CN201274198Y

CN201274198Y - Coaxial electric cable for LAN and combined electric cable comprising the coaxial electric cable

Info

Publication number: CN201274198Y
Application number: CNU200820201744XU
Authority: CN
Inventors: 陈伟乐; 肖翠玉; 陈占山
Original assignee: ZHUHAI YUXUN COAXIAL CABLE CO Ltd
Current assignee: ZHUHAI YUXUN COAXIAL CABLE CO Ltd
Priority date: 2008-10-13
Filing date: 2008-10-13
Publication date: 2009-07-15
Anticipated expiration: 2018-10-13

Abstract

The utility model discloses a coaxial cable for a local area network and a combination cable with the coaxial cable, aiming to provide the coaxial cable for the local area network and the combination cable with the coaxial cable, which have the advantages of good shielding property, low cost, tidy wiring and convenient maintenance. The coaxial cable comprises an inner conductor (11), a foaming insulating layer (12), a plastic-aluminum composite film belt (13), a conductive metal wire braiding (14) and a jacket (15) which are arranged along the radial direction in turn from inside to outside. The inner conductor (11) is the inner conductor of copper covered steel or copper covered aluminum or hollow copper pipe. The utility model can be extensively applied to the field of network communication.

Description

A kind of local area network (LAN) is with coaxial cable and comprise the combination cable of this coaxial cable

Technical field

The utility model relates to a kind of local area network (LAN) with coaxial cable and comprise the combination cable of this coaxial cable.

Background technology

Along with the development of scientific informationization, in a certain zone, utilize network to interconnect in many computers, form the technology of interaction and information sharing (that is: formation local area network (LAN)), nowadays be more and more widely used.In present prior art, the Network Transmission connecting line of local area network (LAN) is normally selected polyethylene coaxial cable, twisted-pair feeder and the optical fiber etc. of the foaming of chemical blowing principle for use.But, adopt the polyethylene coaxial cable person of chemical blowing principle foaming in the majority in the local area network (LAN) transmission medium from all many-sided analysis-by-synthesis contrasts such as the attenuation constant performance of line cost, transmission bandwidth, transmission signals, transmission range, secret and safe.At present, the manufacturing principle of this chemical blowing polyethylene coaxial cable is normally: extrude the polyethylene foam insulating barrier that one deck makes with chemical blowing process outside solid fine copper inner wire, the attached one deck fine copper of appearance bread silk at described polyethylene foam insulating barrier weaves as outer conductor again, extrude one deck pvc sheath again on described outer conductor surface at last, finish the manufacturing of total.Yet in present existing this manufacture process, existing deficiency is:

1, adopt the foaming degree of the polyethylene foam insulating barrier that chemical blowing process makes not high, and foam irregular all.Therefore, caused the waste of polythene material, again less than good the effect of information transmission.

2, this structure in use have only outer conductor one deck gauze screen, so the shield effectiveness of this structure is poor.

3, this polyethylene foam insulation coaxial cable adopts solid fine copper as inner wire and outer conductor, (that is: the power frequency that passes through in the conductor is high more according to the principle of kelvin effect, the electric current of flowing through in the conductors cross center is just few more, and the electric current of being flowed through by the outside circular direction of kernel of section is also many more.When power frequency reaches 1MHz when above, electric current almost all concentrates in a certain thickness of conductive surface, and the conductor core does not have electric current to flow through.), adopt solid fine copper inner wire and outer conductor just to cause the waste of noble metal copper product, the while has also been increased the weight of the weight of cable itself, has improved the construction cost of network.

The utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of shielding properties good, and cost is low, and wiring is neat, and local area network (LAN) easy to maintenance is with coaxial cable and comprise the combination cable of this coaxial cable.

The technical scheme that the utility model adopted is: local area network (LAN) coaxial cable in the utility model, comprise inner wire, foaming insulation layer, conductive wire braiding and sheath, described inner wire, described foaming insulation layer, the braiding of described conductive wire and described sheath radially are provided with successively from inside to outside, described local area network (LAN) also comprises the aluminum-plastic composite membrane band with coaxial cable, described aluminum-plastic composite membrane band is arranged between described foaming insulation layer and the braiding of described conductive wire, and described inner wire is copper covered steel or copper cover aluminum or hollow copper tubing inner wire.

Described foaming insulation layer is the insulating barrier that adopts the foaming of physical blowing principle to form.

Local area network (LAN) is comprising the above local area network (LAN) with in all technical schemes of coaxial cable with combination cable in the utility model, also comprise at least one described coaxial cable, nonwoven fabrics I and oversheath, described nonwoven fabrics I is wrapped in all described coaxial cables together, and described oversheath bag is attached to the surface of described nonwoven fabrics I.

Described foaming insulation layer also is the insulating barrier that adopts the foaming of physical blowing principle to form.

Be wrapped in the described nonwoven fabrics I and be in the outer surface of the described coaxial cable of center, described nonwoven fabrics II also is being wrapped.

What described nonwoven fabrics I was interior is wrapped thing except that described coaxial cable, also has flexibility material filler.

The beneficial effects of the utility model are: because inner wire is copper covered steel or copper cover aluminum or hollow copper tubing inner wire described in the utility model, so your conductive copper material this inner wire more saves than the solid inner conductor of same specification, also reduce the weight of self, improved the mechanical performances such as tensile strength of described inner wire; In like manner, the outer conductor of conductive wire braiding also can adopt this principle, thereby saves cost, improves the mechanical performance of cable.Because described foaming insulation layer is the insulating barrier that adopts the physical blowing principle to be foamed into, so the deviation of the foam degrees height of this insulating barrier, the good uniformity of foaming, radial dimension is also little, under same frequency, attenuation constant also than the similar cable on the existing market little, return loss is big, also can avoid or reduce electromagnetic reflection.Because described local area network (LAN) also comprises the aluminum-plastic composite membrane band with coaxial cable, described aluminum-plastic composite membrane band is arranged between described foaming insulation layer and the braiding of described conductive wire, so aluminum-plastic composite membrane band and the braiding of described conductive wire combine, play the effect of high shielding, guarantee that described cable single line has the ability of fidelity, high-frequency transmission information.Because described combination cable comprises at least one described coaxial cable, so can select the number of coaxial cable described in the described combination cable according to the demand of local area network (LAN) transmitted data amount, thereby increased the flexibility of client's selection in the utility model, simultaneously also make client's wiring process become more simple, maintenance becomes convenient.Because the setting of described nonwoven fabrics I and described nonwoven fabrics II so strengthened the physical property of combination cable, makes that the structure of combination cable is more stable.Because what described nonwoven fabrics I was interior is wrapped thing except that described single coaxial cable, also have flexibility material filler, so guaranteed whole piece combination cable rounding property in use, promptly guaranteed the structural stability of described combination cable.

Description of drawings

Fig. 1 is the assembly structure schematic diagram of the utility model standard coaxial cable;

Fig. 2 is the assembly structure schematic diagram of combination cable in the utility model.

Embodiment

Specific embodiment one:

As shown in Figure 1, local area network (LAN) comprises inner wire 11, foaming insulation layer 12, conductive wire braiding 14 and sheath 15 with coaxial cable in the utility model, and described inner wire 11, described foaming insulation layer 12, the braiding 14 of described conductive wire and described sheath 15 radially are provided with successively from inside to outside.Described local area network (LAN) also comprises aluminum-plastic composite membrane band 13 with coaxial cable, and described aluminum-plastic composite membrane band 13 is arranged between described foaming insulation layer 12 and the described conductive wire braiding 14, and described inner wire 11 is copper covered steel or copper cover aluminum or hollow circular-tube inner wire.

Described foaming insulation layer 12 is the insulating barriers that adopt the foaming of physical blowing principle to form.

Operation principle: earlier that the utility model is stretching, to lay, after two ends connected with independent computer or terminal respectively, this cable had just been started working.Described coaxial cable 1 constitutes a loop of telecommunication transmission together by described inner wire 11 and described aluminum-plastic composite membrane band 13 and described conductive wire braiding 14, by this loop, just can play the effect of mutually shared information.This loop has stoped the leakage of the signal of telecommunication in transmission course under the effect of described foaming insulation layer 12, guarantee the internal transmission of the signal of telecommunication at described foaming insulation layer 12, makes transmission signals that leakage phenomenon not take place.Described aluminum-plastic composite membrane band 13 and the braiding 14 of described conductive wire play shielding to outside electromagnetic signal in transmission course, guarantee whole video image information high-fidelity transmission.

Specific embodiment two:

As shown in Figure 2, local area network (LAN) comprises 8 described coaxial cables 1, nonwoven fabrics I2 and oversheaths 3 with combination cable in the utility model, described nonwoven fabrics I2 is wrapped in all described coaxial cables 1 together, and described oversheath (3) bag is attached to the surface of described nonwoven fabrics I2.Described coaxial cable 1 comprises inner wire 11, foaming insulation layer 12, conductive wire braiding 14 and sheath 15, described inner wire 11, described foaming insulation layer 12, the braiding 14 of described conductive wire and described sheath 15 radially are provided with successively from inside to outside, described local area network (LAN) also comprises aluminum-plastic composite membrane band 13 with coaxial cable, described aluminum-plastic composite membrane band 13 is arranged between described foaming insulation layer 12 and the described conductive wire braiding 14, and described inner wire 11 is copper covered steel or copper cover aluminum or hollow circular-tube inner wire.

Be wrapped in the described nonwoven fabrics I2 and be in the outer surface of the described coaxial cable 1 of center, described nonwoven fabrics II4 also is being wrapped.

Operation principle: earlier that the utility model is stretching, lay, after interconnecting with each independent computer or terminal, this cable just can have been worked.Described coaxial cable 1 constitutes a loop of telecommunication transmission together by described inner wire 11 and described aluminum-plastic composite membrane band 13 and described conductive wire braiding 14, by this loop, just can play the effect of mutual transmission information.This loop has stoped the leakage of the signal of telecommunication in transmission course under the effect of described foaming insulation layer 12, guarantee the internal transmission of the signal of telecommunication at described foaming insulation layer 12, makes transmission signals that leakage phenomenon not take place.Described aluminum-plastic composite membrane band 13 and the braiding 14 of described conductive wire play shielding to outside electromagnetic signal in transmission course, guarantee whole video image information high-fidelity transmission.

The physical property such as compression strength, non-moisture-sensitive of this combination cable has been strengthened in the setting of described nonwoven fabrics I2, makes that the structure of combination cable is more stable.

3 pairs of whole cables of oversheath described in the utility model play comprehensive protective effect.

The utility model can be widely used in field of network communication.

Under the situation that does not break away from the present utility model conception, all application the utility model specifications and accompanying drawing content and the various equivalences of being done change, and all reason is with being contained in the claim protection range of the present utility model.

Claims

1, a kind of local area network (LAN) coaxial cable, comprise inner wire (11), foaming insulation layer (12), conductive wire braiding (14) and sheath (15), described inner wire (11), described foaming insulation layer (12), described conductive wire braiding (14) and described sheath (15) radially are provided with successively from inside to outside, it is characterized in that: described local area network (LAN) also comprises aluminum-plastic composite membrane band (13) with coaxial cable, described aluminum-plastic composite membrane band (13) is arranged between described foaming insulation layer (12) and the described conductive wire braiding (14), and described inner wire (11) is copper covered steel or copper cover aluminum or hollow copper tubing inner wire.

2, a kind of local area network (LAN) coaxial cable according to claim 1 is characterized in that: described foaming insulation layer (12) is the insulating barrier that adopts the foaming of physical blowing principle to form.

3, a kind of local area network (LAN) combination cable that comprises local area network (LAN) described in the claim 1 with coaxial cable, it is characterized in that: comprise at least one described coaxial cable (1), nonwoven fabrics I (2) and oversheath (3), described nonwoven fabrics I (2) is wrapped in all described coaxial cables (1) together, and described oversheath (3) bag is attached to the surface of described nonwoven fabrics I (2).

4, a kind of local area network (LAN) combination cable that comprises local area network (LAN) described in the claim 1 with coaxial cable according to claim 3, it is characterized in that: described foaming insulation layer (12) is the insulating barrier that adopts the foaming of physical blowing principle to form.

5, according to claim 3 or 4 described a kind of local area network (LAN) combination cables that comprise local area network (LAN) described in the claim 1 with coaxial cable, it is characterized in that: be wrapped in the described nonwoven fabrics I (2) and be in the outer surface of the described coaxial cable (1) of center, described nonwoven fabrics II (4) also is being wrapped.

6, according to claim 3 or 4 described a kind of local area network (LAN) combination cables that comprise local area network (LAN) described in the claim 1 with coaxial cable, it is characterized in that: what described nonwoven fabrics I (2) was interior is wrapped thing except that described coaxial cable (1), also has flexibility material filler.