CN214750971U - Leading-in optical cable - Google Patents

Abstract

The utility model discloses an introducing optical cable, including the sheath, the inside coaxial butterfly sheath that is equipped with of sheath, the cladding has the yarn that blocks water including enclosing the butterfly sheath on the internal perisporium, it has the glass yarn to block water to fill between yarn and the butterfly sheath, the cladding has a plurality of optic fibre that lie in its center and a pair of symmetrical position in the both sides of optic fibre and arranges the enhancement core on same straight line with optic fibre in the butterfly sheath, set up the both sides of a pair of symmetrical position in the enhancement core and the recess of directional optic fibre in the periphery of sheath, wear to be equipped with a pair ofly and the corresponding reinforcement of recess along the axial on the sheath. The utility model provides a how to enable the technical problem that same introducing optical cable satisfied the difference of aerial, pipeline and indoor introduction simultaneously and used the scene demand, it is high to have the efficiency of construction, the construction degree of difficulty is low, construction strength, construction convenience and construction cost low grade advantage.

Description

Leading-in optical cable

Technical Field

The utility model belongs to the technical field of the optical communication technique and specifically relates to indicate an introducing optical cable.

Background

Currently, the optical fiber cables are classified into three major categories, that is, butterfly-shaped optical fiber cables for indoor introduction, self-supporting butterfly-shaped optical fiber cables for outdoor aerial introduction, and butterfly-shaped optical fiber cables for outdoor pipeline introduction, according to the construction and application scenarios. In FTTH network construction, the environment is comparatively complicated, all adopts the mode of heterogeneous leading-in optical cable combination class among the prior art in order to satisfy laying of optical cable circuit, and is obvious, and the leading-in optical cable of different grade type needs to be connected, and this not only makes the efficiency of construction low, and the construction degree of difficulty is big, and the construction intensity is high, owing to increase the tie point in addition, so lead to the construction inconvenient, construction cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that will solve lies in how to enable the different application scene demands that same introducing optical cable satisfied simultaneously maked somebody a mere figurehead, pipeline and indoor introduction.

For solving the technical problem, the utility model provides an introducing optical cable, the protective sheath comprises a sheath, the cladding has on the inside coaxial butterfly sheath that is equipped with of sheath, the internal perisporium with the butterfly sheath encloses the yarn that blocks water including establishing, block water the yarn with it has the glass yarn to fill between the butterfly sheath, the cladding has a plurality of optic fibre and a pair of symmetrical position that are located its center in the butterfly sheath the both sides of optic fibre and with the enhancement core of optic fibre arrangement on same straight line, seted up a pair of symmetrical position in the periphery of sheath the both sides of enhancement core and directional the recess of optic fibre, wear to be equipped with a pair ofly along the axial on the sheath with the corresponding reinforcement of recess.

In an embodiment of the present invention, a pair of tearing ropes symmetrically located on two sides of the butterfly-shaped sheath is further disposed between the sheath and the butterfly-shaped sheath.

In an embodiment of the present invention, the butterfly sheath is further covered with an armor layer which encloses the optical fiber and is located between the pair of the reinforced cores.

In an embodiment of the present invention, the butterfly sheath is further covered with a shielding layer which encloses the optical fiber and is located between the pair of the reinforcing cores.

In an embodiment of the present invention, the shielding layer is tinfoil.

In an embodiment of the present invention, the groove is V-shaped.

In one embodiment of the present invention, the reinforcing core is made of aramid fiber material.

In one embodiment of the present invention, the butterfly sheath is made of a low smoke zero halogen flame retardant elastic material.

In one embodiment of the present invention, the sheath is made of a high density polyethylene material.

In an embodiment of the present invention, the reinforcement is a steel wire.

Compared with the prior art, the technical scheme of the utility model have following advantage: the sheath with the water blocking yarns is sleeved on the inner peripheral wall of the butterfly-shaped sheath, the butterfly-shaped sheath is internally provided with the optical fibers and the pair of reinforcing cores are symmetrically distributed on the opposite sides of the optical fibers, the glass yarns are filled between the water blocking yarns and the butterfly-shaped sheath, and the pair of reinforcing pieces corresponding to the grooves of the butterfly-shaped sheath penetrate through the sheath along the axial direction, so that one leading-in optical cable can meet the requirements of different application scenes of overhead, pipelines and indoor leading-in at the same time, the connection process is reduced, the construction efficiency is improved, the construction difficulty is reduced, the strength is increased, and the construction cost is reduced.

Drawings

In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which

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

the specification reference numbers indicate: 1. sheath, 2, butterfly-shaped sheath, 21, groove, 3, water blocking yarn, 4, glass yarn, 5, optical fiber, 6, reinforced core, 7, reinforcer, 8 and tearing rope.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, a drop cable includes a sheath 1, and in this embodiment, the sheath 1 is made of a high density polyethylene material. The inside coaxial butterfly sheath 2 that is equipped with of sheath 1, the internal perisporium go up the cladding have with butterfly sheath 2 enclose establish including the yarn 3 that blocks water, the setting of the yarn 3 that blocks water makes water resistance good, the packing has glass yarn 4 between yarn 3 and the butterfly sheath 2 that blocks water, the setting of glass yarn 4 makes the fire resistance good to play certain effect that prevents the mouse and destroy. The butterfly-shaped sheath 2 is internally covered with a plurality of optical fibers 5 positioned in the center and a pair of reinforcing cores 6 symmetrically positioned on two sides of the optical fibers 5 and arranged on the same straight line with the optical fibers 5, wherein the reinforcing cores 6 are made of aramid fiber materials in the embodiment. The periphery of the sheath 1 is provided with a pair of grooves 21 which are symmetrically positioned at two sides of the reinforced core 6 and point to the optical fiber 5, and the grooves 21 are V-shaped. A pair of reinforcing members 7 corresponding to the grooves 21 are axially inserted into the sheath 1, and in this embodiment, the reinforcing members 7 are steel wires. Through the structure, the lead-in optical cable can meet the requirements of different application scenes of overhead, pipeline and indoor lead-in at the same time, thereby reducing the connection process, improving the construction efficiency and reducing the construction difficulty, strength and construction cost.

In a preferred embodiment of the present invention, a pair of tear ropes 8 symmetrically disposed on both sides of the butterfly sheath 2 is further disposed between the sheath 1 and the butterfly sheath 2, so as to further improve the convenience of construction.

In a preferred embodiment of the present invention, the butterfly-shaped sheath 2 is further wrapped with an armor layer enclosing the optical fiber 5 and located between the pair of strength cores 6, so as to improve the defense force of the drop cable against birds and insects.

In a preferred embodiment of the present invention, the butterfly-shaped sheath 2 is further wrapped with a shielding layer enclosing the optical fiber 5 and located between the pair of strength cores 6, and the shielding layer is made of tinfoil, so that the transmission performance of the optical fiber drop cable is good.

In a preferred embodiment of the present invention, the butterfly sheath 2 is made of low smoke halogen-free flame retardant elastic material, so that the optical fiber cable has good flame retardant performance.

To sum up, the utility model discloses an establish internal perisporium cladding at the butterfly sheath 2 outer coaxial sleeves of the enhancement core 6 of 5 opposite sides of optic fibre at internal a plurality of optic fibre 5 and a pair of symmetric distribution and have the sheath 1 of the yarn 3 that blocks water, and pack glass yarn 4 between yarn 3 and the butterfly sheath 2 that blocks water, the corresponding reinforcement 7 of recess 21 of a pair of and butterfly sheath 2 is worn to be equipped with along the axial on sheath 1, thereby make this introduction optical cable can satisfy makedly simultaneously that built on stilts, pipeline and indoor different application scene demands of introducing, it is high to have the efficiency of construction, the construction degree of difficulty is low, the construction strength is low, construction convenience and construction cost low grade advantage.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (10)

1. The utility model provides a drop cable, its characterized in that, includes the sheath, the inside of sheath is coaxial be equipped with butterfly sheath, go up the cladding on the internal perisporium have with the butterfly sheath encloses the yarn that blocks water including establishing, block water the yarn with it has the glass yarn to fill between the butterfly sheath, the cladding has a plurality of optic fibre and a pair of symmetrical position that are located its center in the butterfly sheath the both sides of optic fibre and with the optic fibre arranges the enhancement core on same straight line, seted up a pair of symmetrical position in the periphery of sheath the both sides of strengthening the core and pointing to the recess of optic fibre, wear to be equipped with a pair ofly along the axial on the sheath with the corresponding reinforcement of recess.

2. The drop cable of claim 1, wherein a pair of ripcords are disposed symmetrically on opposite sides of the butterfly sheath between the sheath and the butterfly sheath.

3. The drop cable of claim 1, wherein the butterfly jacket is further sheathed with an armor layer enclosing the optical fiber between the pair of strength cores.

4. The drop cable of claim 1, wherein the butterfly jacket is further encased by a shield layer that surrounds the optical fibers and is positioned between the pair of strength members.

5. The drop cable of claim 4, wherein the shielding layer is tinfoil.

6. The drop cable of claim 1, wherein the groove is V-shaped.

7. The drop cable of claim 1, wherein the strength member is made of an aramid fiber material.

8. The drop cable of claim 1, wherein the butterfly jacket is made of a low smoke, zero halogen, flame retardant elastomeric material.

9. The drop cable of claim 1, wherein the jacket is made of a high density polyethylene material.

10. The drop cable of claim 1, wherein the strength members are steel wires.

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