CN205487457U - Compound shielding formula stereo set cable - Google Patents

Abstract

The utility model provides a compound shielding formula stereo set cable, it includes composite shielding layer and sets up in composite shielding layer several insulation core, stoppings that comprise composite conductor and insulating layer and set up the restrictive coating outside composite shielding layer, composite shielding layer includes insulation screen, several anti dry drain wire, band and wire braid, the quantity of anti dry drain wire sets up according to insulation core's quantity, thereby the compound shielding structure of its adoption overcomes the current big sum signal of stereo set line transmission attenuation mixes the scheduling problem to overall structure scientific and reasonable, the simple installation can guarantee that cable every inside conductor can not the mutual interference between respective signal when the transmission heavy current, and outside electromagnetic interference signal is kept apart outside the cable, it extensively is applicable to, and the sound equipment of family is supporting to be used.

Description

A kind of composite shielding sound equipment cable

Technical field

This utility model relates to a kind of composite shielding sound equipment cable.

Background technology

At present, market occurs that the common sound wire that family commonly uses exists following situation: 1. mill run uses several identical rule The hypoxia bare copper stranded wire of lattice diameter monofilament is as conductor, thus structure is single, and the decay making transmission is big, and signal mixes, high, In, the low mixture of tones can not differentiate；2. mill run uses common polrvinyl chloride as insulant, makes the characteristic impedance can not Coupling, thus cause the decay of transmission greatly, audio distortions；3. the unshielded structure of mill run or shielding construction are single, cause Signal interferes, and easily produces noise；4. mill run shell-less, fragile insulating barrier and conductor in installing and using Core.

Summary of the invention

For above-mentioned situation, this utility model purpose is to provide a kind of composite shielding sound equipment cable, and it uses composite shielding Structure thus overcome existing sound wire transmission attenuation big and signal such as mixes at the problem；And overall structure is scientific and reasonable, letter is installed Just, can guarantee that every conductor of cable inner will not interfere with each other between respective signal when transmitting big electric current, and outside Electromagnetic interference signal is isolated in outside cable, the effective guarantee satisfaction of big current signal transfer.

For realizing above-mentioned task, a kind of composite shielding sound equipment cable, it includes composite shielding layer and is arranged at composite shielding Several insulated wire cores, inserts and restrictive coatings of being arranged at outside composite shielding layer being made up of composite conductor and insulating barrier in layer； Described composite shielding layer includes that insulation screen, several anti-dry drain wire, band and wire braid, described anti-dry row are disturbed The quantity of line is arranged according to the quantity of insulated wire cores.

For realizing this utility model structure, effect optimization, its further step: described insulation screen is conduction polychlorostyrene second Alkene extrudes and forms outside the insulating barrier of every insulated wire cores, and the average thickness of this insulation screen is 0.05～0.30mm, with one heart Degree is not less than 80%.

Described insulated wire cores is 2～8, and described anti-dry drain wire is 1～3, and described anti-dry drain wire and insulated wire cores Twisted synthesizing cable be close to the insulation screen of insulated wire cores together.

Coupling one anti-dry drain wire together twisted synthesizing cable when described insulated wire cores arranges 2～3, when insulated wire cores arrange 4～ Two anti-dry drain wire together twisted synthesizing cables are mated, the coupling three anti-dry drain wire when insulated wire cores arranges 7～8 when 6 Together twisted synthesizing cable.

Described insulating barrier is extruded on outer contact is formed by the relatively low solid polyethylene of dielectric constant or polyethylene foamed, and this is exhausted The thickness of edge layer is 0.3～0.7mm.

Described every anti-dry drain wire is by naked annealed copper wire or the tinned wird strand that 7～19 strands of filament diameters are 0.10～0.30mm Conjunction forms.

Described band is that metal covering outwardly and is formed and lap-joint's weight by the aluminium-plastic tape spiral of thickness 0.025～0.10mm is wrapped Folded rate is not less than 20%；It is outer by the naked annealed copper wire of diameter 0.10～0.25mm that described wire braid is arranged at aluminium-plastic tape Or the braiding of tin plating soft circular copper wire forms, and count is not less than 85%.

The nominal thickness of described restrictive coating is not less than 1.0mm, and sheath maximum outside diameter is not more than 20mm；This restrictive coating is by fire-retardant ring Guarantor's type polrvinyl chloride, low smoke halogen-free flame-retardant polyolefin, low-smoke non-halogen flame-retardant cross-linked polyolefin, thermoplastic elastomer (TPE), thermoplasticity Rubber, TPV or thermoplastic polyurethane extrude and form outside wire braid.

This utility model provides a kind of composite shielding sound equipment cable, and it includes composite shielding layer and is arranged at composite shielding layer In several insulated wire cores, inserts and restrictive coatings of being arranged at outside composite shielding layer being made up of composite conductor and insulating barrier；Institute State composite shielding layer and include insulation screen, several anti-dry drain wire, band and wire braid, described anti-dry drain wire Quantity according to insulated wire cores quantity arrange；It uses composite barrier structure thus overcome existing sound wire transmission attenuation big and The problems such as signal mixes, and overall structure is scientific and reasonable, simple installation, can guarantee that every conductor of cable inner is in transmission Will not interfere with each other between respective signal during big electric current, and the electromagnetic interference signal of outside is isolated in outside cable, effectively protects Hinder the satisfaction of big current signal transfer, there is significant economic benefit and social benefit, wide market, it is simple to push away Wide use.

This utility model produced beneficial effect compared to existing technology:

I, this utility model uses the naked annealed copper wire of high-purity anaerobic as conductor, and transmission attenuation is little, and loss of signal is little, data Transmission is fast, can deduce the genuineness of sound, natural reality, more presence；

II, this utility model uses composite conductor structure, and peripheral conductors is uniformly distributed spiral surrounding around center conductor, makes Low frequency separates with high frequency signal, accomplishes that high, normal, basic sound is well arranged, and bass shakes, middle pitch is pure, high pitch is plentiful, tonequality Penetrating the most undistorted, show top seeing and hearing enjoyment fully；

III, this utility model uses the low solid polyethylene of dielectric constant or polyethylene foamed as insulating barrier, makes the resistance of conductor Resist and can ensure that tonequality is penetrating the most undistorted with the impedance matching of Music centre loudspeaker and resistance value≤16 Ω, and electrical insulation capability Excellence, insulation resistance >=500M Ω km when 20 DEG C；

IV, this utility model use composite barrier structure, both can guarantee that transmit big electric current time signal between without interference with, again Can guarantee that the electromagnetic interference signal of outside is isolated in outside cable, it is achieved that the satisfaction of big current signal transfer；

V, this utility model uses the crosslinking of anti-flaming environment-friendly polrvinyl chloride, low smoke halogen-free flame-retardant polyolefin, low-smoke non-halogen flame-retardant Polyolefin, thermoplastic elastomer (TPE), thermoplastic elastomer, TPV or thermoplastic polyurethane are as sheath material, both Insulating barrier, conductor and screen layer can be protected in installing and using, product appearance can be made again to show air and your gas, outward appearance essence fully Beautiful；

VI, sheath of the present utility model uses environmental protection flame retardant antioxidative material, has good high-low temperature resistant, wear-resisting, resistance to The features such as solvent, oil resistant, fire-retardant, aging resistance, improve service life；

VII, this utility model resists the outer rim of dry drain wire to be all close to the insulation screen of every insulated wire cores, in can guarantee that cable The every insulated wire cores in portion respective signal when transmitting big electric current will not interfere with each other, and anti-dry drain wire can be by covered wire What core produced magnetic field when transmitting big electric current converted disturbs the leakage current of electric current and insulated wire cores itself from insulation screen On introduce underground by ground connection, thus resistance to voltage is good, proof voltage: AC 800V/1min does not punctures, and ensures and uses safety.

This utility model is widely used in home audio coordinative composition of equipments and uses.

Below with reference to figure, this utility model is described in further detail.

Accompanying drawing explanation

Fig. 1 is overall structure sectional view of the present utility model.

Fig. 2 is the sectional view of insulated wire cores in this utility model.

In figure: 1-restrictive coating, 2-braid, 3-band, 4-insulated wire cores, 41-composite conductor, 411-center conductor, 412-outer contact, 42-insulating barrier, 43-insulation screen, 5-inserts, 6-resists dry drain wire.

Detailed description of the invention

With reference to accompanying drawing, this utility model is achieved in that a kind of composite shielding sound equipment cable, and it includes composite shielding layer And several insulated wire cores 4, non-hygroscopics being made up of composite guide 41 body and insulating barrier 42 are filled out in being arranged at composite shielding layer Charge 5 and the restrictive coating 1 being arranged at outside composite shielding layer；Described composite conductor 41 includes center conductor 411 and leads around center The outer contact 412 that body 411 is stranded, described composite shielding layer includes insulation screen 43, anti-dry drain wire 6, band 3 With wire braid 2.

As it is shown in figure 1, anti-interference winding displacement 6 of the present utility model by 7～19 filament diameters be 0.10～0.30mm naked Annealed copper strand wire or tin-coated copper twisted wire concentric stranding form, and this resists the outer rim of dry drain wire 6 to be close to the insulation shielding of insulated wire cores 4 Layer 43, typically can ensure every insulated wire cores by the centre that anti-dry drain wire 6 is arranged at all insulated wire cores 4 in actual production The insulation screen 43 of 4 all can contact with the outer rim of anti-interference winding displacement 6, and this structure can ensure that insulated wire cores 4 is at the big electricity of transmission Will not interfere with each other between respective signal during stream, and anti-dry drain wire 6 can be by composite conductor 41 when transmitting big electric current The leakage current of the interference electric current producing magnetic field and convert and composite conductor 41 itself passes through grounding lead from insulation screen 43 Enter underground, ensure and use safety；Described band 3 is one layer 0.025～0.10mm thick aluminium-plastic tape, and this composite band Metal covering arrange outwardly and contact with wire braid 2, described aluminium-plastic tape uses spiral winding packet mode and clinch The Duplication divided is not less than 20%；Described wire braid 2 by a diameter of 0.10～0.25mm naked annealed copper wire or tin plating soft Circular copper wire braiding forms, and count is not less than 85%；This cable uses two-layer compound shielding construction, has both ensured in transmission Will not interfere between signal during big electric current, can guarantee that again the high and low frequency electromagnetic interference signal of external environment condition passes through plastic-aluminum Composite band and the double layer screen of wire braid 2 and be isolated in outside insulated wire cores 4, will not be to cable inner composite conductor 41 Signal disturb, it is ensured that the satisfaction of big current signal transfer；Due to anti-dry drain wire 6 external diameter is smaller and with absolutely The insulation screen 43 of edge core 4 contacts, and screen layer 43 external diameter of insulated wire cores 4 is bigger, so at 2～8 There is space in the surrounding of insulated wire cores 4, and arranges non-absorbent material in gap as inserts 5, and main purpose is to make Cable outward appearance rounding, and will not the moisture absorption, it is possible to increase the insulating properties of cable；Described restrictive coating 1 is by one layer of flame-proof environmental protection Type polrvinyl chloride, low smoke halogen-free flame-retardant polyolefin, low-smoke non-halogen flame-retardant cross-linked polyolefin, thermoplastic elastomer (TPE), thermoplasticity rubber Glue, TPV or thermoplastic polyurethane are arranged at outside braid 2 to extrude and form, and the thickness of this restrictive coating 1 is the least In 1.0mm, and the maximum outside diameter of restrictive coating 1 is not more than 20mm；This structure can install and use in protect insulating barrier 42, Composite conductor 41 and insulation screen 43, can make again product appearance exquisite, shows air and your gas fully, and oversheath uses Environmental protection flame retardant antioxidative material, has the spies such as good high-low temperature resistant, wear-resisting, solvent resistant, oil resistant, fire-retardant, aging resistance Point, thus increase the service life.

As in figure 2 it is shown, the composite conductor 41, absolutely that every insulated wire cores 4 of the present utility model includes setting gradually from the inside to the outside Edge layer 42 and insulation screen 43, described composite conductor 41 by 3～12 strands of equally distributed outer contacts 412 around 1 strand Center conductor 411 concentric stranding forms, the center conductor 411 of this composite conductor 41 by 37 filament diameters be 0.18～ The high-purity anaerobic axial concentric stranding of naked annealed copper wire of 0.25mm forms, the per share outer contact 412 of this composite conductor 41 by 37 filament diameters be 0.08～0.15mm the high-purity anaerobic axial concentric stranding of naked annealed copper wire form；Use high-purity without The naked soft copper of oxygen as composite conductor 41, make that transmission attenuation is little, loss of signal is little, data transmission fast, and whole composite conductor 41 use inside and outside stranded composite construction, low frequency can be made to separate with high frequency signal, thus it is well arranged to realize high, normal, basic sound, Bass shock, middle pitch is pure, high pitch is plentiful, tonequality penetrating from however undistorted, the genuineness of sound can be deduced, more Tool presence, shows top seeing and hearing enjoyment fully；Described insulating barrier 42 uses the solid polyethylene or the poly-second that foams that dielectric constant is low Alkene is extruded in composite conductor 41 outer rim and forms, and the thickness of this insulating barrier 42 is 0.3～0.7mm；This structure can make insulated wire cores The impedance of 4 can be with the impedance matching of Music centre loudspeaker and stable performance, and resistance value≤16 Ω can ensure that tonequality is penetrating the most not Distortion；And electrical insulation capability is excellent, and insulation resistance >=500M Ω km when 20 DEG C, resistance to voltage is good, proof voltage: AC 800V/1min does not punctures, and ensures and uses safety；Described insulation screen 43 uses one layer of conductive polyvinyl chloride to extrude in insulation Forming outside layer 42, the thickness of this insulation screen 43 is 0.05～0.30mm and concentricity is not less than 80%.

In conjunction with accompanying drawing, restrictive coating 1 that this utility model includes setting gradually from outside to inside, wire braid 2, band 3, And two to eight insulated wire cores 4 of being arranged in band 3 and one to three anti-dry drain wire 6；Described anti-dry drain wire 6 Quantity mate according to the quantity situation of insulated wire cores 4, when cable arranges two or three insulated wire cores 4, only need Can ensure that the outer rim of anti-interference winding displacement 6 can be tight at the centrally disposed anti-dry drain wire 6 that all insulated wire cores 4 surround Paste the insulation screen 43 of every insulated wire cores 4；When the quantity that cable arranges insulated wire cores is four to the six roots of sensation, then need phase The two anti-interference winding displacements 6 that arrange answered all can be with anti-interference winding displacement 6 to the insulation screen 43 ensureing every insulated wire cores 4 Outer rim contact；When the quantity that cable arranges insulated wire cores is seven to eight, then need to arrange three anti-interference rows accordingly Line 6 ensures that the screen layer 43 of every insulated wire cores 4 all can contact with the outer rim of anti-interference winding displacement 6, to ensure covered wire Core 4 will not interfere with each other between respective signal when transmitting big electric current, and anti-dry drain wire 6 can be by composite conductor 41 The leakage current of the interference electric current producing magnetic field when transmitting big electric current and convert and composite conductor 41 itself is from insulation screen Introduce underground by ground connection on 43, ensure and use safety.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this area Technical staff for, this utility model can have various modifications and variations；It is all within spirit of the present utility model and principle, Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims (8)

1. a composite shielding sound equipment cable, it is characterised in that include composite shielding layer and be arranged in composite shielding layer Several insulated wire cores, inserts and restrictive coatings of being arranged at outside composite shielding layer being made up of composite conductor and insulating barrier；Described Composite shielding layer includes insulation screen, several anti-dry drain wire, band and wire braid, described anti-dry drain wire Quantity is arranged according to the quantity of insulated wire cores.

A kind of composite shielding sound equipment cable the most according to claim 1, it is characterised in that described insulation screen is Conductive polyvinyl chloride extrudes and forms outside the insulating barrier of every insulated wire cores, the average thickness of this insulation screen be 0.05～ 0.30mm, concentricity is not less than 80%.

A kind of composite shielding sound equipment cable the most according to claim 1, it is characterised in that described insulated wire cores be 2～ 8, described anti-dry drain wire is 1～3, and described anti-dry drain wire twisted synthesizing cable be close to insulation together with insulated wire cores The insulation screen of core.

A kind of composite shielding sound equipment cable the most according to claim 3, it is characterised in that described insulated wire cores is arranged An anti-dry drain wire together twisted synthesizing cable is mated, the coupling two anti-dry row when insulated wire cores arranges 4～6 when 2～3 Disturb line together twisted synthesizing cable, the anti-dry drain wire together twisted synthesizing cable of coupling three when insulated wire cores arranges 7～8.

A kind of composite shielding sound equipment cable the most according to claim 1, it is characterised in that described insulating barrier is by dielectric Solid polyethylene or polyethylene foamed that constant is relatively low are extruded on outer contact formation, the thickness of this insulating barrier be 0.3～ 0.7mm。

A kind of composite shielding sound equipment cable the most according to claim 3, it is characterised in that described every anti-dry row disturbs Line is the naked annealed copper wire of 0.10～0.30mm or tinned wird is stranded forms by 7～19 strands of filament diameters.

A kind of composite shielding sound equipment cable the most according to claim 1, it is characterised in that described band is metal covering Wrapped form and lap-joint's Duplication is not less than 20% outwardly and by the aluminium-plastic tape spiral of thick 0.025～0.10mm；Described Wire braid is arranged at outside aluminium-plastic tape the naked annealed copper wire by diameter 0.10～0.25mm or the braiding of tin plating soft circular copper wire Form, and count is not less than 85%.

A kind of composite shielding sound equipment cable the most according to claim 1, it is characterised in that the nominal of described restrictive coating Thickness is not less than 1.0mm, and sheath maximum outside diameter is not more than 20mm；This restrictive coating by anti-flaming environment-friendly polrvinyl chloride, low cigarette without Halogen fire retardant polyolefin, low-smoke non-halogen flame-retardant cross-linked polyolefin, thermoplastic elastomer (TPE), thermoplastic elastomer, TPV Or thermoplastic polyurethane extrudes and forms outside wire braid.