CN104751992A

CN104751992A - Network cable

Info

Publication number: CN104751992A
Application number: CN201510142578.5A
Authority: CN
Inventors: 黄再新
Original assignee: Jiaxing Hundred Million General Data Cable Co Ltds Difficult To Understand
Current assignee: Jiaxing Hundred Million General Data Cable Co Ltds Difficult To Understand
Priority date: 2015-03-30
Filing date: 2015-03-30
Publication date: 2015-07-01

Abstract

The invention discloses a network cable which comprises an outer-layer protecting jacket, a first shielding layer, an inner protecting jacket, tying bands, core lines and a grounding line. One of the core lines is arranged in the middle, the rest core lines are uniformly wound around the core line in the middle, the outside of the core lines is coated by the tying band, a filling rope is arranged in a gap between the tying band and the core lines, the inner protecting jacket is coated outside the tying band, the first shielding layer is coated outside the inner protecting jacket, the inner protecting jacket, the first shielding layer and the tying band are all arranged inside the outer-layer protecting jacket, a tearing rope is arranged on the outer-layer protecting jacket, each core line comprises a protecting jacket layer, four leads and a second shielding layer, each four corresponding leads are wound mutually in a starlike manner, each second shielding layer is coated outside the corresponding leads, and each protecting jacket layer is coated outside the corresponding second shielding layer. Multiple shielding layers are designed, so that shielding effect is improved greatly, crosstalk is reduced to greatest extent, diameter of the network cable is shortened, and the network cable is quite round in integral shape and compact and stable in structure.

Description

A kind of network cable

[technical field]

The present invention relates to the technical field of cable, particularly a kind of technical field of network cable.

[background technology]

At present, along with the development of society, the speed of designed for communications cables Cheng Genggao and transmission frequency, it is unsuccessful cross-talk being reduced to tolerable injury level that the isolation of insulation builds verified, the known twisted cable of at least some comprises the isolation as shield member work, these interlayers comprise metal insert, and these metal inserts are enclosed in the insulating element of insulation.These traditional insulating elements make and assemble costly.In addition, these shielding interlayers keep relatively thick, thus cause cable bulky, when staff is carrying out, in cable laying process, being easy to destroy outer jacket in laid processes.

Generally often earth cable is wound bunch of cables together with signal cable at data cable; the many employings of data cable of the prior art many signal cables and earth cable are wound cable core mutually; again at cable core periphery parcel screen or protective sleeve, to reduce line transmission attenuation constant.But this structure still has deficiency, one is in data transmission procedure, and in signal cable, the signal of different frequency always can disturb mutually, and the earth cable be mutually wound around with it can strengthen interference signal; Two is interference that data cable not only can be subject to external electromagnetic ripple, but also is likely subject to the impact of pulse voltage.

[summary of the invention]

Object of the present invention solves the problems of the prior art exactly, proposes a kind of network cable, and the diameter of this cable is little, compact conformation rounding, can reduce cross-talk by the design of multilayer screen layer, in and interference signal, and improve the transmission quality of data cable.

For achieving the above object, the present invention proposes a kind of network cable, comprise outer protective sleeve, the first screen, inner sheath, band, heart yearn, earth connection, wherein a heart yearn is arranged at central authorities, remaining heart yearn is wrapped in around central heart yearn uniformly, heart yearn is outside coated by band, between band and heart yearn, space is provided with gasket for packing, described inner sheath is coated on band outside, the outside of inner sheath is coated with the first screen, the inside of outer protective sleeve is all located at by described inner sheath, the first screen, band, and described outer protective sleeve is provided with tears rope;

Described heart yearn comprises restrictive coating, wire, secondary shielding layer, and the quantity of described wire is 4,4 mutual star twistings of wire, the outside coated secondary shielding layer of wire, the outside coated restrictive coating of secondary shielding layer.

As preferably, described restrictive coating is provided with earth connection, and earth connection adopts the drain wire of 0.50TC.

As preferably, described wire comprises crust, conductor, endothelium, the 3rd screen and foaming layer, and described conductor is coated by the 3rd screen institute, and described 3rd screen and conductor are all located at the inside of endothelium, endothelium outside is provided with foaming layer, and foaming layer is outside coated by crust institute.

As preferably, a kind of low-density polyethylene material of described endothelium is made, and the material of described crust is low-density polypropylene, and foaming layer is that a kind of polyolefine material through physical blowing is made, the frothing percentage of foaming layer is no more than 50%, and described conductor is tinned wird.

As preferably, described crust, endothelium and foaming layer are inter-adhesive by extrusion die, reduce the diameter of network cable.

As preferably, described outer protective sleeve all adopts PVC pvc material with the inner sheath being wrapped in inner side, described gasket for packing adopts PE polythene material, inner sheath is also provided with the polyester layer of the wrapped formation of polyester belt, described polyester layer thickness is 0.5 ~ 1.5mm, compact conformation is stablized, and adds the roundness of cable, plays a cushioning effect.

As preferably, described band has selected the PAEK material with withstand high temperatures highly aggressive environment capacity to make.

As preferably; described first screen is made up of copper-plated mylar; described secondary shielding layer is made up of aluminium foil and the mesh grid of magnalium silk, and the 3rd described screen is the aluminium foil double-sided self-adhesive structure that PET protection film is posted in a kind of outside, and the design of multi-shielding layer improves shield effectiveness greatly.

Beneficial effect of the present invention: a kind of network cable of the present invention and other network cables unlike, the present invention is provided with the first screen, secondary shielding layer and the 3rd screen, wherein the first screen is made up of copper-plated mylar, secondary shielding layer is a kind of shielding of anti-cross-talk, the basis of aluminium foil increases the structure of layer of metal mesh grid, described metal establishment net is magnalium silk establishment net, 3rd screen is the aluminium foil double-sided self-adhesive structure that PET protection film is posted in a kind of outside, the present invention is by the shielding of multilayer, substantially increase shield effectiveness, not only reduce the interference signal that data cable produces, reduce cross-talk effect, and reduce the diameter of network cable, make whole cable shape rounding very simultaneously, structure is more stable, aesthetic in appearance.

Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.

[accompanying drawing explanation]

Fig. 1 is the sectional structure chart of a kind of network cable of the present invention;

Fig. 2 is the structural representation of heart yearn of the present invention;

Fig. 3 is the structural representation of wire of the present invention.

In figure: 1-outer protective sleeve, 2-first screen, 3-inner sheath, 4-band, 5-heart yearn, 6-tear rope, 7-gasket for packing, 51-restrictive coating, 52-wire, 53-secondary shielding layer, 54-earth connection, 511-crust, 512-conductor, 513-endothelium, 514-the 3rd screen, 515-foaming layer.

[embodiment]

Consult Fig. 1, Fig. 2 and Fig. 3, a kind of network cable of the present invention, comprises outer protective sleeve 1, first screen 2, inner sheath 3, band 4, heart yearn 5, earth connection 6, wherein a heart yearn 5 is arranged at central authorities, remaining heart yearn 5 is wrapped in central heart yearn 5 around uniformly, heart yearn 5 outside is coated by band 4, between band 4 and heart yearn 5, space is provided with gasket for packing 7, it is outside that described inner sheath 3 is coated on band 4, and the outside of inner sheath 3 is coated with the first screen 2, described inner sheath 3, first screen 2, the inside of outer protective sleeve 1 is all located at by band 4, and described outer protective sleeve 1 is provided with tears rope 6, and described heart yearn 5 comprises restrictive coating 51, wire 52, secondary shielding layer 53, the outside coated secondary shielding layer 53 of described wire 52, the outside coated restrictive coating 51 of secondary shielding layer 53, the quantity of wire 52 is 4,4 wires 52 star twisting mutually, star twisting is for pair twist, have gravity light, outer insulation diameter is little, more the advantage such as soft easy assembling, shortcoming is that cost is high, and technique manufacture difficulty is large.

Described restrictive coating 51 is provided with earth connection 54, earth connection 54 adopts the drain wire of 0.50TC, described wire 52 comprises crust 511, conductor 512, endothelium 513, 3rd screen 514 and foaming layer 515, described conductor 512 is coated by the 3rd screen 514 institute, described 3rd screen 514 and conductor 512 are all located at the inside of endothelium 513, endothelium 513 outside is provided with foaming layer 515, foaming layer 515 outside is coated by crust 511 institute, a kind of low-density polyethylene material of described endothelium 513 is made, the material of described crust 511 is low-density polypropylene, foaming layer 515 is that a kind of polyolefine material through physical blowing is made, the frothing percentage of foaming layer 515 is no more than 50%, described conductor 512 is tinned wird, described crust 511, endothelium 513, inter-adhesive by extrusion die with foaming layer 515, the design of the insulating barrier of this seed coat-bubble-skin structure, serve the effect of Moisture-proof corrosion-proof, when electric capacity is equal, diameter is little, cost is low.

Described outer protective sleeve 1 all adopts PVC pvc material with the inner sheath 3 being wrapped in inner side; described gasket for packing 7 adopts PE polythene material; the cross section of gasket for packing 7 is circular configuration; make the shape rounding very of cable; the design of duplex sheath improves the protective value of cable; enhance the resistance to compression resistance to tension of cable, thus extend the useful life of cable.

Described inner sheath 3 is also provided with the polyester layer of the wrapped formation of polyester belt, polyester layer thickness is 0.5 ~ 1.5mm, when the effect being subject to external force, play the effect of buffering, described band 4 has selected the PAEK material with withstand high temperatures highly aggressive environment capacity to make, be wrapped in outermost outer protective sleeve 1 to be provided with and to tear rope 6, tear rope 6 and there is the effect that tension drags, two is heats that absorbing cable in use distributes, three is prevent the mutual adhesion of cable rubber, this project organization is simply compact, and design science is reasonable, and external form on the whole rounding is attractive in appearance.

A kind of network cable of the present invention, with other cables unlike, be provided with multilayer screen layer, first screen 2 is made up of copper-plated mylar, play the effect of sub-shield, secondary shielding layer 53 is a kind of anti-cross-talk shieldings, the basis of aluminium foil increases the structure of layer of metal mesh grid, described metal establishment net is magnalium silk establishment net, 3rd screen 514 is aluminium foil double-sided self-adhesive structures that PET protection film is posted in a kind of outside, can be separately each conductor screen electromagnetic wave and interference, by the design of this multilayer screen, shield effectiveness can be increased greatly, reduce the interference signal that data cable produces, reduce cross-talk effect to greatest extent, ensure that the transmission quality of network cable.

Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.

Claims

1. a network cable, it is characterized in that: comprise outer protective sleeve (1), first screen (2), inner sheath (3), band (4), heart yearn (5), earth connection (6), wherein a heart yearn (5) is arranged at central authorities, remaining heart yearn (5) is wrapped in central heart yearn (5) around uniformly, heart yearn (5) is outside coated by band (4), between band (4) and heart yearn (5), space is provided with gasket for packing (7), it is outside that described inner sheath (3) is coated on band (4), the outside of inner sheath (3) is coated with the first screen (2), described inner sheath (3), first screen (2), the inside of outer protective sleeve (1) is all located at by band (4), described outer protective sleeve (1) is provided with tears rope (6),

Described heart yearn (5) comprises restrictive coating (51), wire (52), secondary shielding layer (53), the quantity of described wire (52) is 4,4 wires (52) star twisting mutually, the outside coated secondary shielding layer (53) of wire (52), the outside coated restrictive coating (51) of secondary shielding layer (53).

2. a kind of network cable as claimed in claim 1, is characterized in that: described restrictive coating (51) is provided with earth connection (54), and earth connection (54) adopts the drain wire of 0.50TC.

3. a kind of network cable as claimed in claim 1, it is characterized in that: described wire (52) comprises crust (511), conductor (512), endothelium (513), the 3rd screen (514) and foaming layer (515), described conductor (512) is coated by the 3rd screen (514) institute, described 3rd screen (514) and conductor (512) are all located at the inside of endothelium (513), endothelium (513) outside is provided with foaming layer (515), and foaming layer (515) is outside coated by crust (511) institute.

4. a kind of network cable as claimed in claim 3, it is characterized in that: a kind of low-density polyethylene material of described endothelium (513) is made, the material of described crust (511) is low-density polypropylene, foaming layer (515) is that a kind of polyolefine material through physical blowing is made, the frothing percentage of foaming layer (515) is no more than 50%, and described conductor (512) is tinned wird.

5. a kind of network cable as claimed in claim 4, is characterized in that: described crust (511), endothelium (513) and foaming layer (515) are inter-adhesive by extrusion die.

6. a kind of network cable as claimed in claim 1, it is characterized in that: described outer protective sleeve (1) and be wrapped in inner side inner sheath (3) all adopt PVC pvc material, described gasket for packing (7) adopts PE polythene material, inner sheath (3) is also provided with the polyester layer of the wrapped formation of polyester belt, described polyester layer thickness is 0.5 ~ 1.5mm.

7. a kind of network cable as claimed in claim 1, is characterized in that: described band (4) has selected the PAEK material with withstand high temperatures highly aggressive environment capacity to make.

8. a kind of network cable according to any one of claim 1 to 7; it is characterized in that: described first screen (2) is made up of copper-plated mylar; described secondary shielding layer (53) is made up of aluminium foil and the mesh grid of magnalium silk, and the 3rd described screen (514) is the aluminium foil double-sided self-adhesive structure that PET protection film is posted in a kind of outside.