CN203983938U - A kind of cable intermediate joint - Google Patents

Abstract

The utility model discloses a kind of cable intermediate joint, in order to connect two cable end pieces, comprises a tube connector and two recipients.Tube connector be two ends to centre chap shape gradually, the two ends of tube connector are respectively equipped with some cracking of longitudinally running through.The core of two cable end pieces inserts respectively the two ends of tube connector.Two recipients are enclosed within respectively outside the two ends of tube connector and link together by making to crack to diminish and then the core of tube connector two ends and cable end piece is pushed to mobile extruded joint pipe in the middle of tube connector gradually.The utility model cable intermediate joint makes the aluminium hydraulic pressed connecting pipe imposed deformation of copper or aluminium material compare with the scheme coupling together with the core of cable end piece with the pressing tongs by pressing mold, can not make the core of cable end piece be destroyed, guarantee the useful life of cable intermediate joint.

Description

A cable intermediate joint

technical field

The utility model relates to a cable intermediate joint.

Background technique

Please refer to Figure 1, the cable intermediate connector is used to connect two cables, including two cable ends 1', a crimping tube 2', a conductive shielding tube 3' and a connector insulating sleeve 4'. The crimping tube 2' is sleeved outside the wire cores 11' of the two cable ends and the wire cores 11' of the two cable ends 1' are crimped together. The conductive shielding tube 3' is sleeved outside the crimping tube 2', and the two ends of the conductive shielding tube 3' are respectively sleeved on the main insulation 12' of the two cable ends 1'. Wherein, the conductive shielding pipe 3' can be prefabricated on the connector insulating sleeve 4'.

However, the above-mentioned intermediate joint uses crimping tube 2' to crimp the two cable end cores 11'. During crimping, the crimping tube 2' made of copper or aluminum is forcibly deformed by using a molded pliers, so as to connect with the cable conductor. , this technical solution will cause the wire core at the end of the cable to be damaged due to crimping.

Contents of the invention

The purpose of the utility model is to provide a cable intermediate joint which will not damage the wire core at the end of the cable during connection.

In order to achieve the above purpose, the utility model provides a cable intermediate joint, which is used to connect two cable ends, and includes a connecting pipe and two extruding barrels. The two ends of the connecting pipe gradually become thicker toward the middle, and the two ends of the connecting pipe are respectively provided with a plurality of longitudinally penetrating slits. The wire cores at the ends of the two cables are respectively inserted into the two ends of the connecting tube. The two extruding barrels are respectively sleeved on the two ends of the connecting pipe, and the opening is narrowed by gradually moving to the middle of the connecting pipe to extrude the connecting pipe so that the two ends of the connecting pipe and the wire core at the end of the cable are extruded and connected together.

Preferably, the inner walls at both ends of the connecting pipe are provided with internal threads, and the internal threads are snapped together with the wire cores at the end of the cable, which increases the stability and firmness of the connection.

Preferably, the connecting pipe and the two extruding cylinders are covered with pressure equalizing sleeves.

Preferably, it further includes a conductive shielding tube, the two ends of the conductive shielding tube are respectively sleeved on the main insulation of the two cable ends, and the voltage equalizing sleeve is located in the conductive shielding tube.

Preferably, an insulating intermediate head is further included, and the insulating intermediate head is covered on the conductive shielding pipe and the main insulation of the two cable ends.

Preferably, the conductive shielding pipe is prefabricated in the insulating intermediate head.

Preferably, the insulating intermediate head is a cold-shrinkable intermediate head or a heat-shrinkable intermediate head.

As mentioned above, the cable intermediate joint of the utility model includes a connecting pipe and two extruding cylinders. By inserting the wire cores at the ends of the two cables into the two ends of the connecting pipe respectively, the two extruding cylinders are respectively sleeved outside the two ends of the connecting pipe and passed through Gradually move to the middle of the connecting tube and squeeze the connecting tube to make the slit smaller, so that the two ends of the connecting tube and the wire core at the end of the cable are squeezed together, and the crimping tube made of copper or aluminum is forcibly deformed by the pressing pliers of the die Compared with the solution of connecting the wire cores at the end of the cable, the wire core at the end of the cable will not be damaged, ensuring the service life of the middle joint of the cable.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a cable intermediate joint in the background technology;

Fig. 2 is a structural schematic diagram of the cable intermediate joint of the present invention.

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Please refer to Fig. 2, the cable intermediate joint of the utility model is used to connect two cable ends, including two cable ends 1, a connecting pipe 2, two extruding barrels 3, a pressure equalizing sleeve 4, a conductive shielding tube 5 and an insulating middle head 6.

The two ends of the connecting pipe 2 gradually become thicker toward the middle, and this shape can facilitate the matching extrusion of the extruding cylinder 3 . Both ends of the connecting pipe 2 are respectively provided with a number of longitudinally penetrating slits (not shown in the figure), the purpose of the slits is to enable the two ends of the connecting pipe 2 to shrink by the size of the slits when they are squeezed. The inner diameter of the end, and then the two ends of the connecting pipe 2 are extruded and connected with the core of the cable end 1.

The wire cores 11 of the two cable ends 1 are respectively inserted into the two ends of the connecting pipe 2 . The two extruding cylinders 3 are respectively set outside the two ends of the connecting pipe 2, and gradually move toward the middle of the connecting pipe 2 to extrude the connecting pipe to make the slit smaller so that the two ends of the connecting pipe 2 are squeezed with the core 11 of the cable end 1. connected together.

Preferably, the inner walls at both ends of the connecting pipe 2 are provided with internal threads 21, and when squeezed, the internal threads 21 are snapped together with the core 11 of the cable end 1, which increases the stability and firmness of the connection.

The connecting pipe 2 and the two extruding cylinders 3 are covered with a pressure equalizing sleeve 4 .

Both ends of the conductive shielding tube 5 are respectively sleeved on the main insulation of the two cable ends 1 , and the equalizing sleeve 4 is located inside the conductive shielding tube 5 .

The insulating intermediate head 6 is covered on the conductive shielding pipe 5 and the main insulation of the two cable ends 1 .

Preferably, the conductive shielding pipe 5 is prefabricated in the insulating intermediate head 6 .

Preferably, the insulating intermediate head 6 is a cold-shrinkable intermediate head or a heat-shrinkable intermediate head.

The connection method of the cable intermediate joint of the utility model comprises the following steps:

Step 1, take two sections of cables, strip off the semi-conductive shielding layer at the end 1 of the cables, and cut off a section of the main insulation of the cables to expose the cable core 11;

Step 2, installing the insulating intermediate head 6 and the conductive shielding tube 5 on one of the cables in advance;

Step 3, put the two extruding cylinders 3 on the cores 11 of the two cable ends 1 respectively;

Step 4, insert the wire cores 11 of the two cable ends 1 into the two ends of the connecting pipe 2 respectively;

Step 5, put the two extruding cylinders 3 on the two ends of the connecting pipe 2 respectively, and gradually move the two extruding cylinders 3 toward the middle of the connecting pipe 2 to extrude the connecting pipe 2 so that the slits at both ends of the connecting pipe become smaller, As a result, the inner diameters at both ends of the connecting pipe become smaller, so that the two ends of the connecting pipe 2 and the wire core 11 of the cable end 1 are squeezed and connected together;

Step 6, place the conductive shielding tube 5 and the insulating intermediate head 6 on the main insulation 1 that is sleeved to the ends of the two cables.

Preferably, the inner walls at both ends of the connecting pipe 2 are provided with internal threads 21 , and the internal threads are snapped together with the wire core 11 of the cable end 1 .

Preferably, the connecting pipe 2 and the two extruding barrels 3 are covered with a pressure equalizing sleeve 4 .

Preferably, the insulating intermediate head 6 and the conductive shielding tube 5 are prefabricated together.

In summary, the cable intermediate joint of the present utility model includes a connecting pipe 2 and two extruding cylinders 3. By inserting the wire cores 11 of the two cable ends 1 into the two ends of the connecting pipe 2, the two extruding cylinders 3 are respectively sleeved on the connecting pipe. The two ends of the tube 2 are moved to the middle of the connecting tube 2 gradually to squeeze the connecting tube 2 to make the slit smaller so that the two ends of the connecting tube 2 and the core 11 of the cable end 1 are squeezed and connected together, and are connected through the compression die Compared with the technical scheme of connecting the wire core at the end of the cable, the crimping tube made of copper or aluminum is forcibly deformed by the advanced pliers, which will not damage the wire core at the end of the cable and ensure the service life of the middle joint of the cable.

The utility model is not limited to the above-mentioned specific embodiments, and those who are familiar with the technical field can also make various changes accordingly, but any equivalent or similar changes to the utility model should be covered in the claims of the utility model within range.

Claims (8)

1. A cable intermediate joint, used to connect two cable ends, is characterized in that: it comprises a connecting pipe and two extruding cylinders, and the two ends of the connecting pipe gradually become thicker toward the middle, and the two ends of the connecting pipe A number of longitudinal through-slits are respectively provided, and the wire cores at the ends of the two cables are respectively inserted into the two ends of the connecting pipe, and the two extruding barrels are respectively set outside the two ends of the connecting pipe and squeezed by gradually moving toward the middle of the connecting pipe. Crimping the connecting tube makes the slit smaller so that the two ends of the connecting tube and the wire core at the end of the cable are squeezed and connected together. 2. The cable intermediate joint according to claim 1, characterized in that: the inner walls at both ends of the connecting pipe are provided with internal threads. 3. The cable intermediate joint according to claim 1, characterized in that: the connecting pipe and the two extruding cylinders are covered with pressure equalizing sleeves. 4. The cable intermediate joint according to claim 3, characterized in that: it further comprises a conductive shielding tube, the two ends of the conductive shielding tube are respectively set on the main insulation of the two cable ends, and the voltage equalizing sleeve is located in the conductive shielding tube . 5. The cable intermediate joint according to claim 4, characterized in that it further comprises an insulating intermediate head, and the insulating intermediate head covers the conductive shielding tube and the main insulation of the two cable ends. 6. The cable intermediate joint according to claim 5, further comprising a conductive shielding tube prefabricated in the insulating intermediate head. 7. The cable intermediate joint according to claim 5 or 6, characterized in that: the insulating intermediate joint is a cold-shrinkable intermediate joint. 8. The cable intermediate joint according to claim 5 or 6, characterized in that: the insulating intermediate head is a heat-shrinkable intermediate head.