CN204904908U - Two core parallel wiress - Google Patents
Two core parallel wiress Download PDFInfo
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- CN204904908U CN204904908U CN201520476118.1U CN201520476118U CN204904908U CN 204904908 U CN204904908 U CN 204904908U CN 201520476118 U CN201520476118 U CN 201520476118U CN 204904908 U CN204904908 U CN 204904908U
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- resin strip
- core parallel
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- metal forming
- electric wire
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Abstract
The utility model provides a two core parallel wiress, the frequency characteristic's of signal attenuation among its signal transmission that can restrain high frequency band volume rapid decay realizes at a high speed and stable action signal transmission. Two core parallel wiress has: 2 root insulated wire (3), they arrange parallelly, metal forming resin strip (5), it covers these 2 insulated wire (3) with vertical attached mode in the lump, the 1st resin strip (6), it is convoluteed and the outside of winding in metal forming resin strip (5) through the spiral, and the 2nd resin strip (7), its different direction of coiling direction of convoluteing with the spiral with the 1st resin strip (6) is convoluteed and is twined on the 1st resin strip (6) through the spiral. And, the coiling of the 1st resin strip (6) closely spaced in or equal 5mm.
Description
Technical field
The utility model relates to a kind of double-core parallel electric wire, more particularly, relates to and utilizes metal forming resin strip to cover 2 wires be arranged in parallel, and around it, be wound with the double-core parallel electric wire of resin strip.
Background technology
As the holding wire carrying out in the high frequency band for being with at GHz communicating, known a kind of double-core parallel electric wire, it is set to a pair as by many, such as 2 wires, is formed with the shielded cable of differential transmission mode transmission of digital signals.
In patent documentation 1, disclose a kind of shielded cable, this shielded cable has the shielded conductor being wound with metal forming resin strip around many holding wires.This shielded cable discloses following structure, that is, in order to suppress the suckout phenomenon (the significantly decline of the frequency characteristic of signal attenuation) in high frequency band, around holding wire, arrange metal forming resin strip in the mode longitudinally attached.At this, by in the structure of metal forming resin strip horizontal wraparound, its conductor layer and insulating barrier periodically repeat in the longitudinal direction, thus high-frequency signal causes resonance, produce suckout phenomenon, in contrast, by arranging metal forming resin strip in the mode longitudinally attached, thus make it possible to suppress above-mentioned suckout phenomenon.
Patent documentation 1: Japanese Unexamined Patent Publication 2012-238468 publication
As described in patent document 1, which, the shielded conductor be made up of metal forming resin strip is set by means of only in the mode longitudinally attached, then in the frequency band near 20GHz, the suckout that the frequency characteristic producing signal attenuation sharply reduces or inclination (dip).
Utility model content
The utility model proposes to solve above-mentioned actual conditions, its object is to provide a kind of double-core parallel electric wire, this double-core parallel electric wire can suppress the decay sharply of the frequency characteristic of the signal attenuation in the Signal transmissions of high frequency band, and can realize high speed and the transmission of stable actuating signal.
Double-core parallel electric wire involved by the utility model has: 2 insulated electric conductors, and they are arranged in parallel; Metal forming resin strip, it covers this 2 insulated electric conductors together in the mode longitudinally attached; 1st resin strip, it is wound in a spiral in the outside of this metal forming resin strip; 2nd resin strip, it is with the different direction of the coiling direction of the screw winding with the 1st resin strip, and be wound in a spiral on described 1st resin strip, the winding spacing of described 1st resin strip is less than or equal to 5mm.
The effect of utility model
According to the utility model, can provide a kind of double-core parallel electric wire, it can suppress the decay sharply of the frequency characteristic of the signal attenuation in the Signal transmissions of high frequency band, and realizes high speed and the transmission of stable actuating signal.
Accompanying drawing explanation
Fig. 1 is the figure for being described the structure example of the double-core parallel electric wire involved by the utility model.
Fig. 2 is other the figure for being described the structure example of the double-core parallel electric wire involved by the utility model.
Fig. 3 is the figure of the frequency characteristic representing the signal attenuation corresponding with the spacing of the 1st resin strip in double-core parallel electric wire.
Fig. 4 is other figure of the frequency characteristic representing the signal attenuation corresponding with the spacing of the 1st resin strip in double-core parallel electric wire.
Fig. 5 is another other the figure of the frequency characteristic representing the signal attenuation corresponding with the spacing of the 1st resin strip in double-core parallel electric wire.
The explanation of label
1 signal conductor, 2 insulators, 3 insulated electric conductors, 4 drain wires, 5 metal forming resin strips, 6 the 1st resin strips, 7 the 2nd resin strips, 10 shielded cable.
Embodiment
First, enumerate execution mode of the present utility model, be described.
(1) utility model of the application relates to a kind of double-core parallel electric wire, and it has: 2 insulated electric conductors, and they are arranged in parallel; Metal forming resin strip, it covers this 2 insulated electric conductors together in the mode longitudinally attached; 1st resin strip, it is wound in a spiral in the outside of this metal forming resin strip; 2nd resin strip, it is with the different direction of the coiling direction of the screw winding with the 1st resin strip, and be wound in a spiral on described 1st resin strip, in this double-core parallel electric wire, the winding spacing of described 1st resin strip is less than or equal to 5mm.Thereby, it is possible to suppress the decay sharply of the frequency characteristic of the signal attenuation in the Signal transmissions of high frequency band, and realize high speed and the transmission of stable actuating signal.
(2) preferably the winding spacing of described 1st resin strip is less than or equal to 4mm.Thereby, it is possible to realize the stable actuating signal transmission in wider frequency band.
[detailed content of the execution mode of the application's utility model]
Below, with reference to accompanying drawing, the concrete example of the double-core parallel electric wire involved by the utility model is described.In addition, the utility model is not limited to these examples, but comprise by shown in the scope of claim, all changes in the implication that is equal to the scope of claim and scope.
Fig. 1 and Fig. 2 is the figure for being described the structure example of double-core parallel electric wire of the present utility model, Fig. 1 is the figure of stepped construction when representing the end face observing the shielded cable formed as double-core parallel electric wire from its length direction front, and Fig. 2 is the figure for illustration of stepped construction when above-mentioned shielded cable being observed from the side relative to its length direction.
In Fig. 1 and Fig. 2,1 is signal conductor, and 2 is insulators, and 3 is insulated electric conductors, and 4 is drain wires, and 5 is metal forming resin strips, and 6 is the 1st resin strips, and 7 is the 2nd resin strips, and 10 is shielded cable.
The shielded cable 10 formed as double-core parallel electric wire has the structure 2 insulated electric conductors (holding wire) 3 be arranged in parallel, wherein, this insulated electric conductor (holding wire) 3 utilizes the insulator 2 with the dielectric constant of regulation to cover obtain being made up of signal conductor 1 single-core line or twisted wire.The signal conductor 1 of insulated electric conductor 3, by the good electrical conductor such as copper, aluminium or by implementing zinc-plated etc. single-core line or twisted wire is formed in these good electrical conductor, such as, uses the wire rod (external diameter 0.51 ~ 0.21mm) being equivalent to AWG24 ~ 32.
As the insulator 2 by signal conductor 1 electric insulation, use the insulator that dielectric constant is little as far as possible, such as, use polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), fluororesin etc.Also can make resin expanded and make in resin, to there is trickle bubble.When comprising the foaming layer in insulator 2, the frothing percentage of foaming layer can be set to 50 ~ 70%.The external diameter of the insulated electric conductor 3 formed by these wire rods and insulating resin is 3.0mm ~ 0.4mm, and such as, when using the wire rod of AWG26, the external diameter of insulated electric conductor 3 is about 1.2mm.In addition, also can replace insulated electric conductor 3, use following coaxial cord, that is, as external conductor, metal bare wire be woven or horizontal wraparound in the outside of insulator 2, or be wound with the coaxial cord of metal forming resin strip.
Further, longitudinally drain wire 4 is attached for 2 signal conductors 1 be arranged in parallel.The thickness of drain wire 4 is preferably identical with the conductor diameter of insulated electric conductor 3 or slightly thin.Or, also can adopt the structure not using drain wire 4.
In the periphery of 2 insulated electric conductors 3 and drain wire 4, as shielded conductor, metal forming resin strip 5 is set in the mode of longitudinal attaching (the winding method that cigarette volume, metal forming resin strip are consistent with the length direction of electric wire).Thus, 2 insulated electric conductors 3 are shielded together.The surface of drain wire has conductivity.Metal forming resin strip is configured to its metal forming is contacted and conducting with drain wire.
Metal forming resin strip 5 uses the metal forming resin strip be stacked in by the metal foil layer of aluminium or copper etc. on the plastic basis materials (resin strip) such as PETG (PET).The thickness of metal forming is such as 3 μm ~ 30 μm, and the thickness of plastic basis material is such as 3 μm ~ 50 μm, and the thickness of metal forming resin strip 5 is such as 6 μm ~ 80 μm.
In the arranged outside of metal forming resin strip 5 such as using the resin strip 6,7 of PETG (PET) as substrate resin.1st resin strip 6 of inner side and the 2nd resin strip 7 outside it are arranged in the mode of screw winding respectively, for the coiling direction of screw winding, the 1st resin strip 6 and the 2nd resin strip 7 different each other.
Further, in the outside of the 2nd resin strip 7, in order to make it have the resistance to water as antipollution cable, not shown crust also can be utilized to cover.
In the execution mode involved by the utility model, the metal forming resin strip 5 longitudinally attached and outside it, the 1st resin strip 6 and the 2nd resin strip 7 being covered successively in the mode that the coiling direction of screw winding is different, and by respective winding spacing optimization, thus the decay sharply of the frequency characteristic of the signal attenuation in the Signal transmissions of high frequency band can be suppressed, thus, to realize at a high speed and the transmission of stable actuating signal.
By the 1st and the 2nd resin strip 6,7 as shown in Figure 2, arrange in the mode that the coiling direction of screw winding is different each other.When the 1st resin strip is reeled in the mode of right winding, the 2nd resin strip is reeled in the mode of left winding.When the 1st resin strip is reeled in the mode of left winding, the 2nd resin strip is reeled in the mode of right winding.The overlapping widths of resin strip is preferably set to 1/1/5th ~ bis-of bandwidth.
At this, optimization is carried out to the spacing P2 of the spacing P1 of the screw winding of the 1st resin strip 6 and the screw winding of the 2nd resin strip 7.
Specifically, the screw winding spacing P1 of the 1st resin strip 6 is set to the screw winding spacing P2 being less than or equal to the 2nd resin strip 7.Or, the screw winding spacing P1 of the 1st resin strip 6 is set to 2.1 times of the width being less than or equal to arrangement 2 insulated electric conductors 3.Or, the screw winding spacing P1 of the 1st resin strip 6 is set to and is less than or equal to 5mm.More preferably the structure they combined is set to.
Fig. 3 ~ Fig. 5 is the figure of the frequency characteristic of the signal attenuation corresponding with the spacing of the 1st resin strip representing double-core parallel electric wire.In the various figures, the longitudinal axis is set to signal attenuation (dB/m), transverse axis is set to frequency (GHz), the frequency characteristic of signal attenuation is shown.Signal attenuation utilizes the insertion loss Sdd21 of the actuating signal of 2 parallel wires to represent.
At this, use the insulated electric conductor 3 (external diameter 1.2mm) of AWG26, the bandwidth of the 1st resin strip 6 and the 2nd resin strip 7 is set to 5mm, the winding spacing P2 of the 2nd resin strip 7 is all set to 5mm, the winding spacing P1 of the 1st resin strip 6 is changed, confirms signal attenuation now.The overlapping widths of resin strip is set to 1/4th of the bandwidth of respective resin strip.
Fig. 3 is the figure of the frequency characteristic of the signal attenuation represented when the winding spacing P1 of the 1st resin strip 6 being set to 6mm.It can thus be appreciated that in the frequency band lower than frequency 20GHz, namely the decline producing signal attenuation tilt, and cannot obtain the stable transmission characteristic in this frequency domain.
Fig. 4 is the figure of the frequency characteristic of the signal attenuation represented when the winding spacing P1 of the 1st resin strip 6 being set to 5mm.It can thus be appreciated that in the frequency band of overfrequency 20GHz, namely the decline producing signal attenuation tilt, but till frequency 20GHz, do not produce inclination.Thus, stable transmission characteristic is obtained at the high-frequency region till about 20GHz.
Fig. 5 is the figure of the frequency characteristic of the signal attenuation represented when the winding spacing P1 of the 1st resin strip 6 being set to 4mm.It can thus be appreciated that, in the whole frequency band till 25GHz, do not produce the decline sharply of signal attenuation, obtain stable transmission characteristic.
According to foregoing, in the mode longitudinally attached, metal forming resin strip 5 is configured in around 2 signal conductors be arranged in parallel 1 having, and distinguish in the structure of screw winding the 1st resin strip 6 and the 2nd resin strip 7 around it with different coiling direction, preferably the winding spacing of the 1st resin strip 6 is set to and is less than or equal to 5mm, be more preferably set to and be less than or equal to 4mm.In other words, the winding spacing of the 1st resin strip 6 is preferably less than or equal to the bandwidth of resin strip 6, and be more preferably less than or equal resin strip 6 bandwidth 80%.
The width of the 1st resin strip is preferably less than or equal to and the insulated electric conductor forming double-core parallel electric wire is arranged 2 and 2.1 times of width of obtaining.
The winding spacing of the 1st resin strip is preferably less than or equal to the winding spacing of the 2nd resin strip.
In addition, the winding spacing P2 of the 2nd resin strip 7 is preferably identical with the bandwidth of resin strip.Further, the bandwidth of the 1st and the 2nd resin strip 6,7 is preferably set to about 4 times of the diameter of insulated electric conductor 3.
According to above-mentioned structure, by optimizations such as the winding spacings by the 1st resin strip 6 and the 2nd resin strip 7, thus the decay sharply of the frequency characteristic of the signal attenuation in the Signal transmissions of high frequency band can be suppressed, thereby, it is possible to realize high speed and the transmission of stable actuating signal.
Claims (8)
1. a double-core parallel electric wire, it has: 2 insulated electric conductors, and they are arranged in parallel; Metal forming resin strip, it covers this 2 insulated electric conductors together in the mode longitudinally attached; 1st resin strip, it is wound in a spiral in the outside of this metal forming resin strip; And the 2nd resin strip, it, with the different direction of the coiling direction of the screw winding with the 1st resin strip, is wound in a spiral on described 1st resin strip,
In this double-core parallel electric wire,
The winding spacing of described 1st resin strip is less than or equal to 5mm.
2. double-core parallel electric wire according to claim 1, wherein,
The winding spacing of described 1st resin strip is less than or equal to 4mm.
3. a double-core parallel electric wire, it has: 2 insulated electric conductors, and they are arranged in parallel; Metal forming resin strip, it covers this 2 insulated electric conductors together in the mode longitudinally attached; 1st resin strip, it is wound in a spiral in the outside of this metal forming resin strip; And the 2nd resin strip, it, with the different direction of the coiling direction of the screw winding with the 1st resin strip, is wound in a spiral on described 1st resin strip,
In this double-core parallel electric wire,
The winding spacing of described 1st resin strip is less than or equal to the winding spacing of described 2nd resin strip.
4. double-core parallel electric wire according to claim 3, wherein,
The winding spacing of described 1st resin strip is less than or equal to 5mm.
5. double-core parallel electric wire according to claim 3, wherein,
The winding spacing of described 1st resin strip is less than or equal to described insulated electric conductor is arranged 2 and 2.1 times of the width obtained.
6. double-core parallel electric wire according to claim 5, wherein,
The winding spacing of described 1st resin strip is less than or equal to 5mm.
7. a double-core parallel electric wire, it has: 2 insulated electric conductors, and they are arranged in parallel; Metal forming resin strip, it covers this 2 insulated electric conductors together in the mode longitudinally attached; 1st resin strip, it is wound in a spiral in the outside of this metal forming resin strip; And the 2nd resin strip, it, with the different direction of the coiling direction of the screw winding with the 1st resin strip, is wound in a spiral on described 1st resin strip,
In this double-core parallel electric wire,
The winding spacing of described 1st resin strip is less than or equal to described insulated electric conductor is arranged 2 and 2.1 times of the width obtained.
8. double-core parallel electric wire according to claim 7, wherein,
The winding spacing of described 1st resin strip is less than or equal to 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476118.1U CN204904908U (en) | 2015-06-30 | 2015-06-30 | Two core parallel wiress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476118.1U CN204904908U (en) | 2015-06-30 | 2015-06-30 | Two core parallel wiress |
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| Publication Number | Publication Date |
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| CN204904908U true CN204904908U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520476118.1U Active CN204904908U (en) | 2015-06-30 | 2015-06-30 | Two core parallel wiress |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967960A (en) * | 2016-10-19 | 2018-04-27 | 住友电气工业株式会社 | Parallel rays cable |
| CN110718323A (en) * | 2018-07-12 | 2020-01-21 | 矢崎总业株式会社 | Wiring structure of double-core parallel shielded wire |
| CN114175394A (en) * | 2019-10-02 | 2022-03-11 | 住友电气工业株式会社 | Double-core parallel cable |
-
2015
- 2015-06-30 CN CN201520476118.1U patent/CN204904908U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967960A (en) * | 2016-10-19 | 2018-04-27 | 住友电气工业株式会社 | Parallel rays cable |
| CN110718323A (en) * | 2018-07-12 | 2020-01-21 | 矢崎总业株式会社 | Wiring structure of double-core parallel shielded wire |
| CN114175394A (en) * | 2019-10-02 | 2022-03-11 | 住友电气工业株式会社 | Double-core parallel cable |
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