A cold shrink outdoor cable termination

Abstract

The application discloses a cold shrink outdoor cable terminal joint, which comprises a cold shrink tube provided with a shed, a cable installed in the cold shrink tube through an expansion compression mechanism and a terminal installed at the end of the cable; the expansion compression mechanism comprises a ring-shaped integral fixing ring and a plurality of split moving rings; the moving rings are arranged in the form of arc-shaped ring bodies and are arranged in the interior of the fixing ring and have the same center as the moving rings; and the moving rings can be combined into an integral ring body. The application can expand the cold shrink tube, facilitate the installation of the cable in the cold shrink tube, and fix the cable in the cold shrink tube through the elasticity of the cold shrink tube after installation, so as to form an integral outdoor cable terminal structure and realize reasonable structural design.

Description

Technical Field

[0001] This invention belongs to the field of cold-shrink outdoor cable technology, specifically relating to a cold-shrink outdoor cable terminal joint. Background Technology

[0002] In existing technologies, after the cold shrink tubing is manufactured, mechanical equipment is used to expand its interior. Then, a support tube with a larger outer diameter is placed inside the cold shrink tubing to expand its size. The cable is then installed inside the cold shrink tubing. After the support tube is removed, the cable is wrapped and compressed using the elastic properties of the cold shrink tubing to form a complete cable terminal for outdoor use. However, the installation of cold shrink tubing and cables is usually very difficult in existing technologies, especially when the internal size of the cold shrink tubing is small. It is difficult for the cable to enter the cold shrink tubing, and there are also some problems with the internal sealing after the cable is installed. It is obviously not enough to rely solely on the cold shrinking properties of the cold shrink tubing for sealing.

[0003] Existing technical solutions for cold-shrink outdoor cable termination joints, such as the "A Cold-shrink Cable Outdoor Connection Terminal" disclosed in patent announcement number CN114256802B and the "A Cold-shrink Outdoor Cable Termination Joint" disclosed in patent announcement number CN116054073B, all involve setting up corresponding mechanical mechanisms externally to achieve the requirements of terminal installation and sealing performance. However, the above-mentioned technical solutions have relatively complex structural designs, are not convenient to use, and usually only have one function, lacking the ability to simultaneously expand and compress, resulting in an unreasonable structural design.

[0004] To solve the above technical problems, it is necessary to develop a cold-shrink outdoor cable termination joint with a reasonable structure and two functions. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a cold-shrink outdoor cable termination connector; the technical solution is as follows:

[0006] A cold-shrink outdoor cable termination includes a cold-shrink tube with a shed, a cable installed inside the cold-shrink tube via an expansion and compression mechanism, and a terminal block installed at the end of the cable. The expansion and compression mechanism includes an integral fixed ring and several separate movable rings. The movable rings are arc-shaped ring structures and are correspondingly arranged inside the fixed ring and concentric with the movable rings. The movable rings can be closed to form an integral ring. Each movable ring has a rotating seat at the middle of its outer end, and a screw is installed inside the rotating seat. The screw extends outward and points towards the center. The fixed ring has a screw hole corresponding to the position of the screw, and the screw passes through the screw hole.

[0007] The movable ring is also provided with an arc-shaped perforation, in which an expansion plate is placed, and a retaining plate is provided at the upper end of the expansion plate. The expansion plate is placed after the perforation and its position is fixed by the retaining plate at the upper end.

[0008] The inner diameter of the fixed ring is larger than the outer diameter of the cold shrink tubing, while the inner diameter of the ring formed by the moving rings is smaller than the outer diameter of the cold shrink tubing. After the moving rings are closed, the outer expansion plate is placed into the cold shrink tubing. The screw rotates on the fixed ring and drives the inner moving ring to move radially outward, thereby driving the outer expansion plate to move outward and expanding the cold shrink tubing as a whole. Then, the cable is installed in the expanded cold shrink tubing. After the outer expansion plate is pulled out, the cold shrink tubing elastically retracts to tighten and wrap the cable.

[0009] Furthermore, the cold shrink tubing is made of silicone rubber and has retraction elasticity; and after the cable is installed in the cold shrink tubing, the outer expansion plate is removed from the perforation, the expansion of the moving ring is adjusted, the moving ring is fitted onto the end of the cold shrink tubing near the terminal block, and the moving ring is pressed against the outer wall of the cold shrink tubing by adjusting the screw, thereby pressing the cold shrink tubing onto the cable by the moving ring.

[0010] Furthermore, there are three movable rings in the fixed ring, and the three movable rings are the same size; correspondingly, there are also three outer expansion plates, which are arc-shaped and fit against the inner wall of the cold shrink tube when expanding.

[0011] Furthermore, there are three screws in total, and each screw has a handle installed at its end, which rotates the screw accordingly.

[0012] Furthermore, two sets of limiting mechanisms are installed between each moving ring and the fixed ring. The limiting mechanism includes a limiting sleeve and a limiting rod. The limiting sleeve is fixed to the outer wall of the moving ring, and the limiting rod is fixed to the inner wall of the fixed ring. The limiting rod is fitted into the limiting sleeve. The limiting sleeve and the limiting rod point towards the circle of the fixed ring, corresponding to the limiting direction of movement of the moving ring, so that the moving ring can only move radially and will not rotate.

[0013] Furthermore, a storage bag is installed between each moving ring and the fixed ring, and a vertical groove is provided in the middle of the outer wall of the outer expansion plate. The card plate at the upper end of the outer expansion plate is also provided with a feeding trough that corresponds to and communicates with the groove. A feeding pipe is installed on the storage bag, and a feeding head is installed at the end of the feeding pipe. The feeding head is detachably installed in the feeding trough.

[0014] When the moving ring moves outward, it squeezes the storage bag between the moving ring and the fixed ring, causing the material in the storage bag to be fed into the groove of the outer expansion plate through the conveying pipe, thereby coating the material onto the inner wall of the cold shrink tube.

[0015] Furthermore, the material in the storage bag is set as silicone grease or sealant; the inner wall of the conveying trough is provided with internal threads, the outer wall of the conveying head is provided with external threads, the conveying head is detachably installed in the conveying trough by means of threaded connection, and the conveying pipe is correspondingly installed at the upper end of the storage bag.

[0016] Furthermore, two storage bags are provided between each moving ring and the fixed ring, and each storage bag is surrounded by a compression spring. The compression spring presses the moving ring inward to fix the moving ring as a whole.

[0017] Furthermore, a compression spring is also installed inside the limiting sleeve. One end of the compression spring is fixed to the bottom of the limiting sleeve, and the other end is fixed to the limiting sleeve rod, thereby pressing the moving ring inward.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0019] 1) This invention can achieve the purpose of expanding the cold shrink tubing, which facilitates the installation of cables inside the cold shrink tubing. After installation, the elasticity of the cold shrink tubing can wrap and fix the internal cables, forming an overall outdoor cable terminal structure with a reasonable structural design.

[0020] 2) The terminal connector of the present invention can not only expand the cold shrink tubing, but also press the cold shrink tubing onto the cable through the inner moving ring after the cable is installed, thereby sealing the cable and preventing water from entering the interior of the cold shrink tubing. It plays the role of sealing the cold shrink tubing and has a reasonable structure.

[0021] 3) In this invention, the inner moving ring and the outer fixed ring are set at the same center, and the structure is reasonably set. The moving ring on the outer side realizes the moving expansion and the expansion plate can be disassembled and used, which facilitates the subsequent pressing and fixing of the cold shrink tube. The structure is ingeniously designed.

[0022] 4) The present invention also includes a combination of a limiting sleeve and a limiting rod, which can increase the stability of the overall structure and facilitate the rotation of the inner moving ring, etc.

[0023] 5) The present invention also includes a storage bag, and the material in the storage bag can be squeezed out when the inner moving ring moves. The outer expansion plate is also provided with a conveying trough and a conveying head, and a groove for discharging material is provided. The material can be squeezed onto the inner wall of the cold shrink tube to achieve lubrication or sealing installation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a diagram showing the installation position of the expansion and clamping mechanism in this invention;

[0026] Figure 3 for Figure 2 Sectional view of AA;

[0027] Figure 4 A schematic diagram showing the disassembled outer expansion plate in the expansion clamping mechanism;

[0028] Figure 5 This is a diagram showing the installation position of the storage bag in this invention;

[0029] Figure 6 for Figure 5 Side view;

[0030] Figure 7 for Figure 6 C-direction view;

[0031] Figure 8 This is a schematic diagram of the expansion and clamping mechanism in this invention clamping the cold shrink tube;

[0032] Figure 9 for Figure 8 BB section view;

[0033] Among them, the components are: 1. cold shrink tubing, 101. umbrella skirt, 2. cable, 3. terminal block, 4. fixing ring, 5. moving ring, 6. rotating seat, 7. screw rod, 8. screw hole, 9. perforation, 10. outer expansion plate, 11. clamping plate, 12. crank handle, 13. limiting sleeve, 14. limiting sleeve rod, 15. storage bag, 16. groove, 17. conveying trough, 18. conveying pipe, 19. conveying head, and 20. compression spring. Detailed Implementation

[0034] The present invention will be further illustrated below with reference to specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0035] Example 1

[0036] like Figure 1 As shown, a cold-shrink outdoor cable terminal connector of this embodiment includes a cold-shrink tube 1 with a skirt 101, a cable 2 installed inside the cold-shrink tube 1 by an expansion and compression mechanism, and a terminal block 3 installed at the end of the cable 2.

[0037] like Figure 2 and Figure 3 As shown, the expansion and clamping mechanism of this embodiment includes an integral ring-shaped fixed ring 4 and several separate movable rings 5. The movable rings 5 ​​in this embodiment are configured as arc-shaped ring structures, and the movable rings 5 ​​are correspondingly arranged inside the fixed ring 4 and concentrically arranged with the movable rings 5. The movable rings 5 ​​in this embodiment can be correspondingly enclosed to form an integral ring. A rotating seat 6 is provided at the middle position of the outer end of each movable ring 5. A screw 7 is installed in the rotating seat 6. In this embodiment, the screw 7 extends outward and points to the center. The fixed ring 4 in this embodiment is provided with a screw hole 8 corresponding to the position of the screw 7. The screw 7 passes through the screw hole 8 in this embodiment.

[0038] like Figure 4 As shown, the movable ring 5 in this embodiment is also provided with an arc-shaped perforation 9. In this embodiment, an expansion plate 10 is placed inside the perforation 9, and a retaining plate 11 is provided at the upper end of the expansion plate 10. In this embodiment, the expansion plate 10 is placed after the perforation 9, and its position is fixed by the retaining plate 11 at the upper end.

[0039] In this embodiment, the inner diameter of the fixed ring 4 is larger than the outer diameter of the cold shrink tube 1, while the inner diameter of the ring formed by the moving ring 5 is smaller than the outer diameter of the cold shrink tube 1. After the moving ring 5 is closed, the outer expansion plate 10 is placed into the cold shrink tube 1. After the screw 7 rotates on the fixed ring 4, it drives the inner moving ring 5 to move radially outward, thereby driving the outer expansion plate 10 to move outward and expanding the cold shrink tube 1 as a whole. Then, the cable 2 is installed in the expanded cold shrink tube 1. After the outer expansion plate 10 is pulled out, the cold shrink tube 1 elastically retracts to tighten and wrap the cable 2.

[0040] like Figure 8 and Figure 9As shown, in this embodiment, the cold shrink tubing 1 is made of silicone rubber and has a retractable elasticity. After the cable 2 is installed in the cold shrink tubing 1, the outer expansion plate 10 is removed from the through hole 9, the moving ring 5 is adjusted to expand, and the moving ring 5 is fitted onto the end of the cold shrink tubing 1 near the terminal 3. By adjusting the screw 7, the moving ring 5 is pressed against the outer wall of the cold shrink tubing 1, and the cold shrink tubing 1 is pressed onto the cable 2 by the moving ring 5.

[0041] In this embodiment, there are three movable rings 5 ​​inside the fixed ring 4, and the three movable rings 5 ​​are the same size; correspondingly, there are also three outer expansion plates 10 in this embodiment. The outer expansion plates 10 have an arc-shaped structure and are placed against the inner wall of the cold shrink tube 1 when expanding.

[0042] In this embodiment, there are three screws 7, and each screw 7 is also equipped with a handle 12 at its end, so that the screw 7 can be rotated accordingly by the handle 12.

[0043] Two sets of limiting mechanisms are also installed between each moving ring 5 and the fixed ring 4. The limiting mechanism in this embodiment includes a limiting sleeve 13 and a limiting rod 14. The limiting sleeve 13 is fixed to the outer wall of the moving ring 5, and the limiting rod 14 is fixed to the inner wall of the fixed ring 4. The limiting rod 14 is fitted into the limiting sleeve 13. The limiting sleeve 13 and the limiting rod 14 point to the circle of the fixed ring 4, corresponding to limiting the movement direction of the moving ring 5, so that the moving ring 5 can only move radially and will not rotate.

[0044] like Figure 5 and Figure 6 As shown, a storage bag 15 is installed between each moving ring 5 and the fixed ring 4. A vertical groove 16 is provided at the middle position of the outer wall of the outer expansion plate 10 in this embodiment. The card plate 11 at the upper end of the outer expansion plate 10 in this embodiment is also provided with a conveying groove 17 corresponding to and communicating with the groove 16. A conveying pipe 18 is installed on the storage bag 15 in this embodiment. A conveying head 19 is installed at the end of the conveying pipe 18. The conveying head 19 in this embodiment is detachably installed in the conveying groove 17.

[0045] like Figure 7 As shown, when the moving ring 5 moves outward, it correspondingly squeezes the storage bag 15 between the moving ring 5 and the fixed ring 4, so that the material in the storage bag 15 is input into the groove 16 of the outer expansion plate 10 through the conveying pipe 18, thereby coating the material onto the inner wall of the cold shrink tube 1.

[0046] In this embodiment, the material in the storage bag 15 is set as silicone grease or sealant; the inner wall of the conveying trough 17 in this embodiment is provided with internal threads, the outer wall of the conveying head 19 is provided with external threads, the conveying head 19 is detachably installed in the conveying trough 17 by means of threaded connection, and the conveying pipe 18 is correspondingly installed at the upper end of the storage bag 15.

[0047] Two storage bags 15 are provided between each moving ring 5 and the fixed ring 4, and each storage bag 15 is provided with a compression spring 20 on its periphery. In this embodiment, the compression spring 20 presses the moving ring 5 inward to fix the moving ring 5 as a whole.

[0048] Furthermore, a compression spring 20 is also installed inside the limiting sleeve 13 in this embodiment. One end of the compression spring 20 is fixed to the bottom of the limiting sleeve 13, and the other end is fixed to the limiting sleeve rod 14, thereby pressing the moving ring 5 inward.

[0049] Example 2

[0050] The technical solution of this embodiment is based on the technical structure of embodiment 1, and details the specific structure and usage method of the present invention. The terminal connector of the present invention has two functions: first, it is used to expand the cold shrink tube 1 outward to facilitate the installation of the internal cable 2; second, after the cable 2 and the terminal block 3 are installed in the cold shrink tube 1, the expansion plate 10 in the present invention is removed, and the cold shrink tube 1 at the terminal block 3 is pressed and fixed by the inner moving ring 5, so as to prevent water from entering due to the cold shrink tube 1 not shrinking properly. The overall structure can realize the initial installation work and the subsequent sealing work.

[0051] The installation method of the cold-shrink cable 2-terminal is as follows: Figure 1 As shown, the device includes an external cold shrink tubing 1, a cable 2 installed inside the cold shrink tubing 1, and a terminal block 3 installed at the upper end of the cable 2 after installation. The cold shrink tubing 1 is provided with evenly spaced umbrella skirts 101, thus forming an overall structure. Usually, the cold shrink tubing 1 is a tube made of elastic material. After the tube is opened by some mechanical equipment, the cable 2 is put into the cold shrink tubing 1. The cold shrink tubing 1 wraps and fixes the cable 2 through elastic inward contraction to complete the installation. In this embodiment, the corresponding installation of the cold shrink tubing 1 and the cable 2 is first achieved by setting an external expansion and clamping mechanism.

[0052] In this embodiment, the outermost fixed ring 4 is an integral ring structure, while the three innermost movable rings 5, concentric with each other, are movable and can be spliced ​​together to form an integral ring structure. The dimensions of the inner and outer rings need to be set accordingly. Firstly, the outer fixed ring 4 needs to be much larger than the outer diameter of the cold shrink tubing 1. Secondly, when the three inner movable rings 5 ​​are spliced ​​into an integral ring structure, their inner diameter needs to be smaller than the outer diameter of the cold shrink tubing 1, so that the cold shrink tubing 1 can be pressed tightly by the movable rings 5. In actual use, the position of the inner movable rings 5 ​​is first adjusted by rotating the screw 7 on the fixed ring 4. The three moving rings 5 ​​form a ring shape. Then, the outer expansion plate 10 is inserted into the through hole 9 of each moving ring 5. The outer expansion plate 10 itself is an arc-shaped structure and has a retaining plate 11 at the upper end, which naturally locks onto the moving ring 5. Importantly, at this time, the outer expansion plate 10 is inserted into the cold shrink tube 1. Then, the screw 7 on the fixing ring 4 is rotated. After the screw 7 rotates, it naturally drives the moving ring 5 to move radially, so that the moving ring 5 moves outward. At the same time, it drives the outer expansion plate 10 inside the cold shrink tube 1 to move outward, thereby expanding the tube body at the end of the cold shrink tube 1. After the cold shrink tube 1 is expanded, the cable 2 can be easily put into the cold shrink tube 1, realizing the installation of the cold shrink tube 1.

[0053] Furthermore, in this embodiment, a limiting mechanism is provided between the moving ring 5 and the fixed ring 4. Specifically, it is installed in the form of a limiting sleeve 13 and a limiting rod 14 to prevent the inner moving ring 5 from rotating when moving left and right. Correspondingly, a compression spring 20 is installed inside the moving sleeve, which can fix the position of the moving ring 5 when the screw 7 is not rotating. The compression spring 20 can compress the screw 7, so that the screw 7 does not shake or rotate, and will only rotate when an external force is applied.

[0054] Furthermore, in this embodiment, a storage bag 15 is installed between the moving ring 5 and the fixed ring 4. The storage bag 15 can store materials such as silicone grease or sealant. In this embodiment, a groove 16 is provided at the middle position of the outer expansion plate 10, and a conveying groove 17 is provided at the upper position of the clamping plate 11. A conveying pipe 18 and a conveying head 19 are installed on the storage bag 15. After the outer expansion plate 10 is installed, the conveying head 19 is installed in the conveying groove 17. When the cold shrink tube 1 expands, the moving ring 5 presses down on the storage bag 15, so that the material in the storage bag 15 is pressed into the groove 16. At this time, the inner expansion plate itself is attached to the inner wall of the cold shrink tube 1. The material flows directly into the inner wall of the cold shrink tube 1. In this embodiment, the material can be lubricating silicone grease. Since the expansion plate 10 only expands the upper end of the cold shrink tube 1, there is still some resistance in the remaining stroke after the cable 2 is inserted into the cold shrink tube 1. However, after the lubricating silicone grease is added, the cable 2 can be easily passed through the cold shrink tube 1. The structure is very reasonable. At the same time, in this embodiment, the material can also be sealant. After the expansion is successful and the cable 2 is installed, the sealant initially acts as a lubricant. After the sealant dries, it acts as a sealant and adhesive. The overall structure has a better sealing effect, preventing water from entering the cold shrink tube 1.

[0055] Furthermore, the technical solution of this embodiment not only has the function of expanding and installing the cable 2, but also has the function of pressing and sealing the cold shrink tube 1. After the cable 2 is installed, the cable 2 itself is wrapped around the entire cable 2 by the cold shrink elasticity of the cold shrink tube 1. However, there will still be a situation where water enters the gap between the cold shrink tube 1 and the cable 2. In this embodiment, the part of the cold shrink tube 1 connected to the terminal 3 can be sealed. In this embodiment, the expansion plate 10 itself can be removed. After removal, the inner movable plate is adjusted to a larger size and then directly fitted onto the upper end of the cold shrink tube 1. At this time, the cable 2 is installed in the cold shrink tube 1. Then, the adjusting screw 7 is adjusted inward to make the movable ring 5 press against the cold shrink tube 1, so that the cold shrink tube 1 is pressed and fixed onto the cable 2, thereby sealing the upper end of the cold shrink tube 1 and preventing rainwater from entering the interior of the cold shrink tube 1.

[0056] Furthermore, during the process of the moving ring 5 pressing the cold shrink tube 1, the compression spring 20 on the outside of the storage bag 15 and the compression spring 20 inside the limiting sleeve 13 will press the moving ring 5 inward. On the one hand, the position of the screw 7 is fixed and correspondingly pressed, and the position of the moving ring 5 is more fixed, so that there will be no shaking or other situations, and the structure is stable and reliable.

[0057] The above embodiments are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cold-shrink outdoor cable termination connector, characterized in that: The device includes a cold shrink tube (1) with a skirt (101), a cable (2) installed inside the cold shrink tube (1) by an expansion and clamping mechanism, and a terminal block (3) installed at the end of the cable (2). The expansion and clamping mechanism includes an integral ring (4) and several separate movable rings (5). The movable rings (5) are set as arc-shaped ring structures, and the movable rings (5) are set inside the fixed ring (4) and are concentric with the movable rings (5). The movable rings (5) can be enclosed to form an integral ring. A rotating seat (6) is set at the middle position of the outer end of each movable ring (5). A screw (7) is installed in the rotating seat (6). The screw (7) extends outward and points to the center. The fixed ring (4) is provided with a screw hole (8) corresponding to the position of the screw (7). The screw (7) passes through the screw hole (8). The movable ring (5) is also provided with an arc-shaped perforation (9), an expansion plate (10) is placed inside the perforation (9), and a retaining plate (11) is provided at the upper end of the expansion plate (10). The expansion plate (10) is placed after the perforation (9), and its position is fixed by the retaining plate (11) at the upper end. The inner diameter of the fixed ring (4) is larger than the outer diameter of the cold shrink tube (1), while the inner diameter of the ring formed by the moving ring (5) is smaller than the outer diameter of the cold shrink tube (1). After the moving ring (5) is closed, the outer expansion plate (10) is placed into the cold shrink tube (1). After the screw (7) rotates on the fixed ring (4), it drives the inner moving ring (5) to move radially outward, thereby driving the outer expansion plate (10) to move outward, expanding the cold shrink tube (1) as a whole. Then the cable (2) is installed in the expanded cold shrink tube (1). After the outer expansion plate (10) is pulled out, the cold shrink tube (1) elastically retracts to tighten and wrap the cable (2).

2. The cold-shrink outdoor cable termination joint according to claim 1, characterized in that: The cold shrink tube (1) is made of silicone rubber and has a retraction elasticity. After the cable (2) is installed in the cold shrink tube (1), the outer expansion plate (10) is removed from the through hole (9), the moving ring (5) is adjusted to expand, and the moving ring (5) is fitted onto the end of the cold shrink tube (1) near the terminal (3). The moving ring (5) is pressed against the outer wall of the cold shrink tube (1) by adjusting the screw (7), and the cold shrink tube (1) is pressed onto the cable (2) by the moving ring (5).

3. The cold-shrink outdoor cable termination joint according to claim 1, characterized in that: There are three movable rings (5) in the fixed ring (4), and the three movable rings (5) are the same size; correspondingly, there are also three outer expansion plates (10), and the outer expansion plates (10) are arc-shaped structures, which are placed against the inner wall of the cold shrink tube (1) when expanding.

4. A cold-shrink outdoor cable termination connector according to claim 3, characterized in that: There are three screws (7), and each screw (7) is equipped with a handle (12) at its end, so that the screw (7) can be rotated accordingly by the handle (12).

5. A cold-shrink outdoor cable termination connector according to claim 1, characterized in that: Two sets of limiting mechanisms are also installed between each moving ring (5) and the fixed ring (4). The limiting mechanism includes a limiting sleeve (13) and a limiting rod (14). The limiting sleeve (13) is fixed to the outer wall of the moving ring (5), and the limiting rod (14) is fixed to the inner wall of the fixed ring (4). The limiting rod (14) is fitted into the limiting sleeve (13). The limiting sleeve (13) and the limiting rod (14) point to the circle of the fixed ring (4) and limit the moving ring (5) in the direction of movement, so that the moving ring (5) can only move radially and will not rotate.

6. A cold-shrink outdoor cable termination connector according to claim 5, characterized in that: Each moving ring (5) and fixed ring (4) is also equipped with a storage bag (15), and a vertical groove (16) is provided in the middle of the outer wall of the outer expansion plate (10). The card plate (11) at the upper end of the outer expansion plate (10) is also equipped with a conveying groove (17) corresponding to and connected to the groove (16). A conveying pipe (18) is installed on the storage bag (15), and a conveying head (19) is installed at the end of the conveying pipe (18). The conveying head (19) is detachably installed in the conveying groove (17). When the moving ring (5) moves outward, it correspondingly squeezes the storage bag (15) between the moving ring (5) and the fixed ring (4), so that the material in the storage bag (15) is fed into the groove (16) of the outer expansion plate (10) through the conveying pipe (18), thereby coating the material onto the inner wall of the cold shrink tube (1).

7. A cold-shrink outdoor cable termination connector according to claim 6, characterized in that: The material in the storage bag (15) is silicone grease or sealant; the inner wall of the conveying trough (17) is provided with internal threads, the outer wall of the conveying head (19) is provided with external threads, the conveying head (19) is detachably installed in the conveying trough (17) by means of threaded connection, and the conveying pipe (18) is correspondingly installed at the upper end of the storage bag (15).

8. A cold-shrink outdoor cable termination joint according to claim 6, characterized in that: Two storage bags (15) are provided between each moving ring (5) and the fixed ring (4), and each storage bag (15) is provided with a compression spring (20) on its periphery. The compression spring (20) presses the moving ring (5) inward, so that the moving ring (5) is fixed as a whole. Furthermore, a compression spring (20) is also installed inside the limiting sleeve (13). One end of the compression spring (20) is fixed to the bottom of the limiting sleeve (13), and the other end is fixed to the limiting sleeve rod (14), thereby pressing the moving ring (5) inward.

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