Cold contraction pipe

Abstract

The utility model discloses a cold shrink tube, a tube main body is composed of a thick tube section and thin tube sections integrally formed at two ends, the inner wall of the thick tube section is provided with an embedding groove for embedding a fastener ring, the inner wall of the thin tube section is provided with an elastic convex ring, and the aperture of the fastener ring is larger than that of the elastic convex ring. Compared with a traditional cold shrink tube, the structure increases the accommodating space and adapts to a connecting part with a larger size; and the fastener ring and the elastic convex ring enhance the connection reliability and expand the application range. Practicality and universality are improved through accurate aperture difference design. The fastener ring with a special structure and the matched embedding groove ensure the stability of the structure; the comprehensive performance is improved by using the thermoplastic elastomer; the electromagnetic shielding layer meets the requirements of special fields; the wear-resistant layer enhances durability; the outer wall annular groove has the anti-skid, heat dissipation and buffering effects, and the performance of the cold shrink pipe is improved in an all-around mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold shrink tube technical field, specifically is a kind of cold shrink tube. BACKGROUND

[0002] As an important cable accessory, cold shrink tube is widely used in cable connection, terminal processing and other fields in power system. Its main function is to provide reliable mechanical protection and electrical insulation performance for cables, to ensure the safe and stable operation of power system. Traditional cold shrink tube design usually includes a uniform diameter pipe body, which is shrunk and closely fitted on the surface of cable through the elasticity and pre-expansion characteristics of the material itself during installation, forming waterproof, dustproof and insulation protection.

[0003] In many fields such as power and communication, cold shrink tube plays an important role as a commonly used connecting and protecting pipe. Traditional cold shrink tube usually has a single structure, which is generally a tubular structure with equal diameter. This structure has certain limitations in actual use. On the one hand, its internal space is limited, and for some application scenarios that require a larger space to accommodate cable joints or other connecting components, it cannot meet the demand well. On the other hand, in terms of connection stability, due to the lack of effective support structure, the reliability of the connection is affected when subjected to external pulling or vibration. In addition, when the traditional cold shrink tube is connected with other components, due to the lack of effective fastening measures, the tightness of the connection is insufficient, which easily leads to the intrusion of moisture, dust and other impurities, reducing the protection performance of the system. In summary, the existing cold shrink tube has these problems in structure design, and a new cold shrink tube structure is needed to solve them. SUMMARY

[0004] The utility model provides a kind of cold shrink tube for the deficiency in the background art.

[0005] The technical scheme adopted by the utility model is: a kind of cold shrink tube, including pipe body, the pipe body includes thick pipe section and the thin pipe section integrally formed on the both ends of thick pipe section, the inner wall of thick pipe section is interval and is provided with several embedded slots, the embedded slot is embedded with fastener ring, the fastener ring is at least partially protruding from the inner wall of thick pipe section, the inner wall of thin pipe section is interval and is provided with several elastic convex rings, and the aperture diameter of fastener ring is greater than the aperture diameter of elastic convex ring.

[0006] Further, the aperture diameter of the fastener ring is 5-10mm larger than the aperture of the elastic convex ring.

[0007] Further, the fastener ring is composed of a dovetail connecting block and a semicircular body integrally formed on the dovetail connecting block, and the semicircular body protrudes from the inner wall of the thick pipe section.

[0008] Further, the embedded groove is a dovetail structure matched with the dovetail connecting block.

[0009] Further, the elastic convex ring and the fastener ring are thermoplastic elastomers.

[0010] Further, the pipe body is embedded with an electromagnetic shielding layer.

[0011] Further, the pipe body surface is compounded with a wear-resistant layer with a thickness of 0.5-1mm.

[0012] Further, the pipe body outer wall is provided with a plurality of annular grooves.

[0013] The utility model discloses the beneficial effect is:

[0014] 1. Increase the middle accommodating space: the pipe body of the cold shrink tube is composed of two thin pipe sections and a thick pipe section with a larger diameter in the middle, and this structural design forms a larger accommodating space in the middle. In the field of electric power, communication and the like, the installation of cable joints or other larger connecting components can be easily accommodated, avoiding the problem of installation difficulty or inability to install due to insufficient space, and greatly improving the applicability of the cold shrink tube.

[0015] 2. Enhance the connection stability and overall strength: the fastener ring is protruded from the inner wall of the thick pipe section. When the cold shrink tube is used for connecting components, the fastener ring can provide additional support, effectively reducing the risk of loosening at the connection when subjected to external pulling or vibration, greatly improving the stability of the connection. At the same time, the existence of the fastener ring disperses the external force, which helps to improve the overall strength of the cold shrink tube, prolong its service life, and reduce the replacement cost caused by structural damage.

[0016] 3. Improve the fastening connection effect: a plurality of elastic convex rings are arranged on the inner walls of the two thin pipe sections. These elastic convex rings can tightly fit the outer wall of the connected component. After the installation of the cold shrink tube, the elastic force generated by the elastic convex rings makes the two sections of the cold shrink tube better fasten the connection with the connected component, effectively preventing impurities such as water vapor and dust from entering, improving the protection performance of the system, and ensuring that the connection part can work stably and reliably in various environments.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structural schematic diagram of the utility model.

[0019] Fig. 2 It is the cross section schematic diagram of the utility model.

[0020] Figs. 1-2 M: 1, pipe body; 2, thick pipe section; 3, thin pipe section; 4, embedded groove; 5, fastener ring; 6, elastic convex ring; 7, dovetail connecting block; 7, semicircle; 8, electromagnetic shielding layer; 9, wear-resistant layer; 10, annular groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0022] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0023] The present application provides a cold shrink tube.

[0024] In the present embodiment, with reference to Figs. 1-2 The cold shrink tube comprises a pipe body 1, the pipe body 1 comprises a thick pipe section 2 and a thin pipe section 3 integrally formed on both ends of the thick pipe section 2, a plurality of embedded grooves 4 are arranged on the inner wall of the thick pipe section 2 at intervals, a fastener ring 5 is embedded in the embedded groove 4, the fastener ring 5 is at least partially arranged to protrude from the inner wall of the thick pipe section, a plurality of elastic convex rings 6 are arranged on the inner wall of the thin pipe section at intervals, and the aperture diameter of the fastener ring is greater than the aperture diameter of the elastic convex ring.

[0025] Compared with the traditional single-diameter cold shrink tube, the cold shrink tube in the above technical solution solves the problem of insufficient space in the middle part and can adapt to larger size cable joints or connecting components. The arrangement of the fastener ring and the elastic convex ring changes the unstable connection and loose fastening of the traditional cold shrink tube, enhances the reliability of the connection, expands the application range of the cold shrink tube, and meets the needs of more complex connection scenarios.

[0026] Specifically, the aperture diameter of the fastener ring is 5-10mm larger than the aperture diameter of the elastic convex ring.

[0027] In the present embodiment, the aperture diameter difference between the fastener ring and the elastic convex ring is 5-10mm. This size difference design enables the cold shrink tube to achieve stable support and tight fitting when facing different specifications of connecting components, thereby improving the practicality and universality of the cold shrink tube in various engineering applications.

[0028] Specifically, the fastener ring is composed of a dovetail connecting block 7 and a semicircular body 11 integrally formed on the dovetail connecting block, and the semicircular body protrudes from the inner wall of the thick pipe section.

[0029] In this embodiment, the fastener ring includes a dovetail connecting block and a semicircular body, which makes the connection of the fastener ring with the embedded groove more stable.

[0030] Specifically, the embedded groove is a dovetail structure matched with the dovetail connecting block.

[0031] In this embodiment, the embedded groove is a dovetail structure matched with the dovetail connecting block, which ensures the fastener ring to be fixed firmly in the pipe body.

[0032] Specifically, the elastic convex ring and the fastener ring are thermoplastic elastomers.

[0033] In this embodiment, the elastic convex ring and the fastener ring are thermoplastic elastomers, which are different from traditional rigid or ordinary elastic materials. The good elasticity and flexibility of thermoplastic elastomers allow the elastic convex ring to tightly wrap the connecting components, solving the problem of poor sealing and fastening effect of traditional materials. At the same time, its wear resistance prolongs the service life of the elastic convex ring and the fastener ring, and the flexibility of the fastener ring enables it to adapt to more shapes and materials of connecting components, improving the comprehensive performance and application range of the cold shrink tube.

[0034] Specifically, the pipe body is embedded with an electromagnetic shielding layer 8.

[0035] In this embodiment, the pipe body is embedded with an electromagnetic shielding layer, which is a function that existing ordinary cold shrink tubes do not have. In complex electromagnetic environments, it effectively solves the problem of internal signal interference, ensures the stability and accuracy of signal transmission, meets the special needs of sensitive fields such as electronics and communications, and expands the application of cold shrink tubes in high-end technical fields.

[0036] Specifically, the surface of the pipe body is compounded with a wear-resistant layer 9 with a thickness of 0.5-1mm.

[0037] In this embodiment, the pipe body is compounded with a wear-resistant layer of 1-3mm thick, which solves the problem of easy wear of the cold shrink tube in harsh environments. Compared with cold shrink tubes without wear-resistant layers, the surface wear resistance of the cold shrink tube is greatly improved, the service life is prolonged, the replacement frequency is reduced, the use cost is reduced, and it is especially suitable for industrial production, outdoor engineering and other scenes with high requirements for the durability of cold shrink tubes.

[0038] Specifically, a plurality of annular grooves 10 are arranged on the outer wall of the pipe body.

[0039] In the embodiment, the annular grooves arranged at intervals on the outer wall of the pipe body can first play a role of preventing slipping. When the cold shrink tube is installed and operated, the hands of the operator or the installation tool is in contact with the annular grooves, so that the friction is increased, the cold shrink tube is prevented from slipping in the hands or the tool, and the installation efficiency and accuracy are improved. Secondly, the annular grooves increase the surface area of the pipe body, which is beneficial to heat dissipation. In the use process of the cold shrink tube, if heat is generated inside, the annular grooves can accelerate heat transfer to the outside, prevent the performance and service life of the cold shrink tube from being affected due to excessively high temperature, and further enhance the durability and reliability of the cold shrink tube.

[0040] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A cold shrink tube comprising a tube body, characterised in that: The pipe body comprises a thick pipe section and thin pipe sections integrally formed on both ends of the thick pipe section, the inner wall of the thick pipe section is provided with a plurality of embedded slots at intervals, the embedded slots are embedded with fastener rings, the fastener rings are at least partially protruding from the inner wall of the thick pipe section, the inner wall of the thin pipe section is provided with a plurality of elastic convex rings at intervals, and the aperture diameter of the fastener ring is larger than the aperture diameter of the elastic convex ring.

2. The cold shrink tube of claim 1, wherein: The aperture diameter of the fastener ring is 5-10 mm larger than the aperture diameter of the elastic convex ring.

3. The cold shrink tube of claim 1, wherein: The fastener ring is composed of a dovetail connecting block and a semicircular body integrally formed on the dovetail connecting block, and the semicircular body protrudes from the inner wall of the thick pipe section.

4. The cold shrink tube of claim 3, wherein: The embedded slots are dovetail structures matched with the dovetail connecting block.

5. The cold shrink tube of any of claims 1-4, wherein: The elastic convex ring and the fastener ring are thermoplastic elastomers.

6. The cold shrink tube of claim 1, wherein: The pipe body is embedded with an electromagnetic shielding layer.

7. The cold shrink tube of claim 1, wherein: The surface of the pipe body is compounded with a wear-resistant layer with a thickness of 0.5-1 mm.

8. The cold shrink tube of claim 1, wherein: The outer wall of the pipe body is provided with a plurality of annular grooves at intervals.

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