CN211208087U - Novel super seven-class high-speed digital symmetrical communication cable - Google Patents

Abstract

The utility model discloses a novel super seven types of high-speed digital symmetrical communication cable in the communication cable field, including the sinle silk, the sinle silk is provided with four, the pair twist sets up between the sinle silk, the pair twist pitch is 9-20, the sinle silk periphery is wrapped and is had the cabling layer, the periphery of cabling layer is provided with total shielding layer, the periphery of total shielding layer is provided with the sheath; when twisting, reduce the pair twist pitch, make the pair twist pitch in 9-20 within ranges, make four sinle silk pair twists closely together, reduce the direct crosstalk interference of four pair twists, and keep out external electromagnetic interference through total shielding layer, make the highest transmission frequency of cable highly reach 1200MHZ, satisfy asynchronous transmission mode or higher giga LAN technique, and can offset the electromagnetic radiation of high-speed network itself and external electromagnetic interference, the utility model discloses can be used to communication transmission.

Description

Novel super seven-class high-speed digital symmetrical communication cable

Technical Field

The utility model relates to a communication cable.

Background

The prior art discloses the announcement number as: CN 202720961U, bulletin date 2019.02.06, discloses a bending-resistant high-frequency communication cable, which comprises 8 conductor single wires, wherein the 8 conductor single wires are twisted two by two to form four twisted wire pairs; the conductor single wire is formed by twisting 7 strands of conducting wire wires, and each conducting wire consists of a steel wire positioned in the center and a copper layer positioned on the outer surface of the steel wire; the outer surfaces of the twisted wire pairs are coated with insulating layers, an outer sheath layer is coated on the outer sides of the four groups of twisted wire pairs, the diameter of each wire is 0.16-0.2 mm, and the outer sheath layer is a polyethylene or polyvinyl chloride layer. The utility model discloses high frequency digital cable forms and has the new conductor structure that is equal to pure copper conductor transmission characteristic, is applied to the digital cable and conducts the signal of telecommunication, and the product satisfies digital cable's transmission performance, and has good bending resistance ability, and product cost greatly reduced has considerable economic benefits and social. The working frequency is low, which can not satisfy asynchronous transmission mode or higher gigabit LAN technology, and can not counteract the electromagnetic radiation of high speed network itself and the external electromagnetic interference.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel super seven types of high-speed digital symmetry communication cables satisfy asynchronous transfer mode or higher giga LAN technique to can offset the electromagnetic radiation and the external electromagnetic interference of high-speed network itself.

In order to realize the above-mentioned purpose, the utility model provides a novel super seven types of high-speed digital symmetric communication cables, including the sinle silk, the sinle silk is provided with four, the pair twist sets up between the sinle silk, the pair twist pitch is 9-20, the sinle silk periphery is around there being the stranding layer, the periphery on stranding layer is provided with total shield layer, total shield layer's periphery is provided with the sheath.

Compared with the prior art, the beneficial effects of the utility model reside in that, when twisting, reduce the pair twist pitch for the pair twist pitch is in 9-20 within ranges, makes four sinle silk pair twists closely together, reduces the direct crosstalk interference of four pair twists, and supports external electromagnetic interference through total shielding layer, makes the highest transmission frequency of cable highly reach 1200MHZ, satisfies asynchronous transmission mode or higher giga LAN technique, and can offset the electromagnetic radiation and external electromagnetic interference of high-speed network itself, the utility model discloses can be used to communication transmission.

As a further improvement, the sinle silk includes two wires, the mutual pair twist setting of wire, the conductor periphery of wire is provided with the insulating layer, the high density polyethylene internal insulation cover of insulating layer sets up the periphery at the conductor, the periphery of high density polyethylene internal insulation cover is provided with insulating cover in the foaming polyethylene, insulating cover's periphery is provided with high density polyethylene external insulation cover in the foaming polyethylene, adopts the three-layer to crowd foaming polyethylene altogether insulating, and the concentricity reaches more than 95%, the cable attenuation and self cable weight that reduce, greatly reduced the cable when laying perpendicularly because cable self weight overweight and lead to the breaking of conductor heart yearn, improved cable strength, further promoted cable transmission frequency simultaneously.

As a further improvement, the periphery of the wire is wrapped with the branch shielding layer that the aluminium foil dragged the package and adopts the branch shielding layer that the aluminium foil dragged the package, can offset the electromagnetic radiation who tells the network itself.

As a further improvement, the total shielding layer is a tinned copper wire braid layer, so that the resistance of the cable to external electromagnetic interference can be further improved.

As a further improvement, the sheath is a low-smoke halogen-free flame-retardant polyolefin material, so that the fireproof performance of the cable can be improved, the pollution is reduced, and the environmental protection performance is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The cable comprises a sheath 1, a total shielding layer 2, a cabling layer 3, a split shielding layer 4, an insulating layer 5 and a conductor 6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

the novel seven-class high-speed digital symmetrical communication cable shown in fig. 1 comprises four wire cores, wherein the wire cores are arranged in a pair-twisting mode, the pair-twisting pitch is 9-20, a cabling layer 3 is wound around the periphery of each wire core, a main shielding layer 2 is arranged on the periphery of the cabling layer 3, and a sheath 1 is arranged on the periphery of the main shielding layer 2; the cable core comprises two wires, the wires are twisted in pairs, an insulating layer 5 is arranged on the periphery of a conductor 6 of each wire, a high-density polyethylene inner insulating sleeve of the insulating layer 5 is arranged on the periphery of the conductor 6, a foamed polyethylene middle insulating sleeve is arranged on the periphery of the high-density polyethylene inner insulating sleeve, and a high-density polyethylene outer insulating sleeve is arranged on the periphery of the foamed polyethylene middle insulating sleeve; the periphery of the lead is wrapped with a sub-shielding layer 4 of an aluminum foil bale; the total shielding layer 2 is a tinned copper wire braided layer; the sheath 1 is made of low-smoke halogen-free flame-retardant polyolefin.

In the utility model, three-layer co-extrusion foaming polyethylene insulation is adopted, the concentricity reaches more than 95%, the cable attenuation and the self cable weight are reduced, and the breakage of the conductor 6 core wire caused by the overweight of the cable when the cable is vertically laid is greatly reduced; the highest transmission frequency of the cable is up to 1200MHZ, and when the cable is twisted in pairs, the twist pitch is reduced, so that the twist pitch is 9-20, four pairs of twists are tightly combined, and the direct crosstalk interference of the four pairs of twists is reduced; the double shielding effect of the line pair aluminum foil shielding and the cable core total shielding is adopted to offset the electromagnetic radiation of the high-speed network and the external electromagnetic interference, the asynchronous transmission mode or the higher gigabit local area network technology is met, and the electromagnetic radiation of the high-speed network and the external electromagnetic interference can be offset.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims (5)

1. The utility model provides a novel super seven high-speed digital symmetry communication cables of class, includes the sinle silk, its characterized in that: the cable comprises four wire cores, wherein the wire cores are arranged in a pair-twisting mode, the pair-twisting pitch between the wire cores is 9-20, a cabling layer is wound on the periphery of each wire core, a main shielding layer is arranged on the periphery of the cabling layer, and a sheath is arranged on the periphery of the main shielding layer.

2. The novel ultra-seven class high speed digital symmetric communication cable according to claim 1, wherein: the cable core comprises two wires, the wires are arranged in a twisted-pair mode, an insulating layer is arranged on the periphery of each conductor, a high-density polyethylene inner insulating sleeve of the insulating layer is arranged on the periphery of each conductor, a foamed polyethylene middle insulating sleeve is arranged on the periphery of each high-density polyethylene inner insulating sleeve, and a high-density polyethylene outer insulating sleeve is arranged on the periphery of each foamed polyethylene middle insulating sleeve.

3. The novel ultra-seven class high speed digital symmetric communication cable according to claim 2, wherein: and the periphery of the lead is wrapped with a sub-shielding layer of an aluminum foil bale.

4. The novel ultra-seven class high speed digital symmetric communication cable according to claim 3, wherein: the total shielding layer is a tinned copper wire braided layer.

5. The new type ultra-seven high speed digital symmetric communication cable according to any one of claims 1-4, wherein: the sheath is low smoke zero halogen flame retardant polyolefin material.

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