CN103558672A - Three-unit unidirectional spiral stranded layer stranded optical cable - Google Patents
Three-unit unidirectional spiral stranded layer stranded optical cable Download PDFInfo
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- CN103558672A CN103558672A CN201310580972.8A CN201310580972A CN103558672A CN 103558672 A CN103558672 A CN 103558672A CN 201310580972 A CN201310580972 A CN 201310580972A CN 103558672 A CN103558672 A CN 103558672A
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- optical cable
- stranded
- layer
- sleeve pipe
- loose sleeve
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Abstract
The invention provides a three-unit unidirectional spiral stranded layer stranded optical cable. The technical scheme is that a reinforced core is arranged at the center of the optical cable, three loose tubes are used for wrapping the reinforced core on the periphery of the reinforced core in a unidirectional spiral stranded mode and two parallel steel wires are installed in an outer protection sleeve. Thus, the overall performance of the optical cable is improved and materials in manufacturing the optical cable are saved.
Description
Technical field
The invention relates to a kind of improved layer-stranding cable.
Background technology
Optical cable is widely used in network communication at present.Optical cable can be divided into central beam tube type and layer-stranding cable structure.In central-beam tube type fiber optic cable, owing to only having the fine loose sleeve pipe of giving out light, the remaining length of optical cable is just inevitable less like this.And owing to plaing, the diameter of two parallel steel wires of stretch-proof effect is larger, makes the size of optical cable also larger, and this just makes the bending property of optical cable poor.And in SZ layer-stranding cable, conventionally adopt spiral bidirectional mode stranded, between stranded so loose sleeve pipe, be easy to become flexible, therefore need to use yarn colligation pine sleeve pipe, but the bad control of tension force due to colligation yarn, do not do a good job and will damage loose sleeve pipe, so loose casing diameter is just compelled to do greatlyr, corresponding, and the strengthening core in the middle of several loose sleeve pipes also must be done slightlyer.The diameter of optical cable also increases naturally like this.The bending property of optical cable must be affected.The starting material that drop into also will increase.
Summary of the invention
The problem that the invention will solve be take layer-stranding cable as basis the deficiency on central beam tube type and two kinds of cable configurations of layer-twisted type is comprehensively improved, compare with the optical cable of existing same specification, bending property is better, is especially for small size optical cable.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is: a kind of layer-stranding cable, include loose sleeve pipe, optical fiber, fine cream, cable cream, outer jacket, sheath, at the center of optical cable, have a strengthening core, at strengthening core around with three loose sleeve pipes in the unidirectional stranded mode of spiral by strengthening core around getting up.Between pine sleeve pipe and sheath, be filled with cable cream, in loose sleeve pipe, put into optical fiber, and fill fine cream in loose sleeve pipe.
According to optical cable tensile, stretch the needs of requirement, if desired, can in the oversheath of layer-stranding cable, lay two parallel steel wires.
The advantage that the invention has with good effect is: compare with the layer-stranding cable of existing same size, owing to being wound around the mode of loose sleeve pipe, be that spiral is unidirectional stranded, without yarn, bundle like this, can not make loose sleeve pipe produce loosening yet, so just reduced the damage that yarn may cause loose sleeve pipe colligation tension, and the potential risk that affects optical fiber property, also saved space and material simultaneously.In addition owing to adopting three loose sleeve structures, with respect to the structure of how loose sleeve pipe, between three loose sleeve pipes, the sectional area in space is minimum, and the diameter of strengthening core can be done minimumly, the diameter of pine sleeve pipe also can be done littlely, and the diameter of corresponding like this optical cable has also reduced.Therefore the bending property of optical cable can further be improved.In addition compare with the central-beam tube type fiber optic cable of same size, remaining length has also obtained further improvement.In a word, the invention had both improved the performance of optical cable, had saved again material and the size of manufacturing optical cable.
Accompanying drawing explanation
Fig. 1 is the invention optical cable cross sectional representation.
In figure: 1, optical fiber 2, fine cream 3, loose sleeve pipe 4, strengthening core 5, parallel steel wire 6, cable cream 7, sheath 8, outer jacket
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is elaborated.
Three loose sleeve pipes 3 are wrapped in around a strengthening core 4 in one-way spiral mode, the diameter of every loose sleeve pipe 3 is 1.5mm, in every loose sleeve pipe 3, be placed with 12 optical fiber 1, the material of loose sleeve pipe 3 is polybutylene terephthalate, and each loose sleeve pipe 3 is interior has filled fine cream 2.At loose sleeve pipe 3 overcoats, have inner sheath 7 and oversheath 8, inner sheath 7 is fold steel band, and oversheath 8 is made by tygon or bittern-free flame-proof material, between loose sleeve pipe 3 and inner sheath 7, with cable cream 6, fills.If need further to strengthen the stretch-resistance of optical fiber, can in oversheath 8, symmetry add two parallel steel wires 5, the diameter of parallel steel wire 5 can, according to the composite request of bendability and stretch-resistance is adjusted, generally be less than the parallel steel wire diameter in unidimensional central-beam tube type fiber optic cable.
Above the embodiment of the invention is had been described in detail, but described content is only the preferred embodiment of the invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the invention scope and improvement etc., within all should still belonging to this patent covering scope.
Claims (4)
1. a layer-stranding cable, includes loose sleeve pipe, optical fiber, fine cream, strengthening core, cable cream, outer jacket, sheath, it is characterized in that: described loose sleeve pipe has three, and these three loose sleeve pipes are stranded in around strengthening core with spiral one way system.
2. layer-stranding cable according to claim 1, is characterized in that: in outer jacket, be placed with two parallel steel wires that distribute with optical cable Central Symmetry.
3. layer-stranding cable according to claim 1, is characterized in that: loose casing diameter is 1.2～1.5mm.
4. layer-stranding cable according to claim 1, is characterized in that: described every loose sleeve pipe inner fiber number is no more than 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310580972.8A CN103558672A (en) | 2013-11-15 | 2013-11-15 | Three-unit unidirectional spiral stranded layer stranded optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310580972.8A CN103558672A (en) | 2013-11-15 | 2013-11-15 | Three-unit unidirectional spiral stranded layer stranded optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103558672A true CN103558672A (en) | 2014-02-05 |
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ID=50012972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310580972.8A Pending CN103558672A (en) | 2013-11-15 | 2013-11-15 | Three-unit unidirectional spiral stranded layer stranded optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103558672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062728A (en) * | 2014-06-23 | 2014-09-24 | 江苏亨通光电股份有限公司 | Micro-beam-tube easily-branched optical cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533136A (en) * | 2009-04-28 | 2009-09-16 | 天津市立孚光电线缆开发有限公司 | Lightning protection layer stranded optical cable |
| CN202771070U (en) * | 2012-08-23 | 2013-03-06 | 广东亨通光电科技有限公司 | Central core tube-type optical fiber |
| CN102955210A (en) * | 2011-08-22 | 2013-03-06 | 天津市立孚光电线缆开发有限公司 | Improved central tube type optical cable |
| CN203643652U (en) * | 2013-11-15 | 2014-06-11 | 天津长飞鑫茂光缆有限公司 | A three-unit unidirectional spiral intertwist layer intertwist type optical cable |
-
2013
- 2013-11-15 CN CN201310580972.8A patent/CN103558672A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533136A (en) * | 2009-04-28 | 2009-09-16 | 天津市立孚光电线缆开发有限公司 | Lightning protection layer stranded optical cable |
| CN102955210A (en) * | 2011-08-22 | 2013-03-06 | 天津市立孚光电线缆开发有限公司 | Improved central tube type optical cable |
| CN202771070U (en) * | 2012-08-23 | 2013-03-06 | 广东亨通光电科技有限公司 | Central core tube-type optical fiber |
| CN203643652U (en) * | 2013-11-15 | 2014-06-11 | 天津长飞鑫茂光缆有限公司 | A three-unit unidirectional spiral intertwist layer intertwist type optical cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062728A (en) * | 2014-06-23 | 2014-09-24 | 江苏亨通光电股份有限公司 | Micro-beam-tube easily-branched optical cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140205 |