An anti-interference waterproof cable

Abstract

This application provides an anti-interference waterproof cable, comprising a conductor, an insulation layer, a shielding layer assembly, and an outer sheath. The shielding layer assembly consists of three layers sequentially composed of metal, conductive silicone rubber, and carbon nanotube film. Compared to traditional cables that use only a single-layer metal film shielding layer, this application, through the superposition of multiple shielding layers of different materials, effectively avoids the shortcomings of the metal shielding layer easily developing gaps and decreasing shielding effectiveness when the cable is bent. The flexibility of the conductive silicone rubber and the high strength of the carbon nanotube film, combined with the good conductivity of the metal shielding layer, make the cable's shielding effectiveness more stable during frequent movement in complex environments, resulting in higher signal transmission stability and reliability, and stronger adaptability to complex environments. It has the advantages of strong practicality and ease of promotion and implementation, and can effectively meet the requirements of cable signal transmission in modern complex environments.

Description

Technical Field

[0001] This application belongs to the field of cable manufacturing technology, specifically relating to an anti-interference waterproof cable. Background Technology

[0002] In existing technologies, cables play a vital role in electronic equipment, industrial systems, and infrastructure, transmitting power and signals to ensure the normal operation of various devices. However, cables currently on the market have some shortcomings in terms of interference resistance and waterproof performance.

[0003] In existing technologies, traditional anti-interference cables mostly use a single-layer metal shielding layer, which is prone to gaps when bent, leading to a decrease in shielding effectiveness. This makes them difficult to adapt to the frequent movement requirements in complex environments, thus affecting the stability and reliability of signal transmission. Waterproof cables, on the other hand, rely on thick sheaths or tape wrapping. Once the sheath is broken, it cannot repair itself, and moisture can easily penetrate the conductor along the cracks, causing safety problems such as short circuits and corrosion, reducing the cable's service life and increasing maintenance costs.

[0004] Therefore, in order to comprehensively improve the anti-interference performance, waterproof performance and environmental adaptability of cables, it is now urgent to make improvements to enhance the operational stability and service life of equipment and meet the high-performance requirements of modern industry and electronic equipment for cables. Utility Model Content

[0005] In order to address the technical problem in the prior art that traditional cables typically use a single-layer metal film as the shielding layer, which easily creates gaps in the shielding layer when the cable is bent, leading to a decrease in shielding effectiveness and difficulty in adapting to the frequent movement requirements in complex environments, thereby affecting the stability and reliability of signal transmission, this application proposes an anti-interference waterproof cable.

[0006] This application adopts the following solution: an anti-interference waterproof cable, comprising a conductor, an insulation layer covering the outer periphery of the conductor, a shielding layer group covering the outer periphery of the insulation layer, and an outer sheath layer covering the outer periphery of the shielding layer group. The shielding layer group includes a first shielding layer covering the outer periphery of the insulation layer, a second shielding layer covering the outer periphery of the first shielding layer, and a third shielding layer covering the outer periphery of the second shielding layer. The first shielding layer is made of metal, the second shielding layer is made of conductive silicone rubber, and the third shielding layer is made of carbon nanotube film.

[0007] In some feasible embodiments, the second shielding layer includes a layered body and a corrugated assembly disposed on the outer periphery of the layered body. The corrugated assembly includes wave crests, wave troughs and clearance gaps disposed between the wave crests and the wave troughs, which are alternately arranged along the length of the cable. The length of the clearance gap is defined as L, and L satisfies the following relationship: 1mm≤L≤3mm.

[0008] For example, the value of L can be 1mm, 1.5mm, 2mm, 2.5mm, or 3mm.

[0009] In some feasible embodiments, the height of the crest and the trough are equal, and the height of the crest and the trough is defined as H, wherein H satisfies the following relationship: 0.1mm≤H≤0.5mm.

[0010] For example, the value of H is selected as 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm.

[0011] In some feasible embodiments, the first shielding layer is a mesh covering the outer periphery of the insulating layer, and the mesh size of the first shielding layer is defined as A, wherein A satisfies the following relationship: 100 mesh ≤ A ≤ 120 mesh.

[0012] For example, the value of A can be 100 mesh, 110 mesh, or 120 mesh.

[0013] In some feasible embodiments, the first shielding layer is made of silver-plated copper wire.

[0014] In some feasible embodiments, the outer sheath layer is made of thermoplastic polyurethane.

[0015] In some feasible embodiments, the thickness of the outer sheath layer is defined as B, wherein B satisfies the following relationship: 0.5mm≤B≤0.8mm.

[0016] For example, the value of B is selected as 0.5mm, 0.6mm, 0.7mm, or 0.8mm.

[0017] In some feasible embodiments, the insulating layer is made of foamed polyethylene.

[0018] In some feasible embodiments, the conductor is made of multiple conductor filaments twisted together, and the number of conductor filaments is defined as N, where N satisfies the following relationship: 10≤N≤28.

[0019] For example, the value of N can be 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, or 28.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application provides an anti-interference waterproof cable, comprising a conductor, an insulation layer, a shielding layer assembly, and an outer sheath. The shielding layer includes a first shielding layer, a second shielding layer, and a third shielding layer. Compared to traditional cables that only use a single-layer metal film shielding layer, this application, through the superposition of multiple shielding layers of different materials, effectively avoids the occurrence of gaps in the metal shielding layer and a decrease in shielding effectiveness when the cable is bent. The flexibility of conductive silicone rubber ensures that the cable maintains shielding integrity during frequent bending, while the high strength and electromagnetic shielding effectiveness of the carbon nanotube film further enhance the anti-interference capability of high-frequency signal transmission. Combined with the low impedance characteristics of the metal shielding layer, a multi-dimensional three-dimensional shielding structure is formed, making the shielding effectiveness more stable during frequent movement in complex environments, significantly improving signal transmission stability and reliability. At the same time, the waterproof structure of the outer sheath enhances environmental adaptability. This utility model, through material and structural innovation, solves the problem of shielding effectiveness attenuation in traditional cables under dynamic operating conditions. It can be widely used in high-frequency signal transmission scenarios such as industrial automation, mobile communication base stations, and new energy vehicle charging cables. It has the advantages of strong practicality and ease of promotion and implementation, meeting the high reliability requirements of cable signal transmission in modern complex environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of an anti-interference waterproof cable according to this application;

[0023] Figure 2 This is a top view of the second shielding layer of this application. Detailed Implementation

[0024] Combination Figure 1-2 The following description further illustrates the technical solution proposed in this application. This application provides an anti-interference waterproof cable, comprising a conductor 1, an insulation layer 2 covering the outer periphery of the conductor 1, a shielding layer group 3 covering the outer periphery of the insulation layer 2, and an outer sheath layer 4 covering the outer periphery of the shielding layer group 3. The shielding layer group 3 includes a first shielding layer 30 covering the outer periphery of the insulation layer 2, a second shielding layer 31 covering the outer periphery of the first shielding layer 30, and a third shielding layer 32 covering the outer periphery of the second shielding layer 31. The first shielding layer 30 is made of metal, the second shielding layer 31 is made of conductive silicone rubber, and the third shielding layer 32 is made of carbon nanotube film.

[0025] Carbon nanotube membranes are common knowledge in the field and can be obtained by those skilled in the art without creative effort, so they will not be elaborated on here. For more information on carbon nanotube membranes, please refer to the following website A.

[0026] Website A: https: / / baike.baidu.com / item / %E7%A2%B3%E7%BA%B3%E7%B1%B3%E7%AE%A1%E8%96%84%E8%86%9C / 59170700.

[0027] This application provides an anti-interference waterproof cable, comprising a conductor, an insulation layer, a shielding layer assembly, and an outer sheath. The shielding layer assembly consists of three layers sequentially composed of metal, conductive silicone rubber, and carbon nanotube film. Compared to traditional cables that use only a single-layer metal film shielding layer, this application, through the superposition of multiple shielding layers of different materials, effectively avoids the shortcomings of the metal shielding layer easily developing gaps and decreasing shielding effectiveness when the cable is bent. The flexibility of the conductive silicone rubber and the high strength of the carbon nanotube film, combined with the good conductivity of the metal shielding layer, make the cable's shielding effectiveness more stable during frequent movement in complex environments, resulting in higher signal transmission stability and reliability, and stronger adaptability to complex environments. It has the advantages of strong practicality and ease of promotion and implementation, and can effectively meet the requirements of cable signal transmission in modern complex environments.

[0028] In this embodiment, the second shielding layer 31 includes a layered main body 50 and a corrugated assembly 51 disposed on the outer periphery of the layered main body 50. The corrugated assembly 51 includes a crest portion 510, a trough portion 511 alternately arranged along the cable length direction, and a clearance gap 512 disposed between the crest portion 510 and the trough portion 511. The length of the clearance gap 512 is defined as L, and L satisfies the following relationship: 1mm≤L≤3mm.

[0029] In this embodiment, the height of the crest portion 510 and the trough portion 511 are equal. The height of the crest portion 510 and the trough portion 511 is defined as H, and H satisfies the following relationship: 0.1mm≤H≤0.5mm.

[0030] In this embodiment, the first shielding layer 30 is wrapped around the outer periphery of the insulating layer 2 in a mesh shape. The mesh size of the first shielding layer 30 is defined as A, and A satisfies the following relationship: 100 mesh ≤ A ≤ 120 mesh.

[0031] In this embodiment, the first shielding layer 30 is made of silver-plated copper wire.

[0032] In practice, setting up a shielding layer group has the following advantages:

[0033] Firstly, the silver-plated copper wire braid layer has extremely high conductivity, effectively reflecting and absorbing electromagnetic interference, reducing the impact of external electromagnetic fields on internal signals. The high-density 120-mesh braid ensures the continuity and integrity of the shielding, improving its effectiveness.

[0034] Secondly, the silver plating further reduces the contact resistance between the copper wires, ensuring smooth current flow inside the shielding layer, which helps guide interference signals to ground and enhances the shielding effect.

[0035] Third, the copper wire braided structure gives the inner shielding layer good flexibility and mechanical strength, which can adapt to the bending and twisting of the cable, while maintaining stable shielding performance during long-term use.

[0036] Fourth, the carbon nanotube film layered structure and the conductive silicone layered structure have excellent flexibility, which can provide an additional mechanical protection layer for the cable.

[0037] Fifth, the use of corrugated components increases the compressive and abrasion resistance of the shielding layer while allowing for a certain degree of bending flexibility.

[0038] In this embodiment, the outer sheath layer 4 is made of thermoplastic polyurethane.

[0039] In actual implementation, thermoplastic polyurethane is selected as the outer sheath layer because it has the advantages of high wear resistance, high tear strength, balance of elasticity and flexibility, oil and solvent resistance, and hydrolysis resistance.

[0040] In this embodiment, the thickness of the outer sheath layer 4 is defined as B, and B satisfies the following relationship: 0.5mm≤B≤0.8mm.

[0041] In this embodiment, the insulating layer 2 is made of foamed polyethylene.

[0042] In practical implementation, using foamed polyethylene as the insulation layer has the following advantages:

[0043] Firstly, it is lightweight and high-strength. Foamed polyethylene, through physical or chemical foaming technology, forms a large number of tiny air bubbles inside the material, thereby significantly reducing the material's density and achieving lightweighting. At the same time, its unique cell structure maintains high mechanical strength while remaining lightweight, providing effective support and protection for cables or pipes.

[0044] Secondly, it possesses excellent thermal insulation properties. The air bubbles in foamed polyethylene effectively block heat transfer and have an extremely low thermal conductivity. The foamed polyethylene insulation layer reduces the impact of external temperature on the conductor, maintains stable internal cable temperature, and improves the cable's current-carrying capacity and service life.

[0045] Thirdly, it has excellent waterproof and moisture-proof properties. Foamed polyethylene material itself is hydrophobic, and its closed-cell structure effectively prevents moisture penetration, providing reliable waterproof and moisture-proof protection for cables. In humid or underwater environments, the foamed polyethylene insulation layer ensures that the internal conductor channels are not corroded by moisture, maintaining stable electrical performance or fluid transport capacity.

[0046] Fourth, it has good chemical corrosion resistance. Foamed polyethylene has strong resistance to chemicals such as acids, alkalis, and salts, and can maintain stable performance in harsh chemical environments.

[0047] Fifth, it has excellent processing performance. Foamed polyethylene material has good plasticity and processing properties, and can be processed into insulation layers of various shapes and sizes through various processes such as extrusion, molding, and cutting. This provides great flexibility to meet the insulation requirements of different cables or pipes.

[0048] In this embodiment, the conductor 1 is formed by twisting together multiple conductor wires 10. The number of conductor wires 10 is defined as N, and N satisfies the following relationship: 10≤N≤28.

[0049] In actual implementation, tin-plated copper wire is selected as the material for the conductor monofilament. Using tin-plated copper wire as the conductor monofilament has the following advantages:

[0050] Firstly, it enhances the conductor's corrosion resistance. As a dense protective film, the tin plating layer effectively isolates the copper wire from direct contact with air, moisture, and corrosive substances, significantly improving the copper wire's corrosion resistance and extending its service life.

[0051] Secondly, it improves the processability of the conductor. During the welding process, the tin layer of the tin-plated copper wire can melt quickly and form a good alloy layer with the solder, ensuring the strength and conductivity of the weld.

[0052] Thirdly, it reduces oxidation and contact resistance. The tin plating layer prevents oxidation of the copper wire surface, keeping it clean and smooth, thereby reducing contact resistance. In electrical connections, low contact resistance means less energy loss and more stable signal transmission.

[0053] Fourth, it improves the performance of the conductor. The tin plating layer can serve as a wear-resistant protective layer for the copper wire, reducing surface damage caused by friction or scratches.

[0054] This application provides an anti-interference waterproof cable, comprising a conductor, an insulation layer, a shielding layer assembly, and an outer sheath. The shielding layer assembly consists of three layers sequentially composed of metal, conductive silicone rubber, and carbon nanotube film. Compared to traditional cables that use only a single-layer metal film shielding layer, this application, through the superposition of multiple shielding layers of different materials, effectively avoids the shortcomings of the metal shielding layer easily developing gaps and decreasing shielding effectiveness when the cable is bent. The flexibility of the conductive silicone rubber and the high strength of the carbon nanotube film, combined with the good conductivity of the metal shielding layer, make the cable's shielding effectiveness more stable during frequent movement in complex environments, resulting in higher signal transmission stability and reliability, and stronger adaptability to complex environments. It has the advantages of strong practicality and ease of promotion and implementation, and can effectively meet the requirements of cable signal transmission in modern complex environments.

[0055] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An anti-interference waterproof cable, characterized in that, The device includes a conductor (1), an insulating layer (2) covering the outer periphery of the conductor (1), a shielding layer group (3) covering the outer periphery of the insulating layer (2), and an outer sheath layer (4) covering the outer periphery of the shielding layer group (3). The shielding layer group (3) includes a first shielding layer (30) covering the outer periphery of the insulating layer (2), a second shielding layer (31) covering the outer periphery of the first shielding layer (30), and a third shielding layer (32) covering the outer periphery of the second shielding layer (31). The first shielding layer (30) is made of metal, the second shielding layer (31) is made of conductive silicone rubber, and the third shielding layer (32) is made of carbon nanotube film. The second shielding layer (31) includes a layered body (50) and a corrugated assembly (51) disposed on the outer periphery of the layered body (50). The corrugated assembly (51) includes a crest portion (510) and a trough portion (511) alternately arranged along the length direction of the cable, and a clearance gap (512) disposed between the crest portion (510) and the trough portion (511). The length of the clearance gap (512) is defined as L, and L satisfies the following relationship: 1mm≤L≤3mm; The height of the crest (510) and the trough (511) are equal. The height of the crest (510) and the trough (511) is defined as H, and H satisfies the following relationship: 0.1mm≤H≤0.5mm.

2. The anti-interference waterproof cable according to claim 1, characterized in that, The first shielding layer (30) is wrapped around the outer periphery of the insulating layer (2) in a mesh shape. The mesh size of the first shielding layer (30) is defined as A, and A satisfies the following relationship: 100 mesh ≤ A ≤ 120 mesh.

3. The anti-interference waterproof cable according to claim 1, characterized in that, The first shielding layer (30) is made of silver-plated copper wire.

4. The anti-interference waterproof cable according to claim 1, characterized in that, The outer sheath layer (4) is made of thermoplastic polyurethane.

5. The anti-interference waterproof cable according to claim 1, characterized in that, The thickness of the outer sheath layer (4) is defined as B, and B satisfies the following relationship: 0.5mm≤B≤0.8mm.

6. The anti-interference waterproof cable according to claim 1, characterized in that, The insulating layer (2) is made of foamed polyethylene.

7. The anti-interference waterproof cable according to claim 1, characterized in that, The conductor (1) is formed by twisting together multiple conductor filaments (10). The number of conductor filaments (10) is defined as N, and N satisfies the following relationship: 10≤N≤28.

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