CN207587418U

CN207587418U - Flat cable

Info

Publication number: CN207587418U
Application number: CN201721763839.6U
Authority: CN
Inventors: 张�杰; 李腾飞; 李扬
Original assignee: Bozhou Lanto Electronic Ltd
Current assignee: Bozhou Lanto Electronic Ltd
Priority date: 2017-12-16
Filing date: 2017-12-16
Publication date: 2018-07-06
Anticipated expiration: 2027-12-16

Abstract

The utility model is related to a kind of flat cables, it includes several to differential signal conductors, an at least earth conductor, insulated hull and coating, the insulated hull is wrapped in differential signal conductors and earth conductor outside, the coating is covered on the outside of insulated hull, the flat cable further includes the metallic conduction part in electrical contact with each earth conductor, the insulated hull is equipped with trepanning, the earth conductor is exposed in trepanning, at least part of the metallic conduction part is contained in trepanning and each earth conductor is in electrical contact, it is so designed that, each ground connection conductor by coating or metallic conduction part electrical series together, form common grounding path, improve earthing effect and signal shielding function.

Description

Flat cable

Technical field

The utility model is related to a kind of flat cables.

Background technology

Flat cable has many advantages, such as to occupy little space, can warpage, be widely used in carrying out signal biography in each electronic equipment Defeated, conventional flat cable includes the spaced several conductors in left and right, the insulating trip for being wrapped in conductor upper and lower surface and covering Conductive shielding layer on the outside of insulated hull, however in signals transmission, it is flat especially during high frequency signal transmission Cable is easily interfered by external electromagnetic signal, thus need to often improve the structure inside flat cable.

Utility model content

The purpose of this utility model is to provide a kind of flat wires for having the function of to improve earthing effect and signal shielding Cable.

To realize foregoing purpose, the utility model adopts the following technical solution：A kind of flat cable, including several to difference Sub-signal conductor, at least an earth conductor, insulated hull and coating, the insulated hull are wrapped in differential signal conductors and are led with ground connection External side, the coating are covered on the outside of insulated hull, and the flat cable further includes the gold in electrical contact with each earth conductor Belong to conduct piece, the insulated hull is equipped with trepanning, and the earth conductor is exposed in trepanning, at least one of the metallic conduction part It point is contained in trepanning and each earth conductor is in electrical contact.

Each earth conductor of the utility model flat cable together, is formed by metallic conduction part or coating electrical series Common grounding path, is conducive to improve the earthing effect of flat cable, while improves signal shielding function, promotes high-frequency signal Transmission quality.

Description of the drawings

Fig. 1 is the schematic cross-section of the utility model flat cable.

Fig. 2 is the schematic cross-section of the utility model flat cable, does not show conductive shielding layer and sheet metal.

Fig. 3 is the schematic cross-section of another embodiment of the utility model flat cable.

Specific embodiment

Please refer to Fig.1 to shown in Fig. 2, the utility model flat cable 100 include it is several to differential signal conductors 11, be located at Earth conductor 12 between adjacent every two pairs of differential signal conductors 11 is wrapped in differential signal conductors 11 and 12 outside of earth conductor Insulated hull 20, be covered in the coating 30 in the outside of insulated hull 20 and the sheet metal 40 with 12 connection in electrical contact of earth conductor.

Insulated hull 20 is provided with trepanning 21 at 12 position of earth conductor, and earth conductor 12 is exposed in trepanning 21.

Coating 30 is set as conductive shielding layer or insulating layer, when 30 conductive shielding layer times of coating, coating 30 There is the combined type shielded layer of conductive material using copper foil, aluminium foil, conductive fabric or interlayer.

At least part of sheet metal 40 is located in trepanning 21, is soldered or welded on each earth conductor 12, works as sheet metal 40 are an integral structure, then by each 12 electrical series of earth conductor together, form common grounding path, be so designed that, have Conducive to the earthing effect for strengthening flat cable 100, in the case of indivedual earth conductors 12 are grounded less stable, earthing effect It is unaffected.

When coating 30 is conductive shielding layer, sheet metal 40 can be integral type or split type, 40 lateral surface of sheet metal In electrical contact with coating 30, each 12 electrical series of earth conductor together, can equally be formed common connect by coating 30 Ground path promotes each earth conductor 12 to form common earth-return circuit with coating 30, and coating 30 can be by flat cable 100 Noise using ground connection export, improve flat cable 100 signal shielding function, be conducive to promoted high frequency signal transmission quality.

The manufacturing method of the utility model flat cable 10, includes the following steps：

Differential signal conductors 11, earth conductor 12 and insulated hull 20, insulated hull 20 are provided and are wrapped in differential signal conductors 11 With 12 outside of earth conductor；

It removes SI semi-insulation skin 20 and forms trepanning 21, make each earth conductor 12 exposed in trepanning 21, the mode of removal has The modes such as radium-shine, punching, the punching of epithelium former material；

Sheet metal 40 is provided, sheet metal 40 is soldered or welded on above-mentioned exposed earth conductor 12, and welding manner uses Add tin welding or laser welding etc.；

Finally, coating is provided, coating is conductive shielding layer or insulating layer, the packet of coating 30 be covered in insulated hull 20 with 40 outside of sheet metal, the manufacture of flat cable 100 are completed.

The flat cable 200 of another embodiment of the utility model shown in Fig. 3 is please referred to, it is flat with the above embodiment The main distinction of cable 100 is：Using 50 substituted metal piece 40 of silver paste or tin cream, solidification is brushed or toasted to silver paste or tin cream 50 In on earth conductor 12, coating 30 is covered in 50 outside of silver paste or tin cream, each earth conductor 12 by silver paste or tin cream 50 or 30 electrical series of coating together, form common grounding path, can also equally realize the purpose of this utility model.

Described in summary, the sheet metal 40 of the utility model and silver paste, tin cream 50 can be upper for metallic conduction part, and metal is led Electric part 40,50 and 12 connection in electrical contact of earth conductor are led each ground connection using metallic conduction part 40,50 itself or coating 30 The electrical series of body 12 together, form common grounding path, are conducive to improve flat wire 100,200 earthing effects, when covering When cap rock 30 is conductive shielding layer, coating 30 also is able to export the noise of flat cable 100 using ground connection, improves flat wire The signal shielding function of cable 100 is conducive to promote high frequency signal transmission quality.

Although for example purpose, the preferred embodiment of the utility model, the common skill of this field are had been disclosed for Art personnel will realize the situation of the scope of the utility model and spirit disclosed in not departing from by appended claims Under, various improvements, additions and substitutions are possible.

Claims

1. a kind of flat cable, including it is several to differential signal conductors, at least an earth conductor, insulated hull and coating, institute It states insulated hull and is wrapped in differential signal conductors and earth conductor outside, the coating is covered on the outside of insulated hull, and feature exists In：The flat cable further includes the metallic conduction part in electrical contact with each earth conductor, and the insulated hull is equipped with trepanning, described Earth conductor is exposed in trepanning, and at least part of the metallic conduction part is contained in trepanning and is electrically connected with each earth conductor It touches.

2. flat cable according to claim 1, it is characterised in that：The metallic conduction part is sheet metal, silver paste or tin Cream.

3. flat cable according to claim 2, it is characterised in that：The metallic conduction part welding, welding, brushing or baking It is roasting to freeze solidly on earth conductor.

4. flat cable according to claim 2, it is characterised in that：The metallic conduction part is an integral structure or split Formula structure.

5. flat cable according to claim 2, it is characterised in that：The coating is insulating layer or conductive shielding layer.

6. flat cable according to claim 5, it is characterised in that：The conductive shielding layer is copper foil, aluminium foil, conductive fabric Or interlayer contains the combined type shielding material of conductive material.