CN201616296U - Data communication twisted-pair cable with shielding layer clamped between double sheaths - Google Patents
Data communication twisted-pair cable with shielding layer clamped between double sheaths Download PDFInfo
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- CN201616296U CN201616296U CN2010201268999U CN201020126899U CN201616296U CN 201616296 U CN201616296 U CN 201616296U CN 2010201268999 U CN2010201268999 U CN 2010201268999U CN 201020126899 U CN201020126899 U CN 201020126899U CN 201616296 U CN201616296 U CN 201616296U
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Abstract
The utility model relates to a data communication twisted-pair cable with a shielding layer clamped between double sheaths, which comprises a plurality of conductors, and each conductor is clad with an insulating layer. The utility model is characterized in that the twisted-pair cable comprises more than two groups of twisted-pair wires; every two conductors of the twisted-pair wires are twisted to form a group; more than two groups of the twisted-pair wires are twisted together in different pitches and are clad with the inner-layer sheath; the inner-layer sheath is externally clad with the shielding layer; and the shielding layer is externally clad with the outer-layer sheath. The mechanical property and electrical property of the utility model can both meet the requirements on industrial standard of the developed countries in the world, and the twisted-pair cable has the advantages of convenient use and convenient laying and is applicable to indoor and outdoor overhead and pipeline wiring.
Description
Technical field
The utility model relates to cable, particularly a kind of two shield clip screen data communication paired cables of high-performance data transmission usefulness.
Background technology
In the existing high-performance data communication paired cable, the main cross separation frame that adopts is the main unshielded cable of six classes, when this series products of design, what people mainly considered is the electromagnetic interference effect that prevents cable inside, by together with the line strand of different pitches, the cable interior lines that reduce parallel lay-up to greatest extent between electromagnetic interference, though this method can prevent effectively the cable inner wire to electromagnetic interference, the electromagnetic interference between cable and the cable or the external world is comprised that external interference effect is not good.
Briefly, external interference is the inner line of cable to last measurement, from the noise of adjacent cable induction, especially when wiring, normally several Class 6 cables lay simultaneously, at this moment between uncontrollable adjacent two or the many cables line of same lay between distance, thereby increased line to electromagnetic interference.Transmission has and has a strong impact on to the signal of main string loop and interfered loop in this kind interference, can cause distorted signals, error code etc. usually.
The utility model content
In order to improve the electromagnetic interference between the adjacent cable, the purpose of this utility model provides a kind of improved pair of shield clip screen data communication paired cable, is intended to solve traditional Class 6 cable problems such as external electromagnetic interference between cable and the cable or the external world in use.
The technical solution of the utility model is as follows:
A kind of pair of shield clip screen data communication paired cable, it comprises several conductors, described every conductor coats an insulating barrier, it is characterized in that, described paired cable comprises two groups of above twisted pair wires, and the per two conductor twistings of described twisted pair wire are formed one group, and described two groups of above twisted pair wires twist together and be coated with an internal layer sheath with different pitches, outer coating one screen of described internal layer sheath, outer coating one outer protective sleeve of described screen.
Reasonable is that described screen is an aluminium foil.
Reasonable is that described internal layer sheath is the dielectric constant materials with smaller.
Reasonable is that described twisted pair wire group is equiped with a shim between any two.
Reasonable is that described shim is cross shape.
Reasonable is that described shim is rounded.
Reasonable is that described shim in the form of sheets.
Reasonable is that described shim is moulded the fat material by polyethylene or fluorine and made.
Reasonable is that described outer protective sleeve is moulded the fat material by polyvinyl chloride or fluorine and made.
Paired cable of the present utility model change on the structure, by traditional unshielded or line set of shield structural change is to sandwich the foil shielding layer structure in the middle of duplex sheath, promptly prevent external electromagnetic interference effectively, the flexibility when having increased wiring by the distance of increase adjacent cables and the dual mode of aluminum foil shielded.Mechanical performance of this cable product and electric property all can satisfy the requirement of the aspects such as industrial standard of world developed country, also can satisfy the desired fire retardant performance in American insurance merchant laboratory, have advantage easy to use, that be convenient to lay.
Required five classes when paired cable of the present utility model can satisfy the intelligent building comprehensive wiring, the requirement that surpasses five classes, six classes, surpasses six class paired cables, frequency of utilization reaches as high as 650MHZ.The product appearance rounding can be supported networks such as 100BASET ATM, gigabit Ethernet, token-ring network, is applicable to the built on stilts and pipeline wiring in indoor and outdoor.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Fig. 1 is the profile of a kind of pair of shield clip screen data communication paired cable of the present utility model;
Fig. 2 is the profile of another embodiment of Fig. 1 cable, for the shim situation is arranged.
Embodiment
Referring to Fig. 1, the utility model is an a kind of pair of shield clip screen data communication paired cable, is provided with several conductors 1 in cable, every conductor 1 outer evenly coated insulation layer 2.Cable also is provided with screen 5 and outer protective sleeve 6.
One group of twisted pair wire 7 is formed in per two conductor 1 twistings, and twisted pair wire 7 of the present utility model has more than two groups.The skin of two groups or three groups or four groups twisted pair wires 7 coats internal layer sheath 4, in the skin coating screen 5 of internal layer sheath 4,6 outsides that are coated on screen 5 of outer protective sleeve.Outer protective sleeve 6 is to mould fat (FEP) material by polyvinyl chloride (PVC) or fluorine to make.
Become cable to coat one deck sheath earlier, promptly the internal layer sheath 4, vertically coat screen 5 again, coat outer protective sleeve 6 at last; Promptly insert and put one deck screen 5 in the middle of the interlayer of duplex sheath, this screen 5 can be an aluminium foil, can prevent in use between the adjacent cables so effectively or extraneous electromagnetic interference.
Referring to Fig. 2, the requirement different according to product hierarchy, when twisted pair wire 7 is stranded, can adds shim 3 and carry out the stranded cable that is formed into, installing shim 3 between the group of twisted pair wire 7 and group just, inner not collinear to strengthen to having stronger anti-electromagnetic interference capability, so just formed a novel shielding category 6+network.
Shim 3 can be cross shape, or rounded, or in the form of sheets.Cross shape shim 3 is to mould fat (FEP) material by high-density polyethylene (HDPE) or fluorine to make.
The cored wire conductor 1 of paired cable of the present utility model is to be that hypoxemia or the oxygen-free copper bar of 2.6mm made through wire drawing, annealing by diameter, and the wire gauge of conductor 1 is (23～24) AWG; The insulating barrier of heart yearn is moulded fat (FEP) material by high density polyethylene (HDPE) (HDPE) or fluorine and is made, thickness of insulating layer be 0.25+/-0.02mm; Two heart yearns of twisted pair wire are the twisting shape, and the four pairs of lines all adopt the back twist technology of (30～60) %; Can adopt between the four pairs of twisted pair wires width be 5.0+/-0.5mm thickness be 0.55+/-the cross shim of 0.1mm; Duplex sheath is moulded fat (FEP) material by polyvinyl chloride (PVC), polyethylene (PE) or fluorine and is made, the thickness of two-layer sheath be 0.45+/-0.02mm, external diameter be 7.8+/-0.2mm; Duplex sheath central longitudinal bag aluminium foil strip, aluminium foil strip width be 28+/-2mm, thickness be 0.25+/-0.05mm.
Paired cable of the present utility model has four important unit for electrical property parameters: impedance, decay, electromagnetic interference, return loss the time have taken into full account this balanced relation in design.
Impedance is a parameter the most basic in the electric property, and it is by conductor lines footpath, two conductor centre-to-centre spacing, these three the parameter decisions of insulative dielectric constant, and not matching of any impedance all can cause the error of final acknowledge(ment) signal.Therefore taken into full account the influence of these three factors when design, the conductor lines footpath is big, and low cut can be got well, but cost raises, and finish line footpath is bigger than normal; The conductor lines footpath is little, and decay can be influenced.Consider when producing that pitch is different and tension force is inconsistent, can produce each line two conductor centre-to-centre spacing difference is influenced impedance, go out different insulated wire footpath according to different multiple twin pitch design, guarantee behind the finished product that the right resistance value of every line is controlled at about 100+/-15 ohm.
Decay is divided into conductor decay and diectric attenuation two parts, and the conductor decay is relevant with resistance, therefore adopts oxygen-free copper or hypoxemia copper product, makes resistance reach minimum; Insulating material selects for use high density polyethylene (HDPE) (HDPE) or fluorine to mould fat (FEP) material, all is the smaller material of dielectric constant and dielectric loss angle.
The superior performance of this wire rod is embodied on the anti-electromagnetic interference.Six class lines all can sandwich a shim in the centre of four pairs of lines when design, distance between its two pairs of lines is strengthened, and keep every pair of line to separate in cavity, the position interfixes each other, not can with other line to contacting, reduced the dielectric constant in the whole cavity substantially.This interlayer can make along the electromagnetic field of conductor transmission decays on vertical minimum degree ground of cable, makes the field decay farthest between each twisted pair wire and another twisted pair wire, thereby improves electromagnetic interference and fade performance.The line that the mode that adds shim only can solve cable inside between electromagnetic interference, for then solving from the electromagnetic interference between adjacent cables, and the utility model had both been considered electromagnetic interference in the line group, also considered electromagnetic interference between the line group, because the solution of electromagnetic interference brings realization by two-layer sheath and one deck aluminium foil between the line group.Two-layer sheath had basically both guaranteed that aluminium foil strip can normally bring into play anti-jamming capacity, had also increased the distance between the adjacent lines group, thereby had avoided extraneous electromagnetic interference.
Return loss is subjected to the influence of input impedance, since with load impedance do not match or make in the inhomogeneous point in cycle, thereby the reflection that produces signal, input impedance is fluctuateed up and down at characteristic impedance value, the energy of reflection aggravates along with the increase of frequency, even can produce the sudden change significantly of return loss.The utility model adopts the pre-back twist technology of pair twist, eliminates the influence of periodic inconsistent generation to input impedance, improves the stability of input impedance, thereby optimizes return loss.
More than all embodiment only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.
Claims (9)
1. two shield clip screen data communication paired cable, it comprises several conductors, described every conductor coats an insulating barrier, it is characterized in that, described paired cable comprises two groups of above twisted pair wires, and the per two conductor twistings of described twisted pair wire are formed one group, and described two groups of above twisted pair wires twist together and be coated with an internal layer sheath with different pitches, outer coating one screen of described internal layer sheath, outer coating one outer protective sleeve of described screen.
2. according to claim 1 pair of shield clip screen data communication paired cable is characterized in that described screen is an aluminium foil.
3. according to claim 1 and 2 pair of shield clip screen data communication paired cable is characterized in that described internal layer sheath is the dielectric constant materials with smaller.
4. according to claim 3 pair of shield clip screen data communication paired cable is characterized in that described twisted pair wire group is equiped with a shim between any two.
5. according to claim 4 pair of shield clip screen data communication paired cable is characterized in that described shim is cross shape.
6. according to claim 4 pair of shield clip screen data communication paired cable is characterized in that described shim is rounded.
7. according to claim 4 pair of shield clip screen data communication paired cable is characterized in that described shim in the form of sheets.
8. according to claim 5 or 6 or 7 described pairs of shield clip screen data communication paired cables, it is characterized in that described shim is moulded the fat material by polyethylene or fluorine and made.
9. according to claim 8 pair of shield clip screen data communication paired cable is characterized in that described outer protective sleeve is moulded the fat material by polyvinyl chloride or fluorine and made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201268999U CN201616296U (en) | 2010-03-10 | 2010-03-10 | Data communication twisted-pair cable with shielding layer clamped between double sheaths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201268999U CN201616296U (en) | 2010-03-10 | 2010-03-10 | Data communication twisted-pair cable with shielding layer clamped between double sheaths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616296U true CN201616296U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201268999U Expired - Lifetime CN201616296U (en) | 2010-03-10 | 2010-03-10 | Data communication twisted-pair cable with shielding layer clamped between double sheaths |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616296U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592742A (en) * | 2012-03-07 | 2012-07-18 | 苏州科宝光电科技有限公司 | Cable for 3G data communication |
| CN102751026A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Environment-friendly digital symmetrical cable |
| CN103219077A (en) * | 2012-01-20 | 2013-07-24 | 上海起帆电线电缆有限公司 | Category-six twisted pair with double sheaths |
| CN106448911A (en) * | 2016-12-15 | 2017-02-22 | 江苏戴普科技有限公司 | Reinforced network twisted pairs for rail traffic |
-
2010
- 2010-03-10 CN CN2010201268999U patent/CN201616296U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219077A (en) * | 2012-01-20 | 2013-07-24 | 上海起帆电线电缆有限公司 | Category-six twisted pair with double sheaths |
| CN102592742A (en) * | 2012-03-07 | 2012-07-18 | 苏州科宝光电科技有限公司 | Cable for 3G data communication |
| CN102592742B (en) * | 2012-03-07 | 2013-09-25 | 苏州科宝光电科技有限公司 | Cable for 3G data communication |
| CN102751026A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Environment-friendly digital symmetrical cable |
| CN106448911A (en) * | 2016-12-15 | 2017-02-22 | 江苏戴普科技有限公司 | Reinforced network twisted pairs for rail traffic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fast industry (Suzhou) Co., Ltd of China Assignor: Lingxun Electric Wire Industry (Shanghai) Co., Ltd. Contract record no.: 2012320010020 Denomination of utility model: Data communication paired cable with shield in double-conduit Granted publication date: 20101027 License type: Exclusive License Record date: 20120223 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |
|
| CX01 | Expiry of patent term |