Outdoor cold shrinkable cable terminal head with good sealing performance

Abstract

The utility model relates to the technical field of cable field, an outdoor cold shrink cable terminal head that good sealing, including cold shrink insulation pipe and phase color strip, the outer wall of cold shrink insulation pipe is fixedly connected with phase color strip, the inner wall of cold shrink insulation pipe is movably connected with branch cable. The barrier is formed through the thread connection between the cold shrink terminal head cover and the sealing cover, which can effectively isolate moisture and dust by close fitting, the first outer convex ring in the splicing mechanism cooperates with the sleeve, further enhances the sealing performance of the connecting part, the fixed sleeve and the second outer convex ring in the assembling mechanism provide additional tightening protection for the connecting part through the abutting action of the inner and outer walls, the design of multilayer wrapping not only improves the overall sealing property, but also can maintain stable protection effect when the cable produces slight displacement due to external factors, thereby comprehensively guaranteeing the reliability and durability of the connecting part.

Description

Technical Field

[0001] This utility model relates to the technical field of cables, specifically to an outdoor cold-shrink cable termination with good sealing performance. Background Technology

[0002] Cold shrink cable terminations are components made by injection vulcanization of elastomer materials in the factory, followed by diameter expansion and the addition of spiral support components to form various cable accessories. During installation, the cold shrink cable termination is placed on the treated cable end or joint, and the internal spiral support components are pulled out. The cold shrink cable termination shrinks and wraps around the cable due to its own elasticity.

[0003] For example, the outdoor cold-shrink cable termination with good sealing performance, authorized by announcement number "CN221929296U", solves the problem of reduced contact area and reduced sealing effect in existing outdoor cold-shrink cable terminations. The aforementioned design, using a first inner convex ring, a first outer convex ring, a second inner convex ring, a second outer convex ring, a third inner convex ring, and a third outer convex ring, increases the contact area, thereby improving sealing performance. It also has a certain locking function to prevent movement between the cold-shrink three-piece sleeve, the cold-shrink insulating sleeve, the cold-shrink termination sleeve, and the cold-shrink sealing sleeve, making the covering more secure. However, considering that existing outdoor cold-shrink cable terminations with good sealing performance have exposed connections, in actual use, external dust and moisture can easily penetrate, thus affecting the sealing performance and service life of the cable termination. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing outdoor cold shrink cable terminations with good sealing properties are exposed, making them susceptible to intrusion by external dust and moisture during actual use. Therefore, this invention proposes an outdoor cold shrink cable termination with good sealing properties.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an outdoor cold-shrink cable terminal head with good sealing performance, comprising a cold-shrink insulating tube and a phase color strip, wherein the outer wall of the cold-shrink insulating tube is fixedly connected to the phase color strip, the inner wall of the cold-shrink insulating tube is movably connected to a branch cable, the end of the branch cable is electrically connected to a terminal, and the end of the cold-shrink insulating tube is connected to a splicing mechanism.

[0006] The phase color strips in this feature are made of highly elastic material, which can fit tightly against the outer wall of the cold-shrink insulation tube, making it easy for staff to quickly identify the cable phases.

[0007] Preferably, the splicing mechanism includes a first outer convex ring, the inner wall of the first outer convex ring is fixedly connected to the cold shrink insulating tube, the outer wall of the first outer convex ring abuts against the cold shrink terminal head sleeve, the outer wall of the first outer convex ring abuts against the sleeve, and the end of the sleeve is threadedly connected to the cold shrink terminal head sleeve.

[0008] The various components in this splicing mechanism work together to form multiple layers of sealing protection, effectively preventing external factors such as moisture and dust from corroding the cable termination and ensuring its long-term stable operation in harsh environments. Preferably, the outer wall of the cold-shrink terminal head sleeve is fixedly connected to the umbrella skirt, and the lower end of the cold-shrink insulating tube is connected to an assembly mechanism.

[0009] This umbrella skirt design increases the creepage distance, improves the insulation performance of the cable termination, and effectively prevents rain, snow, and other liquids from flowing in along the outer wall, thus providing lower-end protection.

[0010] Preferably, the assembly mechanism includes a fixed sleeve and a second outer convex ring fixedly connected, the inner wall of the fixed sleeve abutting against the cold shrink insulating tube, the outer wall of the second outer convex ring abutting against the cold shrink insulating tube, and the inner wall of the fixed sleeve fixedly connected to the inner convex ring.

[0011] This assembly mechanism facilitates the quick connection and disassembly of the cold-shrink insulation tube and other components, improving installation efficiency and ensuring tightness at the connection. In addition, the fixing sleeve and the second outer protruding ring in the assembly mechanism form an additional tightening sealing barrier through the abutment of the inner and outer walls, providing higher stability and reliability for the overall structure of the cable termination.

[0012] Preferably, the end of the cold shrink terminal head sleeve is fixedly connected to the sealing sleeve, and the inner wall of the sealing sleeve is threadedly connected to the terminal.

[0013] This design, featuring a threaded connection between the sealing sleeve and the terminal, not only enhances the tightness of the connection between the two but also facilitates disassembly and assembly during later maintenance. In addition, the sealing sleeve is made of a special material with excellent weather resistance and anti-aging properties, enabling it to adapt to complex and changing outdoor environmental conditions and further extending the service life of the cable termination.

[0014] Preferably, the inner wall of the second outer convex ring is fixedly connected to the cold shrink finger sleeve, and the main cable is installed on the inner wall of the lower end of the cold shrink finger sleeve.

[0015] The design of this cold-shrink finger sleeve allows for a better fit to the main cable. The way its inner wall is movably connected to the main cable ensures the flexibility of the connection and can reduce wear caused by cable movement or vibration to a certain extent.

[0016] The outdoor cold-shrink cable termination head with good sealing performance proposed in this utility model has the following advantages: the cold-shrink termination head sleeve and the sealing sleeve form a barrier through a threaded connection, and their tight fit can effectively isolate moisture and dust. The first outer convex ring in the splicing mechanism cooperates with the sleeve to further enhance the sealing performance of the connection. The fixing sleeve and the second outer convex ring in the assembly mechanism provide additional tightening protection for the connection part through the abutment of the inner and outer walls. The multi-layer wrapping design not only improves the overall sealing performance, but also maintains a stable protective effect when the cable undergoes slight displacement due to external factors, thereby comprehensively ensuring the reliability and durability of the connection part. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the assembly of the cold shrink insulation tube and branch cable; Figure 3 for Figure 1 Schematic diagram of the cooling shrink sleeve and main cable; Figure 4 for Figure 2 Schematic diagram of the splicing mechanism; Figure 5 for Figure 4 Schematic diagram of the middle sleeve structure; Figure 6 for Figure 2 Schematic diagram of the assembly mechanism.

[0018] In the diagram: 1. Cold shrink insulating tube, 2. Phase color strip, 3. Branch cable, 4. Terminal, 5. Splicing mechanism, 501. First outer convex ring, 502. Cold shrink terminal head sleeve, 503. Sleeve, 6. Umbrella skirt, 7. Assembly mechanism, 701. Fixing sleeve, 702. Inner convex ring, 703. Second outer convex ring, 8. Sealing sleeve, 9. Cold shrink finger sleeve, 10. Main cable. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: Please see Figure 1-6 In this embodiment, an outdoor cold-shrink cable terminal head with good sealing performance includes a cold-shrink insulating tube 1 and a phase color strip 2. The outer wall of the cold-shrink insulating tube 1 is fixedly connected to the phase color strip 2, the inner wall of the cold-shrink insulating tube 1 is movably connected to the branch cable 3, the end of the branch cable 3 is electrically connected to the terminal 4, and the end of the cold-shrink insulating tube 1 is connected to a splicing mechanism 5.

[0020] The splicing mechanism 5 includes a first outer protruding ring 501, which forms a barrier between the cold shrink terminal head sleeve 502 and the sealing sleeve 8 through a threaded connection, so that the sealing sleeve 8 and the cold shrink terminal head sleeve 502 are spliced ​​and protected. The inner wall of the first outer protruding ring 501 is fixedly connected to the cold shrink insulating tube 1, the outer wall of the first outer protruding ring 501 abuts against the cold shrink terminal head sleeve 502, the outer wall of the first outer protruding ring 501 abuts against the sleeve 503, and the end of the sleeve 503 is threadedly connected to the cold shrink terminal head sleeve 502. The cold shrink terminal head sleeve 502 and the sealing sleeve 8 form a barrier through a threaded connection. Their tight fit can effectively isolate moisture and dust. The first outer convex ring 501 and the sleeve 503 in the splicing mechanism 5 cooperate with each other to further enhance the sealing performance of the connection. The fixing sleeve 701 and the second outer convex ring 703 in the assembly mechanism 7 provide additional tightening protection for the connection part through the abutment of the inner and outer walls. The multi-layer wrapping design not only improves the overall sealing performance, but also maintains a stable protective effect when the cable undergoes slight displacement due to external factors, thereby fully ensuring the reliability and durability of the connection part.

[0021] The outer wall of the cold shrink terminal head sleeve 502 is fixedly connected to the umbrella skirt 6. The lower end of the cold shrink insulating tube 1 is connected to the assembly mechanism 7. The assembly mechanism 7 includes a fixed sleeve 701 and a second outer protruding ring 703 fixedly connected. The inner wall of the fixed sleeve 701 abuts against the cold shrink insulating tube 1, the outer wall of the second outer protruding ring 703 abuts against the cold shrink insulating tube 1, and the inner wall of the fixed sleeve 701 is fixedly connected to the inner protruding ring 702.

[0022] The end of the cold shrink terminal head sleeve 502 is fixedly connected to the sealing sleeve 8, the inner wall of the sealing sleeve 7 is threadedly connected to the terminal 4, the inner wall of the second outer protruding ring 703 is fixedly connected to the cold shrink finger sleeve 9, and the main cable 10 is installed on the inner wall of the lower end of the cold shrink finger sleeve 9.

[0023] Working principle: In terms of assembly, the movable connection between the inner wall of the cold-shrink insulation tube 1 and the branch cable 3 allows for flexible adaptation to cables of different specifications during installation, without the need for additional adjustments or complex tools. The first outer protruding ring 501, the cold-shrink terminal head sleeve 502, and the sleeve 503 in the splicing mechanism 5 achieve multiple seals through tight fit. During installation, simply insert the first outer protruding ring 501 at the end of the cold-shrink insulation tube 1 into the cold-shrink terminal head sleeve 502, ensuring the inner wall of the sleeve 503 is tightly sealed against the lowermost first outer protruding ring 501, and then screw the upper end of the sleeve 503 into the lower end of the cold-shrink terminal head sleeve 502. The operation is simple and reliable. In mechanism 7, the fixing sleeve 701 first passes through the cold shrink insulating tube 1. The inside of the cold shrink insulating tube 1 and the second outer convex ring 703 abut against each other, and the cold shrink insulating tube 1 is pushed outward by the second outer convex ring 703, showing concave and convex marks. The fixing sleeve 701 is pushed downward and fitted onto the outside of the second outer convex ring 703. It is tightened by the inner convex ring 702 inside the fixing sleeve 701, so that the inner convex ring 702 and the second outer convex ring 703 are tightly bound together, ensuring the sealing and stability of the connection. In addition, the threaded connection between the sealing sleeve 8 and the terminal 4 not only enhances the bonding strength, but also facilitates later disassembly and maintenance, significantly improving the overall assembly efficiency.

[0024] In terms of usage, the highly elastic material design of the phase strip 2 allows it to fit tightly against the outer wall of the cold-shrink insulation tube, facilitating quick identification of cable phases by staff and reducing the possibility of operational errors. The umbrella skirt 6 prevents rain, snow, and other liquids from flowing in along the outer wall, providing additional protection for the terminal head. The movable connection between the cold-shrink finger sleeve 9 and the main cable 10 can accommodate minor cable movements and reduce wear caused by vibration or external stress, extending service life. In addition, the sealing sleeve 8 is made of a special material with excellent weather resistance and anti-aging capabilities, enabling it to adapt to complex and changing outdoor environmental conditions and ensuring that the terminal head maintains a stable operating state even in harsh environments. These features together guarantee the high efficiency and safety of the terminal head in actual use.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A well-sealed outdoor cold-shrink cable termination, comprising a cold-shrink insulating tube (1) and a phase color strip (2), wherein the outer wall of the cold-shrink insulating tube (1) is fixedly connected to the phase color strip (2), characterized in that: The inner wall of the cold shrink insulating tube (1) is movably connected to the branch cable (3), the end of the branch cable (3) is electrically connected to the terminal (4), and the end of the cold shrink insulating tube (1) is connected to the splicing mechanism (5). The splicing mechanism (5) includes a first outer protruding ring (501), the inner wall of the first outer protruding ring (501) is fixedly connected to the cold shrink insulating tube (1), the outer wall of the first outer protruding ring (501) abuts against the cold shrink terminal head sleeve (502), the outer wall of the first outer protruding ring (501) abuts against the sleeve (503), and the end of the sleeve (503) is threadedly connected to the cold shrink terminal head sleeve (502).

2. The outdoor cold-shrink cable termination with good sealing performance according to claim 1, characterized in that: The outer wall of the cold shrink terminal head sleeve (502) is fixedly connected to the umbrella skirt (6), and the lower end of the cold shrink insulating tube (1) is connected to the assembly mechanism (7).

3. The outdoor cold-shrink cable termination with good sealing performance according to claim 2, characterized in that: The assembly mechanism (7) includes a fixed sleeve (701) and a second outer protruding ring (703) fixedly connected. The inner wall of the fixed sleeve (701) abuts against the cold shrink insulating tube (1), the outer wall of the second outer protruding ring (703) abuts against the cold shrink insulating tube (1), and the inner wall of the fixed sleeve (701) is fixedly connected to the inner protruding ring (702).

4. The outdoor cold-shrink cable termination with good sealing performance according to claim 3, characterized in that: The end of the cold shrink terminal head sleeve (502) is fixedly connected to the sealing sleeve (8), and the inner wall of the sealing sleeve (8) is threadedly connected to the terminal (4).

5. The outdoor cold-shrink cable termination with good sealing performance according to claim 4, characterized in that: The inner wall of the second outer protruding ring (703) is fixedly connected to the cold shrink finger sleeve (9), and the main cable (10) is installed on the inner wall of the lower end of the cold shrink finger sleeve (9).

Images