High-interference-resistance rat-proof and termite-proof digital communication cable

Abstract

The invention discloses a high anti-interference rat-and-termite-proof digital communication cable, which comprises wires, a belting layer, a shielding layer, an inner sheath layer, an armor layer, an outer sheath layer, a smooth layer and a drain wire, and is characterized in that the plurality of wires twisted together are uniformly collected by the belting layer and jointly form a cable core; the shielding layer, the inner sheath layer, the armor layer, the outer sheath layer and the smooth layer are sequentially arranged outside the cable core, and the drain wire is longitudinally arranged between the belting layer and the shielding layer, so that the purposes of better rat and ant prevention and environmental friendliness can be achieved, the stability and safety of information transmission are guaranteed, and the service life of the cable is prolonged. The device can be applied to multiple fields of industry, building, communication and the like, and provides reliable data signal transmission and control support for various devices and systems.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, in particular to the technical field of digital communication cables. Background Art

[0002] Digital communication cable is a cable used to transmit data or signals in digital communication systems. It is widely used in local area networks, wide area networks, telephone networks and television signal transmission. It is one of the infrastructures of industries such as the electronic information industry and the wired communication industry. Rats and ants are one of the main hazards that damage digital communication cables. When digital communication cables attacked by rats and ants are damp or flooded, it is easy to cause leakage and short circuits, leading to power outages, telecommunications interruptions, fires and even explosions.

[0003] In order to prevent digital communication cables from being attacked by rats and ants, some manufacturers choose to inject gas that can repel rats and ants into the cable interlayer located outside the cable core (such as a rat-proof high-toughness cable with publication number CN117854816A) or wrap an armor structure outside the cable core to enhance the bite resistance of the cable (such as a new type of rat-proof and termite-proof communication cable with announcement number CN203242385U and an environmentally friendly rat-proof and water-blocking composite cable with publication number CN103310880A); however, the cable injected with gas that can repel rats and ants can easily leak the gas completely when bitten, so that only a single rat-proofing can be achieved; in addition, there is a problem that the effect of preventing rats and ants from attacking is relatively limited if only an armor structure is installed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a highly anti-interference rat and ant proof digital communication cable with good rat and ant proof function.

[0005] To achieve the above-mentioned purpose, the present invention proposes a highly anti-interference, rat- and ant-proof digital communication cable, comprising a conductor, a tape layer, a shielding layer, an inner sheath layer, an armor layer, an outer sheath layer, a smooth layer and a leakage line. A plurality of twisted conductors are uniformly gathered by the tape layer and together form a cable core. The shielding layer, inner sheath layer, armor layer, outer sheath layer and smooth layer are sequentially arranged outside the cable core, and the leakage line is vertically placed between the tape layer and the shielding layer.

[0006] Preferably, the conductor comprises a core wire and an insulating layer, the core wire is a copper wire with a wire gauge of 20 to 28 AWG, the insulating layer is a polyethylene layer extruded and coated on the outside of the copper wire, and the thickness of the polyethylene layer is controlled to be 0.2 to 0.3 mm, the conductors are twisted in pairs to form a twisted pair group, and the twisting pitch of the twisted pair group is controlled to be 10 to 35 mm, several groups of the twisted pair groups are twisted together to form a unit group, and several groups of the unit groups are twisted together to form a twisted core, and the tape layer is a polyester tape wrapped around the twisted core, and the thickness of the polyester tape is controlled to be 0.01 to 0.05 mm.

[0007] Preferably, the shielding layer is a single-sided aluminum foil wrapped around the tape layer, and the thickness of the single-sided aluminum foil is not less than 0.04 mm.

[0008] Preferably, the inner sheath layer is a flame retardant polyvinyl chloride layer extruded and coated outside the shielding layer, and the thickness of the flame retardant polyvinyl chloride layer is controlled at 0.6-1.0 mm, and the outer sheath layer is a flame retardant polyethylene layer extruded and coated outside the armor layer, and the thickness of the flame retardant polyethylene layer is controlled at 0.5-1.5 mm. The sheath material of the inner sheath layer and / or the outer sheath layer is also mixed with anti-rat and ant agents.

[0009] Preferably, the armor layer is a steel-plastic composite tape wrapped around the inner sheath layer, and the thickness of the steel-plastic composite tape is controlled at 0.2-0.8 mm. The steel-plastic composite tape has surface corrugations, and the corrugation depth is controlled at 0.1-0.6 mm.

[0010] Preferably, the smooth layer is a graphite layer coated on the surface of the outer sheath layer, and the thickness of the graphite layer is controlled to be 0.05-0.2 mm.

[0011] Preferably, the leakage wire is a tinned copper wire and the outer diameter is controlled at 0.3-0.5 mm.

[0012] Preferably, it further includes an isolation layer, which is arranged between the armor layer and the outer sheath layer or between the inner sheath layer and the armor layer, and the isolation layer includes a drug-carrying layer and a material-carrying layer, the drug-carrying layer has a plurality of drug storage portions which are discontinuously arranged and store rat and ant-proofing agents, and the material-carrying layer has a plurality of material storage portions which are discontinuously arranged and store glue or water-swellable materials.

[0013] Preferably, the drug-carrying layer includes a first base film and a first sealing film, a plurality of drug pockets distributed in a dot-like or strip-like shape are provided on the first base film, each of the drug pockets is filled with an anti-rat and ant agent to form a drug storage portion, the first sealing film is compounded on the first base film and closes the openings of each drug pocket, the material layer includes a second base film and a second sealing film, a plurality of material pockets distributed in a dot-like or strip-like shape are provided on the second base film, each of the material pockets is filled with glue or water-swellable material to form a material storage portion, the second sealing film is compounded on the second base film and closes the openings of each material pocket.

[0014] Preferably, the side of the second base film having the pocket material pocket is fixed together with the side of the first base film having the pocket medicine pocket.

[0015] Beneficial effects of the present invention: 1) By coating a smooth layer on the surface of the outer sheath layer and setting an armor layer on the inner side of the outer sheath layer, the cable's resistance to biting can be improved by physical methods, making it difficult for rats and ants to bite the cable, achieving better anti-rat and ant and environmental friendliness, ensuring the stability and security of information transmission, and can be applied to multiple fields such as industry, construction and communications, and provide reliable data signal transmission and control support for various equipment and systems; 2) By mixing anti-rat and ant agents into the sheath material of the inner sheath layer and / or the outer sheath layer, the cable can be actively driven away from rats and ants by combining chemical and physical means, thereby further preventing the cable from being damaged by rats and ants; 3) By adding an isolation layer composed of a drug layer and a material layer between the armor layer and the outer sheath layer or between the inner sheath layer and the armor layer, and respectively arranging a plurality of drug storage sections storing rat and ant repellent agents and a plurality of material storage sections storing glue or water-swelling materials on the drug layer and the material layer, on the one hand, only part of the rat and ant repellent agents can be released in the damaged area to avoid the all-round leakage of the rat and ant repellent agents, and on the other hand, the solidified glue or the swollen water-swelling materials can be used to consolidate and support the damaged area to avoid the damaged area from being easily broken in a short time.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the first embodiment; Figure 2 is a cross-sectional view of the second embodiment; Figure 3 is a cross-sectional view of the isolation layer of Example 2; Figure 4 yes Figure 3 Explosion diagram of Figure 5 yes Figure 4 Schematic diagram of the structure of removing anti-rat and ant agents and liquid.

[0018] In the figure: 1-conductor, 11-core wire, 12-insulating layer, 2-tape layer, 3-shielding layer, 4-inner sheath layer, 5-armor layer, 6-outer sheath layer, 7-smooth layer, 8-leakage line, 9-isolation layer, 91-drug layer, 911-first base film, 912-first sealing film, 913-drug storage part, 92-material layer, 921-second base film, 922-second sealing film, 923-material storage part. DETAILED DESCRIPTION

[0019] Embodiment 1: See also Figure 1 The high anti-interference rat and ant proof digital communication cable of the present invention comprises a conductor 1, a tape layer 2, a shielding layer 3, an inner sheath layer 4, an armor layer 5, an outer sheath layer 6, a smooth layer 7 and a leakage line 8. A plurality of conductors 1 twisted together are uniformly gathered by the tape layer 2 and jointly form a cable core. The shielding layer 3, the inner sheath layer 4, the armor layer 5, the outer sheath layer 6 and the smooth layer 7 are sequentially arranged outside the cable core, and the leakage line 8 is vertically placed between the tape layer 2 and the shielding layer 3.

[0020] The conductor 1 includes a core wire 11 and an insulating layer 12, wherein the core wire 11 is a copper wire of 24 AWG wire gauge, and the insulating layer 12 is a polyethylene layer extruded and coated on the outside of the copper wire, and the thickness of the polyethylene layer is controlled to be 0.25 mm. The conductors 1 are twisted in pairs to form a twisted pair group, and the twisting pitch of the twisted pair group is controlled to be 10-35 mm. Twenty-five groups of the twisted pairs are twisted together to form a unit group, and four groups of the unit groups are twisted together to form a twisted core; wherein, the twisting pitch of the twisted pair of 10-35 mm can not only improve the crosstalk problem between wire groups, but also improve the stability of indicators such as return loss and characteristic impedance; in addition, ten different colors of insulating sheaths can be used as the insulating layer 12, and the ten colors of insulating single wires are twisted in a certain color sequence.

[0021] The tape layer 2 is a polyester tape wrapped around the twisted core, and the thickness of the polyester tape is controlled at 0.02 mm.

[0022] The shielding layer 3 is a single-sided aluminum foil wrapped around the tape layer 2, and the thickness of the single-sided aluminum foil is 0.04 mm. The armor layer 5 is a steel-plastic composite tape wrapped around the inner sheath layer 4, and the thickness of the steel-plastic composite tape is controlled at 0.5 mm. The steel-plastic composite tape has surface embossing, and the embossing depth is controlled at 0.1-0.3 mm. Among them, the single-sided aluminum foil and the steel-plastic composite tape can respectively improve the anti-interference ability of the cable inside and outside. In addition, the steel-plastic composite tape can not only improve the compressive performance of the cable, but also improve the cable's resistance to rats and ants.

[0023] The inner sheath layer 4 is a flame retardant polyvinyl chloride layer extruded and coated outside the shielding layer 3, and the thickness of the flame retardant polyvinyl chloride layer is controlled to be 0.8 mm. The outer sheath layer 6 is a flame retardant polyethylene layer extruded and coated outside the armor layer 5, and the thickness of the flame retardant polyethylene layer is controlled to be 1.2 mm. The sheath material of the inner sheath layer 4 and / or the outer sheath layer 6 is also mixed with an anti-rat and ant agent; wherein the flame retardant polyvinyl chloride layer is a polymer material made by adding a flame retardant to ordinary polyvinyl chloride, and the flame retardant polyethylene is a polymer material made by adding a flame retardant to ordinary polyethylene; such a design can utilize the flame retardant polyvinyl chloride layer and the flame retardant polyvinyl chloride layer to form an inner and outer double-layer flame retardant structure, improve the flame retardant performance of the cable, and make it meet the requirements of Class C bundle combustion; in addition, the anti-rat and ant agent (such as capsaicin powder) mixed into the sheath material of the inner sheath layer 4 and / or the outer sheath layer 6 can further prevent rats and ants while maintaining environmental protection.

[0024] The smooth layer 7 is a graphite layer coated on the surface of the outer sheath layer 6 and the thickness of the graphite layer is controlled at 0.1 mm. The graphite layer uniformly and continuously coated outside the outer sheath layer 6 can make it difficult for mice and termites to easily gnaw the cable. This not only meets the requirements of preventing mice and termites from the cable, but also achieves the purpose of environmental protection and safety.

[0025] The leakage line 8 is a tinned copper wire and its outer diameter is controlled at 0.4 mm.

[0026] Embodiment 2: See also Figures 2 to 5 , and also includes an isolation layer 9, which is arranged between the armor layer 5 and the outer sheath layer 6 or between the inner sheath layer 4 and the armor layer 5, and the isolation layer 9 includes a drug-carrying layer 91 and a material-carrying layer 92, the drug-carrying layer 91 has a plurality of drug storage parts 913 for storing rat-proof and ant-proof agents in a discontinuous manner, and the material-carrying layer 92 has a plurality of material storage parts 923 for storing glue or water-swelling materials in a discontinuous manner; wherein the rat-proof and ant-proof agent can be a capsaicin solution, and the water-swelling material can be a water-swelling resin.

[0027] The drug-carrying layer 91 includes a first base film 911 and a first sealing film 912. A plurality of drug pockets distributed in a dot-like or strip-like shape are provided on the first base film 911. Each of the drug pockets is filled with an anti-rat and ant agent to form a drug storage portion 913. The first sealing film 912 is compounded on the first base film 911 and seals the openings of each drug pocket. The material layer 92 includes a second base film 921 and a second sealing film 922. A plurality of material pockets distributed in a dot-like or strip-like shape are provided on the second base film 921. Each of the material pockets is filled with glue or water-swellable material to form a material storage portion 923. The second sealing film 922 is compounded on the second base film 921 and seals the openings of each material pocket.

[0028] The side of the second base film 921 having the material pocket is fixed to the side of the first base film 911 having the medicine pocket.

[0029] The rest is the same as in the first embodiment.

[0030] In this embodiment, when rats and ants gnaw on the isolation layer 9, the drug layer 91 can release the rat-proofing agent through the damaged drug bags to achieve the purpose of driving away rats and ants; the remaining rat-proofing agent can continue to be stored in other undamaged drug bags.

[0031] In addition, the pocket material bag located near the damaged pocket medicine bag has a greater chance of being bitten and releasing glue or water-swelling material at the same time; among them, the glue can release the liquid of the isolation layer 9 and adhere the relatively contracted part to the original position as much as possible, while the water-swelling material can gradually absorb water and expand in situ, thereby avoiding accelerated rupture of the damaged part.

[0032] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. Highly anti-interference, rat and ant-proof digital communication cable, characterized by: The invention comprises a conductor (1), a tape layer (2), a shielding layer (3), an inner sheath layer (4), an armor layer (5), an outer sheath layer (6), a smooth layer (7) and a leakage line (8); a plurality of conductors (1) twisted together are gathered together by the tape layer (2) and together form a cable core; the shielding layer (3), the inner sheath layer (4), the armor layer (5), the outer sheath layer (6) and the smooth layer (7) are sequentially arranged outside the cable core; and the leakage line (8) is vertically placed between the tape layer (2) and the shielding layer (3).

2. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The conductor (1) comprises a core wire (11) and an insulating layer (12), wherein the core wire (11) is a copper wire with a wire gauge of 20 to 28 AWG, and the insulating layer (12) is a polyethylene layer extruded and coated on the outside of the copper wire, and the thickness of the polyethylene layer is controlled to be 0.2 to 0.3 mm. The conductors (1) are twisted in pairs to form a twisted pair group, and the twist pitch of the twisted pair group is controlled to be 10 to 35 mm. Several groups of the twisted pair groups are twisted together to form a unit group, and several groups of the unit groups are twisted together to form a twisted core. The tape layer (2) is a polyester tape wrapped around the twisted core, and the thickness of the polyester tape is controlled to be 0.01 to 0.05 mm.

3. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The shielding layer (3) is a single-sided aluminum foil wrapped around the wrapping layer (2), and the thickness of the single-sided aluminum foil is not less than 0.04 mm.

4. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The inner sheath layer (4) is a flame retardant polyvinyl chloride layer extruded and coated outside the shielding layer (3), and the thickness of the flame retardant polyvinyl chloride layer is controlled to be 0.6-1.0 mm. The outer sheath layer (6) is a flame retardant polyethylene layer extruded and coated outside the armor layer (5), and the thickness of the flame retardant polyethylene layer is controlled to be 0.5-1.5 mm. The sheath material of the inner sheath layer (4) and / or the outer sheath layer (6) is also mixed with a rat and ant repellent.

5. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The armor layer (5) is a steel-plastic composite tape wrapped around the inner sheath layer (4), and the thickness of the steel-plastic composite tape is controlled to be 0.2-0.8 mm. The steel-plastic composite tape has surface embossing, and the embossing depth is controlled to be 0.1-0.6 mm.

6. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The smooth layer (7) is a graphite layer coated on the surface of the outer sheath layer (6), and the thickness of the graphite layer is controlled to be 0.05 to 0.2 mm.

7. The high anti-interference rat and ant-proof digital communication cable according to claim 1, characterized in that: The leakage line (8) is a tinned copper wire and its outer diameter is controlled within the range of 0.3 to 0.5 mm.

8. The high anti-interference, rat and ant proof digital communication cable according to any one of claims 1 to 7, characterized in that: The invention also comprises an isolation layer (9), the isolation layer (9) being arranged between the armor layer (5) and the outer sheath layer (6) or between the inner sheath layer (4) and the armor layer (5), the isolation layer (9) comprising a drug-carrying layer (91) and a material-carrying layer (92), the drug-carrying layer (91) having a plurality of drug storage portions (913) storing rat and ant-proofing agents arranged in a discontinuous manner, and the material-carrying layer (92) having a plurality of material storage portions (923) storing glue or water-swelling materials arranged in a discontinuous manner.

9. The high anti-interference rat and ant-proof digital communication cable according to claim 8, characterized in that: The drug-carrying layer (91) comprises a first base film (911) and a first sealing film (912); a plurality of drug pockets distributed in a dot-like or strip-like manner are arranged on the first base film (911); each of the drug pockets is filled with a rat-ant repellent agent to form a drug storage portion (913); the first sealing film (912) is compounded on the first base film (911) and seals the openings of each drug pocket; the material-carrying layer (92) comprises a second base film (921) and a second sealing film (922); a plurality of material pockets distributed in a dot-like or strip-like manner are arranged on the second base film (921); each of the material pockets is filled with glue or water-swellable material to form a material storage portion (923); the second sealing film (922) is compounded on the second base film (921) and seals the openings of each material pocket.

10. The high anti-interference rat and ant-proof digital communication cable according to claim 9, characterized in that: The side of the second base film (921) having the material pocket is fixed together with the side of the first base film (911) having the medicine pocket.

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