CN205542092U - High tensile superfrequency digital communication cable - Google Patents
High tensile superfrequency digital communication cable Download PDFInfo
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- CN205542092U CN205542092U CN201620288998.4U CN201620288998U CN205542092U CN 205542092 U CN205542092 U CN 205542092U CN 201620288998 U CN201620288998 U CN 201620288998U CN 205542092 U CN205542092 U CN 205542092U
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Abstract
The utility model discloses a high tensile superfrequency digital communication cable, including the cable core to and the cross of filling in the cable core separates the frame, and four couple of constituting the cable core is located four separated region that the frame is separated to the cross respectively to the group, to the group by two thoroughly do away with along the heart yearn each other the transposition forming, external diameter that should insulating heart yearn is d, the adjacent bipartition that the frame is separated to the cross asks the portion's of holding transition to link to each other at a distance from the fin with the arc, does the arc that is the arc surface ask the portion of holding to belong to the radius R= (1.05 of circle 1.10 )D, four partition fin tops that the frame is separated to the cross are provided with the portion of shoring, have all buried the tensile sideline in the portion of shoring underground, and the cross is separated the core of frame and has been buried the tensile heart yearn underground, on the cable core from the lining outwards in proper order the cladding have fire -retardant waterproof layer, shielding layer and outer jacket. This digital communication cable not only cable structure is stable firm, can effectively reduce the jammer between the group, has higher tensile strength moreover, in specially adapted high frequency, the high -speed digital signal cable.
Description
Technical field
This utility model relates to a kind of cable for digital communication, particularly relates to a kind of with separating skeleton and having more high-tensile cable for digital communication.
Background technology
Development along with society, communication technology stepped into information, digital times, network service science and technology develops to deeper, widely field with unprecedented speed, this just requires that cable for digital communication has higher transmission speed, broader transmission bandwidth, with realize information quick, accurately transmit.
The good and bad tight association of the performance indications such as the altofrequency of cable for digital communication, two-forty performance and its impedance, decay and cross-talk.In the impedance behavior of cable for digital communication, its characteristic impedance is mainly affected by dielectric constant, insulated electric conductor, conductor diameter and unit length twist number, and cable input impedance is the most to a great extent by conductor diameter, be associated to mutual alignment between line group and cable conductor pitch structure.Line group structure, conductor mutual alignment spacing all will be caused the change of input impedance, and interconductor capacitance value and pad value deviate its ideal value, the most substantially cause fluctuation and the decline of cable transmission performance.Affect cable for digital communication, the particularly prior parameter of high-frequency digital cable performance is cross-talk, the systemic coupling cross-talk that its electromagnetic coupled is caused, the interactive interference being then because between conductor, the factors such as physical distance between line group being caused, it is decided by the mutual alignment between conductor circuit to a great extent, constant, to steady statue of line group position etc. as to line group spacing.Therefore, affect the indexs such as the impedance of high-frequency digital communication cable performance, decay and cross-talk all with its line group position and structural stability direct correlation, in other words, only guarantee line group mutual alignment and Stability Analysis of Structures, the high-performance of guarantee cable.
Paired cable is the most frequently used a kind of transmission medium in generic cabling engineering, is also a kind of cable for digital communication that current cost performance is the highest.It is to be twisted into four to line group two-by-two by eight insulation core wires, then by this four couple to line group twisted synthesizing cable, finally squeezes into oversheath and make finished cable.But in the existing this construction of cable, the relative position between line group is only fixed by cable jacket, the tractive that lays of cable all can be to construction of cable generation traction stretching and squeezing action with twist and warping, make the relative position of line group is subjected to displacement and is changed, even in cable knitting cycle, its structural parameters also can change.The fixing deflation effect of cable jacket, that can cause again line group is mutually nested, make an insulation core wire in a pair line group invade another in the circumscribed circle space of line group, and to the displacement of line group or embedding, line group spatial joint clearance all can be caused to diminish or can not get being effectively ensured.In a word, the instability of the construction of cable, inevitably result in the deterioration of the performance indications such as such as input impedance, near-end crosstalk, FEXT and decay, serious restriction communication cable operating frequency and the raising of data transmission bauds.
For improving the transmission performance of data cable, people develop the data cable with ten splitting of words skeletons, space interval in oversheath is become four area of space accommodated line group by this ten splittings of words skeleton, each region is equipped with a pair line group, it is mutually nested that this structure can effectively prevent line group, but owing to four overhanging skeleton fins of crossing skeleton are straight plate structure, it is point cantact to contacting between line group with respective side skeleton fin, two points of cross that only lean on line group being positioned in a certain separated region of crossing skeleton are supported, obviously its stability is the most not enough, and this support can form bigger extruding contact stress to line group, can make on the contrary to be more susceptible to line group squeeze deformation and displacement.There is larger gap between crossing skeleton fin outer end and cable cover(ing) internal diameter simultaneously, the positioning performance causing crossing skeleton is not enough, crossing skeleton inherently may occur displacement radially and play in cable jacket, cause space size shared by each pair of line group differ or change at any time, cause the extruding additional to line group and drawing-off.
Having wide range of applications of communication cable, uses environment sufficiently complex.When cable bears tensile force during laying or using, owing to cable insulation and outer jacket tend not to the tensile force that bears along its length, its tensile force can only be born by conductor, and put on the tensile force on conductor and not only result in uneven contraction and attenuate, and can make conductor position that random change occurs, thus have a strong impact on the stability of the construction of cable, the performance indications such as the deterioration input impedance of cable, near-end crosstalk, FEXT and decay, are allowed to meet the transmission requirement of high-frequency high-speed.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high tensile superfrequency cable for digital communication, it not only the construction of cable stably firm, can effectively reduce the electrical Interference between line group, and there is the higher anti-ability of stretching.
In order to solve above-mentioned technical problem, high tensile superfrequency cable for digital communication of the present utility model, including cable core, and the cross separation frame being filled in cable core, line group is laid respectively in four separated regions of cross separation frame by four couple of composition cable core, described line group is formed by two insulation core wires are the most stranded, the external diameter of this insulation core wire is d, adjacent the two of described cross separation frame separate fin and are connected with arc torr bearing portion transition, the radius R=(1.05-1.10 of the arc torr bearing portion place circle in arc surface) d；Four separation fin tops of described cross separation frame are provided with top brace part, are all embedded with tension sideline in top brace part, and the core of cross separation frame is embedded with tension heart yearn；Fire-resistant waterproof layer, screen layer and outer jacket it is coated with the most successively on described cable core.
In said structure, owing to line group is laid respectively in four separated regions of cross separation frame by four couple of cable core, this structure, in the case of ensureing the outside diameter of cable, increases the distance between line group, and the support fixation of separation frame makes line group position stable；Separation frame also plays and prevents mutually nested between line group simultaneously, it is to avoid line group is mutually embedded interference.More it is connected with arc torr bearing portion due to four separation fins of cross separation frame, and the arc radius of this arc torr bearing portion is close with insulation core wire external diameter, make to press close to mutually and form face contact fixed bearing, on the one hand cross separation frame is made to grip supporting reliably to line group is formed, making line group is not likely to produce displacement and vibration, cable core structure keeps more reliable and more stable location status；On the other hand, circular arc torr bearing surface adds again ten splittings of words makes gripping contact stress reduce to the contact area of line group, avoid cross separation frame to the crimp to line group contour structures, therefore the setting of this arc torr bearing portion plays, to line group, the effect of consolidating in terms of location status and contour structures etc., thus ensure that the stability of cable parameters, the operating frequency making cable is improved, and data transmission bauds is accelerated.Again owing to being embedded with tension heart yearn and tension sideline respectively at the top brace part of cross separation frame and core, cable is enable to bear bigger tensile force, avoid tensile force to conductor structure size and the destruction of position, substantially increase the stability of the construction of cable, in turn ensure that the raising of the operating frequency of cable and the quickening of data transmission bauds.Due also to this utility model uses shielding layer structure, not only solve the electromagnetic interference problem of the inside and outside of cable, be effectively increased the overall anti-electromagnetic interference capability of cable, it is to avoid the error code phenomenon in data transmission；Use in cable core and on high fire-retardance cross separation frame and cable core, be coated with high fire-retardance waterproof layer, both cable core had been made not damaged by external force, cable is made to have preferable anti-flammability, sealing and higher mechanical strength, the intrusion of flame, corrosive gas and moisture can be prevented again further, it is also possible to make cable from the direct damage of external force.
Further embodiment of the present utility model, arc wrap angle α=90 ° of described arc torr bearing portion.This stabilized structure is effective, it is simple to fabrication and processing.
This utility model preferred implementation, the end face of the top brace part of described cross separation frame is arc surface and touches with fire-resistant waterproof laminating splice grafting.It further enhancing the support positioning action of separation frame, both made cable finished product profile rounding and be unlikely to deform, the support fixation of separation frame is more efficient, separation frame end is uniform with contacting of outer inner room simultaneously, effectively enhance cable non-deformability, avoid the extruding impact that line group position and external form are produced by protective coverings of cable to greatest extent, further increase line group position, the reliability and stability of structure, the non-deformability making cable improves, and the transmission performance keeping cable excellent is played effective effect.
This utility model further embodiment, is provided with earial drainage line between described fire-resistant waterproof layer and screen layer.Described earial drainage line is a tinned wird arranged longitudinally along the cable.It is arranged at fire-resistant waterproof layer and the earial drainage line of shielding interlayer, both there is break alarm function, can guarantee that again the isoelectric level of each section of cable, be conducive to improving the performances such as anti-interference, the cross-talk of cable.
This utility model preferred embodiments, described tension sideline and tension heart yearn are steel wire.It both can guarantee that the flexibility of cable, makes again cable have higher tensile strength.
This utility model further embodiment, the overhanging separation fin of described cross separation frame four is mutually perpendicular to intersect, and the material oxygen index (OI) of this cross separation frame is more than 30.Vertically disposed cross structure is easy to make, and this cross separation frame can be stablized line group position simultaneously, has again good flame retardant effect.
Preferably, described fire-resistant waterproof layer is the fire-retardant composite band lapping layer of thickness 0.06mm, and the oxygen index (OI) of this fire-retardant composite band is more than 32.
Preferably, described screen layer is plastic-aluminum combined layer, and the thickness of screen layer is 0.07mm.
Preferably, described outer jacket is that oxygen index (OI) is more than the low smoke halogen-free flame-retardant polyolefin of 42 and extrudes layer.
Preferably, the twisting pitch of described insulation core wire is 10mm-18mm.The twisting pitch of described cable core (1) is 50mm-85mm.
Accompanying drawing explanation
With detailed description of the invention, this utility model high tensile superfrequency cable for digital communication is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the cross section structure schematic diagram of this utility model high tensile a kind of detailed description of the invention of superfrequency cable for digital communication；
Fig. 2 is the cross section structure schematic diagram of cross separation frame in structure shown in Fig. 1；
In figure, 1 cable core, 2 pairs of line groups, 21 insulation core wires, 3 cross separation frames, 31 arc portion torr bearing portion, 32 top brace parts, 4 fire-resistant waterproof layers, 5 screen layers, 6 outer jackets, 7 earial drainage lines, 8 tension heart yearns, 9 tension sidelines.
Detailed description of the invention
Embodiment 1:
High tensile superfrequency cable for digital communication as shown in Figure 1 and Figure 2, the cable core 1 of this cable is formed to line group 2 is stranded by four, and the twisting pitch of cable core 1 is 65mm, it is also possible to prioritizing selection in 50mm 85 mm.Every a pair line group 2 is formed by two insulation core wires 21 are the most stranded, insulation core wire 21 is made up of conductor and the insulating layer of conductor that is coated on conductor, insulation core wire 21 outside diameter d is 1.18mm, its conductor is the copper wire of a diameter of 0.58 mm, the percentage elongation of conductor controls to be between 24% 26.5%, the thickness of insulating layer of conductor is 0.30 mm, and the concentricity of insulating layer of conductor is not less than 98%.Four pairs of twisting pitch to line group 2 all differ, but select to determine in 10mm 18mm to the twisting pitch of line group, and in this example, each is respectively 17.5 mm, 10.1mm, 14.2 mm and 12.3mm to the twisting pitch of line group.Being also filled with cross separation frame 3 in cable core 1, four fins being mutually perpendicular to intersect form four separated regions, are equipped with a pair line group 2 in each separated region.Line group 2 is formed by this by the insulation core wire 21 that two external diameters are d is stranded.
Four separation fins of cross separation frame 3 are mutually perpendicular to arranged in a crossed manner, and the thickness in flap apex portion is 0.63 mm, and the external diameter of place, four flap apex portions circle is 5.1mm, and the airfoil root of adjacent two cross separation frames 3 is connected with arc torr bearing portion 31 transition.This arc torr bearing portion 31 is arc surface, and the radius R=1.05d(d of arc torr bearing portion 31 place circle is insulation core wire external diameter), the radius of this circle can also be according to cross-section of cable design at R=(1.05-1.10) d preferably selects determine its size.Arc surface cornerite arc wrap angle α=90 ° of arc torr bearing portion 31, arc wrap angle α be on cross separation frame arbitrary arc surface from the angle of starting point to the end.It is provided with top brace part 32 on the top of four separation fins of cross separation frame 3, this top brace part 32 and fin part constitute T-shape cross section structure, the end face of top brace part 32 is arc surface, this arc surface happens to fit with fire-resistant waterproof layer 4 to contact, thus fire-resistant waterproof layer and outer jacket play supporting & stablizing effect reasonable, effective.All being embedded with tension sideline 8 in four top brace parts 32 of cross separation frame 3, the core of 3 four fin intersections of cross separation frame is also embedded with a tension heart yearn 9；Tension sideline 8 and tension heart yearn 9 are steel wire, and this steel wire is the steel cord that high-quality high-carbon steel surface is coated with pyrite, and tension sideline 8 is steel cord monofilament, and tension heart yearn 9 is the strand that two steel cord monofilament are stranded.Tension sideline 8 and tension heart yearn 9 can also use the polyester cord or nylon cord that tensile strength is higher.
Fire-resistant waterproof layer 4, screen layer 5, outer jacket 6 it is coated with the most successively in the outside of cable core 1.Fire-resistant waterproof layer 4 is that one layer of fire-resistant waterproof band dragging bag outside cable core drags covering, and its band is fire-retardant composite band, and the oxygen index (OI) of its inhibiting tape is more than 30；The oxygen index (OI) of the cross separation frame 3 in cable core is more than 32；Screen layer 5 is plastic-aluminum combined clad, and the thickness of this screen layer 5 is 0.07mm, and plastic-aluminum combined clad is one side aluminum foil material, and aluminum base thickness is no less than 0.045mm.External protection 6 uses the low-smoke halide-free fireproof composite polyolefine material that oxygen index (OI) is more than 42, and thickness is 0.6mm.Being provided with an earial drainage line 7 between fire-resistant waterproof layer 4 and shielding 5, earial drainage line 7 is the tinned wird of diameter 0.5mm, and earial drainage line 7 is arranged along the length direction of cable.
It is above specific embodiment of the present utility model is illustrated and illustrated, but this utility model is not restricted to above example, all equivalent transformations made according to this utility model ultimate principle, all should be within protection domain of the present utility model.
Claims (10)
1. a high tensile superfrequency cable for digital communication, including cable core (1), and the cross separation frame (3) being filled in cable core (1), line group (2) is laid respectively in four separated regions of cross separation frame (3) by four couple of composition cable core (1), it is characterized in that: described line group (2) is formed by two insulation core wires (21) are the most stranded, the external diameter of this insulation core wire (21) is d, adjacent the two of described cross separation frame (3) separate fin and are connected with arc torr bearing portion (31) transition, the radius R=(1.05-1.10 of arc torr bearing portion (31) the place circle in arc surface) d；Four separation fin tops of described cross separation frame (3) are provided with top brace part (32), are all embedded with tension sideline (8) in top brace part (32), and the core of cross separation frame (3) is embedded with tension heart yearn (9)；Fire-resistant waterproof layer (4), screen layer (5) and outer jacket (6) it is coated with the most successively on described cable core (1).
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: arc wrap angle α=90 ° of described arc torr bearing portion (31).
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: the end face of described top brace part (32) is arc surface and contacts with fire-resistant waterproof layer (4) laminating.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: being provided with earial drainage line (7) between described fire-resistant waterproof layer (4) and screen layer (5), this earial drainage line (7) is a tinned wird arranged longitudinally along the cable.
High tensile superfrequency cable for digital communication the most according to claim 4, it is characterised in that: described tension sideline (8) and tension heart yearn (9) they are steel wire.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: (3) four overhanging separation fins of described cross separation frame are mutually perpendicular to intersect, and the material oxygen index (OI) of this cross separation frame (3) is more than 30.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: described fire-resistant waterproof layer (4) is the fire-retardant composite band lapping layer of thickness 0.06mm, and the oxygen index (OI) of this fire-retardant composite band is more than 32.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: described screen layer (5) is plastic-aluminum combined layer, and the thickness of screen layer (5) is 0.07mm.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: described outer jacket (6) is that oxygen index (OI) is more than the low smoke halogen-free flame-retardant polyolefin of 42 and extrudes layer.
High tensile superfrequency cable for digital communication the most according to claim 1, it is characterised in that: the twisting pitch of described insulation core wire (21) is 10mm-18mm.
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| CN201620288998.4U CN205542092U (en) | 2016-04-09 | 2016-04-09 | High tensile superfrequency digital communication cable |
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| CN201620288998.4U CN205542092U (en) | 2016-04-09 | 2016-04-09 | High tensile superfrequency digital communication cable |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107316692A (en) * | 2017-08-07 | 2017-11-03 | 安徽徽宁电器仪表集团有限公司 | A kind of computer cable of tensile type |
| CN107331461A (en) * | 2017-07-27 | 2017-11-07 | 余眈眈 | A kind of reinforced special-shaped crossing skeleton |
| CN107492408A (en) * | 2017-08-07 | 2017-12-19 | 安徽徽宁电器仪表集团有限公司 | A kind of computer cable with matrix pattern skeleton |
| CN108520797A (en) * | 2018-06-06 | 2018-09-11 | 大连理工高邮研究院有限公司 | A kind of cable of resistance to mechanical impact extruded |
| CN108695013A (en) * | 2018-05-25 | 2018-10-23 | 浙江汉维通信器材有限公司 | A kind of dual fire-retardant water-blocking LAN cable |
| CN110556675A (en) * | 2019-09-19 | 2019-12-10 | 嘉兴市名潮电子有限公司 | Audio cable convenient to accomodate |
| CN116504447A (en) * | 2023-04-14 | 2023-07-28 | 铭扬电缆集团有限公司 | Flexible medium-voltage fireproof cable |
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2016
- 2016-04-09 CN CN201620288998.4U patent/CN205542092U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331461A (en) * | 2017-07-27 | 2017-11-07 | 余眈眈 | A kind of reinforced special-shaped crossing skeleton |
| CN107316692A (en) * | 2017-08-07 | 2017-11-03 | 安徽徽宁电器仪表集团有限公司 | A kind of computer cable of tensile type |
| CN107492408A (en) * | 2017-08-07 | 2017-12-19 | 安徽徽宁电器仪表集团有限公司 | A kind of computer cable with matrix pattern skeleton |
| CN107316692B (en) * | 2017-08-07 | 2023-09-22 | 安徽徽宁电器仪表集团有限公司 | Tensile computer cable |
| CN107492408B (en) * | 2017-08-07 | 2023-09-26 | 安徽徽宁电器仪表集团有限公司 | Computer cable with field style of calligraphy skeleton |
| CN108695013A (en) * | 2018-05-25 | 2018-10-23 | 浙江汉维通信器材有限公司 | A kind of dual fire-retardant water-blocking LAN cable |
| CN108520797A (en) * | 2018-06-06 | 2018-09-11 | 大连理工高邮研究院有限公司 | A kind of cable of resistance to mechanical impact extruded |
| CN108520797B (en) * | 2018-06-06 | 2024-05-17 | 大连理工高邮研究院有限公司 | Cable resistant to mechanical impact extrusion |
| CN110556675A (en) * | 2019-09-19 | 2019-12-10 | 嘉兴市名潮电子有限公司 | Audio cable convenient to accomodate |
| CN116504447A (en) * | 2023-04-14 | 2023-07-28 | 铭扬电缆集团有限公司 | Flexible medium-voltage fireproof cable |
| CN116504447B (en) * | 2023-04-14 | 2023-10-17 | 铭扬电缆集团有限公司 | Flexible medium-voltage fireproof cable |
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