CN207601394U - A kind of super soft bending resistance air-blowing minisize optical cable - Google Patents
A kind of super soft bending resistance air-blowing minisize optical cable Download PDFInfo
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- CN207601394U CN207601394U CN201721798952.8U CN201721798952U CN207601394U CN 207601394 U CN207601394 U CN 207601394U CN 201721798952 U CN201721798952 U CN 201721798952U CN 207601394 U CN207601394 U CN 207601394U
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- optical cable
- loose tube
- bending resistance
- sheath
- super soft
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Abstract
The utility model discloses a kind of super soft bending resistance air-blowing minisize optical cables, including sheath and the Loose tube being coated in sheath, enhancement layer is equipped between the Loose tube and sheath, optical fiber is laid in the Loose tube, the outer surface of the Loose tube is equidistantly equipped with annular groove along its length, the section of the annular groove is triangle, inverted trapezoidal or arc-shaped, and circumferentially spaced set has longitudinal microflute for the outer surface of the sheath.The air-blowing minisize optical cable has excellent bending property, excellent mechanical performance, environmental performance and mounting and installation performance, during air-blown installation, the smaller micro-pipe routing of bending angle can be passed through, improve laying efficiency, construction cost is saved, can meet the needs of air-blowing minisize optical cable wiring application in complex pipeline.
Description
Technical field
The utility model is related to communications optical cable technical field, specifically a kind of super soft bending resistance air-blowing minisize optical cable.
Background technology
Air-blowing minisize optical cable is widely used in optical fiber communication line due to the features such as its outer diameter is small, light-weight, easy for construction
Lu Zhong.In the construction process, the air-blowing mounting distance of micro optical cable and laying efficiency are limited by the influence of micro-pipe pipeline state,
Conventional micro optical cable can just compare when air-blowing pipeline is straight line or when there was only a small amount of bending and larger bending radius
It more successfully realizes air-blown installation installation, can cause micro optical cable when pipeline is in flexuosity and smaller bending angle
Since itself flexible degree is not high-leveled and difficult to pass through, then it can not complete air-blowing installation or air-blowing distance is shorter.
Utility model content
To solve the above problems, the utility model provides a kind of super soft bending resistance air-blowing minisize optical cable, there is excellent bending
Performance during air-blown installation, can pass through the smaller micro-pipe routing of bending angle, improve laying efficiency, save construction
Cost.
The technical solution adopted in the utility model is：A kind of super soft bending resistance air-blowing minisize optical cable, including sheath and is coated on
Loose tube in sheath is equipped with enhancement layer between the Loose tube and sheath, optical fiber, the pine set are laid in the Loose tube
The outer surface of pipe is equidistantly equipped with annular groove along its length, and circumferentially spaced set has longitudinal direction for the outer surface of the sheath
Microflute.
The section of the annular groove is triangle, and the depth of groove is no more than the 1/2 of Loose tube thickness, the width of groove
For 0.5 mm-1.5mm, distance is 1mm-3mm between adjacent annular groove.
The section of the annular groove is inverted trapezoidal, and the top width of groove is 0.1mm-0.25mm, and bottom width is
0.05mm-0.1mm, depth of groove are no more than the 1/2 of Loose tube thickness, and distance is 1mm-3mm between adjacent annular groove.
The section of the annular groove is arc-shaped, and the top width 0.1mm-0.25mm of groove, depth of groove is no more than
The 1/2 of Loose tube thickness, distance is 1mm-3mm between adjacent annular groove.
Inverted trapezoidal is in the section of the longitudinal direction microflute, and the top width of longitudinal microflute is 0.25mm-0.45mm, bottom width
For 0.15mm-0.35mm, groove depth 0.05mm-0.1mm.
The sheath selects PE or PA thermoplastic materials, sheath integral thickness 0.1mm-0.5mm.
The fiber selection coating diameter is 200 μm of the insensitive optical fiber of bending loss.
The medium that blocks water is filled in the Loose tube, the medium that blocks water is the powder that blocks water.
The Loose tube is using high modulus thermoplastic material as Loose tube base material.
The jacket surface coats one layer of low friction coating, formed after thermally treated curing thickness for 0.01 mm-
The film of 0.05mm is simultaneously combined closely with micro optical cable.Low-friction coefficient additive is added in the material of sheath.
The material of the enhancement layer is aramid fiber composite strengthening long filament.
The beneficial effects of the utility model are：In the outer surface of Loose tube spaced set annular groove along its length,
Coordinate the use of the insensitive optical fiber of 200 μm of bending loss, aramid fiber composite strengthening long filament and low friction coating, make the air-blowing micro-
Type optical cable has excellent mechanical performance, environmental performance and mounting and installation performance, can meet the miniature light of air-blowing in complex pipeline
The demand of cable wiring application.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the sectional side elevation of Loose tube in embodiment 1；
Fig. 3 is the sectional side elevation of Loose tube in embodiment 2；
Fig. 4 is the sectional side elevation of Loose tube in embodiment 3；
Wherein：1st, optical fiber, 2, annular groove, 3, block water medium, 4, Loose tube, 5, enhancement layer, 6, sheath, 7, longitudinal direction it is micro-
Slot, 8, low friction coating.
Specific embodiment
In order to deepen the understanding to the utility model, the utility model is made below in conjunction with embodiment and attached drawing further
It is described in detail.
Embodiment 1
As depicted in figs. 1 and 2, a kind of super soft bending resistance air-blowing minisize optical cable, including sheath 6 and the pine set being coated in sheath
Pipe 4, is equipped with enhancement layer 5 between Loose tube 4 and sheath 6, be laid with optical fiber 1 in Loose tube 4, and the outer surface of Loose tube 4 is along length
Direction is equidistantly equipped with the annular groove 2 that section is triangle, and the depth of groove is no more than the 1/2 of Loose tube thickness, groove
Width is 0.5 mm-1.5mm, and distance is 1mm-3mm between adjacent annular groove.Loose tube can ensure in this pitch range
Whole lateral pressure resistant and shock resistance are unaffected, and unique continuous circular shape groove-like Loose tube design improves to a certain extent
The pliability of micro- cable, it is ensured that micro optical cable has excellent bending property and is not easily broken, during air-blown installation, energy
The smaller micro-pipe routing of bending angle is passed through, working security and laying efficiency is improved, saves construction cost.
Fiber selection coating diameter is 200 μm of the insensitive optical fiber of bending loss.The common coating diameter of size ratio is 245 μm
Optical fiber reduce at least 20%, the smaller optical fiber of diameter is selected to directly result in the overall structure size reduction of micro- cable, thus
Make the weight of micro- cable become lighter, more conducively quickly laid using air-blowing mode.Simultaneously because optical fiber classification is in micro- cable
The insensitive optical fiber of bending loss, minimum bending radius make micro optical cable have preferable bending resistance, protect up to 7.5mm
It demonstrate,proves in the micro-pipe circuit of micro- cable in the bent state and lays and in application, keeping good optical signal transmission ability.
Loose tube uses high modulus thermoplastic material（Such as modified polycarbonate, polybutylene terephthalate (PBT)）As pine
Casing base material has stronger lateral pressure resistant and shock resistance after high temperature extrusion is cooled and shaped, pipe inner fiber is formed effectively
Protection.The medium 3 that blocks water is filled in Loose tube, the medium that blocks water selects the dusty material that blocks water to substitute traditional fiber paste, water blocking yarn or block water
For the materials such as band as waterproofing agent, the powder that blocks water is uniformly distributed in optical fiber surface and Loose tube inner wall, can immediately be expanded simultaneously after meeting water
All gaps in pipe are filled up, water is prevented to continue, to Loose tube inside seepage flow, to play good waterproof moisture-proof effect；In work progress
In, operating personnel are without being purged fiber paste, and solvent used in wiping cleaning fiber paste, also need not when saving fibre junction
Cutting and removal such as water blocking yarn or waterstop dry type material water-proof material, exempt the generation of such solid waste, generally speaking, pine
Casing Inner, which fills the powder that blocks water, can not only reduce pollution, environmental protection, but also can save the operating time, improve fused fiber splice efficiency.
The material selection aramid fiber composite strengthening long filament of enhancement layer, the fibrous material have very excellent physical mechanical
Performance and chemical property so that using aramid fiber as reinforcing material micro optical cable weight is lighter, tensile property higher, it is micro-
The ess-strain smaller that optical fiber generates in cable, service life are longer.
Sheath 6 selects the thermoplastic materials such as PE or PA, sheath integral thickness 0.1mm-0.5mm.Existed by the design of mold
By jacket outer surface, circumferentially spaced set has longitudinal microflute 7 during extrusion molding, and the section of longitudinal microflute is inverted trapezoidal, longitudinal microflute
Top width be 0.25mm-0.45mm, bottom width 0.15mm-0.35mm, groove depth 0.05mm-0.1mm.The design of microflute
Not only it is conducive to sheath stripping and fused fiber splice, but also micro optical cable is made to be reduced during air-blown installation with the frictional force of tube wall,
The contact area with air-flow is increased simultaneously, greatly improves distance and speed that air-blowing micro-cable is once laid.
Jacket surface coats one layer very thin of low friction coating 8, and it is 0.01- that thickness is formed after thermally treated curing
The film of 0.05mm is simultaneously combined closely with micro optical cable, to reduce jacket surface friction coefficient, and then reduces micro optical cable and pipe
The frictional force of wall promotes the distance of air-blown installation.Also low-friction coefficient additive can be added in micro optical cable sheath material, is made
The friction coefficient on micro- cable surface reduces.
Embodiment 2
As shown in figures 1 and 3, as different from Example 1, the outer surface of Loose tube 4 is equidistantly equipped with along its length
Section is the annular groove 2 of inverted trapezoidal, and the top width of groove is 0.1mm-0.25mm, bottom width 0.05mm-0.1mm,
Depth of groove is no more than the 1/2 of Loose tube thickness.
Embodiment 3
As shown in Figure 1 and Figure 4, as different from Example 1, the outer surface of Loose tube 4 is equidistantly equipped with along its length
Section is arc-shaped annular groove 2, and the top width 0.1mm-0.25mm of groove, depth of groove is no more than Loose tube thickness
1/2。
Claims (10)
1. a kind of super soft bending resistance air-blowing minisize optical cable, which is characterized in that described including sheath and the Loose tube being coated in sheath
Enhancement layer is equipped between Loose tube and sheath, is laid with optical fiber in the Loose tube, the outer surface of the Loose tube is along length side
To annular groove is equidistantly equipped with, circumferentially spaced set has longitudinal microflute for the outer surface of the sheath.
2. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the annular groove is cut
Face is triangle, and the depth of groove is no more than the 1/2 of Loose tube thickness, and the width of groove is 0.5 mm-1.5mm, adjacent ring
Distance is 1mm-3mm between connected in star.
3. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the annular groove is cut
Face is inverted trapezoidal, and the top width of groove is 0.1mm-0.25mm, bottom width 0.05mm-0.1mm, and depth of groove is no more than
The 1/2 of Loose tube thickness, distance is 1mm-3mm between adjacent annular groove.
4. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the annular groove is cut
Face is arc-shaped, the top width 0.1mm-0.25mm of groove, and depth of groove is no more than the 1/2 of Loose tube thickness, adjacent ring
Distance is 1mm-3mm between connected in star.
5. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the longitudinal direction microflute is cut
Face is inverted trapezoidal, and the top width of longitudinal microflute is 0.25mm-0.45mm, bottom width 0.15mm-0.35mm, groove depth
0.05mm-0.1mm。
6. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the sheath select PE or
PA thermoplastic materials, sheath integral thickness 0.1mm-0.5mm.
7. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that filled in the Loose tube
Block water medium, and the medium that blocks water is the powder that blocks water.
8. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1 or 7, which is characterized in that the Loose tube is adopted
By the use of high modulus thermoplastic material as Loose tube base material.
9. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the jacket surface coating
One layer of low friction coating, it is the film of 0.01 mm -0.05mm and close with micro optical cable that thickness is formed after thermally treated curing
With reference to.
10. the super soft bending resistance air-blowing minisize optical cable of one kind according to claim 1, which is characterized in that the material of the enhancement layer
Expect for aramid fiber composite strengthening long filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798952.8U CN207601394U (en) | 2017-12-21 | 2017-12-21 | A kind of super soft bending resistance air-blowing minisize optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798952.8U CN207601394U (en) | 2017-12-21 | 2017-12-21 | A kind of super soft bending resistance air-blowing minisize optical cable |
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| Publication Number | Publication Date |
|---|---|
| CN207601394U true CN207601394U (en) | 2018-07-10 |
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ID=62766894
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721798952.8U Active CN207601394U (en) | 2017-12-21 | 2017-12-21 | A kind of super soft bending resistance air-blowing minisize optical cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965776A (en) * | 2020-09-04 | 2020-11-20 | 江苏亨通光电股份有限公司 | Spiral micro-groove type air-blowing micro-cable, manufacturing equipment and manufacturing method |
| EP3796060B1 (en) | 2018-10-11 | 2022-12-28 | Fujikura Ltd. | Optical fiber cable |
-
2017
- 2017-12-21 CN CN201721798952.8U patent/CN207601394U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3796060B1 (en) | 2018-10-11 | 2022-12-28 | Fujikura Ltd. | Optical fiber cable |
| CN111965776A (en) * | 2020-09-04 | 2020-11-20 | 江苏亨通光电股份有限公司 | Spiral micro-groove type air-blowing micro-cable, manufacturing equipment and manufacturing method |
| WO2022048558A1 (en) * | 2020-09-04 | 2022-03-10 | 江苏亨通光电股份有限公司 | Air-blowing micro cable with spiral micro-flute, and manufacturing apparatus and manufacturing method therefor |
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