CN218241342U - Data transmission line - Google Patents
Data transmission line Download PDFInfo
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- CN218241342U CN218241342U CN202222455789.2U CN202222455789U CN218241342U CN 218241342 U CN218241342 U CN 218241342U CN 202222455789 U CN202222455789 U CN 202222455789U CN 218241342 U CN218241342 U CN 218241342U
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- data transmission
- transmission line
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- cores
- polyester fiber
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Abstract
The utility model belongs to the technical field of cables, and discloses a data transmission line, which comprises at least one wire core, wherein the wire core comprises two signal wires, a shielding layer and a middle tegument, and the two signal wires are arranged in parallel; the shielding layer is coated on the outer sides of the two signal wires; and a middle layer is coated on the outer side of the shielding layer, and is made of an FEP film. The utility model provides a data transmission line for data transmission line is softer, can prevent that data transmission line from appearing bending or cutting off loose problem.
Description
Technical Field
The utility model belongs to the technical field of the cable, especially, relate to a data transmission line.
Background
The data transmission line of the streaming media player supports a 4K television and an HDR television and synchronously configures an HDMI interface. The signal is transmitted through the flat superfine high-definition data transmission line, the line can not be dropped in the playing process, the displayed picture is clearer and vivid, the color is richer, the audio-visual effect is better, and the picture delay and pause phenomenon are reduced.
At present, the data transmission line adopts a wrapping process of aluminum foil or PTFE material, and the problem of bending or cutting loose is easy to occur.
Therefore, a data transmission line is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a data transmission line for the data transmission line who exists among the solution prior art easily appears bending or cuts off loose technical problem.
To achieve the purpose, the utility model adopts the following technical proposal:
a data transmission line comprising at least one core, the core comprising:
two signal lines arranged in parallel with each other;
the shielding layer is coated on the outer sides of the two signal wires;
and the middle layer is coated on the outer side of the shielding layer and is made of an FEP film.
As a preferable technical solution of the above data transmission line, the signal line includes a conductive portion and an insulating layer coated outside the conductive portion, and the insulating layer is made of PFA material.
As a preferable technical solution of the above data transmission line, the outer diameter of the insulating layer is 0.31 ± 0.03mm.
As a preferable technical scheme of the data transmission line, the conducting part is formed by twisting seven tinned copper wires, and the twisting distance of the conducting part is 1.5mm-2.0mm.
As a preferable technical scheme of the data transmission line, the diameter of the tinned copper wire is 0.04 +/-0.003 mm.
As a preferable technical scheme of the data transmission line, the shielding layer is formed by weaving tinned copper wires, and the weaving pitch is 6.7 +/-0.3 mm.
As a preferred technical solution of the above data transmission line, the data transmission line further includes a sheath layer, and the sheath layer is wrapped around the outer sides of all the wire cores.
As a preferable technical solution of the above data transmission line, the sheath layer is made of TPE material.
As a preferable technical solution of the above data transmission line, the data transmission line includes seven of the cores, and the seven cores are parallel to each other and are sequentially spaced and distributed in a row.
As a preferable technical solution of the above data transmission line, the data transmission line further includes two polyester fiber ropes, seven of the cores are located between the two polyester fiber ropes, and the polyester fiber ropes and the cores are parallel to each other.
The utility model has the advantages that:
the utility model provides a data transmission line, its sinle silk includes two signal lines, shielding layer and middle tegillum, and the shielding layer cladding is in the outside of two signal lines, and middle tegillum cladding is in the outside of shielding layer, and middle tegillum is FEP membrane. The FEP film enables the wire to be softer, and can prevent the data transmission line from being bent or cut loosely.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a data transmission line provided by an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a wire core provided by an embodiment of the present invention;
fig. 3 is a test picture of differential characteristic impedance of a data transmission line according to an embodiment of the present invention:
fig. 4 is a test picture of a signal line transmission time provided by an embodiment of the present invention;
fig. 5 is a test picture of another signal line transmission time provided by the embodiment of the present invention;
fig. 6 is a test picture of the attenuation of the data transmission line according to the embodiment of the present invention.
In the figure:
1. a wire core; 2. a sheath layer; 3. a polyester fiber rope;
11. a signal line; 12. a shielding layer; 13. a middle tegument layer;
111. a conduction part; 112. an insulating layer.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specifically stated or limited, the terms "connected," "connected," and "mounted" are to be construed broadly and may include, for example, mounted or demounted connections, mechanical or electrical connections, direct or indirect connections through an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a data transmission line, which includes a sheath layer 2 and at least one core 1, wherein the sheath layer 2 covers the outside of all cores 1, the cores 1 are used for transmitting data signals, and the sheath layer 2 covers the outside of the cores 1, connects all cores 1 into a whole, and protects the cores 1.
Specifically, as shown in fig. 2, the wire core 1 includes two signal wires 11, a shielding layer 12 and a middle-layer 13, where the two signal wires 11 are arranged in parallel; the shielding layer 12 covers the outer sides of the two signal lines 11; the middle-layer 13 covers the outer side of the shield layer 12, and the middle-layer 13 is an FEP film.
In this embodiment, the middle layer is an FEP film, and the FEP film is a film made of FEP (fluorinated ethylene propylene copolymer) as a material through an FEP ultra-thin film coating process. The FEP film makes the wire more flexible, can prevent that data transmission line from appearing bending or cutting loose problem. The specific implementation steps of the FEP ultrathin coating process can refer to the prior art, and are not described herein again.
Specifically, the signal line 11 includes a conductive portion 111 and an insulating layer 112 covering the conductive portion 111, and the insulating layer 112 is made of PFA material. The insulating layer 112 formed of PFA (soluble polytetrafluoroethylene) material makes the signal line 11 process solder more temperature resistant.
More specifically, the outer diameter of the insulating layer 112 is 0.31 ± 0.03mm.
Specifically, the conducting part 111 is formed by twisting seven tinned copper wires, and the twisting pitch of the conducting part 111 is 1.5mm-2.0mm. One of them tinned wire is located the center, and remaining six distribute in all around, so set up, seven tinned wires form circular structure, are favorable to improving data transmission line's compliance. In the present embodiment, the diameter of the tinned copper wire forming the conductive portion 111 is 0.04 ± 0.003mm.
Specifically, the shielding layer 12 is formed by weaving tinned copper wires, and the weaving pitch is 6.7 +/-0.3 mm. The diameter of the tinned copper wire of the braided shield layer 12 is 0.03 ± 0.003mm. By such arrangement, the flexibility of the shielding layer 12 is ensured, and the requirement of coverage rate is met.
Specifically, as shown in fig. 1, the middle-tegument 13 has an elliptical ring-like structure, and the dimension M × L of the cross section of the middle-tegument 13 is 0.58mm × 0.88mm.
Specifically, the sheath layer 2 is made of TPE material. The TPE (thermoplastic elastomer) material has the excellent performances of high elasticity, aging resistance and oil resistance, and has the characteristics of convenient processing and wide processing mode of common plastics.
In the present embodiment, the data transmission line includes seven cores 1, and the seven cores 1 are parallel to each other and are sequentially spaced and distributed in a row. The distance D1 between two adjacent wire cores 1 is 0.25 +/-0.1 mm.
Specifically, the data transmission line further comprises two polyester fiber ropes 3, seven wire cores 1 are positioned between the two polyester fiber ropes 3, and the polyester fiber ropes 3 and the wire cores 1 are parallel to each other. The sheath layer 2 is coated outside the seven wire cores 1 and the two polyester fiber ropes 3. As shown in FIG. 1, the distance D2 between the polyester fiber rope 3 and the core 1 adjacent to the polyester fiber rope is 0.25 + -0.1 mm.
In the present embodiment, the polyester fiber rope 3 is a 2000D polyester fiber rope 3. Formed by twisting 2 polyester fiber ropes imported from Japan at 1000D.
As shown in fig. 1, the data transmission line cross-sectional dimension a × B is 10.2mm × 2.2mm.
The embodiment also provides a manufacturing method of the data transmission line, which is used for manufacturing the data transmission line, and the method comprises the following steps:
s1, manufacturing a wire core 1.
S11, selecting seven tinned copper wires with the diameter of 0.04 +/-0.003 mm, stranding the seven tinned copper wires to form a conducting part 111 by adopting a 300-type superfine copper stranding machine, and setting the stranding pitch to be 1.5-2.0 mm.
S12, coating a layer of PFA material on the periphery of the conducting part 111, and extruding the insulating layer 112 with the outer diameter of 0.31 +/-0.03 mm by using a 25mm type superfine Teflon extruder to form the signal wire 11.
S13, selecting the two signal wires 11 in the step S12, weaving a layer of tinned copper wire with the thickness of 0.03 +/-0.003 mm outside the two signal wires, and weaving the lay length of 6.7 +/-0.3 mm to form a shielding layer 12. And (5) adopting a potentiometer to control the take-up of the high-speed knitting machine for cross knitting. The signal shielding adopts a double-core coaxial wire weaving process, so that the consistency of signal transmission and the stability of weaving coverage rate are ensured; the tensile strength of the wire is enhanced by using superfine high-strength tin-copper alloy copper for the braided conductor material.
S14, integrally extruding a FEP film on the periphery of the shielding layer 12 by adopting an FEP ultrathin film coating process to form a middle layer 13. A25 mm type ultrafine Teflon extruder is adopted.
S2, selecting 2 1000D Japanese imported polyester fiber ropes and twisting the ropes to form 1 2000D polyester fiber rope 3, and adopting a traditional 400# stranding machine.
And S3, selecting the seven wire cores 1 in the step S1 and the two polyester fiber ropes 3 in the step S2, extruding a sheath layer 2 made of TPE material outside the seven wire cores 1 and the two polyester fiber ropes 3, and adopting a flat wire extruder special for 75mm type TPE. A non-contact laser diameter gauge is arranged in the extrusion process to measure the outer diameter; a concave-convex tester is arranged to detect the positions of concave points and convex points of the wire rod, so that the surface of the wire rod is smooth and uniform; whether the surface that is equipped with the spark tester and detects the wire rod has the damage, guarantees restrictive coating 2's quality.
The performance of the data transmission line provided in this example was tested as follows:
1. the following swing test was performed using a swing tester:
from the above test, the ± 95 ° swing frequency of the data transmission line can reach 14000 times, and the ± 180 ° swing frequency can reach 7500 times.
2. For the data transmission line provided in this embodiment, a high frequency characteristic test is performed by using high frequency test software of the high frequency association HDMI 1.4b, and the results are as follows:
1. the test contents are as follows: differential characteristic impedance, in conjunction with fig. 3:
| require that | Test results | |
| 100±10Ω | 98.2Ω-101.03Ω | Conform to |
2. The test contents are as follows: delay difference, combined with fig. 4 and 5:
description of the invention: and testing the two signal lines to obtain a difference value:
2.7653ns-2.7627ns＝0.0026ns＝2.6ps
3. the test contents are as follows: attenuation, in conjunction with fig. 6:
3. the data transmission line provided by the embodiment is tested for softness by using a softness tester.
The test standard was 65 + -15 TSU, and the test results are given in the following table, in units of TSU.
Therefore, the softness test structure meets the test standard, and the softness of the data transmission line is qualified.
Through the test, the data transmission line softness and the conducting performance that this embodiment provided are good, can prevent well that data transmission line from appearing bending or cutting off loose problem, and the high frequency characteristic is good moreover, and the transmission picture is high definition.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. Data transmission line comprising at least one core (1), characterized in that said core (1) comprises:
two signal lines (11) arranged in parallel with each other;
the shielding layer (12) is coated on the outer sides of the two signal wires (11);
and the middle layer (13) is coated on the outer side of the shielding layer (12), and the middle layer (13) is an FEP film.
2. The data transmission line of claim 1, wherein the signal line (11) includes a conductive portion (111) and an insulating layer (112) covering the conductive portion (111), the insulating layer (112) being made of PFA material.
3. The data transmission line according to claim 2, characterized in that the outer diameter of the insulating layer (112) is 0.31 ± 0.03mm.
4. The data transmission line according to claim 2, wherein the conductive part (111) is formed by twisting seven tinned copper wires, and the twist pitch of the conductive part (111) is 1.5mm to 2.0mm.
5. The data transmission line of claim 4, wherein the tinned copper wire has a diameter of 0.04 ± 0.003mm.
6. The data transmission line according to claim 1, characterized in that the shield (12) is braided from tinned copper wire with a braid lay of 6.7 ± 0.3mm.
7. The data transmission line according to claim 1, further comprising a sheath layer (2), wherein the sheath layer (2) covers the outside of all the wire cores (1).
8. The data transmission line of claim 7, characterized in that the jacket layer (2) is made of TPE material.
9. The data transmission line according to claim 7, wherein the data transmission line comprises seven cores (1), and the seven cores (1) are parallel to each other and are sequentially spaced and distributed in a row.
10. The data transmission line according to claim 9, characterized in that the data transmission line further comprises two polyester fiber ropes (3), seven of the cores (1) being located between the two polyester fiber ropes (3), the polyester fiber ropes (3) and the cores (1) being parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222455789.2U CN218241342U (en) | 2022-09-16 | 2022-09-16 | Data transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222455789.2U CN218241342U (en) | 2022-09-16 | 2022-09-16 | Data transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218241342U true CN218241342U (en) | 2023-01-06 |
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ID=84663573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222455789.2U Active CN218241342U (en) | 2022-09-16 | 2022-09-16 | Data transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218241342U (en) |
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2022
- 2022-09-16 CN CN202222455789.2U patent/CN218241342U/en active Active
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