CN217306183U - Totally enclosed shielding seven-type network cable - Google Patents
Totally enclosed shielding seven-type network cable Download PDFInfo
- Publication number
- CN217306183U CN217306183U CN202220060984.2U CN202220060984U CN217306183U CN 217306183 U CN217306183 U CN 217306183U CN 202220060984 U CN202220060984 U CN 202220060984U CN 217306183 U CN217306183 U CN 217306183U
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- China
- Prior art keywords
- layer
- periphery
- shield
- shielding
- signal line
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- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920000728 polyester Polymers 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 238000004886 process control Methods 0.000 abstract description 2
- 239000011295 pitch Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
The utility model discloses a totally enclosed type shielding seven-type network cable, wherein every two oxygen-free copper conductors form a signal line pair, the periphery of the signal line pair is coated with an inner shield, the periphery of four groups of signal line pairs with inner shields is coated with an outer shield, and the periphery of the outer shield is provided with a sheath; the inner shield is composed of an aluminum layer and a polyester layer, the inner layer is the polyester layer, and the outer layer is the aluminum layer. The utility model discloses can reduce the electromagnetic wave signal of high frequency short wavelength and leak from shielding unclosed department, can effectively reduce the crosstalk of cable in the high frequency region, make things convenient for production operation and process control simultaneously, guarantee the stability of production process, avoid because of the influence of other additional shielding processes to cable transmission performance.
Description
Technical Field
The utility model relates to a seven types of net twines for data transmission, in particular to seven types of net twines of totally enclosed shielding.
Background
With the rapid development of data transmission, the requirement on the transmission performance of network lines is higher and higher, and especially to seven types of network lines, the near-end crosstalk and far-end crosstalk attenuation in the transmission characteristic index are much higher than those of the super-five and six types of network lines. The current seven types of network cables also adopt every pair of shielding modes, the shielding coverage rate is generally 25-35%, and the shielding effect is not good. Moreover, the overlapping rate is higher, which causes the twist pitch to be unstable, so that the crosstalk index is at the edge and even unqualified.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims at providing a seven types of net twines of totally enclosed shielding, under the stable circumstances of twisted pair pitch, improve the shielding effect to further reduce the crosstalk of cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme. A totally-enclosed type shielding seven-class network cable comprises insulated oxygen-free copper conductors arranged on the periphery, wherein every two oxygen-free copper conductors form a signal line pair, the periphery of the signal line pair is wrapped with an inner shield, the peripheries of four groups of signal line pairs with inner shields are wrapped with outer shields, and the peripheries of the outer shields are provided with sheaths; the inner shield is composed of an aluminum layer and a polyester layer, the inner layer is the polyester layer, and the outer layer is the aluminum layer.
Further, the nominal diameter of the oxygen-free copper conductor is 0.57 mm.
The utility model discloses can reduce the electromagnetic wave signal of high frequency short wavelength and leak from shielding unclosed department, can effectively reduce the crosstalk of cable in the high frequency region, make things convenient for production operation and process control simultaneously, guarantee the stability of production process, avoid because of the influence of other additional shielding processes to cable transmission performance.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention;
fig. 2 is a schematic cross-sectional view of the inner shield of the present invention.
In the figure, 1, oxygen-free copper conductor, 2, insulation, 3, signal line pair, 4, inner shield, 41, aluminum layer, 42, polyester layer; 5. outer shield, 6. sheath.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. Referring to fig. 1 and 2, a totally enclosed type shielding seven-type mesh wire comprises an oxygen-free copper conductor 1 provided with insulation 2 at the periphery, wherein the nominal diameter of the oxygen-free copper conductor 1 is 0.57 mm. Every two oxygen-free copper conductors 1 form a signal pair 3, the periphery of the signal pair is wrapped with an inner shield 4, the periphery of four groups of signal pairs 3 with the inner shields 4 is wrapped with an outer shield 5, and the periphery of the outer shield 5 is provided with a sheath 6; the inner shield 4 is composed of an aluminum layer 41 and a polyester layer 42, and the inner layer is the polyester layer 42 and the outer layer is the aluminum layer 41.
The utility model discloses in production technology, anaerobic copper conductor 1 carries out the outer cladding on insulating extruding machine and insulates 2, and insulating 2 adopts the high pressure to annotate nitrogen physics foaming form to adopt the mode extrusion molding of three-layer crowded altogether, wherein inlayer insulating material is linear low density polyethylene, and is better with the adhesion of single strand copper wire, foaming layer produced big bubble, cluster bubble scheduling problem when direct and anaerobic copper conductor 1 contact in the middle of the reduction, guarantees the concentricity and the electric capacity stability of heart yearn. The pair twisting of the signal wire pair 3 is carried out on a special pair twisting machine, different pair twisting pitches are set for the four signal wire pairs 3 so as to reduce coupling signals generated between the pairs as much as possible, and in addition, the back twisting active paying-off is adopted for paying-off so as to reduce the influence caused by the concentricity. When cabling, the four pairs of signal wires 3 are fixed by a mould, and the aluminum foil polyester tapes for the inner shields 4 of the pairs are folded inwards before the signal wires 3 are coated by a specific jig to form a totally-enclosed shield, and then the fully-enclosed shield is twisted together by a certain pitch. The outer shield 5 adopts a copper wire weaving form, is carried out in a weaving machine, and ensures that the weaving coverage rate is over 75 percent. The sheath 6 is extruded on a sheath extruding machine in a mode of tightly sleeving an extruding pipe, so that the loosening of the internal structure can be prevented, and the influence of a sheath material on the transmission performance can be reduced.
The inner shield 4 is an aluminum foil polyester tape (as shown in fig. 2), which is formed by compounding a metal aluminum layer 41 and a polyester layer 42, and covers the signal line pairs 3, wherein the aluminum layer 41 of the inner shield 4 faces outwards, and the polyester layer 42 is arranged inside. When the inner shield 4 (aluminum foil polyester tape) is wrapped, the aluminum layer 41 is folded inward, that is, the aluminum surfaces of the two sides of the aluminum layer 41 are in full contact with each other and are not separated by the polyester layer 42, so that a totally enclosed shield is formed.
The four pairs of signal pairs 3 adopt different pitches, so that the crosstalk is reduced to a certain extent, a fully-enclosed inner shielding form is adopted, the shielding effect is well improved, and the outer shielding 5 braided by a layer of copper wires is fully contacted with the inner shielding 4, so that the crosstalk (including far-end crosstalk NEXT and far-end attenuation ratio ACR-F) of the cable signal pairs can be effectively reduced. The sheath 6 is made of high flame retardant polyvinyl chloride material or low smoke halogen-free flame retardant polyolefin material.
Claims (2)
1. A totally enclosed type shields seven kinds of net twines, including the periphery has insulated oxygen-free copper conductor, characterized by that, every two oxygen-free copper conductors form the signal line pair and the periphery is wrapped up with the inner shield, the periphery of four groups of signal line pairs with inner shield is wrapped up with the outer shield, the periphery of the outer shield has protective jackets; the inner shield is composed of an aluminum layer and a polyester layer, the inner layer is the polyester layer, and the outer layer is the aluminum layer.
2. The totally enclosed shielded seven-type mesh wire according to claim 1, wherein the oxygen-free copper conductor has a diameter of 0.57 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220060984.2U CN217306183U (en) | 2022-01-11 | 2022-01-11 | Totally enclosed shielding seven-type network cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220060984.2U CN217306183U (en) | 2022-01-11 | 2022-01-11 | Totally enclosed shielding seven-type network cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217306183U true CN217306183U (en) | 2022-08-26 |
Family
ID=82924445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220060984.2U Active CN217306183U (en) | 2022-01-11 | 2022-01-11 | Totally enclosed shielding seven-type network cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217306183U (en) |
-
2022
- 2022-01-11 CN CN202220060984.2U patent/CN217306183U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A fully enclosed shielded Category 7 network cable Granted publication date: 20220826 Pledgee: Bank of Communications Ltd. Jiangxi branch Pledgor: PUTIAN CABLE GROUP Co.,Ltd. Registration number: Y2024980016090 |