CN205004105U - Coaxial cable - Google Patents

Abstract

Be circular for overcoming among the prior art coaxial cable, this kind of circular shape coaxial cable is in the in a particular case installation and use great difficulty occasionally, and the wire rod is difficult to fixed problem, the utility model provides a coaxial cable. Including center conductor, insulating layer, shielding layer and the sheath that sets up from inside to outside, the cross -section gabarit of sheath is rectangle, triangle -shaped or other polygons. The utility model provides a coaxial cable has broken the centre of a circle design prejudice of conventionality among the conventional design, and the cross -section gabarit of its sheath adopts non -circular rectangle, triangle -shaped or other polygon shapes, and this type of coaxial cable is suitable for some in a particular case's installation and use, fixes more easily.

Description

A kind of coaxial cable

Technical field

The utility model relates to coaxial cable field.

Background technology

Coaxial cable be generally applicable to video field, communication system and whistle control system, for video monitoring circuit, broadcast singal control, public TV antenna, closed-circuit TV control system, for radio communication, transmission system and unidirectional control or the coaxial cable field of high-frequency machine intimate distribution.

At present, existing coaxial cable its generally comprise the center conductor of innermost layer, be molded over the outer field insulating barrier of center conductor, weave the screen of formation at insulating barrier outward, and the restrictive coating outside screen; What have is also provided with aluminium foil layer between braid and insulating barrier.

At present all coaxial cables are on the market circle, and have great difficulty when this kind of circular coaxial cable is installed under special circumstances and uses, wire rod is not easy to fix.

Utility model content

Be circle for overcoming prior art standard coaxial cable coaxial cable, have great difficulty when this kind of circular coaxial cable is installed under special circumstances and uses, wire rod is not easy the problem of fixing, and the utility model provides a kind of coaxial cable.

The coaxial cable that the utility model provides, comprises the center conductor, insulating barrier, screen and the sheath that arrange from inside to outside; The cross section gabarit of described sheath is rectangle, triangle or other polygons.

Preferably, also aluminium foil layer is provided with between described insulating barrier and screen.

Preferably, the cross section gabarit of described sheath is rectangle.

Preferably, the cross section gabarit of described sheath is square.

Preferably, described insulating barrier is polyethylene layer.

Preferably, described insulating barrier is crosslinked foaming polyethylene layer.

Preferably, described screen does wicking process.

The coaxial cable that the utility model provides, broken center of circle design prejudice conventional in conventional design, the cross section gabarit of its sheath adopts non-circular rectangle, triangle or other polygonal shapes.Such coaxial cable is suitable for some installation in particular cases and use, is more easily fixed.

Accompanying drawing explanation

Fig. 1 is the coaxial cable cross sectional representation provided in the utility model embodiment;

Fig. 2 is the coaxial cable stripping schematic perspective view provided in the utility model embodiment.

Wherein, 1, center conductor; 2, insulating barrier; 3, aluminium foil layer; 4, screen; 5, sheath.

Embodiment

The technical problem solved to make the utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

Embodiment

The preferred coaxial cable of one provided the utility model is carried out specific explanations explanation by this example, and as shown in Figure 1 and Figure 2, it comprises the center conductor 1, insulating barrier 2, screen 4 and the sheath 5 that arrange from inside to outside; The cross section gabarit of described sheath 5 is rectangle, triangle or other polygons.Wherein, in existing coaxial cable, generally also between described insulating barrier 2 and screen 4, be provided with aluminium foil layer 3.

The shape of this center conductor 1 is cylindrical, and insulating barrier 2, screen 4 and sheath 5 are tubulose, and namely the cross section of center conductor 1 is circular, and the cross section of insulating barrier 2, screen 4 and sheath 5 is annular.The cross section gabarit of so-called sheath 5 is the meaning of the cross section exterior contour of sheath 5.The cross section gabarit of conventional sheath 5 is circular, and the cross section gabarit in this example is non-circular, comprises above-mentioned rectangle, triangle or other polygons.Preferably, the cross section gabarit of described sheath 5 is rectangle.In this example, the cross section gabarit of described sheath 5 is square.

Center conductor 1 can be copper core, copper alloy core; Or the silver-plated copper core of silver-plated or zinc-plated formation outside copper core, copper alloy, tin-coated copper core, silver-plated copper alloy core or Tinplated copper alloy core; Can be the center conductor 1 of single core, also can be the multicore center conductor 1 that many conductor strand are formed.This example adopts the copper core of single core as center conductor 1, and its diameter is 1.10-1.15mm.Adopt the cost of copper core lower, its transmission performance is also very good, and cost performance is high.

The material of insulating barrier 2 can be made for materials such as PE (polyethylene), PP (polypropylene), fluoroplastics, it is generally extrusion molding, as preferred mode, expanded material extrusion molding can be adopted, the extrusion molding of crosslinked foaming material can also be adopted further.Crosslinked foaming polythene material is such as preferably adopted to make insulating barrier 2.Wherein, fluoroplastics comprise Kynoar (PTFE) or perfluoroalkoxy resin (PFA) or perfluoroethylene-propylene (FEP) or polyethylene (PE) or ethylene-tetrafluoroethylene copolymer (ETFE).The preferred one adopted in FEP, ETFE or PFA.Further preferably, insulating barrier 2 adopts the one in FEP, ETFE or PFA to prepare.As preferred mode, in this example, described insulating barrier 2 is polyethylene layer 2.Further preferred described insulating barrier 2 is crosslinked foaming polyethylene layer 2.

Described screen 4 is a wire sheathing, depending on use occasion, naked copper, tin-coated copper or silver-plated copper can be adopted as litzendraht wire, by braiding machine by 80-144 root is circular or flat line is divided into 16 ingots or 24 ingots weave, form described wire sheathing, the thickness of wire sheathing is generally 0.2-0.3mm.As a kind of optimal way, described screen 4 wicking, after wicking, tin thickness is about 0.01-0.05mm.

The material of sheath can be all kinds of fluororesin or PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride), LSZH (low-smoke non-halogen flame-retardant cable material) etc.

Coaxial cable manufacture craft described in this example is described below: polyethylene is made extruded stock by utility model, then by center conductor 1 and extruded stock extrusion molding one insulation core wire in an extruder, this insulation core wire comprises center conductor 1 and is wrapped in the insulating barrier 2 outside center conductor 1.Then by after this insulation core wire bag one deck aluminium foil layer, be placed on braiding machine, 16 roads or 24 tunnels etc. are adopted to weave a wire sheathing outward at insulation core wire, namely obtain one and there is center conductor 1, insulating barrier 2, the braiding heart yearn of aluminium foil layer 3 and screen 4, then the molten tin bath of soldering tin this braiding heart yearn is equipped with through one, to this braiding heart yearn wicking, obtain wicking braiding heart yearn, then by this braiding heart yearn through extruder, the extruder head of this extruder is set to extrude non-circular sheath 5, forming a cross section gabarit in the surperficial injection moulding of this braiding heart yearn is square sheath 5.

The coaxial cable that the utility model provides, broken center of circle design prejudice conventional in conventional design, the cross section gabarit of its sheath 5 adopts non-circular rectangle, triangle or other polygonal shapes.Such coaxial cable is suitable for some installation in particular cases and use, is more easily fixed.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.

Claims (7)

1. a coaxial cable, comprises the center conductor, insulating barrier, screen and the sheath that arrange from inside to outside; It is characterized in that, the cross section gabarit of described sheath is rectangle, triangle or other polygons.

2. coaxial cable according to claim 1, is characterized in that, is also provided with aluminium foil layer between described insulating barrier and screen.

3. coaxial cable according to claim 2, is characterized in that, the cross section gabarit of described sheath is rectangle.

4. coaxial cable according to claim 3, is characterized in that, the cross section gabarit of described sheath is square.

5. coaxial cable according to claim 1, is characterized in that, described insulating barrier is polyethylene layer.

6. coaxial cable according to claim 5, is characterized in that, described insulating barrier is crosslinked foaming polyethylene layer.

7. coaxial cable according to claim 2, is characterized in that, described screen does wicking process.