Environment-friendly lightweight shielding cable

Abstract

The utility model relates to an environment-friendly light shielding cable, which comprises a cable core, and an insulating layer, a copper wire braided shielding layer, a nano-silver sterilization mildew-proof layer, a steel strip shielding layer, a compression-resistant buffer layer, a flame-retardant belting layer and a low-smoke halogen-free flame-retardant polyolefin sheath are sequentially arranged outside the cable core. The cable core is formed by twisting a plurality of conductors. Graphite powder filling layers are arranged on the outer side of the cable core and the inner side of the insulating layer. And a plurality of outward arc-shaped bulges are uniformly distributed on the inner side and the outer side of the compression-resistant buffer layer. The cable is made of environment-friendly materials, is high in environment-friendly performance, adopts multi-stage shielding, and is good in shielding effect.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, and in particular to an environmentally friendly lightweight shielded cable. Background Art

[0002] Shielded cable uses a metal mesh braided layer to wrap the signal line. Shielding is to ensure the transmission performance of the cable in an environment with electromagnetic interference. The anti-interference performance here should include two aspects, namely the ability to resist external electromagnetic interference and the ability of the system itself to radiate electromagnetic interference.

[0003] Existing cables often only adopt a single-layer shielding setting, and the shielding effect is poor.

[0004] Moreover, general shielded cables are prone to produce a large amount of smoke when a fire occurs, and will produce toxic gases containing halogens such as chlorine, bromine, and fluorine. They have poor flame retardancy and are not environmentally friendly. Utility Model Content

[0005] The utility model aims to solve the deficiencies of the prior art and provide an environmentally friendly lightweight shielded cable.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The invention discloses an environmentally friendly lightweight shielded cable, comprising a cable core, on the outside of which are arranged in sequence an insulation layer, a copper wire braided shielding layer, a nano-silver sterilization and mildew-proof layer, a steel tape shielding layer, a compression buffer layer, a flame-retardant tape layer and a low-smoke halogen-free flame-retardant polyolefin sheath.

[0008] The cable core is composed of several conductors twisted together.

[0009] A graphite powder filling layer is provided on the outside of the cable core and the inside of the insulation layer.

[0010] A plurality of outward arc-shaped protrusions are evenly distributed on the inner side and the outer side of the compression buffer layer.

[0011] The beneficial effects of the utility model are as follows: the utility model is manufactured by adopting environmentally friendly materials, has high environmental protection performance, adopts multi-level shielding, and has good shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] In the figure: 1-cable core; 2-insulation layer; 3-copper wire braided shielding layer; 4-nano silver bactericidal and mildew-proof layer; 5-steel tape shielding layer; 6-compression buffer layer; 7-flame-retardant tape layer; 8-low-smoke halogen-free flame-retardant polyolefin sheath; 9-graphite powder filling layer;

[0014] 11- conductor;

[0015] 61-arc-shaped protrusion;

[0016] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] An environmentally friendly lightweight shielded cable, such as Figure 1 As shown, it includes a cable core 1, and the cable core 1 is provided with an insulating layer 2, a copper wire braided shielding layer 3, a nano silver bactericidal and mildew-proof layer 4, a steel tape shielding layer 5, a compression buffer layer 6, a flame retardant tape layer 7 and a low-smoke halogen-free flame retardant polyolefin sheath 8 in sequence.

[0022] The cable core 1 is formed by twisting a plurality of conductors 11 .

[0023] The conductor 11 is made of 99.99% or more soft round copper wire or tinned soft round copper wire, which is an environmentally friendly copper wire.

[0024] A graphite powder filling layer 9 is provided on the outside of the cable core 1 and the inside of the insulating layer 2. The graphite powder is filled between the cores of the copper strands to lubricate the copper wires without affecting the conductivity, thereby reducing the phenomenon of increased resistance due to the stretching of the copper wires during cable bending.

[0025] The insulating layer 2 and the low-smoke halogen-free flame-retardant polyolefin sheath 8 are both made of low-smoke halogen-free materials with good flame retardant properties. The combustion will not produce toxic gases containing chlorine, bromine, fluorine and other halogens, and is environmentally friendly and pollution-free.

[0026] The copper wire braided shielding layer 3 forms the first shielding function. On the one hand, it has flame retardant properties. On the other hand, it can shield the electromagnetic interference of external currents and the mutual interference between internal currents, making the cable more resistant to interference.

[0027] The nano-silver bactericidal and mildew-proof layer 4 is composed of an extruded material mixed with nano-silver. A certain proportion of nano-silver is added to the extruded material, which is rich in metallic silver ions and can play a role in sterilization and mildew-proofing, and has high environmental protection performance; it also has the function of absorbing harmful electromagnetic waves and converting them into heat energy to dissipate, playing the role of a second layer of shielding.

[0028] The steel tape shielding layer 5 forms a third shielding function. On the one hand, it has flame retardant properties. On the other hand, it can shield electromagnetic interference from external currents and mutual interference between internal currents, making the cable more resistant to interference.

[0029] A plurality of outward arc-shaped protrusions 61 are evenly distributed on the inner side and the outer side of the compression buffer layer 6 .

[0030] The compression buffer layer 6 is made of TPU elastomer material. The inner side of the compression buffer layer 6 is in contact with the steel belt shielding layer 5 , and the outer side of the compression buffer layer 6 is in contact with the flame-retardant wrapping layer 7 .

[0031] The arc-shaped protrusion 61 on the inner side of the compression buffer layer 6 is filled with aramid fiber tensile rope.

[0032] Aramid fiber tensile ropes are filled between two adjacent arc-shaped protrusions 61 on the outer side of the compression buffer layer 6 .

[0033] Aramid fiber tensile rope can improve the tensile performance of the cable.

[0034] The flame retardant tape layer 7 can improve the flame retardant performance of the cable and increase the safety factor.

[0035] The low-smoke, halogen-free, flame-retardant polyolefin sheath 8 is provided with a wear-resistant coating, which reduces the wear rate and helps to extend the service life of the cable.

[0036] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An environmentally friendly lightweight shielded cable, characterized in that: The invention comprises a cable core (1), wherein an insulating layer (2), a copper wire braided shielding layer (3), a nano silver sterilization and mildew-proof layer (4), a steel tape shielding layer (5), a compression buffer layer (6), a flame-retardant tape layer (7) and a low-smoke halogen-free flame-retardant polyolefin sheath (8) are sequentially arranged outside the cable core (1).

2. The environmentally friendly lightweight shielded cable according to claim 1, characterized in that: The cable core (1) is formed by twisting a plurality of conductors (11).

3. The environmentally friendly lightweight shielded cable according to claim 2, characterized in that: A graphite powder filling layer (9) is provided on the outside of the cable core (1) and on the inside of the insulation layer (2).

4. The environmentally friendly lightweight shielded cable according to claim 3, characterized in that: A plurality of outwardly directed arc-shaped protrusions (61) are evenly distributed on the inner side and the outer side of the compression-resistant buffer layer (6).

5. The environmentally friendly lightweight shielded cable according to claim 4, characterized in that: The arc-shaped protrusion (61) on the inner side of the compression buffer layer (6) is filled with aramid fiber tensile rope.

6. The environmentally friendly lightweight shielded cable according to claim 5, characterized in that: Aramid fiber tensile ropes are filled between two adjacent arc-shaped protrusions (61) on the outside of the compression buffer layer (6).

7. The environmentally friendly lightweight shielded cable according to claim 6, characterized in that: The low-smoke, halogen-free, flame-retardant polyolefin sheath (8) is provided with a wear-resistant coating on the outside.

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