CN101702339A - High-shielding audio and video information combined cable - Google Patents
High-shielding audio and video information combined cable Download PDFInfo
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- CN101702339A CN101702339A CN200910192076A CN200910192076A CN101702339A CN 101702339 A CN101702339 A CN 101702339A CN 200910192076 A CN200910192076 A CN 200910192076A CN 200910192076 A CN200910192076 A CN 200910192076A CN 101702339 A CN101702339 A CN 101702339A
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Abstract
The invention discloses a high-shielding audio and video information combined cable which aims to provide an audio and video information combined cable with favorable shielding effect, convenient line distribution, easy maintenance and low cost. The high-shielding audio and video information combined cable comprises a high-shielding video line (1) and a high-shielding audio network line (2), wherein the high-shielding video line (1) sequentially comprises an inner conductor (11), a foaming insulation layer (12), a shielding outer conductor (13) and a video line jacket (14) from inner part to outer part; the shielding outer conductor (13) is an aluminum plastic composite belt; the high-shielding audio network line (2) comprises a plurality of audio network twisted pair lines (21); the periphery of the audio network twisted pair lines (21) is provided with an audio line shielding layer (22); the periphery of the audio line shielding layer (22) is provided with an audio line jacket (23); a connecting belt (3) is arranged between the video line jacket (14) and the audio line jacket (23); and the video line jacket (14), the audio line jacket (23) and the connecting belt (3) are integrated into a whole. The invention is applied to the field of wired transmission network communication.
Description
Technical field
The present invention relates to a kind of cable, relate in particular to a kind of high-shielding audio and video information combined cable.
Background technology
The renewal progress of science and technology promotes society's fast development, and electronic information technology also presents swift and violent growth momentum.Development along with information industry, the transmission of various information, signal, data more and more presents the scene of numerous and complicated, in present stage, the cable transmission is the main mode of present various message transmission, cable is as the important carrier of message transmission, in order to guarantee the high-quality transmission of various information, also more and more higher to the requirement of cable; As everyone knows, information is by producing decay in the process of cable transmission, and can be subjected to the interference of outside other signals, therefore require transmission yarn to have function of shielding, to ensure the high-quality transmission of information, the outer conductor of cable is usually as screen, the performance shielding action, yet, existing transmission yarn is because technical defective, its shield effectiveness is unsatisfactory, be illustrated in figure 1 as existing coaxial cable, its outer conductor adds wire braid 132 by aluminum-plastic composite membrane 131 and forms, and there is the aluminium base thin thickness of the described aluminum-plastic composite membrane 131 of following defective: a in the shielding outer conductor of this structure when carrying out high-frequency transmission, generally have only 7～9 μ m, the wire diameter of described wire braid 132 generally has only 0.12mm, and count has only 42%, so shielding attenuation is little in high-frequency transmission, anti-outside electromagnetic interference ability is low, easily cause the unintelligible of image or figure, bad phenomenon such as audio distortions produce.B has weakened the high-frequency transmission signal, has influenced signal transmission quality and transmission range because its shielding attenuation Xiao Yi leaks high frequency signals transmitted.C adopt this kind shielding outer conductor because of aluminum-plastic composite membrane 131 aluminium base thin, wire braid 132 diameters are little and have contact resistance each other, so total D.C. resistance height, loop resistance is big, number attenuation constant of high-frequency transmission is big, influences transmission range.D influences the use of widening of frequency band because the decay of this kind shielding outer conductor structual shield is little.
Existing audio network cable as shown in Figure 2, the VON voice network winding thread adopts twisted pair wire, because of the pair twist group lay of twisted pair wire can not be very little, so the interference of electromagnetic field can not reach higher shield effectiveness to external world, and each pitch of the pair twist group of VON voice network winding thread is because of the constraint of its production equipment, self structure, inaccessible its nominal value, promptly the deviation of each pitch can be limited in the scope basically, so the interference of electromagnetic field can't reach comparatively desirable shield effectiveness to external world; In addition, network can be because of exceeding the area requirement of pitch variation with the pitch of each pair twist group of VON voice network winding thread at condition lower part laies such as production, construction, mechanical collisions, causes the super deviation of pitch and have a strong impact on shield effectiveness.Network all can exert an influence to transmission performances with the inner wire of the single line in each pair twist group of VON voice network winding thread, the deviation of insulator, and the big more influence of deviation is also big more.When producing external interference, also can produce leaking of transmission signals, cause the increase of signal attenuation, influence the high-frequency signal transmission quality.
On the other hand, existing various transmission yarn is that function singleness, structure are single, the transmission yarn of separate separation, therefore, existing various transmission yarns can not be unified wiring in actual applications, and various message transmission cables just seem intricate in wiring, be difficult to identification, be unfavorable for management, safeguard and maintenance, and when producing cable, can not effectively optimize its production technology and shortened process, therefore, its production cost is higher.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, the audio and video information combined cable that provide that a kind of shield effectiveness is good, wiring is convenient, be easy to safeguard, cost is low.
The technical solution adopted in the present invention is: the present invention includes high mute video line, high shielding VON voice network winding thread, described high mute video line is a coaxial wire, described high mute video line comprises inner wire, foaming insulation layer, the shielding outer conductor, the video line sheath, described inner wire is arranged at the inside of described foaming insulation layer, described shielding outer conductor is arranged on the periphery of described foaming insulation layer, described video line sheath is wrapped in the periphery of described shielding outer conductor, described shielding outer conductor is an aluminium-plastic tape, described high shielding VON voice network winding thread comprises some audio network twisted pair wires, the outer periphery of described audio network twisted pair wire is equipped with the tone frequency channel wire screen, described tone frequency channel wire screen outer periphery is equipped with the tone frequency channel wire sheath, be provided with between described video line sheath and the described tone frequency channel wire sheath related, described video line sheath, described tone frequency channel wire sheath, described related be an integral body.
Described shielding outer conductor, described tone frequency channel wire screen all adopt aluminium-plastic tape, described aluminium-plastic tape is made up of aluminium base and plastic layer, described inwardly aluminium base, described plastic layer outwardly, described aluminium base thickness is more than or equal to 0.15mm, described plastic layer adopts the modified plastics of low temperature self-adhesion, and the thickness of described plastic layer is more than or equal to 0.05mm.
Described high shielding VON voice network winding thread adopts the communication twisted pair wire, described high shielding VON voice network winding thread comprises 4 groups of audio network twisted pair wires, described 4 groups of audio network cable twisted pair wires are wrapped in the inside of described tone frequency channel wire screen, described audio network twisted pair wire comprises conductor, and described conductor periphery is enclosed with polyethylene layer.
Described high shielding VON voice network winding thread also comprises tears rope, describedly tears the inside that rope and described audio network cable twisted pair wire together are wrapped in described tone frequency channel wire screen.
Be provided with the shielding connecting line between described foaming insulation layer and described shielding outer conductor aluminium base, aluminium base tight contact of described shielding connecting line and described shielding outer conductor; Be provided with the shielding connecting line between described audio network cable twisted pair wire and described tone frequency channel wire screen aluminium base, aluminium base tight contact of described shielding connecting line and described tone frequency channel wire screen.
Described video line sheath, described tone frequency channel wire sheath, described related employing polyvinyl chloride or the polyvinyl chloride cable jacket material of deriving.
The invention has the beneficial effects as follows: among the present invention, described shielding outer conductor is an aluminium-plastic tape, shielding properties is good, its shielding attenuation is greater than 95dB, when described inner wire is 18AWG, its 1000MHz pad value is less than or equal to 21dB/100m, and existing common like product pad value is less than or equal to 22.97dB/100m.
In the described high shielding VON voice network winding thread of the present invention, the outer periphery of described audio network twisted pair wire is equipped with the tone frequency channel wire screen, thereby improved the shielding properties of high shielding VON voice network winding thread greatly, make the signal data transmission time reach that tonequality is good, fidelity degree height, and high-frequency transmission excellent performance, image fidelity, information symbol are clear, the high-quality transmission effect of sound high-fidelity.
Among the present invention, be provided with related between described video line sheath and the described tone frequency channel wire sheath, described video line sheath, described tone frequency channel wire sheath, described related be an integral body, realize multiple transmission of Information such as audio-frequency information and video information and data message etc. thus, make the functional diversities of cable; And can unify wiring, more convenient wiring operations and to the maintenance, repair of cable; Described video line sheath, described tone frequency channel wire sheath, described related be an integral body, therefore, when producing, can be combined into one procedure, adopt particular manufacturing craft to finish in common sheath extruder production, thereby effectively optimized the production technology of product, shorten the technological process of production, reach the purpose that reduces production costs.
Description of drawings
Fig. 1 is existing video line structural representation;
Fig. 2 is existing audio network line structure schematic diagram;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is a structural representation of the present invention;
Fig. 5 is the A-A cutaway view of Fig. 4 of the present invention;
Fig. 6 is an audio network twisted pair wire cutaway view of the present invention.
Embodiment
As Fig. 4, Fig. 5, shown in Figure 6, the present invention includes high mute video line 1, high shielding VON voice network winding thread 2, described high mute video line 1, high shielding VON voice network winding thread 2 does not produce interference mutually when working, described high mute video line 1 is a coaxial wire, described high mute video line 1 comprises inner wire 11, foaming insulation layer 12, shielding outer conductor 13, video line sheath 14, described inner wire 11 is arranged at the inside of described foaming insulation layer 12, described shielding outer conductor 13 is arranged on the periphery of described foaming insulation layer 12, described video line sheath 14 is wrapped in the periphery of described shielding outer conductor 13, described shielding outer conductor 13 is an aluminium-plastic tape, described high shielding VON voice network winding thread 2 comprises some audio network twisted pair wires 21, the outer periphery of described audio network twisted pair wire 21 is equipped with tone frequency channel wire screen 22, described tone frequency channel wire screen 22 outer periphery are equipped with tone frequency channel wire sheath 23, be provided with related 3 between described video line sheath 14 and the described tone frequency channel wire sheath 23, described video line sheath 14, described tone frequency channel wire sheath 23, described related 3 is an integral body, unify wiring, make wiring simple, neatly.
Described shielding outer conductor 13, described tone frequency channel wire screen 22 all adopt aluminium-plastic tape, described aluminium-plastic tape is made up of aluminium base and plastic layer, described inwardly aluminium base, described plastic layer outwardly, described aluminium base thickness is more than or equal to 0.15mm, described plastic layer adopts the modified plastics of low temperature self-adhesion, and the thickness of described plastic layer is more than or equal to 0.05mm.
In the production process, the aluminum plastic composite belt longitudinal that described shielding outer conductor 13 adopts aluminium base thickness to be not less than 0.15mm wraps on the described foaming insulation layer 12, and it puts up overlapping 20% of the bandwidth that is not less than; The plastic layer of described aluminium-plastic tape adopts the modified plastics of low temperature self-adhesion, its thickness is not less than 0.05mm, when extruding described video line sheath 14, described plastic layer and described video line sheath 14 bondings, and self puts up lap and also bonds, guarantee the stability of structure in one-tenth dish or lopping or cable laying operation of described high mute video line 1, thereby guarantee the stability of its shielding properties; Aluminum plastic composite belt longitudinal bag and put up overlapping 20% of the bandwidth that is not less than, can guarantee good bond effect and guarantee good shield effectiveness, the aluminium base thickness of described aluminium-plastic tape is not less than 0.15mm, also guaranteed high conduction low resistance performance, thereby increased the shielding attenuation value, reduce the decay of transmission signals, ensured transmission quality.
After adopting described structure, can make the shielding attenuation value bring up to 95dB; Thereby the pad value of signal transmission is reduced, and high as described mute video line 1 is the RG6 coaxial line, and then its transmission frequency is when 5MHz, and the decay in transmission course can be less than or be equaled 2.0dB/100m by the original 2.66dB/100m that is less than or equal to; During its transmission frequency 55MHz, then be less than or equal 4.8dB/100m by the original 5.25dB/100m that is less than or equal in the decay in when transmission; The bandwidth of video coaxial line reaches 3000MHz by original 1000MHz.
Described VON voice network winding thread 2 adopts the communication twisted pair wire, during production, after 4 groups of audio network cable twisted pair wires 21 of described high shielding VON voice network winding thread 2 are stranded, the described tone frequency channel wire screen 22 of its peripheral vertical bag, described tone frequency channel wire screen 22 adopts aluminium base thickness to be not less than the non-bound type Al plastic composite strip of 0.15mm, and the rate of putting up is not less than 30% of bandwidth, to guarantee the good shielding properties of product, be suitable for the stronger place of electromagnetic interference and lay, widen the scope of application of product.2 characteristic impedances of described high shielding VON voice network winding thread are 100 Ω, during maximum useful frequency 100MHz, its near-end crosstalk attenuation greater than 0.32dB/m, pad value less than 0.22dB/m; When its characteristic impedance is 100 Ω, when maximum useful frequency is 250MHz its near-end crosstalk attenuation value greater than 0.38dB/m, pad value less than 0.328dB/m; When its characteristic impedance is 150 Ω, during maximum useful frequency 300MHz, its near-end crosstalk attenuation value greater than 0.31dB/m, pad value less than 0.239dB/m.Because of described high shielding VON voice network winding thread 2 when the high-frequency transmission, excellent performance, image fidelity, clear, the audio communication high-fidelity of information symbol.During for transfer of data such as computer, printers, described high shielding VON voice network winding thread 2 adopts 5 class cables or surpasses 5 class cables (5e) or 6 class cables or 7 class cables, preferentially selects 6 class cables and 7 class cables for use, to guarantee transmission quality preferably.
Described high shielding VON voice network winding thread 2 also comprises tears rope 24, describedly tears the inside that rope 24 and described audio network cable twisted pair wire 21 together are wrapped in described tone frequency channel wire screen 22; Cable continues or during connecting terminal equipment, can utilize the described rope 24 torn that described tone frequency channel wire screen 22 and described tone frequency channel wire sheath 23 are torn, thereby makes things convenient for the carrying out of wiring work, the described rope 24 general nylon wires that adopt of tearing.
Described video line sheath 14, described tone frequency channel wire sheath 23, described related 3 adopt polyvinyl chloride or the polyvinyl chloride cable jacket material of deriving, described video line sheath 14, described tone frequency channel wire sheath 23, described related 3 processing only need to adopt particular manufacturing craft to produce and finish as last procedure on common sheath extruder.
Be provided with shielding connecting line 15 between described foaming insulation layer 12 and described shielding outer conductor 13 aluminium base, aluminium base tight contact of described shielding connecting line 15 and described shielding outer conductor 13; Be provided with shielding connecting line 25 between described audio network cable twisted pair wire 21 and described tone frequency channel wire screen 22 aluminium base, aluminium base tight contact of described shielding connecting line 25 and described tone frequency channel wire screen 22.Described shielding connecting line 15,25 adopt tinned wird, when described shielding outer conductor 13 or the 22 generation fractures of described tone frequency channel wire screen, described shielding connecting line 15,25 can bring into play the conductor effect, realize the described shielding outer conductor 13 of disconnection mutually or the conduction between the described tone frequency channel wire screen 22, thereby further ensure normal shield effectiveness.
The present invention can be widely used in the wire transmission field of network communication.
Claims (6)
1. high-shielding audio and video information combined cable, comprise high mute video line (1), high shielding VON voice network winding thread (2), it is characterized in that: described high mute video line (1) is a coaxial wire, described high mute video line (1) comprises inner wire (11), foaming insulation layer (12), shielding outer conductor (13), video line sheath (14), described inner wire (11) is arranged at the inside of described foaming insulation layer (12), described shielding outer conductor (13) is arranged on the periphery of described foaming insulation layer (12), described video line sheath (14) is wrapped in the periphery of described shielding outer conductor (13), described shielding outer conductor (13) is an aluminium-plastic tape, described high shielding VON voice network winding thread (2) comprises some audio network twisted pair wires (21), the outer periphery of described audio network twisted pair wire (21) is equipped with tone frequency channel wire screen (22), described tone frequency channel wire screen (22) outer periphery is equipped with tone frequency channel wire sheath (23), be provided with related (3) between described video line sheath (14) and the described tone frequency channel wire sheath (23), described video line sheath (14), described tone frequency channel wire sheath (23), described related (3) are an integral body.
2. high-shielding audio and video information combined cable according to claim 1, it is characterized in that: described shielding outer conductor (13), described tone frequency channel wire screen (22) all adopt aluminium-plastic tape, described aluminium-plastic tape is made up of aluminium base and plastic layer, described inwardly aluminium base, described plastic layer outwardly, described aluminium base thickness is more than or equal to 0.15mm, and described plastic layer adopts the modified plastics of low temperature self-adhesion, and the thickness of described plastic layer is more than or equal to 0.05mm.
3. high-shielding audio and video information combined cable according to claim 1 and 2, it is characterized in that: described high shielding VON voice network winding thread (2) adopts the communication twisted pair wire, described high shielding VON voice network winding thread (2) comprises 4 groups of audio network twisted pair wires (21), described 4 groups of audio network cable twisted pair wires (21) are wrapped in the inside of described tone frequency channel wire screen (22), described audio network twisted pair wire (21) comprises conductor (211), and described conductor (211) periphery is enclosed with polyethylene layer (212).
4. high-shielding audio and video information combined cable according to claim 3, it is characterized in that: described high shielding VON voice network winding thread (2) also comprises tears rope (24), describedly tears the inside that rope (24) and described audio network cable twisted pair wire (21) together are wrapped in described tone frequency channel wire screen (22).
5. high-shielding audio and video information combined cable according to claim 2, it is characterized in that: be provided with shielding connecting line (15) between described foaming insulation layer (12) and described shielding outer conductor (13) aluminium base, aluminium base tight contact of described shielding connecting line (15) and described shielding outer conductor (13).
6. high-shielding audio and video information combined cable according to claim 2, it is characterized in that: be provided with shielding connecting line (25) between described audio network cable twisted pair wire (21) and described tone frequency channel wire screen (22) aluminium base, aluminium base tight contact of described shielding connecting line (25) and described tone frequency channel wire screen (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910192076A CN101702339A (en) | 2009-09-04 | 2009-09-04 | High-shielding audio and video information combined cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910192076A CN101702339A (en) | 2009-09-04 | 2009-09-04 | High-shielding audio and video information combined cable |
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| CN101702339A true CN101702339A (en) | 2010-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910192076A Pending CN101702339A (en) | 2009-09-04 | 2009-09-04 | High-shielding audio and video information combined cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231294A (en) * | 2011-04-22 | 2011-11-02 | 吴江市胜信光电科技有限公司 | Symmetrical coaxial composite cable |
| CN108648862A (en) * | 2018-05-02 | 2018-10-12 | 长沙明尧测控科技有限公司 | Audio and video output line |
| CN108682485A (en) * | 2018-06-20 | 2018-10-19 | 浙江天杰实业股份有限公司 | A kind of new types of data transmission composite rope and preparation method thereof |
-
2009
- 2009-09-04 CN CN200910192076A patent/CN101702339A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231294A (en) * | 2011-04-22 | 2011-11-02 | 吴江市胜信光电科技有限公司 | Symmetrical coaxial composite cable |
| CN108648862A (en) * | 2018-05-02 | 2018-10-12 | 长沙明尧测控科技有限公司 | Audio and video output line |
| CN108682485A (en) * | 2018-06-20 | 2018-10-19 | 浙江天杰实业股份有限公司 | A kind of new types of data transmission composite rope and preparation method thereof |
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Open date: 20100505 |