CN211208027U

CN211208027U - Seven kinds of data cables of high shielding performance

Info

Publication number: CN211208027U
Application number: CN201922326710.4U
Authority: CN
Inventors: 卢加清; 王建明; 索文杰; 陈绍奎; 方辉; 虞健; 周永进; 张玲
Original assignee: Jiangsu Diyi Group Co ltd
Current assignee: Jiangsu Diyi Group Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-07
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a seven types of data cables of high shielding performance in the communication cable field, including four sinle silks, be provided with the wire in the sinle silks, the pair twist setting between the wire, be provided with the conductor in the wire, the periphery of conductor is provided with the insulating layer, the conductor is the annealing copper wire of tandem line, the sinle silks set up in the stranding in situ, the periphery on stranding layer is provided with total shielding layer, total shielding layer's periphery is provided with the sheath, and the stranding in situ is filled has the nylon cross, it has four line chambeies to cut apart through the nylon cross in the layer to become, the sinle silks set up respectively in four line intracavity, and the interference killing feature is strong, improves the data transmission distance of cable, avoids the data packet loss, effectively reduces the wave resistance reflected signal than for transmission loss reduces, reduces return loss, the utility model discloses can be used to communication transmission.

Description

Seven kinds of data cables of high shielding performance

Technical Field

The utility model relates to a communication cable.

Background

The prior art discloses the announcement number as: CN 202720961U, bulletin date 2013.02.06, 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 cable has low anti-interference performance, the data transmission distance and the data packet loss of the cable are influenced, the wave resistance reflection signals of the common seven-class line are large, the transmission loss is increased, and the return loss is difficult to pass.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a seven types of data cables of high shielding performance, the interference killing feature is strong, improves the data transmission distance of cable, avoids data packet loss, effectively reduces the ripples and hinders reflected signal and compare for transmission loss reduces, reduces return loss.

In order to realize the above-mentioned purpose, the utility model provides a seven kinds of data cables of high shielding performance, including four sinle silks, be provided with the wire in the sinle silks, the pair twist setting between the wire, be provided with the conductor in the wire, the periphery of conductor is provided with the insulating layer, the conductor is the annealing copper wire of tandem line, the sinle silks set up in the stranding in situ, the periphery on stranding layer is provided with total shielding layer, total shielding layer's periphery is provided with the sheath, and the stranding in situ is filled there is the nylon cross, it has four line chambeies to cut apart through the nylon cross to become to seize the layer, the sinle silks set up respectively in four line intracavity.

Compared with the prior art, the beneficial effects of the utility model reside in that, the annealing copper wire diameter tolerance of tandem line reaches 0.002mm scope, insulating layer surface is smooth round, guarantee with this that great peak value can not appear in the characteristic impedance of insulating pair twist back cable, the mould adopts the cross nylon mould during the stranding, the cross is added at the center, separate out the complete of every sinle silk, every sinle silk only wraps up around the cross, keep cable construction's stability, make its return loss performance when the high frequency fairly good, the interference killing feature is strong, improve the data transmission distance of cable, avoid data packet loss, effectively reduce the wave drag reflected signal than, make transmission loss reduce, reduce return loss, the utility model discloses can be used to communication transmission.

As a further improvement, the periphery at the conductor is set up to the high density polyethylene internal insulation cover of insulating layer, 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%, guarantees that the attenuation ratio solid insulation's of cable attenuation reduces, and light in weight to this guarantees that great peak value can not appear to the characteristic impedance of insulating pair twist back cable.

As the utility model discloses a further improvement, total shield layer includes aluminium foil layer and tinned copper wire weaving layer, the aluminium foil layer sets up the periphery on the stranding layer, the tinned copper wire weaving layer sets up the periphery on the aluminium foil layer, adopts the double shielding effect that line pair aluminium foil + tinned copper wire woven like this, weaves density and reaches more than 85%, ensures that outside electromagnetic interference does not influence the signal transmission of cable.

As a further improvement, the sheath is made of low-smoke halogen-free flame-retardant polyolefin, so that the cable has better fireproof performance, lower pollution and more environmental protection.

Drawings

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

The cable comprises a sheath 1, a total shielding layer 2, a nylon cross 3, a cabling 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 seven-type data cable with high shielding performance comprises four wire cores, wherein wires are arranged in the wire cores, the wires are arranged in a twisted manner, conductors 6 are arranged in the wires, an insulating layer 5 is arranged on the periphery of each conductor 6, each conductor 6 is a series line annealed copper wire, the wire cores are arranged in a cabling layer 4, a total shielding layer 2 is arranged on the periphery of the cabling layer 4, a sheath 1 is arranged on the periphery of the total shielding layer 2, a nylon cross 3 is filled in the cabling layer 4, the cabling layer is divided into four wire cavities through the nylon cross 3, and the wire cores are respectively arranged in the four wire cavities; the high-density polyethylene inner insulating sleeve of the insulating layer 5 is arranged at the periphery of the conductor 6, the foamed polyethylene middle insulating sleeve is arranged at the periphery of the high-density polyethylene inner insulating sleeve, and the high-density polyethylene outer insulating sleeve is arranged at the periphery of the foamed polyethylene middle insulating sleeve; the main shielding layer 2 comprises an aluminum foil layer and a tinned copper wire braided layer, the aluminum foil layer is arranged on the periphery of the cabling layer 4, and the tinned copper wire braided layer is arranged on the periphery of the aluminum foil 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 diameter tolerance of the annealed copper wire of the tandem line reaches the range of +/-0.002 mm, the concentricity reaches more than 95 percent, and the insulating surface is smooth and round, so that the characteristic impedance of the cable after the insulation pair twisting can not have a larger peak value; the pre-twisting technology and the back-twisting technology in a certain proportion are adopted to eliminate the influence of the eccentricity of the insulated single line on the characteristic impedance; the mould adopts a cross nylon mould during cabling, a cross is added in the center, each pair of wire cores are completely separated, and each pair of wire cores are only wrapped around the cross, so that the stability of the cable structure is kept, and the performance of the return loss of the cable is quite good at high frequency; the double shielding effect of weaving the aluminum foil and the tinned copper wire is adopted, the weaving density reaches more than 85%, and the signal transmission of the cable is not influenced by external electromagnetic interference.

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

1. The utility model provides a seven types of data cables of high shielding performance, includes four sinle silks, be provided with the wire in the sinle silks, the pair twist setting between the wire, be provided with the conductor in the wire, the periphery of conductor is provided with insulating layer, its characterized in that: the conductor is a series line annealed copper wire, the wire core is arranged in the cabling layer, a total shielding layer is arranged on the periphery of the cabling layer, a protective sleeve is arranged on the periphery of the total shielding layer, a nylon cross is filled in the cabling layer, the cabling layer is divided into four wire cavities through the nylon cross, and the wire core is arranged in the four wire cavities respectively.

2. The seven-class data cable with high shielding performance according to claim 1, wherein: the high-density polyethylene inner insulating sleeve of the insulating layer is arranged on the periphery of the conductor, the foamed polyethylene middle insulating sleeve is arranged on the periphery of the high-density polyethylene inner insulating sleeve, and the high-density polyethylene outer insulating sleeve is arranged on the periphery of the foamed polyethylene middle insulating sleeve.

3. The seven-class data cable with high shielding performance according to claim 2, wherein: the total shielding layer comprises an aluminum foil layer and a tinned copper wire woven layer, the aluminum foil layer is arranged on the periphery of the cabling layer, and the tinned copper wire woven layer is arranged on the periphery of the aluminum foil layer.

4. A high shielding performance class seven data cable according to any one of claims 1 to 3, wherein: the sheath is low smoke zero halogen flame retardant polyolefin material.