CN209961961U

CN209961961U - Strong impact-resistant ribbon optical cable

Info

Publication number: CN209961961U
Application number: CN201920153787.3U
Authority: CN
Inventors: 李想; 杨陈浩; 莫思铭; 张国栋; 周莉
Original assignee: Jiangsu Etern Co Ltd
Current assignee: Jiangsu Etern Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-01-17
Anticipated expiration: 2029-01-29

Abstract

The application relates to a strong impact-resistant ribbon optical cable which sequentially comprises an optical fiber core (1), an elastic support (10), a loose tube (2), a water-blocking tape layer (4), a steel-plastic composite tape (5) and an outer sheath (6) from inside to outside, wherein the optical fiber core (1), the elastic support (10), the loose tube, the water-blocking tape layer (4), the steel-plastic composite tape and the outer sheath are; set up elastic support (10) between optical fiber core (1) and loose sleeve pipe (2), the space between optical fiber core (1) and loose sleeve pipe (2) is filled in elastic support (10) again, damages optical fiber core (1) for the introduction of the higher elastic support (10) of prevention hardness again simultaneously, has a plurality of interior concave surfaces at the lateral wall of elastic support (10), is equipped with between optical fiber ribbon (11) and the loose sleeve pipe (2) and has elastic buffer body (9), buffer body (9) are located between the interior concave surface of elastic support (10) and the loose sleeve pipe (2). Through the mode, the position of the optical fiber core (1) is fixed, and the whole optical fiber ribbon cable has good high impact resistance.

Description

Strong impact-resistant ribbon optical cable

Technical Field

The utility model relates to a strong impact-resistant ribbon optical cable belongs to optical cable technical field.

Background

The central tube type ribbon optical cable comprises an optical fiber core and a loose tube, wherein the optical fiber core is located at the center, the loose tube is wrapped outside the optical fiber core, fiber paste is filled between the loose tube and the optical fiber core, a water blocking tape layer is wrapped outside the loose tube, a steel-plastic composite tape is wrapped outside the water blocking tape layer, an outer sheath is wrapped outside the steel-plastic composite tape, the optical fiber core is formed by overlapping a plurality of optical fiber ribbons, each optical fiber ribbon is formed by combining the same number of optical fibers in parallel, and the optical fiber core can be wrapped in the loose tube after.

For example, chinese patent document 201307172Y discloses a central tube type ribbon optical cable with polygonal arrangement, which includes an optical fiber ribbon group located at the center and a loose tube covering the optical fiber ribbon group, wherein the optical fiber ribbon group is formed by overlapping a plurality of optical fiber ribbons, each optical fiber ribbon is formed by combining a plurality of optical fibers in parallel, the number of optical fibers of each optical fiber ribbon decreases gradually from inside to outside, the optical fiber ribbons located at the inner layer and having the largest number of optical fibers have at least two layers, the optical fiber ribbons located at the outer layer and having the smallest number of optical fibers have at least two optical fibers, and the cross section of the optical fiber core formed by overlapping the optical fiber ribbons is polygonal. However, since the entire optical fiber core is located at a relatively large distance from the loose tube, relative displacement is likely to occur, resulting in the optical fiber core not being centered. When the optical fiber core is eccentric, the optical fiber core is damaged when the optical cable is bent due to the fact that the optical fiber core is too close to the loose tube.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: in order to solve the technical problem that the ribbon optical cable in the prior art is not impact-resistant, a strong impact-resistant ribbon optical cable is provided.

The technical scheme of the utility model is that:

a strong impact-resistant optical fiber ribbon cable sequentially comprises an optical fiber core, an elastic bracket, a loose tube, a water-blocking tape layer, a steel-plastic composite tape and an outer sheath from inside to outside, wherein the optical fiber core, the elastic bracket, the loose tube, the water-blocking tape layer, the steel-plastic composite tape and the outer sheath are positioned in the center;

fiber paste is filled among the optical fiber core, the elastic bracket and the loose tube;

the optical fiber core is formed by combining a plurality of rows of optical fiber ribbons in parallel, and the number of the optical fiber ribbons in each row is gradually reduced from inside to outside;

the outer side wall of the elastic support is provided with a plurality of concave surfaces, and a through hole for accommodating the optical fiber core is formed in the center of the elastic support;

an elastic buffer body is further arranged between the optical fiber ribbon and the loose tube, and the buffer body is located between the inner concave surface of the elastic support and the loose tube.

Preferably, the present invention provides a high impact-resistant ribbon cable, wherein the cross section of the loose tube is circular or elliptical

Preferably, the utility model discloses a strong shock-resistant ribbon optical cable, it has the tear rope to bury underground between band layer and the steel-plastic composite strip to block water.

Preferably, the utility model discloses a strong shock-resistant ribbon cable, the material of the buffering body is silicon rubber.

Preferably, the utility model discloses a strong shock-resistant ribbon cable, the elastic support has 3-4 interior concave surfaces, the buffer body is also 3-4.

Preferably, the utility model discloses a strong impact-resistant ribbon cable, the reinforcing wire is 2-4, and 2-4 reinforcing wires evenly distributed.

The utility model has the advantages that: the utility model discloses a strong impact-resistant ribbon optical cable sets up the elastic support between optical fiber core and the pine sleeve pipe, and the space between optical fiber core and the pine sleeve pipe is filled to the elastic support again, damages the optical fiber core for the introduction of the higher elastic support of prevention hardness simultaneously again, has a plurality of interior concave surfaces at the lateral wall of elastic support, is equipped with between optical fiber ribbon and the pine sleeve pipe and has elastic buffering body, the buffering body position is in between elastic support's interior concave surface and the pine sleeve pipe. Through the mode, the position of the optical fiber core is fixed, and the whole ribbon optical cable has good high impact resistance.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic view of a high impact strength optical ribbon cable according to an embodiment of the present application.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example (b):

a strong impact-resistant optical fiber ribbon cable, as shown in figure 1, comprises an optical fiber core 1, an elastic support 10, a loose tube 2, a water-blocking tape layer 4, a steel-plastic composite tape 5 and an outer sheath 6 which are positioned in the center in sequence from inside to outside; fiber paste 3 is filled among the optical fiber core 1, the elastic bracket 10 and the loose tube 2; a plurality of reinforcing wires 7 are embedded in the outer sheath 6, the reinforcing wires 7 are uniformly distributed in the outer sheath 6, the optical fiber core 1 is formed by combining a plurality of rows of optical fiber ribbons 11 in parallel, and the number of the optical fiber ribbons 11 in each row is gradually reduced from inside to outside; the outer side wall of the elastic support 10 is provided with a plurality of concave surfaces, and a through hole for accommodating the optical fiber core 1 is formed in the center of the elastic support 10; an elastic buffer body 9 is further arranged between the optical fiber core 1 and the loose tube 2, and the buffer body 9 is located between the inner concave surface of the elastic support 10 and the loose tube 2.

When the optical cable is extruded by external force, the buffer body 9 absorbs pressure and generates deformation, and the optical fiber core 1 does not generate deformation. Theoretically, the optical fiber core 1 has the smallest information attenuation when the cross section is circular, and the best performance is used, but since the optical fiber ribbons 11 are stacked into the optical fiber core 1, it is difficult to form a circular cross section, and thus a polygonal cross section closest to a circular shape is the best. The buffer body 9 is used for buffering external force extrusion, prevents that external impact force from influencing the optical fiber core 1, makes it can not produce the deformation again after forming the polygonal cross-section that is closest to circular, and further, can also prevent that the optical fiber core 1 from receiving the destruction.

In the high impact resistance ribbon optical cable of the embodiment, an elastic support 10 is arranged between the optical fiber core 1 and the loose tube 2. The elastic support 10 fills the gap between the optical fiber core 1 and the loose tube 2, and has a plurality of concave surfaces on the outer side wall of the elastic support 10 in order to prevent the optical fiber core 1 from being damaged by the introduction of the elastic support 10 with higher hardness. An elastic buffer body 9 is arranged between the optical fiber ribbon 11 and the loose tube 2, and the buffer body 9 is positioned between the inner concave surface of the elastic support 10 and the loose tube 2. Through the mode, the position of the optical fiber core 1 is fixed, and the whole ribbon optical cable has good high impact resistance.

Preferably, the cross section of the loose tube 2 is circular or elliptical, which has a good deformation capacity uniformly.

Preferably, a tearing rope 8 is embedded between the water-blocking tape layer 4 and the steel-plastic composite tape 5.

Preferably, the material of the buffer body 9 is silicon rubber. The silicon rubber has good elasticity and restoring force and is used for buffering the impact of external stress on the optical cable, and the silicon rubber also has good corrosion resistance and is more suitable for buffering and protecting the cable compared with common rubber materials.

Preferably, the elastic support 10 has 3-4 inner concave surfaces, and the number of the buffer bodies 9 is also 3-4.

Preferably, a plurality of reinforcing wires 7 are embedded in the outer sheath 6, and the overall strength of the optical cable can be enhanced through the reinforcing wires 7. The reinforcing wires 7 are 2-4, and the 2-4 reinforcing wires 7 are uniformly distributed. For example, 2 in fig. 1, or 3, 4, etc.

The utility model discloses a strong impact-resistant ribbon optical cable sets up elastic support between optical fiber core and the pine sleeve pipe, and elastic support packs the space between optical fiber core and the pine sleeve pipe again, damages the optical fiber core for the introduction of the higher elastic support of preventing hardness simultaneously again, has a plurality of interior concave surfaces at elastic support's lateral wall, is equipped with between optical fiber ribbon and the pine sleeve pipe and has elastic buffer, and the buffer position is in between elastic support's interior concave surface and the pine sleeve pipe. By the mode, the position of the optical fiber core is fixed, and the whole ribbon optical cable has good high impact resistance

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A strong impact-resistant ribbon optical cable is characterized by comprising an optical fiber core (1), an elastic support (10), a loose tube (2), a water-blocking tape layer (4), a steel-plastic composite tape (5) and an outer sheath (6) which are positioned in the center from inside to outside in sequence;

fiber paste (3) is filled among the optical fiber core (1), the elastic support (10) and the loose tube (2);

a plurality of reinforcing wires (7) are embedded in the outer sheath (6), the reinforcing wires (7) are uniformly distributed in the outer sheath (6), the optical fiber core (1) is formed by combining a plurality of rows of optical fiber ribbons (11) in parallel, and the number of the optical fiber ribbons (11) in each row is gradually reduced from inside to outside;

the outer side wall of the elastic support (10) is provided with a plurality of concave surfaces, and a through hole for accommodating the optical fiber core (1) is formed in the center of the elastic support (10);

the optical fiber ribbon (11) and the loose tube (2) are also provided with an elastic buffer body (9), and the buffer body (9) is positioned between the inner concave surface of the elastic support (10) and the loose tube (2).

2. A high impact optical ribbon according to claim 1, wherein the cross-section of the loose tube (2) is circular or elliptical.

3. A high impact strength optical ribbon cable according to claim 1, wherein a tear string (8) is embedded between the water-blocking tape layer (4) and the steel-plastic composite tape (5).

4. A high impact optical ribbon cable according to claim 1, wherein the buffer body (9) is made of silicone rubber.

5. A high impact optical ribbon cable according to claim 1, wherein said elastic support (10) has 3-4 inner concave surfaces and said buffer body (9) has 3-4.

6. A high impact optical ribbon cable according to claim 1, wherein said strength filaments (7) are 2-4, and 2-4 of said strength filaments (7) are uniformly distributed.