Connection structure of cable joint, cable joint assembly, connection method and cable thereof

Abstract

This invention relates to the field of cable technology, and more particularly to a cable connector connection structure, cable connector assembly, connection method, and cable thereof. The cable connector connection structure includes: a grounding component, a terminal block, an insulating component, and a first waterproof component. The grounding component is located at one end of the tail tube; the first end of the terminal block is connected to the grounding component and electrically connected to the cable inside the tail tube, and the second end of the terminal block is used for electrical connection to the cable to be connected; the insulating component is located inside the tail tube and at the end of the tail tube closest to the grounding component; the first waterproof component is located on the outside of the insulating component. This invention achieves the electrical connection between the tail tube and the cable through the grounding component and the terminal block; it prevents leakage at the connection end by setting the insulating component, ensuring electrical safety; and it enhances waterproof performance by setting the first waterproof component. Compared with the existing copper braided wire and connecting tube connection methods, this invention has the advantages of high reliability, good waterproof sealing, and convenient assembly.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to a connection structure, cable joint assembly, connection method, and cable thereof for a cable joint. Background Technology

[0002] Cables mainly consist of four parts: conductive cores, insulation layer, metal sheath, and outer sheath. The metal sheath varies significantly depending on the cable design, especially the differences between domestic and international cables, and between submarine and terrestrial cables. Generally, domestic cables use corrugated aluminum sheaths or lead sheaths, while international cables use copper wire, copper tape, or aluminum wire as the metal sheath layer. When installing cable joints, the cable's metal shield must be connected to the copper shell of the joint to ensure electrical connection, while also considering waterproof sealing performance.

[0003] For common corrugated aluminum-sheathed and lead-sheathed cables, lead enamel is typically used to directly connect the metal sheath to the copper end cap of the intermediate joint. This common method is not only efficient but also provides good sealing performance. However, for copper-wire-shielded or aluminum-wire-shielded cables, lead enamel cannot be used. Firstly, aluminum or copper wires are difficult to fix to the copper end cap using simple operations. Secondly, during the lead enamel process, the high temperature of the lead can easily leak from the gaps between the aluminum or copper wires onto the cable surface, causing burns. Therefore, lead enamel cannot meet the requirements for copper-wire-shielded or aluminum-wire-shielded cables. Currently, there is no unified standard for the connection method between the intermediate joint copper shell and the cable in copper-wire-shielded or aluminum-wire-shielded cables. A common method is to use copper braided wire with a copper-aluminum transition connecting tube for crimping to achieve electrical connection between the cable and the copper shell. The disadvantages of this method are: the braided wire is relatively loose and cannot be easily stuffed into the connecting tube; the braided wire and the connecting tube need to be crimped in four directions, totaling eight braided wires, which makes the connection position redundant, unable to achieve a good seal, and the sealing and waterproof performance is poor. In addition, it is greatly affected by the difference in the skill level of the installers, which increases the probability of problems with the joint. Summary of the Invention

[0004] This invention provides a cable connector connection structure, cable connector assembly, connection method, and cable thereof, to solve the defects of poor reliability and poor waterproof sealing of the electrical connection between copper wire shielded or aluminum wire shielded cables and intermediate joints in the prior art.

[0005] This invention provides a connection structure for a cable connector, comprising: The grounding component is located at one end of the tailpipe. The terminal block has a first end that is connected to the grounding component and electrically connected to the cable inside the tail pipe, and a second end that is used to electrically connect to the cable to be connected. An insulating element is disposed inside the tail tube and located at one end of the tail tube near the grounding element; The first waterproof component is located on the outside of the insulating component.

[0006] According to the connection structure of the cable connector provided by the present invention, multiple grounding components and multiple wiring terminals are provided, and the grounding components and multiple wiring terminals are evenly spaced along the circumferential direction of the tail tube.

[0007] According to the connection structure of the cable connector provided by the present invention, the grounding component is provided with a mounting hole; The connection structure of the cable connector also includes: A fastener, which is inserted into the mounting hole and presses the first end of the terminal block onto the grounding member.

[0008] According to the connection structure of the cable connector provided by the present invention, the insulating element extends outward from the tail tube in a stepped shape.

[0009] According to the connection structure of the cable connector provided by the present invention, the insulating element includes: Multiple rubber pads are stacked to form the stepped shape.

[0010] According to the connection structure of the cable connector provided by the present invention, the first waterproof component includes: The first waterproof tape is wrapped around the outside of the insulating component and the tailpipe.

[0011] The present invention also provides a cable connector assembly, comprising: the connection structure of the cable connector of the present invention.

[0012] The cable connector assembly provided according to the present invention further includes: The second waterproof component is located on the outside of the connection structure of the cable connector.

[0013] According to the cable connector assembly provided by the present invention, the second waterproof component includes: A composite material braid is wrapped around the outside of the connection structure of the cable connector; The second waterproof tape is wrapped around the outside of the composite material braid; Heat shrink tubing is fitted over the outside of the second waterproof strip.

[0014] The present invention also provides a connection method for a cable connector assembly according to the present invention, comprising: A grounding component is installed inside the tail tube. The number of terminals is determined according to the cross-sectional area of ​​the conductive wire. The conductive wire is divided into a preset number of strands according to the number of grounding components and the diameter of the terminals. Each strand of conductive wire is inserted into the corresponding terminal. Insulators are installed inside the tailpipe; A first waterproof component is installed on the outside of the insulation component and the tailpipe; The conductive wire is crimped inside the tail tube using terminals, and the terminals are fixed to the grounding component to form the connection structure of the cable joint. A second waterproof component is installed on the outside of the cable joint connection structure.

[0015] The present invention also provides a cable, comprising: the connection structure of the cable connector of the present invention, or the cable connector assembly of the present invention.

[0016] This invention provides a cable connector connection structure, comprising: a grounding component, a terminal block, an insulating component, and a first waterproof component. The grounding component is located at one end of the tail tube; the first end of the terminal block is connected to the grounding component and electrically connected to the cable inside the tail tube, and the second end of the terminal block is used for electrical connection to the cable to be connected; the insulating component is located inside the tail tube and at the end of the tail tube closest to the grounding component; the first waterproof component is located outside the insulating component. This cable connector connection structure provides an electrical connection between the tail tube and the cable through the grounding component and the terminal block; it prevents leakage at the connection end by providing the insulating component, ensuring electrical safety; and it enhances waterproof performance by providing the first waterproof component. Compared to the existing copper braided wire and connecting tube connection methods, this invention has the advantages of high reliability, good waterproof sealing, and convenient assembly.

[0017] Furthermore, the cable connector assembly and its connection method provided by the present invention have the same advantages as described above because they include the connection structure of the cable connector in the above embodiments of the present invention.

[0018] Furthermore, the cable provided by the present invention has the same advantages as described above because it includes the connection structure or cable connector assembly of the cable connector in the above embodiments of the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the connection structure of the cable connector provided in one embodiment of the present invention.

[0021] Figure 2 This is a partial structural schematic diagram of a cable connector assembly provided in one embodiment of the present invention.

[0022] Figure label: 1. Tail tube; 2. Grounding component; 3. Terminal block; 4. Conductive wire; 5. Cable to be connected; 6. Composite material braid; 7. Second waterproof tape; 8. Insulating component; 9. First waterproof tape; 10. Heat shrink tubing; 11. Fastener. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0027] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] The following is combined Figures 1 to 2 This invention describes a connection structure for a cable connector. The connection structure includes: a grounding component 2, a terminal block 3, an insulating component 8, and a first waterproof component.

[0029] Among them, the grounding component 2 is located at one end of the tail tube 1; the first end of the terminal 3 is electrically connected to the grounding component 2 and to the cable inside the tail tube 1, and the second end of the terminal 3 is used to electrically connect to the cable 5 to be connected; the insulating component 8 is located inside the tail tube 1 and at one end of the tail tube 1 near the grounding component 2; the first waterproof component is located on the outside of the insulating component 8.

[0030] The cable connector connection structure of the present invention realizes the electrical connection between the tail pipe 1 and the cable through the grounding component 2 and the terminal block 3; prevents leakage at the connection end by setting the insulating component 8 to ensure electrical safety; and enhances the waterproof performance by setting the first waterproof component.

[0031] Specifically, the grounding component 2 is installed at the end of the tail pipe 1 near the cable 5 to be connected. It serves two purposes: firstly, it enables electrical connection between the cable and the tail pipe 1; secondly, it effectively grounds the cable, ensuring safety. The grounding component 2 is a grounding block.

[0032] Specifically, an insulating component 8 is installed inside the tailpipe 1, which is located near the end of the tailpipe 1 and the grounding component 2 to prevent leakage at the connection end and ensure electrical safety.

[0033] Specifically, tailpipe 1 is connected to the first end of terminal block 3 via grounding component 2, and the second end of terminal block 3 is electrically connected to the cable 5 to be connected, so that tailpipe 1 achieves electrical conductivity with the cable through grounding component 2 and terminal block 3. During the connection process, the cable should first be divided into an appropriate number of strands, then inserted into the corresponding second end of terminal block 3, and finally the first end of terminal block 3 should be crimped onto grounding component 2 to achieve electrical conductivity with tailpipe 1.

[0034] Specifically, the first waterproof component is set on the outside of the grounding component 2; when arranging the first waterproof component, the insulating component 8 is first installed at the tail pipe 1, then the first waterproof component is arranged on its outside, and finally the terminal block 3 is connected to the grounding component 2 and the cable.

[0035] In addition, during the assembly process, the grounding component 2 and the insulating component 8 can be pre-installed on the tail pipe 1. The connection process only requires connecting the terminal block 3 to the grounding component 2 and the cable, and finally installing the first waterproof component. The overall assembly process is convenient and quick.

[0036] This invention provides a cable connector connection structure, comprising: a grounding component 2, a terminal block 3, an insulating component 8, and a first waterproof component. The grounding component 2 is located at one end of the tail tube 1; the first end of the terminal block 3 is inserted into the grounding component 2 and electrically connected to the cable inside the tail tube 1, and the second end of the terminal block 3 is used for electrical connection to the cable 5 to be connected; the insulating component 8 is located inside the tail tube 1 and at the end of the tail tube 1 closest to the grounding component 2; the first waterproof component is located on the outside of the insulating component 8. This cable connector connection structure provides an electrical connection between the tail tube 1 and the cable through the grounding component 2 and the terminal block 3; it prevents leakage at the connection end by providing the insulating component 8, ensuring electrical safety; and it enhances waterproof performance by providing the first waterproof component. Compared with the existing copper braided wire and connecting tube connection methods, this invention has the advantages of high reliability, good waterproof sealing, and convenient assembly.

[0037] In one embodiment of the present invention, multiple grounding components 2 and terminals 3 are provided, and the grounding components 2 and terminals 3 are evenly spaced along the circumference of the tail tube 1. Specifically, the number of grounding components 2 and terminals 3 is the same, which can be 2, 4, 6 or 8, etc., and they are arranged at equal intervals along the circumference of the tail tube 1. The conductive wires 4 (copper wires or aluminum wires) in the cable 5 to be connected are divided into 2 strands, 4 strands, 6 strands or 8 strands, etc., and each conductive wire 4 is inserted into the inner hole of the terminal 3 and crimped.

[0038] In one embodiment of the present invention, the grounding component 2 is provided with a mounting hole. The connection structure of the cable connector further includes a fastener 11, which is inserted into the mounting hole and presses the first end of the terminal 3 onto the grounding component 2. Specifically, the fastener 11 is a bolt, which is inserted into the mounting hole of the grounding component 2 and tightened to press and fix the terminal 3 onto the grounding component 2, maintaining electrical continuity. Optionally, the grounding component 2 can also be fixed to the tail pipe 1 by welding, and one end of the terminal 3 is fixed to the grounding component 2 by welding. The welding method provides a permanent connection that is difficult to disassemble and reassemble.

[0039] In one embodiment of the present invention, the insulating member 8 extends outward from the tail tube 1 in a stepped shape. Preferably, the insulating member 8 comprises multiple layers of rubber pads stacked together to form a stepped shape. In this embodiment, by providing the insulating member 8 extending outward from the tail tube 1 inside the tail tube 1, leakage problems in the tail tube 1 are avoided, thereby improving electrical safety. In this embodiment, multiple layers of rubber pads are stacked and arranged to form a stepped shape, ensuring electrical safety and facilitating installation inside the tail tube 1. Preferably, the rubber pads are made of ethylene propylene rubber.

[0040] In one embodiment of the present invention, the first waterproof component includes a first waterproof tape 9, which is wrapped around the outside of the insulating component 8 and the tail pipe 1. In this embodiment, the waterproof tape is wrapped around the outside of the insulating component 8 and the tail pipe 1 to improve the waterproof performance of the connection structure. Specifically, the waterproof tape is a type of flexible strip material used for sealing, moisture-proofing, and waterproofing. It can be self-adhesive rubber waterproof tape (made of ethylene propylene rubber, butyl rubber, or special synthetic rubber, etc.), PVC electrical insulating waterproof tape (made of polyvinyl chloride material + rubber pressure-sensitive adhesive), aluminum foil waterproof tape, or waterproof expansion tape, etc.

[0041] like Figure 2 As shown, the present invention also provides a cable connector assembly. This cable connector assembly includes the connection structure of the cable connector described in the above embodiments of the present invention.

[0042] The cable connector assembly provided by the present invention has the same advantages as described above because it includes the connection structure of the cable connector in the above embodiments of the present invention.

[0043] In one embodiment of the present invention, the cable connector assembly further includes a second waterproof component disposed on the outside of the connection structure of the cable connector. In this embodiment, by providing a second waterproof component on the outside of the connection structure of the cable connector, the overall waterproof performance of the cable connector assembly is improved.

[0044] In one embodiment of the present invention, the second waterproof component includes: a composite material braided body 6, a second waterproof tape 7, and a heat shrink tubing 10. The composite material braided body 6 is wrapped around the outside of the connection structure of the cable connector; the second waterproof tape 7 is wrapped around the outside of the composite material braided body 6; and the heat shrink tubing 10 is fitted onto the outside of the second waterproof tape 7. Specifically, the composite material braided body 6 is wrapped with glass fiber tape and epoxy resin, and after curing, the second waterproof tape 7 and PVC material are wrapped around it. The heat shrink tubing 10 is then applied externally, and the ends are further wrapped with putty, waterproof tape, and PVC material to further enhance the waterproof performance. The second waterproof tape 7 can be made of the same or different materials as the first waterproof tape 9.

[0045] The present invention also provides a connection method for the cable connector assembly according to the above embodiments of the present invention. The connection method includes: A grounding component 2 is installed inside the tail tube 1. The number of terminals 3 is determined according to the cross-sectional area of ​​the conductive wire 4. The conductive wire 4 is divided into a preset number of strands according to the number of grounding components 2 and the aperture of the terminals 3. Each strand of conductive wire 4 is inserted into the corresponding terminal 3. An insulating component 8 is installed inside the tailpipe 1; A first waterproof component is installed on the outside of the insulating component 8 and the tailpipe 1; The conductive wire 4 is crimped inside the tail tube 1 using the terminal 3, and the terminal 3 is fixed to the grounding component 2 to form a cable joint connection structure. A second waterproof component is installed on the outside of the cable joint connection structure.

[0046] A specific embodiment of the connection method for the cable connector assembly of the present invention is provided: A grounding block is installed inside the tail tube 1. Appropriate terminals 3 are provided according to the cross-section of the copper / aluminum wire. After cable processing, the copper / aluminum wire is folded over and fixed at the top. The copper / aluminum wire is divided into appropriate strands according to the number of grounding blocks and the diameter of the terminals 3. These strands are then inserted into the inner hole of the terminals 3 for crimping. Before crimping, a certain height of EPDM rubber pad is inserted between the tail tube 1 and the cable, forming a stepped shape extending to the outside. Waterproof tape is then wrapped around the outside before crimping. After crimping, the terminals 3 are fixed to the internal grounding block with bolts. Subsequently, a layer of waterproof tape is wrapped around the outside, followed by fiberglass tape and epoxy resin. After curing, waterproof tape and PVC material are wrapped around the outside. Heat shrink tubing 10 is then applied externally, and the ends are further wrapped with putty, waterproof tape, and PVC material to further enhance waterproofing. This invention is applicable to, but not limited to, intermediate joints of shielded copper or aluminum wire cables.

[0047] In summary, this invention incorporates a grounding block inside the tailpipe. Copper / aluminum wires are crimped together inside the tailpipe using terminals and connected to the grounding block, thus achieving an electrical connection between the copper / aluminum wires and the tailpipe. Furthermore, a series of measures, including wrapping with tape, enhance the overall waterproof performance of the joint. Compared to methods using copper braided wire and connecting tubing for the copper / aluminum wires, this invention better ensures the overall sealing performance and neat appearance of the joint, guaranteeing safe product operation.

[0048] The present invention also provides a cable. The cable includes: a connection structure for a cable connector as described in the above embodiments of the present invention, or a cable connector assembly as described in the above embodiments of the present invention.

[0049] The cable provided by the present invention has the same advantages as described above because it includes the connection structure or cable connector assembly of the cable connector in the above embodiments of the present invention.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connection structure for a cable connector, characterized in that, include: Grounding component (2) is located at one end of tailpipe (1); The terminal block (3) has a first end connected to the grounding component (2) and electrically connected to the cable inside the tail tube (1), and a second end used to electrically connect to the cable (5) to be connected. An insulating element (8) is disposed inside the tail tube (1) and located at one end of the tail tube (1) near the grounding element (2); The first waterproof component is located on the outside of the insulating component (8).

2. The connection structure of the cable joint according to claim 1, characterized in that, Multiple grounding components (2) and multiple wiring terminals (3) are provided, and the grounding components (2) and multiple wiring terminals (3) are evenly arranged at intervals along the circumference of the tail tube (1).

3. The connection structure of the cable connector according to claim 1, characterized in that, The grounding component (2) is provided with mounting holes; The connection structure of the cable connector also includes: Fastener (11) is inserted into the mounting hole and presses the first end of the terminal (3) onto the grounding member (2).

4. The connection structure of the cable joint according to claim 1, characterized in that, The insulating element (8) extends outward from the tail tube (1) in a stepped shape.

5. The connection structure of the cable joint according to claim 4, characterized in that, The insulating element (8) includes: Multiple rubber pads are stacked to form the stepped shape.

6. The connection structure of the cable joint according to any one of claims 1 to 5, characterized in that, The first waterproof component includes: The first waterproof tape (9) is wrapped around the outside of the insulating element (8) and the tail tube (1).

7. A cable connector assembly, characterized in that, include: The connection structure of the cable connector according to any one of claims 1 to 6.

8. The cable connector assembly according to claim 7, characterized in that, Also includes: The second waterproof component is located on the outside of the connection structure of the cable connector.

9. The cable connector assembly according to claim 8, characterized in that, The second waterproof component includes: The composite material braid (6) is wrapped around the outside of the connection structure of the cable connector; The second waterproof strip (7) is wrapped around the outside of the composite material braid (6); Heat shrink tubing (10) is fitted onto the outside of the second waterproof strip (7).

10. A method for connecting a cable connector assembly according to any one of claims 7 to 9, characterized in that, include: A grounding component (2) is installed inside the tail tube (1). The number of terminals (3) is determined according to the cross-sectional area of ​​the conductive wire (4). The conductive wire (4) is divided into a preset number of strands according to the number of grounding components (2) and the aperture of the terminals (3). Each strand of conductive wire (4) is inserted into the corresponding terminal (3). An insulating component (8) is installed inside the tailpipe (1); A first waterproof component is provided on the outside of the insulating component (8) and the tail pipe (1); The conductive wire (4) is crimped inside the tail tube (1) using the terminal (3), and the terminal (3) is fixed on the grounding part (2) to form a cable joint connection structure; A second waterproof component is installed on the outside of the cable joint connection structure.

11. A cable, characterized in that, include: The connection structure of the cable connector according to any one of claims 1 to 6, or the cable connector assembly according to any one of claims 7 to 9.

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