Electromagnetically shielded data transmission cable

Abstract

An electromagnetically shielded data transmission cable, comprising: a first insulating base film and a second insulating base film which are stacked. A plurality of signal transmission metal lines are arranged at intervals between the first insulating base film and the second insulating base film; metal wires are provided on the two sides of each signal transmission metal line in parallel in a spaced manner; a first shielding layer is provided on the surface of the side of the first insulating base film facing away from the signal transmission metal lines and the metal wires; a second shielding layer is provided on the surface of the side of the second insulating base film facing away from the signal transmission metal lines and the metal wires; a first insulating film is provided between the first insulating base film and the first shielding layer; a second insulating film is provided between the second insulating base film and the second shielding layer. The electromagnetically shielded data transmission cable reduces signal attenuation, achieves stable signal transmission, reduces the overall bending radius, relaxes requirements for the installation space, and improving operation convenience for personnel.

Description

Electromagnetic shielded data transmission line Technical Field

[0001] This utility model relates to the field of transmission cable technology, and in particular to an electromagnetically shielded data transmission line. Background Technology

[0002] Coaxial cable is a type of cable primarily used for signal transmission. Its applications include cable television transmission, long-distance telephone transmission, short-distance connections between computer systems, and local area networks. It is generally composed of four layers of material, from the outside to the inside: sheath, mesh conductor, insulation layer, and center conductor.

[0003] Existing coaxial cables have multiple center conductors inside, and the more signal transmission lines there are, the more center conductors there will be. 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 doing wiring work 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 is inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an electromagnetically shielded data transmission line that, while reducing signal attenuation and achieving stable signal transmission, also helps to reduce the overall bending radius, lowers the requirements for installation space, and improves the ease of operation for personnel.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an electromagnetic shielded data transmission line, comprising: a first insulating base film and a second insulating base film stacked together, a plurality of signal transmission metal lines arranged at intervals between the first insulating base film and the second insulating base film, and metal conductors arranged parallel and at intervals on both sides of the signal transmission metal lines, a first shielding layer being provided on the surface of the first insulating base film opposite to the signal transmission metal lines and metal conductors, and a second shielding layer being provided on the surface of the second insulating base film opposite to the signal transmission metal lines and metal conductors.

[0006] The following are further improvements to the above technical solution:

[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 scheme, 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 scheme, the first shielding layer and the second shielding layer are metal shielding films or wire shielding mesh layers.

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

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

[0012] 6. In the above scheme, 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 scheme, 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 lines are arranged at equal intervals.

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

[0016] This utility model relates to an electromagnetic shielded data transmission line. A plurality of signal transmission metal wires are arranged at intervals between the stacked first and second insulating base films. Parallel metal conductors are arranged on both sides of the signal transmission metal wires. A first conductor shielding mesh layer is provided on the surface of the first insulating base film opposite to the signal transmission metal wires and metal conductors, and a second conductor shielding mesh layer is provided on the surface of the second insulating base film opposite to the signal transmission metal wires and metal conductors. While the plurality of signal transmission metal wires are arranged at intervals for signal transmission, the first and second shielding layers on the upper and lower sides, together with the metal conductors on both sides of each signal transmission metal wire, jointly shield and protect the signal transmission metal wires. This reduces signal attenuation, achieves stable signal transmission, helps to reduce the overall bending radius, lowers the installation space requirements, and improves the convenience of personnel operation. Attached Figure Description

[0017] Figure 1 is a three-dimensional view of the overall structure of the electromagnetic shielded data transmission line of this utility model;

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

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

[0020] Figure 4 is a cross-sectional view along line A-A' of the third embodiment of this utility model.

[0021] In the above figures: 1. Signal transmission metal line; 2. Metal conductor; 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. Conductor shielding mesh layer; 8. Adhesive layer; 9. Metal shielding film. Detailed Implementation

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

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

[0024] Metal wires 2 are arranged parallel to each other on both sides of the signal transmission metal line 1. A first shielding layer 61 is provided on the surface of the first insulating base film 3 opposite to the signal transmission metal line 1 and the metal wires 2. A second shielding layer 62 is provided on the surface of the second insulating base film 4 opposite to the signal transmission metal line 1 and the metal wires 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 mentioned above are PET films.

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

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

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

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

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

[0032] While several signal transmission metal wires are arranged at intervals to transmit signals, the first and second shielding layers on the upper and lower sides, together with the metal conductors on both sides of each signal transmission metal wire, provide shielding protection for the signal transmission metal wires. This reduces signal attenuation, achieves stable signal transmission, reduces the overall bending radius, lowers the requirements for installation space, and improves the convenience of personnel operation.

[0033] Metal wires 2 are arranged parallel to each other on both sides of the signal transmission metal line 1. A first shielding layer 61 is provided on the surface of the first insulating base film 3 opposite to the signal transmission metal line 1 and the metal wires 2. A second shielding layer 62 is provided on the surface of the second insulating base film 4 opposite to the signal transmission metal line 1 and the metal wires 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 provided between the first insulating base film 3 and the second insulating base film 4.

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

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

[0039] Example 3: An electromagnetic shielded data transmission line includes: a first insulating base film 3 and a second insulating base film 4 stacked together; a plurality of signal transmission metal lines 1 arranged at intervals between the first insulating base film 3 and the second insulating base film 4; metal wires 2 arranged parallel to each other on both sides of the signal transmission metal lines 1; a first shielding layer 61 is provided on the surface of the first insulating base film 3 opposite to the signal transmission metal lines 1 and the metal wires 2; and a second shielding layer 62 is provided on the surface of the second insulating base film 4 opposite to the signal transmission metal lines 1 and the metal wires 2.

[0040] The first shielding layer 61 and the second shielding layer 62 are both composed of a metal shielding film 9 and a wire shielding mesh layer 7 stacked together; 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 aforementioned signal transmission metal lines 1 are arranged at equal intervals.

[0043] Further explanation is as follows: 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 selected from any one of PET film, PBT film, PVC film, PE film, or PI film.

[0044] When using the above-mentioned electromagnetic shielded data transmission line, while several signal transmission metal wires are arranged at intervals for signal transmission, the first and second shielding layers on the upper and lower sides, together with the metal conductors on both sides of each signal transmission metal wire, jointly shield and protect the signal transmission metal wire. This reduces signal attenuation, achieves stable signal transmission, helps to reduce the overall bending radius, reduces the requirements for installation space, and improves the convenience of personnel operation.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electromagnetically shielded data transmission line, characterized in that: include: The first insulating base film (3) and the second insulating base film (4) are stacked together. A number of signal transmission metal lines (1) are arranged at intervals between the first insulating base film (3) and the second insulating base film (4). Metal wires (2) are arranged parallel to each other on both sides of the signal transmission metal lines (1). A first shielding layer (61) is provided on the surface of the first insulating base film (3) opposite to the signal transmission metal lines (1) and the metal wires (2). A second shielding layer (62) is provided on the surface of the second insulating base film (4) opposite to the signal transmission metal lines (1) and the metal wires (2).

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

4. The electromagnetic shielded 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 shielded 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 metal shielding film (9) and a wire shielding mesh layer (7) stacked together.

6. The electromagnetic shielded 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 shielded 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 film, PE film, PVC film, PI film or PBT film.

8. The electromagnetic shielded 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 shielded 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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