CN201017724Y - Double core ultramicro co-axial cable - Google Patents

Abstract

The utility model discloses a double core ultramicro coaxial cable. The key is that a plurality of high strength silver-plating or tin-plating stranded copper wires with a total diameter less than 0.09 mm is taken as a conductor (1), a multi-bunching wire structure with a small external diameter and a short pitch is adopted, an insulating layer (2) adopts fluoroplastic material, a shielding layer adopts a silver-plating or tin-plating alloy wire (3) and a special type of metal foil wrapping double layer structure, the total diameter of a single wire cable behind an outer insulaiton layer is less than 0.34 mm, in this way, two ultramicro coaxial cables are combined in parallel and then an outer sheath is added to form a flat shape double core ultramicro coaxial cable. In this way, the ultramicro coaxial cable has the extremely thin external diameter, the good plasticity and flexibility, and superior transmission performance and interference free performance, and the range of the operating temperature is large, thus the utility model applies to small terminal equipments such as new generation cell phone, and laptop computer, etc.

Description

Twin-core ultra micro coaxial cable

Technical field

The utility model relates to the cable in electronics or the communication technical field, and finger is used for the twin-core ultra micro coaxial cable between the terminal applies device interior systems such as mobile phone of new generation, notebook computer especially.

Background technology

Development from electronic information technology, parallel conductor layout (Flat Cable) is to be applied to the information processing between the device interior systems such as computer, camera, printer, automobile audio, Winchester disk drive and the connecting line of exchange the earliest, but because of its overall volume excessive (thickness reaches 3mm), shortcoming such as soft, poor, the anti-electromagnetic interference of bending resistance folding endurance is weak inadequately, can difficultly adapt to the development trend that the electric terminal equipment volume is more and more littler, performance requirement is more and more higher.Based on new development trend, nineteen sixty, V Dahlgreen has invented early stage soft board, and its inventive principle is: attach metal forming circuit figure on thermoplastic film.Early stage soft board is compared with parallel conductor layout, at aspects such as volume, flexibility, bending resistance folding endurance, anti-electromagnetic interference bigger improvement has been arranged all, early stage soft board is mainly used in the connection fields such as (need not to use connector) between small-sized thin type e-machine structure dress, hardboard.People improve soft board again on this basis subsequently, form the printed circuit traces pattern on the flexible insulation plate, and (Flexible PCB FPC), and substitutes parallel conductor layout comprehensively the printed circuit soft board to have occurred.Phase at the end of the sixties in last century, PI (Polymide) is after base film is imported into use, soft board obtains sustained and rapid development, that manufacturing technology more becomes is perfect, day by day promote in the application, application market as Japanese soft board almost relates to all consumption electronic products, and the U.S. then turns to civilian consumer field gradually by in the past military field.

In recent years, along with the information processing of electric terminal equipment built-in system and the development trend that exchange capacity is increasing, the equipment integral volume is littler, range of application is wider, the appearance of, of new generation mobile phone that can arbitrarily angled bending big, frivolous notebook computer, accurate Medical Devices as data handling capacity, connecting line to built-in system is had higher requirement, many device fabrications of while manufacturer more pays attention to cost consideration, and existing soft board is difficult to satisfy this growth requirement, so people begin to seek the higher connecting line of cost performance.But at mobile phone, notebook computer, in the terminal applies equipment of accurate Medical Instruments, because the device space is narrow and small, it is very little to require this product to take up space, and cable is outer superfine through requiring.Some built-in system need often reverse, and needs cable that good flexibility and bending property are arranged.In addition, the processing speed of its internal information and transmission quality requirements height in high-end devices require it that good transmission performance is arranged.It is many that terminal equipment inside mostly is its signal interference of electronic equipment greatly, to the very high requirement of anti-interference proposition of cable.Terminal equipment uses under varying environment, and simultaneously various internal electronic equipment heatings require its anti-operating temperature range big.And the external diameter of existing common coaxial cable all 〉=0.8mm, and flexibility, resistance to bend(ing) and environmental resistance are all relatively poor and can not be as the connection cable in the high-end small electronic equipment.

Summary of the invention

The utility model provides a kind of twin-core ultra micro coaxial cable, and the total external diameter of existing coaxial cable is bigger than normal to solve, flexibility and resistance to bend(ing) are all relatively poor and can not be used for the problem of the connection cable between the terminal applies device interior systems such as mobile phone of new generation, notebook computer, LCD, accurate Medical Instruments.

The utility model is achieved in that with overall diameter less than the conductor of the silver-plated or zinc-plated many stranded copper wires of 0.09 millimeter high strength as unit cable, and adopt many synnema structures of little external diameter fine pith, and insulating barrier adopts fluoroplastics, screen adopts silver-plated or zinc-plated alloy silk and the wrapped double-decker of specialty metal paper tinsel, the overall diameter that adds its single cable behind the external insulation layer is added two parallel combinations of ultra micro coaxial cable that constitute like this oversheath and has been formed a kind of flat twin-core ultra micro cable less than 0.34 millimeter.This kind cable has superfine external diameter, and (length and width of its cross section is of a size of 0.72 * 0.35mm), good flexibility and bending property, good transmission performance and interference free performance, and operating temperature range is big.In addition, from the cost angle, the production cost of arranging with the line of twin-core ultra micro coaxial cable formation is more cheap more than 16% than soft board.From technical standpoint, twin-core ultra micro coaxial wire row is because of advantages such as its transmission capacity are stablized greatly, flexibility is good, strong, the anti-electromagnetic interference of bending resistance folding endurance is strong, operating temperature range is big, on technical performance, surmount soft board greatly, thereby will be more and more universal in the application of terminal equipments such as mobile phone of new generation, notebook computer, LCD, accurate Medical Instruments.

Description of drawings

Fig. 1 is a cross sectional representation of the present utility model.

Fig. 2 is an axial arrangement schematic diagram of the present utility model.

Embodiment

Less than the conductor 1 of silver-plated or zinc-plated 7～19 stranded copper wires of 0.09 millimeter high strength as unit cable, and adopt many synnema structures of little external diameter fine pith with overall diameter, its pitch is less than 3 millimeters.And insulating barrier 2 adopts the low PFA fluoroplastics material of dielectric constant, and the external diameter of insulating barrier 2 is less than 0.24 millimeter.Screen adopts silver-plated or zinc-plated alloy silk 3 oblique bags and aluminium foil or tinfoil paper 6 wrapped double-deckers, also has insulating barrier 5 between the silver-plated or zinc-plated alloy silk 3 of screen and aluminium foil or tinfoil paper 6.Silver-plated or zinc-plated alloy silk 3 adopts the oblique wrapped structure of horizontal scrolls, and the fluorine plastic film sintering use on its surface, alloy silk 3 and fluoroplastics are combined closely and forms an integral sealing layer 4.Single cable adds overall diameter behind the external insulation layer less than 0.34 millimeter, and two parallel combinations of ultra micro coaxial cable that constitute are like this added oversheath 7 and constituted a kind of flat twin-core ultra micro coaxial cable.Twin-core ultra micro coaxial cable is more saved the space than the combination of two single core coaxial cables (oversheath separately) under the situation that guarantees insulation property, to adapt to the requirement of the inner small spaces of electronic product such as mobile phone.Middle conductor adopts many synnema designs of little external diameter fine pith, and the oblique bag of silver-plated or zinc-plated alloy silk and aluminium foil or the wrapped double-decker of tinfoil paper are adopted in shielding, are for the softness that improves cable, anti-repeated bending performance and anti-electromagnetic interference.And adopt the silver-plated or zinc-plated stranded copper wire of high-quality high strength as conductor, high performance fluorine plastics as insulation and sheath, be to require and environment resistant for the transmission performance that guarantees cable, selecting for use based on its excellent oil resistant, heat resistance of fluoroplastics material makes cable can guarantee operate as normal in-50 ℃ to 250 ℃ scopes.

Claims (7)

1. twin-core ultra micro coaxial cable, it is characterized in that: with overall diameter less than the conductor (1) of the silver-plated or zinc-plated many stranded copper wires of 0.09 millimeter high strength as unit cable, and adopt many synnema structures of little external diameter fine pith, and insulating barrier (2) adopts the fluoroplastics material, screen adopts silver-plated or zinc-plated alloy silk (3) tiltedly to wrap and the wrapped double-decker of specialty metal paper tinsel (6), the overall diameter that adds its single cable behind the external insulation layer is less than 0.34 millimeter, oversheath added in two parallel combinations of ultra micro coaxial cable that constitute like this (7).

2. require described twin-core ultra micro coaxial cable according to right 1, the radical that it is characterized in that said stranded copper wire conductor (1) is 7～19.

3. require described twin-core ultra micro coaxial cable according to right 1, it is characterized in that the stranded copper wire conductor (1) of many synnema structures of said employing, its pitch is less than 3 millimeters.

4. require described twin-core ultra micro coaxial cable according to right 1, it is characterized in that said insulating barrier (2) is to adopt the low PFA fluoroplastics of dielectric constant.

5. require described twin-core ultra micro coaxial cable according to right 1, it is characterized in that the wrapped form of said silver-plated or zinc-plated alloy silk (3) adopts the oblique wrapped structure of horizontal scroll,

6. require described twin-core ultra micro coaxial cable according to right 1, it is characterized in that said screen also has the integral sealing layer (4) that forms with fluorine plastic film and silver-plated or zinc-plated alloy silk sintering.

7. require described twin-core ultra micro coaxial cable according to right 1, it is characterized in that said specialty metal paper tinsel (5) is a kind of aluminium foil or tinfoil paper.

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