CN216310343U

CN216310343U - Optical cable branching protection structure

Info

Publication number: CN216310343U
Application number: CN202122755080.XU
Authority: CN
Inventors: 林涛
Original assignee: Shenzhen Youngsun Com Optical Fiber Cable Co ltd
Current assignee: Shenzhen Youngsun Com Optical Fiber Cable Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-15
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses an optical cable branching protection structure, which comprises a main optical cable and a plurality of sub optical cables branched by the main optical cable, wherein a branching device is sleeved outside the branching position of the main optical cable and the plurality of sub optical cables; the main optical cable consists of a first coating layer, a first tension resisting element positioned in the first coating layer, a first armor pipe positioned in the first tension resisting element and a plurality of first single-core optical fibers positioned in the first armor pipe; the sub optical cable consists of a second cladding, a second armor pipe positioned in the second cladding, a second tension resisting element positioned in the second armor pipe and a second single-core optical fiber positioned in the second tension resisting element; because first anti tension element is located between first cladding and the first armour pipe, consequently can effectively utilize gun of first anti tension element to move, make optic fibre have sufficient free activity space in the main optical cable to guaranteed that optic fibre has enough surplus length and satisfied various service environment, and then guaranteed the optical property and the signal transmission effect of optic fibre.

Description

Optical cable branching protection structure

Technical Field

The utility model belongs to the technical field of optical cable communication connection, and particularly relates to an optical cable branching protection structure.

Background

In the existing multi-core optical cable transmission line structure, a branch line needs to be led out of a single-core optical cable from a main optical cable, a main optical cable jacket can be cut off at the branch line position, the single-core optical cable is pulled out through a branch line device, and the branch line device is sleeved at the branch line position of the main optical cable and the single-core optical cable and is encapsulated by glue.

The existing branch structure has the following defects:

when the optical cable is used, enough extra length of the optical fiber needs to be ensured so that the optical fiber can move freely, and the optical performance of optical fiber transmission is ensured, but in the existing structure, the optical fiber in the optical cable at the glue pouring position is fixed due to glue pouring encapsulation at the branching position of the main cable and the sub-cable, so that the optical performance of the optical fiber cannot be ensured, and the signal transmission effect of the optical fiber is influenced;

and secondly, the tension resisting element of the single-core optical cable in the existing structure is arranged in the coating layer of the sub-optical cable, and the tension resisting element can shift, so that the outer coating layer is difficult to realize fixed length, and the length of the single-core optical cable is uncontrollable when branching is manufactured, so that the problem of poor length consistency of the branch sub-optical cable can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an optical cable branching protection structure to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an optical cable branching protection structure comprises a main optical cable and a plurality of sub optical cables branched by the main optical cable, wherein a branching device is sleeved outside the branching position of the main optical cable and the plurality of sub optical cables;

the main optical cable consists of a first coating layer, a first tension resisting element positioned in the first coating layer, a first armor pipe positioned in the first tension resisting element and a plurality of first single-core optical fibers positioned in the first armor pipe;

the sub optical cable consists of a second cladding, a second armor pipe positioned in the second cladding, a second tension resisting element positioned in the second armor pipe and a second single-core optical fiber positioned in the second tension resisting element;

the deconcentrator comprises a thermal plastic pipe, a branching body and a pressure ring sleeve, wherein the pressure ring sleeve is correspondingly sleeved outside a main optical cable segment at the branching position of the main optical cable and the plurality of sub optical cables.

Preferably, the branching body is correspondingly sleeved outside the pressure ring sleeve and wraps the outer sides of the main optical cable segment and the sub optical cable segment at the branching position of the main optical cable and the plurality of sub optical cables; the thermoplastic rubber tube is sleeved on the outer side of the wire separating body.

Preferably, the thermoplastic pipe is a tubular body with a middle diameter larger than diameters of two ends, and the shunt body is located at the middle part in the thermoplastic pipe.

Preferably, the pressure ring sleeve is a metal sleeve.

Preferably, the second single-core optical fiber is connected with the first single-core optical fiber into a whole.

Preferably, the first coating layer comprises a first layer body, a second layer body and supporting protrusions filled in the first layer body and the second layer body.

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

1. the main optical cable section is of a structure from outside to inside comprising a first coating layer, a first tension resisting element, a first armor pipe and a plurality of first single-core optical fibers, a pressure ring sleeve compressed with the first coating layer is sleeved on the outer side of the main optical cable section, the sub optical cable section is not provided with the pressure ring sleeve, and the first tension resisting element is positioned between the first coating layer and the first armor pipe, so that gun movement of the first tension resisting element can be effectively utilized, the optical fibers in the main optical cable have enough free movement space, the optical fibers are ensured to have enough surplus length to meet various use environments, and further the optical performance and the signal transmission effect of the optical fibers are ensured;

2. the sub-optical cable section is of an outside-in structure comprising a second coating layer, a second armor pipe, a second tensile element and a second single-core optical fiber, wherein the second single-core optical fiber and aramid fiber are positioned in the second armor pipe, the second armor pipe and the second coating layer are integrated and fixed with a thermoplastic rubber pipe, so that the length of the second coating layer on the outer layer can be fixed, the length of each second single-core optical fiber can be controlled during branching, and the length consistency of the branch sub-optical cable can be effectively ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention;

fig. 4 is a cross-sectional view of a first cladding of the present invention.

In the figure: 100. a main optical cable; 101. a first single-core optical fiber; 102. a first armor tube; 103. a first tensile element; 104. a first cladding layer; 200. a wire divider; 201. a hot plastic tube; 202. dividing a wire body; 203. pressing a ring sleeve; 300. a sub-cable; 301. a second cladding layer; 302. a second armor tube; 303. a second tension resisting element; 304. a second single core optical fiber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: an optical cable branching protection structure comprises a main optical cable 100 and a plurality of sub optical cables 300 branched by the main optical cable 100, wherein a branching device 200 is sleeved outside the branching position of the main optical cable 100 and the plurality of sub optical cables 300;

the main optical cable 100 is composed of a first coating layer 104, a first tension resisting element 103 located in the first coating layer 104, a first armor tube 102 located in the first tension resisting element 103, and a plurality of first single-core optical fibers 101 located in the first armor tube 102, wherein the first tension resisting element 103 and the second tension resisting element 303 are aramid fibers, and the main optical cable section is of a first coating layer, a first tension resisting element, a first armor tube and a plurality of first single-core optical fibers from outside to inside structure, and because the first tension resisting element 103 is located between the first coating layer 104 and the first armor tube 102, the gun movement of the first tension resisting element 103 can be effectively utilized, so that the optical fibers in the main optical cable 100 have enough free movement space, thereby ensuring that the optical fibers have enough surplus length to meet various use environments, and further ensuring the optical performance and the signal transmission effect of the optical fibers;

the sub-optical cable 300 is composed of a second cladding layer 301, a second armor tube 302 positioned in the second cladding layer 301, a second tensile member 303 positioned in the second armor tube 302, and a second single-core optical fiber 304 positioned in the second tensile member 303, wherein the second cladding layer 301 is an outer skin made of an insulating material, the second single-core optical fiber 304 and aramid fiber are positioned in the second armor tube 302, and the second armor tube 302 and the second cladding layer 301 are integrally formed and fixed with the thermoplastic tube 201, so that the length of the second cladding layer 301 on the outer layer can be fixed, and when a branching line is manufactured, the length of each second single-core optical fiber 304 can be controlled, and the length consistency of the branching sub-optical cable can be effectively ensured;

the splitter 200 includes a thermoplastic pipe 201, a splitting body 202 and a pressure ring sleeve 203, and the pressure ring sleeve 203 is correspondingly sleeved outside the main optical cable 100 segment at the splitting position of the main optical cable 100 and the plurality of sub optical cables 300.

In this embodiment, preferably, the wire dividing body 202 is correspondingly sleeved outside the pressure ring sleeve 203, and covers the outside of the main optical cable 100 segment and the outside of the sub optical cables 300 segment at the wire dividing positions of the main optical cable 100 and the plurality of sub optical cables 300; the thermoplastic pipe 201 is sleeved outside the wire distribution body 202.

In this embodiment, it is preferable that the thermoplastic pipe 201 is a tubular body having a larger diameter at the middle than at the two ends, and the branch body 202 is located at the middle portion inside the thermoplastic pipe 201.

In this embodiment, the pressure ring sleeve 203 is preferably a metal sleeve.

In this embodiment, it is preferable that the second single core optical fiber 304 is integrally connected to the first single core optical fiber 101, and the second single core optical fiber 304 and the first single core optical fiber 101 are the same optical fiber.

In this embodiment, the first coating layer 104 preferably includes a first layer 1041, a second layer 1042, and a supporting protrusion 1043 filled in the first layer 1041 and the second layer 1042.

The working principle and the using process of the utility model are as follows: when the utility model is used, the protection capability of the first cladding layer 104 is improved by the supporting protrusions 1043, and meanwhile, when the first layer 1041 is damaged, secondary protection can be performed by the supporting protrusions 1043.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An optical cable branching protection structure is characterized in that: the optical cable comprises a main optical cable (100) and a plurality of sub optical cables (300) branched by the main optical cable (100), wherein a branching device (200) is sleeved outside the branching position of the main optical cable (100) and the plurality of sub optical cables (300);

the main optical cable (100) is composed of a first coating layer (104), a first tension resisting element (103) positioned in the first coating layer (104), a first armor tube (102) positioned in the first tension resisting element (103), and a plurality of first single-core optical fibers (101) positioned in the first armor tube (102);

the sub-optical cable (300) is composed of a second coating layer (301), a second armor tube (302) positioned in the second coating layer (301), a second tension resisting element (303) positioned in the second armor tube (302), and a second single-core optical fiber (304) positioned in the second tension resisting element (303);

the splitter (200) comprises a thermoplastic pipe (201), a splitting body (202) and a pressure ring sleeve (203), wherein the pressure ring sleeve (203) is correspondingly sleeved outside a main optical cable (100) section at the splitting position of the main optical cable (100) and the plurality of sub optical cables (300); the wire distributing body (202) is correspondingly sleeved outside the pressure ring sleeve (203) and coats the outer side of the main optical cable (100) section and the outer side of the sub optical cable (300) section at the wire distributing position of the main optical cable (100) and the plurality of sub optical cables (300); the hot plastic pipe (201) is sleeved outside the wire distributing body (202); the hot plastic pipe (201) is a tubular body with the diameter of the middle part larger than the diameters of the two ends, and the wire splitting body (202) is positioned in the middle part in the hot plastic pipe (201); the pressure ring sleeve (203) is a metal sleeve; the second single-core optical fiber (304) is connected with the first single-core optical fiber (101) into a whole; the first coating layer (104) comprises a first layer body (1041), a second layer body (1042) and supporting protrusions (1043) filled in the first layer body (1041) and the second layer body (1042).