Cable joint packaging structure

Abstract

The utility model discloses a cable joint packaging structure, and belongs to the technical field of energy equipment. The connecting part comprises a connecting part and a terminal part; the tail end of the connecting part is fixedly connected with the terminal part, and a connecting hole is formed in the terminal part; the front end of the connecting part is provided with a connecting cavity used for crimping a cable in an inward concave manner, and the inner wall of the connecting cavity is provided with conductive paste. According to the cable joint packaging structure, by arranging the conductive paste, when the cable head is inserted into the inner cavity of the connecting part, the gap between the cable and the connecting cavity of the connecting part is filled with the conductive paste, and by arranging the protective film, after the connecting part is produced, cooled and formed, the inner wall of the connecting part is coated with the conductive paste, and then the protective film is laid on the surface of the conductive paste, so that the cable joint packaging structure is formed. The conductive paste is packaged and protected, air is isolated from the inner cavity of the connecting part, the inner wall of the connecting part is prevented from being oxidized, and the problem that the connecting cavity of the connecting part generates an oxidation reaction before the connecting part is used is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy equipment, in particular to a cable joint packaging structure. Background Art

[0002] Energy equipment includes various types of equipment and systems, which are mainly used to convert various energy sources into usable electrical energy, thermal energy or mechanical energy. For example, generators, motors, power transmission and distribution equipment, power supply devices, electrical instruments, high-voltage electrical appliances and low-voltage electrical appliances. When these devices are installed with cables, aluminum alloy cables need to be used for connection. With the large-scale application of aluminum alloy cables, people have analyzed the construction process and the causes of failures and found that poor connection contact of aluminum alloy cable connectors is the main cause of the above failures.

[0003] The reason why the current aluminum alloy cable joints are prone to accidents such as short circuits, overheating and fire is mainly because aluminum alloy cable joints are easily oxidized, and aluminum oxide is not conductive, which makes the conductive contact surface of the joint smaller, causing the aluminum alloy cable to creep more seriously, resulting in overcurrent, heating and other faults.

[0004] In the Chinese patent with the publication number CN201112591Y, a buried steel pipeline magnetic flux leakage corrosion detector probe cable joint packaging structure is provided, including welding shunts, connectors, the probe cable joints, the cables and the outer insulation layer are insulated and encapsulated in the form of a ferrule, however, only the cables and the outer insulation layer are wrapped with a polyurethane or heat-shrinkable fluorinated rubber protective layer at the welding point of each cable to protect the connection. However, after long-term application observation of aluminum alloy cable joints, it is found that most aluminum alloy cable joints have an oxide layer on the joint before use, and the oxide layer will affect the connection surface between the joint and the cable, reducing the dielectric properties of the connection; and after the cable is crimped, there is a gap between the cable and the cable head, and air and water vapor invade. The insulation encapsulation in the form of a ferrule alone cannot isolate the air and water vapor, resulting in the air and water vapor gradually oxidizing the cable and the inner wall of the cable joint during subsequent use, causing the electrical conductivity of the joint to decrease, resulting in problems such as overcurrent and heating. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a cable joint packaging structure.

[0006] The technical solution of the utility model is: a cable connector packaging structure, a connecting part and a terminal part; the tail end of the connecting part is fixedly connected to the terminal part, and a connecting hole is provided on the terminal part; the front end of the connecting part is recessed inward to provide a connecting cavity for crimping cables, and the inner wall of the connecting cavity is provided with conductive paste; the surface of the connecting part is sleeved with a packaging component, and the packaging component includes a protective sleeve arranged on the surface of the connecting part and a protective film arranged on the surface of the conductive paste, and the outer end of the protective film extends to the outside of the connecting part and is connected to the front end of the protective sleeve.

[0007] Furthermore, a connecting sleeve connected to the protective film is provided at the front end of the protective sleeve, and an easy-tear portion is fixedly installed at the rear end of the protective film, and the easy-tear portion is fixedly connected to the connecting sleeve.

[0008] Furthermore, a front extrusion groove is formed in a ring shape on one side of the surface of the connection portion, and a rear extrusion groove is formed in a ring shape on the other side of the surface of the connection portion.

[0009] Furthermore, the connecting portion is arranged in a cylindrical shape.

[0010] Furthermore, the protective sleeve is arranged in an annular shape, and the inner annular surface of the protective sleeve contacts the inner wall of the rear extrusion groove.

[0011] Furthermore, the material of the protective sleeve is rubber elastomer.

[0012] Furthermore, the material of the protective film is polyvinyl chloride, polyethylene and polypropylene.

[0013] Furthermore, the connecting parts are made of aluminum alloy, and the terminal parts are made of copper.

[0014] The beneficial technical effect of the utility model is as follows: by setting the conductive paste in the inner cavity of the connecting part, when the cable head is inserted into the inner cavity of the connecting part, the conductive paste fills the gap between the cable and the connecting cavity of the connecting part, thereby increasing the conductive area; and by setting the protective film, when the connecting part is cooled and formed during production, the conductive paste is coated on the inner wall of the connecting part, and then the protective film is spread on the surface of the conductive paste, so as to encapsulate and protect the conductive paste while isolating the air from contacting the inner cavity of the connecting part, thereby preventing oxidation of the inner wall of the connecting part, thereby avoiding oxidation reaction in the connecting cavity of the connecting part before use, thereby causing the oxide layer to affect the connecting surface of the connector and the cable, thereby reducing the conductive performance of the connection, and making the conductive contact surface of the connector smaller, thereby causing more serious creep of the aluminum alloy cable, thereby causing problems such as overcurrent and heat generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a front cross-section of the structure of the utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the structure enlargement at the center A;

[0017] Figure 3 It is a schematic front view of the structure of the utility model.

[0018] The numbers and letters in the figure represent the corresponding component names:

[0019] 1. Connecting part; 11. Connecting cavity; 2. Protective sleeve; 21. Connecting sleeve; 3. Terminal part; 31. Connecting hole; 4. Conductive paste; 5. Protective film; 51. Easy-tear part; 6. Front extrusion groove; 7. Rear extrusion groove. DETAILED DESCRIPTION

[0020] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] See attached Figure 1-3 As shown, the cable connector packaging structure of the first embodiment includes a connecting part 1 and a terminal part 3; the connecting part 1 is cylindrical, and the cylindrical shape of the connecting part 1 makes it easier for workers to use pliers to squeeze and deform it compared to a rectangular shape. The tail end of the connecting part 1 is fixedly connected to the terminal part 3, and a connecting hole 31 is provided on the terminal part 3. The terminal part 3 at the tail end of the connecting part 1 can be disassembled and connected to the electrical equipment or the power supply terminal through the connecting hole 31.

[0022] The front end of the connecting part 1 is recessed inward to form a connecting cavity 11 for crimping the cable, and the inner wall of the connecting cavity 11 is provided with a conductive paste 4, the cross-section of the conductive paste 4 is U-shaped, and the opening is arranged inward from narrow to wide on the inner wall of the connecting cavity 11, and the front end of the conductive paste 4 overflows the outside of the connecting part 1, wherein the shape of the conductive paste 4 is convenient for the subsequent cable to drive the conductive paste 4 into the inner wall of the connecting cavity 11 to fill the gap between the cable and the connecting cavity 11 when the cable is inserted.

[0023] The device is connected to the cable by first trimming one end of the cable end into a plane, then stripping off a portion of the insulating sleeve on the surface of the flat end of the cable, so that the flat end of the cable is exposed to the outside, and then inserting the exposed cable into the connecting cavity 11 inside the connecting part 1, and then clamping the connecting part 1 with tweezers so that the connecting part 1 is deformed and fixed on the cable end.

[0024] The surface of the connecting part 1 is provided with a packaging component, which includes a protective sleeve 2 arranged on the surface of the connecting part 1. The material of the protective sleeve 2 is a rubber elastomer. The rubber elastomer of the protective sleeve 2 makes the protective sleeve 2 elastic as a whole and can better fit the surface of the connecting part 1. A protective film 5 is provided in the inner cavity of the connecting part 1 and on the surface of the conductive paste 4. The material of the protective film 5 is polyvinyl chloride, polyethylene and polypropylene. The outer end of the protective film 5 extends to the outside of the connecting part 1 and is connected to the front end of the protective sleeve 2.

[0025] By providing the protective sleeve 2 in the packaging component, after the connecting part 1 is produced, the conductive paste 4 is smeared on the inner wall of the connecting part 1, and then the protective sleeve 2 is put on the connecting part 1, and the protective film 5 is inserted into the inner cavity of the connecting part 1 to make it fit the surface of the conductive paste 4, and the inner cavity of the connecting part 1 is sealed and protected, thereby avoiding that the inner wall of the connecting cavity 11 has produced an oxidation reaction before the connecting part 1 is used, thereby causing the oxide layer to affect the connecting surface of the connector and the cable, reducing the conductive performance of the connection, and making the conductive contact surface of the connector smaller, causing severe creep of the aluminum alloy cable, resulting in problems such as overcurrent and heat generation.

[0026] Furthermore, the protective sleeve 2 is arranged in a ring shape, and the inner ring surface of the protective sleeve 2 contacts the inner wall of the rear extrusion groove 7. The front end of the protective sleeve 2 is provided with a connecting sleeve 21 connected to the protective film 5, and the tail end of the protective film 5 is fixedly installed with an easy-to-tear portion 51. The easy-to-tear portion 51 is fixedly connected to the connecting sleeve 21, and the easy-to-tear portion 51 extends to the inside of the connecting sleeve 21. The cross-section of the connecting sleeve 21 is provided with a protective groove adapted to the easy-to-tear portion 51.

[0027] Since the protective film 5 needs to be removed before the connection part 1 is used, when removing the protective film 5, first grab one side of the protective film 5 and pull it outward to disconnect the connection between the easy-tear part 51 and the connecting sleeve 21, and then remove the protective film 5. According to actual usage requirements, the protective sleeve 2 can also be expanded and removed.

[0028] The annular setting of the protective sleeve 2 allows the protective sleeve 2 to be sleeved on the connecting part 1 during installation, and then the protective film 5 adheres to the surface of the conductive paste 4, so that the protective film 5 will not fall off easily when the connecting part 1 is stored. The setting of the easy-to-tear portion 51 can make the protective film 5 easier to tear. At the same time, due to the protective groove of the connecting sleeve 21, the easy-to-tear portion 51 can be protected, so that the easy-to-tear portion 51 can only be broken by tension, and will not be broken by external friction when placed, thereby providing protection.

[0029] Furthermore, a front extrusion groove 6 is formed in a ring shape on one side of the surface of the connecting portion 1 , and a rear extrusion groove 7 is formed in a ring shape on the other side of the surface of the connecting portion 1 .

[0030] By setting the front extrusion groove 6 and the rear extrusion groove 7, the protective sleeve 2 can be sleeved in the front extrusion groove 6, and when the protective film 5 is torn off, the protective sleeve 2 is stretched and taken out, and one end of the cable is inserted into the inner cavity of the connecting part 1, so that the conductive paste 4 fills the gap between the cable and the connecting cavity 11 to increase the conductive area, and then pliers are used to apply a certain extrusion force according to the position of the front extrusion groove 6 and the rear extrusion groove 7, so that the connecting part 1 can be deformed, and then the inner wall of the connecting part 1 squeezes and clamps the cable end, so as to realize the connection between the cable and the connecting part 1, and then the terminal part 3 is fixedly installed on the power connection end of the equipment by bolts.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A cable connector packaging structure, characterized in that: include: A connecting portion (1) and a terminal portion (3); The tail end of the connecting portion (1) is fixedly connected to the terminal portion (3), and a connecting hole (31) is provided on the terminal portion (3); The front end of the connecting portion (1) is recessed inwardly to form a connecting cavity (11) for crimping a cable, and the inner wall of the connecting cavity (11) is provided with conductive paste (4); The surface of the connecting portion (1) is provided with a packaging component, the packaging component comprising a protective sleeve (2) provided on the surface of the connecting portion (1) and a protective film (5) provided on the surface of the conductive paste (4), the outer end of the protective film (5) extending to the outside of the connecting portion (1) and connected to the front end of the protective sleeve (2).

2. The cable joint packaging structure according to claim 1, characterized in that: The front end of the protective sleeve (2) is provided with a connecting sleeve (21) connected to the protective film (5), and the rear end of the protective film (5) is fixedly mounted with an easy-tear portion (51), and the easy-tear portion (51) is fixedly connected to the connecting sleeve (21).

3. The cable joint packaging structure according to claim 1, characterized in that: A front extrusion groove (6) is formed in an annular shape on one side of the surface of the connection portion (1), and a rear extrusion groove (7) is formed in an annular shape on the other side of the surface of the connection portion (1).

4. The cable joint packaging structure according to claim 1, characterized in that: The connecting portion (1) is arranged in a cylindrical shape.

5. The cable joint packaging structure according to claim 3, characterized in that: The protective sleeve (2) is arranged in an annular shape, and the inner annular surface of the protective sleeve (2) is in contact with the inner wall of the rear extrusion groove (7).

6. The cable joint packaging structure according to claim 1, characterized in that: The material of the protective sleeve (2) is rubber elastomer.

7. The cable joint packaging structure according to claim 1, characterized in that: The material of the protective film (5) is polyvinyl chloride, polyethylene and polypropylene.

8. The cable joint packaging structure according to claim 1, characterized in that: The connecting portion (1) is made of aluminum alloy, and the terminal portion (3) is made of copper.

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