CN200990263Y - Novel broadband communication cable - Google Patents

Abstract

The utility model discloses a novel broadband communication cable, which comprises a plurality of line pairs, wherein the line pairs are formed by twisting two conductors and insulating layers outside the conductors, wrapping belts are arranged on the peripheries of the line pairs, sheaths are arranged on the peripheries of the wrapping belts, and a combined shielding layer is arranged between the wrapping belts and the sheaths and consists of aluminum foils and metal woven layers; the utility model discloses a combination formula shielding, for single shielding, there is better shielding effect.

Description

New Broadband Communication Cable

technical field

The utility model relates to a novel broadband communication cable.

Background technique

With the continuous deepening of my country's reform and opening up and the rapid development of economic construction, the communication industry has entered a new period of great development, and the demand for communication cables as a communication artery will increase rapidly. As an important component of communication signal transmission, communication cables are spread all over the world. Therefore, people's requirements for the performance of communication cables, such as flame retardancy, moisture resistance, and shielding, are increasing day by day.

Communication cables currently on the market are composed of several wire pairs to form a cable core. The outside of the cable core is covered with a sheath with moisture-proof and anti-corrosion effects. Each wire pair is twisted by a copper conductor and an insulating layer on it. . Although this type of cable has a strong transmission effect, it also has the following disadvantages:

1. Most of the conductors of existing cables are made of copper, and the price of copper remains high, which will inevitably lead to high costs;

2. Most of the existing cables use a single shield, and the shielding effect is limited;

3. Most of the existing cables use PVC outer sheath. Although the PVC outer sheath has certain flame retardant properties, its oxygen index is only about 30. Once a fire occurs, it is extremely easy to burn and will produce a large amount of Smoke, difficult to meet safety requirements and environmental protection requirements.

Contents of the invention

The purpose of the utility model is to provide a new type of broadband communication cable. The cable adopts combined shielding, that is, plastic-coated aluminum foil and wire braided shielding. Compared with single shielding, it has a better shielding effect.

The technical scheme of the utility model is: a new type of broadband communication cable, including several wire pairs, the wire pairs are formed by twisting two conductors and the insulating layer outside the conductors, and the periphery of the several wire pairs is provided with tape , There is a sheath on the periphery of the tape, and a combined shielding layer is provided between the tape and the sheath, and the combined shielding layer is composed of aluminum foil and a metal braid.

The further technical solution of the utility model is: a new type of broadband communication cable, including several wire pairs, the wire pairs are twisted by two conductors and the insulating layer outside the conductors, and the periphery of the several wire pairs is provided with a wrapping There is a sheath on the periphery of the tape, and a combined shielding layer is provided between the tape and the sheath. The combined shielding layer is composed of aluminum foil and a metal braid; the conductor is made of an aluminum core and is wrapped outside the aluminum core composed of copper layers.

The more detailed technical solution of the utility model is: a new type of broadband communication cable, including several wire pairs, the wire pairs are twisted by two conductors and the insulating layer outside the conductors, and the periphery of the several wire pairs is provided with Tape, the outer periphery of the tape is provided with a sheath, and a combined shielding layer is provided between the tape and the sheath. The combined shielding layer is composed of aluminum foil and metal braiding layer; the conductor is composed of an aluminum core and an aluminum core The outer copper layer is formed; the tape is axially provided with a grounding wire; the inner wall of the sheath is axially provided with a tear rope; the sheath is made of flame-retardant PVC or environmentally friendly low-smoke halogen-free flame-retardant Made of polyolefin material.

The utility model advantage is:

1. The utility model adopts combined shielding, that is, plastic-coated aluminum foil plus wire braided shielding, which has a better shielding effect than single shielding.

2. When the frequency of the interference electromagnetic field is high, the utility model can use the eddy current generated in the metal material with low resistivity to form a counteracting effect on the external electromagnetic wave, thereby achieving the effect of shielding.

3. The frequency of broadband cable transmission is high. When the signal is transmitted in the conductor, due to the skin effect, the signal is mainly transmitted on the surface of the conductor, so copper-clad aluminum can be used as the conductor of the cable. The signal is mainly transmitted in the copper layer, and only a small amount of signal is transmitted in the relatively weak aluminum conductor, which has little effect on the transmission effect, but greatly reduces the cost of the product, especially in today's tight non-ferrous metal copper, Can create very good economic and social benefits.

4. The sheath of the utility model is made of flame-retardant PVC or environmentally friendly low-smoke halogen-free flame-retardant polyolefin material, which meets the safety requirements or environmental protection requirements in practical applications, and is convenient to enter the international market.

5. In the utility model, tearing ropes are arranged axially on the inner wall of the sheath, so that the sheath layer can be easily and quickly divided during use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of conductor in the utility model;

Among them: 1 wire pair 2 conductor 3 insulation layer 4 tape 5 sheath 6 combined shielding layer; 7 grounding wire; 8 tearing rope;

21 aluminum core 22 copper layer.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: As shown in Figure 1 and Figure 2, a new type of broadband communication cable includes several wire pairs 1, and the wire pairs 1 are twisted by two conductors 2 and an insulating layer 3 outside the conductor 2, and several wire pairs The outer periphery of the pair 1 is provided with a strap 4, the strap 4 is axially provided with a grounding wire 7, the periphery of the strap 4 is provided with a sheath 5, and the inner wall of the sheath 5 is axially provided with a tear rope 8, and the strap A combined shielding layer 6 is provided between 4 and the sheath 5, and the combined shielding layer 6 is composed of aluminum foil and metal braiding layer.

The conductor 2 is composed of an aluminum core 21 and a copper layer 22 covering the aluminum core 21 . Due to the high frequency of broadband cable transmission, when the signal is transmitted in the conductor 2, due to the skin effect, the signal is mainly transmitted on the surface of the conductor 2, so copper-clad aluminum can be used as the conductor 2 of the cable. Signals are mainly transmitted in the copper layer 22, and only a small amount of signals are transmitted in the relatively weak aluminum core 21, which has little influence on the transmission effect, but greatly reduces the cost of the product, especially in areas where non-ferrous metal copper is relatively tight. Today, it can create good economic and social benefits.

The above-mentioned sheath 5 is made of flame-retardant PVC or environmentally friendly low-smoke halogen-free flame-retardant polyolefin material, which meets the safety requirements or environmental protection requirements in practical applications, and is convenient for entering the international market.

The utility model adopts a combined shield 6, that is, a plastic-coated aluminum foil plus a metal wire braided shield, which has a better shielding effect than a single shield.

The utility model is axially provided with a tearing rope 8 on the inner wall of the sheath 5, so that the sheath 5 can be divided conveniently and rapidly during use.

Claims (5)

1. New Broadband Telecommunication Cable, comprise that several lines are to (1), line to (1) by outer stranded the forming of insulating barrier (3) of two conductors (2) and conductor (2), it is characterized in that: described several lines are provided with band (4) to the periphery of (1), the periphery of band (4) is provided with sheath (5), be provided with combined shielding layer (6) between band (4) and the sheath (5), combined shielding layer (6) is made of aluminium foil and wire sheathing.

2. according to the described New Broadband Telecommunication Cable of claim 1, it is characterized in that: described conductor (2) is by aluminium core (21) and be coated on outer copper layer (22) formation of aluminium core (21).

3. according to the described New Broadband Telecommunication Cable of claim 1, it is characterized in that: axially be provided with earth connection (7) on the described band (4).

4. according to the described New Broadband Telecommunication Cable of claim 1, it is characterized in that: be axially arranged with on described sheath (5) inwall and tear rope (8)

5. according to claim 1 or 4 described New Broadband Telecommunication Cables, it is characterized in that: described sheath (5)) make by flame-proof PVC or low-smoke halide-free fireproof composite polyolefine material.

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