Anti-interference magnetic shielding wire

Abstract

The utility model relates to an anti-interference magnetic shielding wire, which belongs to the technical field of shielding wires and comprises a support and three shielding wire bodies positioned inside the support, a protective layer is fixed on the outer surface of each shielding wire body, a filling layer is fixed inside the support, and an anti-interference mechanism is arranged on the outer surface of the filling layer. And a protection mechanism is arranged on the outer surface of the anti-interference mechanism. The anti-interference magnetic shielding wire is composed of a first anti-interference layer, a second anti-interference layer, a weather-proof layer and an insulating layer through an anti-interference mechanism, the first anti-interference layer is a metal shielding net, the second anti-interference layer is semiconductor paper, the weather-proof layer is epoxy resin, and the insulating layer is a polyimide film. Through the arrangement of the first anti-interference layer, the second anti-interference layer, the weather-proof layer and the insulating layer, the anti-interference performance of the shielded wire body is improved, the weather-proof performance and the insulating performance of the shielded wire body are also improved, and the use of the shielded wire body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of shielded wires, in particular to an anti-interference magnetic shielded wire. Background Technique

[0002] A shielded wire is a transmission line that uses a metal mesh braid to wrap the signal wire. The braid is generally red copper or tinned copper. The shielding layer of the shielded wire needs to be grounded, and external interference signals can be introduced into the ground by this layer. The shielded wire is a special wire with a metal braided outer shell used to reduce the influence of external electromagnetic fields on power supplies or communication lines. This kind of shielded wire also has the function of preventing the line from radiating electromagnetic energy outward.

[0003] For example, a shielded wire is disclosed in a Chinese patent (publication number: CN211427879U). The shielded wire includes an insulating layer, a metal wire, a shielding layer, and an isolation layer. The insulating layer is attached to one surface of the metal wire, the shielding layer is attached to the other surface of the metal wire, the metal wire is wrapped between the insulating layer and the shielding layer, and the isolation layer is attached to the side of the shielding layer away from the insulating layer. Among them, the isolation layer is used to isolate the insulating layer and the shielding layer during wire bundling. Through the above settings, the influence of the shielding layer on the high-frequency performance of the non-shielding layer can be reduced, and the internal interference of the shielded wire can be reduced.

[0004] The above-mentioned shielded wire still has certain deficiencies. The isolation layer is used to isolate the insulating layer and the shielding layer during wire bundling, which can reduce the influence of the shielding layer on the high-frequency performance of the non-shielding layer and reduce the internal interference of the shielded wire. However, it is extremely vulnerable to external electromagnetic fields and the electromagnetic fields between the internal core wires during transmission, resulting in a large signal error when transmitted to the terminal instrument. Therefore, an anti-interference magnetic shielded wire is proposed to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an anti-interference magnetic shielded wire, which has the advantages of good anti-interference effect and solves the problem of poor anti-interference effect of the existing shielded wire.

[0006] To achieve the above object, the utility model provides the following technical solution: an anti-interference magnetic shielded wire, including a bracket and three shielded wire bodies located inside the bracket. A protective layer is fixed on the outer surface of the shielded wire body. A filling layer is fixed inside the bracket. An anti-interference mechanism is arranged on the outer surface of the filling layer, and a protection mechanism is arranged on the outer surface of the anti-interference mechanism;

[0007] The anti-interference mechanism includes a first anti-interference layer fixed on the outer surface of the filling layer. A second anti-interference layer is fixed on the outer surface of the first anti-interference layer. A weather-resistant layer is fixed on the outer surface of the second anti-interference layer. An insulating layer is fixed on the outer surface of the weather-resistant layer.

[0008] Further, the first anti-interference layer is a metal shielding net, and the second anti-interference layer is a semiconductor paper.

[0009] Further, the weather-resistant layer is epoxy resin, and the insulating layer is a polyimide film.

[0010] Further, the filling layer is an ABS resin, and the protective layer is polyvinyl chloride.

[0011] Further, the protection mechanism includes a compressive layer fixed to the outer surface of the insulating layer, a waterproof layer fixed to the outer surface of the compressive layer, a fireproof layer fixed to the outer surface of the waterproof layer, and a wear-resistant layer fixed to the outer surface of the fireproof layer.

[0012] Further, the compressive layer is polypropylene, and the waterproof layer is a polyurethane waterproof coating.

[0013] Further, the fireproof layer is polycarbonate, and the wear-resistant layer is nylon.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] 1. The anti-interference magnetic shielding wire, through the anti-interference mechanism, consists of a first anti-interference layer, a second anti-interference layer, a weather-resistant layer, and an insulating layer. The first anti-interference layer is a metal shielding net, the second anti-interference layer is a semiconductor paper, the weather-resistant layer is epoxy resin, and the insulating layer is a polyimide film, which not only improves the anti-interference performance of the shielding wire body, but also improves the weather resistance and insulation performance of the shielding wire body, and is beneficial to the use of the shielding wire body.

[0016] 2. The anti-interference magnetic shielding wire, through the protection mechanism, consists of a compressive layer, a waterproof layer, a fireproof layer, and a wear-resistant layer. The compressive layer is polypropylene, the waterproof layer is a polyurethane waterproof coating, the fireproof layer is polycarbonate, and the wear-resistant layer is nylon, which not only improves the compressive performance and wear resistance of the shielding wire body, but also improves the waterproof and fireproof properties, and is beneficial to the long-term use of the shielding wire body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional external view of the present utility model;

[0018] Figure 2 is a structural schematic diagram of the anti-interference mechanism of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the protection mechanism of the present utility model.

[0020] In the figure: 1 filling layer, 2 bracket, 3 protection mechanism, 301 compression-resistant layer, 302 waterproof layer, 303 fireproof layer, 304 wear-resistant layer, 4 anti-interference mechanism, 401 first anti-interference layer, 402 second anti-interference layer, 403 weather-resistant layer, 404 insulating layer, 5 shielded wire body, 6 protective layer. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 , an anti-interference magnetic shielded wire in this embodiment includes a bracket 2 and three shielded wire bodies 5 located inside the bracket 2. The bracket 2 is in a Y shape, which is used to separate the three shielded wire bodies 5 to prevent mutual influence and provide support at the same time. A protective layer 6 is fixed on the outer surface of the shielded wire body 5 to provide protection for the shielded wire body 5. A filling layer 1 is fixed inside the bracket 2, which is used to provide protection for the shielded wire body 5. An anti-interference mechanism 4 is arranged on the outer surface of the filling layer 1, and a protection mechanism 3 is arranged on the outer surface of the anti-interference mechanism 4. The anti-interference performance of the shielded wire body 5 is improved through the anti-interference mechanism 4, and the shielded wire body 5 is protected through the protection mechanism 3, so as to extend the service life of the shielded wire body 5.

[0023] Among them, the filling layer 1 is made of ABS resin. ABS plastic combines the common properties of the three components. Component A makes it resistant to chemical corrosion, heat-resistant, and has a certain surface hardness. Component B makes it have high elasticity and toughness. Component S makes it have the processing and molding characteristics of thermoplastic plastics and improves electrical properties. ABS plastic is a "tough, hard, and rigid" material with easy-to-obtain raw materials, good comprehensive performance, low price, and wide applications. ABS has excellent mechanical properties, good impact strength, and can be used at extremely low temperatures. It has good electrical insulation and is hardly affected by temperature, humidity, and frequency. The protective layer 6 is made of polyvinyl chloride, which has the advantages of flame retardancy (flame retardancy value above 40), high chemical resistance (resistant to concentrated hydrochloric acid, sulfuric acid with a concentration of 90%, nitric acid with a concentration of 60%, and sodium hydroxide with a concentration of 20%), good mechanical strength, and good electrical insulation.

[0024] Please refer to Figure 2, To improve the anti-interference performance, the anti-interference mechanism 4 in this embodiment includes a first anti-interference layer 401 fixed to the outer surface of the filling layer 1. A second anti-interference layer 402 is fixed to the outer surface of the first anti-interference layer 401. A weather-resistant layer 403 is fixed to the outer surface of the second anti-interference layer 402. An insulating layer 404 is fixed to the outer surface of the weather-resistant layer 403.

[0025] Among them, the first anti-interference layer 401 is a metal shielding net. The metal shielding net is a shielding material woven from metal wires and is usually used for electromagnetic shielding. It is characterized by good electrical conductivity, oxidation resistance, and plasticity, and can effectively resist the interference of external electromagnetic waves. The second anti-interference layer 402 is a semiconductor paper. The semiconductor material is a material between a conductor and an insulator. When an external electric field acts on this material, the material has the characteristics of variable resistivity and variable conductivity. Using this characteristic, using semiconductor paper as the shielding layer of the cable can effectively absorb electromagnetic waves, reduce the electric field strength on the cable surface, make the internal electric field distribution of the cable more uniform, thereby reducing cable loss and improving the transmission quality of the cable. The weather-resistant layer 403 is epoxy resin, which has excellent chemical resistance, especially alkali resistance, and strong film adhesion, especially to metals, and has good heat resistance and electrical insulation. The insulating layer 404 is a polyimide film, which has excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance, and chemical resistance, and can be used for a long time in the temperature range of -269°C to 280°C, and can reach a short-term high temperature of 400°C.

[0026] The anti-interference mechanism 4 in this embodiment is composed of a first anti-interference layer 401, a second anti-interference layer 402, a weather-resistant layer 403, and an insulating layer 404, which not only improves the anti-interference performance of the shielded wire body 5, but also improves the weather resistance and insulation performance of the shielded wire body 5, which is beneficial to the use of the shielded wire body 5.

[0027] Please refer to Figure 3 , To improve the protection of the shielded wire body 5, the protection mechanism 3 in this embodiment includes a compression-resistant layer 301 fixed to the outer surface of the insulating layer 404. A waterproof layer 302 is fixed to the outer surface of the compression-resistant layer 301. A fireproof layer 303 is fixed to the outer surface of the waterproof layer 302. A wear-resistant layer 304 is fixed to the outer surface of the fireproof layer 303.

[0028] Among them, the compression-resistant layer 301 is made of polypropylene, which is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic, having chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high-abrasion processing properties, etc. It has good compression resistance. The waterproof layer 302 is a polyurethane waterproof coating, which has the characteristics of high strength, large elongation rate, and good water resistance. The fireproof layer 303 is made of polycarbonate. Polycarbonate is colorless and transparent, heat-resistant, impact-resistant, and flame-retardant grade BI. It has good mechanical properties within the normal use temperature range and good fireproof performance. The wear-resistant layer 304 is made of nylon. The wear resistance of the nylon fabric benefits from its high strength and good elasticity. The strength of the nylon fabric is several times that of natural fibers and is the strongest among synthetic fibers. This makes it have excellent wear resistance and tear resistance. At the same time, the high elasticity of the nylon fabric enables it to quickly return to its original shape, further enhancing its wear resistance.

[0029] The protection mechanism 3 in this embodiment is composed of a compression-resistant layer 301, a waterproof layer 302, a fireproof layer 303, and a wear-resistant layer 304. It not only improves the compression resistance and wear resistance of the shielded wire body 5, but also improves the waterproofness and fireproofness, which is beneficial to the long-term use of the shielded wire body 5.

[0030] The working principle of the above embodiment is as follows:

[0031] (1) The anti-interference mechanism 4 is composed of a first anti-interference layer 401, a second anti-interference layer 402, a weather-resistant layer 403, and an insulating layer 404. The first anti-interference layer 401 is a metal shielding net, which has good electrical conductivity, oxidation resistance, and plasticity, and can effectively resist the interference of external electromagnetic waves. The second anti-interference layer 402 is a semiconductor paper, which can effectively absorb electromagnetic waves, reduce the electric field strength on the surface of the cable, and make the internal electric field distribution of the cable more uniform, thereby reducing cable loss and improving the transmission quality of the cable. The weather-resistant layer 403 is made of epoxy resin, which has excellent chemical resistance, especially alkali resistance, and strong paint film adhesion, especially to metals, and has good heat resistance and electrical insulation. The insulating layer 404 is a polyimide film, which has excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance, and medium resistance. It not only improves the anti-interference performance of the shielded wire body 5, but also improves the weather resistance and insulation performance of the shielded wire body 5, which is beneficial to the use of the shielded wire body 5.

[0032] (2) The protection mechanism 3 is composed of a compressive layer 301, a waterproof layer 302, a fireproof layer 303, and a wear-resistant layer 304. The compressive layer 301 is made of polypropylene, which has chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high-wear processing properties, etc., and has good compressive performance. The waterproof layer 302 is a polyurethane waterproof coating, which has the characteristics of high strength, large elongation rate, and good water resistance. The fireproof layer 303 is made of polycarbonate, which is colorless and transparent, heat-resistant, impact-resistant, and flame-retardant B1 level. The wear-resistant layer 304 is made of nylon. The wear resistance of the nylon fabric benefits from its high strength and good elasticity. The strength of the nylon fabric is several times that of natural fibers and is the strongest among synthetic fibers, which makes it have excellent wear resistance and tear resistance. This not only improves the compressive and wear resistance of the shielded wire body 5, but also improves the waterproof and fireproof properties, which is beneficial to the long-term use of the shielded wire body 5.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-interference magnetic shielding wire, comprising a bracket (2) and three shielding wire bodies (5) located inside the bracket (2), characterized in that: A protective layer (6) is fixed on the outer surface of the shielded wire body (5), a filling layer (1) is fixed inside the bracket (2), an anti-interference mechanism (4) is provided on the outer surface of the filling layer (1), and a protective mechanism (3) is provided on the outer surface of the anti-interference mechanism (4); The anti-interference mechanism (4) comprises a first anti-interference layer (401) fixed to the outer surface of the filling layer (1), a second anti-interference layer (402) fixed to the outer surface of the first anti-interference layer (401), a weather-resistant layer (403) fixed to the outer surface of the second anti-interference layer (402), and an insulating layer (404) fixed to the outer surface of the weather-resistant layer (403).

2. The anti-interference magnetic shielding wire according to claim 1, characterized in that: The first anti-interference layer (401) is a metal shielding mesh, and the second anti-interference layer (402) is semiconductor paper.

3. The anti-interference magnetic shielding wire according to claim 1, characterized in that: The weather-resistant layer (403) is epoxy resin, and the insulating layer (404) is a polyimide film.

4. The anti-interference magnetic shielding wire according to claim 1, characterized in that: The filling layer (1) is made of ABS resin, and the protective layer (6) is made of polyvinyl chloride.

5. The anti-interference magnetic shielding wire according to claim 1, characterized in that: The protection mechanism (3) comprises a pressure-resistant layer (301) fixed to the outer surface of the insulating layer (404), a waterproof layer (302) fixed to the outer surface of the pressure-resistant layer (301), a fireproof layer (303) fixed to the outer surface of the waterproof layer (302), and a wear-resistant layer (304) fixed to the outer surface of the fireproof layer (303).

6. The anti-interference magnetic shielding wire according to claim 5, characterized in that: The pressure-resistant layer (301) is polypropylene, and the waterproof layer (302) is polyurethane waterproof coating.

7. The anti-interference magnetic shielding wire according to claim 5, characterized in that: The fireproof layer (303) is made of polycarbonate, and the wear-resistant layer (304) is made of nylon.

Images