CN204882990U - FTTH butterfly optical cable - Google Patents

Abstract

The utility model relates to an FTTH butterfly optical cable. The purpose is to provide an optical cable that can meet more installation requirements, and also has the characteristics of high fiber utilization, convenient installation, and good tensile strength. There is no need to lay additional steel wires for outdoor installation. The technical solution is: FTTH butterfly optical cable, which includes a self-supporting line and two butterfly optical cables arranged in parallel on both sides of the self-supporting line; between the outer sheath of the self-supporting line and the sheath of the butterfly optical cable Connected as a whole through the connecting part; a self-supporting steel wire or steel strand is arranged in the outer sheath of the self-supporting line; it is characterized in that: there are two optical fibers arranged in parallel up and down in the sheath of the butterfly optical cable and There are two strength members on both sides of the optical fiber, and a groove extending along the length of the cable is formed on both sides of the sheath to facilitate tearing of the sheath.

Description

FTTH butterfly cable

technical field

The utility model relates to a communication component, in particular to an FTTH butterfly optical cable.

Background technique

Due to the advantages of small size, low cost, good bending performance and convenient laying, butterfly optical cables are widely used in intelligent buildings, digital communities, campus networks and local area networks. However, there is only one optical fiber inside the existing butterfly optical cable, which often cannot meet the requirements during use; at the same time, it is usually necessary to lay steel cables for overhead support before installing the butterfly optical cable outdoors, and the installation process is relatively cumbersome.

Utility model content

The purpose of this utility model is to overcome the above-mentioned deficiencies in the background technology, and provide a FTTH butterfly optical cable, which can meet more installation requirements, and also has the characteristics of high fiber utilization rate, convenient installation and good tensile strength. There is no need to lay additional steel wires during installation.

The technical scheme of the utility model is:

FTTH butterfly optical cable, which includes a self-supporting line and two butterfly optical cables arranged in parallel on both sides of the self-supporting line; the outer sheath of the self-supporting line and the sheath of the butterfly optical cable are connected through a connecting part One body; a self-supporting steel wire or a steel strand is arranged in the outer sheath of the self-supporting line; it is characterized in that: there are two optical fibers arranged in parallel up and down in the sheath of the butterfly optical cable and located on both sides of the optical fiber There are two reinforcements, and each side of the sheath is made with a groove extending along the length of the cable to facilitate tearing the sheath.

The reinforcements are steel wires or FRP reinforcements.

The thickness of the connecting part is 1-3mm.

Both the sheath and the outer sheath are made of low-smoke, halogen-free retardant fuel.

Both the steel wire and the self-supporting steel wire are phosphating steel wires.

The beneficial effects of the utility model are:

Each butterfly optical cable in the utility model is equipped with two optical fibers, thereby improving the utilization rate of the optical fibers, meeting the requirements of use, and very convenient to install; moreover, the utility model is also provided with a Self-supporting wires, no need to pre-lay steel wires during outdoor installation, which simplifies the installation process and improves installation efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a cross section of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings of the description, but the utility model is not limited to the following embodiments.

As shown in Figure 1, the FTTH butterfly cable includes a self-supporting line and two butterfly cables arranged in parallel on both sides of the self-supporting line.

The self-supporting wire includes a self-supporting steel wire 21 (or steel strand) and an outer sheath 22 wrapped outside the self-supporting steel wire; the self-supporting steel wire is phosphating steel wire and the outer sheath adopts low-smoke, halogen-free material; the self-supporting line can effectively improve the tensile strength of the self-supporting double-butterfly optical cable.

Each butterfly cable includes two optical fibers 11 and two strength members 13 extending in the same direction, and a sheath 12 wrapped outside the fibers and the strength members; the two optical fibers are arranged in parallel up and down at the center of the sheath, The reinforcements are respectively arranged on both sides of the optical fiber (the left and right directions in the figure); the reinforcements are steel wires (preferably phosphating steel wires) or FRP reinforcements, and the sheath is made of low-smoke, halogen-free flame retardant.

The sheath of each butterfly cable is a strip-shaped extension, and the two sides of the sheath (the upper and lower surfaces in the figure) are respectively shaped on a groove 14 extending in the length direction to facilitate tearing the sheath; Force on both sides of the sheath (both sides of the side groove) in different directions can force the line direction of the upper and lower grooves (shown as A in the figure) to break and separate the sheaths on both sides, thereby peeling off the Center of the fiber optic.

The structure of the butterfly optical cable is similar to that of the existing butterfly optical cable, so the existing optical fiber connector can be easily installed; the only difference is that in order to improve the utilization rate of the optical fiber and meet greater demand, the butterfly optical cable The internal arrangement of the two optical fibers.

The self-supporting line extends in the same direction as the butterfly optical cable, and the two butterfly optical cables are respectively arranged on both sides of the self-supporting line. The outer sheath of the self-supporting line and the sheath of the butterfly cable are connected as a whole through a connecting part 3; the thickness of the connecting part is generally 1-3mm, which is less than the thickness of the butterfly cable, so that the connecting part can be reduced. Strong structural strength, when pulled by external force, the connecting part can be broken first, to ensure the self-supporting wire stripping during installation; when two butterfly optical cables are pinched and pulled to both sides, the connecting part will break in the length direction , the butterfly cable and the self-supporting line are separated from each other.

Claims (5)

1.FTTH butterfly optical cable, this optical cable comprises a self-supporting line and two butterfly optical cables arranged in parallel on both sides of the self-supporting line; the outer sheath (22) of the self-supporting line and the sheath (22) of the butterfly optical cable 12) are connected as a whole through the connecting part (3); a self-supporting steel wire (21) or steel strand is arranged in the outer sheath of the self-supporting line; it is characterized in that: the sheath of the butterfly optical cable There are two optical fibers (11) arranged in parallel up and down and two strengthening members (13) on both sides of the optical fibers, and each side of the sheath is made with a groove extending along the length of the cable to facilitate tearing the sheath (14). 2. The FTTH butterfly cable according to claim 1, wherein the reinforcing member is a steel wire or FRP reinforcing member. 3. The FTTH butterfly cable according to claim 2, characterized in that: the thickness of the connecting part is 1-3mm. 4. The FTTH butterfly cable according to claim 3, characterized in that: both the sheath and the outer sheath are made of low-smoke, halogen-free flame retardant. 5. The FTTH butterfly cable according to claim 4, characterized in that: both the steel wire and the self-supporting steel wire are phosphating steel wires.