CN114280740A - Flexible optical fiber line and manufacturing method thereof - Google Patents
Flexible optical fiber line and manufacturing method thereof Download PDFInfo
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- CN114280740A CN114280740A CN202110693025.4A CN202110693025A CN114280740A CN 114280740 A CN114280740 A CN 114280740A CN 202110693025 A CN202110693025 A CN 202110693025A CN 114280740 A CN114280740 A CN 114280740A
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Abstract
本发明公开了一种柔性光纤线及其制作方法，所述柔性光纤线包括长条状的柔性轴芯和至少一线材，轴芯外部设置线材定位部，该线材定位部形成至少一螺旋凹槽，线材装在螺旋凹槽内，以构成螺旋状；所述线材包括光纤。本发明采用螺旋凹槽容纳至少包括光纤的线材，能够利用螺旋凹槽保护光纤，避免光纤在柔性线体外呈突兀状，从而使光纤的侧向抗压能力和轴向抗摩擦能力大大提高，光纤在使用过程中不易断裂。
The invention discloses a flexible optical fiber cable and a manufacturing method thereof. The flexible optical fiber cable comprises a long flexible shaft core and at least one wire rod. A wire rod positioning part is arranged outside the shaft core, and the wire rod positioning part forms at least one helical groove. , the wire is installed in the helical groove to form a helical shape; the wire includes an optical fiber. The invention adopts the helical groove to accommodate the wire at least including the optical fiber, can use the helical groove to protect the optical fiber, avoid the optical fiber from being abrupt outside the flexible wire, so that the lateral compression resistance and axial friction resistance of the optical fiber are greatly improved. Not easy to break during use.
Description
Technical Field
The invention relates to the technical field of optical fibers, in particular to a flexible optical fiber wire and a manufacturing method thereof.
Background
Optical fibers are short for optical fibers, and are fibers made of glass or plastic that can be used as a light conducting means. The optical fiber has the advantages of large information capacity, good confidentiality, light weight, small volume, long transmission distance and the like, and is widely applied to the industries of communication, traffic, industry, medical treatment, education, aerospace, computers and the like. The application of optical fibers is bringing about profound influences and changes to human lives. The conventional optical fiber cable generally includes an optical fiber filament (i.e. a bare fiber) and an insulating coating wrapped around the optical fiber filament, and the bending radius (also called bending radius) of the optical fiber filament, i.e. the bending radius of the optical fiber filament, of the optical fiber cable is generally recommended to be about 30 mm. Thus, the conventional optical fiber wire has poor bending resistance. In order to solve the problem that the conventional optical fiber wire is not resistant to bending, some optical fibers are woven, which solves the problem that the optical fiber wire is not resistant to bending, but also has the following problems: the woven optical fiber has too small weaving distance and is difficult to adjust, so that the optical power loss is large. Some adopt spiral winding's mode to optic fibre, this has also solved the problem that traditional optic fibre line is not able to bear or endure to buckle, and winding pitch can be regulated and control, can guarantee that the optical power loss of optic fibre reaches minimum, nevertheless also has following not enoughly: the optical fiber line has weak compression resistance and friction resistance, because the optical fiber is in a sharp shape on the outer side surface of the central line body, and the optical fiber is very fragile, and even if the optical fiber is protected by the outer sheath, the optical fiber is difficult to bear certain lateral pressure or axial friction force, so that the optical fiber is easy to break under compression.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a compression-resistant and friction-resistant flexible optical fiber wire and a manufacturing method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: a flexible optical fiber line comprises a strip-shaped flexible shaft core and at least one wire material, wherein a wire material positioning part is arranged outside the shaft core, at least one spiral groove is formed in the wire material positioning part, and the wire material is arranged in the spiral groove to form a spiral shape; the wire includes an optical fiber.
Further, the wire positioning part is a positioning sleeve arranged outside the shaft core, and the outer side surface of the positioning sleeve is provided with the spiral groove.
Furthermore, the number of the locating sleeves is multiple, the locating sleeves are fixedly connected one by one along the length direction of the shaft core, at least one spiral groove is formed in the outer side surface of each locating sleeve, and the spiral grooves of adjacent locating sleeves are in butt joint end to end.
Further, the positioning sleeve is sleeved outside the shaft core, or the positioning sleeve is injected outside the shaft core; the flexible sleeve is made of plastic or rubber or silica gel.
Further, the wire positioning portion is formed of a long piece spirally wound around the outside of the core, the long piece is spirally wound to form a spiral thread, and the spiral groove is formed at an interval between adjacent spiral threads.
Further, the elongate member is a flexible band or a flexible cord or a flexible tube.
Further, still including setting up the inoxidizing coating of axle core, wire rod location portion and wire rod, this inoxidizing coating includes any one or several kinds in insulating sheath, metal mesh, fibre web, the spraying layer.
Further, the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapping the bare fiber; and/or the wire further comprises a conductor.
Further, the shaft core comprises a load-bearing wire core and a core sleeve arranged outside the load-bearing wire core; the load-bearing wire core comprises one or more of nylon wire, cotton thread, bulletproof wire, fiber wire and conductor.
The invention also provides a manufacturing method of the flexible optical fiber wire, which comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing a positioning sleeve with at least one spiral groove on the outer side surface, wherein the positioning sleeve is positioned outside the shaft core;
3) a wire including at least an optical fiber is fitted in the spiral groove to form a spiral shape.
The invention also provides a manufacturing method of the flexible optical fiber wire, which comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing or selecting a long condition, spirally winding the long strip outside the shaft core, forming spiral threads on the long strip through spiral winding, and forming spiral grooves at intervals between adjacent spiral threads;
3) a wire including at least an optical fiber is fitted in the spiral groove to form a spiral shape.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the spiral groove to accommodate the wire rod at least comprising the optical fiber, can utilize the spiral groove to protect the optical fiber, avoids the optical fiber from presenting a sharp shape outside the flexible wire body, greatly improves the lateral pressure resistance and the axial friction resistance of the optical fiber, and ensures that the optical fiber is not easy to break in the using process.
2. The spiral groove is formed by arranging the outer side surface of the positioning sleeve, or the spiral groove is formed by spirally winding a long strip piece outside the shaft core, so that the forming process of the spiral groove is simpler. Particularly, the number of the positioning sleeves is multiple, the positioning sleeves are fixedly connected one by one along the length direction of the shaft core, and the processing difficulty of the positioning sleeves with spiral grooves can be reduced.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the flexible optical fiber line and the method for manufacturing the same according to the present invention are not limited to the embodiments.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of the present invention (without a protective layer);
FIG. 2 is an enlarged schematic view of a portion A of FIG. 1 according to an embodiment;
FIG. 3 is a schematic perspective view of a second embodiment of the present invention (including a protective layer);
FIG. 4 is a schematic perspective view of a first embodiment of the present invention (without a protective layer);
FIG. 5 is an enlarged view of the portion B in FIG. 4 according to the second embodiment;
FIG. 6 is a schematic perspective view of a second embodiment of the present invention (including a protective layer);
the optical fiber module comprises an optical fiber 1, an optical fiber 2, a shaft core 21, a bearing wire core 22 and a core sleeve; 3. spiral groove, 4, position sleeve, 5, insulating sheath, 6, flexible band.
Detailed Description
Example one
Referring to fig. 1-3, a flexible optical fiber cable according to the present invention includes a strip-shaped flexible core 2 and at least one wire, wherein a wire positioning portion is disposed outside the core 2, the wire positioning portion forms at least one spiral groove 3, and the wire includes an optical fiber 1, which is installed in the spiral groove 3 to form a spiral shape. Specifically, the wire is the optical fiber 1, and therefore, the optical fiber 1 is accommodated in the spiral groove 3 and has a spiral shape. In other embodiments, the wire may include a conductor or the like, in addition to the optical fiber, which is stranded with the optical fiber, so that the present invention constitutes an opto-electric composite wire.
In this embodiment, the optical fiber 1 may be a bare fiber or may include an outer coating (i.e., the optical fiber 1 includes a bare fiber and an outer coating covering the bare fiber). The number of the spiral grooves 3 is specifically one, but not limited thereto, and in other embodiments, the number of the spiral grooves is several, for example, two or more, and correspondingly, the number of the wires (i.e., the optical fibers) is also several, and the number of the wires corresponds to one of the spiral grooves. Therefore, the invention can realize the parallel spiral winding of a plurality of wires (namely optical fibers), so that the invention can be simultaneously connected with a plurality of groups of different devices, and the problem that one wire is inconvenient to transmit multipath signals of different types is solved.
In the embodiment, the ratio of the pitch of the optical fiber 1 to the diameter of the wire body formed by the shaft core 2 and the wire positioning part (namely, the outer diameter of the wire positioning part) is 4.5-20: 1. Specifically, the thread pitch of the optical fiber 1 is 10-30 mm, and the diameter of a line body formed by the shaft core 2 and the wire positioning part is 1.5-4 mm. For example, when the diameter of the wire body constituted by the shaft core 2 and the wire positioning portion is 4mm, the winding pitch of the optical fiber 1 is about 18 mm; when the diameter of a wire body formed by the shaft core 2 and the wire positioning part is 2mm, the thread pitch of the optical fiber 1 is about 20 mm; when the diameter of the wire body formed by the shaft core 2 and the wire positioning part is 1.5mm, the winding pitch of the optical fiber 1 is about 30 mm. Thus, the present invention can ensure that the optical power loss of the optical fiber 1 in the spirally wound state is minimized.
In this embodiment, the wire positioning portion is a positioning sleeve 4 disposed outside the shaft core 2, and the outer side surface of the positioning sleeve 4 is provided with the spiral groove 3. Specifically, the locating sleeve 4 is sleeved outside the shaft core 2, the number of the locating sleeves 4 is preferably multiple, the locating sleeves 4 are fixedly connected one by one along the length direction of the shaft core 2, at least one spiral groove 3 is arranged on the outer side surface of each locating sleeve 4, and the spiral grooves 3 of the adjacent locating sleeves 4 are in butt joint end to end. When the number of the spiral grooves on each positioning sleeve is a plurality, the spiral grooves are distributed in parallel. The adjacent ends of the adjacent positioning sleeves 4 can be fixed in a bonding or buckling connection or inserting mode and the like. Because the plurality of positioning sleeves 4 take the shaft core 2 as a carrier, the invention has certain tensile capacity, and particularly, the shaft core 2 can be made of a material with better tensile performance so as to further improve the tensile capacity of the invention. The locating sleeve 4 is made of plastic or rubber or silica gel and can be formed in an injection molding mode. In other embodiments, the locating sleeve is injection molded directly over the core.
In this embodiment, the present invention further includes a protective layer disposed outside the shaft core 2, the wire positioning portion (i.e., the positioning sleeve 4), and the wire (i.e., the optical fiber 1), and the outer diameter of the protective layer is 2-10 mm. The protective layer is specifically an extruded insulating sheath 5, but is not limited thereto, and in other embodiments, the protective layer is any one or a combination of metal mesh, fiber mesh, spray coating and the like.
In this embodiment, the axial core 2 includes a load-bearing wire core 21 and a core sleeve 22 disposed outside the load-bearing wire core 21. The load-bearing wire core 21 may be a metal wire and/or a non-metal wire, specifically, the load-bearing wire core 21 includes one or more of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire, and the like, and when the load-bearing wire core 21 includes several of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire, and the like, the several are combined into one strand. The load-bearing wire core 21 can bear load and can improve the bending resistance of the cable. The core sleeve 22 may be made of metal or nonmetal. The load-bearing wire core 21 can be of a single core type or a multi-core type. In other embodiments, the core is a unitary piece and is solid or hollow. The shaft cores can be single-core type or multi-core type, namely the number of the shaft cores is multiple, and the multiple shaft cores are combined into a bundle.
The invention discloses a method for manufacturing a flexible optical fiber line, which comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing a positioning sleeve with at least one spiral groove on the outer side surface, and sleeving the positioning sleeve on the shaft core; or, a positioning sleeve with at least one spiral groove on the outer side surface is formed on the shaft core in an injection molding mode;
3) installing a wire including at least an optical fiber in the spiral groove to form a spiral shape;
4) and manufacturing a protective layer, wherein the protective layer is positioned outside the shaft core, the positioning sleeve and the wire.
In this embodiment, the number of the positioning sleeves is plural, in the step 2), after the manufacturing of each positioning sleeve is completed by adopting an injection molding mode, the plurality of positioning sleeves are sleeved outside the shaft core one by one, the spiral grooves of the adjacent positioning sleeves are butted end to end, and the adjacent ends of the adjacent positioning sleeves are fixed by adopting bonding or buckling connection or butt-inserting and other modes.
In this embodiment, the protective layer is an insulating sheath, and in step 4), the insulating sheath is manufactured by an extrusion molding process.
In this embodiment, the wire includes only the optical fiber, but is not limited thereto, and in other embodiments, the wire may include a conductor stranded with the optical fiber, or the like, in addition to the optical fiber. The optical fiber may be a bare fiber or may contain an outer coating.
According to the flexible optical fiber wire and the manufacturing method thereof, the spiral groove 3 is adopted to accommodate the optical fiber 1, the optical fiber 1 can be protected by the spiral groove 3, and the optical fiber 1 is prevented from being in a sharp shape outside the flexible wire body, so that the optical fiber 1 is not easy to break when the optical fiber 1 is subjected to lateral pressure and/or axial friction force. Therefore, the present invention greatly improves the lateral pressure resistance and the axial friction resistance of the optical fiber 1. The spiral groove 3 is formed by arranging the outer side surface of the positioning sleeve 4, so that the forming process of the spiral groove 3 is simpler. Particularly, the positioning sleeves 4 are fixed on the shaft core 2 in a sleeving mode, the number of the positioning sleeves 4 is multiple, the positioning sleeves 4 are fixedly connected one by one along the length direction of the shaft core 2, and the processing difficulty of the positioning sleeve 4 provided with the spiral groove 3 can be reduced, because the length of the optical fiber line is generally longer, the manufacturing difficulty of the whole positioning sleeve with the spiral groove is higher, and the process is difficult to realize.
Example two
Referring to fig. 4-6, a flexible optical fiber according to the present invention is different from the first embodiment in that: the wire rod positioning portion is constituted by a long piece spirally wound around the outside of the core 2, the long piece is spirally wound to form a spiral thread, and the interval between adjacent spiral threads forms the spiral groove 3. The long condition is in particular, but not exclusively, a flexible strip 6, in other embodiments a flexible rope or a flexible tube or the like.
In this embodiment, the present invention further includes a protective layer disposed outside the shaft core 2, the long piece (i.e., the flexible tape 5), and the wire (i.e., the optical fiber 1), and the protective layer can not only protect the optical fiber 1, but also position the flexible tape 6 in a spirally wound state, so that the flexible tape 6 is not scattered. Of course, the positioning of the flexible strip 6 is not limited thereto. The protective layer is specifically an extruded insulating sheath 5, but is not limited thereto, and in other embodiments, the protective layer is any one or a combination of metal mesh, fiber mesh, spray coating and the like.
In this embodiment, the axial core 2 also includes a load-bearing wire core 21 and a core sleeve 22 disposed outside the load-bearing wire core 21. The bearing wire core 21 can be a metal wire and/or a non-metal wire, specifically, the bearing wire core 21 includes one or more of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire and the like, and when the bearing wire core 21 includes several of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire and the like, the several are combined into one strand. The core 21 can both bear load and improve the bending resistance of the invention. The core sleeve 22 may be made of metal or nonmetal, and when made of nonmetal, it may be manufactured by extrusion process. The load-bearing wire core 21 can be of a single core type or a multi-core type. In other embodiments, the core is a unitary piece and is solid or hollow. The shaft cores can be single-core type or multi-core type, namely the number of the shaft cores is multiple, and the multiple shaft cores are combined into a bundle.
The invention discloses a method for manufacturing a flexible optical fiber line, which comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing or selecting a long condition (specifically a flexible belt), spirally winding the long condition (specifically the flexible belt) outside the shaft core, forming spiral grains on the long condition (specifically the flexible belt) through spiral winding, and forming spiral grooves at intervals between adjacent spiral grains;
3) installing a wire including at least an optical fiber in the spiral groove to form a spiral shape;
4) and manufacturing a protective layer, wherein the protective layer is positioned outside the shaft core, the long condition and the wire.
In this embodiment, the wire includes only the optical fiber, but is not limited thereto, and in other embodiments, the wire may include a conductor stranded with the optical fiber, or the like, in addition to the optical fiber. The optical fiber may be a bare fiber or may contain an outer coating.
In this embodiment, the protective layer is an insulating sheath, and in step 4), the insulating sheath is manufactured by an extrusion molding process.
According to the flexible optical fiber wire and the manufacturing method thereof, the flexible belt or other long conditions are adopted to form the spiral groove in a mode of spirally winding the flexible optical fiber wire outside the shaft core, the process is simple, and the cost is low.
The above embodiments are only used to further illustrate the flexible optical fiber line and the method for manufacturing the same of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (11)
1. A flexible fiber optic line, comprising: the wire rod positioning device comprises a strip-shaped flexible shaft core and at least one wire rod, wherein a wire rod positioning part is arranged outside the shaft core, at least one spiral groove is formed in the wire rod positioning part, and the wire rod is arranged in the spiral groove to form a spiral shape; the wire includes an optical fiber.
2. The flexible fiber optic line of claim 1, wherein: the wire positioning part is a positioning sleeve arranged outside the shaft core, and the outer side surface of the positioning sleeve is provided with the spiral groove.
3. The flexible fiber optic line of claim 2, wherein: the number of the positioning sleeves is multiple, the positioning sleeves are fixedly connected one by one along the length direction of the shaft core, at least one spiral groove is formed in the outer side surface of each positioning sleeve, and the spiral grooves of adjacent positioning sleeves are in end-to-end butt joint.
4. The flexible fiber optic line of claim 2 or 3, wherein: the positioning sleeve is sleeved outside the shaft core, or the positioning sleeve is injected outside the shaft core; the flexible sleeve is made of plastic or rubber or silica gel.
5. The flexible fiber optic line of claim 1, wherein: the wire rod location portion by spiral winding the outer rectangular piece of axle core constitutes, and this rectangular piece forms the spiral line through spiral winding, and the interval between the adjacent spiral line forms spiral groove.
6. The flexible fiber optic line of claim 5, wherein: the elongate member is a flexible strip or cord or tube.
7. The flexible fiber optic line of claim 1, wherein: the wire rod spraying device is characterized by further comprising a protective layer arranged on the shaft core, the wire rod positioning portion and the wire rod, wherein the protective layer comprises any one or more of a protective sleeve, a metal net, a fiber net and a spraying layer.
8. The flexible fiber optic line of claim 1, wherein: the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapping the bare fiber; and/or the wire further comprises a conductor.
9. The flexible fiber optic line of claim 1, wherein: the shaft core comprises a load-bearing wire core and a core sleeve arranged outside the load-bearing wire core; the load-bearing wire core comprises one or more of nylon wire, cotton thread, bulletproof wire, fiber wire and conductor.
10. A method for manufacturing a flexible optical fiber line is characterized by comprising the following steps: the method comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing a positioning sleeve with at least one spiral groove on the outer side surface, wherein the positioning sleeve is positioned outside the shaft core;
3) a wire including at least an optical fiber is fitted in the spiral groove to form a spiral shape.
11. A method for manufacturing a flexible optical fiber line is characterized by comprising the following steps: the method comprises the following steps:
1) manufacturing or selecting a shaft core;
2) manufacturing or selecting a long condition, spirally winding the long strip outside the shaft core, forming spiral threads on the long strip through spiral winding, and forming spiral grooves at intervals between adjacent spiral threads;
3) a wire including at least an optical fiber is fitted in the spiral groove to form a spiral shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110693025.4A CN114280740A (en) | 2021-06-22 | 2021-06-22 | Flexible optical fiber line and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110693025.4A CN114280740A (en) | 2021-06-22 | 2021-06-22 | Flexible optical fiber line and manufacturing method thereof |
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| CN114280740A true CN114280740A (en) | 2022-04-05 |
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| CN202110693025.4A Pending CN114280740A (en) | 2021-06-22 | 2021-06-22 | Flexible optical fiber line and manufacturing method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020001442A1 (en) * | 2000-05-29 | 2002-01-03 | Alcatel | Optical fiber cable |
| CN206312613U (en) * | 2016-12-28 | 2017-07-07 | 江苏中煤电缆有限公司 | Optical fiber composite-type flexible drum cable |
| CN107086071A (en) * | 2017-05-27 | 2017-08-22 | 重庆渝丰鑫新线缆科技有限公司 | Monitor cable |
| CN206432074U (en) * | 2017-01-24 | 2017-08-22 | 河南新昊宝丰电缆科技有限公司 | A kind of Intelligent distribution optical fiber composite cable |
| CN107633912A (en) * | 2017-09-15 | 2018-01-26 | 苏州市光益捷通信科技有限公司 | A kind of fiber optic cables |
-
2021
- 2021-06-22 CN CN202110693025.4A patent/CN114280740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020001442A1 (en) * | 2000-05-29 | 2002-01-03 | Alcatel | Optical fiber cable |
| CN206312613U (en) * | 2016-12-28 | 2017-07-07 | 江苏中煤电缆有限公司 | Optical fiber composite-type flexible drum cable |
| CN206432074U (en) * | 2017-01-24 | 2017-08-22 | 河南新昊宝丰电缆科技有限公司 | A kind of Intelligent distribution optical fiber composite cable |
| CN107086071A (en) * | 2017-05-27 | 2017-08-22 | 重庆渝丰鑫新线缆科技有限公司 | Monitor cable |
| CN107633912A (en) * | 2017-09-15 | 2018-01-26 | 苏州市光益捷通信科技有限公司 | A kind of fiber optic cables |
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