CN115903158B - Butterfly-shaped band-shaped optical cable - Google Patents
Butterfly-shaped band-shaped optical cable Download PDFInfo
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- CN115903158B CN115903158B CN202310026856.5A CN202310026856A CN115903158B CN 115903158 B CN115903158 B CN 115903158B CN 202310026856 A CN202310026856 A CN 202310026856A CN 115903158 B CN115903158 B CN 115903158B
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Abstract
The application provides a butterfly-shaped band-shaped optical cable, which comprises at least one optical cable body, a loose tube unit and an outer sheath; the outer sheath comprises a first outer sheath coated outside the optical cable body, a second outer sheath coated outside the loose tube unit and a connecting part connected between the first outer sheath and/or the second outer sheath. The butterfly-shaped band-shaped optical cable adopts the loose tube unit filled with the optical fiber ribbon, so that the optical fiber filling rate of the butterfly-shaped optical cable is improved, and the requirement on the large core number of the butterfly-shaped optical cable is met. And loose sleeve pipe unit includes loose sleeve pipe, loose sleeve pipe's periphery is circular, and the inner chamber is regular polygon, can effectively prevent the optical fiber ribbon to twist reverse the winding in loose sleeve pipe to reduce limit fine attenuation intensity, and in the apex department of regular polygon loose sleeve pipe wall embedding is provided with first reinforcement, thereby further improves the intensity of optical cable.
Description
Technical Field
The application relates to the field of optical cables, in particular to a butterfly-shaped ribbon optical cable.
Background
The FTTH (FTTH is an english abbreviation for fiber to the home) is more convenient to install, and the optical network unit is installed at a home user or an enterprise user. Most of the existing butterfly-shaped optical cables adopt branch optical cables or beam-shaped optical cables, and cannot meet the access requirement of larger core numbers.
In order to meet the access requirement of large core number, optical fiber ribbon butterfly-shaped optical cables are also adopted, but the optical fiber ribbon is arranged in the optical cable in a mode that the optical fiber ribbon is directly embedded in a sheath, so that the attenuation and the reduction of the transmission performance are easily caused in the cabling process; when external force is applied, the fiber ribbon is easily stressed to generate the phenomenon of side fiber attenuation, so that the transmission performance of the optical fiber and the cabling quality of the optical fiber ribbon are affected.
Disclosure of Invention
The application provides a butterfly-shaped band-shaped optical cable for solving the problems existing in the prior art. The high filling rate requirement of the optical cable is met, and the attenuation of the side fiber of the optical fiber ribbon can be reduced.
The embodiment of the application provides a butterfly-shaped ribbon optical cable, which comprises: the optical cable comprises an optical cable body, a loose tube unit and an outer sheath, wherein the outer sheath comprises a first outer sheath coated outside the optical cable body, a second outer sheath coated outside the loose tube unit and a connecting part connected between the first outer sheath and/or the second outer sheath; the loose tube unit comprises a loose tube, water-blocking substances and optical fiber bands are filled in the loose tube, the optical fiber bands are at least one layer of optical fiber bands which are stacked or at least one flexible optical fiber band which is wound, and the optical fiber bands meet the communication requirements of FTTH; the periphery of loose sleeve pipe is circular, and the inner chamber is regular polygon to the embedding is provided with first reinforcement in the pipe wall of loose sleeve pipe of regular polygon summit department, first reinforcement can reduce the deformation that the pine sleeve pipe receives the summit department of regular polygon when outside extrusion.
In some embodiments, the fiber optic cable body includes: the optical cable body includes: the second optical fiber ribbon is arranged in the center of the optical cable and comprises an optical fiber core and a sponge cladding layer which is used for cladding the optical fiber core, second reinforcing pieces are symmetrically arranged on two sides of the second optical fiber ribbon, and the second reinforcing pieces extend along the length direction of the optical cable.
In some embodiments, the first stiffener is flat or arcuate.
In some embodiments, the loose tube comprises at least one of polybutylene terephthalate (PBT), polycarbonate (PC), and thermoplastic elastomer rubber (TPEE).
In some embodiments, the cable body is further connected with a hanging wire unit, the hanging wire unit includes a reinforcing member and a third outer sheath, the reinforcing member extends along the length direction of the cable body, the third outer sheath is wrapped outside the reinforcing member, and the connecting portion connects adjacent first outer sheath, second outer sheath or third outer sheath.
In some embodiments, the reinforcement is a regular polygon.
In some embodiments, the optical cable includes at least two optical cable bodies arranged in parallel, and each optical cable body is connected to the loose tube unit or the hanging wire unit.
In some embodiments, a third stiffener is embedded within the second outer sheath.
In some embodiments, the connecting portion and the first outer sheath and the second outer sheath and/or the third outer sheath are integrally formed, and the material is a low smoke halogen-free material or a flame retardant polyethylene material.
Compared with the prior art, the application has the following beneficial effects:
1. the loose tube unit filled with the optical fiber ribbon is arranged at the end part of the optical cable body, so that the optical fiber filling rate of the butterfly-shaped optical cable is improved.
2. According to the application, the periphery of the loose tube is circular, the inner cavity is in a regular polygon, the optical fiber ribbon is filled in the inner cavity, the optical fiber ribbon can be prevented from twisting and winding in the loose tube by the edges and corners of the polygon, and meanwhile, a slowing space is formed by the corner space of the regular polygon when the optical fiber ribbon is extruded from the outside, so that the problem of attenuation of the edge fiber is effectively solved; meanwhile, the first reinforcing piece is embedded in the pipe wall of the loose pipe at the vertex of the regular polygon, the first reinforcing piece can reduce deformation generated at the vertex of the regular polygon when the loose pipe is extruded externally, lateral pressure resistance and laying impact resistance of the loose pipe and the whole optical cable are improved, and the influence of external extrusion on the transmission performance of the optical fiber ribbon when the optical cable is laid is avoided.
3. The third reinforcing piece is arranged in the second outer sheath wall of the cladding loose tube unit, so that the tensile protection effect is achieved, and the strength is high and the technological performance is good.
4. The disconnection unit is arranged, so that the tensile protection effect is achieved, the strength is high, and the technological performance is good.
5. The optical cable bodies are connected in parallel through the connecting parts, are integrally symmetrically arranged, and are neat and attractive in layout and good in stability before cable separation. When the cable is required to be split, the connecting part can be split without cutting the cable and wrapping for restoration, and the operation is convenient.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
FIG. 2a shows a schematic view of a loose tube of a butterfly-shaped optical ribbon cable according to the present application;
FIG. 2b shows a schematic diagram II of a loose tube of a butterfly-shaped optical ribbon cable of the present application;
FIG. 2c shows a schematic diagram III of the loose tube of a butterfly-shaped optical ribbon cable of the present application;
FIG. 2d shows a schematic diagram of a loose tube of a butterfly-shaped optical ribbon cable according to the present application;
FIG. 3 shows a second schematic diagram of the structure of a butterfly-shaped optical ribbon cable of the present application;
FIG. 4 shows a third schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
FIG. 5 shows a fourth schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
FIG. 6 shows a fifth schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
FIG. 7 shows a schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
fig. 8 shows a schematic diagram of a butterfly-shaped optical ribbon cable according to the application.
In order to more accurately and clearly understand and practice the present application, reference is made to the following reference numerals, taken in conjunction with the accompanying drawings, in which: 10-loose tube unit, 11-optical fiber ribbon, 12-water blocking substance, 13-loose tube, 14-first reinforcement, 20-optical cable body, 211-second optical fiber ribbon, 211-optical fiber, 212-sponge cladding, 22-second reinforcement, 23-first outer sheath, 30-connection portion, 40-second outer sheath, 41-third reinforcement, 50-reinforcement, 51-third outer sheath.
Detailed Description
The term "comprising" in the description of the application and in the claims and in the drawings is synonymous with "including", "containing" or "characterized by", and is inclusive or open-ended and does not exclude additional unrecited elements or method steps. "comprising" is a technical term used in claim language to mean that the recited element is present, but other elements may be added and still form a construct or method within the scope of the recited claims.
It should be noted that: like reference numerals and letters in the following figures denote like items, and thus once an item is defined in one figure, no further definition or explanation of it is required in the following figures, and furthermore, the terms "first," "second," "third," etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance. The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The application will now be described in detail with reference to the accompanying drawings and specific examples.
Example 1
As shown in fig. 1 and 2a to 2d, the butterfly-shaped optical ribbon cable of the present embodiment includes a cable body 20, a loose tube unit 10, and an outer sheath; the outer sheath includes a first outer sheath 23 coated on the outside of the optical cable body 20, a second outer sheath 40 coated on the outside of the loose tube unit 10, and a connection part 30 connected between the first outer sheath 23 and the second outer sheath 40 such that the loose tube unit 10 is disposed substantially in parallel with the optical cable body 20. The optical cable body 20 includes: the second optical fiber ribbon 21 is arranged in the center of the optical cable, the second optical fiber ribbon 21 comprises optical fibers 211 and a sponge coating 212 for coating the optical fibers 211, second reinforcing members 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and a first outer sheath 23 is arranged outside the second optical fiber ribbon 21 and the second reinforcing members 22. Wherein the loose tube unit 10 comprises a loose tube 13, and at least one optical fiber ribbon 11 and a water-blocking substance 12 are filled in the loose tube 13; the outer surface of the loose tube 13 is cylindrical, the inner cavity is a regular polygon, at least 6 sides of the regular polygon of the inner cavity are provided, and a first reinforcing piece 14 is embedded in the tube wall of the loose tube 13 at the vertex of the regular polygon.
In this embodiment 1, as shown in fig. 1, the butterfly-shaped ribbon-shaped optical cable includes an optical cable body 20 and a loose tube unit 10, the optical cable body 20 is covered with a first outer sheath 23, the loose tube unit 10 is covered with a second outer sheath 40, and the first outer sheath 23 and the second outer sheath 40 are connected by a connection portion 30, so that the loose tube unit 10 is arranged substantially parallel to the optical cable body 20. The loose tube unit 10 includes a loose tube 13, and the sides of the regular polygon in the inner cavity of the loose tube 13 are regular hexagons, and the optical fiber ribbon 11 provided with at least one layer is stacked in the inner cavity of the regular hexagons, for example, 1-12 layers of optical fiber ribbon may be stacked in the inner cavity of the loose tube 13 in some embodiments, and so on. A schematic of stacking 4 layers of 8-core optical fiber ribbons is shown in fig. 2 a.
Unlike the prior art, the butterfly-shaped band-shaped optical cable in the embodiment adopts the loose tube unit 10 filled with the optical fiber ribbon 11, so that the optical fiber filling rate of the butterfly-shaped optical cable is improved, and the requirement on the large core number of the butterfly-shaped optical cable is met. Meanwhile, the loose tube 13 is different from the conventional loose tube with a round inner cavity, and the inner cavity of the loose tube 13 is designed to be a regular polygon, so that the edges and corners of the regular polygon can effectively prevent the optical fiber ribbon 11 from twisting and winding in the loose tube 13. The first reinforcing piece 14 is embedded in the pipe wall of the loose pipe 13 at the vertex of the regular polygon, and the first reinforcing piece 14 can reduce deformation generated at the vertex of the regular polygon when the loose pipe is extruded by the outside, so that the strength of the loose pipe is further improved, and the transmission performance of an optical fiber and the cabling quality of an optical fiber ribbon are ensured.
At least one layer of optical fiber ribbon 11 is stacked within loose tube 13 or at least one flexible optical fiber ribbon 11 is wound.
The number of cores of the ribbon may be set according to different needs, for example, in some embodiments the ribbon may be 4-core, 6-core, 8-core, 10-core, 12-core, 24-core, etc., with the fiber cores of the ribbon satisfying FTTH communications requirements.
The outer diameter of the loose tube varies depending on the outer diameter requirement of the cable and the fiber core number setting. For example, in some embodiments, 4 layers of 8-core optical fiber ribbons 11 are stacked within a loose tube, with the loose tube 13 having an outer diameter of 4.6mm.
The water blocking substance 12 filled in the loose tube comprises at least one of a fiber paste, a water blocking yarn or a water blocking powder. For example, each water blocking material may be filled alone, or may be a mixture of at least two of a fiber paste, a water blocking yarn, and a water blocking powder.
The loose tube 13 is made of one of PBT, PC and TPEE, for example, one single material can be used for molding the tube, a mixture of multiple materials can be used for molding the tube, and two materials can be used for molding the tube by double-layer co-extrusion process. The PBT material enables the loose tube to have better temperature characteristics, tensile strength and stability; the PC material has low shrinkage, so that the loose tube 13 is not easy to deform and has good wear resistance; the TPEE material has both the elasticity of rubber and the strength of engineering plastic, so that the loose tube 13 has good bending property and strength.
The first reinforcement 14 is a rigid material, preferably FRP, and is flat or arcuate.
The second reinforcing member 22 is a rigid material, preferably galvanized steel wire, which ensures excellent mechanical properties and acts as a moisture barrier.
The sponge coating 212 isolates the optical fiber 211 from contact with the first outer sheath 23, and when the optical cable is impacted, the sponge coating 212 can absorb external impact and help buffer the external force to which the optical fiber is subjected.
The first outer sheath 23, the second outer sheath 40 and the connecting part 30 are integrally formed, and are made of low-smoke halogen-free materials or flame-retardant polyethylene materials, so that the environment-friendly and flame-retardant performance is good.
V-shaped tearing grooves are symmetrically formed on two sides of the first outer sheath 23, so that the optical cable is easy to strip, connection is convenient, and installation and maintenance are simplified.
In some embodiments, the sides of the polygon in the inner cavity of loose tube 13 are larger than 6, and the optical fiber ribbons filled in loose tube 13 can be stacked and combined by using optical fiber ribbons with different cores. As shown in fig. 2b, the regular polygon of the inner cavity of the loose tube 13 is a regular octagon, and 6-core and 8-core optical fiber ribbons 11 and the like are stacked simultaneously in the loose tube. Simultaneously, optical fiber strips with different core numbers are stacked in the loose tube 13, so that the space utilization rate of an inner cavity can be improved, the optical fiber filling rate is improved, meanwhile, the optical fiber strips with different core numbers are stacked to form more edges and angles, the optical fiber strips can be prevented from twisting and winding in the loose tube, and a slowing space is formed in the corner space of the regular polygon when the optical fiber strips are extruded from the outside, so that the problem of attenuation of the edge fiber is effectively solved.
In some embodiments, the optical fiber ribbon 11 filled in the loose tube 13 is a coiled flexible optical fiber ribbon, for example, 1-12 coiled flexible optical fiber ribbons are provided in the loose tube 13. A schematic of providing 4 coiled flexible optical fiber ribbons is shown in fig. 2 c. The optical fiber ribbon is wound in the inner cavity of the regular polygon of the loose tube, so that on one hand, the maximized inner cavity space of the loose tube is utilized, the filling rate of the optical fiber is improved, on the other hand, the stressed area of the optical fiber ribbon when the optical fiber ribbon is subjected to lateral pressure is increased, and the limit of external force which can be borne by the optical cable is improved to a certain extent.
In some embodiments, the first reinforcement 14 provided at the apex of the inner cavity regular polygon of the loose tube 13 is arc-shaped, as shown in fig. 2d, and the inner cavity regular polygon of the loose tube 13 is regular octagon in fig. 2 d.
Example two
As shown in fig. 3, the butterfly-shaped optical ribbon cable of this embodiment includes an optical cable body 20 and two loose tube units 10, the optical cable body 20 is covered with a first outer sheath 23, the loose tube units 10 are covered with a second outer sheath 40, and the first outer sheath 23 and the second outer sheath 40 are connected by a connecting portion 30, so that the two loose tube units 10 are symmetrically disposed at two ends of the optical cable body 20. The optical cable body 20 includes: the second optical fiber ribbon 21 is arranged in the center of the optical cable, the second optical fiber ribbon 21 comprises optical fibers 211 and a sponge coating 212 for coating the optical fibers 211, second reinforcing members 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and a first outer sheath 23 is arranged outside the second optical fiber ribbon 21 and the second reinforcing members 22. The loose tube unit 10 comprises a loose tube 13, and at least one optical fiber ribbon 11 and a water blocking substance 12 are filled in the loose tube 13; as with the structure of the "loose tube" described in embodiment 1, the outer periphery of the loose tube 13 is circular, the inner cavity is in the shape of a regular polygon, and a first reinforcement 14 is provided embedded in the wall of the loose tube at the apex of the regular polygon, the first reinforcement 14 being capable of reducing deformation generated at the apex of the regular polygon when the loose tube 13 is externally pressed.
In this embodiment, the optical cable body 20 is symmetrically provided with 2 loose tube units 10 on two sides, and the loose tube units are filled with optical fiber ribbons, so that the optical fiber filling rate of the butterfly-shaped optical cable is greatly improved, and meanwhile, the aesthetic property of the optical cable is ensured.
In some embodiments, a third reinforcing member 41 is further disposed in the second outer sheath 40 covering the loose tube unit 10, and as shown in fig. 4, the third reinforcing members 41 are symmetrically disposed at both sides of the loose tube unit 10. The third reinforcement 41 may be made of metal or non-metal materials, such as copper-plated steel wire, galvanized steel wire, glass fiber rod, FRP, etc., and has tensile protection effect, high strength and good technological performance.
Example III
As shown in fig. 5, the butterfly-shaped optical ribbon cable of the present embodiment includes 1 cable body 20;1 loose tube unit 10;1 suspension wire unit including a reinforcement 50, and a third outer sheath 51 covering the reinforcement 50; the optical cable body 20 is externally coated with the first outer sheath 23, the loose tube unit 10 is externally coated with the second outer sheath 40, and the first outer sheath 23, the second outer sheath 40 and the third outer sheath 51 are connected through the connecting part 30, so that the loose tube unit 10 and the hanging wire unit are symmetrically arranged at two ends of the optical cable body 20. The optical cable body 20 includes: the second optical fiber ribbon 21 is arranged in the center of the optical cable, the second optical fiber ribbon 21 comprises optical fibers 211 and a sponge coating 212 for coating the optical fibers 211, second reinforcing members 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and a first outer sheath 23 is arranged outside the second optical fiber ribbon 21 and the second reinforcing members 22. The loose tube unit 10 comprises a loose tube 13, and at least one optical fiber ribbon 11 and a water blocking substance 12 are filled in the loose tube 13; as with the structure of the "loose tube" described in embodiment 1, the outer periphery of the loose tube 13 is circular, the inner cavity is in the shape of a regular polygon, and a first reinforcement 14 is provided embedded in the wall of the loose tube at the apex of the regular polygon, the first reinforcement 14 being capable of reducing deformation generated at the apex of the regular polygon when the loose tube 13 is externally pressed.
The first outer sheath 23, the second outer sheath 40, the third outer sheath 51 and the connecting part 30 are integrally formed, and are made of low-smoke halogen-free materials or flame-retardant polyethylene materials, so that the environment-friendly and flame-retardant performance is good.
In this embodiment, the reinforcing member 50 is circular and symmetrically disposed on two sides of the optical cable body with the loose tube unit 10, so as to ensure the aesthetic property and stability of the optical cable. And the reinforcing member 50 can be made of metal or nonmetal materials, such as copper-plated steel wires, galvanized steel wires, glass fiber rods, FRP and the like, and has the tensile protection function, so that the strength is high and the technological performance is good.
In some embodiments, the reinforcement 50 is polygonal, as shown in fig. 6, the reinforcement 50 is regular hexagonal, but may also be regular tetragonal, regular octagonal, etc. The strength members are polygonal to prevent twisting between the strength members 50 and the third outer jacket 51, thereby preventing twisting of the entire cable.
Example IV
As shown in fig. 7 to 8, the butterfly-shaped optical ribbon cable of the present embodiment includes: at least two optical cable bodies 20, each optical cable body 20 is connected with the loose tube unit 10 or the hanging wire unit. The at least two optical cable bodies 20 are connected by the connecting portion 30, and the at least two optical cable bodies are arranged in parallel to form a branch optical cable. The optical cable body 20 includes: the second optical fiber ribbon 21 is arranged in the center of the optical cable, the second optical fiber ribbon 21 comprises optical fibers 211 and a sponge coating 212 for coating the optical fibers 211, second reinforcing members 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and a first outer sheath 23 is arranged outside the second optical fiber ribbon 21 and the second reinforcing members 22. The loose tube unit 10 comprises a loose tube 13, and at least one optical fiber ribbon 11 and a water blocking substance 12 are filled in the loose tube 13; as with the structure of the "loose tube" described in embodiment 1, the outer periphery of the loose tube 13 is circular, the inner cavity is in the shape of a regular polygon, and a first reinforcement 14 is provided embedded in the wall of the loose tube at the apex of the regular polygon, the first reinforcement 14 being capable of reducing deformation generated at the apex of the regular polygon when the loose tube 13 is externally pressed.
In this embodiment, as shown in fig. 7, the optical fiber cable comprises 3 optical fiber cable bodies 20 and 3 loose tube units 10, wherein 1 loose tube unit 10 is arranged at the end part of the same side of each optical fiber cable body 20 to form 3 sub-branch optical fiber cables; the 3 sub-branch optical cables are connected in parallel by a connecting part 30. The loose tube unit 10 is externally covered with a second outer sheath 40, and a third reinforcing member 41 is embedded in the wall of the second outer sheath 40. The branched butterfly-shaped optical ribbon cable in the embodiment adopts the loose tube unit 10 filled with the optical fiber ribbon 11, so that the optical fiber filling rate of the butterfly-shaped optical cable is improved, the requirement on the large core number of the butterfly-shaped optical cable is met, and the regular polygon cavity structure of the loose tube 13 ensures the transmission performance of the optical fibers and the cabling quality of the optical fiber ribbon. The single butterfly-shaped optical cables of the branch butterfly-shaped optical cable are connected through the connecting part 30, the whole branch butterfly-shaped optical cable is symmetrically arranged, and before the branch butterfly-shaped optical cable is not split, the optical cable layout is neat and attractive, and the stability is good. When the cable needs to be split, the connecting part 30 can be split without cutting the cable and wrapping for repair, and the operation is convenient. The second reinforcing member 22 is embedded in the cable body of each butterfly-shaped optical cable, the third reinforcing member 41 is embedded in the second outer sheath 40, and the third reinforcing members 41 are symmetrically arranged at both sides of the loose tube unit 10. The third reinforcement 41 may be made of metal or non-metal rigid materials, such as copper plated steel wires, galvanized steel wires, glass fiber rods, FRP, etc., and has a tensile protection function, so that the individual cables after cable separation can be fully protected.
In some embodiments, 2 cable bodies 20 are provided, and as shown in fig. 8, 1 loose tube unit 10 is connected to each of two ends of one cable body 20 to form a sub-branch cable; two ends of the other optical cable body 20 are respectively connected with 1 suspension wire unit to form another sub-branch optical cable; the two sub-branch cables are connected by a connection 30. The single butterfly-shaped optical cables of the branch butterfly-shaped optical cable are connected through the connecting part 30, the whole branch butterfly-shaped optical cable is symmetrically arranged, and before the branch butterfly-shaped optical cable is not split, the optical cable layout is neat and attractive, and the stability is good. The loose tube unit 10 is connected with the reinforcing piece 50, the reinforcing piece 50 can be made of metal or nonmetal, and can be made of copper-plated steel wires, galvanized steel wires, glass fiber rods, FRP (fiber reinforced Plastic) and the like, so that the loose tube unit has a tensile protection effect, and the tensile strength of a product and the convenience of construction are ensured.
The foregoing has outlined rather broadly the more detailed description of embodiments of the application, wherein the principles and embodiments of the application are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (9)
1. A butterfly-shaped optical ribbon cable, comprising:
the optical cable comprises an optical cable body, a loose tube unit and an outer sheath, wherein the outer sheath comprises a first outer sheath coated outside the optical cable body, a second outer sheath coated outside the loose tube unit and a connecting part connected between the first outer sheath and/or the second outer sheath;
the fiber optic cable is characterized in that the loose tube unit comprises a loose tube, water blocking substances and fiber optic cables are filled in the loose tube, the fiber optic cables are at least one layer of fiber optic cables which are stacked or at least one flexible fiber optic cable which is wound, and the fiber optic cables can meet the communication requirement of FTTH;
the periphery of loose sleeve pipe is circular, and the inner chamber is regular polygon to the embedding is provided with first reinforcement in the pipe wall of loose sleeve pipe of regular polygon summit department, first reinforcement can reduce the deformation that the pine sleeve pipe receives the summit department of regular polygon when outside extrusion.
2. The butterfly fiber optic ribbon cable of claim 1, wherein the cable body comprises: the second optical fiber ribbon is arranged in the center of the optical cable and comprises an optical fiber core and a sponge cladding layer which is used for cladding the optical fiber core, second reinforcing pieces are symmetrically arranged on two sides of the second optical fiber ribbon, and the second reinforcing pieces extend along the length direction of the optical cable.
3. The butterfly fiber optic ribbon cable of claim 2, wherein the first strength member is flat or arcuate.
4. The butterfly-shaped optical ribbon cable of claim 2, wherein the loose tube comprises at least one of polybutylene terephthalate (PBT), polycarbonate (PC), and thermoplastic elastomer rubber (TPEE).
5. The butterfly-shaped optical ribbon cable of claim 2, wherein the cable body is further connected with a hanging wire unit, the hanging wire unit comprises a reinforcing member and a third outer sheath, the reinforcing member extends along the length direction of the cable body, the third outer sheath is wrapped outside the reinforcing member, and the connecting portion is connected with the adjacent first outer sheath, second outer sheath or third outer sheath.
6. The butterfly fiber optic ribbon cable of claim 5, wherein the strength members are regular polygons.
7. The butterfly fiber optic ribbon cable of claim 5, wherein the cable comprises at least two cable bodies disposed in parallel side-by-side relationship, each of the cable bodies having the loose tube unit or the messenger unit attached thereto.
8. The butterfly fiber optic ribbon cable of any of claims 2-7, wherein a third strength member is embedded within the second outer jacket.
9. The butterfly-shaped optical ribbon cable of any of claims 2-7, wherein the connection section and the first and second and/or third outer jackets are integrally formed and are made of a low smoke, halogen-free material or a flame retardant polyethylene material.
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| CN202310026856.5A CN115903158B (en) | 2023-01-09 | 2023-01-09 | Butterfly-shaped band-shaped optical cable |
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| CN202310026856.5A CN115903158B (en) | 2023-01-09 | 2023-01-09 | Butterfly-shaped band-shaped optical cable |
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| CN115903158B true CN115903158B (en) | 2023-08-11 |
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| CN218068371U (en) * | 2022-05-30 | 2022-12-16 | 江苏裕荣光电科技有限公司 | Anti-electromagnetic interference 5G communication optical fiber ribbon |
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