CN210243911U

CN210243911U - Miniature nonmetal rat-proof flame-retardant leading-in optical cable

Info

Publication number: CN210243911U
Application number: CN201920690654.XU
Authority: CN
Inventors: Songtao Zhu; 朱松涛; Qingbao Zhang; 张青豹; Qiaoxin Xian; 冼乔信; Peng Wang; 王朋
Original assignee: Grand Ease Communication Cable Co ltd
Current assignee: Grand Ease Communication Cable Co ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-04-03
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a micro nonmetal rat-proof flame-retardant leading-in optical cable, which comprises a sheath, a central loose tube and an optical fiber from outside to inside in sequence; thixotropic optical fiber filling ointment is arranged in the central loose sleeve; glass fiber yarns are arranged between the central loose tube and the sheath; at least one water-blocking yarn is arranged in the glass fiber yarn. Compared with the prior art, the utility model has the advantages of light in weight, small size, flame-retardant, protection against rodents, tensile, bending resistance and anti-shear property are strong.

Description

Miniature nonmetal rat-proof flame-retardant leading-in optical cable

Technical Field

The utility model relates to an introducing optical cable technical field especially relates to a fire-retardant introducing optical cable of miniature nonmetal protection against rodents.

Background

At present, 5G network commercial service is tried on and operated, and is gradually popularized and applied, each large operator provides new and more rigorous requirements for improving system bandwidth, reducing system cost and optical cable products, the popularization of an optical fiber network is favorable for thousands of households, and the requirements of household optical cables are in a blowout state. At present, optical cables are introduced in the market in various structures, various choices are provided for introducing wiring, but the small size, low cost and high quality are still important targets sought by operators and manufacturers, and in order to further improve the competitive capacity of enterprises, the structure, size and characteristics of the optical cables need to be continuously optimized on the premise of meeting the use requirements, so that the optical cables can better adapt to market demands, and market and profit support is provided for enterprises.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve the above-mentioned problem that prior art exists and provide, the utility model provides a small, the quality of external diameter is light, low in manufacturing cost's fire-retardant introducing optical cable of miniature nonmetal protection against rodents.

The utility model discloses a realize through following technical scheme: a miniature nonmetal rat-proof flame-retardant leading-in optical cable comprises a sheath, a central loose tube and an optical fiber from outside to inside in sequence;

thixotropic optical fiber filling ointment is arranged in the central loose sleeve;

glass fiber yarns are arranged between the central loose tube and the sheath;

at least one water-blocking yarn is arranged in the glass fiber yarn.

Furthermore, the glass fiber yarns are evenly distributed with water-blocking yarns along the circumferential direction.

Preferably, the water-blocking yarns are arranged in the same layer and distributed in the glass fiber yarns.

Further, the central loose tube is of a central bundle tube structure.

Preferably, the sheath is made of a black low smoke halogen-free flame retardant material.

Further, the sheath is of a pipe sleeve structure, and the outer diameter of the pipe sleeve structure is smaller than or equal to 4 mm.

Preferably, the glass fiber yarn is provided with a tear cord, and the tear cord is axially arranged between the glass fiber yarn and the sheath.

Further, the glass fiber reinforced plastic composite material further comprises a tearing rope, wherein the tearing rope is axially arranged in the glass fiber yarns and is close to the sheath.

Preferably, at least one tear string is provided.

Compared with the prior art, the utility model discloses a glass fiber yarn and the combination of the yarn that blocks water have replaced the metal band layer in traditional optical cable, have improved the waterproof performance of optical cable effectively, have simultaneously waterproof, tensile, the external diameter is little, light in weight, low in manufacturing cost and construction convenience etc. advantage.

Drawings

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

Detailed Description

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, a micro nonmetal rat-proof flame-retardant leading-in optical cable comprises a sheath 7, a central loose tube 3 and an optical fiber 1 from outside to inside in sequence; thixotropic optical fiber filling ointment 2 is arranged in the central loose tube 3; a glass fiber yarn 4 is arranged between the central loose tube 3 and the sheath 7; at least one water blocking yarn 5 is arranged in the glass fiber yarn 4. The glass fiber yarn has good longitudinal tensile property, and the short glass fiber can pierce oral mucosa of rodents (including mice) and protect optical fibers in the cable from being damaged by the mice, so that the whole optical cable has good rat-proof property.

In order to improve the waterproof performance of the whole optical cable, the glass fiber yarns 4 are designed with water blocking yarns 5 along the circumferential direction.

Wherein, the water blocking yarn 5 is evenly arranged along the axial direction of the optical cable.

For the convenience of processing, the water blocking yarns 5 are arranged in the glass fiber yarns 4 and distributed in the same layer.

The central loose tube 3 is of a central beam tube structure, and the optical fiber is placed in the central beam tube structure, so that the optical fiber bundle has the advantages of small outer diameter, light weight and low manufacturing cost.

In order to be suitable for indoor and outdoor laying environments, the sheath 7 is made of a black low smoke halogen-free flame retardant material (LSZH).

The sheath 7 made of the black low-smoke halogen-free flame-retardant material (LSZH) has good tensile property and flame retardant property.

The sheath 7 is of a pipe sleeve structure, the outer diameter of the pipe sleeve structure is smaller than or equal to 4mm, the outer diameter of the whole optical cable is small, and construction is facilitated.

The utility model discloses still including tearing rope 6.

Embodiments of the tear string: the tear string 6 is axially disposed between the fiberglass yarn 4 and the jacket 7.

Wherein, in order to find the tearing rope more quickly, the tearing rope is provided with at least one and has color (such as red).

Compared with the prior art, the utility model discloses a glass fiber yarn and the combination of the yarn that blocks water have replaced the metal band layer in traditional optical cable, have improved the water resistance of optical cable effectively, have simultaneously waterproof, tensile, the external diameter is little, light in weight, low in manufacturing cost and construction convenience etc. advantage.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. A miniature nonmetal rat-proof flame-retardant leading-in optical cable is characterized in that: the optical fiber cable comprises a sheath, a central loose tube and an optical fiber from outside to inside in sequence;

glass fiber yarns are arranged between the central loose tube and the sheath;

at least one water-blocking yarn is arranged in the glass fiber yarn.

2. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: and water-blocking yarns are uniformly distributed on the glass fiber yarns along the circumferential direction of the glass fiber yarns.

3. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: the water blocking yarns are arranged in the glass fiber yarns and distributed in the same layer.

4. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: the central loose tube is of a central beam tube structure.

5. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: the sheath is made of black low-smoke halogen-free flame-retardant material.

6. The micro nonmetallic rat-proof flame-retardant drop cable according to claim 1 or 5, characterized in that: the sheath is of a pipe sleeve structure, and the outer diameter of the pipe sleeve structure is smaller than or equal to 4 mm.

7. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: the glass fiber yarn sheath is characterized by further comprising a tearing rope, wherein the tearing rope is axially arranged between the glass fiber yarn and the sheath.

8. The micro non-metallic ratproof flame-retardant drop cable of claim 1, wherein: the glass fiber yarn tearing device is characterized by further comprising a tearing rope, wherein the tearing rope is axially arranged in the glass fiber yarn and is close to the sheath.

9. The micro nonmetallic rat-proof flame-retardant drop cable according to claim 7 or 8, characterized in that: at least one tearing rope is arranged.