CN210778022U

CN210778022U - Electromagnetic shielding wire harness

Info

Publication number: CN210778022U
Application number: CN201921717008.4U
Authority: CN
Inventors: 周海燕; 周顺; 纪祥; 周忠
Original assignee: Wuhu Qiaoyun & Youxing Electrical Industrial Co ltd
Current assignee: Wuhu Qiaoyun & Youxing Electrical Industrial Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-06-16
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses an electromagnetic shield pencil, including the heart yearn, the heart yearn includes wire and insulating layer, the insulating layer parcel is peripheral at the wire, many the heart yearn is restrainted to twist and is formed the heart yearn collection together, and many heart yearns are restrainted the hank direction the same, the periphery from interior to exterior of heart yearn collection has fire-retardant layer, shielding layer and protective layer in proper order the cladding, it has the filler to fill between heart yearn and the fire-retardant layer, be fixed with a plurality of anti-abrasive strip on the protective layer outside circumferenci. The core wires are twisted together, and the electromagnetic wave radiated by each core wire in the transmission process can be counteracted by the electromagnetic wave emitted by other core wires, so that the degree of signal interference is effectively reduced; the shielding layer has good conductivity, and can improve the characteristic of the wire harness for shielding external electromagnetic signals.

Description

Electromagnetic shielding wire harness

Technical Field

The utility model relates to an electron pencil technical field, concretely relates to electromagnetic shield pencil.

Background

The wiring harness is used for connecting signals and power supplies of the carrying equipment, is a wiring part for connecting each electrical equipment in a circuit, is used for transmitting the signals and the power supplies between electronic components, and the carrying equipment is provided with more parts capable of generating electromagnetism, so that the wiring harness is often interfered by electromagnetism to cause that the signal transmission quality is quite poor or even the signals cannot be transmitted, and the normal work of the equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electromagnetic shield pencil to the pencil easily receives electromagnetic interference's problem among the solution prior art.

The electromagnetic shielding wire harness comprises core wires, wherein the core wires comprise wires and insulating layers, the insulating layers are wrapped on the periphery of the wires, the core wires are twisted together to form a core wire set, the twisting directions of the core wires are the same, the periphery of the core wire set is sequentially wrapped with a flame-retardant layer, a shielding layer and a protective layer from inside to outside, fillers are filled between the core wires and the flame-retardant layer, and a plurality of anti-abrasion strips are fixed on the outer side of the protective layer in the circumferential direction.

Preferably, the filler comprises PP ropes, and a plurality of the PP ropes are tightly attached to the core wire and the flame-retardant layer and arranged along the length direction of the cable harness.

Preferably, the inner layer of the flame-retardant layer is made of glass fiber, and the outer layer of the flame-retardant layer is made of nylon.

Preferably, the inner layer of the shielding layer is an aluminum foil, the outer layer of the shielding layer is a tinned copper wire mesh grid, and foam rubber is filled in gaps of the tinned copper wire mesh grid.

Preferably, the insulating layer and the protective layer are both made of polyvinyl chloride.

Preferably, the material of the wear-resistant strip is aluminum oxide.

The utility model has the advantages that: the core wires are twisted together, and the electromagnetic wave radiated by each core wire in the transmission process can be counteracted by the electromagnetic wave emitted by other core wires, so that the degree of signal interference is effectively reduced; the shielding layer has good conductivity, and can improve the characteristic of the wire harness for shielding external electromagnetic signals; the flame-retardant layer resists high temperature, so that the fire resistance of the wiring harness is increased, and the PP rope has small density and high hardness, so that the wiring harness has better integral rigidity; the polyvinyl chloride has better insulating property, and is firm and durable; the abrasion-proof strip reduces the abrasion of the surface of the wire harness and prolongs the service life of the wire harness.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

FIG. 2 is a schematic structural diagram of the present invention

The anti-abrasion cable comprises a conductor 1, an insulating layer 2, a flame-retardant layer 3, a shielding layer 4, a protective layer 5, a filler 6 and an anti-abrasion strip 7.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided to help those skilled in the art understand the concept and technical solutions of the present invention more completely, accurately and deeply.

As shown in fig. 1 and 2, the electromagnetic shielding wire harness comprises core wires, wherein each core wire comprises a wire 1 and an insulating layer 2, the insulating layer 2 wraps the periphery of the wire 1, the core wires are stranded together to form a core wire set, the stranded directions of the core wires are the same, the periphery of the core wire set is sequentially wrapped with a flame-retardant layer 3, a shielding layer 4 and a protective layer 5 from inside to outside, a filler 6 is filled between each core wire and the corresponding flame-retardant layer 3, and a plurality of wear-resistant strips 7 are fixed on the outer side of the protective layer 5 in the circumferential direction.

The filler 6 comprises PP ropes, and a plurality of the PP ropes are tightly attached to the core wire and the flame-retardant layer 3 and are arranged along the length direction of the wire harness.

The inner layer of the flame-retardant layer 3 is made of glass fiber, and the outer layer of the flame-retardant layer is made of nylon.

The shielding layer 4 is characterized in that the inner layer is an aluminum foil, the outer layer is a tinned copper wire mesh grid, and foam rubber is filled in gaps of the tinned copper wire mesh grid.

The insulating layer 2 and the protective layer 5 are both made of polyvinyl chloride.

The anti-abrasion strips 7 are made of aluminum oxide.

The utility model twists the core wires together, the electromagnetic wave radiated by each core wire in the transmission can be counteracted by the electromagnetic wave sent by other core wires, and the degree of signal interference is effectively reduced; the tinned copper wire mesh grid and the aluminum foil have good conductivity, so that the characteristic of shielding external electromagnetic signals of the wire harness can be improved; the nylon and the glass fiber tape have the characteristic of high temperature resistance, so that the fire resistance of the wiring harness is enhanced; the PP rope is small in density and high in hardness, and is filled between the core wire set and the flame-retardant layer, so that the wire harness has good integral rigidity; polyvinyl chloride has better insulativity, is firm and durable and has good protective performance; the abrasion-proof strip reduces the abrasion of the surface of the wire harness and prolongs the service life of the wire harness.

The above description is made for the exemplary purposes with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims

1. An electromagnetic shielding wire harness, characterized in that: the novel anti-abrasion core wire is characterized by comprising a core wire, the core wire comprises a wire (1) and an insulating layer (2), the insulating layer (2) is wrapped on the periphery of the wire (1), the core wire is stranded to form a core wire set, the stranded directions of the core wires are the same, the periphery of the core wire set is coated with an anti-abrasion layer (3), a shielding layer (4) and a protective layer (5) from inside to outside in sequence, a filler (6) is filled between the core wire and the anti-abrasion layer (3), and a plurality of anti-abrasion strips (7) are fixed on the circumferential direction of the outer side of the protective layer (5).

2. The electromagnetic shielding harness as claimed in claim 1, wherein: the filler (6) comprises PP ropes, and the PP ropes are tightly attached to the core wire and the flame-retardant layer (3) and are arranged along the length direction of the wire harness.

3. The electromagnetic shielding harness as claimed in claim 1, wherein: the inner layer of the flame-retardant layer (3) is made of glass fiber, and the outer layer of the flame-retardant layer is made of nylon.

4. The electromagnetic shielding harness as claimed in claim 1, wherein: the shielding layer (4) is characterized in that the inner layer is an aluminum foil, the outer layer is a tinned copper wire mesh grid, and foamed rubber is filled in gaps of the tinned copper wire mesh grid.

5. The electromagnetic shielding harness as claimed in claim 1, wherein: the insulating layer (2) and the protective layer (5) are made of polyvinyl chloride.

6. The electromagnetic shielding harness as claimed in claim 1, wherein: the anti-abrasion strips (7) are made of aluminum oxide.