CN214203256U - Data cable for communication - Google Patents

Abstract

The utility model provides a data cable for communication, the wire pair of the data cable for communication includes two wires that are twisted, the first insulating layer surrounds the wires, the first shielding layer longitudinally coats the wire pair, the second shielding layer, the sheath surround the first shielding layer in proper order; the first shielding layer one side of parcel line pair is contradicted each other and is formed the space, and the opposite side supports and leans on the second shielding layer, and the filling rope fills the space, and the overlap joint of first shielding layer is relative with the filling rope. The utility model discloses a mode of first shielding layer parcel line pair and the first shielding layer of second shielding layer parcel has reduced near-end crosstalk attenuation between the line pair, has reduced electromagnetic interference and external electromagnetic interference between the transmission line to fill the space and improve cable construction's stability and reduced signal leakage with the mode that the overlap joint is relative with the filling rope through the filling rope, improved the interference killing feature and the secret performance of product, alleviateed the time delay problem of cable.

Description

Data cable for communication

Technical Field

The utility model relates to a communication cable field especially relates to a data cable for communication.

Background

With the rapid development of network technology, people have higher and higher requirements on the performance of the integrated wiring system. From traditional audio copper core twisted-pair local area network cable to today's up to gigabit ratio local area network technology, with increasing network speed, it means that the higher the operating frequency, the easier it is to generate electromagnetic radiation and capacitive coupling. Meanwhile, new electromagnetic interference sources are continuously generated in the surrounding environment, the radiation generated when the network working frequency is higher is more serious, and the balance characteristic of the UTP non-shielding data cable is not enough to offset the electromagnetic radiation of the line and the external electromagnetic interference (the electromagnetic compatibility performance can only be met when 30-40 MHz data is transmitted).

In addition, in the prior art, in order to improve the data transmission amount, a plurality of wire pairs are often arranged in the cable, and the wire pairs are often processed in a mode that a framework is fixed or not fixed, however, the flexibility of the cable is reduced in a mode that the framework is arranged, the framework is easy to damage, the wire pairs in the cable without the framework are easy to move and cannot be kept in a structure with minimum interference, and the influence on data transmission is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's is not enough, the utility model provides a data cable for communication, the mode through first shielding layer parcel pair and the first shielding layer of second shielding layer parcel has reduced near-end crosstalk attenuation between the pair, electromagnetic interference and external electromagnetic interference between the transmission line have been reduced, and fill the rope through the packing space and with overlap joint department and the relative mode of packing rope improved cable construction's stability and reduced signal leakage, the interference killing feature and the secret performance of product have been improved, the time delay problem of cable has been alleviateed.

In order to solve the above problem, the utility model discloses a technical scheme do: a data cable for communications, the data cable for communications comprising: the cable comprises four wire pairs, a first insulating layer, a first shielding layer, a filling rope, a second shielding layer and a sheath; the wire pair comprises two wires which are twisted, a first insulating layer surrounds the wires, the first shielding layer longitudinally covers the wire pair, and the second shielding layer and the sheath sequentially surround the first shielding layer; the parcel first shielding layer one side of line pair is contradicted each other and is formed the space, and the opposite side supports and leans on the second shielding layer, the filling rope fills the space, just the overlap joint department of first shielding layer with the filling rope is relative.

Further, the conducting wire is a copper wire.

Further, the first insulating layer comprises an inner insulating layer, a foaming insulating layer and an outer insulating layer, and the inner insulating layer, the foaming insulating layer and the outer insulating layer wrap the wire in sequence.

Furthermore, a color strip is arranged outside the first insulating layer, and the first insulating layer and the color strip are formed in one step through a four-layer co-extrusion technology.

Further, the twist direction of the wire is opposite to the twist direction of the wire pair, and the wire pair is formed by twisting and untwisting the wire.

Further, the second shielding layer is a copper wire or a tinned copper wire braid.

Further, the first shielding layer is an aluminum foil, the width of the first shielding layer is 15mm, and the thickness of the first shielding layer is 0.07 mm.

Further, the thickness of the second shielding layer is 0.16 mm.

Further, the sheath is a low-smoke halogen-free flame-retardant polyolefin sheath.

Compared with the prior art, the beneficial effects of the utility model reside in that: the mode of wrapping up the wire pair through first shielding layer and second shielding layer parcel first shielding layer has reduced near-end crosstalk attenuation between the wire pair, has reduced electromagnetic interference and external electromagnetic interference between the transmission line to fill the space and with the lap-joint with the mode relative of filling the rope improved the stability of cable structure and reduced signal leakage, improved the interference killing feature and the secret keeping quality of product, alleviateed the time delay problem of cable.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of a communication data cable according to the present invention;

fig. 2 is a cross-sectional view of an embodiment of the conductor and the first insulating layer of the data cable for communication according to the present invention.

In the figure: 1. a wire; 2. a first insulating layer; 3. a first shielding layer; 4. filling a rope; 5. a second shielding layer; 6. a sheath; 21. an inner insulating layer; 22. foaming the insulating layer; 23. an outer insulating layer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1-2, fig. 1 is a cross-sectional view of an embodiment of a communication data cable according to the present invention; fig. 2 is a cross-sectional view of an embodiment of a conductive wire and a first insulating layer of a data cable for communication according to the present invention, wherein the cross-sectional view of fig. 1 is a transverse cross-sectional view of the data cable for communication, and the cross-sectional view of fig. 2 is a transverse cross-sectional view of the conductive wire and the first insulating layer, and the data cable for communication according to the present invention is explained in detail with reference to fig. 1 to 2.

In the present embodiment, the data cable for communication includes: four wire pairs, a first insulating layer 2, a first shielding layer 3, a filling rope 4, a second shielding layer 5 and a sheath 6; the wire pair comprises two wires 1 which are twisted, a first insulating layer 2 surrounds the wires 1, a first shielding layer 3 longitudinally covers the wire pair, and a second shielding layer 5 and a sheath 6 sequentially surround the first shielding layer 3; wrap up first shielding layer 3 one side of line pair and be close to each other and contradict and form the space, the opposite side supports and leans on second shielding layer 5, and filling rope 4 fills the space, and first shielding layer 3's overlap joint is relative with filling rope 4. The product structure is made more stable by the filling strings 4. Meanwhile, the lap joint of the first shielding layer 3 is in the direction of the filling rope 4, and the lap joint of the cable is not easy to generate gaps when the cable is bent due to the filling rope 4, so that signal leakage is less.

In this embodiment, the material constituting the wire 1 is a copper wire, wherein the copper wire may be a single copper wire or formed by twisting a plurality of copper wires, and in other embodiments, the material constituting the wire 1 may be aluminum, aluminum alloy, or other materials capable of transmitting data.

In a preferred embodiment, the wire 1 is a copper wire and the diameter of the wire 1 is 0.6 mm.

In the present embodiment, the first insulation layer 2 includes an inner insulation layer 21, a foamed insulation layer 22, and an outer insulation layer 23, and the inner insulation layer 21, the foamed insulation layer 22, and the outer insulation layer 23 sequentially wrap the wire 1. The insulation dielectric constant of the data cable for communication is reduced by the first insulation layer 2, wherein the inner insulation layer 21 and the outer insulation layer 23 have a solid structure, the foamed insulation layer 22 has an insulation structure formed by physically foamed polyethylene, and the insulation structure is formed by injecting nitrogen at high pressure.

In other embodiments, the foamed insulation layer 22 may be made of one or more materials such as foamed polyurethane, foamed polyvinyl chloride, foamed polystyrene, foamed phenolic resin, etc.

In a preferred embodiment, the foamed insulating layer 22 has a diameter of 1.55 mm.

In this embodiment, the first insulating layer 2 is further provided with a color bar, and the first insulating layer 2 and the color bar are formed at one time by a four-layer co-extrusion technology.

In a specific embodiment, the inner insulating layer 21, the foamed insulating layer 22, the outer insulating layer 23, and the color bars are extruded simultaneously by four extruders and formed in one step on one head.

In this embodiment, the first shielding layer 3 is an aluminum foil, the aluminum foil longitudinally wraps the wire pair formed by twisting the conducting wires 1, the lap joint of the aluminum foil is opposite to the filling rope 4, and the lap joint is kept from being loosened by the squeezing action between the wire pair and the filling rope 4, so that a gap is prevented from occurring in the first shielding layer 3, and signal leakage is reduced.

In this embodiment, the filling rope 4 may be a polypropylene mesh filling rope, a low smoke zero halogen filling rope, a glass fiber filling rope, or other filling ropes 4 with a flame retardant effect.

In a preferred embodiment, the aluminum foil forming the first shielding layer 3 is a strip structure having a width of 15mm and a thickness of 0.07 mm.

In this embodiment, the product structure is made more stable, the twisting direction of the wire 1 is opposite to the twisting direction of the wire pair, and the wire pair is formed by twisting and untwisting the wire 1.

In a preferred embodiment, the two wires 1 of the wire pair are twisted in the left direction, the wires are twisted in the right direction, the twisting directions of the two wires are opposite, internal stress generated in the twisting process is eliminated, and the two wires 1 are untwisted according to the proportion of 40-50% when the wires 1 are twisted, so that the pair twisting pitch is greatly reduced, the pitch range is 14-18mm, and the product structure is more stable.

In this embodiment, the second shielding layer 5 is a braid, wherein the braid may be a copper wire or a tinned copper wire.

In a specific embodiment, the thickness of the second shield layer 5 is 0.16 mm.

In this embodiment, the jacket 6 is a low smoke, halogen-free, flame retardant polyolefin jacket 6. In other embodiments, the jacket 6 may also be constructed of polyvinyl chloride, high density polyethylene, rubber, silicone rubber, polyurethane, and other insulating materials.

In a preferred embodiment, the sheath 6 has a thickness of 0.6mm and a diameter of 8.2 mm.

Through the structure and the material of using, the utility model discloses a data cable for communication can satisfy 5G communication and use 2 Ghz's transmission frequency, and time delay is little, and speed is high to have advantages such as environmental protection.

Has the advantages that: the utility model discloses a data cable for communication has reduced near-end crosstalk attenuation between the wire pair through the mode of first shielding layer parcel wire pair and the first shielding layer of second shielding layer parcel, electromagnetic interference between the transmission line and external electromagnetic interference have been reduced to pack the space and improve cable construction's stability and reduced signal leakage with overlap joint department and the mode relative of packing the rope through the packing rope, the interference killing feature and the secret performance of product have been improved, the time delay problem of cable has been alleviateed.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A data cable for communication, comprising: the cable comprises four wire pairs, a first insulating layer, a first shielding layer, a filling rope, a second shielding layer and a sheath;

the wire pair comprises two wires which are twisted, a first insulating layer surrounds the wires, the first shielding layer longitudinally covers the wire pair, and the second shielding layer and the sheath sequentially surround the first shielding layer;

the parcel first shielding layer one side of line pair is contradicted each other and is formed the space, and the opposite side supports and leans on the second shielding layer, the filling rope fills the space, just the overlap joint department of first shielding layer with the filling rope is relative.

2. A data cable for communications according to claim 1, wherein said conductive wire is a copper wire.

3. The data cable for communication according to claim 1, wherein the first insulating layer comprises an inner insulating layer, a foamed insulating layer, and an outer insulating layer, and the inner insulating layer, the foamed insulating layer, and the outer insulating layer sequentially wrap the conductive wires.

4. The data cable for communication as recited in claim 3, wherein the first insulating layer is further provided with color stripes thereon, and the first insulating layer and the color stripes are formed in one step by a four-layer co-extrusion technique.

5. The data cable for communication of claim 1, wherein the direction of twist of the conductor is opposite to the direction of twist of the wire pair, and the wire pair is formed by twisting and untwisting the conductor.

6. A data cable for communications according to claim 1, wherein said second shield layer is a copper wire or tinned copper wire braid.

7. The data cable for communication according to claim 1, wherein the first shielding layer is an aluminum foil having a width of 15mm and a thickness of 0.07 mm.

8. The data cable for communications according to claim 1, wherein the thickness of the second shield layer is 0.16 mm.

9. The data cable for communications according to claim 1, wherein the jacket is a low smoke zero halogen flame retardant polyolefin jacket.

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