CN114019629B - Indoor and outdoor multifunctional combined optical cable - Google Patents
Indoor and outdoor multifunctional combined optical cable Download PDFInfo
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- CN114019629B CN114019629B CN202111202228.5A CN202111202228A CN114019629B CN 114019629 B CN114019629 B CN 114019629B CN 202111202228 A CN202111202228 A CN 202111202228A CN 114019629 B CN114019629 B CN 114019629B
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- optical cable
- optical
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- 230000003287 optical effect Effects 0.000 title claims abstract description 42
- 239000013307 optical fiber Substances 0.000 claims abstract description 113
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 27
- 239000000779 smoke Substances 0.000 claims abstract description 25
- 230000002787 reinforcement Effects 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 12
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/566—Devices for opening or removing the mantle
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/566—Devices for opening or removing the mantle
- G02B6/567—Devices for opening or removing the mantle for ribbon cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the technical field of optical cables, and particularly relates to an indoor and outdoor multifunctional combined optical cable which comprises an optical cable part and hanging wire parts arranged at two ends of the optical cable part; the optical cable part comprises a low-smoke halogen-free outer sheath, an optical fiber layer and a pair of optical fiber tape layers, wherein the optical fiber layer and the optical fiber tape layers are arranged in the low-smoke halogen-free outer sheath; the optical fiber layer comprises an optical fiber, the outer side of the optical fiber is coated with an invisible sheath, the upper end and the lower end of the optical fiber are provided with a pair of FRP reinforcing members with circular cross sections, the left end and the right end of the optical fiber are provided with a pair of FRP reinforcing members with flat cross sections, the optical fiber and the FRP reinforcing members are both arranged in an inner sheath, and the outer side of the inner sheath is coated with a water blocking belt; the optical fiber ribbon layer comprises an optical fiber ribbon and an FRP reinforcement, and the optical fiber ribbon and the FRP reinforcement are arranged in the rubber-covered wire inner sheath together; the suspension wire part comprises an optical fiber belt and FRP reinforcing members arranged on two sides of the optical fiber belt, the optical fiber belt and the FRP reinforcing members are arranged in an inner sheath together, and the outer side of the inner sheath is wrapped with a low-smoke halogen-free outer sheath. The invention can adapt to indoor and outdoor complex laying environments and multi-scene laying.
Description
Technical Field
The invention belongs to the technical field of optical cables, and particularly relates to an indoor and outdoor multifunctional combined optical cable.
Background
Due to the rapid development of the current 5G technology, various complex and various demands continuously appear, and a corresponding combined complex optical cable is designed according to the problem, so that the problems of interference and isolation between strong and weak currents can be effectively solved due to the research application and further general popularization of the composite optical cable technology. The television is enabled by the combination between different types of optical cables. The digital signals of telephone, internet and optical fiber can be transmitted by optical signals in optical fiber, and are not affected by electromagnetic field of power line and short circuit fault, so that the reliability, transmission rate and transmission quality of information transmission are greatly improved.
In 2016, the china broadcast network company continuously expands new services based on its stable customer base, including high definition television, video on demand, high speed internet surfing, smart home, cloud storage, etc. In order to meet the increasing network service, the FTTH method is adopted, and the FTTH has the remarkable technical characteristics of providing larger bandwidth, enhancing the transparency of the network to data formats, rates, wavelengths and protocols, relaxing the requirements on environmental conditions, power supply and other aspects, and simplifying maintenance and installation. The special property of the network system ensures that a plurality of optical fibers of different types are required to be introduced simultaneously when the optical fibers enter the home, and the network system is used for complex transmission environments such as data network transmission, television network transmission, 5G base station transmission and the like, and has the problems of complex laying environment, multi-scene laying, high bandwidth requirement, small bearing tension and the like.
Disclosure of Invention
The invention provides an indoor and outdoor multifunctional combined optical cable, which aims to adapt to indoor and outdoor complex laying environments and multi-scene laying.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an indoor and outdoor multifunctional combined optical cable comprises an optical cable part and hanging wire parts symmetrically arranged at two ends of the optical cable part;
the optical cable part comprises a low-smoke halogen-free outer sheath, an optical fiber layer and a pair of optical fiber tape layers, wherein the optical fiber layer and the optical fiber tape layers are arranged in the low-smoke halogen-free outer sheath;
the optical fiber layer comprises an optical fiber, the outer side of the optical fiber is coated with an invisible sheath, the upper end and the lower end of the optical fiber are provided with a pair of FRP reinforcing members with circular cross sections, the left end and the right end of the optical fiber are provided with a pair of FRP reinforcing members with flat cross sections, the optical fiber and the FRP reinforcing members are both arranged in an inner sheath, and the outer side of the inner sheath is coated with a water blocking belt;
the optical fiber ribbon layer comprises an optical fiber ribbon and an FRP reinforcement, and the optical fiber ribbon and the FRP reinforcement are arranged in the rubber-covered wire inner sheath together;
the suspension wire part comprises an optical fiber belt and a pair of FRP reinforcing members arranged on two sides of the optical fiber belt, the optical fiber belt and the pair of FRP reinforcing members are arranged in an inner sheath together, and the outer side of the inner sheath is wrapped with a low-smoke halogen-free outer sheath.
Further, the optical cable part further comprises two tearing ropes, the optical fiber layer and the optical fiber belt layer are arranged in the low-smoke halogen-free outer sheath together, and a pair of tearing grooves are arranged on the low-smoke halogen-free outer sheath.
Further, the optical fiber ribbon layers are symmetrically arranged with the optical fiber layer as a center.
Further, the arrangement direction of the optical fiber ribbons in the optical fiber ribbon layer is perpendicular to the arrangement direction of the FRP reinforcement with a flat cross section.
Further, the direction of arrangement of the optical fiber ribbon in the suspension wire portion is parallel to the direction of arrangement of the FRP reinforcement having a flat cross section.
Further, the tearing groove is a square groove.
Further, the suspension wire part is square.
Further, the invisible jacket is made of TPU material.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the pair of tearing grooves are arranged on the low-smoke halogen-free outer sheath, and the tearing grooves are square grooves, so that the problem of stripping during installation is effectively solved, and the damage of birds is effectively prevented.
(2) The fiber reinforced plastic cable comprises an optical fiber layer and an optical fiber tape layer, wherein the optical fiber in the optical fiber layer is provided with FRP reinforcing parts up and down and left and right, the optical fiber is protected in all directions, the cross section of the fiber reinforced plastic is provided with the FRP reinforcing parts in a flat shape, the tensile resistance of the optical fiber layer is greatly improved, meanwhile, the optical fiber layer is provided with a water blocking tape, the water blocking capacity of the optical fiber layer is improved, the outer side of the optical fiber is wrapped with an invisible sheath, and the invisible sheath is made of TPU materials, has good flame retardant property while being resistant to friction, and has good performances of tensile resistance, flame retardance, easy stripping, easy multi-scene laying and the like. In the laying process, different indoor and outdoor occasions can be respectively accessed according to scene requirements, so that a composite laying mode in a complex environment is realized, and the multifunctional optical cable with a very good development prospect is realized in a complex and changeable environment in the future.
Drawings
FIG. 1 is a cross-sectional view of an indoor and outdoor multifunctional composite fiber optic cable.
Wherein: 1-an optical fiber; 2-invisible sheath; 3-FRP reinforcement; 4-an optical fiber ribbon; 5-a rubber-covered wire inner sheath; 6-tearing the rope; 7-a low smoke halogen-free outer sheath; 8-tearing grooves; 9-water blocking tape.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in FIG. 1, an indoor and outdoor multifunctional combined optical cable comprises an optical cable part and hanging wire parts symmetrically arranged at two ends of the optical cable part;
the optical cable section includes a low smoke halogen-free outer sheath 7 and an optical fiber layer and a pair of optical fiber ribbon layers disposed within the low smoke halogen-free outer sheath 7.
The optical fiber layer comprises an optical fiber 1, an invisible sheath 2 is coated on the outer side of the optical fiber 1, a pair of FRP reinforcing members with circular cross sections are arranged at the upper end and the lower end of the optical fiber 1, a pair of FRP reinforcing members 3 with flat cross sections are arranged at the left end and the right end of the optical fiber 1, the optical fiber 1 and the FRP reinforcing members are arranged in an inner sheath, and a water blocking belt 9 is coated on the outer side of the inner sheath.
The optical fiber ribbon layer comprises an optical fiber ribbon 4 and an FRP reinforcement, and the optical fiber ribbon 4 and the FRP reinforcement are arranged in the rubber-insulated wire inner sheath 5 together;
the suspension wire part comprises an optical fiber belt and a pair of FRP reinforcing members arranged on two sides of the optical fiber belt, the optical fiber belt and the FRP reinforcing members are arranged in an inner sheath together, and the outer side of the inner sheath is wrapped with a low-smoke halogen-free outer sheath 7.
The optical cable part further comprises two tearing ropes 6, the optical fiber layer and the optical fiber layer are arranged in the low-smoke halogen-free outer sheath 7 together, and a pair of tearing grooves 8 are arranged on the low-smoke halogen-free outer sheath 7.
Example two
An indoor and outdoor multifunctional combined optical cable comprises an optical cable part and hanging wire parts symmetrically arranged at two ends of the optical cable part;
the optical cable part comprises a low-smoke halogen-free outer sheath 7, an optical fiber layer and a pair of optical fiber tape layers, wherein the optical fiber layer and the optical fiber tape layers are arranged in the low-smoke halogen-free outer sheath 7, and the optical fiber tape layers are symmetrically arranged by taking the optical fiber layer as a center.
The optical fiber layer comprises an optical fiber 1, an invisible sheath 2 is coated on the outer side of the optical fiber 1, the invisible sheath 2 is made of TPU materials, a pair of FRP reinforcing members with circular cross sections are arranged at the upper end and the lower end of the optical fiber 1, a pair of FRP reinforcing members 3 with flat cross sections are arranged at the left end and the right end of the optical fiber 1, the optical fiber 1 and the FRP reinforcing members are arranged in an inner sheath, and a water blocking belt 9 is coated on the outer side of the inner sheath.
The optical fiber ribbon layer comprises an optical fiber ribbon 4 and an FRP reinforcement, and the optical fiber ribbon 4 and the FRP reinforcement are arranged in the rubber-insulated wire inner sheath 5 together. The direction of arrangement of the optical fiber ribbons in the optical fiber ribbon layers is perpendicular to the direction of arrangement of the FRP reinforcement 3 having a flat cross section.
The hanging wire part is square, and the hanging wire part comprises an optical fiber belt and a pair of FRP reinforcing members arranged on two sides of the optical fiber belt, the optical fiber belt and the FRP reinforcing members are arranged in an inner sheath together, and the outer side of the inner sheath is wrapped with a low-smoke halogen-free outer sheath 7. The direction in which the optical fiber ribbon is arranged in the suspension wire portion is parallel to the direction in which the FRP reinforcement 3 having a flat cross section is arranged.
The optical cable part further comprises two tearing ropes 6, the optical fiber layer and the optical fiber layer are arranged in the low-smoke halogen-free outer sheath 7 together, a pair of tearing grooves 8 are arranged on the low-smoke halogen-free outer sheath 7, and the tearing grooves 8 are square grooves.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. An indoor and outdoor multifunctional combined optical cable is characterized in that: the cable comprises an optical cable part and suspension wire parts symmetrically arranged at two ends of the optical cable part;
the optical cable part comprises a low-smoke halogen-free outer sheath (7), an optical fiber layer and a pair of optical fiber tape layers, wherein the optical fiber layer and the optical fiber tape layers are arranged in the low-smoke halogen-free outer sheath (7);
the optical fiber layer comprises an optical fiber (1), an invisible sheath (2) is coated on the outer side of the optical fiber (1), a pair of FRP (fiber reinforced Plastic) reinforcing pieces with circular cross sections are arranged at the upper end and the lower end of the optical fiber (1), a pair of FRP reinforcing pieces (3) with flat cross sections are arranged at the left end and the right end of the optical fiber (1), the optical fiber (1) and the FRP reinforcing pieces are arranged in an inner sheath, and a water blocking belt (9) is coated on the outer side of the inner sheath;
the fiber ribbon layer comprises a fiber ribbon (4) and an FRP reinforcement, and the fiber ribbon (4) and the FRP reinforcement are arranged in the rubber-insulated wire inner sheath (5) together;
the suspension wire part comprises an optical fiber belt and a pair of FRP reinforcing members arranged on two sides of the optical fiber belt, the optical fiber belt and the FRP reinforcing members are arranged in an inner sheath together, and the outer side of the inner sheath is wrapped with a low-smoke halogen-free outer sheath (7).
2. The indoor and outdoor multifunctional combined optical cable according to claim 1, wherein: the optical cable part further comprises two tearing ropes (6), the optical fiber layer and the optical fiber layer are arranged in the low-smoke halogen-free outer sheath (7) together, and a pair of tearing grooves (8) are formed in the low-smoke halogen-free outer sheath (7).
3. The indoor and outdoor multifunctional combined optical cable according to claim 2, wherein: the optical fiber tape layers are symmetrically arranged with the optical fiber layers as centers.
4. The indoor and outdoor multifunctional combined optical cable according to claim 1, wherein: the arrangement direction of the optical fiber ribbon in the optical fiber ribbon layer is perpendicular to the arrangement direction of the FRP reinforcement (3) with the flat cross section.
5. The indoor and outdoor multifunctional combined optical cable according to claim 1, wherein: the arrangement direction of the optical fiber ribbon in the hanging wire part is parallel to the arrangement direction of the FRP reinforcement (3) with the flat cross section.
6. The indoor and outdoor multifunctional combined optical cable according to claim 2, wherein: the tearing groove (8) is a square groove.
7. The indoor and outdoor multifunctional combined optical cable according to claim 1, wherein: the hanging wire part is square.
8. The indoor and outdoor multifunctional combined optical cable according to claim 1, wherein: the invisible sheath (2) is made of TPU material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111202228.5A CN114019629B (en) | 2021-10-15 | 2021-10-15 | Indoor and outdoor multifunctional combined optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111202228.5A CN114019629B (en) | 2021-10-15 | 2021-10-15 | Indoor and outdoor multifunctional combined optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114019629A CN114019629A (en) | 2022-02-08 |
| CN114019629B true CN114019629B (en) | 2024-01-30 |
Family
ID=80056131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111202228.5A Active CN114019629B (en) | 2021-10-15 | 2021-10-15 | Indoor and outdoor multifunctional combined optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114019629B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384656B (en) * | 2022-03-01 | 2023-05-12 | 长飞光电线缆(苏州)有限公司 | Optical fiber ribbon cable with elastic wrapping cloth outer protective layer |
| CN115201980B (en) * | 2022-06-02 | 2024-02-23 | 宏安集团有限公司 | Super tensile composite optical cable |
| CN115128751B (en) * | 2022-07-25 | 2024-03-15 | 宏安集团有限公司 | Multi-scene composite wiring optical cable |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003322782A (en) * | 2002-05-08 | 2003-11-14 | Toyokuni Electric Cable Co Ltd | Optical communication trunk cable |
| CN101529297A (en) * | 2006-12-21 | 2009-09-09 | 康宁光缆系统有限公司 | Dry fiber optic cables and assemblies |
| CN104979050A (en) * | 2015-07-15 | 2015-10-14 | 长芯盛（武汉）科技有限公司 | Micro HDMI opto electric composite cable |
| CN106324779A (en) * | 2016-11-03 | 2017-01-11 | 北京亨通斯博通讯科技有限公司 | Special optical fiber ribbon cable for communication |
| CN107065096A (en) * | 2017-04-11 | 2017-08-18 | 李晓强 | A kind of double self-holding type optical fiber belt wiring optical cables |
| CN207301422U (en) * | 2017-09-06 | 2018-05-01 | 江苏南方通信科技有限公司 | A kind of nonmetallic anti-unfirmly closing optical cable of pancake |
| CN213338130U (en) * | 2020-09-25 | 2021-06-01 | 宏安集团有限公司 | Flat rat-proof and termite-proof lead-in optical cable |
-
2021
- 2021-10-15 CN CN202111202228.5A patent/CN114019629B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003322782A (en) * | 2002-05-08 | 2003-11-14 | Toyokuni Electric Cable Co Ltd | Optical communication trunk cable |
| CN101529297A (en) * | 2006-12-21 | 2009-09-09 | 康宁光缆系统有限公司 | Dry fiber optic cables and assemblies |
| CN104979050A (en) * | 2015-07-15 | 2015-10-14 | 长芯盛（武汉）科技有限公司 | Micro HDMI opto electric composite cable |
| CN106324779A (en) * | 2016-11-03 | 2017-01-11 | 北京亨通斯博通讯科技有限公司 | Special optical fiber ribbon cable for communication |
| CN107065096A (en) * | 2017-04-11 | 2017-08-18 | 李晓强 | A kind of double self-holding type optical fiber belt wiring optical cables |
| CN207301422U (en) * | 2017-09-06 | 2018-05-01 | 江苏南方通信科技有限公司 | A kind of nonmetallic anti-unfirmly closing optical cable of pancake |
| CN213338130U (en) * | 2020-09-25 | 2021-06-01 | 宏安集团有限公司 | Flat rat-proof and termite-proof lead-in optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114019629A (en) | 2022-02-08 |
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