CN217361213U - Multi-core cable for digital communication - Google Patents

Abstract

The utility model discloses a multi-core cable for digital communication, which comprises a plurality of core wires, wherein each core wire comprises two wires for data transmission, the wires are arranged in parallel and are separated from each other, insulators for coating the two wires are arranged in the core wires, and a first shielding layer and a core wire sleeve are sequentially arranged outside the insulators; a filling layer disposed between the core wires; the moisture-proof layer covers the core wire and the filling layer; the second shielding layer is arranged outside the moisture-proof layer and covers the moisture-proof layer; and the sheath is arranged outside the second shielding layer and wraps the second shielding layer. The multi-core cable for digital communication of this embodiment has good data transmission efficiency, waterproof performance and interference killing feature, can satisfy the wiring demand of modern intelligent building crowd.

Description

Multi-core cables for digital communication

technical field

The utility model relates to the field of communication equipment, in particular to a multi-core cable for digital communication.

Background technique

The modern communication system is the lifeline of the information age. At present, with the continuous improvement of the level of science and technology, people have higher and higher requirements for the transmission efficiency and authenticity of information. The communication cable plays an important role in the process of information transmission. Especially in modern intelligent building groups, especially in high-end residential areas and high-end office buildings, there is a common demand for high-intelligence matching, and high-speed, anti-interference digital communication multi-core cables are required. However, in the past buildings, most of the network cables were arranged for data transmission. Traditional network data technology was used. Most of the network data was transmitted over a single line. The data transmission efficiency was low and the distortion was high, which gradually failed to meet the requirements of modern people.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a multi-core cable for digital communication, which is internally provided with a plurality of core wires for data transmission, each core wire includes two transmission wires, and each core wire is individually shielded to improve data transmission efficiency. and anti-interference ability.

The multi-core cable for digital communication according to the embodiment of the first aspect of the present invention includes: a plurality of core wires, each of which includes two wires for data transmission, the wires are arranged in parallel and mutually spaced apart, an insulator covering two of the wires is arranged inside the core wire, a first shielding layer and a core wire sleeve are sequentially arranged outside the insulator; a filling layer is arranged between the core wires; a moisture-proof layer , the moisture-proof layer covers the core wire and the filling layer; a second shielding layer, the second shielding layer is arranged outside the moisture-proof layer, and the second shielding layer covers the moisture-proof layer; The sleeve is arranged outside the second shielding layer, and the sheath covers the second shielding layer.

The multi-core cable for digital communication according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the multi-core cable for digital communication in this embodiment is provided with a plurality of core wires for data transmission, and each core wire includes Two wires arranged in parallel can effectively improve the data transmission efficiency of the cable; each core wire is provided with a first shielding layer for individual shielding, and a second shielding layer is also provided outside the cable, which is double-shielded to improve the anti-interference ability of the cable ; There is also a moisture-proof layer in the cable, which has good waterproof performance. The multi-core cable for digital communication in this embodiment has good data transmission efficiency, waterproof performance and anti-interference ability, and can meet the wiring requirements of modern intelligent building groups.

According to the multi-core cable for digital communication according to the first aspect of the present invention, the insulator is a foamed thermoplastic material extruded at one time. The foamed thermoplastic material, which is fluid after heating, is extruded into the core wire, and the foamed thermoplastic material is rapidly cooled to become an insulator covering the two wires.

According to the multi-core cable for digital communication according to the first aspect of the present invention, the first shielding layer is a metal film layer covering the insulator, and the metal film is used for shielding, which can further improve the waterproof performance of the core wire.

According to the multi-core cable for digital communication according to the first aspect of the present invention, the filling layer is a velvet-like flame-retardant material, which improves the safety of the cable.

According to the multi-core cable for digital communication according to the first aspect of the present invention, a plurality of reinforcing cores are arranged in the filling layer, the reinforcing cores are distributed between the core wires, and the structure of the cable is strengthened by the reinforcing cores.

According to the multi-core cable for digital communication according to the first aspect of the present invention, the moisture-proof layer is an aluminum film layer, which can effectively isolate the water vapor from infiltrating the cable, and at the same time has a certain shielding effect.

According to the multi-core cable for digital communication according to the first aspect of the present invention, the second shielding layer is a metal mesh layer, which not only plays a shielding role, but also strengthens the structure of the cable.

Additional aspects and advantages of the invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of a multi-core cable for digital communication of the present invention.

Description of reference numbers:

Core wire 100; wire 110; insulator 120; first shielding layer 130; core wire sleeve 140; filling layer 200;

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present utility model, it should be understood that the orientation descriptions related to orientations, such as up, down, front, rear, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, several means one or more, and multiple means two or more. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution .

Referring to FIG. 1 , a preferred embodiment provided by the present invention is a multi-core cable for digital communication, which sequentially includes a sheath 500, a second shielding layer 400, a moisture-proof layer 300, a filler 200 and a plurality of cores from the outside to the inside Line 100.

It should be noted that the sheath 500 is made of insulating material, and has the characteristics of high temperature resistance, cold resistance, wear resistance, etc. The use of the sheath 500 can improve the service life of the cable and avoid external mechanical damage to the cable. The material can isolate the charged conductors of different potentials in electrical equipment, and can also play the role of support and fixation. The cut surface of the sheath 500 can be circular or square. Using different sheaths 500 can adapt to different installation environments, improve the adaptable range of the sheath 500 installation, and help improve installation efficiency.

In some embodiments, the second shielding layer 400 is disposed in the sheath 500 , which can reduce the abrasion of the second shielding layer 400 during the cable installation process and further protect the core wire 100 . The second shielding layer 400 can improve the distribution of the electric field and reduce the partial discharge of the cable. The second shielding layer 400 is a metal mesh layer. The metal mesh layer can further shield the electric field, reduce the interference of the external electric field to the core wire 100, and also reduce the interference of the core wire 100 to the external electric field. At the same time, it can also improve the structural strength of the cable. Can improve the flexibility of the cable.

1 , the core wire 100 is provided with two wires 110 for data transmission. The wires 110 are made of conductive copper wires. The wires 110 can transmit data. The wires 110 are arranged in parallel and spaced apart from each other. The positions of the two wires 110 can be staggered or arranged in parallel. The relative positions of the wires 110 are not limited here, as long as the wires 110 can transmit data normally.

An insulator 120 is provided outside the wire 110. The insulator 120 separates and wraps the wire 110. The insulator 120 can reduce the data interference between the wires 110 and avoid the mutual interference of the electric fields generated when the two wires 110 transmit data. The material used for the insulator 120 is a foamed thermoplastic material extruded at one time. After the thermoplastic material is heated, its fluidity is enhanced, and the heated, fluid-like foamed thermoplastic material is extruded into the core wire 100, so that the thermoplastic material can be completely The two wires 110 are wrapped, and after the thermoplastic material is cooled, the thermoplastic material is filled between the two wires 110. This extrusion-type filling method can effectively improve the installation efficiency and reduce the labor intensity of workers. The insulator 120 is also wrapped with a first shielding layer 130 to serve as a double shield. The first shielding layer 130 wraps the insulator 120 and the two wires 110 , and the first shielding layer 130 can uniformize the wires 110 and the insulating electric field. The first shielding layer 130 uses a metal film layer to cover the insulator 120 , and the metal film can shield the core wire 100 , and can also improve the waterproof capability of the core wire 100 and improve safety. In some embodiments, the first shielding layer 130 can also use a semi-conductive shield, and the semi-conductive shield layer is formed of a semi-conductive material with low resistivity and a thin thickness, which can effectively uniform the electric field on the surface of the core wire 100 and avoid the occurrence of damage caused by the wire The surface of 110 is not smooth and the air gap created by the twisting of the core wire 100 causes partial discharge to occur between the conductor 110 and the insulator 120 . The first shielding layer 130 is also covered with a core wire sleeve 140 , and the core wire sleeve 140 wraps the first shielding layer 130 to avoid friction between the first shielding layer 130 and other fillers, and improve the service life of the core wire 100 .

The core wire 100 includes a wire 110, an insulator 120, a first shielding layer 130, and a core wire sleeve 140. A cable is provided with multiple groups of core wires 100 to realize multi-channel transmission. The multiple groups of core wires 100 can transmit multiple groups at the same time. data, improve transmission efficiency, and reduce distortion. A filling layer 200 is arranged between the core wires 100, and the filling layer 200 is made of a velvet-like flame-retardant material, which can reduce the probability of spontaneous combustion of the cable and further improve the safety. The filling layer 200 is also provided with a reinforcing core 600. The reinforcing core 600 has a reinforcing effect on the cable. The reinforcing core 600 is arranged between the core wires 100. The reinforcing core 600 can improve the radial tensile force of the cable and improve the bending resistance of the cable. In some embodiments, the material of the reinforcing core 600 may be low carbon galvanized steel wire or aramid fiber, and the material of the reinforcing core 600 is not limited herein.

The core wire 100 and the filling layer 200 are covered with a moisture-proof layer 300. The material of the moisture-proof layer 300 is an aluminum film layer. The use of the aluminum film layer can reduce the weight of the cable, and at the same time, it can also prevent external moisture from entering the inside of the cable and reduce short-circuits. The probability. In some embodiments, the moisture-proof layer 300 may use a polymer PE film.

In some embodiments, a multi-core cable for digital communication is connected to the device, data is transmitted through multiple groups of wires 110, and the transmission speed is faster. . A first shielding layer 130 is arranged outside the insulator 120 to wrap the insulator 120 and the wire 110. The first shielding layer 130 is shielded by the metal film wire 110 to shield the electric field of the core wire 100 to prevent the electric field generated by the core wire 100 from affecting other At the same time, the heat dissipation capability of the core wire 100 can also be improved, and the temperature of the core wire 100 can be prevented from being too high.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. Variations, the scope of the present invention is defined by the claims and their equivalents.

Claims (7)

1. A multi-core cable for digital communications, comprising:

the cable comprises a plurality of core wires, a first shielding layer and a core wire sleeve, wherein each core wire comprises two conducting wires for data transmission, the conducting wires are arranged in parallel and are separated from each other, an insulator for coating the two conducting wires is arranged in each core wire, and the first shielding layer and the core wire sleeve are sequentially arranged outside the insulator;

a filling layer disposed between the core wires;

the moisture-proof layer coats the core wire and the filling layer;

the second shielding layer is arranged outside the moisture-proof layer and covers the moisture-proof layer;

and the sheath is arranged outside the second shielding layer and wraps the second shielding layer.

2. The multi-core cable for digital communication as claimed in claim 1, wherein the insulator is a foamed thermoplastic material formed by one-time extrusion.

3. The multi-core cable for digital communication according to claim 1 or 2, wherein the first shielding layer is a metal film layer covering the insulator.

4. The multi-core cable for digital communication as claimed in claim 1, wherein the filling layer is a velvet-like flame retardant material.

5. The multi-core cable for digital communication as claimed in claim 4, wherein a plurality of the strength cores are disposed in the filling layer, and the strength cores are distributed among the core wires.

6. The multi-core cable for digital communication as claimed in claim 1, wherein the moisture barrier is an aluminum film layer.

7. The multi-core cable for digital communication as claimed in claim 1, wherein the second shielding layer is a metal mesh layer.

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