CN201845113U - Circular fiber-to-home indoor optical cable - Google Patents
Circular fiber-to-home indoor optical cable Download PDFInfo
- Publication number
- CN201845113U CN201845113U CN2010205454351U CN201020545435U CN201845113U CN 201845113 U CN201845113 U CN 201845113U CN 2010205454351 U CN2010205454351 U CN 2010205454351U CN 201020545435 U CN201020545435 U CN 201020545435U CN 201845113 U CN201845113 U CN 201845113U
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- transmission conductor
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- light transmission
- optical cable
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Abstract
A circular fiber-to-home indoor optical cable is characterized in that an outer sheath layer is coated outside an optical transmission conductor and strengthening structures. The section of the optical cable is circular, the optical transmission conductor, namely an optical fiber, which is coated by a lapping structure, is arranged at the center of the section, two strengthening structures extending in a manner parallel to the optical transmission conductor are respectively arranged on portions of the outer sheath layer on two l sides of the optical transmission conductor in a radial direction, and tearing slot structures recessed inwards from the outer circumference are respectively on two sides of the optical transmission conductor in another radial direction. The optical cable is compact in structure, fine in side pressure resistance and easy to be matched with a commercial tail sleeve fixedly, has simple joint components, has the advantages of protecting the optical fiber, high-precision size stability, and guarantees return loss and insertion loss of a butting fiber.
Description
Technical field
The utility model relates to a kind of circular covered wire cable of easy-stripping type optical cable, particularly a kind of easily stripped.
Background technology
Along with fiber-to-the-home continuous propelling, original use aramid yarn can not satisfy the needs of house wiring well as the circular inside cable of the tight tube structure of reinforcing element, major defect is the not anti-retraction element of this class optical cable, and anti-side pressure ability is relatively poor, derives a kind of inside cable of butterfly thus.The covered wire cable of this butterfly has anti-retraction element, good anti-side pressure performance, and good tensile property is opened stripping easily, is fit to the wiring of interior conduit and clip slot.But extensive application along with wiring, find that still there are certain defective in butterfly structure and technique for fixing thereof: at first the butterfly optical cable cross section is square or rectangle mostly, therefore when the optical cable poling, the contact area of itself and adjacent structure (tube wall and/or other optical cable) is big, bigger friction tension is arranged, particularly relatively fill under the situation of gathering around at pipeline, the accumulation of friction tension causes that fiber cable laying tension force increases, and causes and lays difficulty.On the other hand, its side (square) shape structure and optical fiber thereof are on the tail end of optical cable is handled, and difficult all the time have suitable element and method to fix, all directions stressed all the time and each to discontinuity equalization, caused certain splicing loss.Because the draw-in groove fixed form that adopts has determined that the dimensional requirement of optical cable is very accurate at present, if size is big slightly, to bigger side pressure be arranged to optical cable at the draw-in groove place, and the snap-in force of all directions is inconsistent: size hour, the draw-in groove place does not have enough tension force constraint optical cables, optical cable is vertically stressed easily at tail end, causes optic fibre force, when serious even break optical fiber.Though optical fiber can pass through V-type groove good location, optical fiber is in a kind of pressurized process all the time, the big young pathbreaker of tail end return loss since when construction fixation case fluctuate, have influence on the operation of circuit like this.On the other hand, optical cable need keep certain directivity before draw-in groove is fixing, but need coil at terminal optic cable and to stay one very in the narrow space, and optical cable itself has antitorque commentaries on classics element, optical cable exists inevitably when entering draw-in groove and reverses like this, this optic fibre turning that might drive in the optical cable that reverses is unfavorable for that optical fiber enters the stability after the V-type groove is fixed.
The utility model content
At above-mentioned situation, the utility model provides a kind of circular optical cable of easy-stripping type, can address the above problem satisfactorily.
The utility model round fiber is to be coated with external sheath layer at light transmission conductor and reinforcement structure to the basic structure of family inside cable equally.Wherein, the cross section of this optical cable is circular, and the light transmission conductor that wraps optical fiber by the hard-pressed bale structure is positioned at the center in cross section.Respectively be provided with a reinforcement structure that extends in parallel with the light transmission conductor in the both sides of its radial direction; External sheath layer position in another radial direction both sides of light transmission conductor respectively is provided with a tearing groove structure that is inwardly concaved by outer peripheral face.
In the above-mentioned circular optical cable in the said light transmission conductor core number of optical fiber generally can be single core or twin-core, can be the tight tube fiber of band tight sleeve layer.The tight sleeve layer material can be the low-smoke halogen-free polyolefin material, or high oxygen index Polyvinylchloride, or UV solidifies painted methacrylic resin.When the twin-core core that adopts is counted optical fiber, each optical fiber is outer except that can adopting true qualities optical fiber, can also adopt by present usual manner and be coated with the colored optical fiber that phase region wears chromatograph respectively, coloured material can be that 5～15 microns UV solidifies painted methacrylic resin etc. for thickness.
Said reinforcement structure, its material can be such as the nonmetal reinforced wire of the such high strength of aramid yarn, also can be the nonmetal reinforcement bar by high-dimensional stability, strengthen rod (GRP) etc. as glass fibre, can also be the high corrosion-resistant steel wire of tensile strength etc.Specifically can decide by the requirement of environment for use with to mechanics requirement of optical cable etc.
The material of said external sheath layer, generally preferably low-smoke halogen-free polyolefin material, high oxygen index Polyvinylchloride, flame-proof thermoplastic polyurethane sheath, and optical fibre core should not stick together with above sheath material, in order to avoid influence the decay index of optical cable.For preventing locking structure optical fiber and sheath adhesion, outside optical fibre core, can apply the lubricated wet goods preventing viscosity substance of talcum powder or heatproof.
Based on said structure, further preferred property improvement also can comprise following one or multinomial respectively:
Said being somebody's turn to do strengthened structure, adopts to be symmetrical arranged about the light transmission conductor in the radial direction the same of light transmission conductor;
Said tearing groove structure adopts edge and the perpendicular radial direction setting of direction of strengthening structure place diameter;
It is trapezoidal or rectangular-shaped that the cross section of said tearing groove structure is.
The circular optical cable of the utility model said structure form is not only apparent variation, but the improvement that the problem that exists in the butterfly covered wire cable at currently reported and/or use is made and perfect.
Tearing groove structure in the above-mentioned round section structure of the utility model optical cable, not only be convenient to cable jacket and can be torn by hand easily, be easier to use specific purpose tool commonly used at present such as wire-stripping pliers (as special covered wire cable wire-stripping pliers etc.) to strip out sheath and do not injure optical fiber in the optical cable in terminal.The size of tearing groove and the size of circular optical cable can be decided according to employed fiber number size.For example, optical cable is of a size of 3.0 millimeters, and the fiber number that uses is 900 microns tight sleeve optic cables, and the size of tearing groove can be the rectangle or the trapezoidal shape structure of (0.5～0.8) * (0.5～0.8); Cable size is 3.0 millimeters, and the fiber number that uses is when being 250 microns tight sleeve optic cables, and the size of tearing groove can be (0.6～0.9) * (0.6～0.9).
The optical cable of round section all is contacting of point (line) between optical cable and adjacent structures such as tube wall, conduit or other optical cable when poling and conduit lay, and surface of contact has reduced friction force for a short time, is convenient to poling or lays.When need are handled with band, its all directions are stressed evenly, guaranteed optical fiber all directions in the optical cable stressed evenly.And the optical cable of circular configuration can be fixing with commercial tail cover, and reinforcement can also be fixed in the commercial crimp rings, and the optical fiber in the optical cable can be fixed by the gluing ceramic insertion core that is specifically designed to optical fiber distribution frame with outside plant that passes.And the fixing mode of this ceramic insertion core viscose glue has been passed through the test of many decades, proves that it has good stable.It is bonding that optical fiber in the optical cable is subjected to annular epoxy glue; existing certain stretching resistance; crimp rings in the tail cover can directly compress reinforcing element can provide bigger pulling force; making whole fibre-optical splice in loading process, at first is that the crimp rings place is stressed, after crimp rings reaches certain value; optical fiber in the lock pin just begins stressed; reached the purpose of protection optical fiber, fiber stub has the high precision dimensional stability simultaneously, thereby has guaranteed the return loss and the Insertion Loss of butt joint optical fiber.
Below in conjunction with embodiment, foregoing of the present utility model is described in further detail again by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model round fiber to the family inside cable.
Fig. 2 is the another kind of structural representation of the utility model round fiber to the family inside cable.
Embodiment
Fig. 1 is a kind of version of the utility model round fiber to the family inside cable.The cross section of optical cable is rounded, external diameter is 3.0 millimeters.The light transmission conductors such as single-core fiber of one 250 micron optical fiber 1 form that is wrapped by Polyvinylchloride hard-pressed bale layer 2 are positioned at the center in its cross section, respectively are provided with the reinforcement structure 3 of a nonmetal glass fibre stirrup form that extends in parallel with the light transmission conductor on an one diametric symmetria bilateralis ground.These structures all are embedded among the low-smoke halogen-free polyolefin external sheath layer 4.With external sheath layer 4 positions of perpendicular another radial direction both sides of the diametric(al) of strengthening structure 3 places, respectively offer symmetrically one by outer peripheral face inwardly concave, the cross section is trapezoidal or rectangular-shaped tearing groove structure 5.This optical cable is soft, can bear the unwrapping wire requirement of 100 meters this class optical cable wirings.
Fig. 2 is the another kind of version of the utility model round fiber to the family inside cable, basic structure and Fig. 1's is similar, difference is that the optical fiber 1 in the light transmission conductor is 250 micron optical fibers of two parallel placements, and is distinguished by the dyed layer 6 of different colours.Strengthen the high-tensile steel wires that structure 3 can adopt plated copper structure.The external diameter of optical cable is 2.4 millimeters, and can be mainly used in needs twin-core as in transmission Fiber to the home in the loop network, and can directly adopt existing MT-RJ connector assembly, can coil in the optical fiber terminal box of staying higher application of temperature and use.
Claims (6)
1. round fiber is to the family inside cable, be coated with external sheath layer at light transmission conductor and reinforcement structure, the cross section that it is characterized in that this optical cable is for circular, the light transmission conductor that wraps optical fiber (1) by hard-pressed bale layer structure (2) is positioned at the center in cross section, respectively be provided with a reinforcement structure (3) that extends in parallel with the light transmission conductor in the both sides of its radial direction, respectively be provided with a tearing groove structure (5) that inwardly concaves by outer peripheral face at external sheath layer (4) position of another radial direction both sides of light transmission conductor.
2. round fiber as claimed in claim 1 is characterized in that to the family inside cable said reinforcement structure (3) is for to be symmetrical arranged about the light transmission conductor in the radial direction the same of light transmission conductor.
3. round fiber as claimed in claim 2 is characterized in that said tearing groove structure (5) edge and the perpendicular radial direction setting of direction of strengthening structure (3) place diameter to the family inside cable.
4. round fiber as claimed in claim 1 is characterized in that to the family inside cable cross section of said tearing groove structure (5) is trapezoidal or rectangular-shaped.
5. arrive the family inside cable as the described round fiber of one of claim 1 to 4, the core number that it is characterized in that optical fiber (1) in the said light transmission conductor is single core or twin-core.
6. round fiber as claimed in claim 5 is to the family inside cable, when the core number that it is characterized in that optical fiber (1) in the said light transmission conductor is twin-core, and outer other dyed layer of phase region (6) that is coated with of each optical fiber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205454351U CN201845113U (en) | 2010-09-28 | 2010-09-28 | Circular fiber-to-home indoor optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205454351U CN201845113U (en) | 2010-09-28 | 2010-09-28 | Circular fiber-to-home indoor optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845113U true CN201845113U (en) | 2011-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205454351U Expired - Lifetime CN201845113U (en) | 2010-09-28 | 2010-09-28 | Circular fiber-to-home indoor optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845113U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819079A (en) * | 2012-08-17 | 2012-12-12 | 苏州南智传感科技有限公司 | Tight tube optical fiber grating serial sensing optical cable |
| CN102955211A (en) * | 2011-08-26 | 2013-03-06 | 上海宽岱电讯科技发展有限公司 | Combined butterfly-shaped optical cable |
| CN103353654A (en) * | 2013-06-18 | 2013-10-16 | 成都亨通光通信有限公司 | Distortion-resistance-type butterfly-shape optical cable |
| CN103383486A (en) * | 2013-08-07 | 2013-11-06 | 江苏中天科技股份有限公司 | Armored pipeline butterfly optical cable and production method thereof |
| WO2016179925A1 (en) * | 2015-05-12 | 2016-11-17 | 江苏中天科技股份有限公司 | Low-smoke halogen-free flame-retardant low-friction butterfly-shaped access optical cable |
| CN109856744A (en) * | 2019-03-11 | 2019-06-07 | 广东雅信通信息科技有限公司 | A kind of intelligent dual-purpose optical cable of industry control |
| CN111983762A (en) * | 2020-09-03 | 2020-11-24 | 江苏中天科技股份有限公司 | Optical cable and preparation method thereof |
-
2010
- 2010-09-28 CN CN2010205454351U patent/CN201845113U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955211A (en) * | 2011-08-26 | 2013-03-06 | 上海宽岱电讯科技发展有限公司 | Combined butterfly-shaped optical cable |
| CN102955211B (en) * | 2011-08-26 | 2014-10-29 | 上海宽岱电讯科技发展有限公司 | Combined butterfly-shaped optical cable |
| CN102819079A (en) * | 2012-08-17 | 2012-12-12 | 苏州南智传感科技有限公司 | Tight tube optical fiber grating serial sensing optical cable |
| CN103353654A (en) * | 2013-06-18 | 2013-10-16 | 成都亨通光通信有限公司 | Distortion-resistance-type butterfly-shape optical cable |
| CN103383486A (en) * | 2013-08-07 | 2013-11-06 | 江苏中天科技股份有限公司 | Armored pipeline butterfly optical cable and production method thereof |
| WO2016179925A1 (en) * | 2015-05-12 | 2016-11-17 | 江苏中天科技股份有限公司 | Low-smoke halogen-free flame-retardant low-friction butterfly-shaped access optical cable |
| CN109856744A (en) * | 2019-03-11 | 2019-06-07 | 广东雅信通信息科技有限公司 | A kind of intelligent dual-purpose optical cable of industry control |
| CN111983762A (en) * | 2020-09-03 | 2020-11-24 | 江苏中天科技股份有限公司 | Optical cable and preparation method thereof |
| CN111983762B (en) * | 2020-09-03 | 2021-10-01 | 江苏中天科技股份有限公司 | Optical 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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |