Electromagnetic shielding data transmission line

Abstract

The utility model discloses an electromagnetic shielding data transmission line, which comprises a first insulating base film and a second insulating base film which are overlapped, a plurality of signal transmission metal wires which are arranged between the first insulating base film and the second insulating base film at intervals, and metal leads which are respectively arranged at two sides of the signal transmission metal wires in parallel at intervals, a first shielding layer is arranged on the surface of the side, opposite to the signal transmission metal wires and the metal wires, of the first insulating base film, a second shielding layer is arranged on the surface of the side, opposite to the signal transmission metal wires and the metal wires, of the second insulating base film, and a first insulating film is arranged between the first insulating base film and the first shielding layer. And a second insulating film is arranged between the second insulating base film and the second shielding layer. According to the electromagnetic shielding data transmission line, on the basis of reducing signal attenuation and realizing stable signal transmission, the overall bending radius is reduced, the requirement on the installation space is reduced, and the operation convenience of personnel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission cables, in particular to an electromagnetic shielding data transmission line. Background Art

[0002] Coaxial cable is a cable mainly used for signal transmission. Its application scenarios include cable TV transmission, long-distance telephone transmission, short-distance connection between computer systems and local area networks. It is generally composed of four layers of materials, from the outside to the inside, namely the sheath, mesh conductor, insulation layer and center conductor.

[0003] Existing coaxial cables have multiple center conductors inside, and the more lines that transmit signals, the more center conductors there are. However, the increase in center conductors will increase the overall rigidity of the coaxial cable, which will increase the bending radius of the coaxial cable. When wiring work is performed in some narrow spaces, it is difficult for personnel to bend the coaxial cable and insert it into the corresponding interface in the narrow space, which makes it inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic shielding data transmission line, which, on the basis of reducing signal attenuation and realizing stable signal transmission, is conducive to reducing the overall bending radius, reducing the requirements for installation space, and improving the convenience of personnel operation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an electromagnetic shielding data transmission line, comprising: a first insulating base film and a second insulating base film stacked together, a plurality of signal transmission metal wires are arranged at intervals between the first insulating base film and the second insulating base film, metal wires are arranged in parallel and at intervals on both sides of the signal transmission metal wires, a first shielding layer is arranged on the surface of the first insulating base film on the side opposite to the signal transmission metal wire and the metal wire, and a second shielding layer is arranged on the surface of the second insulating base film on the side opposite to the signal transmission metal wire and the metal wire.

[0006] The further improved scheme in the above technical scheme is as follows:

[0007] 1. In the above scheme, a first insulating film is provided between the first insulating base film and the first shielding layer, and a second insulating film is provided between the second insulating base film and the second shielding layer.

[0008] 2. In the above solution, the first insulating film and the second insulating film are PET film, PE film, PVC film, PI film or PBT film.

[0009] 3. In the above solution, the first shielding layer and the second shielding layer are metal shielding films or wire shielding mesh layers.

[0010] 4. In the above scheme, the first shielding layer and the second shielding layer are both composed of stacked metal shielding films and wire shielding mesh layers.

[0011] 5. In the above solution, the metal shielding film is located between the insulating base film and the wire shielding mesh layer.

[0012] 6. In the above solution, the first insulating base film and the second insulating base film are PET film, PE film, PVC film, PI film or PBT film.

[0013] 7. In the above solution, an adhesive layer is provided between the first insulating base film and the second insulating base film.

[0014] 8. In the above scheme, the signal transmission metal wires are arranged at equal intervals.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The utility model discloses an electromagnetic shielding data transmission line, wherein a plurality of signal transmission metal wires are arranged at intervals between the stacked first insulating base film and the second insulating base film, and metal conductors are arranged at intervals in parallel on both sides of the signal transmission metal wires, a first conductor shielding mesh layer is arranged on the surface of the first insulating base film on the side opposite to the signal transmission metal wire and the metal conductor, and a second conductor shielding mesh layer is arranged on the surface of the second insulating base film on the side opposite to the signal transmission metal wire and the metal conductor, while a plurality of signal transmission metal wires are arranged at intervals for signal transmission, the first shielding layer and the second shielding layer on the upper and lower sides and the metal conductors on both sides of each signal transmission metal wire jointly shield and protect the signal transmission metal wire, which is beneficial to reducing the overall bending radius, reducing the requirement for installation space, and improving the convenience of personnel operation on the basis of reducing signal attenuation and realizing stable signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is a three-dimensional diagram of the overall structure of the electromagnetic shielding data transmission line of the utility model;

[0018] Attached Figure 2 It is a schematic cross-sectional view taken along line A-A' of the first embodiment of the utility model;

[0019] Attached Figure 3 It is a schematic cross-sectional view taken along line A-A' of a second embodiment of the utility model;

[0020] Attached Figure 4 It is a schematic cross-sectional view taken along line A-A' of a third embodiment of the present invention.

[0021] In the above figures: 1, signal transmission metal wire; 2, metal wire; 3, first insulating base film; 4, second insulating base film; 51, first insulating film; 52, second insulating film; 61, first shielding layer; 62, second shielding layer; 7, wire shielding mesh layer; 8, adhesive layer; 9, metal shielding film. DETAILED DESCRIPTION

[0022] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0023] Embodiment 1: An electromagnetically shielded data transmission line, comprising: a first insulating base film 3 and a second insulating base film 4 stacked together, with a plurality of signal transmission metal wires 1 arranged at intervals between the first insulating base film 3 and the second insulating base film 4;

[0024] Metal wires 2 are arranged in parallel and at intervals on both sides of the signal transmission metal wire 1, a first shielding layer 61 is arranged on the surface of the first insulating base film 3 opposite to the signal transmission metal wire 1 and the metal wire 2, and a second shielding layer 62 is arranged on the surface of the second insulating base film 4 opposite to the signal transmission metal wire 1 and the metal wire 2.

[0025] A first insulating film 51 is disposed between the first insulating base film 3 and the first shielding layer 61 , and a second insulating film 52 is disposed between the second insulating base film 4 and the second shielding layer 62 ; the first insulating film 51 is a PET film, and the second insulating film 52 is a PE film.

[0026] The first insulating base film 3 and the second insulating base film 4 are PET films.

[0027] An adhesive layer 8 is disposed between the first insulating base film 3 and the second insulating base film 4 .

[0028] The signal transmission metal wires 1 are arranged at equal intervals.

[0029] The diameter of the signal transmission metal wire 1 is 20 μm.

[0030] The diameter of the metal wire 2 is 20 μm.

[0031] Embodiment 2: An electromagnetically shielded data transmission line, comprising: a first insulating base film 3 and a second insulating base film 4 stacked together, with a plurality of signal transmission metal wires 1 arranged at intervals between the first insulating base film 3 and the second insulating base film 4;

[0032] While a number of signal transmission metal wires are arranged at intervals for signal transmission, the first shielding layer and the second shielding layer on the upper and lower sides and the metal conductors on both sides of each signal transmission metal wire jointly shield and protect the signal transmission metal wire, which is beneficial to reduce the overall bending radius, reduce the requirements for installation space, and improve the convenience of personnel operation on the basis of reducing signal attenuation and achieving stable signal transmission;

[0033] Metal wires 2 are arranged in parallel and at intervals on both sides of the signal transmission metal wire 1, a first shielding layer 61 is arranged on the surface of the first insulating base film 3 opposite to the signal transmission metal wire 1 and the metal wire 2, and a second shielding layer 62 is arranged on the surface of the second insulating base film 4 opposite to the signal transmission metal wire 1 and the metal wire 2.

[0034] The first shielding layer 61 is a metal shielding film 9 , and the second shielding layer 62 is a wire shielding mesh layer 7 .

[0035] The first insulating base film 3 is a PE film, and the second insulating base film 4 is a PVC film.

[0036] An adhesive layer 8 is disposed between the first insulating base film 3 and the second insulating base film 4 .

[0037] The diameter of the signal transmission metal wire 1 is 150 μm.

[0038] The diameter of the metal wire 2 is 150 μm.

[0039] Embodiment 3: An electromagnetically shielded data transmission line, comprising: a first insulating base film 3 and a second insulating base film 4 stacked together, a plurality of signal transmission metal wires 1 spaced apart between the first insulating base film 3 and the second insulating base film 4, metal conductors 2 spaced apart and arranged in parallel on both sides of the signal transmission metal wire 1, a first shielding layer 61 is arranged on the surface of the first insulating base film 3 opposite to the signal transmission metal wire 1 and the metal conductor 2, and a second shielding layer 62 is arranged on the surface of the second insulating base film 4 opposite to the signal transmission metal wire 1 and the metal conductor 2.

[0040] The first shielding layer 61 and the second shielding layer 62 are both composed of a stacked metal shielding film 9 and a wire shielding mesh layer 7 ; the metal shielding film 9 is located between the insulating base film and the wire shielding mesh layer 7 .

[0041] The first insulating base film 3 is a PI film, and the second insulating base film 4 is a PBT film.

[0042] The signal transmission metal wires 1 are arranged at equal intervals.

[0043] As further described below, the first insulating base film 3, the second insulating base film 4, the first insulating film 51, and the second insulating film 52 can each be made of any one of PET film, PBT film, PVC film, PE film, or PI film.

[0044] When the above-mentioned electromagnetic shielding data transmission line is used, a number of signal transmission metal wires are arranged at intervals for signal transmission. At the same time, the first shielding layer and the second shielding layer on the upper and lower sides and the metal conductors on both sides of each signal transmission metal wire jointly shield the signal transmission metal wire. On the basis of reducing signal attenuation and achieving stable signal transmission, it is beneficial to reduce the overall bending radius, reduce the requirements for installation space, and improve the convenience of personnel operation.

[0045] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An electromagnetically shielded data transmission line, characterized in that: include: A first insulating base film (3) and a second insulating base film (4) are stacked, a plurality of signal transmission metal wires (1) are arranged at intervals between the first insulating base film (3) and the second insulating base film (4), metal conductors (2) are arranged in parallel and at intervals on both sides of the signal transmission metal wire (1), a first shielding layer (61) is arranged on the surface of the first insulating base film (3) on the side opposite to the signal transmission metal wire (1) and the metal conductor (2), and a second shielding layer (62) is arranged on the surface of the second insulating base film (4) on the side opposite to the signal transmission metal wire (1) and the metal conductor (2).

2. The electromagnetic shielding data transmission line according to claim 1, characterized in that: A first insulating film (51) is provided between the first insulating base film (3) and the first shielding layer (61), and a second insulating film (52) is provided between the second insulating base film (4) and the second shielding layer (62).

3. The electromagnetic shielding data transmission line according to claim 2, characterized in that: The first insulating film (51) and the second insulating film (52) are PET films, PE films, PVC films, PI films or PBT films.

4. The electromagnetic shielding data transmission line according to claim 1 or 2, characterized in that: The first shielding layer (61) and the second shielding layer (62) are metal shielding films (9) or wire shielding mesh layers (7).

5. The electromagnetic shielding data transmission line according to claim 1 or 2, characterized in that: The first shielding layer (61) and the second shielding layer (62) are both composed of a stacked metal shielding film (9) and a wire shielding mesh layer (7).

6. The electromagnetic shielding data transmission line according to claim 5, characterized in that: The metal shielding film (9) is located between the insulating base film and the wire shielding mesh layer (7).

7. The electromagnetic shielding data transmission line according to claim 1, characterized in that: The first insulating base film (3) and the second insulating base film (4) are PET films, PE films, PVC films, PI films or PBT films.

8. The electromagnetic shielding data transmission line according to claim 1, characterized in that: An adhesive layer (8) is provided between the first insulating base film (3) and the second insulating base film (4).

9. The electromagnetic shielding data transmission line according to claim 1, characterized in that: The signal transmission metal wires (1) are arranged at equal intervals.

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