CN2559079Y - Cable connected between distributing frame and seat - Google Patents
Cable connected between distributing frame and seat Download PDFInfo
- Publication number
- CN2559079Y CN2559079Y CN 02230598 CN02230598U CN2559079Y CN 2559079 Y CN2559079 Y CN 2559079Y CN 02230598 CN02230598 CN 02230598 CN 02230598 U CN02230598 U CN 02230598U CN 2559079 Y CN2559079 Y CN 2559079Y
- Authority
- CN
- China
- Prior art keywords
- cable
- diameter
- signal
- oversheath
- lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Communication Cables (AREA)
Abstract
The utility model relates to a cable connected between a distribution frame and a seat. The cable comprises an outer sheath extending to the two ends, and also at least four lead wires and at least three ground lines, the outer surface of each lead wire is covered with an insulation layer, every two of the lead wires and one of the ground line form a group, and form a signal transmission line after being wrapped by a shielding material, the signal transmission line and another ground line are wound by a winding belt, the outer sheath is sleeved outside the winding belt, and the diameter of the outer sheath of the cable is 5.5 m; the lead wires are single stranded lead wires made of copper with the diameters of 0.4 mm, and the cable adopts single stranded copper conductors with the diameters of about 0.4 mm suitable for being installed on the distribution frame. Each pair of wire cores is shielded by an aluminum foil to reduce cross talk between the wire pairs, each pair of wire cores has a ground line to discharge static electricity generated during the signal transmission process, thus meeting the sheathing need of a 1D +1B signal. The diameter of the outer sheath is only about 5.5 mm, thereby having small space, and being convenient for the installation on the distribution frame.
Description
Technical field
The utility model relates to telecommunication cable, more particularly, relate to a kind of be connected distributing frame and attend a banquet between cable.
Background technology
In the prior art, the queue machine of communication equipment (switch) just needs to use a kind of cable be communicated with accompanying drawing 1 with seat by distributing frame as long as the signal that relates in installing between queue machine and the seat (workbench) transmits.
Because the signal of D channel and B Channel Transmission all is a digital signal, the digital signal of different digit rates can produce bigger interference each other, influences the success rate that logs on, and very easily is subjected to the interference of hum in the communication process.
The cable of the transmission 1D+1B signal that generally uses mainly contains following two kinds at present, and a kind of netting twine (UTP) or shielding netting wire (STP) that is to use non-shielding, another kind are to use 2 core cables (RVVP) of 2 band shieldings to transmit B signal and D signal respectively.(conductor is generally strands)
The netting twine of non-shielding (UTP) has hum in communication process, and because transmission 1D+1B signal only needs 2 pairs of twisted-pair feeders, so thereby netting twine has 2 pairs not have use to cause unnecessary waste.
The netting twine (STP) of shielding can reach the requirement of the electric property of use fully, but the price of this cable is more expensive, brings very high cost for engineering in wiring.
Use a pair of twisted-pair feeder of two band shieldings because the conductor of present existing cable is the strands conductor, be not suitable for being installed on the distributing frame, folder is not tight yet even installed, sometimes binding or when adjusting the fixed position of line, make a motion a little, it is loosening to cause the routing position to take place, and causes that contact is unreliable.And the shielded type cable that uses two a pair of cores must cause taking bigger installation volume, this can cause difficulty to construction, particularly cable is installed more for a long time, sometimes the groove of attached cable all has been crowded with, even has been caused having some cables not have space mounting at needs.
The utility model content
The technical problems to be solved in the utility model is, provide a kind of being used for to transmit signal to the cable of attending a banquet from distributing frame, can overcome when transmission 1D+1B signal from the queue machine to the seat has hum even appearance to sign the defective of not advancing owing to converse after not good caused the logging on of employed cable electrical performance, the shared space of private cable is little, is more convenient for installing on distributing frame and fixing.
The technical scheme that the utility model provides is, design and a kind ofly transmit the cable of signal to attend a banquet from distributing frame, comprise the oversheath that extends to two ends, it is characterized in that, also comprise at least four single cords and at least three earth connections, be coated with insulating barrier on the outer surface of every lead, two leads and an earth connection are one group and constitute two pairs of signal transmssion lines with shielding material parcel back respectively, also comprise the take-up strap that described two pairs of holding wires and another root ground wire is wound up as one, described oversheath is sleeved on the outside of this take-up strap.
Oversheath diameter in the above-mentioned cable is 5-6mm; Lead is a kind of single cord that adopts copper material to make, and its diameter is 0.35-0.45mm.
The private cable that is provided by the utility model by using rational insulating material, and reasonably designs the construction of cable, reduces the diameter of cable stranding, has reduced the installation occupation space.Having adopted diameter on the distributing frame that is suitable for installing is sub-thread copper conductor about 0.4mm.All use aluminum foil shielded between every pair of core respectively, reduce line to cross-talk, and each all has ground wire to core, electrostatic leakage with the generation in the signals transmission, can satisfy the shielding needs of transmission 1D+1B signal fully, the diameter of oversheath has only about 5.5mm, and it is little to take up room, and is convenient to install on distributing frame.
Description of drawings
Fig. 1 is for queue machine, distributing frame in the communication equipment with the connecting line structural representation between attending a banquet;
Fig. 2 is the cross-sectional structure schematic diagram of the utility model private cable.
Embodiment
As shown in Figure 2, what the utility model provided transmits the cable of signal to attend a banquet from distributing frame, comprise the oversheath 2 that extends to two ends, in sheath 2, be provided with multiple conducting wires 7 and Duo Gen earth connection 6, quantity is set is provided with as required of lead 7 and ground wire 6, be provided with four leads 7 and three earth connections 6 in the present embodiment, for improving insulation effect, can on the outer surface of every lead, all be coated with insulating barrier 3, be that one group (totally two groups) constitute two pairs of signal transmssion lines (transmitting the 1D+1B signal respectively) with shielding material 4 parcel backs respectively with two leads and an earth connection again, two pairs of digital signals that holding wire transmitted can not interfered with each other, reduced line to cross-talk, and each all is provided with ground wire 6 to core, can be with the electrostatic leakage that produces in the signals transmission, to satisfy the shielding needs of transmission 1D+1B signal; Again these two pairs of signal transmssion lines and the 3rd ground wire are wound in one with polyester band 5, the 3rd ground wire can be released to the interference static that the outside produces, and be interference-free to guarantee the signal in the lead, 2 outsides that are sleeved on take-up strap 5 of oversheath.
Be intensity that improves cable and the rounded shape of profile that makes cable, the utility model can also further improve, promptly also can be provided with and two pairs of transmission lines and the adjacent filler 1 of another root ground wire in the inboard of take-up strap 5, filler 1 can adopt the higher material of intensity, realizes as materials such as nylon fiber or glass fibres.
In the structure of above-mentioned cable,, the diameter of oversheath 2 can be designed to 5.5mm for reducing the shared installing space of cable.
For making cable can satisfy the requirement of the digital signal of transmission 1D+1B, the single cord that lead 7 can adopt copper material to make, its diameter are 0.4mm.
The material of the insulating barrier 3 in the cable can adopt the polyethylene foamed that cable is had be suitable for transmission of digital signals and have certain mechanical property to realize that oversheath 2 can adopt pvc material to make.
Shielding material 4 in the cable can adopt shield effectiveness good, and the aluminum foil material that price is low is realized.
The 1D+1B cable that the utility model provides has following main feature: (one), conductor conductor diameter: 0.4mm D.C. resistance :≤148 Ω (two), insulating layer material: polyethylene foamed insulation diameter: the 1.05mm insulated wire is to color: green/palm fibre, and indigo plant/tangerine (three), sheath sheath material: polyvinyl chloride flame-retardant sheath material sheath diameter: 5.5mm hot strength (before aging): 〉=10.3Mpa elongation at break (before aging): 〉=100% hot strength (aging back): 〉=7.2Mpa elongation at break (aging back): 〉=65%.(4), after testing, the 1D+1B cable has following electric property:
| Sequence number | Project | Unit | Index | Remarks |
| 1 | Characteristic impedance | ohm | 100±10 | 1MHZ |
| 2 | Natural attenuation | dB/500m | 14.6 | 1MHz |
| 3 | Far-end crosstalk | dB/100m | ≥70 | 1MHz |
| 4 | The conductor direct current | Ω/km | ≤148 | 20℃ |
In sum, the construction of cable that the utility model provides is reasonable in design, by reasonably using insulating material, eliminated the unnecessary waste of using netting twine to cause, 2 pairs of twisted-pair feeders that are used in transmission 1D+1B signal are integrated in the cable, and having adopted diameter on the distributing frame that is suitable for installing is sub-thread copper conductor about 0.4mm; And guarantee that signal transmission quality is good, all use aluminum foil shielded between every pair of core respectively, reduce line to cross-talk, and each all has ground wire to core, with the electrostatic leakage of the generation in the signals transmission, can satisfy the shielding needs of transmission 1D+1B signal fully, the diameter of oversheath has only about 5.5mm, it is little to take up room, and is convenient to install on distributing frame.
Claims (9)
1, a kind ofly transmits the cable of signal to attend a banquet from distributing frame, comprise the oversheath that extends to two ends, it is characterized in that, also comprise at least four leads and at least three earth connections, be coated with insulating barrier on the outer surface of every lead, wherein per two leads and an earth connection are one group, constitute a bars transmission line with shielding material parcel back, all signal transmssion lines and another root ground wire twine with take-up strap, and described oversheath is sleeved on the outside of this take-up strap.
According to the described cable of claim 1, it is characterized in that 2, the inboard of described take-up strap also is provided with and described two pairs of transmission lines and the adjacent filler of another root ground wire.
According to claim 1 or 2 described cables, it is characterized in that 3, the diameter of described oversheath is 5-6mm.
According to claim 1 or 2 described cables, it is characterized in that 4, described lead is a kind of single cord that adopts copper material to make, its diameter is 0.35-0.45mm.
According to the described cable of claim 3, it is characterized in that 5, the diameter of described oversheath is 5.5mm.
According to the described cable of claim 4, it is characterized in that 6, the diameter of described lead is 0.4mm.
According to claim 1 or 2 described cables, it is characterized in that 7, the material of described insulating barrier is a polyethylene foamed.
According to claim 1 or 2 described cables, it is characterized in that 8, described shielding material is a kind of aluminum foil material.
9, according to claim 1 or 2 described cables, it is characterized in that, be provided with four leads and three earth connections in the described cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02230598 CN2559079Y (en) | 2002-04-04 | 2002-04-04 | Cable connected between distributing frame and seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02230598 CN2559079Y (en) | 2002-04-04 | 2002-04-04 | Cable connected between distributing frame and seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2559079Y true CN2559079Y (en) | 2003-07-02 |
Family
ID=33706528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02230598 Expired - Lifetime CN2559079Y (en) | 2002-04-04 | 2002-04-04 | Cable connected between distributing frame and seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2559079Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424788C (en) * | 2005-01-09 | 2008-10-08 | 谢志浩 | Anti-theft cable |
| CN102473482A (en) * | 2009-07-02 | 2012-05-23 | 矢崎总业株式会社 | Metallic foil-wrapped shielded electric wire |
| US8664532B1 (en) | 2008-06-13 | 2014-03-04 | Southwire Company | Metal-clad cable assembly |
| US8697996B2 (en) | 2007-06-08 | 2014-04-15 | Southwire Company | Armored cable with integral support |
-
2002
- 2002-04-04 CN CN 02230598 patent/CN2559079Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424788C (en) * | 2005-01-09 | 2008-10-08 | 谢志浩 | Anti-theft cable |
| US8697996B2 (en) | 2007-06-08 | 2014-04-15 | Southwire Company | Armored cable with integral support |
| CN101711416B (en) * | 2007-06-08 | 2015-10-14 | 南方电线有限责任公司 | There is the armored cable of integral support |
| US9396838B2 (en) | 2007-06-08 | 2016-07-19 | Southwire Company, Llc | Armored cable with integral support |
| US11948707B2 (en) | 2007-06-08 | 2024-04-02 | Southwire Company, Llc | Armored cable with integral support |
| US8664532B1 (en) | 2008-06-13 | 2014-03-04 | Southwire Company | Metal-clad cable assembly |
| CN102473482A (en) * | 2009-07-02 | 2012-05-23 | 矢崎总业株式会社 | Metallic foil-wrapped shielded electric wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120405 Granted publication date: 20030702 |