CN219842580U - Bending-resistant low-loss single-mode optical fiber - Google Patents
Bending-resistant low-loss single-mode optical fiber Download PDFInfo
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- CN219842580U CN219842580U CN202320940889.6U CN202320940889U CN219842580U CN 219842580 U CN219842580 U CN 219842580U CN 202320940889 U CN202320940889 U CN 202320940889U CN 219842580 U CN219842580 U CN 219842580U
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- optical fiber
- bending
- fiber fixing
- shaped supporting
- mode
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 75
- 238000005452 bending Methods 0.000 title claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 9
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an anti-bending low-loss single-mode fiber, which comprises a protective sleeve and a plurality of single-mode fibers, wherein the protective sleeve comprises an outer wear-resistant layer, a heat insulation layer, an inner bending-resistant layer and an optical fiber fixing tube which are sequentially arranged from outside to inside; according to the utility model, the inner bending-resistant layer is matched with the optical fiber fixing tube, so that breakage caused by excessive bending of the optical fiber can be avoided.
Description
Technical Field
The utility model relates to an anti-bending low-loss single-mode fiber.
Background
In recent years, with the development of network technology, optical fibers are used as a main means of network transmission due to the characteristics of low price and strong working performance, and in the use process of the optical cable, the optical fibers may be broken easily due to bad environments such as bending, dragging, extrusion and the like, so that the optical cable is invalid;
in the prior patent literature, the application number is: 202221933933.2, the name is: the patent of the outdoor rubber-insulated cable of single mode of preventing breaking provides an optical cable that can resist excessive bending, including the protective sheath, set up the bending-resistant skeleton in the protective sheath, set up a plurality of optic fibre in the protective sheath, bending-resistant skeleton transversal personally submits the cross setting, bending-resistant skeleton extends along the length direction of protective sheath.
Four paying-off areas are arranged on the bending-resistant framework, and a plurality of optical fibers are respectively arranged on the four paying-off areas.
The edge of the bending-resistant framework is abutted against the inner wall of the protective sleeve.
The edge of the bending-resistant framework is provided with a gasket, and the gasket is attached to the inner wall of the protective sleeve.
In the scheme, the bending resistance skeleton is arranged to resist the bending acting force, so that the bending degree of the optical cable is kept in a small range, and the optical fiber is not easy to break;
however, in this solution, the cross-shaped bending-resistant skeleton does not bear the radial pressure well, so that deformation easily occurs, and it is difficult to protect the inner cable.
Disclosure of Invention
The utility model aims to solve the technical problems that the existing optical fiber has poor protection performance, and the optical fiber is extremely easy to break in the bad environments such as bending, dragging and extrusion, so that the optical cable is invalid.
Aiming at the technical problems, the anti-bending low-loss single-mode fiber is provided, and comprises a protective sleeve and a plurality of single-mode fibers, wherein the protective sleeve comprises an outer wear-resistant layer, a heat insulation layer, an inner bending-resistant layer and an optical fiber fixing tube which are sequentially arranged from outside to inside, a plurality of optical fiber fixing cavities are formed in the optical fiber fixing tube, and the plurality of single-mode fibers are respectively arranged in the plurality of optical fiber fixing cavities;
according to the utility model, the inner bending-resistant layer is matched with the optical fiber fixing tube, so that the whole bending of the optical cable wire by a larger angle can be avoided, and the optical fiber inside the optical cable is prevented from being broken.
Further, the inner bending-resistant layer comprises an inner protective sleeve and a plurality of V-shaped supporting pieces, two ends of each V-shaped supporting piece are connected with the inner wall of the inner protective sleeve, the top ends of the V-shaped supporting pieces are propped against the outer wall of the optical fiber fixing tube, and the plurality of V-shaped supporting pieces are uniformly arranged at intervals along the circumferential direction; the plurality of V-shaped supporting sheets can improve the toughness of the inner bending-resistant layer and limit the maximum bending angle of the inner bending-resistant layer, so that the optical fiber is prevented from being broken due to overlarge bending angle.
Furthermore, the protective sleeve and the V-shaped supporting sheet are both made of PVC materials; the PVC material has strong flexibility, wear resistance and low cost, and is easy to manufacture.
Further, the optical fiber fixing cavities penetrate through the side wall of the optical fiber fixing tube along the axial direction, the optical fiber fixing cavities are uniformly arranged on the optical fiber fixing tube at intervals along the circumferential direction, a partition plate is arranged between two adjacent optical fiber fixing cavities, and each optical fiber fixing cavity is filled with a flexible protector; the single-mode fiber can be effectively limited to slide in the optical fiber fixing cavity by the arranged flexible protector, so that the single-mode fiber is fixed.
Further, a reinforcing core is sleeved in the inner hole of the optical fiber fixing tube; the toughness of the optical fiber fixing tube can be improved by the arranged reinforcing core, and the maximum bending angle of the optical fiber fixing tube is limited.
Further, each baffle plate is arranged corresponding to the top end of one V-shaped supporting piece, and the top ends of the V-shaped supporting pieces are fixedly connected with the outer wall of the optical fiber fixing tube; through V-arrangement backing sheet and baffle cooperation, can effectively avoid the fixed chamber compression deformation of optic fibre to avoid the fiber bending fracture.
Furthermore, the outer wear-resistant layer is made of polytetrafluoroethylene material; polytetrafluoroethylene materials are more resistant to wear.
Compared with the prior art, the utility model has the following beneficial effects:
according to the technical scheme, the inner bending-resistant layer is matched with the optical fiber fixing tube, so that the whole bending of the optical cable wire by a large angle can be avoided, and the optical fiber inside the optical cable is prevented from being broken; the plurality of V-shaped supporting plates can improve the toughness of the inner bending-resistant layer and limit the maximum bending angle of the inner bending-resistant layer, and the V-shaped supporting plates are matched with the partition plates, so that the compression deformation of the optical fiber fixing cavity can be effectively avoided, and the bending fracture of the optical fiber is avoided.
Drawings
Fig. 1 is an axial cross-sectional view of the present utility model.
Detailed Description
The following describes the technical solution in the embodiment of the present utility model in detail with reference to fig. 1 in the embodiment of the present utility model.
Example 1
As shown in fig. 1, the bending-resistant low-loss single-mode fiber comprises a protection sleeve and a plurality of single-mode fibers 1, wherein the protection sleeve comprises an outer abrasion-resistant layer 2, a heat insulation layer 3, an inner bending-resistant layer 4 and an optical fiber fixing tube 5 which are sequentially arranged from outside to inside, and the outer abrasion-resistant layer 2, the heat insulation layer 3 and the inner bending-resistant layer 4 are fixedly connected;
the optical fiber fixing tube 5 is provided with a plurality of integrally formed optical fiber fixing cavities 5a, and a plurality of single-mode optical fibers 1 are respectively arranged in the optical fiber fixing cavities 5 a;
the inner bending-resistant layer 4 comprises an inner protection sleeve 4a and a plurality of V-shaped supporting pieces 4b, two ends of each V-shaped supporting piece 4b are fixedly connected with the inner wall of the inner protection sleeve 4a through hot melting or gluing, the top ends of the V-shaped supporting pieces 4b are propped against the outer wall of the optical fiber fixing tube 5, and the top ends of the V-shaped supporting pieces 4b are fixedly connected with the outer wall of the optical fiber fixing tube 5 through hot melting or gluing;
the protective sleeve 4a and the V-shaped supporting piece 4b are made of flexible PVC materials.
The optical fiber fixing cavities 5a penetrate through the side wall of the optical fiber fixing tube 5 along the axial direction, the optical fiber fixing cavities 5a are uniformly arranged on the optical fiber fixing tube 5 at intervals along the circumferential direction, a partition plate 5b is arranged between two adjacent optical fiber fixing cavities 5a, a plurality of V-shaped supporting pieces 4b are uniformly arranged at intervals along the circumferential direction, each partition plate 5b corresponds to the top end of one V-shaped supporting piece 4b, the external pressure is transmitted to the inner protection sleeve 4a, the V-shaped supporting pieces 4b at corresponding stress points are stressed, the resultant force of the pressure born by the two ends of the V-shaped supporting pieces is transmitted to the partition plate 5b, and therefore the external force is prevented from being directly applied to the optical fiber fixing cavities 5a, and the single-mode optical fiber 1 in the optical fiber fixing cavities 5a is bent;
each optical fiber fixing cavity 5a is filled with a flexible protector 6, and the flexible protector 6 can reduce the deformation of the optical fiber fixing cavity 5a when being stressed and deformed and fix the single-mode optical fiber 1 in the optical fiber fixing cavity 5 a.
The inner hole of the optical fiber fixing tube 5 is sleeved with a reinforcing core 7, the reinforcing core 7 improves the toughness of the optical fiber fixing tube 5, and the maximum bending angle of the optical fiber fixing tube 5 is reduced;
the outer wear-resistant layer 2 is made of polytetrafluoroethylene materials, and the polytetrafluoroethylene materials are more wear-resistant.
The implementation process of the utility model comprises the following steps: when the bending-resistant low-loss single-mode fiber in the embodiment is used, external pressure is transmitted to the inner protection sleeve 4a, the V-shaped supporting piece 4b at the corresponding stress point is stressed, and resultant force of the pressures born by the two ends of the V-shaped supporting piece is transmitted to the partition plate 5b, so that the external force is prevented from being directly applied to the fiber fixing cavity 5a, and the single-mode fiber 1 in the fiber fixing cavity 5a is bent.
The above embodiments are only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the present utility model.
Claims (7)
1. The utility model provides a single mode fiber of bending resistance low loss, includes protective sleeve and a plurality of single mode fiber (1), its characterized in that, protective sleeve includes outer antifriction layer (2), insulating layer (3), interior bending resistance layer (4) and optical fiber fixing tube (5) that set gradually from outside to inside, is equipped with a plurality of optical fiber fixing chamber (5 a) on optical fiber fixing tube (5), and a plurality of single mode fiber (1) set up respectively in a plurality of optical fiber fixing chamber (5 a).
2. The bending-resistant low-loss single-mode optical fiber of claim 1, wherein: the inner bending resistant layer (4) comprises an inner protection sleeve (4 a) and a plurality of V-shaped supporting pieces (4 b), two ends of each V-shaped supporting piece (4 b) are connected with the inner wall of the inner protection sleeve (4 a), the top ends of the V-shaped supporting pieces (4 b) are abutted against the outer wall of the optical fiber fixing tube (5), and the plurality of V-shaped supporting pieces (4 b) are uniformly arranged at intervals along the circumferential direction.
3. The bending-resistant low-loss single-mode optical fiber of claim 2, wherein: the protective sleeve (4 a) and the V-shaped supporting piece (4 b) are made of PVC materials.
4. The bending-resistant low-loss single-mode optical fiber of claim 2, wherein: the optical fiber fixing cavities (5 a) penetrate through the side wall of the optical fiber fixing tube (5) along the axial direction, the optical fiber fixing cavities (5 a) are uniformly arranged on the optical fiber fixing tube (5) at intervals along the circumferential direction, a partition plate (5 b) is arranged between every two adjacent optical fiber fixing cavities (5 a), and flexible protectors (6) are filled in each optical fiber fixing cavity (5 a).
5. The bending-resistant low-loss single-mode optical fiber of claim 4, wherein: the inner hole of the optical fiber fixing tube (5) is sleeved with a reinforcing core (7).
6. The bending-resistant low-loss single-mode optical fiber of claim 4, wherein: each baffle (5 b) corresponds to the top end of one V-shaped supporting piece (4 b), and the top end of the V-shaped supporting piece (4 b) is fixedly connected with the outer wall of the optical fiber fixing tube (5).
7. The bending-resistant low-loss single-mode optical fiber of claim 1, wherein: the outer wear-resistant layer (2) is made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320940889.6U CN219842580U (en) | 2023-04-24 | 2023-04-24 | Bending-resistant low-loss single-mode optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320940889.6U CN219842580U (en) | 2023-04-24 | 2023-04-24 | Bending-resistant low-loss single-mode optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219842580U true CN219842580U (en) | 2023-10-17 |
Family
ID=88305346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320940889.6U Active CN219842580U (en) | 2023-04-24 | 2023-04-24 | Bending-resistant low-loss single-mode optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219842580U (en) |
-
2023
- 2023-04-24 CN CN202320940889.6U patent/CN219842580U/en active Active
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