Display video transmission line

Abstract

The utility model relates to the technical field of cables, in particular to a display video transmission line. A plurality of signal groups and a plurality of electronic wires are wound on the periphery of a filling strip located in the center, then a shielding layer, a braid layer and an outer coating layer are sequentially coated from inside to outside, the physical performance of the wire is improved through the filling strip arranged in the center of the wire, each signal group is formed by twisting a plurality of signal core wires and ground wires in a pair mode, and therefore the physical performance of the wire is improved. An aluminum foil layer and a polyester belt layer are wrapped on the periphery of the signal core wire and the ground wire, the twisted-pair direction of the signal core wire and the ground wire is the S direction, the wrapping direction of the aluminum foil layer and the polyester belt layer is the Z direction, the signal core wire is twisted in the S direction, and the aluminum foil layer and the polyester belt layer are wrapped in the Z direction, so that the overall flexibility requirement of the wire is met, and meanwhile, the flexibility of the wire is improved. The tensile strength of the core wire is improved, and the attenuation high-frequency value of the wire is better during long-distance use while the performance test requirement of the wire is met.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to a display video transmission line. Background Art

[0002] The DisplayPort video transmission line made by the prior art usually has a group of signal lines, which are then wrapped with a shielding layer and an outer layer. Although the transmission line can meet the performance test for short-distance use, the transmission line has a single structure and cannot meet the performance test and physical performance test for long-distance use, and cannot meet the requirements of long-distance processing and performance test of wires. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a display video transmission cable, including a filling strip located in the center, several groups of signal groups surrounding the filling strip, several electronic wires, and a shielding layer, a braided layer and an outer layer sequentially covered from the inside to the outside, the signal group is formed by twisting several signal core wires and ground wires, and an aluminum foil layer and a polyester tape layer are wrapped around the outer periphery of the signal core wire and the ground wire; the twisting direction of the signal core wire and the ground wire is the S direction, and the wrapping direction of the aluminum foil layer and the polyester tape layer is the Z direction.

[0004] Preferably, the signal core wire comprises a central conductor and an insulating layer, and the insulating layer consists of a foaming layer and an outer layer.

[0005] Preferably, the shielding layer is an aluminum foil wrapped around the filling strip, the signal group and the outer periphery of the electronic wire, and the wrapping direction is S direction.

[0006] Preferably, the filling strips, signal groups and electronic wires are twisted into a cable, and the twisting direction is S direction.

[0007] Preferably, the outer layer is made of halogen-free TPE material.

[0008] From the above, it can be seen that the application of the present application can obtain the following beneficial effects: by wrapping several groups of signal groups and several electronic wires around the periphery of the filling strip located in the center, and then sequentially coating them with a shielding layer, a braided layer and an outer layer from the inside out, and by setting a filling strip in the center of the wire, the physical properties of the wire are improved, the signal group is formed by twisting several signal core wires and a ground wire, and an aluminum foil layer and a polyester tape layer are wrapped around the periphery of the signal core wire and the ground wire, wherein the twisting direction of the signal core wire and the ground wire is the S direction, and the wrapping direction of the aluminum foil layer and the polyester tape layer is the Z direction, by arranging the signal core wire to be twisted in the S direction, and the aluminum foil layer and the polyester tape layer are wrapped along the Z direction, while meeting the overall softness requirement of the wire, the tensile strength of the core wire is improved, and while meeting the wire performance test requirements, the attenuation high-frequency value of the wire is better when used over long distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the description of the embodiments of the present application or the prior art are briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0010] Figure 1 This is a structural diagram of the display video transmission line according to an embodiment of the present application. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0012] Example

[0013] In order to solve the above technical problems, this embodiment provides a display video transmission line, such as Figure 1 As shown, it includes a filling strip 10 located in the center, several groups of signal groups 20 surrounding the filling strip 10, several electronic wires 30, and a shielding layer 40, a braided layer 50 and an outer layer 60 sequentially coated from the inside to the outside. The filling strip 10 arranged in the center of the wire improves the physical properties of the wire. The signal group 20 is formed by twisting several signal core wires 21 and ground wires 22. An aluminum foil layer 23 and a polyester tape layer 24 are wrapped around the periphery of the signal core wire 21 and the ground wire 22. The twisting direction of the signal core wire 21 and the ground wire 22 is S direction, and the wrapping direction of the aluminum foil layer 23 and the polyester tape layer 24 is Z direction. By arranging the signal core wire 21 to be twisted in the S direction and the aluminum foil layer 23 and the polyester tape layer 24 to be wrapped along the Z direction, the overall softness requirement of the wire is met while the tensile strength of the core wire is improved. Moreover, while meeting the wire performance test requirements, the attenuation high-frequency value of the wire is better when used over a long distance.

[0014] The signal core wire 21 includes a central conductor and an insulating layer, and the insulating layer is composed of a foam layer and an outer layer, wherein the outer layer is a solid layer. Compared with the structure of the existing transmission line using a solid layer to cover the conductor, this solution covers the conductor with a foam layer, and then wraps the foam layer with a solid outer layer. The double-layer structure design of the foam layer and the skin layer can obtain a lower relative dielectric constant, achieving lightweight while making the wire have lower attenuation.

[0015] In the above scheme, when the filling strip 10, the signal group 20 and the electronic wire 30 are twisted into a cable, the twisting direction is S. The shielding layer 40 is an aluminum foil wrapped around the outer periphery of the filling strip 10, the signal group 20 and the electronic wire 30, and the wrapping direction is S. By designing the twisting direction and wrapping direction of the cable, the overall softness requirement of the wire can be met while meeting the wire performance test requirements.

[0016] Furthermore, the outer layer 60 is made of halogen-free TPE material. The outer layer 60 is made of halogen-free material and UL printing is performed with halogen-free printing ink, which can meet the halogen-free and physical performance requirements of the wire material and solve the problem that the halogen-free material printing is not resistant to wiping.

[0017] 2Test result Test result Test environment temperature and humidity Temp. / Hum:24.5℃ / 53.2%

[0018]

[0019] Table 1

[0020] Table 1 is the physical performance test report of the transmission line of this scheme.

[0021] To summarize, the present application scheme surrounds several groups of signal groups and several electronic wires around the periphery of the filling strip located in the center, and then sequentially covers them with a shielding layer, a braided layer and an outer layer from the inside out. The filling strip is arranged in the center of the wire to improve the physical properties of the wire. The signal group is formed by twisting several signal core wires and a ground wire, and an aluminum foil layer and a polyester tape layer are wrapped around the periphery of the signal core wire and the ground wire, wherein the twisting direction of the signal core wire and the ground wire is the S direction, and the wrapping direction of the aluminum foil layer and the polyester tape layer is the Z direction. By arranging the signal core wire to be twisted in the S direction and the aluminum foil layer and the polyester tape layer to be wrapped along the Z direction, the overall softness requirement of the wire is met while the tensile strength of the core wire is improved. Moreover, while meeting the wire performance test requirements, the attenuation high-frequency value of the wire is better when used over long distances.

[0022] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A display video transmission line, characterized in that: The invention comprises a filling strip (10) located in the center, a plurality of signal groups (20) surrounding the filling strip (10), a plurality of electronic wires (30), and a shielding layer (40), a braided layer (50) and an outer layer (60) sequentially coated from the inside to the outside, wherein the signal group (20) is formed by twisting a plurality of signal core wires (21) and a ground wire (22), and an aluminum foil layer (23) and a polyester tape layer (24) are wrapped around the outer periphery of the signal core wire (21) and the ground wire (22); the twisting direction of the signal core wire (21) and the ground wire (22) is the S direction, and the wrapping direction of the aluminum foil layer (23) and the polyester tape layer (24) is the Z direction.

2. The display video transmission line according to claim 1, characterized in that: The signal core wire (21) comprises a central conductor and an insulating layer, wherein the insulating layer consists of a foaming layer and an outer layer.

3. The display video transmission line according to claim 1, characterized in that: The shielding layer (40) is an aluminum foil wrapped around the outer periphery of the filling strip (10), the signal group (20) and the electronic wire (30), and the wrapping direction is the S direction.

4. The display video transmission line according to claim 3, characterized in that: The filling strip (10), the signal group (20) and the electronic wire (30) are twisted into a cable, and the twisting direction is S direction.

5. The display video transmission line according to claim 1, characterized in that: The outer layer (60) is made of halogen-free TPE material.

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