CN218213564U

CN218213564U - Easily stripped multi-core optical cable

Info

Publication number: CN218213564U
Application number: CN202222369137.7U
Authority: CN
Inventors: 杨文文
Original assignee: Wuhan Micro Sensor Technology Co ltd
Current assignee: Wuhan Micro Sensor Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-03
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses an easily stripped multi-core optical cable, which comprises an outer sheath layer, wherein an optical cable reinforcing element layer is filled in the outer sheath layer, and a plurality of tightly sleeved optical fibers are arranged in the optical cable reinforcing element layer; each tight-buffered optical fiber sequentially comprises a polarization-maintaining bare optical fiber, a multifunctional polyacrylate coating layer and a tight-buffered layer from inside to outside; the outer sheath layer wraps the tightly-sleeved optical fibers in the optical cable reinforcing element layer. Easily peel off multi-core optical cable, reasonable in design thinks about ingeniously, through being provided with the high multi-functional polyacrylate dope layer of lubricity between polarization-maintaining bare fiber and tight jacket layer, make tight jacket layer peel off optic fibre very easily, peel off quartic at most and can peel off length requirement and be greater than 7cm, brought the convenience for the use, and do not hinder multi-functional polyacrylate dope layer.

Description

Easily stripped multi-core optical cable

Technical Field

The utility model belongs to the technical field of the optical fiber design, especially, relate to an easily peeled off multicore optical cable.

Background

The multicore optical fiber cable is characterized in that a plurality of fiber cores are arranged in a common cladding region, each fiber core is formed by wrapping a tight jacket layer made of buffer materials outside the optical fiber, and the tight jacket layer is tightly combined with the optical fiber, so that the tight jacket layer is not easy to strip when the end of the optical fiber is connected, which not only brings inconvenience to practical use, but also damages the stripped section of the optical fiber when stripping.

SUMMERY OF THE UTILITY MODEL

The utility model provides an easy multicore optical cable of peeling off to solve the problem of proposing among the above-mentioned background art.

In order to realize the purpose, the utility model adopts the following technical scheme:

an easily stripped multi-core optical cable comprises an outer sheath layer, wherein an optical cable reinforcing element layer is filled in the outer sheath layer, and a plurality of tightly-sleeved optical fibers are arranged in the optical cable reinforcing element layer; each tight-buffered optical fiber sequentially comprises a polarization-maintaining bare optical fiber, a multifunctional polyacrylate coating layer and a tight-buffered layer from inside to outside; the outer sheath layer wraps the tightly sleeved optical fibers in the optical cable reinforcing element layer.

Preferably, the diameter of the polarization maintaining bare fiber is 250um.

Preferably, in this embodiment, the optical cable reinforcing element layer is made of aramid yarn.

Preferably, the number of the tight buffered optical fibers is 2-8.

Preferably, the outer sheath layer is made of low smoke halogen-free flame retardant.

Preferably, the tight-buffered layer is made of TPEE, and the tight-buffered layer is marked with different colors.

Compared with the prior art, the beneficial effects of the utility model are that:

easily peel off multi-core optical cable, reasonable in design thinks about ingeniously, through be provided with the high multi-functional polyacrylate dope layer of lubricity between optic fibre and tight jacket layer, make tight jacket layer peel off optic fibre very easily, peel off quartic at most and can peel off length requirement and be greater than 7cm, brought the convenience for the use, and do not hinder multi-functional polyacrylate dope layer.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic structural diagram of an easy-to-peel multi-core optical cable according to the present invention;

fig. 2 is a schematic side sectional view of an easily stripped multi-core optical cable according to the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. a tight-fitting layer; 2. a multifunctional polyacrylate coating layer; 3. a polarization maintaining bare fiber; 4. an outer jacket layer; 5. a cable strength member layer.

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, an embodiment of the present invention provides an easily stripped multi-core optical cable, which specifically includes an outermost outer sheath layer 4, wherein the outer diameter of the outer sheath layer 4 is 8.0 ± 0.4mm, the thickness is 2.0 ± 0.1mm, the whole is made of low smoke zero halogen flame retardant (LSZH), the outer sheath layer 4 is resistant to-40 ℃ to 80 ℃, the material meets the flame retardant requirement of UL-94V0, and the outer sheath layer 4 cannot crack or crack after being respectively insulated at-40 ℃ to +80 ℃ and at low temperature and high temperature of-40 ℃ and 80 ℃ for 4 hours, thereby protecting the internal optical fiber in an extreme temperature environment. An optical cable reinforcing element layer 5 is filled in the outer sheath layer 4, and a plurality of tightly-sleeved optical fibers are arranged in the optical cable reinforcing element layer 5. In this embodiment, optical cable reinforcing element layer 5 adopts aramid yarn material to make, and aramid yarn has density little, and tensile modulus is very high, and breaking strength is higher and fracture elongation is lower etc. special performance, can strengthen the effect that plays whole protection to its inside tight set optic fibre.

Referring to fig. 1-2, in the present embodiment, 2-8 tight-buffered optical fibers (in the present embodiment, six tight-buffered optical fibers are uniformly circumferentially arranged inside the cable reinforcing member layer 5) are disposed in the cable reinforcing member layer 5. Each tight-buffered optical fiber sequentially comprises a polarization-maintaining bare optical fiber 3, a multifunctional polyacrylate coating layer 2 and a tight-buffered layer 1 from inside to outside. The outer jacket layer 4 tightly surrounds the tight-buffered optical fibers within the cable strength member layer 5.

In this embodiment, the diameter of the polarization maintaining bare fiber 3 is 250um, the multifunctional polyacrylate coating (feikai 503K) is firstly coated on the polarization maintaining bare fiber 3, so that the total outer diameter of the polarization maintaining bare fiber 3 and the multifunctional polyacrylate coating layer 2 reaches 280-300 μm, and then the tight-buffered layer 1 of the colored dupont Hytrel 7246 tight-buffered material is formed.

Wherein, the Hytrel 7246 tight-buffered optical fiber cannot damage the Feykj 503K coating (namely the multifunctional polyacrylate coating layer 2) when the tight-buffered layer 1 with the thickness of 900 μm is stripped, and the strippable length of the tight-buffered optical fiber is required to be more than 7cm after the tight-buffered optical fiber is stripped for four times at most. The polarization maintaining bare fiber 3 cannot be drawn out and rotated in the tight buffered, i.e., the tight buffered fiber is not loose (no excess fiber length).

In this embodiment, each of the tight-buffered layers 1 is marked with a different color (for example, blue, orange, green, brown, gray, white, red, black, etc. can be used). When the optical fiber is manufactured, the 250 mu m polarization-maintaining bare optical fiber 3 is firstly colored with seven colors of conventional ink (the thickness is about 5 mu m), then colored, and then colored with multifunctional polyacrylate coating (FeiKa 503K) which is easy to tightly sleeve and strip to the outer diameter of 280-300 mu m, and then made with standard color Dupont Hytrel 7246 tightly sleeve material, and the colors can be distinguished after the tightly sleeve layer 1 is stripped.

The utility model discloses a concrete theory of operation is:

when the tight-buffered layer 1 is stripped, the multifunctional polyacrylate coating layer 2 with high lubricity is arranged between the optical fiber 3 and the tight-buffered layer 1, so that the optical fiber is easily stripped by the tight-buffered layer 1, the stripping length requirement is more than 7cm at most four times, convenience is brought to use, and the multifunctional polyacrylate coating layer 2 is not damaged.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; all the persons skilled in the art can smoothly implement the present invention as shown in the attached drawings and described above; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. An easy-to-strip multi-core optical cable comprises an outer sheath layer (4), and is characterized in that: an optical cable reinforcing element layer (5) is filled in the outer sheath layer (4), and a plurality of tightly-sleeved optical fibers are arranged in the optical cable reinforcing element layer (5); each tight-buffered optical fiber sequentially comprises a polarization-maintaining bare optical fiber (3), a multifunctional polyacrylate coating layer (2) and a tight-buffered layer (1) from inside to outside; and the outer sheath layer (4) wraps the tightly-sleeved optical fibers in the optical cable reinforcing element layer (5).

2. An easily strippable multicore optical cable according to claim 1, wherein: the diameter of the polarization maintaining bare fiber (3) is 250um.

3. An easily strippable multicore optical cable according to claim 1, wherein: the optical cable reinforcing element layer (5) is made of aramid yarn.

4. An easily strippable multicore optical cable according to claim 1, wherein: the number of the tight-buffered optical fibers is 2-8.

5. An easily stripped multicore optical cable according to claim 1, wherein the outer sheath layer (4) is made of low smoke zero halogen fuel.

6. The easily stripped multi-core optical cable as claimed in claim 1, wherein the tight-buffered layer (1) is made of TPEE, and the tight-buffered layer (1) is marked with different colors.