CN215069325U

CN215069325U - High-low temperature resistant multilayer metal shielding anti-interference data bus cable for communication field

Info

Publication number: CN215069325U
Application number: CN202121394629.0U
Authority: CN
Inventors: 胡志贞; 胡灯有; 姜宝翔
Original assignee: Yangzhou Huayu Cable Co ltd
Current assignee: Yangzhou Huayu Cable Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-07
Anticipated expiration: 2031-06-22

Abstract

The application discloses a high and low temperature resistant multilayer metal shielding anti-interference data bus cable for the communication field, which sequentially comprises a winding layer, a first shielding layer, a second shielding layer and an outer sheath from inside to outside, wherein a central core wire, a plurality of tubular first filling core wires, a plurality of tubular second filling core wires and a plurality of cable cores are arranged in the winding layer; the cable core comprises a conductor, an insulating layer, an inner shielding layer and an inner protection layer from inside to outside in sequence. The cable of this application is applicable to aviation, navigation field, and signal transmission is stable.

Description

High-low temperature resistant multilayer metal shielding anti-interference data bus cable for communication field

Technical Field

The application relates to the field of cables, in particular to a high-temperature-resistant and low-temperature-resistant multilayer metal shielding anti-interference data bus cable for the communication field.

Background

The data bus cable is used for data transmission, has wide application occasions, is used for indoor signal transmission for some data bus cables, is relatively easy to meet the protection characteristic of the cable due to the environmental temperature, is commonly used for equipment of airplanes, ships and spacecrafts for some data bus cables, has higher requirements on the cable due to the working environment characteristic, can be stably used in severe environment, has good anti-interference and ionization radiation resistance characteristics, and has higher structural requirements on the cable.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the application aims to overcome the defects of the prior art and provides a high-low temperature resistant multilayer metal shielding anti-interference data bus cable for the communication field.

The technical scheme is as follows: a high and low temperature resistant and anti-interference data bus cable for the communication field sequentially comprises a wrapping layer, a first shielding layer, a second shielding layer and an outer sheath from inside to outside, wherein a central core wire, a plurality of tubular first filling core wires, a plurality of tubular second filling core wires and a plurality of cable cores are arranged in the wrapping layer, the number of the first filling core wires, the number of the second filling core wires and the number of the cable cores are four, 4 first filling core wires surround the central core wire, each first filling core wire is positioned between the central core wire and two cable cores, and each second filling core wire abuts against two cable cores and the wrapping layer; the cable core comprises a conductor, an insulating layer, an inner shielding layer and an inner protection layer from inside to outside in sequence.

Further, the first shielding layer is a polyimide film shielding layer, and the second shielding layer is a tinned copper wire braided shielding layer; the inner shielding layer is a tinned copper wire braided shielding layer.

Further, the central core wire is a steel wire rope, and the outer sheath is a polyethylene outer sheath.

Further, the first and second filled cores are both made of a polyolefin material or a cross-linked ethylene-tetrafluoroethylene copolymer material.

Further, the diameter of the second filler wire is greater than the diameter of the first filler wire.

Further, the conductor is a copper conductor, the insulating layer is a polyethylene insulating layer, and the wrapping layer is a mica tape wrapping layer.

Has the advantages that: the cable is suitable for the fields of aviation and ships, has good stability, effective anti-interference and ionization radiation resistance, and can provide stable signal transmission in severe environments.

Drawings

Fig. 1 is a schematic cross-sectional view of a cable.

Detailed Description

Reference numerals: 1, a central core wire; 2 a first filled core wire; 3 a second filled core; 4.1 a conductor; 4.2 an insulating layer; 4.3 inner shield layer; 4.4 inner protecting layer; 5.1 wrapping a covering; 5.2 first shielding layer; 5.3 a second shielding layer; 5.4 outer sheath.

The following detailed description is made with reference to the accompanying drawings: a high and low temperature resistant multilayer metal shielding anti-interference data bus cable for the communication field sequentially comprises a wrapping layer 5.1, a first shielding layer 5.2, a second shielding layer 5.3 and an outer sheath 5.4 from inside to outside, wherein the wrapping layer is internally provided with a central core wire 1, a plurality of tubular first filling core wires 2, a plurality of tubular second filling core wires 3 and a plurality of cable cores, the number of the first filling core wires 2, the number of the second filling core wires 3 and the number of the cable cores are four, the 4 first filling core wires 2 surround the central core wire 1, each first filling core wire 2 is positioned between the central core wire 1 and two cable cores, and each second filling core wire 3 is abutted against the two cable cores and the wrapping layer 5.1; the cable core comprises a conductor 4.1, an insulating layer 4.2, an inner shielding layer 4.3 and an inner protecting layer 4.4 from inside to outside in sequence.

The first shielding layer 5.2 is a polyimide film shielding layer, and the second shielding layer 5.3 is a tinned copper wire braided shielding layer; the inner shielding layer 4.3 is a tinned copper wire braided shielding layer. The central core wire 1 is a steel wire rope, and the outer sheath 5.4 is a polyethylene outer sheath. The first filling core wire 2 and the second filling core wire 3 are both made of polyolefin material or cross-linked ethylene-tetrafluoroethylene copolymer material. The diameter of the second filler wire 3 is greater than the diameter of the first filler wire 2. The conductor 4.1 is a copper conductor, the insulating layer 4.2 is a polyethylene insulating layer, and the wrapping layer 5.1 is a mica tape wrapping layer.

As shown in the figure: the utility model provides a cable has a plurality of first filling heart yearns and a plurality of second filling heart yearns, and the transposition is more stable, and the structure is more regular to first filling heart yearn provides the buffering between a plurality of cable cores and central core line, and a plurality of second filling heart yearns provide the buffering in the periphery of cable core, thereby better to the protective effect of heart yearn, and adopt multilayer shielding structure, anti-interference, magnetic screen are effectual. Mica is adopted to have a certain flame retardant effect around the tape. Therefore, the cable is suitable for severe environments such as aviation, navigation and the like.

Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims

1. A high and low temperature resistant multilayer metal shielding anti-interference data bus cable for the communication field is characterized by comprising a wrapping layer, a first shielding layer, a second shielding layer and an outer sheath in sequence from inside to outside, wherein a central core wire, a plurality of tubular first filling core wires, a plurality of tubular second filling core wires and a plurality of cable cores are arranged in the wrapping layer, the number of the first filling core wires, the number of the second filling core wires and the number of the cable cores are four, 4 first filling core wires surround the central core wire, each first filling core wire is positioned between the central core wire and two cable cores, and each second filling core wire is abutted against two cable cores and the wrapping layer; the cable core comprises a conductor, an insulating layer, an inner shielding layer and an inner protection layer from inside to outside in sequence.

2. The high and low temperature resistant multilayer metal shielding anti-interference data bus cable for communication field according to claim 1, wherein the first shielding layer is a polyimide film shielding layer, and the second shielding layer is a tinned copper wire braided shielding layer; the inner shielding layer is a tinned copper wire braided shielding layer.

3. The high and low temperature resistant multilayer metal shielding anti-interference data bus cable for communication field according to claim 1, wherein the central core wire is a steel wire rope, and the outer sheath is a polyethylene outer sheath.

4. The high and low temperature resistant multilayer metal shielding anti-interference data bus cable for communication field according to claim 1, wherein the first and second filler cores are made of polyolefin material or cross-linked ethylene-tetrafluoroethylene copolymer material.

5. The high and low temperature resistant multilayer metal shielded interference free data bus cable of claim 1 wherein the diameter of the second filler core is larger than the diameter of the first filler core.

6. The high and low temperature resistant multilayer metal shielding anti-interference data bus cable for the communication field according to claim 1, wherein the conductor is a copper conductor, the insulating layer is a polyethylene insulating layer, and the wrapping layer is a mica tape wrapping layer.