Waterproof and moisture-proof sealed cable end structure

Abstract

This utility model relates to the field of cable technology, specifically to a waterproof and moisture-proof sealed cable end structure. It includes a cable body with a sealing sleeve at each end. The sealing sleeve is fitted over the end of the cable body, and both ends of the sealing sleeve have integrally formed heat-shrinkable sleeves. Each end of the sealing sleeve has two sets of symmetrical annular grooves on its inner wall. Water-swellable rubber strips are fixedly installed within these annular grooves. Multiple annular sealing grooves are located between the two sets of water-swellable rubber strips. Sealing is achieved between the annular sealing grooves and the cable body using sealant. The sealing sleeve has internal flow channels, and the annular sealing grooves communicate with these flow channels. This utility model effectively prevents moisture and humidity from penetrating the cable, improving the reliability of the cable end seal.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and more specifically, to a waterproof and moisture-proof sealed cable end structure. Background Technology

[0002] In the actual use of cables, due to the limited length of a single cable, multiple cables are usually required to be connected in order to meet the requirements of long-distance wiring. Whether it is during wiring or when a single cable is used directly, the cable end is always the weakest link in the entire cable system and is extremely susceptible to the intrusion of moisture and humidity.

[0003] Currently, traditional cable end treatment methods typically involve simple measures such as wrapping with insulating tape or heat shrink tubing. While these methods can provide some initial protection, they have many shortcomings. After prolonged use, the adhesiveness of the insulating tape decreases, making it prone to loosening and falling off, leading to seal failure and allowing moisture and humidity to enter the cable.

[0004] Traditional heat-shrink tubing wrapping methods, if not handled properly during the heat-shrinking process, can easily create air bubbles or gaps, failing to achieve a good seal. Furthermore, in harsh environments, high humidity, or situations where the cable is submerged in water for extended periods, traditional sealing methods are simply inadequate for waterproofing and moisture protection. Once moisture and humidity penetrate the cable, they can degrade its insulation performance, causing short circuits, leakage, and other faults. In severe cases, they can even lead to fires and other safety accidents, posing a significant threat to the stable operation of power transmission and communication systems. Therefore, we propose a waterproof and moisture-proof sealed cable end structure. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof and moisture-proof sealed cable end structure to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A waterproof and moisture-proof sealed cable end structure includes a cable body, with a sealing sleeve at the end of the cable body. The sealing sleeve is fitted onto the end of the cable body, and heat-shrinkable sleeves are integrally formed at both ends of the sealing sleeve. Two sets of symmetrical annular grooves are provided on the inner wall of the cylindrical part at both ends of the sealing sleeve. Water-swellable rubber strips are fixedly installed in the annular grooves, and multiple annular sealing grooves are provided between the two sets of water-swellable rubber strips. The sealing operation between the annular sealing grooves and the cable body is performed by sealing adhesive.

[0008] Preferably, each group of annular grooves consists of 2 to 4 grooves, and the end of the cable body is inserted into the middle of the sealing sleeve.

[0009] This feature ensures that the water-swellable rubber strip and the sealant in the annular sealing groove adhere to the cable for waterproof protection.

[0010] Preferably, the sealing sleeve has a flow channel inside, the annular sealing groove is connected to the flow channel, and the groove wall of the annular sealing groove is provided with an injection hole that communicates with the outside.

[0011] Preferably, the opening of the injection hole is located on the annular side of the sealing sleeve, and the heat shrink sleeve is tightened and fitted onto the cable body;

[0012] The above two settings facilitate the subsequent injection of sealant for sealing operations.

[0013] Preferably, the cable body consists of a conductor and an insulation layer disposed on the outside of the conductor, with a filler layer disposed between the insulation layer and the conductor.

[0014] Preferably, a shielding layer is provided outside the insulating layer, and an outer sheath is provided outside the shielding layer.

[0015] Preferably, an end-sealing plug is inserted into the heat-shrink sleeve that is fitted over the outside of the cable body. The end-sealing plug is used for sealing the end of the single cable body after the heat-shrink sleeve is fitted over it.

[0016] Preferably, the front end of the end-sealing rubber plug is integrally formed with an arc-shaped end, and the rear end of the end-sealing rubber plug is fixedly installed with a handle;

[0017] The above two settings enable the sealing sleeve to seal the other end of the cable when it is only placed on the end of a single cable.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, by setting heat-shrinkable sleeves at both ends of the sealing sleeve, an annular groove and water-swellable rubber strip on the inner wall, as well as an annular sealing groove and sealant, achieves a preliminary fixing effect by tightly fitting the cable body after the heat-shrinkable sleeve is tightened, and the water-swellable rubber strip expands to fill the gaps when exposed to water, and the sealant in the annular sealing groove further strengthens the seal, thus realizing multi-layer waterproof protection for the cable end, effectively preventing moisture and humidity from entering the cable interior, and improving the sealing reliability of the cable end.

[0020] 2. This utility model provides a flow channel inside the sealing sleeve and connects the annular sealing groove with the flow channel. The groove wall is provided with an injection hole. During the sealing operation, the sealant can be injected through the injection hole. The flow channel is used to fill the annular sealing groove more evenly, which realizes convenient and efficient sealant injection, and achieves the purpose of ensuring uniform sealant filling and improving the sealing effect.

[0021] 3. This utility model provides an end-sealing plug inside the heat shrink sleeve, which has an arc-shaped end and a handle. When the sealing sleeve is fitted onto the end of a single cable, the arc-shaped end facilitates insertion into the heat shrink sleeve, the handle facilitates operation, and the end-sealing plug seals the other end of the sealing sleeve. This achieves effective sealing of the other end of the cable end sealing sleeve in single cable usage scenarios, resulting in a perfect sealing structure, enhanced waterproof and moisture-proof performance, and ensuring the safe and stable operation of the cable in various usage scenarios. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the cable body of this utility model;

[0024] Figure 3 This is a cross-sectional view of the sealing sleeve of this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 10. Cable body; 11. Conductor; 12. Filler layer; 13. Insulation layer; 14. Shielding layer; 15. Outer sheath;

[0028] 2. Sealing sleeve; 20. Annular groove; 201. Water-swellable rubber strip; 21. Injection hole; 22. Flow channel; 23. Annular sealing groove; 24. Heat shrink sleeve;

[0029] 3. End sealing rubber plug; 30. Arc-shaped end; 31. Handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-3 This utility model provides a technical solution: a waterproof and moisture-proof sealed cable end structure, including a cable body 1, with a sealing sleeve 2 at the end of the cable body 1. The sealing sleeve 2 is fitted onto the end position of the cable body 1. Both ends of the sealing sleeve 2 are integrally formed with heat-shrinkable sleeves 24. The inner wall of the cylinder at both ends of the sealing sleeve 2 is provided with two sets of mutually symmetrical annular grooves 20. Water-swellable rubber strips 201 are fixedly installed in the annular grooves 20. Multiple annular sealing grooves 23 are provided between the two sets of water-swellable rubber strips 201. The annular sealing grooves 23 are sealed with sealant to the cable body 1. The heat-shrinkable sleeves 24 provide initial sealing. The water-swellable rubber strips 201 in the annular grooves 20 expand when exposed to water, filling the gap between the sealing sleeve 2 and the cable body 1. The sealant in the annular sealing grooves 23 further strengthens the seal. The multiple lines of defense work together to make it difficult for moisture and humidity to penetrate into the interior of the cable body 1, effectively improving the waterproof and moisture-proof performance of the cable end and ensuring the safe and stable operation of the cable.

[0032] In this embodiment, each set of annular grooves 20 consists of 2 to 4 grooves. The end of the cable body 1 is inserted into the middle of the sealing sleeve 2, ensuring that the water-swellable rubber strip 201 and the sealant inside the annular sealing groove 23 are in full contact with the cable body 1. This makes the waterproof protection operation more comprehensive and tighter, avoids blind spots in protection, effectively improves the protective effect of the sealing structure on the cable body 1, and enhances the overall waterproof and moisture-proof capability.

[0033] like Figure 4 As shown, the sealing sleeve 2 has a flow channel 22 inside, and the annular sealing groove 23 is connected to the flow channel 22. The groove wall of the annular sealing groove 23 is provided with an injection hole 21 that is connected to the outside. The sealant can be injected into the flow channel 22 through the injection hole 21 and then flow into the annular sealing groove 23 evenly, making the sealant injection operation more convenient and efficient, and ensuring that the sealant fills the annular sealing groove 23 evenly, avoiding problems such as air bubbles and uneven filling, thereby improving the sealing quality and ensuring reliable sealing effect.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the opening of the injection hole 21 is located on the annular side of the sealing sleeve 2. The heat shrink sleeve 24 is tightened and fitted onto the cable body 1, making it convenient for operators to inject sealant from the side. At the same time, the tightening and fixing of the heat shrink sleeve 24 provides a stable operating basis for the injection of sealant, making the subsequent sealant injection operation more convenient and smooth, reducing the difficulty and time of operation, improving installation efficiency, and ensuring the timeliness and effectiveness of the seal between the sealing sleeve 2 and the cable body 1.

[0035] like Figure 2As shown, the cable body 1 consists of a conductor 10 and an insulation layer 12 disposed outside the conductor 10. A filler layer 11 is disposed between the insulation layer 12 and the conductor 10. A shielding layer 13 is disposed outside the insulation layer 12, and an outer sheath 14 is disposed outside the shielding layer 13. The insulation layer 12 ensures the insulation of the conductor 10; the shielding layer 13 reduces electromagnetic interference; and the outer sheath 14 provides external protection, enabling the cable body 1 to have good electrical and mechanical properties. In conjunction with the sealing sleeve 2 and other structures, the reliability and safety of the cable in complex environments are further improved.

[0036] In addition, an end-sealing plug 3 is inserted into the heat-shrink sleeve 24 that is fitted over the outside of the cable body 1. The end-sealing plug 3 is used for sealing after the sealing sleeve 2 is fitted over the end of the single cable body 1. When the sealing sleeve 2 is fitted over the end of the single cable body 1, the end-sealing plug 3 can seal the other end of the sealing sleeve 2 to prevent moisture and humidity from entering from that end, making the end sealing structure of the single cable more complete, effectively solving the end sealing problem when using a single cable, enhancing the waterproof and moisture-proof capability of the cable in single-cable usage scenarios, and expanding the application range of this structure.

[0037] It is worth noting that the front end of the end-sealing rubber plug 3 is integrally formed with an arc-shaped end 30, and the rear end of the end-sealing rubber plug 3 is fixedly installed with a handle 31. The arc-shaped end 30 facilitates the insertion of the end-sealing rubber plug 3 into the heat-shrink sleeve 24, reducing insertion resistance; the handle 31 makes it convenient for operators to grip and operate, facilitating insertion and removal. This makes the installation and removal of the end-sealing rubber plug 3 easier and more convenient, improving operational efficiency, while ensuring that the end-sealing rubber plug 3 is installed in place and ensuring a good sealing effect at the other end of the sealing sleeve 2.

[0038] When using the waterproof and moisture-proof sealed cable end structure of this utility model, first clean the surface of the outer sheath 14 at the end of the cable body 1 to remove oil, dust and other impurities, and ensure that the sealing sleeve 2 can fit well with the cable body 1.

[0039] Place the sealing sleeve 2 on the end of the cable body 1, so that the end of the cable body 1 is inserted into the middle of the sealing sleeve 2. Then, use a hot air gun to heat the heat shrink sleeve 24 evenly, so that it is tightened and tightly attached to the cable body 1, thus completing the initial sealing.

[0040] The sealant is injected into the flow channel 22 of the sealing sleeve 2 through the injection hole 21. The sealant flows evenly into the annular sealing groove 23 along the flow channel 22, filling the gap between the sealing sleeve 2 and the cable body 1. After the sealant is completely cured, the sealant and the water-swellable rubber strip 201 form a multi-layer seal.

[0041] If this structure is used for a single cable body 1, after one end is fixed to the cable body 1 and sealed, the arc-shaped end 30 of the end sealing plug 3 is aligned with the heat shrink sleeve 24, and the handle 31 is used to insert it into the heat shrink sleeve 24 to complete the sealing of the other end of the sealing sleeve 2. During this process, the sealant at this end and the water-swellable rubber strip 201 can continue to be used to seal between the end sealing plug 3 to prevent moisture and humidity from entering. Finally, the waterproof and moisture-proof performance of the sealed cable end is tested to ensure that it meets the usage requirements.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof and moisture-proof sealed cable end structure comprising a cable main body (1), characterized in that: The cable body (1) is provided with a sealing sleeve (2) at its end. The sealing sleeve (2) is fitted at the end of the cable body (1). Both ends of the sealing sleeve (2) are integrally formed with heat shrink sleeves (24). The inner wall of the cylinder at both ends of the sealing sleeve (2) is provided with two sets of mutually symmetrical annular grooves (20). Water-swellable rubber strips (201) are fixedly installed in the annular grooves (201). Multiple annular sealing grooves (23) are provided between the two sets of water-swellable rubber strips (201). The annular sealing grooves (23) are sealed with the cable body (1) by sealant.

2. The waterproof and moisture resistant sealed cable end structure of claim 1, wherein: The number of annular grooves (20) in each group is 2 to 4, and the end of the cable body (1) is inserted into the middle position of the sealing sleeve (2).

3. The waterproof and moisture resistant sealed cable end structure of claim 1, wherein: The sealing sleeve (2) has a flow channel (22) inside, and the annular sealing groove (23) is connected to the flow channel (22). The groove wall of the annular sealing groove (23) is provided with an injection hole (21) that is connected to the outside.

4. The waterproof and moisture resistant sealed cable end structure of claim 3, wherein: The opening of the injection hole (21) is located on the annular side of the sealing sleeve (2), and the heat shrink sleeve (24) is tightened and fitted onto the cable body (1).

5. The waterproof and moisture resistant sealed cable end structure of claim 1, wherein: The cable body (1) consists of a conductor (10) and an insulation layer (12) disposed outside the conductor (10), with a filler layer (11) disposed between the insulation layer (12) and the conductor (10).

6. The waterproof and moisture resistant sealed cable end structure of claim 5, wherein: The insulating layer (12) is provided with a shielding layer (13) on the outside, and the shielding layer (13) is provided with an outer sheath (14) on the outside.

7. The waterproof and moisture resistant sealed cable end structure of claim 1, wherein: An end-sealing plug (3) is inserted into the heat-shrink sleeve (24) that is fitted over the outside of the cable body (1). The end-sealing plug (3) is used for sealing the end of the sleeve (2) after it is fitted over the end of the single cable body (1).

8. The waterproof and moisture resistant sealed cable end structure of claim 7, wherein: The front end of the end sealing plug (3) is integrally formed with an arc-shaped end (30), and the rear end of the end sealing plug (3) is fixedly installed with a handle (31).

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