CN111487734A - Optical cable - Google Patents
Optical cable Download PDFInfo
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- CN111487734A CN111487734A CN202010336338.XA CN202010336338A CN111487734A CN 111487734 A CN111487734 A CN 111487734A CN 202010336338 A CN202010336338 A CN 202010336338A CN 111487734 A CN111487734 A CN 111487734A
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- protective layer
- outer protective
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The application provides an optical cable, and belongs to the technical field of optical cables. The optical cable comprises an outer protective layer, a plurality of reinforced cores distributed in the outer protective layer at intervals and a plurality of optical fibers distributed in the outer protective layer at intervals, wherein one optical fiber is arranged between every two adjacent reinforced cores. All optical fibers are arranged in the same outer protective layer, and the stability of the whole structure is good. In addition, an optical fiber is arranged between every two adjacent reinforced cores, namely the reinforced cores are arranged on two sides of one optical fiber, the structure improves the strength of the optical cable, and the optical cable has good tensile capacity.
Description
Technical Field
The application relates to the field of optical cables, in particular to an optical cable.
Background
The existing optical cable comprises a plurality of mutually independent subunits, and an optical fiber is arranged in each subunit, so that the stability of the whole structure of the optical cable with the structure is poor.
Disclosure of Invention
The embodiment of the application provides an optical cable to improve the poor problem of optical cable overall structure stability.
In a first aspect, an embodiment of the present application provides an optical cable, which includes an outer protection layer, a plurality of strength cores spaced apart from each other in the outer protection layer, and a plurality of optical fibers spaced apart from each other in the outer protection layer, where one optical fiber is disposed between every two adjacent strength cores.
In the technical scheme, all the optical fibers are arranged in the same outer protective layer, so that the stability of the whole structure is good. In addition, an optical fiber is arranged between every two adjacent reinforced cores, namely the reinforced cores are arranged on two sides of one optical fiber, the structure improves the strength of the optical cable, and the optical cable has good tensile capacity.
In addition, the optical cable of the embodiment of the application also has the following additional technical characteristics:
in some embodiments of the present application, a cross section of the outer protection layer is in a strip shape, and the cross section of the outer protection layer has a width direction and a thickness direction that are perpendicular to each other;
the plurality of reinforcing cores are distributed in the outer protective layer at intervals along the width direction;
the optical fibers are distributed in the outer protective layer at intervals along the width direction.
Among the above-mentioned technical scheme, the strip structure is personally submitted in the cross street of outer protective layer, and all strengthen the core and all follow width direction interval distribution in outer protective layer, and the optical cable of this kind of structure is convenient for the shaping manufacturing, has further promoted its structural stability, strengthens the stability when the arrangement of core and the strip structure of protective sheath has guaranteed the optical cable and has used.
In some embodiments of the present application, the outer protective layer has a first end face and a second end face disposed oppositely in the thickness direction;
a first hand-tearing notch is arranged at a position, corresponding to each optical fiber, on the first end face; and/or
And a second hand-tearing notch is arranged at the position, corresponding to each optical fiber, on the second end face.
In the technical scheme, the first hand-tearing notch is formed in the position, corresponding to each optical fiber, on the first end face of the outer protection layer, and the outer protection layer can be conveniently torn through the first hand-tearing notch so as to leak the optical fibers; and a second hand-tearing notch is arranged at a position corresponding to each optical fiber on the second end face of the outer protection layer, and the outer protection layer can be conveniently torn through the second hand-tearing notch so as to leak the optical fibers.
In some embodiments of the present application, the first tear notch is V-shaped.
In the structure, the first hand tearing notch is V-shaped, and the outer protection layer is easier to tear by the first hand tearing notch with the structure.
In some embodiments of the present application, the second tear notch is V-shaped.
In the structure, the second tearing notch is V-shaped, and the second tearing notch of the structure can tear the outer protection layer more easily.
In some embodiments of the present application, the first end face is parallel to the second end face;
the axis of each first strength member and the axis of each optical fiber are located in the same reference plane, and the distance between the first end face and the reference plane is equal to the distance between the second end face and the reference plane.
In the above technical scheme, the distance between the first end face and the plane is equal to the distance between the second end face and the reference plane, that is, the first reinforced core and the second reinforced core are arranged between the first end face and the second end face in the middle, so that the optical cable has better structural stability.
In some embodiments of the present application, a cross-section of the outer protective layer is annular, the cross-section of the outer protective layer having a circumferential direction;
the plurality of reinforcing cores are distributed in the outer protective layer at intervals along the circumferential direction;
the optical fibers are distributed in the outer protective layer at intervals along the circumferential direction.
In the technical scheme, the cross section of the outer protective layer is annular, and all the reinforcing cores and all the optical fibers are distributed in the outer protective layer at intervals along the circumferential direction, so that the structure further improves the structural stability of the optical cable, reduces the space occupied by the optical cable, and improves the bending strength of the optical cable.
In some embodiments of the present application, the outer protection layer has an outer circumferential surface, and a third hand-tearing notch is disposed at a position corresponding to each optical fiber on the outer circumferential surface.
Among the above-mentioned technical scheme, be provided with the third hand on the outer periphery of outer protective layer and every optic fibre corresponding position and tear the breach, tear the outer protective layer that can be convenient through the third hand and tear the breach to spill optic fibre.
In some embodiments of the present application, the third hand-tear notch is V-shaped.
Among the above-mentioned technical scheme, the third hand tears the breach for the V-arrangement, and the outer protective layer is torn more easily to the first hand of this kind of structure tearing the breach.
In some embodiments of the present application, the outer protective layer has an inner circumferential surface defining a central aperture;
the optical cable further comprises a strengthening unit, and the strengthening unit penetrates through the central hole.
Among the above-mentioned technical scheme, wear to be equipped with the enhancement unit in the centre bore in the outer protective layer, the tensile strength of whole optical cable can further be improved to the enhancement unit.
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 schematic structural view of a fiber optic cable provided in some embodiments of the present application;
FIG. 2 is a schematic structural view of a fiber optic cable according to other embodiments of the present application;
FIG. 3 is a schematic structural view of a fiber optic cable provided in accordance with further embodiments of the present application;
fig. 4 is a schematic structural view of a fiber optic cable according to further embodiments of the present application.
Icon: 100-an optical cable; 10-an outer protective layer; 11-a first end face; 111-first hand tear notch; 1111-a first slope; 1112-a second bevel; 12-a second end face; 121-second tear notch; 1211 — a third inclined plane; 1212-a fourth bevel; 13-outer circumferential surface; 131-a third hand-tear notch; 1311-fifth bevel; 1312-sixth ramp; 14-inner circumferential surface; 141-a central hole; 20-a reinforcing core; 30-an optical fiber; 40-a reinforcement unit; a-width direction; b-thickness direction; c-circumferential direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the 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.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
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.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
As shown in fig. 1-4, a fiber optic cable 100 according to an embodiment of the present invention includes an outer protective layer 10, a plurality of strength cores 20 spaced apart from each other in the outer protective layer 10, and a plurality of optical fibers 30 spaced apart from each other in the outer protective layer 10, wherein one optical fiber 30 is disposed between every two adjacent strength cores 20.
All the optical fibers 30 are arranged in the same outer protective layer 10, and the overall structural stability is good. In addition, one optical fiber 30 is arranged between every two adjacent reinforced cores 20, namely, the reinforced cores 20 are arranged on both sides of one optical fiber 30, so that the structure improves the strength of the optical cable 100, and the optical cable 100 has good tensile capacity.
The outer protective layer 10 may be made of various materials, and for example, the outer protective layer 10 is made of high-strength modified polyvinyl chloride. The core 20 may also be made of various materials, such as phosphated steel wire, stainless steel wire, and the like.
The outer protective layer 10 may have various structures, and the optical fiber 30 and the core 20 may have various arrangements.
In some embodiments of the present application, as shown in fig. 1, the cross section of the outer protective layer 10 is a bar shape, and the cross section of the outer protective layer 10 has a width direction a and a thickness direction B perpendicular to each other. All the reinforcing cores 20 are distributed at intervals in the outer protective layer 10 in the width direction a. All the optical fibers 30 are spaced apart in the width direction a within the outer protective layer 10.
The cross street area of outer protective layer 10 is strip structure, and all reinforcement core 20 all distribute in outer protective layer 10 along width direction A interval, and the optical cable 100 of this kind of structure is convenient for the shaping manufacturing, has further promoted its structural stability, and the stability when optical cable 100 used has been guaranteed to the arrangement of reinforcement core 20 and the strip structure of protective sheath.
It should be noted that the outer protection layer 10 has a length direction, a width direction and a thickness direction which are mutually perpendicular in pairs, the width direction of the outer protection layer 10 is the same as the width direction a of the cross section of the outer protection layer 10, the thickness direction of the outer protection layer 10 is the same as the thickness direction B of the cross section of the outer protection layer 10, and the length direction of the outer protection layer 10 is the direction perpendicular to the cross section of the outer protection layer 10.
Further, all the optical fibers 30 are uniformly spaced in the outer protective layer 10, and all the reinforcing cores 20 are uniformly spaced in the outer protective layer 10.
Optionally, the outer protection layer 10 has a first end face 11 and a second end face 12 opposite to each other in the thickness direction B, a first hand-tearing notch 111 is disposed on the first end face 11 at a position corresponding to each optical fiber 30, and a second hand-tearing notch 121 is disposed on the second end face 12 at a position corresponding to each optical fiber 30.
Because the first hand-tearing notch 111 is arranged at the position, corresponding to each optical fiber 30, on the first end face 11, and the second hand-tearing notch 121 is arranged at the position, corresponding to each optical fiber 30, on the second end face 12, the outer protective layer 10 can be torn through the first hand-tearing notch 111, and the outer protective layer 10 can also be torn through the second hand-tearing notch 121, so that the optical fibers 30 are exposed, and the operation is convenient.
Furthermore, the outer protection layer 10 is provided with a first inclined surface 1111 and a second inclined surface 1112 intersecting with the first end surface 11, the first inclined surface 1111 and the second inclined surface 1112 intersect and jointly define a first hand-tearing notch 111, and an included angle formed between the first inclined surface 1111 and the second inclined surface 1112 is 40-60 degrees; the outer protective layer 10 is provided with a third inclined surface 1211 and a fourth inclined surface 1212 which intersect with the second end surface 12, the third inclined surface 1211 and the fourth inclined surface 1212 intersect and jointly define a second hand-tearing notch 121, and an included angle formed between the third inclined surface 1211 and the fourth inclined surface 1212 is 40-60 degrees.
In a first hand-tearing notch 111 and a second hand-tearing notch 121 corresponding to the same optical fiber 30, a first inclined plane 1111 and a second inclined plane 1112 of the first hand-tearing notch 111 intersect at a first intersection line, a third inclined plane 1211 and a fourth inclined plane 1212 of the second hand-tearing notch 121 intersect at a second intersection line, the first intersection line and the second intersection line are parallel and jointly define a plane, and the plane is perpendicular to the width direction a of the cross section of the outer protection layer 10.
The first tear notch 111 and the second tear notch 121 may be a variety of shapes. In the present embodiment, the first tear notch 111 and the second tear notch 121 are V-shaped to tear the outer protective layer 10 more easily. In other embodiments, the first tear notch 111 and the second tear notch 121 may have other structures, for example, the first tear notch 111 and the second tear notch 121 are U-shaped.
Further, the axis of each of the strength cores 20 and the axis of each of the optical fibers 30 are located in the same reference plane, the first end face 11 is disposed in parallel with the second end face 12, and the distance between the first end face 11 and the reference plane is equal to the distance between the second end face 12 and the reference plane. That is, first strength member 20 and second strength member 20 are centrally located between first end face 11 and second end face 12, resulting in cable 100 having greater structural stability.
In this embodiment, the first end surface 11 and the second end surface 12 of the outer protection layer 10 are respectively provided with a first tear notch 111 and a second tear notch 121. In other embodiments, the hand-tearing notch may be provided on only one of the first end surface 11 and the second end surface 12, and as shown in fig. 2, the first hand-tearing notch 111 is provided on only the first end surface 11 of the outer protection layer 10.
Illustratively, the distance between the first end surface 11 and the second end surface 12 is 1.6mm to 1.7mm, the thickness of the outer protective layer 10 around each reinforcing core 20 is not less than 0.15mm, the distance between the edges of every two adjacent reinforcing cores 20 is not less than 0.5mm, the diameter of each reinforcing core 20 is 0.46mm to 0.5mm (if the reinforcing core 20 is a phosphatized steel wire, the thickness of the phosphatized layer on the outer side of the steel wire is 0.05mm), the distance from the intersection position of the first inclined surface 1111 and the second inclined surface 1112 to the first end surface 11 is 0.45mm to 0.55mm, and the distance from the intersection position of the third inclined surface 1211 and the fourth inclined surface 1212 to the second end surface 12 is 0.45mm to 0.55 mm.
The process of forming the optical cable 100 having a strip-shaped cross section includes: controlling the tensile force applied to the optical fiber 30 in production to be 0.5N-1N through an active pay-off machine and a tension controller; the optical fiber preheating adjusting device is positioned above the optical fiber paying-off component, and the heating temperature is adjusted according to the room temperature through the adjusting switch, so that the optical fiber 30 is preheated and dried, and the influence of the room temperature and air moisture on the optical fiber 30 is reduced; the reinforced core 20 (phosphatized steel wire) is controlled to be 500N-700N in tension through an active paying-off and straightening device, so that the steel wire is not bent or twisted before entering an extrusion molding machine head, and the steel wire 200 is heated to 160-170 ℃ through a high-frequency preheating device, so that a steel wire coating is in a semi-molten state; the outer protection layer 10 is produced in an extrusion mode, a sectional warm water cooling mode is adopted, the temperature of a first section of water tank is maintained at 40-60 ℃, and the temperature of a second section of water tank is controlled at 22-25 ℃ so as to improve the adhesive force between the outer protection layer 10 and the steel wire, improve the crystallinity of a sheath material and reduce the internal stress of the outer protection layer 10 after extrusion; finally, a first hand-tearing notch 111 and a second hand-tearing notch 121 are formed on the outer surface of the outer protective layer 10.
The outer protective layer 10 of the optical cable 100 may have other structures in addition to the above-described structure.
As shown in fig. 3, in some embodiments of the present application, the cross-section of the outer protective layer 10 is annular, and the cross-section of the outer protective layer 10 has a circumferential direction C. All the reinforcing cores 20 are spaced apart in the outer protective layer 10 in the circumferential direction C. All the optical fibers 30 are spaced apart in the outer protective layer 10 in the circumferential direction C.
The cross section of the outer protective layer 10 is annular, and all the reinforcing cores 20 and all the optical fibers 30 are distributed in the outer protective layer 10 at intervals along the circumferential direction C, so that the structure further improves the structural stability of the optical cable 100, reduces the space occupied by the optical cable 100, and improves the bending strength of the optical cable 100.
Optionally, the outer protection layer 10 has an outer circumferential surface 13, and a third tear notch 131 is disposed on the outer circumferential surface 13 at a position corresponding to each optical fiber 30.
The outer circumferential surface 13 of the outer protection layer 10 is provided with a third hand-tearing notch 131 at a position corresponding to each optical fiber 30, and the outer protection layer 10 can be conveniently torn through the third hand-tearing notch 131 to leak the optical fibers 30.
Furthermore, a fifth inclined surface 1311 and a sixth inclined surface 1312 intersecting with the outer circumferential surface 13 of the outer protection layer 10 are arranged on the outer protection layer, the fifth inclined surface 1311 and the sixth inclined surface 1312 intersect and jointly define a third hand tearing gap 131, and an included angle formed between the fifth inclined surface 1311 and the sixth inclined surface 1312 is 40-60 degrees.
The intersection line of the fifth inclined surface 1311 and the sixth inclined surface 1312 is a third intersection line, and the third intersection line of each third hand-tearing notch 131, the axis of the optical fiber 30 corresponding to the third hand-tearing notch 131, and the axis of the outer protective layer 10 are coplanar.
In this embodiment, all the optical fibers 30 are circumferentially and uniformly distributed in the outer protective layer 10, and all the reinforcing cores 20 are circumferentially and uniformly distributed in the outer protective layer 10.
Since the cross-section of the outer protective layer 10 is a ring-shaped structure, the outer protective layer 10 has an inner circumferential surface 14, and the inner circumferential surface 14 defines a central hole 141.
As shown in FIG. 4, in some embodiments of the present application, cable 100 further includes strength members 40, strength members 40 being disposed through central bore 141. Strength members 40 serve to reinforce cable 100 to further increase the tensile strength of cable 100 as a whole.
The reinforcing unit 40 may be made of various materials, such as steel, aluminum, etc.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An optical cable, comprising:
an outer protective layer;
a plurality of reinforcing cores distributed at intervals in the outer protective layer; and
and a plurality of optical fibers distributed in the outer protective layer at intervals, wherein one optical fiber is arranged between every two adjacent reinforced cores.
2. The optical cable of claim 1, wherein the cross section of the outer protective layer is strip-shaped, and the cross section of the outer protective layer has a width direction and a thickness direction which are perpendicular to each other;
the plurality of reinforcing cores are distributed in the outer protective layer at intervals along the width direction;
the optical fibers are distributed in the outer protective layer at intervals along the width direction.
3. The optical cable according to claim 2, wherein the outer protective layer has a first end face and a second end face which are oppositely disposed in the thickness direction;
a first hand-tearing notch is arranged at a position, corresponding to each optical fiber, on the first end face; and/or
And a second hand-tearing notch is arranged at the position, corresponding to each optical fiber, on the second end face.
4. A cable as claimed in claim 3, wherein the first hand-tear notch is V-shaped.
5. The fiber optic cable of claim 3, wherein the second tear notch is V-shaped.
6. The fiber optic cable of claim 3, wherein the first end face is parallel to the second end face;
the axis of each first strength member and the axis of each optical fiber are located in the same reference plane, and the distance between the first end face and the reference plane is equal to the distance between the second end face and the reference plane.
7. The optical cable of claim 1 wherein the outer protective layer has a circular cross-section, the outer protective layer having a circumferential cross-section;
the plurality of reinforcing cores are distributed in the outer protective layer at intervals along the circumferential direction;
the optical fibers are distributed in the outer protective layer at intervals along the circumferential direction.
8. The fiber optic cable of claim 7, wherein the outer protective layer has an outer circumferential surface with a third hand-tear notch disposed at a location corresponding to each optical fiber.
9. The fiber optic cable of claim 8, wherein the third hand tear notch is V-shaped.
10. The fiber optic cable of claim 7, wherein the outer protective layer has an inner circumferential surface defining a central bore;
the optical cable further comprises a strengthening unit, and the strengthening unit penetrates through the central hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010336338.XA CN111487734B (en) | 2020-04-27 | 2020-04-27 | Optical cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010336338.XA CN111487734B (en) | 2020-04-27 | 2020-04-27 | Optical cable |
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| CN111487734A true CN111487734A (en) | 2020-08-04 |
| CN111487734B CN111487734B (en) | 2022-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117784340A (en) * | 2024-02-24 | 2024-03-29 | 常熟迅联光电科技有限公司 | Rectangular optical fiber ribbon cable and rectangular butterfly-shaped lead-in cable |
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