CN214898977U

CN214898977U - Cable joint

Info

Publication number: CN214898977U
Application number: CN202120936791.4U
Authority: CN
Inventors: 刘清康; 唐平; 张宸菁; 田源; 李其生; 曹正英
Original assignee: SICHUAN HUAXI INSTALLATION ENGINEERING CO LTD
Current assignee: SICHUAN HUAXI INSTALLATION ENGINEERING CO LTD
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-26
Anticipated expiration: 2031-04-30

Abstract

The utility model provides an encapsulate effectual cable joint. The insulating layer of the connector body is also internally provided with a grounding piece; the grounding piece is arranged along the length direction of the joint cable and is positioned between the two ends of the joint cable; one end of the grounding piece is a first connecting end, and the other end of the grounding piece is a second connecting end; the first connecting end is exposed out of the insulating layer and is close to the cable end; the second connecting end is positioned in the insulating layer and is close to the clamping end; and a grounding block is arranged on the insulating layer corresponding to the second connecting end, penetrates through the insulating layer and is connected with the grounding piece. After the primary cable is connected with the cable joint, the second grounding ring, the first grounding wire, the first grounding ring and the grounding piece are all packaged, the second grounding wire is connected through the grounding bolt on the insulating layer, the integrity of the joint is good, the packaging effect is good, and the later maintenance is convenient.

Description

Cable joint

Technical Field

The utility model belongs to the technical field of the cable junction, concretely relates to cable joint.

Background

The primary cable of the navigation aid light in the navigation aid light system of the civil airport and the isolation transformer are generally connected in series through a cable connector. The navigation light primary cable is hereinafter referred to as a primary cable. The primary cable in the loop is connected with the isolation transformer in series through the cable connector to form the loop, so that the normal communication of the loop is ensured, and the navigation aid lamp in the loop is further ensured to be normally lightened. The cable connector includes a male connector and a female connector arranged in pairs. Typically, the cable end of the male connector is connected to the primary cable and the cable end of the female connector is connected to the cable of the isolation transformer. The male connector is provided with a contact pin at the end far away from the primary cable, the female connector is provided with a jack at the end far away from the isolation transformer cable, and the contact pin is inserted into the jack to conduct a loop. The primary cable and the cable of the isolation transformer need to be grounded so as to ensure electrical safety.

As shown in fig. 1, taking a male connector as an example, a conventional cable connector includes a connector body, one end of the connector body is a cable end, and the other end of the connector body is a clamping end. The connector body comprises a contact pin 3, a contact pin 4, a connector cable 1 and an insulating layer 2 wrapping the connector cable 1. One end of the joint cable 1 extends out of the insulating layer 2, and the direct 4 is connected with the core wire of the end part of the joint cable 1 extending out of the insulating layer 2 to form the cable end of the joint body. The other end that connects cable 1 is located insulating layer 2, and contact pin 3 links to each other with the heart yearn that is located 1 tip of joint cable in insulating layer 2, forms the joint end that connects the body. One section of the pin 3 is located inside the insulating layer 2, and the other section is located outside the insulating layer 2. The stem 4 is typically an open-ended hollow tube structure. The core wire of the primary cable 5 and the core wire of the end portion of the joint cable 1 extending outside the insulating layer 2 are connected by direct 4 crimping. The end part of the primary cable 5 connected with the direct cable 4 is provided with an exposed copper armor 6, one end of an original grounding wire 7 is connected with the copper armor 6 of the primary cable 5, and the other end is connected with the grounding of the isolation transformer. The joint of the cable end of the connector body and the primary cable 5 is wrapped by an insulating adhesive tape, and then the original grounding wire 7 and the primary cable 5 are wrapped and molded by the original sleeve 8, so that the structure shown in fig. 2 is finally formed. The original grounding wire 7 is led out from the side of the primary cable 5 along the original sleeve 8, and the original grounding wire 7 is positioned between the original sleeve 8 and the sheath of the primary cable 5. The ground wire is usually a copper braided band structure, and the sleeve is usually a heat-shrinkable tube or a cold-shrinkable tube.

The grounding method has the following problems: firstly, during maintenance operation, the original grounding wire is easy to tear the original sleeve from the wire outlet, and safety accidents are easy to cause. Secondly, gaps are formed between the original sleeve and the primary cable sheath, accumulated water in the isolation transformer box easily enters joints along the original grounding wire and the gaps, so that the insulation resistance of a loop is reduced, and the primary cable connector of the navigational light is burnt in severe cases. If the cable connector is burnt out once, the navigation light loop forms an open circuit, the navigation lamps in the loop are completely extinguished, and the taking-off, landing and sliding guidance cannot be provided for the aircraft at night and in the low visibility condition, so that the safe operation of an airport is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a cable joint that encapsulation effect is good is provided.

The utility model provides a technical scheme that its technical problem adopted is: the cable joint comprises a joint body, wherein one end of the joint body is a cable end, and the other end of the joint body is a clamping end; the connector body comprises a connector cable and an insulating layer wrapping the connector cable, one end of the connector cable extends out of the insulating layer, and the other end of the connector cable is positioned in the insulating layer; a grounding piece is also arranged in the insulating layer of the connector body;

the grounding piece is arranged along the length direction of the joint cable and is positioned between the two ends of the joint cable;

one end of the grounding piece is a first connecting end, and the other end of the grounding piece is a second connecting end; the first connecting end is exposed out of the insulating layer and is close to the cable end; the second connecting end is positioned in the insulating layer and is close to the clamping end;

and a grounding block is arranged on the insulating layer corresponding to the second connecting end, penetrates through the insulating layer and is connected with the grounding piece.

Furthermore, the grounding piece is of a cylinder structure with openings at two ends and is wrapped on the joint cable.

Further, the grounding piece is a grounding net.

Furthermore, the grounding clamp is positioned in the insulating layer;

the grounding hoop is clamped with the grounding piece and is positioned at the second connecting end; the grounding clamp is connected with the grounding block.

Further, the insulating layer is a rubber product.

Further, the grounding piece is made of copper.

Further, the grounding block is a grounding bolt.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an encapsulate effectual cable joint. After the primary cable is connected with the cable joint, the second grounding ring, the first grounding wire, the first grounding ring and the grounding piece are all packaged, the second grounding wire is connected through the grounding bolt on the insulating layer, the integrity of the joint is good, the packaging effect is good, and the later maintenance is convenient.

Drawings

FIG. 1 is a schematic diagram of a prior art cable connector connected to a primary cable;

FIG. 2 is a schematic diagram of an outgoing line of an original grounding wire after being wrapped by an original sleeve in the background art;

fig. 3 is a schematic structural diagram of the present invention;

FIG. 4 is a schematic view of an embodiment of the present invention, directly connected to the core of a primary cable;

fig. 5 is a schematic diagram of the first grounding ring and the second grounding ring connected by the first grounding wire according to the embodiment of the present invention;

fig. 6 is a schematic diagram of the installation of the cable joint and the primary cable according to the embodiment of the present invention;

reference numerals: 1-splice cable; 2-an insulating layer; 3-inserting a pin; 4-direct; 5-primary cable; 6-copper armor; 7-original ground wire; 8-original sleeve; 9-a ground member; 901-a first connection end; 902-a second connection end; 10-a grounding clamp; 11-a ground block; 12-a first ground line; 13-a second ground line; 14-a first ground ring; 15-a second ground ring; 16-sleeve.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in the attached drawings, the cable joint comprises a joint body, wherein one end of the joint body is a cable end, and the other end of the joint body is a clamping end; the connector body comprises a connector cable 1 and an insulating layer 2 wrapping the connector cable 1, one end of the connector cable 1 extends out of the insulating layer 2, and the other end of the connector cable 1 is located in the insulating layer 2; a grounding piece 9 is also arranged in the insulating layer 2 of the joint body; the grounding piece 9 is arranged along the length direction of the joint cable 1 and is positioned between two ends of the joint cable 1; one end of the grounding piece 9 is a first connecting end 901, and the other end is a second connecting end 902; the first connection end 901 is exposed out of the insulating layer 2 and close to the cable end; the second connecting end 902 is located in the insulating layer 2 and is close to the clamping end; and a grounding block 11 is arranged on the insulating layer 2 corresponding to the second connecting end 902, and the grounding block 11 penetrates through the insulating layer 2 and is connected with the grounding piece 9.

Processing the primary cable 5, specifically, firstly, removing the sheath of the primary cable 5 with the end part as a starting point, wherein the length of the sheath is 10 cm; secondly, after 8.5cm long copper armor is stripped by taking the end part as a starting point, the semiconductor layer is exposed; next, the semiconductor layer was removed from the end portion to expose a 1.5 cm-long cable core. Fourth, the end of the core of the primary cable 5 is processed into a suitable shape, such as a conical shape.

The core wire of the primary cable 5 is inserted into the direct wire 4, and the direct wire 4 is firmly pressed with the core wire of the primary cable 5 by using a wire crimper. The joint of the direct 4 and the primary cable 5 is wrapped by an insulating tape, and then the insulating tape is wrapped, so that the sealing and insulating effects are ensured. The first connection end 901 of the ground connection 9 is connected to the copper shield 6 of the primary cable 5 by a first ground wire 12. A first grounding ring 14 is mounted on the first connection end 901, and a second grounding ring 15 is mounted on the copper shield 6 of the primary cable 5. The first ground line 12 has one end connected to the first ground ring 14 and the other end connected to the second ground ring 15. The connection is preferably by welding. And then the first grounding ring 14, the first grounding wire 12 and the second grounding ring 15 are wrapped by insulating adhesive tapes to form a closed structure. Finally, the sleeve 16 is fitted over the closure structure so as to be completely enclosed. The grounding block 11 is connected to the ground on the isolation transformer by a second grounding line 13. The grounding block 11 is solidified through the insulating layer 2, the integrity of the joint is good, and the packaging effect is good.

The grounding member 9 has various embodiments, and may be a sheet structure or a spiral structure wound on the joint cable 1. Since the ground member 9 is located between both end portions of the joint cable 1, the ground member 9 is insulated from the joint cable 1 by the insulating layer which the joint cable 1 itself has. In the embodiment shown in fig. 3, the grounding member 9 is a cylindrical structure with two open ends and is wrapped on the joint cable 1. The grounding member 9 is preferably a grounding grid.

In order to ensure a stable connection of the grounding block 11 to the grounding piece 9, it is preferable to further include a grounding clip 10 located inside the insulating layer 2; the grounding hoop 10 is clamped with the grounding piece 9 and is positioned at the second connecting end 902; the grounding clip 10 is connected to a grounding block 11. The grounding clamp 10 tightly clamps the grounding piece 9 and the joint cable 1, and the installation is stable. When grounding member 9 is the ground net, ground connection piece 11 links to each other with grounding member 9 through ground connection clamp 10, and ground connection clamp 10 is the loop configuration usually, guarantees ground connection piece 11 and grounding member 9's stable connection, and ground connection is effectual.

The insulating layer 2 may be an insulating fabric, a plastic, or the like, and preferably, the insulating layer 2 is a rubber.

The grounding piece 9 can be made of aluminum, and preferably, the grounding piece 9 is made of copper.

The grounding block 11 has various structural forms, such as a column structure, a plate structure and the like, and preferably, the grounding block 11 is a grounding bolt. The bolt is easy to obtain and convenient to install.

The utility model discloses a concrete implementation can be seen from the implementation, the utility model provides an encapsulate effectual cable joint. After the primary cable is connected with the cable joint, the second grounding ring, the first grounding wire, the first grounding ring and the grounding piece are all packaged, the second grounding wire is connected through the grounding bolt on the insulating layer, the integrity of the joint is good, the packaging effect is good, and the later maintenance is convenient.

Claims

1. The cable joint comprises a joint body, wherein one end of the joint body is a cable end, and the other end of the joint body is a clamping end; the connector body comprises a connector cable (1) and an insulating layer (2) wrapping the connector cable (1), one end of the connector cable (1) extends out of the insulating layer (2), and the other end of the connector cable is located in the insulating layer (2); the method is characterized in that: a grounding piece (9) is also arranged in the insulating layer (2) of the joint body;

the grounding piece (9) is arranged along the length direction of the joint cable (1) and is positioned between the two ends of the joint cable (1);

one end of the grounding piece (9) is a first connecting end (901), and the other end of the grounding piece is a second connecting end (902); the first connecting end (901) is exposed out of the insulating layer (2) and is close to the cable end; the second connecting end (902) is positioned in the insulating layer (2) and is close to the clamping end;

and a grounding block (11) is arranged on the insulating layer (2) corresponding to the second connecting end (902), and the grounding block (11) penetrates through the insulating layer (2) and is connected with the grounding piece (9).

2. The cable joint of claim 1, wherein: the grounding piece (9) is of a cylinder structure with openings at two ends and is wrapped on the joint cable (1).

3. The cable joint of claim 2, wherein: the grounding piece (9) is a grounding net.

4. A cable joint according to any one of claims 1 to 3, wherein: the grounding clamp is positioned in the insulating layer (2);

the grounding hoop (10) is clamped with the grounding piece (9) and is positioned at the second connecting end (902); the grounding hoop (10) is connected with the grounding block (11).

5. The cable joint of claim 1, wherein: the insulating layer (2) is a rubber product.

6. The cable joint of claim 1, wherein: the grounding piece (9) is made of copper.

7. The cable joint of claim 1, wherein: the grounding block (11) is a grounding bolt.