CN115903158A - Butterfly-shaped ribbon optical cable - Google Patents
Butterfly-shaped ribbon optical cable Download PDFInfo
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- CN115903158A CN115903158A CN202310026856.5A CN202310026856A CN115903158A CN 115903158 A CN115903158 A CN 115903158A CN 202310026856 A CN202310026856 A CN 202310026856A CN 115903158 A CN115903158 A CN 115903158A
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Abstract
The application provides a butterfly-shaped ribbon 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 ribbon optical cable adopts the loose tube unit filled with the optical fiber ribbon, improves the optical fiber filling rate of the butterfly-shaped optical cable, and meets the requirement on large core number of the butterfly-shaped optical cable. And the loose tube unit comprises a loose tube, the periphery of the loose tube is circular, the inner cavity of the loose tube is in a regular polygon shape, the optical fiber ribbon can be effectively prevented from being twisted and wound in the loose tube, so that the attenuation strength of the side fiber is reduced, and a first reinforcing member is embedded in the tube wall of the loose tube at the vertex of the regular polygon shape, so that the strength of the optical cable is further improved.
Description
Technical Field
The application relates to the field of optical cables, in particular to a butterfly-shaped ribbon optical cable.
Background
The FTTH has the obvious technical characteristics that not only is larger bandwidth provided, but also the transparency of the network to data formats, rates, wavelengths and protocols is enhanced, the requirements on environmental conditions, power supply and the like are relaxed, the maintenance and installation are simplified) further construction, and the optical cable requires large core number, but the size of the optical cable is as small as possible. The existing butterfly-shaped optical cable mostly adopts a branch optical cable or a bundle optical cable, and the access requirement of larger core number cannot be met.
In order to meet the access requirement of large core number, an optical fiber ribbon butterfly-shaped optical cable is adopted, but the optical fiber ribbon is mostly arranged in the optical cable in a mode of being directly embedded in a sheath, and the attenuation and the reduction of the transmission performance are easily caused in the cabling process; when external force is applied, the optical fiber ribbon is easily stressed to generate the phenomenon of side fiber attenuation, and the transmission performance of the optical fiber and the cabling quality of the optical fiber ribbon are influenced.
Disclosure of Invention
The invention provides a butterfly-shaped ribbon cable for solving the problems in the prior art. The requirement of high filling rate of the optical cable is met, and the attenuation of the optical fiber at the edge of the optical fiber band can be reduced.
The embodiment of the application provides a butterfly-shaped optical ribbon cable, it includes: 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 filled with an optical fiber ribbon and a water-blocking substance; the periphery of loose sleeve pipe is circular, and the inner chamber is regular polygon to the apex of regular polygon imbeds in the pipe wall of loose sleeve pipe and is provided with first reinforcement, first reinforcement can reduce loose sleeve pipe is in when receiving outside extrusion the deformation that produces in the apex of regular polygon.
In some embodiments, the fiber optic cable body includes: the optical cable body includes: the second optical fiber ribbon is arranged at the center of the optical cable and comprises an optical fiber core and a sponge cladding covering the optical fiber core, second reinforcing parts are symmetrically arranged on two sides of the second optical fiber ribbon and extend along the length direction of the optical cable.
In some embodiments, the first stiffener is flat or curved.
In some embodiments, at least one layer of fiber optic ribbon is stacked or at least one flexible fiber optic ribbon is wound within a loose tube.
In some embodiments, the material of the loose tube includes at least one of polybutylene terephthalate (PBT), polycarbonate (PC), and thermoplastic elastomer rubber (TPEE).
In some embodiments, the optical cable body is further connected with a suspension wire unit, the suspension wire unit includes a reinforcing member and a third outer sheath, the reinforcing member extends along the length direction of the optical cable body, the third outer sheath covers the outside of the reinforcing member, and the connecting portion connects the adjacent first outer sheath, the second outer sheath or the third outer sheath.
In some embodiments, the reinforcement is in the shape of a regular polygon.
In some embodiments, the optical cable includes at least two cable bodies arranged in parallel, each of the cable bodies having the loose tube unit or the suspension wire unit attached thereto.
In some embodiments, a third strength member is embedded within the second outer jacket.
In some embodiments, the connecting body and the first outer sheath, the second outer sheath and/or the third outer sheath are integrally formed, and the connecting body is made of a low smoke zero halogen material or a flame-retardant polyethylene material.
Compared with the prior art, the beneficial effect that this application can reach:
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. In the application, the periphery of the loose sleeve is circular, the inner cavity is in a regular polygon shape, the optical fiber ribbon is filled in the inner cavity, the inner cavity of the loose sleeve is in the regular polygon shape, the polygonal sides and corners can prevent the optical fiber ribbon from being twisted and wound in the loose sleeve, and meanwhile, the corner space of the regular polygon when being extruded from the outside forms a slowing space, so that the problem of attenuation of the side fibers is effectively solved; simultaneously, at regular polygon's apex the embedding is provided with first reinforcement in the loose sheathed tube pipe wall, first reinforcement can reduce when the loose sleeve pipe receives outside extrusion deformation that produces at regular polygon's apex department has improved the anti side pressure of loose sleeve pipe and whole optical cable and has laid the ability of assaulting with anti, and outside extrusion influences the transmission performance of optical fiber tape when avoiding the optical cable to lay.
3. The third reinforcing piece is arranged in the second outer sheath wall of the cladding loose tube unit, so that the cladding loose tube unit has a tensile protection effect, and is high in strength and good in process performance.
4. The wire falling unit is arranged, so that the tensile protection effect is achieved, the strength is high, and the process performance is good.
5. A plurality of optical cable bodies pass through connecting portion and connect side by side, wholly are the symmetry and set up, before still not dividing the cable, the optical cable overall arrangement is neat pleasing to the eye, and stability is good. When the cable is required to be separated, the cable can be separated by cutting the connecting part, the cable does not need to be cut, and the cable is not required to be wrapped and repaired, so that the operation is convenient.
In order to make the aforementioned 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 required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a first schematic diagram illustrating the construction of a butterfly-shaped ribbon cable of the present application;
FIG. 2a is a first schematic view of a loose tube of a butterfly-shaped optical ribbon cable of the present application;
FIG. 2b is a schematic diagram of a loose tube configuration of a butterfly-shaped optical ribbon cable of the present application;
FIG. 2c is a schematic diagram showing a third embodiment of a loose tube for a butterfly ribbon cable of the present application;
FIG. 2d is a fourth schematic view of the loose tube construction of a butterfly ribbon cable of the present application;
FIG. 3 is a second schematic diagram of a butterfly-shaped optical ribbon cable of the present application;
FIG. 4 is a schematic diagram of a third configuration of a butterfly-shaped fiber optic ribbon cable of the present application;
FIG. 5 is a fourth schematic structural view of a butterfly-shaped ribbon cable of the present application;
FIG. 6 is a schematic diagram illustrating a fifth configuration of a butterfly-shaped ribbon cable of the present application;
FIG. 7 illustrates a sixth structural schematic view of a butterfly-shaped ribbon cable of the present application;
fig. 8 shows a seventh structural schematic diagram of a butterfly-shaped ribbon cable of the present application.
In order that the present application may be more accurately and clearly understood and put into practical effect by those skilled in the art, reference will now be made in detail to the accompanying drawings, in which: 10-loose tube unit, 11-optical fiber ribbon, 12-water-blocking substance, 13-loose tube, 14-first strength member, 20-optical cable body, 211-second optical fiber ribbon, 211-optical fiber, 212-sponge cladding, 22-second strength member, 23-first outer sheath, 30-connecting part, 40-second outer sheath, 41-third strength member, 50-strength member, and 51-third outer sheath.
Detailed Description
The terms "comprising," "including," or "containing" in the description and claims of this application and the accompanying drawings are synonymous with "including," "containing," or "characterized by," and are inclusive or open-ended and do not exclude additional unrecited elements or method steps. "comprising" is a term of art used in claim language and means that the recited elements are present but that other elements may be added and still form a structure or method within the scope of the recited claims.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, 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 technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
The invention is described in detail below with reference to the drawings and specific embodiments.
Example one
As shown in fig. 1 and fig. 2a to 2d, the butterfly-shaped optical fiber ribbon cable of the present embodiment includes a cable body 20, a loose tube unit 10, and an outer sheath; the outer sheath comprises a first outer sheath 23 coated outside the optical cable body 20, a second outer sheath 40 coated outside the loose tube unit 10, and a connecting part 30 connected between the first outer sheath 23 and the second outer sheath 40, so that the loose tube unit 10 is arranged approximately in parallel with the optical cable body 20. The 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 cladding 212 for cladding the optical fibers 211, second reinforcing parts 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and first outer sheaths 23 are arranged outside the second optical fiber ribbon 21 and the second reinforcing parts 22. The loose tube unit 10 includes 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 in the shape of a regular polygon, the number of the regular polygon sides of the inner cavity is not less than 6, 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, a butterfly-shaped optical fiber ribbon cable is shown in fig. 1, and includes an optical fiber cable body 20 and a loose tube unit 10, where the optical fiber cable body 20 is externally covered by a first outer sheath 23, the loose tube unit 10 is externally covered by 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 disposed substantially parallel to the optical fiber cable body 20. The loose tube unit 10 includes a loose tube 13, the sides of the regular polygon of the cavity in the loose tube 13 are regular hexagons, and at least one layer of optical fiber ribbons 11 are stacked in the regular hexagon cavity, for example, in some embodiments, 1-12 layers of optical fiber ribbons may be stacked in the cavity of the loose tube 13, and so on. A schematic diagram of stacking 4 layers of 8-core fiber optic ribbons is shown in fig. 2 a.
Different from the prior art, the butterfly-shaped ribbon 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 circular inner cavity, and the inner cavity of the loose tube 13 is designed to be a regular polygon in the application, 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 member 14 is embedded in the tube wall of the loose tube 13 at the vertex of the regular polygon, and the first reinforcing member 14 can reduce the deformation of the loose tube at the vertex of the regular polygon when the loose tube is extruded from the outside, so that the strength of the loose tube is further improved, and the transmission performance of the optical fiber and the cabling quality of the optical fiber ribbon are ensured.
At least one layer of optical fiber ribbon 11 is stacked or at least one flexible optical fiber ribbon 11 is wound in the loose tube 13.
The number of cores of the fiber optic ribbons can be arranged according to various needs, for example, in some embodiments the fiber optic ribbons can be 4, 6, 8, 10, 12, 24, etc.
The outer diameter of the loose tube is different according to the outer diameter requirement of the optical cable and the arrangement of the optical fiber cores. For example, in some embodiments, 4 layers of 8-core fiber optic ribbons 11 are stacked in a 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 fiber paste, water-blocking yarn or water-blocking powder. For example, each water-blocking material may be filled alone, or a mixture of at least two of a fiber paste, a water-blocking yarn, and a water-blocking powder may be used.
The material of the loose tube 13 includes one of PBT, PC and TPEE, for example, a single material may be used for plastic tube, a mixture of multiple materials may be used for plastic tube, or two materials may be used for double-layer co-extrusion process for plastic tube. The PBT material enables the loose tube to have better temperature characteristic, tensile strength and stability; the PC material has low shrinkage rate, so that the loose tube 13 is not easy to deform and has better wear resistance; the TPEE material has both rubber elasticity and engineering plastic strength, so that the loose tube 13 has good bending property and strength.
The first reinforcing member 14 is made of a rigid material, preferably FRP, and has a flat or curved shape.
The second reinforcement 22 is a rigid material, preferably galvanized steel wire, which ensures excellent mechanical properties as well as moisture protection.
The sponge covering 212 isolates the optical fiber 211 from the first outer sheath 23, and when the optical cable is impacted, the sponge covering 212 can absorb the external impact and help buffer the external force applied to the optical fiber.
The first outer sheath 23, the second outer sheath 40 and the connecting portion 30 are integrally formed and made of low-smoke halogen-free materials or flame-retardant polyethylene materials, so that the environment is protected, and the flame retardant property is good.
The V-shaped tearing grooves are symmetrically formed in the two sides of the first outer sheath 23, so that the optical cable is easy to peel off, the connection is convenient, and the installation and maintenance are simplified.
In some embodiments, the sides of the polygon of the inner cavity of the loose tube 13 are larger than 6, and the optical fiber ribbons filled in the loose tube 13 can also adopt the optical fiber ribbon stacking combination with different core numbers. As shown in fig. 2b, the regular polygon of the inner cavity of the loose tube 13 is a regular octagon, the optical fiber ribbons 11 of 6 cores and 8 cores are stacked simultaneously in the loose tube, and so on. Meanwhile, the optical fiber ribbons with different core numbers are stacked in the loose sleeve 13, the space utilization rate of the inner cavity can be improved, the optical fiber filling rate is improved, meanwhile, the optical fiber ribbons with different core numbers are stacked to form more edges and angles, the optical fiber ribbons can be prevented from being twisted and wound in the loose sleeve, and the corner space of the regular polygon is formed to slow down the space when the regular polygon is extruded outside, so that the problem of attenuation of the edge fibers is effectively solved.
In some embodiments, loose tube 13 is filled with fiber optic ribbon 11 that is a coiled flexible fiber optic ribbon, such as 1-12 coiled flexible fiber optic ribbons disposed within loose tube 13. A schematic diagram of 4 coiled flexible fiber optic 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, on one hand, the maximized inner cavity space of the loose tube is utilized, the optical fiber filling rate is improved, on the other hand, the winding form of the optical fiber ribbon increases the stress area of the optical fiber ribbon when the optical fiber ribbon is pressed laterally, and the limit of the external force which can be borne by the optical fiber cable is improved to a certain extent.
In some embodiments, the first reinforcement 14 provided at the vertices 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 in fig. 2d is regular octagon-shaped.
Example two
As shown in fig. 3, the butterfly-shaped optical fiber ribbon cable of the present embodiment includes a cable body 20 and two loose tube units 10, wherein the cable body 20 is externally covered with a first outer sheath 23, the loose tube units 10 are externally 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 two loose tube units 10 are symmetrically disposed at two ends of the cable body 20. The 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 cladding 212 for cladding the optical fibers 211, the second optical fiber ribbon 21 is symmetrically provided with second reinforcing parts 22 at two sides, and the second optical fiber ribbon 21 and the second reinforcing parts 22 are externally provided with a first outer sheath 23. The loose tube unit 10 comprises a loose tube 13, and the loose tube 13 is filled with at least one optical fiber ribbon 11 and a water-blocking substance 12; as in the structure of the "loose tube" described in embodiment 1, the outer periphery of the loose tube 13 is circular, the inner cavity is a regular polygon, and a first reinforcing member 14 is embedded in the tube wall of the loose tube at the vertex of the regular polygon, and the first reinforcing member 14 can reduce the deformation generated at the vertex of the regular polygon when the loose tube 13 is externally pressed.
In this embodiment, 20 bilateral symmetry of optical cable body sets up 2 loose tube unit 10, and the optical fiber ribbon is filled in the loose tube unit, has improved the optic fibre filling rate of butterfly-shaped optical cable greatly, guarantees the aesthetic property of optical cable simultaneously.
In some embodiments, a third strength 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 strength member 41 is symmetrically disposed at both sides of the loose tube unit 10. The third reinforcement 41 may be made of metal or non-metal material, such as copper-plated steel wire, zinc-plated steel wire, glass fiber rod, FRP, etc., and has tensile protection effect, high strength and good processing performance.
EXAMPLE III
As shown in fig. 5, the butterfly-shaped optical fiber 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 a first outer sheath 23, the loose tube unit 10 is externally coated with a second outer sheath 40, and the first outer sheath 23, the second outer sheath 40 and the third outer sheath 51 are connected through a connecting part 30, so that the loose tube unit 10 and the suspension wire unit are symmetrically arranged at two ends of the optical cable body 20. The 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 cladding 212 for cladding the optical fibers 211, the second optical fiber ribbon 21 is symmetrically provided with second reinforcing parts 22 at two sides, and the second optical fiber ribbon 21 and the second reinforcing parts 22 are externally provided with a first outer sheath 23. 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 in the structure of the "loose tube" described in embodiment 1, the outer periphery of the loose tube 13 is circular, the inner cavity is a regular polygon, and a first reinforcing member 14 is embedded in the tube wall of the loose tube at the vertex of the regular polygon, and the first reinforcing member 14 can reduce the deformation generated at the vertex 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 portion 30 are integrally formed and made of low-smoke halogen-free materials or flame-retardant polyethylene materials, so that the environment is protected, and the flame retardant property is good.
In this embodiment, the reinforcing member 50 is circular and symmetrically disposed on both 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. The material of the reinforcement 50 can be selected from metal or non-metal materials, such as copper-plated steel wire, zinc-plated steel wire, glass fiber rod, FRP and the like, and has tensile protection effect, high strength and good processing performance.
In some embodiments, the reinforcement 50 is polygonal, as shown in fig. 6, the reinforcement 50 is a regular hexagon, and may also be a regular quadrangle, a regular octagon, and so on. The use of a polygonal shape for the strength members prevents twisting between the strength members 50 and the third outer jacket 51, thereby preventing twisting of the entire cable.
Example four
As shown in fig. 7-8, the butterfly-shaped optical fiber ribbon cable of the present embodiment includes: at least two optical cable bodies 20, each of the optical cable bodies 20 being connected to the loose tube unit 10 or the suspension wire unit. The at least two optical cable bodies 20 are connected through the connecting part 30, and the at least two optical cable bodies are arranged in parallel to form a branch optical cable. The 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 cladding 212 for cladding the optical fibers 211, second reinforcing parts 22 are symmetrically arranged on two sides of the second optical fiber ribbon 21, and first outer sheaths 23 are arranged outside the second optical fiber ribbon 21 and the second reinforcing parts 22. The loose tube unit 10 comprises a loose tube 13, and the loose tube 13 is filled with at least one optical fiber ribbon 11 and a water-blocking substance 12; as in the structure of the "loose tube" described in embodiment 1, the outer circumference of the loose tube 13 is circular, the inner cavity is a regular polygon, and a first reinforcing member 14 is embedded in the tube wall of the loose tube at the vertex of the regular polygon, and the first reinforcing member 14 can reduce the deformation of the loose tube 13 at the vertex of the regular polygon when the loose tube is externally pressed.
In the present embodiment, as shown in fig. 7, 3 optical cable bodies 20,3 loose tube units 10 are included, and 1 loose tube unit 10 is disposed at the same side end of each optical cable body 20 to form 3 sub-branch optical cables; the 3 sub-branch cables are connected in parallel by a connection section 30. The loose tube unit 10 is externally covered by a second outer sheath 40, and a third reinforcing element 41 is embedded in the wall of the second outer sheath 40. The branch butterfly-shaped ribbon 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, the requirement for large core number of the butterfly-shaped optical cable is met, and the regular polygonal cavity structure of the loose tube 13 ensures the transmission performance of the optical fiber 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 the optical cable is neat and attractive in layout and good in stability before cable distribution. When the cable is required to be separated, the cable can be separated by cutting the connecting part 30, and the cable does not need to be cut and wrapped for repair, so that the operation is convenient. Moreover, the second reinforcing member 22 is embedded in the cable body of each butterfly-shaped optical cable, the third reinforcing members 41 are embedded in the second outer sheath 40, and the third reinforcing members 41 are symmetrically arranged on two sides of the loose tube unit 10. The third reinforcement 41 may be made of a metal or non-metal rigid material, such as a copper-plated steel wire, a zinc-plated steel wire, a glass fiber rod, an FRP, etc., and has a tensile protection function, so as to sufficiently protect the single optical cable after cable separation.
In some embodiments, 2 cable bodies 20 are provided, as shown in fig. 8, with 1 loose tube unit 10 connected to each end of one of the cable bodies 20 to form one 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 portion 30. The single butterfly-shaped optical cables of the branch butterfly-shaped optical cable are connected through the connecting part 30, the whole single butterfly-shaped optical cables are symmetrically arranged, and the optical cable is neat and attractive in layout and good in stability before cable distribution. The loose tube unit 10 is connected with the reinforcing piece 50, and the material of the reinforcing piece 50 can be selected for use metal or nonmetal reinforcing piece, can be materials such as copper-plated steel wire, galvanized steel wire, glass fiber rod, FRP, possesses tensile guard action, guarantees the tensile strength of product and the convenience of construction.
The foregoing embodiments have been described in detail, and specific examples are used herein to explain the principles and implementations of the present application, where the above description of the embodiments is only intended to help understand the method and its core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A butterfly-shaped fiber optic 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 optical fiber cable is characterized in that the loose tube unit comprises a loose tube, and an optical fiber ribbon and a water-blocking substance are filled in the loose tube;
the periphery of loose sleeve pipe is circular, and the inner chamber is regular polygon to the apex of regular polygon imbeds in the pipe wall of loose sleeve pipe and is provided with first reinforcement, first reinforcement can reduce loose sleeve pipe is in when receiving outside extrusion the deformation that produces in the apex of regular polygon.
2. The butterfly ribbon cable of claim 1, wherein the cable body comprises: the second optical fiber ribbon is arranged at the center of the optical cable and comprises an optical fiber core and a sponge covering layer covering the optical fiber core, second reinforcing parts are symmetrically arranged on two sides of the second optical fiber ribbon and extend along the length direction of the optical cable.
3. The butterfly ribbon cable of claim 2 wherein the first strength member is flat or curved.
4. The butterfly ribbon cable of claim 2, wherein the loose tube is stacked with at least one fiber ribbon or wound with at least one flexible fiber ribbon.
5. The butterfly ribbon cable of claim 2 wherein the material of the loose tube comprises at least one of polybutylene terephthalate (PBT), polycarbonate (PC), and thermoplastic elastomer rubber (TPEE).
6. The butterfly ribbon cable of claim 2, wherein the cable body further comprises a suspension wire unit connected thereto, the suspension wire unit comprises a reinforcement member and a third outer sheath, the reinforcement member extends along a length direction of the cable body, the third outer sheath covers the reinforcement member, and the connecting portion connects the adjacent first outer sheath, the second outer sheath, or the third outer sheath.
7. The butterfly ribbon cable of claim 6 wherein the strength members are in the shape of a regular polygon.
8. The butterfly ribbon cable of claim 6, wherein the cable comprises at least two cable bodies arranged in parallel, each of the cable bodies having the loose tube unit or the messenger unit attached thereto.
9. The butterfly ribbon cable of any one of claims 2-8, wherein a third strength member is embedded within the second outer jacket.
10. The butterfly ribbon cable of any one of claims 2-8, wherein the connector and the first and second outer sheaths and/or the third outer sheath are integrally formed and made of a low smoke zero halogen material or a flame retardant polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310026856.5A CN115903158B (en) | 2023-01-09 | 2023-01-09 | Butterfly-shaped band-shaped optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310026856.5A CN115903158B (en) | 2023-01-09 | 2023-01-09 | Butterfly-shaped band-shaped optical cable |
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| CN115903158A true CN115903158A (en) | 2023-04-04 |
| CN115903158B CN115903158B (en) | 2023-08-11 |
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