CN210488076U

CN210488076U - Reinforced leading-in optical cable

Info

Publication number: CN210488076U
Application number: CN201921751372.2U
Authority: CN
Inventors: 王杨; 陈卫东; 张桂林; 张洪雷; 丛晓红; 王江山; 周双双; 任建飞; 陈宁; 李夜城
Original assignee: Hongan Group Co Ltd
Current assignee: Hongan Group Co Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-05-08
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a strenghthened type introducing optical cable, including optic fibre unit, reinforcement, butterfly sheath, band layer, surrounding layer sheath, optic fibre unit sets up in butterfly sheath center, the reinforcement sets up respectively in the both wings of butterfly sheath, be provided with V type groove respectively on the both sides surface of butterfly sheath, band layer and surrounding layer sheath are the cladding in the butterfly sheath outside in proper order, the surrounding layer sheath is in the surface that V type groove corresponds the position is provided with peels off the groove, in both sides all be provided with in the V type groove and tear the rope. The utility model discloses an optical cable is introduced to strenghthened type strengthens the protection to V type groove department, and butterfly shape optical cable V type groove protection is weak among the solution prior art, is easily by tearing problem to also prevent that the insect from laying eggs at V type inslot and to the destruction of optical cable.

Description

Reinforced leading-in optical cable

Technical Field

The utility model relates to an optical cable manufacturing field, concretely relates to strenghthened type optical drop cable.

Background

With the vigorous development of FTTH, the broad band Chinese strategy is fully developed. Butterfly-shaped leading-in optical cables are widely used in cities and villages in China.

At present, the butterfly-shaped optical cable is taken as a traditional user access optical cable and plays an extremely important role in establishing networks such as an intelligent building, a digital cell, a campus network, a local area network and the like. The flexible design is carried out according to the application environment and the laying conditions, the characteristics of indoor flexible optical cables and self-supporting optical cables are collected, and the optical fibers can be connected to the home and the desktop by matching with an indoor junction box, a quick connector and an optical fiber panel, so that the engineering construction efficiency is improved, and the construction cost is saved.

The traditional butterfly-shaped leading-in optical cable is difficult to avoid the curling, twisting or uneven stress of the optical cable in construction in urban areas, suburbs and rural areas with dense trees, when the situation occurs, the most stress concentrated place of the traditional butterfly-shaped leading-in optical cable is just the connecting point corresponding to the grooving positions at two sides, the connecting point is right opposite to the optical fiber, the measure for protecting the optical fiber is quite weak, and the protection of the optical fiber is extremely poor because other materials are not used except a very thin protective layer.

The design of the groove is originally to be beneficial to stripping the optical cable and taking out the optical fiber, but the groove is easy to be stressed and torn by itself in the construction process, and water seepage is easy to occur to cause the hydrogen loss of the optical fiber, so that the attenuation coefficient of the optical fiber is increased, and the service life of the optical fiber is reduced.

Meanwhile, in areas with more insects, the optical cable is damaged by the insects after construction due to the fact that the protection of the optical fiber in the optical cable is weak.

The insects particularly like to lay eggs in the optical cable slot because the slot is convenient for the insects to stay and hide, the black outer sheath of the butterfly-shaped leading-in optical cable is taken as a withered trunk by the insects, the black outer sheath is repeatedly rubbed on the surface of the rough optical cable through the thorn in the middle of the oviduct at the position where the optical cable is slotted, the surface of the optical cable is abraded to form a certain small hole under the action of the friction, then 180-degree reciprocating type rotary friction is started, the hole is abraded and expanded through the serrated oviduct until the size and the depth of the hole are suitable for laying eggs, and the outer sheath of the optical cable is easily punctured and weak due to the fact that the optical fibers at the slot of the traditional butterfly.

After long-term production and practice, the traditional butterfly-shaped lead-in optical cable is not suitable for popularization and use in many practical application occasions, and lead-in optical cables meeting more structural requirements and performance requirements must be developed so as to improve the reliability and the applicability of user lead-in optical cables.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a strenghthened type introducing optical cable strengthens the protection to V type groove department, and butterfly shape optical cable V type groove protection is weak among the solution prior art, is easily by torn problem to also prevent that the insect from laying eggs at V type inslot and to the destruction of optical cable.

In order to solve the technical problem, the utility model provides a strenghthened type introducing optical cable, a serial communication port, including optical fiber unit, reinforcement, butterfly sheath, band layer, surrounding layer sheath, the optical fiber unit sets up in butterfly sheath center, the reinforcement sets up respectively in the both wings of butterfly sheath, be provided with V type groove respectively on the both sides surface of butterfly sheath, band layer and surrounding layer sheath are the cladding in the butterfly sheath outside in proper order, the surrounding layer sheath is in the surface that V type groove corresponds the position is provided with peels off the groove, in both sides all be provided with the tear rope in the V type groove.

In a preferred embodiment of the present invention, the stripping groove further comprises a groove depth of 0.4mm, and a width of 0.2 mm.

The utility model discloses a preferred embodiment, further include the optical fiber unit includes loose tube and the cladding is at the intraductal optic fibre of loose tube, the intussuseption of loose tube is filled with fine oleamen.

In a preferred embodiment of the present invention, the cover further comprises a suspension wire, the suspension wire is integrally formed with the outer cladding sheath, and a suspension wire steel wire is disposed in the suspension wire.

In a preferred embodiment of the present invention, the outer sheath and the suspension wire are made of low smoke halogen-free flame retardant material.

In a preferred embodiment of the present invention, the wrapping layer is a water-blocking tape longitudinally wrapped outside the butterfly-shaped sheath.

In a preferred embodiment of the present invention, the reinforcing member is symmetrically disposed with respect to the optical fiber unit.

In a preferred embodiment of the present invention, the reinforcement is a metal reinforcement or an FRP rod.

The utility model has the advantages that: the utility model discloses a strenghthened type drop cable has band layer and surrounding layer sheath in proper order at present butterfly-shaped drop cable outer cladding, exposes outer V type groove to current butterfly-shaped drop cable, solves among the prior art butterfly-shaped cable V type groove protection weak, is easily by torn problem to also prevent that the insect from laying eggs the destruction to the optical cable in V type groove, and be provided with the surface that corresponds the position with V type groove on the surrounding layer sheath and peel off the groove, in both sides all be provided with in the V type groove and tear the rope, peel off the position of groove V type groove fast convenient to confirm through setting up, and follow and peel off groove department and go into the sword more easily, mark out the back with the surrounding layer sheath and the band layer of optical cable, take out the rope that tears in the V type groove, use to tear the rope and peel off the outer surrounding layer sheath and the band layer.

Drawings

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

fig. 2 is the schematic structural diagram of the reinforced drop cable after the suspension wire is introduced.

The reference numbers in the figures illustrate: 1. an optical fiber; 2. loosening the sleeve; 3. a reinforcement; 4. a butterfly-shaped sheath; 5. a V-shaped groove; 6. tearing the rope; 7. a belting layer; 8. an outer cladding jacket; 9. a stripping groove; 10. hanging wires; 11. and (4) hanging wire steel wires.

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, an embodiment of the reinforced drop cable of the present invention includes an optical fiber unit, a reinforcing member 3, a butterfly sheath 4, a band layer 7, and an outer sheath layer sheath 8, wherein the optical fiber unit is disposed at the center of the butterfly sheath 4, the reinforcing member 3 is disposed in each of the wings of the butterfly sheath 4, V-shaped grooves 5 are respectively disposed on the two side surfaces of the butterfly sheath 4, the wings of the butterfly sheath 4 can be torn along the V-shaped grooves 5, the optical fiber unit is taken out for use, the band layer 7 and the outer sheath layer sheath 8 are sequentially covered on the outer side of the butterfly sheath 4, a stripping groove 9 is disposed on the outer surface of the outer sheath layer sheath 8 at the position corresponding to the V-shaped groove 5, the depth of the stripping groove 9 is 0.4mm in this embodiment, the width of the stripping groove 9 is 0.2mm, and a tool bit of a blade can only enter the stripping groove 9, set up and peel off groove 9 and can be convenient for constructor and find the position of V type groove 5 fast on the one hand, on the other hand can be convenient for use the blade and cut out surrounding layer sheath 8 and band layer 7, in both sides all be provided with in the V type groove 5 and tear rope 6, use the blade to cut out surrounding layer sheath 8 and band layer 7 of optical cable, take out the rope 6 that tears in the V type groove 5, use to tear rope 6 and peel off whole optical cable outer surrounding layer sheath 8 and band layer 7 along V type groove 5.

Specifically, the optical fiber unit includes loose tube 2 and cladding optic fibre 1 in loose tube 2, sets up loose tube 2 cladding optic fibre 1 can protect optic fibre 1 when tearing butterfly sheath 4 along V type groove 5, prevents to directly damage optic fibre 1 owing to the too big application of force when tearing, optic fibre 1 can adopt bulk optic fibre or ribbon optic fibre, loose tube 2 intussuseption is filled with fine oleamen, fine oleamen can play the effect of buffer protection to optic fibre 1 on the one hand, and on the other hand can play the effect that blocks water.

Specifically, the band layer 7 is a water blocking tape longitudinally wrapped outside the butterfly-shaped sheath 4, the water blocking tape is longitudinally wrapped outside the butterfly-shaped sheath 4, on one hand, the butterfly-shaped sheath 4 can be longitudinally protected against water, on the other hand, the water blocking tape is used for wrapping the V-shaped groove 5, and when the injection molding outer cladding sheath 8 is prevented, the outer cladding sheath material enters the V-shaped groove 5 to cause blockage in the V-shaped groove 5, so that the butterfly-shaped sheath 4 is not conveniently torn from the V-shaped groove 5.

Specifically, the reinforcing members 3 are symmetrically arranged with the optical fiber unit as a center, so that the distances between the reinforcing members 3 on both sides and the optical fiber unit are the same, the stresses on both sides are the same, the reinforcing members 3 are metal reinforcing members or FRP rods, the tensile strength of the metal reinforcing members is higher, the FRP rods are lighter in weight, and different reinforcing members 3 can be used according to actual conditions.

Refer to fig. 2 and show, for the convenience the utility model discloses a laying of strenghthened type introducing optical cable when outdoor wiring, in this embodiment, still include suspension wire 10, suspension wire 10 with 8 integrated into one piece of surrounding layer sheath, be provided with suspension wire steel wire 11 in the suspension wire 10, the suspension wire 10 of self-supporting sets up the built on stilts of making things convenient for the optical cable to lay, reduces built on stilts density, reduces optical cable and lays cost and intensity of labour, improves optical cable and lays efficiency.

Specifically, the outer cladding sheath 8 and the suspension wire 10 are both made of low-smoke halogen-free flame-retardant materials, and the low-smoke halogen-free flame-retardant sheath can resist ultraviolet rays, water and mildew, and resist environmental stress cracking; and no acid gas is released, the equipment in a machine room is not corroded, and the flame-retardant cable is suitable for indoor environments with high flame-retardant grade (such as wiring in a ceiling, open wiring and the like).

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a strenghthened type drop cable, its characterized in that, includes optical fiber unit, reinforcement, butterfly sheath, band layer, surrounding layer sheath, the optical fiber unit sets up in butterfly sheath center, the reinforcement sets up respectively in the both wings of butterfly sheath, be provided with V type groove respectively on the both sides surface of butterfly sheath, band layer and surrounding layer sheath are the cladding in the butterfly sheath outside in proper order, the surrounding layer sheath is in the surface that V type groove corresponds the position is provided with peels off the groove, in both sides all be provided with the tear rope in the V type groove.

2. The reinforced drop cable of claim 1, wherein the stripping groove has a groove depth of 0.4mm and a width of 0.2 mm.

3. The reinforced drop cable of claim 1, wherein the optical fiber unit comprises a loose tube and an optical fiber encased in the loose tube, the loose tube being filled with a fiber gel.

4. The enhanced drop cable of claim 1, further comprising a messenger wire integrally formed with the outer jacket, the messenger wire having a messenger wire disposed therein.

5. The reinforced drop cable of claim 1, wherein the outer jacket and the suspension wire are each made of a low smoke, zero halogen, flame retardant material.

6. The reinforced drop cable of claim 1, wherein the tape layer is a water blocking tape wrapped longitudinally outside the butterfly jacket.

7. The reinforced drop cable of claim 1, wherein the strength members are symmetrically disposed about the fiber unit.

8. The reinforced drop cable of claim 1, wherein the strength member is a metal strength member or an FRP rod.