CN104064276B - The stretch-proof type communications cable - Google Patents
The stretch-proof type communications cable Download PDFInfo
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- CN104064276B CN104064276B CN201310088510.4A CN201310088510A CN104064276B CN 104064276 B CN104064276 B CN 104064276B CN 201310088510 A CN201310088510 A CN 201310088510A CN 104064276 B CN104064276 B CN 104064276B
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Abstract
The present invention discloses a kind of stretch-proof type communications cable, including：Steel conductor, copper spindle guide body, eight copper conductors and oversheath body；Eight copper conductors are stranded two-by-two to form four pairs of twisted wires pair communicated as information；Oversheath body includes the first sub- sheath, the second sub- sheath and the 3rd sub- sheath, this first sub- sheath, the second sub- sheath and the 3rd sub- sheath center have " people " font connecting portion, first sub- sheath is coated on the steel conductor outside surfaces, second sub- sheath is coated on the first inner restrictive coating outer surface, and the 3rd sub- sheath is coated on the second inner restrictive coating outer surface；Some plain conductor one ends wounds are electrically connected to the wire sheathing in the steel conductive surface, the other end.The stretch-proof type communications cable of the present invention avoids the ability that signal is interfered and influences performance, it is ensured that while communication cable product transmission characteristic, considerably increases the ability that cable influences performance because of signal interference, stretching.
Description
Technical field
The present invention relates to a kind of communication cable, more particularly to a kind of stretch-proof type communications cable.
Background technology
The structure of common single type communication cable：The cable of pair twist structure its primary structure is to extrude one layer outside copper conductor
Insulation, stranding after single line pair twist, outside uses the structure of polyolefin oversheath, and coaxial cable primary structure is to be extruded outside inner wire
Or it is wrapped one layer insulation, then using aluminium foil or braiding as polyolefin after outer conductor as oversheath structure, due to communication
The said structure limitation of cable, in exterior finish distributing system, automated detection system, causes the larger, quality of stretching unstable
It is fixed, connect up it is cumbersome, it is unreliable and influence performance.
The content of the invention
The present invention provides a kind of stretch-proof type communications cable, and this stretch-proof type communications cable has not easy to crack, chance water not
Decomposition, stretch-proof, it is corrosion-resistant the features such as, considerably increase cable because use environment is special；Signal is avoided to interfere and shadow
Ring performance, it is ensured that while communication cable product transmission characteristic, considerably increase cable because signal interference, stretching and influence
The ability of performance.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：A kind of stretch-proof type communications cable, including：Steel is led
Body, copper spindle guide body, eight copper conductors for being coated with polyethylene layer and oversheath body；Copper shaft conductor outside surfaces are coated with plastics
Insulating barrier, this plastic insulating layer outer surface is coated with wire sheathing, and the first inner restrictive coating is coated on outside the wire sheathing
Surface；
Eight copper conductors are stranded two-by-two to form four pairs of twisted wires pair communicated as information, four twisted pair wire centering the
One twisted wire to, the second twisted wire to, the 3rd twisted wire pair and the 4th twisted wire to being arranged in order and stranded formation conductive cable core counterclockwise,
To spaced, four twisted pair wire is to respective outer surface for one twisted wire pair and the 3rd twisted wire pair and the second twisted wire pair and the 4th twisted wire
Foil shielding layer is coated with, a polyester belt is coated on described around the foil shielding layer outer surface, the second inner restrictive coating is wrapped in
Polyester belt outer surface；
The oversheath body includes the first sub- sheath, the second sub- sheath and the 3rd sub- sheath, this first sub- sheath, the second son
Sheath and the 3rd sub- sheath center have " people " font connecting portion, first company's muscle portion, second of this " people " font connecting portion
Even muscle portion and the 3rd company's muscle portion are connected respectively to the described first sub- sheath, the second sub- sheath and the 3rd sub- sheath, the first sub- sheath
The steel conductor outside surfaces are coated on, the second sub- sheath is coated on the first inner restrictive coating outer surface, the 3rd sub- sheath cladding
In the second inner restrictive coating outer surface；
Some plain conductors are spaced, and this plain conductor one ends wound is in the steel conductive surface, and plain conductor is another
One end sequentially passes through the described first sub- sheath, first company's muscle portion, second company's muscle portion, the second sub- sheath and the first inner restrictive coating and electricity
It is connected to the wire sheathing；
The pitch of first twisted wire pair and the 3rd twisted wire pair is described more than the second twisted wire pair and the pitch of the 4th twisted wire pair
The pitch of the first twisted wire pair is more than the pitch of the 3rd twisted wire pair, the section of the pitch more than the 4th twisted wire pair of second twisted wire pair
Away from；
Adjacent segments are away from design formula：0.002<∣—∣≤0.013,
Being separated by pitch design formula is：0.001<∣—∣≤0.011；
H1 is the pitch of the first twisted wire pair, and h2 is the pitch of the second twisted wire pair or the 4th twisted wire pair, and h3 is the 3rd twisted wire
To pitch.
Further improved technology scheme is as follows in above-mentioned technical proposal：
1st, in such scheme, the pitch of first twisted wire pair is 15 ~ 15.5mm, and the pitch of second twisted wire pair is
13.5 ~ 13.9mm, the pitch of the 3rd twisted wire pair is 14.2 ~ 14.6mm, the pitch of the 4th twisted wire pair for 12.7 ~
13.1mm。
2nd, in such scheme, the pitch of first twisted wire pair is 15.2mm, and the pitch of second twisted wire pair is
13.7mm, the pitch of the 3rd twisted wire pair is 14.4mm, and the pitch of the 4th twisted wire pair is 12.9mm.
3rd, in such scheme, the four twisted pair wires strand forms conductive cable core, and this conductive cable core twisting pitch is the 4th
10 times to 12.9mm of twisted wire.
4th, in such scheme, it is 120 ° that first company muscle portion, second company's muscle portion and the 3rd connect the adjacent angle of muscle portion.
5th, in such scheme, the steel conductor and copper conductor are processed by annealing process.
6th, in such scheme, the foil shielding layer is made up of the aluminium foil layer of laminated polyester film and face on its inside, institute
Laminated polyester film thickness is stated for 0.020 ± 0.002mm, the aluminium foil layer thickness is 0.014 ± 0.002 mm.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
1st, the present invention has stretch-proof, the mixed type communication cable of anti-interference function, had both effectively solved cable and has applied
Environment during work is complicated, such as the wiring tape of cable comes in the distribution system in the power supply-distribution system and building of computer room
Many inconvenience, cable can produce certain electromagnetic field around when running, so as to disturb other systems, can cause to set when serious
The other problems such as standby operation troubles；Avoid and pull cable, with preferable tensile strength and elongation percentage, both ensured to meet cable
Self-bearing ability, while also solving the problems, such as that cable is interfered in the process of running, it is ensured that transmission characteristic it is long-term steady
It is fixed, but have the advantages that emergency maintenance it is convenient, can Reusability, with obvious economic benefit and promotional value, be amenable to ring
The test of material rising-heat contracting-cold during the temperature change of border, therefore the service life of cable can be extended, it is difficult to be corroded, service life
It is long.
2nd, the present invention have stretch-proof, the mixed type communication cable of anti-interference function, breach traditional strand to after line into
The circular configuration of cable, effectively improves communication cable cross-talk（NEXT、FEXT）The surplus of index 1%, or even also improve loss
（INSERTION LOSS）1dB surpluses, increase characteristic impedance（IMPEDANCE）1.5% stability, while ensuring cable
While the transmission performance of stabilization, the performance of the transmission electricity of copper cable is increased.
3rd, the present invention has stretch-proof, the mixed type communication cable of anti-interference function, and string pitch is taken using specific strand
With and specific conductive cable core line is combined with strand into core pitch, reduce transmitting telecommunication number and electromagnetism sense produced on its loop
Should influence, greatly reduce the cross-talk of the communications cable, the electric field that wherein capacitive sensing is produced has both positive and negative polarity, and adjacent two induction field is folded
Plus after can cancel each other, reduce mutual capacitively coupled, while having taken into account other electric parameters, it also avoid electric signal and prolong
The time difference increases.
4th, the stretch-proof type communications cable of the present invention, it includes some spaced plain conductors, this plain conductor one
End is wound in the steel conductive surface, and the plain conductor other end sequentially passes through the described first sub- sheath, first company's muscle portion, the second company
Muscle portion, the second sub- sheath and the first inner restrictive coating be simultaneously electrically connected to the wire sheathing, it is to avoid the power attenuation of signal and
Transmission source is returned in signal reflex, improves the stability of signal power and performance.
Brief description of the drawings
Accompanying drawing 1 is stretch-proof type communications cable structural representation one of the present invention；
Accompanying drawing 2 is stretch-proof type communications cable structural representation two of the present invention.
In the figures above：1st, steel conductor；2nd, copper spindle guide body；3rd, copper conductor；31st, polyethylene layer；4th, oversheath body；41st,
One sub- sheath；42nd, the second sub- sheath；43rd, the 3rd sub- sheath；5th, plastic insulating layer；6th, wire sheathing；7th, the first inner sheath
Layer；8th, conductive cable core；81st, the first twisted wire pair；82nd, the second twisted wire pair；83rd, the 3rd twisted wire pair；84th, the 4th twisted wire pair；9th, aluminium foil
Screen layer；10th, polyester belt；11st, the second inner restrictive coating；12nd, " people " font connecting portion；121st, first connects muscle portion；122nd, second connects
Muscle portion；123rd, the 3rd connects muscle portion；13rd, plain conductor；14th, proof copper-wire braided screen layer.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Embodiment 1：A kind of stretch-proof type communications cable, including：Steel conductor 1, copper spindle guide body 2, eight are coated with polyethylene
The copper conductor 3 and oversheath body 4 of layer 31；The outer surface of copper shaft conductor 2 is coated with plastic insulating layer 5, outside this plastic insulating layer 5
Surface coating has wire sheathing 6, and the first inner restrictive coating 7 is coated on the outer surface of the wire sheathing 6；
Eight copper conductors 3 are stranded two-by-two to form four pairs of twisted wires pair communicated as information, the four twisted pair wires centering
First twisted wire to the 81, second twisted wire to the 82, the 3rd twisted wire to 83 and the 4th twisted wire be arranged in order and stranded formation counterclockwise to 84
Conductive cable core 8, the first twisted wire to 81 and the 3rd twisted wire to 83 with the second twisted wire to 82 and the 4th twisted wire it is spaced to 84, it is described
Four twisted pair wires are coated with foil shielding layer 9 to respective outer surface, and a polyester belt 10 is around being wrapped in the appearance of the foil shielding layer 9
Face, the second inner restrictive coating 11 is coated on the outer surface of the polyester belt 10；
The oversheath body 4 includes the first sub- sheath 41, the second sub- sheath 42 and the 3rd sub- sheath 43, this first sub- sheath
41st, the second sub- sheath 42 and the center of the 3rd sub- sheath 43 have " people " font connecting portion 12, this " people " font connecting portion 12
First company's muscle portion 121, second connect muscle portion 122 and the 3rd and connect muscle portion 123 and be connected respectively to the described first of sub- sheath 41, second
The sub- sheath 43 of sheath 42 and the 3rd, the first sub- sheath 41 is coated on the outer surface of steel conductor 1, and the second sub- sheath 42 is coated on institute
The outer surface of the first inner restrictive coating 7 is stated, the 3rd sub- sheath 43 is coated on the outer surface of the second inner restrictive coating 11；
Some plain conductors 13 are spaced, and this one ends wound of plain conductor 13 is led in the surface of steel conductor 1, metal
The other end of line 13 sequentially passes through the described first sub- sheath 41, first and connects the company of muscle portion 121, second muscle portion 122, the and of the second sub- sheath 42
First inner restrictive coating 7 is simultaneously electrically connected to the wire sheathing 6；
First twisted wire to 81 and the 3rd twisted wire to 83 pitch more than the second twisted wire to 82 and the 4th twisted wire to 84
Pitch, first twisted wire is more than the pitch that the 3rd twisted wire is to 83 to 81 pitch, and second twisted wire is more than to 82 pitch
4th twisted wire to 84 pitch；
Adjacent segments are away from design formula：0.002<∣—∣≤0.013,
Being separated by pitch design formula is：0.001<∣—∣≤0.011；
H1 be the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 pitch, h3 is
Three twisted wires to 83 pitch.
First twisted wire is 15.2mm to 81 pitch, and second twisted wire is 13.7mm, described the to 82 pitch
Three twisted wires are 14.4mm to 83 pitch, and the 4th twisted wire is 12.9mm to 84 pitch.
Above-mentioned four twisted pair wires strand forms conductive cable core 8, this twisting pitch of conductive cable core 8 be the 4th twisted wire to 84 10
Times.
It is 120 ° that above-mentioned first company muscle portion, second company's muscle portion and the 3rd connect the adjacent angle of muscle portion.
Embodiment 2：A kind of stretch-proof type communications cable, including：Steel conductor 1, copper spindle guide body 2, eight are coated with polyethylene
The copper conductor 3 and oversheath body 4 of layer 31；The outer surface of copper shaft conductor 2 is coated with plastic insulating layer 5, outside this plastic insulating layer 5
Surface coating has wire sheathing 6, and the first inner restrictive coating 7 is coated on the outer surface of the wire sheathing 6；
Eight copper conductors 3 are stranded two-by-two to form four pairs of twisted wires pair communicated as information, the four twisted pair wires centering
First twisted wire to the 81, second twisted wire to the 82, the 3rd twisted wire to 83 and the 4th twisted wire be arranged in order and stranded formation counterclockwise to 84
Conductive cable core 8, the first twisted wire to 81 and the 3rd twisted wire to 83 with the second twisted wire to 82 and the 4th twisted wire it is spaced to 84, it is described
Four twisted pair wires are coated with foil shielding layer 9 to respective outer surface, and a polyester belt 10 is around being wrapped in the appearance of the foil shielding layer 9
Face, the second inner restrictive coating 11 is coated on the outer surface of the polyester belt 10；
The oversheath body 4 includes the first sub- sheath 41, the second sub- sheath 42 and the 3rd sub- sheath 43, this first sub- sheath
41st, the second sub- sheath 42 and the center of the 3rd sub- sheath 43 have " people " font connecting portion 12, this " people " font connecting portion 12
First company's muscle portion 121, second connect muscle portion 122 and the 3rd and connect muscle portion 123 and be connected respectively to the described first of sub- sheath 41, second
The sub- sheath 43 of sheath 42 and the 3rd, the first sub- sheath 41 is coated on the outer surface of steel conductor 1, and the second sub- sheath 42 is coated on institute
The outer surface of the first inner restrictive coating 7 is stated, the 3rd sub- sheath 43 is coated on the outer surface of the second inner restrictive coating 11；
Proof copper-wire braided screen layer 14 is provided between the 3rd sub- sheath 43 and the first inner restrictive coating 11, can not both be increased
External diameter, can ensure the tractive force for needing, so as to ensure that the adhesion between the 3rd sub- sheath 43 and the first inner restrictive coating 11 again
Property, humidification is served, with very big tensile strength, it is also possible to eliminate or reduce cable in movement or twisting states
Stress, improves the service life of cable；Secondly, further enhancing interference free performance.
Some plain conductors 13 are spaced, and this one ends wound of plain conductor 13 is led in the surface of steel conductor 1, metal
The other end of line 13 sequentially passes through the described first sub- sheath 41, first and connects the company of muscle portion 121, second muscle portion 122, the and of the second sub- sheath 42
First inner restrictive coating 7 is simultaneously electrically connected to the wire sheathing 6；
First twisted wire to 81 and the 3rd twisted wire to 83 pitch more than the second twisted wire to 82 and the 4th twisted wire to 84
Pitch, first twisted wire is more than the pitch that the 3rd twisted wire is to 83 to 81 pitch, and second twisted wire is more than to 82 pitch
4th twisted wire to 84 pitch；
Adjacent segments are away from design formula：0.002<∣—∣≤0.013,
Being separated by pitch design formula is：0.001<∣—∣≤0.011；
H1 be the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 pitch, h3 is
Three twisted wires to 83 pitch.
First twisted wire is 15.5mm to 81 pitch, and second twisted wire is 13.8mm, described the to 82 pitch
Three twisted wires are 14.6mm to 83 pitch, and the 4th twisted wire is 13 mm to 84 pitch.
Above-mentioned four twisted pair wires strand forms conductive cable core 8, and this twisting pitch of conductive cable core 8 is the 4th twisted wire to 84 pitches
10 times.
Above-mentioned foil shielding layer 9 is made up of the aluminium foil layer of laminated polyester film and face on its inside, the laminated polyester film
Thickness is 0.020 ± 0.002mm, and the aluminium foil layer thickness is 0.014 ± 0.002 mm；Above-mentioned first connects muscle portion, second company's muscle
Portion and the adjacent angle of the 3rd company's muscle portion are 120 °；Above-mentioned steel conductor 1 and copper conductor 3 are processed by annealing process.
The above is further described below.
The design of aluminum foil material
According to communication cable standard and requirement, shielding is made up of one layer of one side clad aluminum foil and a drain wire, and one side is multiple
Close aluminium foil requirement and refer to following table：
The technical requirements of one side clad aluminum foil
The copper wire material used design of braiding
According to communication cable standard and requirement, the braided material of armor can be single circular copper wire or tin-plating round copper wire,
Unidirectional sub-thread broken string length is allowed to be not more than 150mm, broken string termination should be trimmed
The main performance index of finished cable
Conductor DC resistance（20℃）：≤9 6Ω/km；
The characteristic impedance of paired cable（20℃）：100±15Ω；
The characteristic impedance of coaxial cable（20℃）：75±15Ω；
The insulaion resistance of cable：≥10000 MΩ·km.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (2)
1. a kind of stretch-proof type communications cable, it is characterised in that：Including：Steel conductor（1）, copper spindle guide body（2）, eight pieces be coated with it is poly-
Pvdf layer（31）Copper conductor（3）With oversheath body（4）；Copper shaft conductor（2）Outer surface is coated with plastic insulating layer（5）,
This plastic insulating layer（5）Outer surface is coated with wire sheathing（6）, the first inner restrictive coating（7）It is coated on the wire sheathing
（6）Outer surface；
Eight copper conductors（3）It is stranded two-by-two to form four pairs of twisted wires pair communicated as information, four twisted pair wire centering the
One twisted wire pair（81）, the second twisted wire pair（82）, the 3rd twisted wire pair（83）With the 4th twisted wire pair（84）It is arranged in order and twists counterclockwise
Conjunction forms conductive cable core（8）, the first twisted wire pair（81）With the 3rd twisted wire pair（83）With the second twisted wire pair（82）With the 4th twisted wire pair
（84）Spaced, four twisted pair wire is coated with foil shielding layer to respective outer surface（9）, a polyester belt（10）Around being wrapped in
The foil shielding layer（9）Outer surface, the second inner restrictive coating（11）It is coated on the polyester belt（10）Outer surface；
The oversheath body（4）Including the first sub- sheath（41）, the second sub- sheath（42）With the 3rd sub- sheath（43）, this first son
Sheath（41）, the second sub- sheath（42）With the 3rd sub- sheath（43）Center has " people " font connecting portion（12）, this " people "
Font connecting portion（12）First company muscle portion（121）, second connect muscle portion（122）Connect muscle portion with the 3rd（123）It is connected respectively to institute
State the first sub- sheath（41）, the second sub- sheath（42）With the 3rd sub- sheath（43）, the first sub- sheath（41）The steel is coated on to lead
Body（1）Outer surface, the second sub- sheath（42）It is coated on first inner restrictive coating（7）Outer surface, the 3rd sub- sheath（43）Cladding
In second inner restrictive coating（11）Outer surface；
Some plain conductors（13）It is spaced, this plain conductor（13）One ends wound is in the steel conductor（1）Surface, metal
Wire（13）The other end sequentially passes through the described first sub- sheath（41）, first connect muscle portion（121）, second connect muscle portion（122）, second
Sub- sheath（42）With the first inner restrictive coating（7）And it is electrically connected to the wire sheathing（6）；
First twisted wire pair（81）With the 3rd twisted wire pair（83）Pitch be more than the second twisted wire pair（82）With the 4th twisted wire pair
（84）Pitch, first twisted wire pair（81）Pitch be more than the 3rd twisted wire pair（83）Pitch, second twisted wire pair
（82）Pitch be more than the 4th twisted wire pair（84）Pitch；
Adjacent segments are away from design formula：0.002<∣—∣≤0.013,
Being separated by pitch design formula is：0.001<∣—∣≤0.011；
H1 is the first twisted wire pair（81）Pitch, h2 be the second twisted wire pair（82）Or the 4th twisted wire pair（84）Pitch, h3 is
3rd twisted wire pair（83）Pitch.
2. the communications cable according to claim 1, it is characterised in that：First twisted wire pair（81）Pitch for 15 ~
15.5mm, second twisted wire pair（82）Pitch be 13.5 ~ 13.9mm, the 3rd twisted wire pair（83）Pitch for 14.2 ~
14.6mm, the 4th twisted wire pair（84）Pitch be 12.7 ~ 13.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088510.4A CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088510.4A CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
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| Publication Number | Publication Date |
|---|---|
| CN104064276A CN104064276A (en) | 2014-09-24 |
| CN104064276B true CN104064276B (en) | 2017-06-06 |
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ID=51551947
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| CN201310088510.4A Active CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
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| CN104064276A (en) | 2014-09-24 |
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