CN220439310U - Data transmission line - Google Patents
Data transmission line Download PDFInfo
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- CN220439310U CN220439310U CN202322151360.9U CN202322151360U CN220439310U CN 220439310 U CN220439310 U CN 220439310U CN 202322151360 U CN202322151360 U CN 202322151360U CN 220439310 U CN220439310 U CN 220439310U
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- data transmission
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- signal shielding
- core wires
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 74
- 239000010410 layer Substances 0.000 claims abstract description 82
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 239000011241 protective layer Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 7
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
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- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
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- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model relates to the technical field of transmission cables, in particular to a data transmission line, which comprises a plurality of groups of data transmission units, at least one group of power line units, at least one group of data identification and control units and an unshielded or shielded twisted pair unit, wherein the data transmission units, the power line units, the data identification and control units and the unshielded or shielded twisted pair unit are wrapped by a shielding layer, and the shielding layer is wrapped by a protective layer; each data transmission unit comprises two first core wires and a first ground wire, each first core wire comprises a first conductor and a first insulating layer wrapping the first conductor, the two first core wires are wrapped by a second insulating layer together, and a gap between the second insulating layer and the first core wires is filled by a middle layer. It can be seen that the data transmission line can improve the stability of data transmission, improve high-frequency performance, and greatly reduce the possibility of signal distortion.
Description
Technical Field
The utility model relates to the technical field of transmission cables, in particular to a data transmission line.
Background
The data transmission line is a data line for transmitting a data signal. At present, a data transmission line generally comprises a main sheath, a transmission unit for transmitting data signals is arranged in the main sheath, the transmission unit comprises two first core wires, and the two first core wires are wrapped together through an insulating layer. However, only the two first core wires wrapped together by the insulating layer are mutually separated, and in the subsequent production process, because the paying-off tension of the two first core wires is inconsistent, one first core wire is easily tensioned, the other first core wire is loosened, and finally the lengths of the two first core wires are inconsistent, so that signal attenuation, internal delay difference and the like are caused, and signal distortion seriously affects actual transmission.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a data transmission line to solve the above-mentioned problems of the prior art.
The utility model solves the problems in the prior art by adopting the technical scheme that: a data transmission line comprising a plurality of groups of data transmission units, at least one group of power line units, at least one group of data identification and control units and an unshielded or shielded twisted pair unit, wherein the data transmission units, the power line units, the data identification and control units and the unshielded or shielded twisted pair unit are wrapped by a shielding layer, and the shielding layer is wrapped by a protective layer; and
each data transmission unit comprises two first core wires and a first ground wire, wherein each first core wire comprises a first conductor and a first insulating layer wrapping the first conductor, the two first core wires are wrapped by a second insulating layer together, a gap between the second insulating layer and the first core wires is filled by a middle layer, and the first ground wire is arranged between the middle layer and the second insulating layer.
It can be seen that after two first core wires in the data transmission unit adopted by the data transmission line are wrapped by the first insulating layer, gaps between the first core wires and the first insulating layer are filled by the middle-layer, the middle-layer can fasten the first core wires and the second core wires wrapped by the first insulating layer, the fact that one first core wire is strained by the other first core wire and the length of the two first core wires is not consistent due to inconsistent paying-off tension of the two first core wires in a subsequent procedure is prevented, namely the stability of data transmission of the data transmission line can be improved, high-frequency performance is improved, and the possibility of signal distortion is greatly reduced.
Preferably, a gap is left between the two first core wires in each of the transmission units, and the gap is filled by the middle coating.
Preferably, the second insulating layer includes an insulating portion and a first signal shielding portion, both the first core wires are wrapped together by the first signal shielding portion, and a gap between the first signal shielding portion and the first core wire is filled by the middle coating layer;
the first ground wire is arranged between the first signal shielding part and the middle quilt layer; and
the insulating part wraps the first signal shielding part.
Preferably, the first signal shielding part includes a conductive surface, and the conductive surface is in contact with the first ground line.
Preferably, the middle quilt layer is made of polyethylene materials.
Preferably, the data transmission unit includes 2 or 4 groups.
Preferably, the number of the power line units is 1-4, and the power line units comprise a second conductor and a third insulating layer wrapping the second conductor.
Preferably, the unshielded or shielded twisted pair unit includes two second core wires and a second ground wire, and the two second core wires and the second ground wire are together wrapped by a fourth insulation layer.
Preferably, the shielding layer includes a second signal shielding part and a third signal shielding part, the second signal shielding part wraps the data transmission unit, the power line unit, the data identification and control unit and the non-shielding or shielding twisted pair unit, the third signal shielding part wraps the second signal shielding part, and the protective layer wraps the third signal shielding part; and
the data transmission line further includes a total ground line disposed between the second signal shielding portion and the third signal shielding portion.
Preferably, the device further comprises a filling unit, wherein the filling unit, the data transmission unit, the power line unit, the data identification and control unit and the unshielded or shielded twisted pair unit are jointly wrapped by the shielding layer.
Drawings
FIG. 1 is a cross-sectional view of a data transmission line of the present utility model;
fig. 2 is a cross-sectional view of a transmission unit in a data transmission line according to the present utility model.
Reference numerals in the drawings:
100. a data transmission unit; 110. a first core wire; 111. a first conductor; 112. a first insulating layer; 120. a first ground line; 130. a second insulating layer; 131. an insulating part; 132. a first signal shielding part; 140. a middle quilt layer;
200. a power line unit; 210. a second conductor; 220. a third insulating layer;
300. a data recognition and control unit; 310. a third conductor; 320. a fifth insulating layer;
400. unshielded or shielded twisted pair cells; 410. a second core wire; 420. a second ground line; 430. a fourth insulation;
500. a shielding layer; 510. a second signal shielding part; 520. a third signal shielding section;
600. a protective layer; 700. a filling unit; 800. and (3) a total ground wire.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The data transmission line is mainly used for data transmission of A-type, B-type, microB-type and C-type interfaces of the USB series of consumer electronics.
As shown in fig. 1: a data transmission line includes a plurality of sets of data transmission units 100, at least one set of power line units 200, at least one set of data identification and control units 300, and an unshielded or shielded twisted pair unit 400.
Wherein, the multiple sets of data transmission units 100 are used for transmitting differential signal pairs of 5GHz/10GHz/20 GHz. For example, the data transmission unit 100 may be provided with 2 or 4 groups according to different product devices.
The power line unit 200 is used to power the devices connected by the transmission line. For example, the power line unit 200 may be designed according to the voltage drop requirement of the device, such as 1 to 4 groups may be provided.
The data recognition and control unit 300 plays a role in recognition and control during data transmission. For example, the data recognition and control unit 300 may set 2 to 4 groups according to different product devices.
The unshielded or shielded twisted pair unit 400 is used to transmit the USB2.0 function of 480 Mbps.
Further, the plurality of sets of the data transmission unit 100, the power line unit 200, the data recognition and control unit 300, and the unshielded or shielded twisted pair unit 400 are wrapped by the shielding layer 500, and the shielding layer 500 is wrapped by the protection layer 600. The shielding layer 500 may play a role in shielding and anti-interference, and the protection layer 600 serves as an outermost layer of the cable for protecting the cable.
Referring to fig. 2, the data transmission unit 100 may include two first core wires 110 and a first ground wire 120, respectively. Each first core wire 110 includes a first conductor 111 and a first insulating layer 112 including the first conductor 111, two first core wires 110 are wrapped together by a second insulating layer 130, a gap between the second insulating layer 130 and the first core wires 110 is filled by a middle coating 140, and a first ground wire 120 is disposed between the middle coating 140 and the second insulating layer 130.
The first conductor 111 may be made of high-conductivity bare copper, tin-plated copper, silver-plated copper, or the like. The first insulating layer 112 may be made of a polyolefin material with a low dielectric constant, such as high density polyethylene, foamed polyethylene, low density polyethylene, polypropylene, etc.
The two first core wires 110 are used to transmit positive and negative signals of the data differential signal, respectively.
The middle quilt layer 140 can be made of polyethylene material. Specifically, two first core wires 110 may be placed on a mold to fill the polyethylene material to form an intermediate layer 140 around the two first core wires 110.
In some embodiments, the two first core wires 110 may be abutted against each other. In other embodiments, a gap is left between the two first core wires 110, which gap is filled with the middle layer 140, which enables the characteristic impedance of the transmission line to be adjusted.
It can be seen that, after the two first core wires 110 in the data transmission unit 100 adopted in the data transmission line of the present application are wrapped by the first insulating layer 112, the gap between the first core wires 110 and the first insulating layer 112 is filled by the middle-layer 140, the middle-layer 140 can fasten the first core wires 110 and the second core wires 410 wrapped by the first insulating layer 112, which prevents that the first core wires 110 are strained easily due to inconsistent paying-off tension of the two first core wires 110 in the subsequent process, and the other first core wires 110 are relaxed, so that the lengths of the two first core wires 110 are inconsistent, that is, the stability of data transmission of the data transmission line can be improved, the high-frequency performance is improved, and the possibility of signal distortion is greatly reduced.
Referring to fig. 2, the second insulating layer 130 may include an insulating portion 131 and a first signal shielding portion 132, the two first core wires 110 are wrapped together by the first signal shielding portion 132, and a gap between the first signal shielding portion 132 and the first core wire 110 is filled with the middle layer 140. The first ground wire 120 is disposed between the first signal shielding portion 132 and the middle coating 140, and the insulating portion 131 wraps the first signal shielding portion 132. The insulating part 131 can be made of a hot-melt mylar material, and has the functions of insulation, protection and fixation. The first signal shielding part 132 may use an aluminum foil tape or a copper foil tape to function as a shield.
In some embodiments, the first signal shield 132 includes a conductive surface that is in contact with the first ground wire 120.
Referring to fig. 1, the power line unit 200 may include a second conductor 210 and a third insulating layer 220 surrounding the second conductor 210. The second conductor 210 may be bare copper or tin-plated copper with high conductivity.
The unshielded or shielded twisted pair unit 400 may include two second core wires 410 and a second ground wire 420, the two second core wires 410 and the second ground wire 420 being together surrounded by a fourth insulation 430 layer. The structure of the fourth insulation 430 layer may be the same as that of the second insulation layer 130, and the structure of the second core wire 410 may be the same as that of the first core wire 110. Since the signal transmitted from the unshielded or shielded twisted pair unit 400 requires a low bandwidth, the middle layer 140 between the second core wire 410 and the third insulating layer 220 may not be needed, and the cost can be reduced.
Referring to fig. 1, in some embodiments, the data recognition and control unit 300 may include a third conductor 310 and a fifth insulating layer 320 surrounding the third conductor 310. Wherein the third conductor 310 can be bare copper or tin-plated copper with high conductivity
Referring to fig. 1, the shielding layer 500 may include a second signal shielding part 510 and a third signal shielding part 520, the second signal shielding part 510 wrapping the data transmission unit 100, the power line unit 200, the data recognition and control unit 300, and the non-shielding or shielding twisted pair unit 400, the third signal shielding part 520 wrapping the second signal shielding part 510, and the protective layer 600 wrapping the third signal shielding part 520.
The second signal shielding portion 510 may be made of a shielding material such as aluminum foil, conductive tape, graphene conductive tape, copper foil, and the like, and plays roles of shielding signals and resisting interference.
The third signal shielding part 520 may be formed with a metal wire in a braiding or winding manner to form the metal shielding layer 500, thereby playing an anti-interference role. In some embodiments, the third signal shield 520 may also function as the overall ground 800 in the transmission line.
The protective layer 600 may be made of an insulating sheath material such as PVC or TPE.
In some embodiments, the video transmission line may further include a total ground 800, the total ground 800 being disposed between the second signal shielding part 510 and the third signal shielding part 520, the total ground 800 being for grounding.
Referring to fig. 1, in some embodiments, the data transmission line may further include a filling unit 700, and the filling unit 700, the data transmission unit 100, the power line unit 200, the data identification and control unit 300, and the unshielded or shielded twisted pair unit 400 are collectively surrounded by the shielding layer 500. The filler unit 700 can make the above units more round when twisted together in a data transmission line, and can play a role in stretching resistance of the transmission line. The filling unit 700 may be made of cotton thread, nylon thread, hemp rope, or the like.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The data transmission line is characterized by comprising a plurality of groups of data transmission units, at least one group of power line units, at least one group of data identification and control unit and an unshielded or shielded twisted pair unit, wherein the data transmission units, the power line units, the data identification and control units and the unshielded or shielded twisted pair unit are wrapped by a shielding layer, and the shielding layer is wrapped by a protective layer; and
each data transmission unit comprises two first core wires and a first ground wire, wherein each first core wire comprises a first conductor and a first insulating layer wrapping the first conductor, the two first core wires are wrapped by a second insulating layer together, a gap between the second insulating layer and the first core wires is filled by a middle layer, and the first ground wire is arranged between the middle layer and the second insulating layer.
2. A data transmission line according to claim 1, characterized in that a gap is left between the two first core wires in each of the transmission units, said gap being filled by the middle layer.
3. The data transmission line according to claim 1, wherein the second insulating layer includes an insulating portion and a first signal shielding portion, both the first core wires are wrapped together by the first signal shielding portion, and a gap between the first signal shielding portion and the first core wire is filled by the middle-cladding layer;
the first ground wire is arranged between the first signal shielding part and the middle quilt layer; and
the insulating part wraps the first signal shielding part.
4. A data transmission line according to claim 3, wherein the first signal shield portion includes a conductive surface, the conductive surface being in contact with the first ground line.
5. A data transmission line according to any one of claims 1 to 4 wherein the middle layer is of polyethylene material.
6. A data transmission line according to any one of claims 1 to 4, wherein the data transmission units comprise 2 or 4 groups.
7. A data transmission line according to claim 1, wherein the number of power line units is 1 to 4, and the power line units include a second conductor and a third insulating layer surrounding the second conductor.
8. A data transmission line according to claim 1, wherein the unshielded or shielded twisted pair unit comprises two second core wires and a second ground wire, both of the second core wires and the second ground wire being encased together by a fourth insulating layer.
9. A data transmission line according to claim 1, wherein the shielding layer comprises a second signal shielding portion and a third signal shielding portion, the second signal shielding portion wrapping the data transmission unit, the power line unit, the data identification and control unit, and the unshielded or shielded twisted pair unit, the third signal shielding portion wrapping the second signal shielding portion, the protective layer wrapping the third signal shielding portion; and
the data transmission line further includes a total ground line disposed between the second signal shielding portion and the third signal shielding portion.
10. A data transmission line according to claim 1, further comprising a filler unit, the data transmission unit, the power line unit, the data identification and control unit, and the unshielded or shielded twisted pair unit being collectively surrounded by the shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151360.9U CN220439310U (en) | 2023-08-10 | 2023-08-10 | Data transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151360.9U CN220439310U (en) | 2023-08-10 | 2023-08-10 | Data transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220439310U true CN220439310U (en) | 2024-02-02 |
Family
ID=89695433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322151360.9U Active CN220439310U (en) | 2023-08-10 | 2023-08-10 | Data transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220439310U (en) |
-
2023
- 2023-08-10 CN CN202322151360.9U patent/CN220439310U/en active Active
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