CN102034574A

CN102034574A - USB-3V cable line having novel metal wire woven shielding layer

Info

Publication number: CN102034574A
Application number: CN 201010545514
Authority: CN
Inventors: 汪恩浩; 马沛
Original assignee: ZHUHAI JIAHUI ELECTRICAL INDUSTRIAL Co Ltd
Current assignee: ZHUHAI JIAHUI ELECTRICAL INDUSTRIAL Co Ltd
Priority date: 2010-11-16
Filing date: 2010-11-16
Publication date: 2011-04-27

Abstract

The invention relates to a USB-3V cable line having a novel metal wire woven shielding layer, which comprises a coated insulation layer, an outer shielding layer, a ground wire, an outer metal foil shielding layer, at least one pair of signal line sets (X1 and X2), at least one pair of signal wirings (P1 and P2) and a pair of power wirings (D1 and D2), wherein the ground wire is one copper wire or a stranded copper line comprising multiple copper wires; and the outer shielding layer is a metal wire woven shielding layer formed by weaving 15 strands of aluminum-magnesium alloy wires and the ground wire, and is used for blocking loss of signals and preventing static electricity.

Description

A kind of USB-3V cable with novel metal silk woven shield

[technical field]

The present invention relates to the high-frequency data communication cable in network communications technology field, relate in particular to a kind of USB-3V cable with novel metal silk woven shield.

[background technology]

At present, information age, be widely used in mobile phone, computer, the USB-3V of signal transmission has replaced traditional USB2.0 and 1.0 between the hardware devices such as disk, promptly be with USB-3V standard the replacement gradually of third generation cable traditional first generation cable USB1.0 and second generation cable USB2.0.Wherein, the screen of USB-3V cable, as shown in Figure 1, generally form by aluminium foil internal shield 4 and outer shielding layer 2 two parts, the effect of aluminium foil internal shield 4 is to eliminate the rough influence of conductive surface, because rough meeting causes the increase of holding wire (X1, X2) Electric Field Indensity on Surface of Conductor, after the employing shielding, can make inner insulating layer X10 and holding wire conductor X11 have excellent contact; Outer shielding layer 2 is because aluminum-magnesium alloy wire is weaved into fine and close braid on seam loop, form so-called aluminum-magnesium alloy wire woven shield, its effect makes the metallic sheath of aluminum-magnesium alloy wire braiding formation and is insulated layer 1 outward excellent contact, to prevent that the USB-3V cable is in running, because it is different to be insulated the sheath coefficient of expansion of layer 1 and inside outward, cause outer being insulated between layer and sheath the gap to occur, produce free discharge, so after in the phase-splitting sheath, having added insulation and external shield, though be insulated between layer 1 and the sheath gapped but can not form free discharge outward, only there are electromagnetic current and static, because the outer shielding layer 2 that aluminum-magnesium alloy wire is woven into, its magnalium silk goes above cannot directly being welded on metalwork, can not derive the static that produces by outer shielding layer 2, general way is, between the outer shielding layer 2 that aluminium foil internal shield 4 and aluminum-magnesium alloy wire are woven into, place the ground wire 3 that adopts the stranded formation of stranded copper wire, by the aluminium foil of ground wire 3 with aluminium foil internal shield 4, the aluminum-magnesium alloy wire of outer shielding layer 2 closely receives electromagnetic current and static, thereby plays shielding action.Therefore, ground wire 3 is very important in the process of external shield with the aluminum-magnesium alloy wire braid excellent contact of outer shielding layer 2, tradition adopts the way of placing copper wire ground wire 3 between internal shield 4 and the outer shielding layer 2, the one, cause the aluminum-magnesium alloy wire of outer shielding layer 2 well to contact with ground wire 3, the 2nd, make ground wire 3 owing to increase one copper wire between internal shield 4 and the outer shielding layer 2, be easy to generate the gap, make conductive surface smoothly to connect, influence the signal delivery quality of USB-3V cable.

[summary of the invention]

Purpose of the present invention is for providing a kind of USB-3V cable, and simple in structure, the convenient processing and manufacture of its metal wire knitted screen connect smoothly, effectively guarantee the roundness of cable can further improve signal transmission quality.

For achieving the above object, the technical solution used in the present invention is:

A kind of USB-3V cable with novel metal silk woven shield, comprise outer be insulated layer, outer shielding layer, ground wire, outer metal forming screen, at least one pair of signal line group (X1, X2), at least one pair of signal wiring (P1, P2), a pair of power supply wiring (D1, D2); Described ground wire is made of one copper cash that a copper wire or many copper wires are twisted into; Described outer shielding layer belongs to silk by 15 strands almag and weaves the metal wire knitted screen that forms with described ground wire and constitute, the loss of block signal and prevent static.

Aforesaid a kind of USB-3V cable with novel metal silk woven shield, wherein, described outer metal forming screen is two-sided foil shielding layer or single face foil shielding layer.

Advantage of the present invention: the outer screen of USB-3V cable of the present invention is to be woven by one stranded ground wire of 15 strands aluminum-magnesium alloy wire and many copper wires to form, with 16 strands of traditional method all be the outer screen that aluminum-magnesium alloy wire is compiled into, contact with stranded one ground wire of many copper wires again and compare, just can be connected closely in 15 strands the aluminum-magnesium alloy wire compilation process with one ground wire, well with the aluminum-magnesium alloy wire contact matching of outer screen, the effectively loss of block signal and prevent static.Like this, electrostatic current is by the conducting of magnalium silk, be delivered to ground wire, well pass to the two ends of cable connector again through the drainage of ground wire, so on the one hand ground wire is well contacted with aluminum-magnesium alloy wire, make the shield effectiveness of cable stronger, no matter the environment for use of cable is light current magnetic field or high-intensity magnetic field, as long as cable there is the external interference signal of certain influence, just can be by the collection of magnalium silk, be delivered to ground wire rapidly, drain into the earth, thereby played good shield effectiveness; On the other hand because the outer screen of aluminum-magnesium alloy wire braiding and be insulated layer outward outward all without any wire can guarantee the roundness of cable, the cable outward appearance rounding after the processing, both artistic and practical; Moreover, adopt 15 strands of magnalium silks and 1 strand of outer screen that ground wire is woven into, save one magnalium silk, thereby reduced the cost of material of cable.

[description of drawings]

Fig. 1 is the cross section structure schematic diagram of USB-3V cable in the prior art;

Fig. 2 is the cross section structure schematic diagram of USB-3V cable of the present invention;

Fig. 3 is the structural representation of USB-3V cable of the present invention.

[embodiment]

As shown in Figures 2 and 3, present embodiment provides a kind of USB-3V cable with novel metal silk woven shield, comprise outer layer 1, outer shielding layer 2, ground wire 3, outer metal forming screen 4, a pair of signal line group (X1, X2) of being insulated, a pair of signal wiring (P1, P2), a pair of power supply wiring (D1, D2); Described ground wire 3 is made of one copper cash that many copper wires are twisted into; Described outer shielding layer 2 is made of with the metal wire knitted screen that described ground wire 3 braidings form 15 strands almag genus silk 20, outer shielding layer adopts 15 strands almag to belong to silk 20 and weaves the structure that forms with one ground wire 3, simplified the internal structure of cable, can make ground wire 3 and aluminum-magnesium alloy wire 20 good contact matching in compilation process, the effectively loss of block signal and prevent static, make the shield effectiveness of cable stronger, no matter be light current magnetic field or high-intensity magnetic field, as long as cable there is the external interference signal of certain influence, just can belong to the collection of silk 20 by almag, be delivered to ground wire 3 rapidly, drain into the earth, thereby played good shield effectiveness; Simultaneously,, further improve the roundness of cable outward because almag belongs to the outer screens 2 of silk 20 braidings and is insulated outside the layer 1 (PVC is outer by sheath) all without any wire, the cable outward appearance rounding after the processing, both artistic and practical.In addition, this USB-3V cable adds man-hour, and outer metal forming screen 4 adopts the single face aluminium foil as screen, can reduce processing technology, well conservation cost and technology cost.

The present invention can also have other distortion, is not subjected to the restriction as shown in the figure as the logarithm of signal line group, can also be four pairs, six pairs or the like; In a word, do conspicuous change, and other every change that does not break away from patent essence of the present invention all should be included within the described scope of claim according to the prompting of above-mentioned example.

Claims

1. USB-3V cable with novel metal silk woven shield, comprise outer be insulated layer, outer shielding layer, ground wire, outer metal forming screen, at least one pair of signal line group (X1, X2), at least one pair of signal wiring (P1, P2), a pair of power supply wiring (D1, D2); It is characterized in that:

Described ground wire is made of one copper cash that a copper wire or many copper wires are twisted into;

Described outer shielding layer belongs to silk by 15 strands almag and weaves the metal wire knitted screen that forms with described ground wire and constitute, the loss of block signal and prevent static.

2. a kind of USB-3V cable with novel metal silk woven shield according to claim 1 is characterized in that: described outer metal forming screen is two-sided foil shielding layer or single face foil shielding layer.