CN217467289U

CN217467289U - Optical cable

Info

Publication number: CN217467289U
Application number: CN202222091425.0U
Authority: CN
Inventors: 刘亮; 周卫云; 缪小明; 钱铭刚; 沈冰冰; 蔡炜
Original assignee: Jiangsu Zhongtian Technology Co Ltd
Current assignee: Jiangsu Zhongtian Technology Co Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-09-20
Anticipated expiration: 2032-08-10

Abstract

The utility model provides an optical cable. The optical cable includes: a plurality of tight-buffered fibers; the inner sheath is provided with a groove structure; the double-layer sleeve is arranged in the inner sheath, and the periphery of each tightly-wrapped fiber is sleeved with the double-layer sleeve; the water blocking tape is coated on the periphery of the inner sheath; and the outer sheath is coated on the periphery of the water blocking tape. The technical scheme of the utility model optical cable, can solve current optical cable and peel off the problem that the difficulty leads to that the construction degree of difficulty is big, the efficiency of construction is low.

Description

Optical cable

Technical Field

The utility model relates to an optical cable technical field particularly, relates to an optical cable.

Background

The broadband network is a key infrastructure for economic and social development in the information era, accelerates the construction pace of the broadband network, and has important significance for comprehensively improving the informatization level of the country. The FTTH is the development trend of future broadband networks, and the construction of the FTTH network is continuous and deep, so that the research and development of novel optical cables are promoted.

At present, most of existing optical cables are filled with factice, in the process of installation and connection of the optical cables, a covering layer, an armor layer and a protective layer outside the optical fibers need to be stripped firstly, then, paper towels and cleaning agents are used for cleaning the factice of the optical fiber belts, stripping is more labor-consuming and time-consuming, and the difficulty of connection and maintenance is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an optical cable can solve the current optical cable of registering one's residence and peel off the problem that the difficulty leads to the construction degree of difficulty big, the efficiency of construction to hang down.

In order to achieve the above object, according to an aspect of the present invention, there is provided an optical cable including: a plurality of tight-buffered fibers; the inner sheath is provided with a groove structure; the double-layer sleeve is arranged in the inner sheath, and the periphery of each tightly-wrapped fiber is sleeved with the double-layer sleeve; the water blocking tape is coated on the periphery of the inner sheath; and the outer sheath is coated on the periphery of the water blocking tape.

Furthermore, the groove structure is V-shaped and is sunken towards the direction close to the tightly wrapped fiber; and/or two or more groove structures are symmetrically arranged on the inner jacket.

Furthermore, the inner sheath is made of flame-retardant materials, and the outer sheath is made of heat-shrinkable materials.

Furthermore, the optical cable also comprises water-blocking yarns, and the water-blocking yarns are arranged in the groove structures.

Further, the optical cable also comprises a self-supporting structure, and the self-supporting structure is connected to the outer sheath.

Further, self-supporting structure includes first installation department and second installation department, and the second installation department passes through first installation department and connects on the oversheath.

Further, the optical cable further includes a strength member mounted in the second mount portion.

Furthermore, the optical cable also comprises a tearing rope which is embedded in the outer sheath; and/or two or more tearing ropes are arranged in the outer sheath, and the opening of the groove structure faces the tearing ropes.

Furthermore, the optical cable also comprises a reinforcing element, the reinforcing element is arranged in the inner sheath, and the plurality of reinforcing elements and the plurality of groove structures are arranged in a staggered mode along the circumferential direction; and/or the strength member is positioned between the optical fiber structure of the plurality of tight-buffered fibers and the inner jacket.

Use the technical scheme of the utility model, through setting up a plurality of tight package fibre, the inner sheath, the water blocking area, the oversheath, inner sheath and inner sheath have groove structure, a plurality of tight package fibre are installed in the inner sheath, each tight package fine periphery all is equipped with double-deck sleeve pipe, the water blocking area cladding is in the inner sheath periphery, play the effect that blocks water, the oversheath cladding is in the periphery of water blocking area, can enough protect inner structure, can also strengthen the holistic structural strength of optical cable, the inner sheath has groove structure, thus, when the optical cable is installed to needs, peel off behind the oversheath, the staff can concentrate the application of force in groove structure department, can peel off the inner sheath very easily, in order to carry out subsequent maintenance, operation such as continue, the construction degree of difficulty is reduced, the efficiency of construction is improved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:

fig. 1 shows an overall structural diagram of an optical fiber cable for home entry according to an embodiment of the present invention; and

fig. 2 shows a side view of an optical fiber cable for home entry according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. tightly wrapping the fibers; 20. an inner sheath; 21. a groove structure; 22. a reinforcing element; 30. a water blocking tape; 40. an outer sheath; 50. water-blocking yarn; 60. a first mounting portion; 61. a second mounting portion; 70. a reinforcing element; 80. a double-layer sleeve; 90. and (6) tearing the rope.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the utility model provides an optical cable, include: a plurality of tight-packing fibers 10; an inner sheath 20, a plurality of tight-buffered fibers 10 being installed in the inner sheath 20, and the inner sheath 20 having a groove structure 21; the water blocking tape 30 is coated on the periphery of the inner sheath 20; and an outer sheath 40, wherein the outer sheath 40 is coated on the periphery of the water blocking tape 30.

Among the above-mentioned technical scheme, a plurality of tight package fibre 10 are installed in inner sheath 20, the cladding of water blocking tape 30 is in inner sheath 20 periphery, play the effect that blocks water, oversheath 40 cladding is in water blocking tape 30's periphery, can enough protect inner structure, can also strengthen the holistic structural strength of optical cable, furthermore, inner sheath 20 has groove structure 21, thus, when the optical cable is installed to needs, peel off after oversheath 40, because groove structure 21 has increased the lifting surface area, therefore, the staff can locate to concentrate the application of force in groove structure 21, can peel off inner sheath 20 easily, carry out subsequent maintenance, operation such as continue, the construction degree of difficulty is reduced, construction efficiency is improved.

As shown in fig. 1, in an embodiment of the present invention, the optical cable further includes a plurality of double-layer sleeves 80, the double-layer sleeves 80 are installed in the inner sheath 20, and the double-layer sleeves 80 are respectively sleeved on the outer peripheries of the tightly-covered fibers 10.

Among the above-mentioned technical scheme, the periphery of a plurality of tight package fibre 10 all is equipped with double-deck sleeve 80, has better weatherability and tensile resistance.

It should be noted that, in the utility model discloses an embodiment, double-deck sleeve 80 is through double-deck crowded technology of crowded formation altogether with PC and PBT altogether, double-deck sleeve 80's elastic modulus can reach more than 1500MPa, breaking strength reaches more than 40MPa, the fracture elongation reaches more than 90%, the thermal shrinkage factor is less than 5%, double-deck sleeve 80 has taken into account the advantage of original pure PBT pipe and pure PC pipe, double-deck sleeve 80's compressive property is higher than pure PBT pine sleeve, the back shrink is less than pure PBT pine sleeve, ageing-resistant performance and bending property are superior to pure PC pine sleeve, can be fine satisfy optical cable structure's weatherability requirement.

As shown in fig. 1, in an embodiment of the present invention, the groove structure 21 is V-shaped, and the groove structure 21 is recessed toward the tightly wrapped fiber 10; two or more groove structures 21 are symmetrically disposed on the inner sheath 20.

In the technical scheme, the groove structure 21 is V-shaped, and the groove structure 21 is recessed towards the direction close to the tightly-wrapped fiber 10, so that a constructor can apply force to two side surfaces of the V-shaped groove, the opening is gradually enlarged from the recessed part of the V-shaped groove, the inner sheath 20 can be easily stripped off, and the constructor can conveniently perform maintenance and other operations; two or more than two groove structures 21 are symmetrically arranged on the inner sheath 20, so that the construction personnel can conveniently peel off the inner sheath 20 at different positions, and the peeling speed is accelerated.

As shown in fig. 1, in one embodiment of the present invention, the inner sheath 20 is made of flame retardant material, and the outer sheath 40 is made of heat shrinkable material.

Through the arrangement, the flame retardant effect of the optical cable can be ensured, and the weather resistance of the optical cable can be enhanced, so that the optical cable can normally work at the ambient temperature of-40-70 ℃.

Specifically, in an embodiment of the present invention, the inner sheath 20 is made of a low-smoke halogen-free flame-retardant polyolefin material, and the outer sheath 40 is made of a polyethylene material with low shrinkage performance, such as high-density polyethylene, and compared with a conventional polyethylene material, the low shrinkage rate of the outer sheath 40 can be ensured, so that the thermal shrinkage performance of the outer sheath 40 is smaller, and the stability of the optical cable attenuation performance is ensured.

As shown in fig. 1, in an embodiment of the present invention, the optical cable further includes a water blocking yarn 50, and the water blocking yarn 50 is installed in the groove structure 21.

Among the above-mentioned technical scheme, the yarn 50 that blocks water is installed in groove structure 21, can guarantee that the full cross-section of whole structure blocks water, further promotes the effect that blocks water of optical cable, and this structure adopts the full dry-type to block water, can avoid the oleamen to clear away, reduces the optic fibre and continues to connect the time, reduces the use of oleamen sanitizer.

Referring to fig. 1 and 2 in combination, in one embodiment of the present invention, the optical cable further includes a self-supporting structure, and the self-supporting structure is connected to the outer sheath 40.

Through the arrangement, the construction personnel can finish the hanging of the optical cable at one time without additionally arranging other hanging and hanging wires, so that the construction time and the construction cost are saved.

Referring to fig. 1 and 2, in an embodiment of the present invention, the self-supporting structure includes a first mounting portion 60 and a second mounting portion 61, and the second mounting portion 61 is connected to the outer sheath 40 through the first mounting portion 60; the cable further includes a strength member 70, the strength member 70 being mounted within the second mount portion 61.

Among the above-mentioned technical scheme, reinforcing element 70 can strengthen the resistance of optical cable, can bear most tension when the aerial laying, realizes the large distance introduction of optical cable, practices thrift construction cost.

As shown in fig. 1, in an embodiment of the present invention, the optical cable further includes a ripcord 90, and the ripcord 90 is embedded in the outer sheath 40; two or more tear cords 90 are mounted within the outer sheath 40 with the opening of the groove structure 21 facing the tear cords 90.

Through the arrangement, the outer sheath 40 can be stripped by the constructor without the help of external tools by hands, so that the construction efficiency is improved.

As shown in fig. 1, in an embodiment of the present invention, the optical cable further includes a strength member 22, the strength member 22 is installed in the inner sheath 20, and the plurality of strength members 22 and the plurality of groove structures 21 are circumferentially arranged in a staggered manner; the strength members 22 are located between the tight-buffered fiber structure of the plurality of tight-buffered fibers 10 and the inner sheath 20.

In the technical scheme, the reinforcing elements 22 can improve the structural strength of the optical cable, and the plurality of reinforcing elements 22 and the plurality of groove structures 21 are arranged in a staggered manner along the circumferential direction, so that the reinforcing elements 22 can be prevented from interfering stripping operation, and a constructor can conveniently strip the inner sheath 20; the strength members 22 are positioned between the optical fiber structure formed by the plurality of tight-buffered fibers 10 and the inner jacket 20 to provide better protection to the tight-buffered fibers 10 and ensure the transmission performance of the tight-buffered fibers 10.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: through setting up a plurality of tight package fibre, the inner sheath, the water blocking tape, the oversheath, inner sheath and inner sheath have groove structure, a plurality of tight package fibre are installed in the inner sheath, the water blocking tape cladding is in the inner sheath periphery, play the effect that blocks water, the oversheath cladding is in the periphery of water blocking tape, can enough protect the inner structure, can also strengthen the holistic structural strength of optical cable, the inner sheath has groove structure, thus, when needs installation optical cable, peel off behind the oversheath, the staff can concentrate the application of force in groove structure department, can peel off the inner sheath very easily, in order to carry out subsequent maintenance, operation such as continue, the construction degree of difficulty has been reduced, the efficiency of construction is improved.

It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical cable, comprising:

a plurality of tight-packing fibers (10);

the inner sheath (20), a plurality of the tightly packaged fibers (10) are installed in the inner sheath (20), and a groove structure (21) is arranged on the inner sheath (20);

the double-layer sleeve (80) is installed in the inner sheath (20), and the double-layer sleeve (80) is sleeved on the periphery of each tightly wrapped fiber (10);

the water-blocking tape (30) is coated on the periphery of the inner sheath (20); and

an outer sheath (40), wherein the outer sheath (40) covers the periphery of the water blocking tape (30).

2. Optical cable according to claim 1, characterized in that the groove structure (21) is V-shaped, the groove structure (21) being concave towards the tight-buffered fiber (10); or the like, or, alternatively,

two or more groove structures (21) are symmetrically arranged on the inner sheath (20); or the like, or a combination thereof,

the shape of groove structure (21) is V-arrangement, groove structure (21) are to being close to tightly wrap fine (10) direction sunken, and two or more groove structure (21) symmetry sets up on inner sheath (20).

3. Optical cable according to claim 1, characterized in that said inner sheath (20) is made of a flame-retardant material and said outer sheath (40) is made of a heat-shrinkable material.

4. Optical cable according to claim 1, further comprising a water-blocking yarn (50), said water-blocking yarn (50) being mounted within said groove structure (21).

5. Optical cable according to any one of claims 1 to 4, characterized in that it further comprises a self-supporting structure connected to the outer sheath (40).

6. Optical cable according to claim 5, characterized in that the self-supporting structure comprises a first mounting portion (60) and a second mounting portion (61), the second mounting portion (61) being connected to the outer jacket (40) by the first mounting portion (60).

7. Optical cable according to claim 6, characterized in that it further comprises a reinforcing element (70), said reinforcing element (70) being mounted in said second mounting portion (61).

8. Optical cable according to any of claims 1 to 4, further comprising a ripcord (90), the ripcord (90) being embedded within the outer sheath (40); or the like, or, alternatively,

two or more of the tear cords (90) are mounted within the outer sheath (40) with the opening of the groove structure (21) facing the tear cords (90); or the like, or, alternatively,

the optical cable further comprises a tearing rope (90), the tearing rope (90) is embedded in the outer sheath (40), two or more tearing ropes (90) are installed in the outer sheath (40), and the opening of the groove structure (21) faces the tearing rope (90).

9. Optical cable according to any one of claims 1 to 4, further comprising a strength member (22), said strength member (22) being mounted within said inner sheath (20), a plurality of said strength members (22) being circumferentially offset from a plurality of said groove structures (21); or the like, or, alternatively,

the reinforcing element (22) is located between a fibre structure of a plurality of said tight-buffered fibres (10) and the inner sheath (20); or the like, or, alternatively,

the optical cable further comprises a reinforcing element (22), the reinforcing element (22) is installed in the inner sheath (20), the reinforcing element (22) and the groove structures (21) are arranged in a staggered mode along the circumferential direction, and the reinforcing element (22) is located between the optical fiber structures formed by the tightly packaged fibers (10) and the inner sheath (20).