CN208954686U - A kind of Double-shield anti-disturbance communication cable - Google Patents

Abstract

The utility model relates to field of cable technology more particularly to a kind of Double-shield anti-disturbance communication cables.Including more cores, the core includes conductor, successively coat insulating layer from the inside to the outside outside conductor, separated-shielding aluminium strip wrapping layer, separated-shielding braiding layer, inner restrictive coating, ground wire is equipped on the inside of separated-shielding aluminium strip wrapping layer, total shielding aluminium strip wrapping layer is coated from the inside to the outside more core entirety peripheries, total screening braid, external sheath layer, separated-shielding braiding layer and total screening braid are made of tinned wird braiding, the count of separated-shielding braiding layer is not less than 68%, the count of total screening braid is not less than 52%, inner restrictive coating and external sheath layer are environmental-protection flame-retardant elastomer polyvinyl chloride material.The utility model provides a kind of Double-shield anti-disturbance communication cable that is structurally reasonable, reducing external magnetic field interference.

Description

A kind of Double-shield anti-disturbance communication cable

Technical field

The utility model relates to field of cable technology more particularly to a kind of Double-shield anti-disturbance communication cables.

Background technique

As means of transportation are intelligent, the implementation of scale, for the requirement for meeting Transit Equipment, signal communication Cabling requirements increasingly increase, cable need to have strong antijamming capability, anticorrosion, salt spray proof, waterproof, protection against rodents, fire-retardant, low cigarette without Poison, mechanical strength and electrical insulating property are high, long service life and the reliability of service height in complex environment, using common material Material processes this cable and is difficult to reach requirement.

Summary of the invention

The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of structurally reasonable, reduction external magnetic field interference Double-shield anti-disturbance communication cable.

In order to achieve the above object, the utility model adopts the following technical solutions: a kind of Double-shield anti-disturbance communication cable, packet Include more cores, the core includes conductor, outside conductor from the inside to the outside successively coat insulating layer, separated-shielding aluminium strip wrapping layer, Separated-shielding braiding layer, inner restrictive coating, on the inside of separated-shielding aluminium strip wrapping layer be equipped with ground wire, more core entirety peripheries by it is interior extremely Outer cladding always shields aluminium strip wrapping layer, total screening braid, external sheath layer, and separated-shielding braiding layer and total screening braid are by tin plating Copper wire woven is constituted, and the count of separated-shielding braiding layer is not less than 68%, and the count of total screening braid is not less than 52%, inner restrictive coating and external sheath layer are environmental-protection flame-retardant elastomer polyvinyl chloride material.

Preferably: insulating layer is expansion type low-smoke halogen-free polyolefin material.

Preferably: conductor is diameter 0.41mm tinned copper wire, and ground wire is the tinned copper wire of diameter 0.26mm.

The beneficial effects of the utility model are: the utility model has woven density up to 52% or more outside separated-shielding braiding layer Total screening braid, while wrapped aluminium strip constitutes composite shielding, and shield effectiveness is high, can effectively prevent extraneous signal dry It disturbs；Ground wire adds aluminium strip to add the composite shielding method of braiding layer in core simultaneously, using this multiple shield, it is ensured that single The efficiency of transmission and vulnerability to jamming of signal also ensure and do not generate the signal interferences such as coupling to the signal of other cores, more improve The interference performance of anti-outer signals keeps transmission quality unaffected in particular surroundings.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

In figure: 1- conductor；2- insulating layer；3- separated-shielding aluminium strip wrapping layer；4- ground wire；5- separated-shielding braiding layer；Shield in 6- Jacket layer；7- always shields aluminium strip wrapping layer；The total screening braid of 8-；9- external sheath layer.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples:

As shown in Figure 1, the utility model includes more cores, the core includes conductor 1, outside conductor 1 from the inside to the outside Insulating layer 2, separated-shielding aluminium strip wrapping layer 3, separated-shielding braiding layer 5, inner restrictive coating 6 are successively coated, in separated-shielding aluminium strip wrapping layer 3 Inside be equipped with ground wire 4, more core entirety peripheries coat from the inside to the outside always shield aluminium strip wrapping layer 7, total screening braid 8, External sheath layer 9, separated-shielding braiding layer 5 and total screening braid 8 are made of tinned wird braiding, the braiding of separated-shielding braiding layer 5 Density is not less than 68%, and the count of total screening braid 8 is not less than 52%, and inner restrictive coating 6 and external sheath layer 9 are environment-friendly type Flame-proof elastomer pvc material.

The cable conductor 1 of the utility model is straight using resistance to corrosion is strong in atmospheric environment and performance is sufficiently stable The tinned wird of diameter 0.41mm guarantees the communication quality of particular surroundings, meets pliability requirement using beam zygonema cored structure.Absolutely Edge layer 2 is this using the environmental-friendly halogen-free low-smoke polyolefine material with dielectric strength height, anticorrosion, superior, the low cigarette of anti-flammability Exhaust gas volumn is few when material combustion, the evolution of non-corrosive gas, self-extinguishment in 30 seconds, to environment, detection device, vehicle electronic device, Instrument and meter and personal safety will not bring attached injury, have and provide highly reliable service in relatively rugged environment.? Density has been woven up to 52% or more total screening braid 8 outside separated-shielding braiding layer 5, while wrapped aluminium strip, aluminium face out, by aluminium Belt and total braiding layer constitute composite shielding, and shield effectiveness is high, effectively extraneous signal can be prevented to interfere；Simultaneously in core In using diameter 0.26mm tinned copper wire ground wire 4 plus aluminium strip add the composite shielding method of braiding layer, using this multiple Shielding, it is ensured that the efficiency of transmission and vulnerability to jamming of single signal also ensure and do not generate coupling etc. to the signal of other cores Signal interference more improves the interference performance of anti-outer signals, keeps transmission quality unaffected in particular surroundings.Inner restrictive coating 6,9 layer choosing mechanical strength of external sheath layer and wearability be high, anti-dilatory, ageing-resistant, endurance, mould proof, salt spray proof, it is fire-retardant, The superior environmental-protection flame-retardant elastomer polyvinyl chloride material of protection against rodents, low temperature flexibility, this material is not by the salt fog, old in environment Mouse, moist influence, guarantee the stability of transmission quality.

The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without Improvement directly applies to other occasions, both is within the protection scope of the present invention.

Claims (3)

1. a kind of Double-shield anti-disturbance communication cable, it is characterised in that: including more cores, the core includes conductor (1), Conductor (1) successively coats insulating layer (2), separated-shielding aluminium strip wrapping layer (3), separated-shielding braiding layer (5), inner sheath from the inside to the outside outside Layer (6) is equipped with ground wire (4) on the inside of separated-shielding aluminium strip wrapping layer (3), coats total screen from the inside to the outside more core entirety peripheries Cover aluminium strip wrapping layer (7), total screening braid (8), external sheath layer (9), separated-shielding braiding layer (5) and total screening braid (8) It is made of tinned wird braiding, the count of separated-shielding braiding layer (5) is not less than 68%, the braiding of total screening braid (8) Density is not less than 52%, and inner restrictive coating (6) and external sheath layer (9) are environmental-protection flame-retardant elastomer polyvinyl chloride material.

2. Double-shield anti-disturbance communication cable according to claim 1, it is characterised in that: insulating layer (2) is that expansion type is low Cigarette halogen-free polyolefin material.

3. Double-shield anti-disturbance communication cable according to claim 1, it is characterised in that: conductor (1) is diameter 0.41mm Tinned copper wire, ground wire (4) are the tinned copper wire of diameter 0.26mm.