CN115113352B - Optical ribbon cable - Google Patents

Abstract

The invention belongs to the field of cables, and particularly relates to a ribbon optical cable. It comprises the following steps: the optical fiber cable comprises a sheath, a torsion unit and an optical fiber cable arranged in the torsion unit; the torsion-resistant units are arranged in a plurality and uniformly distributed and arranged around the axis of the optical cable in the circumferential direction; the torsion resistant unit comprises an inner rib, an outer rib and a middle rib; the inner ribs of the torsion-resistant units are connected end to end in the circumferential direction and are abutted to form a ring; the inner end of the outer rib is connected with the inner rib, the outer end of the outer rib is arranged outwards along the radial direction of the optical cable, and each torsion-resistant unit is correspondingly provided with two outer ribs; the middle rib is arc-shaped, and two ends of the arc are fixedly connected to the inner sides of the two outer ribs of the same torsion-resistant unit; the outer rib, the inner rib and the middle rib form an accommodating space, and the accommodating space is used for arranging an optical fiber line. The invention improves the structure of the ribbon-shaped optical cable, so that the ribbon-shaped optical cable has good compression resistance and anti-twisting performance, and the damage to the inner optical fiber ribbon caused by external force pressing can be effectively avoided.

Description

Optical ribbon cable

Technical Field

The invention belongs to the field of cables, and particularly relates to a ribbon optical cable.

Background

The ribbon cable is a special structure of the cable.

The communication line inside the ribbon cable is different from the bundle-shaped optical fiber inside the conventional optical cable, and the optical fiber ribbon is used for signal transmission. Therefore, the cable has the advantages of multiple cores, easy branching and the like which are not possessed by the conventional optical cable, but also has the defect of poor torsion resistance.

The most common form of damage to a ribbon cable is internal ribbon tearing damage due to torsion, and thus improving the resistance to torsion of a ribbon cable is critical to improving its utility and effectiveness.

Disclosure of Invention

The invention provides a ribbon optical cable for solving the problems that the existing ribbon optical cable is weak in torsion resistance, and the fiber transmission performance is reduced due to the fact that a fiber ribbon is easily torn after torsion.

The invention aims at:

1. the anti-twisting performance of the ribbon optical cable is improved;

2. and simultaneously improves the compression resistance of the ribbon cable.

In order to achieve the above purpose, the present invention adopts the following technical scheme.

A ribbon cable comprising:

the optical fiber cable comprises a sheath, a torsion unit and an optical fiber cable arranged in the torsion unit;

the torsion-resistant units are arranged in a plurality and uniformly distributed and arranged around the axis of the optical cable in the circumferential direction;

the torsion resistant unit comprises an inner rib, an outer rib and a middle rib;

the inner ribs of the torsion-resistant units are connected end to end in the circumferential direction and are abutted to form a ring;

the inner end of the outer rib is connected with the inner rib, the outer end of the outer rib is arranged outwards along the radial direction of the optical cable, and each torsion-resistant unit is correspondingly provided with two outer ribs;

the middle rib is arc-shaped, and two ends of the arc are fixedly connected to the inner sides of the two outer ribs of the same torsion-resistant unit;

the outer rib, the inner rib and the middle rib form an accommodating space, and the accommodating space is used for arranging an optical fiber line.

As a preferred alternative to this,

the optical fiber wire comprises a wire body serving as a carrier part and an optical fiber ribbon embedded and fixed in the wire body;

the optical fiber ribbon is arranged along the axial direction of the optical cable.

As a preferred alternative to this,

the optical fiber wire is abutted against the surfaces of the outer rib and the middle rib.

As a preferred alternative to this,

the opening angle formed by opening two outer ribs on the same torsion-resistant unit is 1/3-1/2 of the arc angle of the inner rib.

As a preferred alternative to this,

the sheath is extended and embedded into the torsion-resistant unit and is attached to the outer surface of the middle rib to form a first table body.

As a preferred alternative to this,

a second platform body is formed by extending the adjacent outer ribs of the adjacent torsion units to the cable core part;

the extension depth of the second platform body is smaller than that of the first platform body.

As a preferred alternative to this,

and a cushion layer is arranged on the inner surface of the second platform body.

As a preferred alternative to this,

a linear reinforcing piece is correspondingly arranged in the sheath outside the middle rib of the torsion-resistant unit.

As a preferred alternative to this,

an elastic buffer piece is arranged between two adjacent torsion-resistant units.

As a preferred alternative to this,

the elastic buffer member is similar to W in radial cross section of the optical cable, and two tips of the W-shaped opening outwards and inwards are respectively abutted against the outer surfaces of the inner ribs of the two adjacent torsion units.

The beneficial effects of the invention are as follows:

the structure of the ribbon-shaped optical cable is improved, so that the ribbon-shaped optical cable has good compression resistance and anti-twisting performance, and the damage of an optical fiber ribbon in the ribbon-shaped optical cable caused by external force pressing can be effectively avoided.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a force diagram of an optical cable according to the present invention;

in the figure: 100 jackets, 101 first bodies, 102 second bodies, 103 reinforcements, 104 cushions, 200 torsion units, 201 inner ribs, 202 outer ribs, 203 middle ribs, 300 optical fiber wires, 301 wire bodies, 302 optical fiber ribbons, 400 hollow elastic tubes, 500 elastic buffers.

Detailed Description

The invention is described in further detail below with reference to specific examples and figures of the specification. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.

In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" means at least two, for example, two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art unless specifically stated otherwise; the methods used in the examples of the present invention are those known to those skilled in the art unless specifically stated otherwise.

Examples

A ribbon cable as shown in fig. 1, comprising in particular:

sheath 100, torsion unit 200, and optical fiber cable 300 disposed within torsion unit 200;

the optical fiber cable 300 comprises a cable body 301 serving as a carrier part and an optical fiber ribbon 302 embedded and fixed inside the cable body 301, wherein the optical fiber ribbon 302 is axially arranged along an optical cable;

the torsion-resistant units 200 are provided with a plurality of torsion-resistant units and are uniformly distributed and arranged around the axial center of the optical cable in the circumferential direction, the torsion-resistant units 200 comprise three parts, namely an inner rib 201, an outer rib 202 and a middle rib 203, the inner ribs 201 of the torsion-resistant units 200 are connected end to end in the circumferential direction to form a ring, the inner sides of the inner ribs 201 are connected with hollow elastic pipes 400 in an abutting mode, the inner ends of the outer ribs 202 are connected with the inner ribs 201, the outer ends of the outer ribs are arranged outwards in the radial direction of the optical cable, each torsion-resistant unit 200 is correspondingly provided with two outer ribs 202, the opening angle formed by opening the two outer ribs 202 is 1/3-1/2 of the arc angle of the inner ribs 201, and in the specific embodiment, the opening angle of the outer ribs 202 is 60 degrees, and the arc angle of the inner ribs 201 is 120 degrees;

the middle rib 203 is arc-shaped, two ends of the arc are fixedly connected to the inner sides of the two outer ribs 202 of the same torsion unit 200, the outer ribs 202, the inner ribs 201 and the middle rib 203 form an accommodating space, and the accommodating space is internally provided with an optical fiber 300;

the optical fiber wire 300 is abutted against the surfaces of the outer rib 202 and the middle rib 203;

the sheath 100 is extended and embedded into the torsion unit 200 and is attached to the outer surface of the middle rib 203 to form a first table body 101;

as shown in fig. 2, by the cooperation of the above structures, when the optical cable of the present invention is subjected to a torsion force, the first platform 101 will twist with the sheath 100 and drive the outer rib 202 located outside the middle rib 203 to be deformed, and the outer rib 202 will be deformed partially to drive the whole of the optical cable to be twisted, and the exact outer rib 202 is deformed to drive the middle rib 203 to be deformed to be matched with the middle rib 203, and then the accommodating space is deformed, and the deformation will cause the optical fiber 300 to generate a circumferential displacement opposite to the torsion force, so as to counteract the torsion deformation effect of the torsion force on the optical fiber 300, so that the absolute torsion angle and offset of the optical fiber 300 are reduced, the technical effect of torsion resistance of the ribbon optical cable is realized, and the damage problem of the optical fiber ribbon 302 caused by the torsion of the optical cable is avoided;

on the other hand, in the other hand,

in the invention, between the adjacent outer ribs 202 of two adjacent torsion units 200, the sheath 100 also extends towards the cable core part to form a second platform body 102, and the extending depth of the second platform body 102 is smaller than that of the first platform body 101;

by the cooperation of the second table 102 and the first table 101, the outer end portion of the outer rib 202 of the torsion unit 200 can be clamped, so that a more accurate and effective deformation effect of the torsion unit 200 in linkage can be generated.

Further, the method comprises the steps of,

the inner surface of the second platform 102 is provided with a cushion layer 104;

an elastic buffer member 500 is arranged between two adjacent torsion units 200, the elastic buffer member 500 is in a W-like shape on the radial section of the optical cable, the W-shaped opening of the elastic buffer member is outwards abutted against the cushion layer 104, and two inward tips are respectively abutted against the outer surfaces of the inner ribs 201 of the two adjacent torsion units 200;

by arranging the elastic buffer 500, the torsion-resistant unit 200 can further inhibit the torsion of the structure in the sheath 100 in the torsion deformation process, so that the torsion-resistant capacity threshold of the whole optical cable is improved, and the compression deformation of the elastic buffer 500 needs to be further overcome when the optical cable is twisted to drive the torsion-resistant unit 200 to be twisted, so that the optical fiber 300 in the optical cable and the optical fiber ribbon 302 embedded in the optical fiber 300 can be more effectively protected;

in addition, in the case of the optical fiber,

a linear strength member 103 is correspondingly arranged in the sheath 100 outside the middle rib 203 of each torsion-resistant unit 200, the strength member 103 is arranged to ensure that the whole optical cable has better axial shaping capability, and the strength member 103 is tightly arranged to ensure that the sheath 100 is more difficult to twist, so that the torsion resistance threshold of the optical cable is also improved to a certain extent.

Claims (1)

1. A fiber optic ribbon cable comprising, from outside to inside:

the optical fiber cable comprises a sheath, a torsion unit and an optical fiber cable arranged in the torsion unit;

the torsion-resistant units are arranged in a plurality and uniformly distributed and arranged around the axis of the optical cable in the circumferential direction;

the torsion resistant unit comprises an inner rib, an outer rib and a middle rib;

the inner ribs of the torsion-resistant units are connected end to end in the circumferential direction and are connected in a loop, and hollow elastic pipes are connected with the inner sides of the inner ribs in a propping way;

the inner end of the outer rib is connected with the inner rib, the outer end of the outer rib is arranged outwards along the radial direction of the optical cable, and each torsion-resistant unit is correspondingly provided with two outer ribs;

the middle rib is arc-shaped, and two ends of the arc are fixedly connected to the inner sides of the two outer ribs of the same torsion-resistant unit;

the outer ribs, the inner ribs and the middle ribs form accommodating spaces, and the accommodating spaces are used for arranging optical fiber wires;

the optical fiber wire comprises a wire body serving as a carrier part and an optical fiber ribbon embedded and fixed in the wire body;

the optical fiber ribbon is axially arranged along the optical cable;

the optical fiber wire is abutted against the surfaces of the outer rib and the middle rib;

the opening angle formed by opening two outer ribs on the same torsion-resistant unit is 1/3-1/2 of the arc angle of the inner rib;

the sheath is extended and embedded into the torsion-resistant unit and is attached to the outer surface of the middle rib to form a first platform body;

a second platform body is formed by extending the adjacent outer ribs of the adjacent torsion units to the cable core part;

the extension depth of the second platform body is smaller than that of the first platform body;

a cushion layer is arranged on the inner surface of the second platform body;

a linear reinforcing piece is correspondingly arranged in the sheath outside the middle rib of the torsion-resistant unit;

an elastic buffer member is arranged between two adjacent torsion-resistant units;

the elastic buffer member is similar to W in radial cross section of the optical cable, and two tips of the W-shaped opening outwards and inwards are respectively abutted against the outer surfaces of the inner ribs of the two adjacent torsion units.

Images