CN210090755U

CN210090755U - Anti-bending tightly-wrapped optical cable

Info

Publication number: CN210090755U
Application number: CN201920947542.8U
Authority: CN
Inventors: 肖斌
Original assignee: Suzhou Teruitong Communications Co Ltd
Current assignee: Suzhou Teruitong Communications Co Ltd
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-02-18
Anticipated expiration: 2029-06-22

Abstract

The utility model discloses an anti tight package optical cable of buckling, it relates to the optic fibre field, aims at solving traditional optical cable and can buckle, leads to the cracked problem of inside optic fibre, and its technical scheme main points are anti tight package optical cable of buckling, including tight package fibre core, tight package fibre core lateral wall parcel has tight package layer, the outer parcel of tight package layer has the enhancement layer, the enhancement layer overcoat is equipped with outer jacket, outer jacket lateral wall cover is equipped with prevents the cover that bends, the utility model discloses the effect that improves optical cable bending resistance has been reached.

Description

Anti-bending tightly-wrapped optical cable

Technical Field

The utility model belongs to the technical field of the technique of optical cable and specifically relates to an anti optical cable of tightly wrapping of buckling is related to.

Background

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic sheath, and has no metal such as gold, silver, copper and aluminum, and generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission.

The prior Chinese patent with the publication number of CN201477251U discloses a tightly-packed optical fiber cable, which comprises a fiber core positioned in the center of an optical fiber, wherein a cladding is arranged on the outer side of the fiber core, a resin coating is coated outside the cladding, the coating is tightly packed with a protective layer, the resin coating is a UV-cured acrylic resin coating, and the tightly-packed protective layer is polyvinyl fluoride.

The above prior art solutions have the following drawbacks: in the use process of the optical cable, the fiber core is prevented from being bent only by the material strength of the inner and outer different wrapping layers of the optical cable, but when the optical cable is used for a long distance, the bending resistance of the wrapping layers in the optical cable is limited, and the possibility that the fiber core in the optical cable is broken can still exist, so that the problem needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti tight package optical cable of buckling, it has the possibility that prevents in the optical cable fibre core by this absolutely.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an anti optical cable that wraps tightly of buckling, includes and wraps the fibre core tightly, it has the tight layer to wrap up tightly the fibre core lateral wall, the outer parcel of tight layer has the enhancement layer, the enhancement layer overcoat is equipped with outer jacket, outer jacket lateral wall cover is equipped with prevents the curved cover.

Through adopting above-mentioned technical scheme, generally lay in the open air when the optical cable uses, generally be long distance and lay the optical cable, but if the optical cable scrapes the hindrance, it is crooked to lead to the optical cable to take place to buckle and finally lead to the optic fibre fracture in the optical cable, the rigid friction of follow-up enhancement layer can be completely cut off to the layer of packing tightly of present optic fibre outsourcing, the enhancement layer can improve the anti ability of buckling of tentatively improving the optical cable, the overcoat layer can play the effect of buffering, last layer of preventing bending can prevent that the optical cable from taking place to pass through the bending at the in-process of laying, thereby play and prevent that the optical cable from taking place.

Further, the outer side wall of the bending-proof sleeve is provided with a plurality of bending grooves along the length direction of the bending-proof sleeve.

Through adopting above-mentioned technical scheme, because the optical cable is at the in-process of laying, certain bending will take place for the optical cable, prevent that curved cover itself is more hard can influence the flexibility of optical cable, and the back appears in crooked groove, when the optical cable is crooked, prevent that the crooked groove interval on the curved cover can diminish, from the crookedness that improves the optical cable, operating personnel can design the width of seting up of crooked groove according to the crooked limit of optical cable to play the effect that improves the crooked flexibility ratio of optical cable.

Furthermore, the bending groove comprises a plurality of extrusion grooves arranged along the circumferential direction of the bending-prevention sleeve, and two extrusion grooves symmetrically arranged along the radial direction on the same section of the length direction of the bending-prevention sleeve are bending groups.

Through adopting above-mentioned technical scheme, antiskid cover cross-section radial symmetry sets up the extrusion groove, and the quantity in extrusion groove is more, and the position optical cable homoenergetic that the extrusion groove distributes takes place to be crooked, and the crooked direction of optical cable can become more this moment to play the effect that improves the crooked scope of optical cable.

Furthermore, the bending groups on the circumferential direction of the bending-proof sleeve are arranged in a staggered mode along the length direction of the bending-proof sleeve.

Through adopting above-mentioned technical scheme, the crooked group that staggers the setting can not take place destruction on a large scale in the circumference of preventing the curved cover to play and prevent the destroyed effect of the holistic mechanical properties in the curved cover outside, and then play the effect that further protection is prevented curved cover and is improved and is prevented curved cover life.

Further, the extrusion groove is obliquely arranged along the length direction of the bending-proof sleeve.

Through adopting above-mentioned technical scheme, the extrusion groove that the slope set up can improve the extrusion groove and prevent the ascending span of curved cover length direction to the reduction is prevented that the extrusion groove sets up quantity on the curved cover, thereby plays and prevents the destroyed effect of curved cover mechanical properties, and the extrusion groove of slope compares the truncation extrusion groove, and when preventing curved cover surface and having axial tension, the extrusion groove of slope is difficult to be destroyed, and then plays the effect that further protection prevented curved cover.

Furthermore, a bending strip is arranged in the extrusion groove, and two ends of the bending strip are respectively fixed on two sides of the extrusion groove.

Through adopting above-mentioned technical scheme, crooked strip is fixed in extrusion groove width direction's both sides, and extrusion groove length direction's both ends take place easily to tear, and extrusion groove both sides are torn the back, prevent that curved cover is just also destroyed, and the both ends of crooked strip are connected respectively in the both sides of extrusion inslot lateral wall, and the both sides in the extrusion inslot can some more reinforcing points this moment to play the effect in protection extrusion groove, and then play the effect that further protection was prevented curved cover.

Furthermore, a plurality of bending strips are uniformly distributed along the length direction of the bending groove.

Through adopting above-mentioned technical scheme, a plurality of curved strips can further improve extrusion inslot pulling force protection point to play the effect that further improves extrusion groove tensile strength, and then play the effect that further protection was prevented curved cover.

Furthermore, the bending-proof sleeve is equally divided into a plurality of sections along the length direction.

Through adopting above-mentioned technical scheme, prevent that curved cover cuts apart into a plurality of sections, the curved cover is prevented to the multistage that on the one hand is short prevents that curved cover is more stable than long whole section prevents curved cover to play and prevent that curved cover from being broken by the effect of breaking, on the other hand prevents that a position of cover damages, and the biggest chain destruction is destroyed with regard to the curved cover of preventing of a whole section and is destroyed, thereby reduces and prevents that curved cover from taking place the risk that the big section damaged.

To sum up, the utility model discloses a beneficial technological effect does:

1. the reinforcing layer and the anti-bending layer are adopted, so that the effect of preventing the optical cable from being bent is achieved;

2. the bending groove and the extrusion groove are adopted, so that the effect of improving the bending flexibility of the optical cable is achieved;

3. the bending strip is adopted, so that the effect of protecting the bending-proof sleeve is achieved.

Drawings

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

FIG. 2 is a schematic view of a partial structure of the fiber core tightly wrapped in the fiber core of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure, 1, tightly wrapping a fiber core; 2. a tight wrapping layer; 3. a reinforcing layer; 4. an overcoat layer; 5. a bending prevention sleeve; 6. a curved groove; 7. extruding a groove; 71. bending the strip; 72. and (4) bending the group.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses an anti-bending tightly-wrapped optical cable, including tightly-wrapped fiber core 1, wrap up one deck tight covering layer 2 outside tight-wrapped fiber core 1 first, tight covering layer 2 is formed by the crowded package of the fire-retardant tight covering material of halogen-free nanometer level, wrap up one deck enhancement layer 3 side outside tight covering layer 2, enhancement layer 3 is the metal woven mesh layer, the metal woven mesh can tentatively improve the anti-bending ability of tightly-wrapped fiber core 1, enhancement layer 3 can also increase the tensile strength of tightly-wrapped fiber core 1, the outer jacket layer 4 of rubber material is established to the outside cover of enhancement layer 3, at last, the outer jacket of jacket layer 4 is established and is prevented the curved cover 5, prevent curved cover 5 for the hard plastic of harder difficult buckling makes, when the optical cable is laid in long distance, probably because subaerial obstacle leads to the optical cable to take place the transition bending, lead to tightly-wrapped fiber core 1 to be broken, and prevent, therefore, the effect of preventing the tightly-wrapped fiber core 1 from being bent is achieved, and the effect of preventing the optical cable from being bent during long-distance laying is achieved.

Referring to fig. 2 and 3, the outer side wall of the bending-prevention sleeve 5 is provided with a bending groove 6, the optical cable needs to be bent to a certain extent in the laying process, the bending-prevention sleeve 5 is over hard, so that the laying flexibility of the optical cable is reduced, and after the bending groove 6 appears, when the optical cable needs to be bent, the relative width of the bending groove 6 can be narrowed, so that the bending degree of the optical cable is improved, and further the bending flexibility of the optical cable is improved, the bending groove 6 comprises extrusion grooves 7 axially arranged along the bending-prevention sleeve 5, the outer side wall of the bending-prevention sleeve 5 in the utility model is provided with four extrusion grooves 7, every two opposite extrusion grooves 7 form bending groups 72, two extrusion grooves 7 in each bending group 72 are radially arranged along the section of the bending-prevention sleeve 5, the diameters corresponding to the two bending groups 72 are mutually perpendicular, and the two bending groups 72 are axially staggered and arranged along the; the bending-prevention sleeve 5 is provided with a plurality of extrusion grooves 7 along the circumferential direction, so that the bending direction of the optical cable on one section is increased, and the effect of further improving the laying flexibility of the optical cable is achieved; the bending group 72 arranged in a staggered manner can keep the mechanical property of the bending-prevention sleeve 5, so that the mechanical property of the bending-prevention sleeve 5 is damaged too much, and the service life of the bending-prevention sleeve 5 is prolonged.

Referring to fig. 2 and 3, a bending strip 71 is arranged in the extrusion groove 7, two ends of the bending strip 71 are fixed on two sides in the extrusion groove 7, the number of the bending strips 71 is three, the bending strips 71 are uniformly distributed along the length direction of the extrusion groove 7, the bending strips 71 are made of rubber materials, when an optical cable is laid, tension can exist on the surface of the optical cable, the extrusion groove 7 can be stretched, the bending strips 71 can improve the tensile capacity of the extrusion groove 7, so that the effect of preventing the extrusion groove 7 from being torn is achieved, the extrusion groove 7 is obliquely arranged, the inclined extrusion groove 7 has a large span along the length direction of the bending-proof sleeve 5, the number of the extrusion grooves 7 on the bending-proof sleeve 5 can be reduced, the effect of protecting the bending-proof sleeve 5 is achieved, the bending-proof sleeve 5 is divided into a plurality of sections along the length direction, and the effect of preventing the bending-proof.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an anti tight package optical cable of buckling, includes tight package fibre core (1), its characterized in that: tightly wrap up fibre core (1) lateral wall parcel has tight covering (2), the outer parcel of tight covering (2) has enhancement layer (3), enhancement layer (3) overcoat is equipped with overcoat layer (4), overcoat layer (4) lateral wall cover is equipped with prevents curved cover (5).

2. The bend-resistant tight-buffered optical cable of claim 1, wherein: the outer side wall of the anti-bending sleeve (5) is provided with a plurality of bending grooves (6), and the bending grooves (6) are uniformly distributed along the length direction of the anti-bending sleeve (5).

3. The bend-resistant tight-buffered optical cable of claim 2, wherein: the bending groove (6) comprises a plurality of extrusion grooves (7) which are circumferentially arranged along the bending-prevention sleeve (5), and two extrusion grooves (7) which are symmetrically arranged along the radial direction on the same section of the length direction of the bending-prevention sleeve (5) are bending groups (72).

4. The bend-resistant tight-buffered optical cable of claim 3, wherein: the bending groups (72) on the circumferential direction of the bending-proof sleeve (5) are arranged in a staggered mode along the length direction of the bending-proof sleeve (5).

5. The bend-resistant tight-buffered optical cable of claim 4, wherein: the extrusion groove (7) is obliquely arranged along the length direction of the anti-bending sleeve (5).

6. The bend-resistant tight-buffered optical cable of claim 5, wherein: a bending strip (71) is arranged in the extrusion groove (7), and two ends of the bending strip (71) are respectively fixed on two sides of the extrusion groove (7).

7. The bend-resistant tight-buffered optical cable of claim 6, wherein: the bending strips (71) are uniformly distributed along the length direction of the bending groove (6).

8. The bend-resistant tight-buffered optical cable of claim 1, wherein: the bending-proof sleeve (5) is divided into a plurality of sections along the length direction.