CN205158927U - Frequency conversion flexible cable - Google Patents

Abstract

The utility model provides a frequency conversion flexible cable, it includes three piece -root grafting ground sinle silks, three power core, fire -retardant area, aluminium strip, shielding band, restrictive coating, three piece -root grafting ground sinle silks and three power core twist the composite cable main part each other, fire -retardant area is around wrapping outside the cable main part, aluminium strip, shielding layer, restrictive coating set gradually from inside to outside and incline at fire -retardant outband. Three power core include to be restrainted by many smart thin copper wire and close or outer extruded insulation layer of conductor, conductor and the outer copper wire woven shield of insulating layer that compound hank constitutes, three piece -root grafting ground sinle silks include restraints outer extruded insulation layer of conductor, conductor and the outer copper wire woven shield of insulating layer who closes or answer the hank and constitute by many smart thin copper wire. The utility model discloses following beneficial effect has: insulation core adopts the flexible conductor structure, and the flexibility who has increased the conductor can, a plurality of compound shieldings supply each other, can effectively eliminate high frequency harmonic electromagnetic pollution to external world, can shield the interference of external electromagnetism to the cable simultaneously.

Description

A kind of frequency conversion flexible cable

Technical field

The utility model relates to a kind of frequency conversion flexible cable, belongs to field of cable technology.

Background technology

With the obvious advantage in energy-conservation of current variable-frequency motor, frequency-changing cable uses also more and more extensive, the frequency-changing cable structure of each producer is similar, comprise three large three little cores, core is made up of conductor and the insulating barrier that extrudes, lapped shielding layer, proof copper-wire braided shielding and oversheath after core stranding, what have is adding metal armouring to strengthen electromagnetic signal shield effectiveness in the outside of oversheath.But these frequency-changing cables of prior art all can not prevent the carrying out that cable high-frequency harmonic produces.

Utility model content

For defect of the prior art, the purpose of this utility model is to provide a kind of frequency conversion flexible cable.

The utility model is achieved through the following technical solutions:

The utility model provides a kind of frequency conversion flexible cable, it comprises three ground connection cores, three power wire core, inhibiting tape, aluminium strip, mask tape, restrictive coating, described three ground connection cores and three power wire core are twisted into cable main mutually, described inhibiting tape is wrapped outside cable main, described aluminium strip, screen, restrictive coating are successively set on outside inhibiting tape from inside to outside, and described power wire core comprises by many fine copper tow conjunctions or twists the conductor, the outer extruded insulation layer of conductor and the outer proof copper-wire braided screen of insulating barrier that form again; Described ground connection core comprises by many fine copper tow conjunctions or twists the conductor, the outer extruded insulation layer of conductor and the outer proof copper-wire braided screen of insulating barrier that form again.

Preferably, shown by the cross section of described cable main, ground connection core and power wire core replace symmetric arrays along the madial wall of inhibiting tape.

Preferably, described power wire core comprises the first conductor and is wrapped in the first insulating barrier outside described first conductor and the secondary shielding layer outside the first insulating barrier.

Preferably, described ground connection core comprises the second conductor and is wrapped in the second insulating barrier outside described second conductor.

Preferably, the shielding construction outside described inhibiting tape comprises the proof copper-wire braided screen outside aluminium strip and aluminium strip.

Compared with prior art, the utility model has following beneficial effect:

1. insulated wire cores adopts flexible conductor structure to meet national standard 5 class formation, the soft resist bending of conductor.

2. insulating barrier adopts cross-linked polyolefin or ethylene-propylene rubber material, and have good dielectric property, temperature grade is high, and ampacity is large.

3. cable is soft, easy for installation.

4. multiple composite shielding supplements mutually, effectively can eliminate high-frequency harmonic electromagnetic pollution to external world, can shield the interference of external electromagnetic to cable simultaneously.

Accompanying drawing explanation

By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:

Fig. 1 is the cross sectional representation of frequency conversion flexible cable of the present utility model;

In figure: 1, the first conductor; 2, the first insulating barrier; 3, the second conductor; 4, the second insulating barrier; 5, power wire core secondary shielding layer; 6, filler; 7, inhibiting tape; 8, aluminium strip; 9, the first screen; 10, restrictive coating.

Embodiment

Below in conjunction with specific embodiment, the utility model is described in detail.Following examples will contribute to those skilled in the art and understand the utility model further, but not limit the utility model in any form.It should be pointed out that to those skilled in the art, without departing from the concept of the premise utility, some distortion and improvement can also be made.These all belong to protection range of the present utility model.

The utility model provides a kind of cross section of frequency conversion flexible cable as shown in Figure 1, comprise three ground connection cores, three power wire core, power wire core secondary shielding layer 5, inhibiting tape 7, aluminium strip 8, first screen 9, restrictive coatings 10, three ground connection cores and three power wire core are alternately twisted into cable main mutually, inhibiting tape grafting is outside cable main, and aluminium strip, the first mask tape, one deck restrictive coating are successively set on the outside of inhibiting tape from inside to outside.Shown by the cross section of described cable main, ground connection core and power wire core replace symmetric arrays along the madial wall of inhibiting tape, and are filled with filler 6 in space between power wire core, ground connection core and inhibiting tape 7.

Wherein, the first insulating barrier is low smoke and zero halogen second third material, by extrusion process, is closely wrapped on the first conductor; Second insulating barrier is semiconductive EVA material, by extrusion process, is closely wrapped on the first conductor; Inhibiting tape is halogen-free flameproof band, and restrictive coating is low smoke and zero halogen restrictive coating.

Power wire core comprises the first conductor 1 and is wrapped in that the first insulating barrier 2, first insulating barrier 2 outside the first conductor 1 is outer to be also nested with secondary shielding band 5, first conductor 1 and to be closed by fine copper skein silk.

It is stranded by meticulous tin plated wire with the second insulating barrier 4, second conductor 4 be wrapped in outside the second conductor 3 that ground connection core comprises the second conductor 3.

First screen and secondary shielding layer form by proof copper-wire braided.

Above specific embodiment of the utility model is described.It is to be appreciated that the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present utility model.

Claims (3)

1. a frequency conversion flexible cable, it is characterized in that, comprise three ground connection cores, three power wire core, inhibiting tape, aluminium strip, mask tape, restrictive coating, described three ground connection cores and three power wire core are twisted into cable main mutually, described inhibiting tape is wrapped outside cable main, described aluminium strip, screen, restrictive coating are successively set on outside inhibiting tape from inside to outside, and described power wire core comprises by many fine copper tow conjunctions or twists the conductor, the outer extruded insulation layer of conductor and the outer proof copper-wire braided screen of insulating barrier that form again; Described ground connection core comprises by many fine copper tow conjunctions or twists the conductor, the outer extruded insulation layer of conductor and the outer proof copper-wire braided screen of insulating barrier that form again.

2. a kind of frequency conversion flexible cable as claimed in claim 1, is characterized in that, is shown by the cross section of described cable main, and ground connection core and power wire core replace symmetric arrays along the madial wall of inhibiting tape.

3. a kind of frequency conversion flexible cable as claimed in claim 1, is characterized in that, the gap of described power wire core and ground connection core arranges filler and compact by inhibiting tape grafting.