CN205959646U - Super gentle cable - Google Patents
Super gentle cable Download PDFInfo
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- CN205959646U CN205959646U CN201620935005.8U CN201620935005U CN205959646U CN 205959646 U CN205959646 U CN 205959646U CN 201620935005 U CN201620935005 U CN 201620935005U CN 205959646 U CN205959646 U CN 205959646U
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Abstract
Super gentle cable, this super gentle cable includes: the inner conductor, set up in inner conductor outlying insulating layer, the insulating layer winds the package for the low -density polytetrafluoroethylene area that has air gap, set up in weaving layer in the insulating layer outlying, set up in the outer weaving layer of interior weaving layer outlying, set up in outer weaving layer outlying restrictive coating. The utility model has the characteristics of communication frequency is high, attenuation constant is low, the compliance is good, and under conditions such as mechanical bending, insulating dielectric constant changes very for a short time, has stable insulation system.
Description
Technical field
This utility model belongs to radio frequency and field of microwave communication, more particularly, to one kind have high mechanical stability and
Super flexible cable of low passive intermodulation level and preparation method thereof.
Background technology
Cable is to connect conventional element in the system of high-frequency signal path, and cable is being bent or reversing etc. mechanical force
Change in size and the structure dislocation of each part of coaxial cable can be caused, thus affecting the performance of communication system during effect.It is therefore
Ensure the performance of communication system, the mechanical stability of the cable of one of matched transmission components and parts is proposed higher
Require.
Typical super flexible cable separates metal inner and outer conductor by polymer insulation and forms, the cable of this composite construction
The steady phase behaviour of machinery of cable when by mechanical stress effect and cable internal action each other, can be affected, particularly
Passive intermodulation level index.Traditional super flexible cable typically adopts real core politef as dielectric, double-deck tin-coated copper
Silk braiding, is led when bearing the mechanical stresses such as alternating bending, vibration, impact or torsion as outer conductor, the cable of this structure
Body or cable internal structure can deform, so that the passive intermodulation level of cable and total phase place change, life-time service
Shi Buneng meets stable low passive intermodulation and requires.In order to meet passive intermodulation electricity in the case of mechanical forces for the electronic equipment
Flat high requirement, needs to design a kind of super flexible cable with highly stable structure so as to inner wire, insulating barrier, outer conductor
Structure can keep stablizing each other when by mechanical force, has low passive intermodulation level nature.
Utility model content
The purpose of this utility model is the super flexible cable providing a kind of structure to have high stability and compactness, can be subject to
Ensure passive intermodulation level and the steady phase performance of machinery of cable during mechanical stress.
To achieve these goals, this utility model takes following technical solution：
Super flexible cable, including：Inner wire；It is arranged at the insulating barrier of described inner wire periphery, described insulating barrier is to have air
The low-density teflin tape in gap is wrapped；It is arranged at the interior braiding layer of described insulating barrier periphery；It is arranged at described interior braiding
The outer braiding layer of layer periphery；It is arranged at the restrictive coating of described outer braiding layer periphery.
As one kind improvement of this utility model super flexible cable, the thickness of described low-density teflin tape is 0.10mm
～0.30mm.
As one kind improvement of this utility model super flexible cable, the wrapped number of plies of described low-density teflin tape is not less than
2 layers.
As this utility model super flexible cable one kind improvement, described every layer of low-density teflin tape put up rate not
Less than 40%.
As one kind improvement of this utility model super flexible cable, described interior braiding layer is metal bandlet braiding layer.
As one kind improvement of this utility model super flexible cable, the width of described metal bandlet is not less than 0.60mm, thickness
Not less than 0.04mm, the count of interior braiding layer is not less than 96%.
As one kind improvement of this utility model super flexible cable, described outer braiding layer is circle soft annealed wire braiding layer.
As one kind improvement of this utility model super flexible cable, the count of described outer braiding layer is not less than 90%.
As one kind improvement of this utility model super flexible cable, it is provided with wrapped between described interior braiding layer and outer braiding layer
Layer.
As one kind improvement of this utility model super flexible cable, described lapping layer is binding type lapping layer.
From above technical scheme, super flexible cable of the present utility model, form insulation using low density PTFE band is wrapped
Layer, the inner homogeneous of low density PTFE band gather many microscopic pinholes so as to dielectric constant is decreased obviously, so that cable has
The features such as communication frequency is high, attenuation constant is low, flexibility is good；And because the heat resistance of low density PTFE band is good, thermal expansion
Coefficient is very little, thus under the conditions of mechanical bend etc., the change in dielectric constant of insulation is very little, has stable insulation knot
Structure.And this utility model is when making cable, the weaving of internal braiding layer improves, using braiding in bandlet braiding
Layer, carried out examination braiding using middle mold before formal braiding, by examination braiding step, checked that bandlet send band whether smooth, to keep away
Anti- band and edge-curl phenomenon occur when exempting from formally to weave；After increasing middle mold, completed the preliminary braiding of braiding layer, the work of upper mould by middle mold
With being on the premise of middle mold is tentatively woven, the requirement fully according to cable is tightly compiled to the braiding layer of preliminary braiding
Knit, so that interior braiding layer is tightr with the combination of insulating barrier, structure is more stable, thus reducing braiding layer under the conditions of mechanical stress
Relative movement is produced and insulating barrier between.
Brief description
In order to be illustrated more clearly that this utility model embodiment, below will be to required in embodiment or description of the prior art
The accompanying drawing using do simple introduce it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is the structural representation of this utility model embodiment 1；
Fig. 2 is the tangent plane structural representation of embodiment 1 cable；
Fig. 3 is the structural representation of bandlet braider；
Fig. 4 weaves the structural representation of mould for bandlet braider；
Fig. 5 is the mplifying structure schematic diagram of part A in Fig. 3；
Fig. 6 is the dynamically passive level indicatrix of embodiment 1 cable；
Fig. 7 is the dynamically passive level indicatrix of comparative example cable；
Fig. 8 is the structural representation of this utility model embodiment 2；
Fig. 9 is the tangent plane structural representation of embodiment 2 cable.
Specific embodiment
Embodiment 1
As depicted in figs. 1 and 2, the super flexible cable of the present embodiment includes inner wire 1, the insulating barrier from inside to outside setting gradually
2nd, interior braiding layer 3, outer braiding layer 4 and restrictive coating 5.Inner wire 1 is for metal wire or metallic cable it is preferred that inner wire 1 can be plating
Silver-copper wire or silver-copper plated steel clad wire or silver-plated copper stranded wire or silver-copper plated steel clad twisted wire.Insulating barrier 2 is arranged at the periphery of inner wire 1,
Insulating barrier be the low-density politef (PTFE) having the air gap carry wrapped form, further, low density PTFE band
Thickness is 0.10mm～0.30mm, and the rate of putting up of every layer of low density PTFE band is not less than 40%, and the wrapped number of plies is not less than 2 layers, around
The number of plies of bag can be according to product specification respective change.
Interior braiding layer 3 is arranged at insulating barrier 2 periphery, and interior braiding layer 3 is that metal bandlet (line) braiding forms, such as by silver-plated copper
Lenticular wire or tin plating copper strap wire or aluminium strip braiding form, and the width of metal bandlet is not less than 0.60mm, and thickness is not less than 0.04mm, interior
The count of braiding layer is not less than 96%.Outer braiding layer 4 is arranged at the periphery of interior braiding layer 3, and outer braiding layer 4 is circle soft metal
Line braiding forms, and further, outer braiding layer is formed by tinned wird or silver-coated copper wire braiding, and the count of outer braiding layer is not
Less than 90%.
Restrictive coating 5 is arranged at outer braiding layer 4 periphery, and restrictive coating 5 is tubular structure, plays the effect of protection cable.Sheath
Layer can adopt fluorinated ethylene propylene copolymer (Fluorinated ethylene propylene, abbreviation FEP) or low smoke and zero halogen
The thermoplasticity sheath level coating material such as flame-proof polyethylene is made.More specifically, in order that the construction of cable and transmission characteristic are stable, adopt
Make FEP restrictive coating with squeezing tubular type processing technique, or low-smoke non-halogen flame-retardant is made using half crowded tubular type or squash type processing technique
Pe sheath so that restrictive coating there is preferable mechanical performance and high flame retardant it is ensured that cable in mechanical strength and
The safety using.
The manufacture method of this utility model cable is as follows：
Inner wire is provided；
With low-density polytetrafluoroethylene film band around inner wire wrapped formation insulating barrier；
It is knitted to form interior braiding layer with metal bandlet in insulating barrier periphery；
It is knitted to form outer braiding layer with round wire in interior braiding layer periphery；
Form the restrictive coating of tubulose in outer braiding layer periphery.
In order to improve the stability of the construction of cable, cable is made to have low intermodulation level index, this utility model adopts metal
Bandlet is weaving interior braiding layer, and the mould of the high-speed knitter for weaving interior braiding layer is improved, by upper mould
Increase a middle mold and lower mould between, and accordingly improve weaving to obtain hard-packed interior braiding layer.The present embodiment institute
With high-speed knitter be to carry out on the basis of the high-speed knitter with model KMBMI of Jin Sheng plant equipment company limited
The braider of transformation, in addition to setting up middle mold, other structures are identical with existing high-speed knitter for the structure of this braider.As Fig. 3
Shown, high-speed knitter includes braiding head 1, upper ingot 2, lower ingot 3, upper mould 5, lower mould 6 and middle mold 7, is provided with driving in braiding head 1
The drive mechanism of upper ingot bandlet cabling and the drive mechanism (not shown) driving lower ingot bandlet cabling.Lower mould 6, middle mold 7 and upper mould 5
Interval setting and three are coaxial successively from the bottom up, and heart yearn 4 passes through lower mould 6, middle mold 7 and upper mould 5.Lower mould 6 is set by installation set 8
It is placed on braiding head 1, lower mould 6 is used for controlling the swing of heart yearn, and positions the center of mould and middle mold.
During braiding, bandlet 100 is installed on spindle (upper ingot, lower ingot), the tension adjustment of each spindle is good, and will be every
The bandlet of ingot penetrates in the through hole of middle mold；
Examination braiding is carried out with 20～30 revs/min of speed, observes whether smooth during bandlet braiding during examination braiding,
If smooth, carry out next step, if not smooth, check reason, for example：If causing winding or broken belt, check middle mold
Height and position whether suitable, middle mold is adjusted to suitable position, it is to avoid winding and broken belt；
The heart yearn 4 of tape insulation layer is passed through lower mould 6, middle mold 7 and upper mould 5, with 20～30 revs/min of speed outside heart yearn
Enclose the pre- braiding carrying out interior braiding layer, shut down after braiding one segment length, for example, shut down after 50 centimetres of braiding in advance, internal braiding layer inspection
Look into its braiding structure, if braiding structure is qualified, carry out next step, as unqualified in fruit structure, braided parameter is adjusted,
Re-start pre- braiding again；
With braiding layer in the braiding of 50～100 revs/min of speed, due to have between middle mold 7 and upper mould 5 one intersegmental every,
After bandlet 100 completes tentatively to weave through middle mold 7, the braiding layer of mould 5 tapered 9 in entrance, braiding layer at this moment can't reach
To the requirement of product, using upper mould 5, the braiding layer of middle mold 7 tentatively braiding is woven again, make weave mesh closely smooth, reach
Requirement needed for product.
Interior braiding layer of the present utility model is to be woven using bandlet, because braider has one to the material of lower ingot
Default running track, the material of each lower ingot is to run from this track, compares the metal wire knitted of traditional use pencil
Interior braiding layer, metal bandlet is banding, the problem of winding, broken belt easily, therefore will weave speed and suitably reduce, to reach
To a good weave effect.
The inspection of braiding structure includes density inspection, uniformity test, elasticity inspection, the whether conventional structure such as winding
Check, the tension force then adjusting pitch, such as crossing the uniformity undesirable then adjustment spindle as undesirable in density, such as elasticity
Undesirable, change various sizes of upper mould, then check whether middle mold position is adjusted if any winding and put in place.
As a preferred embodiment of the present utility model, as shown in figure 5, the guide groove a's of braiding guide wheel 10 of lower ingot cuts
Face is shaped as trapezoidal, trapezoidal guide groove and is more suitable for the shape of bandlet it is ensured that still keeping smooth during bandlet unwrapping wire, it is to avoid flat
With convolution it is ensured that the uniformity of the concordance of bandlet unwrapping wire and braiding, easily it is pulled off during the bandlet unwrapping wire improving banding
Or edge-curl phenomenon, reduce the impact to cable performance, improve weaving quality.Find winding as checked during braiding, also can check
Braiding guide wheel has without exception.
The upper, middle and lower mould of the present embodiment preferably employs wolfram steel and makes, and carries out minute surface throwing to the work surface of upper mould and middle mold
Light, middle mold work surface is smooth can to avoid bandlet coating (tin plating, silver-plated) to be worn, and upper mould work surface is smooth can be avoided prelisting
The coating knitting cable surface is stripped off.Further, the through-hole diameter of upper mould is 2.9mm～3.3mm, and the through-hole diameter of middle mold is
20mm～40mm, the through-hole diameter of upper mould is related to the elasticity of braiding, and the through-hole diameter of middle mold can ensure that bandlet in upper mould
Enough spaces are had to carry out pre- braiding before tightly being woven.
It is furthermore preferred that as shown in figure 4, the edge of upper mould through hole is respectively provided with the arc chord angle that radius is 1mm～10mm, arc chord angle
The cable that pre- braiding can be made smoothly slips in mould.The edge of middle mold through hole is respectively provided with the arc chord angle for radius for 5mm～10mm,
Arc chord angle can ensure that bandlet is smooth before prelisting, and prevents bandlet from prelisting the raw anti-band of hair-weaving or winding.
Because the count of interior braiding layer is very high, in braiding, bandlet easily produces crimping, anti-package and belt phenomenon,
This utility model, on the basis of existing high-speed knitter original structure, is increased by a middle mold between upper and lower mould, is existed using middle mold
Carry out examination braiding, by examination braiding step, whether inspection bandlet line sending is smooth, when avoiding formally weaving before formal braiding
Now anti-band and edge-curl phenomenon；After increasing middle mold, the effect of upper mould is on the premise of middle mold is carried out, fully according to the requirement of cable
Tightly woven, so that interior braiding layer is tightr with the combination of insulating barrier, structure is more stable, thus reducing in mechanical stress condition
Lower generation relative movement between braiding layer and insulating barrier.Upper, middle mold can ensure that knitting tension is more steady under high count
Fixed, the smooth braiding of bandlet energy high speed.
Below taking a specific application examples as a example, the concrete structure and effect of the present embodiment is explained in detail,
The cable of embodiment 2 and comparative example cable are 141 specification cables, and their concrete structure is as shown in the table：
The cable of the cable of embodiment 1 and comparative example is entered Mobile state passive intermodulation level detecting using PIM tester, surveys
Test result is：Passive intermodulation level index when the cable of comparative example moves under by mechanical stress is not more than -135dBc, implements
Passive intermodulation level index when the cable of example 1 moves under by mechanical stress is not more than -160dBc, have excellent passive mutually
Tonality energy.Fig. 6 is the dynamically passive level indicatrix of embodiment 1 cable, and Fig. 7 is the dynamically passive level index of comparative example cable
Figure, be can be seen that by Fig. 6 and Fig. 7, the mechanical stability of the cable of embodiment 1 is improved, also ensure that cable standing wave simultaneously
And loss stability.
Embodiment 2
As shown in Figure 8 and Figure 9, the present embodiment place different from embodiment 1 is：In interior braiding layer 3 and outer braiding layer 4
Between be provided with lapping layer 6, lapping layer 6 can for the wrapped or silver-plated Copper Foil of polyimide aluminum plastic belt wrapped or plastic-aluminum combined shielding band
Wrapped form.Preferably, lapping layer is binding type lapping layer, and caking property lapping layer can make lapping layer form unified structure, thus
Prevent bending or actual dynamic use during because of twining package tape between produce micrometric displacement with respect to slip, it is to avoid cable integrally damages
Consumption increases and destroys the overall mechanically stable characteristic of cable it is ensured that the concordance of cable entirety axial arrangement and stability, makes
Cable has more excellent mechanical stability.
Super flexible cable of the present utility model, interior braiding layer adopts metal bandlet to weave, thus wrapped in low density PTFE band
Insulating barrier outside formed back-up coat, cable configuration is played with reinforcing Stabilization；Outer braiding layer adopts metal round wires to compile
Knit so that the stress producing in mechanical vibration or bending can be released it is ensured that the geometry of cable and internal junction
The stability of structure, thus ensure that the steady phase behaviour of cable.
In preferred version, increase binding type lapping layer in the middle of inside and outside braiding layer so that constituting more unified between belt
Stable entirety, can effectively prevent the destruction vibrated and bend to the construction of cable and shape, and release is insulated in process of production
The stress producing with around-packing technology, will not occur relative displacement during mechanical vibration use or when bending, improve cable
Overall mechanical bend performance, constitutes more stable coaxial configuration it is ensured that this cable should in the machinery such as vibration, bend crash
The steady phase behaviour of machinery keeping excellent under force conditions.
In this specification, various pieces are described by the way of going forward one by one, and what each some importance illustrated is and other parts
Difference, between various pieces same or similar partly mutually referring to.Syntagmatic between these parts is simultaneously
It is more than the form disclosed in embodiment, the described above to the disclosed embodiments, enable professional and technical personnel in the field
Realize or use this utility model.To multiple modifications of these embodiments will be for those skilled in the art aobvious and
It is clear to, generic principles defined herein can be in the case of without departing from spirit or scope of the present utility model, at it
Realize in its embodiment.Therefore, this utility model is not intended to be limited to embodiment illustrated herein, and is to fit to herein
Disclosed principle and the consistent widest range of features of novelty.
Claims (10)
1. super flexible cable is it is characterised in that include：
Inner wire；
Be arranged at the insulating barrier of described inner wire periphery, described insulating barrier be have the low-density teflin tape of the air gap around
Bag；
It is arranged at the interior braiding layer of described insulating barrier periphery；
It is arranged at the outer braiding layer of described interior braiding layer periphery；
It is arranged at the restrictive coating of described outer braiding layer periphery.
2. super flexible cable as claimed in claim 1 it is characterised in that：The thickness of described low-density teflin tape is
0.10mm～0.30mm.
3. super flexible cable as claimed in claim 1 it is characterised in that：The wrapped number of plies of described low-density teflin tape is not little
In 2 layers.
4. the super flexible cable as described in claim 1 or 2 or 3 it is characterised in that：Described every layer of low-density teflin tape
Rate of putting up is not less than 40%.
5. super flexible cable as claimed in claim 1 it is characterised in that：Described interior braiding layer is metal bandlet braiding layer.
6. super flexible cable as claimed in claim 5 it is characterised in that：The width of described metal bandlet is not less than 0.60mm, thick
Degree is not less than 0.04mm, and the count of interior braiding layer is not less than 96%.
7. super flexible cable as claimed in claim 1 it is characterised in that：Described outer braiding layer is circle soft annealed wire braiding layer.
8. super flexible cable as claimed in claim 7 it is characterised in that：The count of described outer braiding layer is not less than 90%.
9. super flexible cable as claimed in claim 1 it is characterised in that：Be provided between described interior braiding layer and outer braiding layer around
Covering.
10. super flexible cable as claimed in claim 9 it is characterised in that：Described lapping layer is binding type lapping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935005.8U CN205959646U (en) | 2016-08-24 | 2016-08-24 | Super gentle cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935005.8U CN205959646U (en) | 2016-08-24 | 2016-08-24 | Super gentle cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205959646U true CN205959646U (en) | 2017-02-15 |
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ID=57976715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620935005.8U Active CN205959646U (en) | 2016-08-24 | 2016-08-24 | Super gentle cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205959646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128576A (en) * | 2016-08-24 | 2016-11-16 | 珠海汉胜科技股份有限公司 | Super flexible cable and preparation method thereof |
-
2016
- 2016-08-24 CN CN201620935005.8U patent/CN205959646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128576A (en) * | 2016-08-24 | 2016-11-16 | 珠海汉胜科技股份有限公司 | Super flexible cable and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shou Hao Inventor after: Chen Ning Inventor after: Liu Bin Inventor after: Zhang Lin Inventor after: Kong Hao Inventor after: Xu Ying Inventor after: Zhang Yingfeng Inventor after: Wei Xiaolan Inventor before: Shou Hao Inventor before: Chen Ning Inventor before: Liu Bin Inventor before: Zhang Lin Inventor before: Kong Hao Inventor before: Xu Ying Inventor before: Zhang Yingfeng Inventor before: Wei Xiaolan |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shou Hao Inventor after: Chen Ning Inventor after: Liu Bin Inventor after: Zhang Lin Inventor after: Kong Hao Inventor after: Xu Ying Inventor after: Zhang Yingfeng Inventor after: Wei Xiaolan Inventor before: Shou Hao Inventor before: Chen Ning Inventor before: Liu Bin Inventor before: Zhang Lin Inventor before: Kong Hao Inventor before: Xu Ying Inventor before: Zhang Yingfeng Inventor before: Wei Xiaolan |