress cone from expanding, but also improve the sealing of the interface. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the combined cable connector according to an embodiment of this application.

[0022] Figure 2 yes Figure 1 A schematic diagram of section AA in the diagram.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Connector body; 11. Epoxy component; 12. Conductor; 13. Connecting part; 131. Connecting block; 132. Connecting groove; 2. Interface; 3. Stress cone; 31. Conical part; 4. End shell; 41. First shell; 42. Second shell; 5. Extrusion block; 6. Gap; 7. Elastic component; 8. Mounting ring; 100. Cable. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] See Figure 1-2 As shown, a combined cable connector for connecting cable 100 is illustrated. It includes a connector body 1, which comprises a hollow epoxy resin component 11, a hollow conductor 12 coaxially disposed within the epoxy resin component 11, and a connecting portion 13 coaxially disposed within the conductor 12. The epoxy resin component 11 has interfaces 2 at both ends, each interface 2 accommodating a stress cone 3. The stress cones 3 are hollow and each has a conical portion 31, the orientation of which aligns with the opening direction of the interfaces 2. The connecting portion 13 includes two connecting blocks 131 located at both ends of the conductor 12, each connecting block 131 having a connecting groove 132 for connecting wires.

[0027] In this embodiment, an annular gap 6 is formed between the stress cone 3 and the inner wall of the interface 2. End shells 4 are threaded to both ends of the epoxy component 11. The end shells 4 are hollow and contain coaxially arranged compression blocks 5. The compression blocks 5 are annular and fit into the gap 6. In this way, the compression blocks 5 embedded in the gap 6 can compress the outer wall of the stress cone 3 and the inner wall of the interface 2 respectively, which not only prevents the stress cone 3 from expanding but also improves the sealing performance of the interface 2.

[0028] In this embodiment, the outer wall surface of the tapered portion 31 matches and fits the inner wall surface of the extrusion block 5, so that the tapered portion 31 can be completely accommodated in the extrusion block 5, further improving the extrusion effect of the extrusion block 5 on the stress cone 3.

[0029] In this embodiment, an mounting ring 8 and an elastic element 7 are coaxially arranged inside the end shell 4. The mounting ring 8 is located on the inner wall of the end of the end shell 4 away from the extrusion block 5. The elastic element 7 is a spring, and its two ends are respectively connected to the extrusion block 5 and the mounting ring 8. The axis of the extrusion block 5, the axis of the elastic element 7, and the axis of the mounting ring 8 coincide with each other. After the end shell 4 is threaded to the end of the epoxy component 11, the extrusion block 5 can be continuously and tightly embedded in the gap 6 under the action of the spring. This not only further improves the extrusion effect of the extrusion block 5 on the inner wall of the stress cone 3 and the interface 2, but also prevents the extrusion block 5 from dislodging from the gap 6.

[0030] In this embodiment, the end shell 4 includes a first shell 41 sleeved on the end of the epoxy component 11 and a second shell 42 coaxially connected to the end of the first shell 41 away from the connector body 1. The inner diameter of the second shell 42 is smaller than the inner diameter of the first shell 41. The compression block 5, the elastic element 7, and the mounting ring 8 are all disposed in the first shell 41. The end of the second shell 42 has an opening for the cable 100 to be inserted. The end shell 4 can be connected to the connector body 1 through the first shell 41 with a larger inner diameter and can cover the cable 100 through the second shell 42 with a smaller inner diameter. This not only ensures the connection strength between the end shell 4 and the connector body 1, but also reduces the gap 6 between the end shell 4 and the cable 100.

[0031] During installation, the end of the cable 100 is inserted through the opening of the second housing 42, then passes through the stress cone 3 and extends into the port of the conductor 12, and finally is inserted into the connecting groove 132. The pressing block 5 can continuously press the stress cone 3, so that the stress cone 3 can continuously relieve the stress concentration of the cable 100.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A combined cable joint comprising a joint body (1), two ends of the joint body (1) are respectively provided with an interface (2), two interfaces (2) respectively accommodate a stress cone (3), characterized in that: The joint body (1) is sleeved with an end shell (4) at both ends, the end shell (4) is hollow and provided with an extrusion block (5) therein, the extrusion block (5) is embedded between the stress cone (3) and the inner wall of the interface (2).

2. A combined cable joint according to claim 1, characterized in that: An annular gap (6) is formed between the stress cone (3) and the inner wall of the interface (2), the extrusion block (5) is annular and embedded opposite the gap (6).

3. A combined cable joint according to claim 2, characterized in that: The stress cone (3) has a tapered portion (31) at one end towards the extrusion block (5), the outer wall surface of the tapered portion (31) matches and fits the inner wall surface of the extrusion block (5).

4. A combined cable joint according to claim 2, characterized in that: The extrusion block (5) is further connected with an elastic member (7) at one end away from the gap (6), the other end of the elastic member (7) is connected with the inner wall of the end shell (4).

5. A combined cable joint according to claim 4, characterised in that: The end shell (4) is further provided with a mounting ring (8) for mounting the elastic member (7), the axial center lines of the extrusion block (5), the elastic member (7) and the mounting ring (8) coincide with each other.

6. A combined cable joint according to claim 1, characterized in that: The end shell (4) comprises a first shell (41) sleeved on the end of the joint body (1), a second shell (42) coaxially communicated with one end of the first shell (41) away from the joint body (1), the inner diameter of the second shell (42) is smaller than that of the first shell (41).

7. A combined cable joint according to claim 1, characterized in that: The joint body (1) comprises a hollow epoxy member (11), a hollow conductor (12) arranged in the epoxy member (11), and a connecting portion (13) arranged in the conductor (12), the two end shells (4) are respectively sleeved on both ends of the epoxy member (11), and the two stress cones (3) are respectively connected to both ends of the conductor (12).

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