Cold contraction intermediate joint structure

Abstract

The utility model relates to the technical field of cable connection, in particular to a cold-shrink intermediate joint structure, which comprises an insulation protection tube body, cold-shrink protection sleeves are fixedly connected to the centers of two ends of the insulation protection tube body, one end of each cold-shrink protection sleeve extends into the insulation protection tube body, and the other end of each cold-shrink protection sleeve extends into the insulation protection tube body. The utility model relates to a cold shrinkage protective sleeve for a cable, which comprises an insulation protective tube body, the center of the insulation protective tube body is fixedly connected with a separation end head, the separation end head is internally provided with a communication cavity, and the communication cavity is internally and fixedly connected with two fixed conductive members. The fixed conductive part and the movable conductive part in the insulation protection pipe body are used for connecting cables, when the cable in a straightened state between two pieces of equipment is broken and the two cables cannot be directly connected together, the fixed conductive part and the conductive cable are used for switching between the two cables, and the fixed conductive part and the movable conductive part are used for connecting the two cables. And the connection between the two cables can still be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, in particular to a cold shrinkage intermediate joint structure. Background Art

[0002] The cable intermediate joint is an accessory used for the intermediate connection of the cable. Its main function is to make the line unobstructed, keep the cable sealed, and ensure the insulation level at the cable joint so that it can operate safely and reliably.

[0003] In the prior art, a cold-shrinkable cable intermediate joint with a flame-retardant structure proposed in patent application number "CN202122070476.0" includes a cable body, a core rope, a shielding cover, a first cold-shrinkable tube, an insulating filling layer, a second cold-shrinkable tube, an annular bakelite block, an annular flame-retardant plate, a cavity, a sand leakage hole and a sand cavity.

[0004] However, in the prior art, the cable intermediate connector is usually used to connect two cables together and then pass them through the connector. However, when the straightened cable between two devices is disconnected, the existing cable connector cannot connect the two cables together. Utility Model Content

[0005] The purpose of the utility model is to provide a cold shrinkage intermediate joint structure to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A cold shrink intermediate joint structure comprises an insulating protection tube body, wherein the centers of both ends of the insulating protection tube body are fixedly connected with cold shrink protective sleeves, one end of the cold shrink protective sleeves extends into the interior of the insulating protection tube body, and a separating end head is fixedly connected with the center of the insulating protection tube body, wherein a connecting cavity is provided in the separating end head.

[0008] Two fixed conductive parts are fixedly connected in the connecting cavity, and the fixed conductive parts are "L"-shaped. A conductive cable is fixedly connected between the two fixed conductive parts. A movable conductive part is arranged in the connecting cavity and on one side of the fixed conductive part. The movable conductive part and the fixed conductive part are used to clamp the cable extending into the insulating protection tube body from both sides.

[0009] Preferably, a first inclined guide portion is fixedly connected to one side of the fixed conductive member, a second inclined guide portion is fixedly connected to one side of the movable conductive member, a funnel-type guide component is fixedly connected to the insulating protection tube body, and a first elastic tightening ring is fixedly connected to one end of the funnel-type guide component.

[0010] Preferably, a connecting tube is fixedly connected inside the separating end head, a receiving groove is provided on the inner wall of the connecting cavity, an adjusting airbag is fixedly connected inside the receiving groove, and the adjusting airbag and the connecting tube are fixedly connected via a pipeline.

[0011] Preferably, movable plugs are provided inside both ends of the connecting pipe, a movable shaft is fixedly connected to one side of the movable plug, an insulating gasket is fixedly connected to one end of the movable shaft and located outside the connecting pipe, and the insulating gasket is fixedly connected to the movable conductive part.

[0012] Preferably, a rubber gasket is fixedly connected in the insulating protection tube body, and the rubber gasket is sleeved on the outer surface of the cold shrink protection sleeve. The outer surface of the insulating protection tube body is provided with an annular concave, and an elastic shrink ring is provided in the annular concave.

[0013] Preferably, both ends of the insulating protection tube body are fixedly connected with rubber tubes, the rubber tubes are sleeved on the outer surface of the cold shrink protection sleeve, and the outer surface of the rubber tube is sleeved with a second elastic tightening ring.

[0014] Beneficial effects of the utility model:

[0015] The utility model passes two cables through cold shrink protective sleeves at both ends and extends them into an insulating protection tube body, so that the fixed conductive member and the movable conductive member inside the insulating protection tube body connect the cables, and at the same time, the two fixed conductive members are connected through a conductive cable, so that the connection of the two cables in the insulating protection tube body is realized, making the cable connection safer, and when the cable in a straight state between two devices is disconnected and the two cables cannot be directly connected together, the fixed conductive member and the conductive cable are used as a transition between the two cables, so that the connection between the two cables can still be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 A cross-sectional view of the middle insulating protection tube body;

[0019] Figure 3 This utility model Figure 2 Structural schematic diagram of the middle separation end;

[0020] Figure 4 This utility model Figure 3 Schematic diagram of the structure of the connecting pipe.

[0021] The reference numerals in the figures are as follows:

[0022] 1. Insulating protection tube body, 2. Cold shrinkage protection sleeve, 3. Separating end, 4. Connecting cavity, 5. Fixed conductive part, 501. First inclined guide part, 6. Conductive cable, 7. Movable conductive part, 701. Second inclined guide part, 8. Funnel-type guide component, 9. First elastic tightening ring, 10. Connecting tube, 11. Accommodating groove, 12. Adjusting airbag, 14. Movable plug, 15. Movable shaft, 16. Insulating gasket, 17. Rubber gasket, 18. Elastic shrink ring, 19. Rubber tube, 20. Second elastic tightening ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] A cold shrink intermediate joint structure includes an insulating protection tube body 1, wherein the centers of both ends of the insulating protection tube body 1 are fixedly connected with cold shrink protective sleeves 2, one end of the cold shrink protective sleeve 2 extends to the interior of the insulating protection tube body 1, and a separating end 3 is fixedly connected to the center of the insulating protection tube body 1, and a connecting cavity 4 is opened in the separating end 3.

[0025] Two fixed conductive parts 5 are fixedly connected in the connecting cavity 4, and the fixed conductive parts 5 are "L"-shaped. A conductive cable 6 is fixedly connected between the two fixed conductive parts 5. A movable conductive part 7 is arranged in the connecting cavity 4 and on one side of the fixed conductive part 5. The movable conductive part 7 and the fixed conductive part 5 are used to clamp the cable extending into the insulating protection tube body 1 from both sides.

[0026] like Figure 1 and Figure 2 The insulating protection tube body 1 and the separation end 3 are both made of insulating material. The shrinkable protective sleeve 2 is fixed at the center of both ends of the insulating protection tube body 1. The fixed conductive part 5 is fixed on the separation end 3 and cannot move. The movable conductive part 7 is not fixed to the separation end 3 and can move.

[0027] A first inclined guide portion 501 is fixedly connected to one side of the fixed conductive member 5, a second inclined guide portion 701 is fixedly connected to one side of the movable conductive member 7, a funnel-shaped guide component 8 is fixedly connected inside the insulating protection tube body 1, and a first elastic tightening ring 9 is fixedly connected to one end of the funnel-shaped guide component 8.

[0028] like Figure 2 One end of the funnel-shaped guide component 8 is directed toward between the first inclined guide portion 501 and the second inclined guide portion 701, so that the cable entering the insulating protection tube body 1 can be more easily aligned to the position between the first inclined guide portion 501 and the second inclined guide portion 701, and the first elastic tightening ring 9 can tighten the cable passing through the funnel-shaped guide component 7.

[0029] A connecting pipe 10 is fixedly connected inside the separating end head 3, a receiving groove 11 is provided on the inner wall of the connecting cavity 4, an adjusting air bag 12 is fixedly connected inside the receiving groove 11, and the adjusting air bag 12 and the connecting pipe 10 are fixedly connected via a pipeline.

[0030] like Figure 2 , Figure 3 and Figure 4 The regulating airbag 12 is located in the accommodating groove 11 , and the regulating airbag 12 is connected to the connecting pipe 10 .

[0031] Movable plugs 14 are provided inside both ends of the connecting pipe 10, a movable shaft 15 is fixedly connected to one side of the movable plug 14, an insulating gasket 16 is fixedly connected to one end of the movable shaft 15 and located outside the connecting pipe 10, and the insulating gasket 16 is fixedly connected to the movable conductive member 7.

[0032] like Figure 3 and Figure 4 The movable plug 14 can seal the cavity inside the connecting pipe 10 , and the connecting pipe 10 has openings at both ends to facilitate the movable shaft 15 to pass through the outside of the connecting pipe 10 .

[0033] A rubber gasket 17 is fixedly connected inside the insulating protection tube body 1 , and the rubber gasket 17 is sleeved on the outer surface of the cold shrink protection sleeve 2 . The outer surface of the insulating protection tube body 1 is provided with an annular concave, and an elastic shrink ring 18 is provided in the annular concave.

[0034] like Figure 2 When the cable passes through the inside of the insulating protection tube body 1 into which the cold shrink protection sleeve 2 extends, the elastic shrink ring 18 tightens the rubber gasket 17, and the rubber gasket 17 tightens the cold shrink protection sleeve 2 to improve the sealing between the cold shrink protection sleeve 2 and the cable.

[0035] The two ends of the insulating protection tube body 1 are fixedly connected with rubber tubes 19 , which are sleeved on the outer surface of the cold shrink protection sleeve 2 , and the outer surface of the rubber tube 19 is sleeved with a second elastic tightening ring 20 .

[0036] like Figure 1 When the cable passes through the inside of the insulating protection tube body 1 into which the cold shrink protection sleeve 2 extends, the second elastic tightening ring 20 tightens the cold shrink protection sleeve 2 to improve the sealing between the cold shrink protection sleeve 2 and the cable.

[0037] The working principle of a cold shrinkage intermediate joint structure provided by the utility model is as follows:

[0038] When two cables need to be connected, the two cables are passed through the cold shrink protective sleeve 2 from both ends and extended into the insulating protective tube body 1. The cables pass through the funnel-shaped guide component inside the insulating protective tube body 1 and squeeze the second inclined guide part 701, so that the second inclined guide part 701 drives the movable conductive part 7 to move away from the fixed conductive part 6, so that the cables are smoothly extended between the fixed conductive part 5 and the movable conductive part 7;

[0039] When the movable conductive member 7 moves, it pushes the movable plug 14 into the connecting pipe 10 through the movable shaft 15, and the movable plug 14 presses the cavity in the connecting pipe 10 into the regulating airbag 12, so that the regulating airbag 12 expands;

[0040] When the cable extends between the fixed conductive part 5 and the movable conductive part 7, the airbag 12 is adjusted to generate a contraction force, so that the gas pushes the movable plug 14 from the inside of the connecting tube 10, and the movable plug 14 pushes the movable conductive part 7 toward the fixed conductive part 5 through the movable shaft 15, so that the fixed conductive part 5 and the movable conductive part 7 clamp the cable.

[0041] Compared with the related art, the cold shrinkage intermediate joint structure provided by the utility model has the following beneficial effects:

[0042] The utility model passes two cables through the cold shrink protective sleeves 2 at both ends and extends them into the insulating protection tube body 1, so that the fixed conductive member 5 and the movable conductive member 7 inside the insulating protection tube body 1 connect the cables, and at the same time, the two fixed conductive members 5 are connected through the conductive cable 6, so that the connection of the two cables in the insulating protection tube body 1 is realized, making the connection of the cables safer. When the cable in the straight state between the two devices is disconnected and the two cables cannot be directly connected together, the fixed conductive member 5 and the conductive cable 6 are used as a transition between the two cables, so that the connection between the two cables can still be realized.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A cold shrink intermediate joint structure, comprising an insulating protective tube body (1), characterized in that: A shrink protection sleeve (2) is fixedly connected at the center of both ends of the insulating protection tube body (1), one end of the shrink protection sleeve (2) extends into the interior of the insulating protection tube body (1), a separation end head (3) is fixedly connected at the center of the insulating protection tube body (1), and a communicating cavity (4) is provided in the separation end head (3); Two fixed conductive parts (5) are fixedly connected in the connecting cavity (4); the fixed conductive parts (5) are "L"-shaped; a conductive cable (6) is fixedly connected between the two fixed conductive parts (5); a movable conductive part (7) is arranged in the connecting cavity (4) and on one side of the fixed conductive part (5); the movable conductive part (7) and the fixed conductive part (5) are used to clamp the cable extending into the insulating protection tube body (1) from both sides.

2. A cold shrinkage intermediate joint structure according to claim 1, characterized in that: A first inclined guide portion (501) is fixedly connected to one side of the fixed conductive member (5), a second inclined guide portion (701) is fixedly connected to one side of the movable conductive member (7), a funnel-shaped guide component (8) is fixedly connected inside the insulating protection tube body (1), and a first elastic tightening ring (9) is fixedly connected to one end of the funnel-shaped guide component (8).

3. A cold shrinkage intermediate joint structure according to claim 1, characterized in that: A connecting pipe (10) is fixedly connected inside the separating end head (3), a receiving groove (11) is provided on the inner wall of the connecting cavity (4), an adjusting airbag (12) is fixedly connected inside the receiving groove (11), and the adjusting airbag (12) and the connecting pipe (10) are fixedly connected via a pipeline.

4. A cold shrinkage intermediate joint structure according to claim 3, characterized in that: Both ends of the connecting pipe (10) are provided with movable plugs (14), one side of the movable plug (14) is fixedly connected to a movable shaft (15), one end of the movable shaft (15) and located outside the connecting pipe (10) is fixedly connected to an insulating gasket (16), and the insulating gasket (16) and the movable conductive member (7) are fixedly connected.

5. A cold shrinkage intermediate joint structure according to claim 4, characterized in that: A rubber gasket (17) is fixedly connected inside the insulating protection tube body (1), and the rubber gasket (17) is sleeved on the outer surface of the cold shrink protection sleeve (2). The outer surface of the insulating protection tube body (1) is provided with an annular concave, and an elastic shrink ring (18) is provided inside the annular concave.

6. The cold shrinkage intermediate joint structure according to claim 1, characterized in that: The two ends of the insulating protection tube body (1) are fixedly connected with rubber tubes (19), the rubber tube (19) is sleeved on the outer surface of the cold shrink protection sleeve (2), and the outer surface of the rubber tube (19) is sleeved with a second elastic tightening ring (20).

Images