CN210245144U - Full-frequency anti-interference control cable for computer - Google Patents

Abstract

The utility model provides a full-frequency anti-interference control cable for a computer, which comprises a cable core and a composite coating layer wrapping the cable core; the cable core is formed by tightly attaching more than 2 groups of double-core wires into a bundle; each double-core wire is formed by wrapping a pair of twisted wire cores by a metal wire braided shielding layer; each wire core is formed by covering a copper guide wire with an insulating layer; the composite coating layer sequentially comprises a wrapping belt layer, a metal wire braided shielding layer and a thermoplastic elastomer layer from inside to outside. The utility model provides a signal transmission unstable reality dilemma under the complicated, frequent environment of thunder and lightning of space electromagnetic field, but the computer signal transmission under the special environment field such as space flight, aviation, ocean of wide application.

Description

Full-frequency anti-interference control cable for computer

Technical Field

The utility model relates to a wire and cable field, concretely relates to a control cable for computer.

Background

The computer cable belongs to the cable for electric equipment, the cable is suitable for electronic computer and automatic instrument and meter with 500V rated voltage and below and higher requirement for interference resistance, in order to reduce mutual interference and external interference between loops, the cable needs to adopt a shielding structure, and shielding materials comprise tinned or non-tinned copper wires, copper strips, copper-plastic composite strips, aluminum-plastic composite strips and the like. At present, the common control cable for the computer cannot simultaneously meet the technical requirement of normal signal transmission in ultra-high frequency and ultra-low frequency environments.

SUMMERY OF THE UTILITY MODEL

Various defects to above-mentioned prior art cable, the utility model aims at providing a full frequency jam-proof control cable for computer that is used for electromagnetic environment complicacy, the frequent environment of thunder and lightning down.

The utility model provides an above-mentioned technical problem specifically adopt following technical scheme:

a full-frequency anti-interference control cable for a computer is composed of a cable core and a composite coating layer for coating the cable core; the cable core is formed by tightly attaching more than 2 groups of double-core wires into a bundle; each double-core wire is formed by wrapping a pair of twisted wire cores by a metal wire braided shielding layer; each wire core is formed by covering a copper guide wire with an insulating layer; the composite coating layer sequentially comprises a wrapping belt layer, a metal wire braided shielding layer and a thermoplastic elastomer layer from inside to outside.

In the preferred scheme of the utility model, the cable core is formed by tightly attaching more than 10 groups of double-core wires into a bundle; the cable core further comprises a filling material, and all the double-core wires are arranged around the filling material to form a cylindrical cable core.

In a further preferred scheme of the utility model, the cable core by 12-18 group two heart yearns around the packing material circumference layering sets up and constitutes.

In the preferred scheme of the utility model, the metal wire braided shield layer can be silver-plated copper wire braided shield layer or zinc-plated steel wire braided shield layer.

In a further preferred scheme of the utility model, the double-core wire is formed by wrapping a pair of twisted wire cores by a silver-plated copper wire braided shielding layer; the metal wire braided shielding layer in the composite cladding layer is a galvanized steel wire braided shielding layer; namely, the silver-plated copper wire braided shielding layer is used as a sub-shielding layer to wrap each pair of twisted wire cores to form a double-core wire, and the zinc-plated steel wire braided shielding layer is used as a main shielding layer to wrap the whole cable core.

In the preferred scheme of the utility model, the insulating layer of sinle silk be and gather full fluorine ethylene propylene insulating layer.

In the preferred scheme of the utility model, the copper guide wire in the wire core is a silver-plated copper wire.

The utility model discloses in the preferred scheme, compound coating be mica around band layer around the band layer.

In the preferred embodiment of the present invention, the thermoplastic elastomer layer of the composite coating layer is a polyolefin thermoplastic elastomer sheath layer, and a low-density polyolefin thermoplastic elastomer material can be used.

The technical scheme of the utility model following beneficial effect has:

in the cable of the utility model, the double-core wire can achieve the effects of reducing attenuation and increasing anti-interference capability through the pair twisting design; meanwhile, the anti-interference capability of the cable can be fully improved through the arrangement of the sub-shielding layer and the main shielding layer which are woven by the metal wires; especially the utility model discloses in the preferred scheme, adopt silver-plated copper wire to weave the shielding layer as dividing the shielding layer, can realize that interior external environment does not have mutual electromagnetic interference under the medium-high frequency, weave total shielding layer through the galvanized steel wire, then realize the electromagnetic mutual interference of product inside and outside under low frequency environment such as thunder and lightning, electric power transmission and distribution. In addition, in the preferred scheme of the utility model, the electric conductivity of the product is improved by twisting the silver-plated soft copper wires, and the characteristic impedance is reduced to realize the rapid transmission of signals; the fluorinated ethylene propylene is adopted for insulation, so that the purposes of minimum signal transmission loss and normal work under a high-temperature environment are achieved; the polyolefin thermoplastic elastomer sheath is adopted, so that the physical and mechanical physical and chemical properties such as flexibility, aging resistance and the like of the product are improved;

in summary, the cable of the present invention has the advantages of low characteristic impedance, strong insulation, high, medium and low frequency full frequency interference prevention, low dielectric loss, large signal transmission capacity, etc. in the aspect of electrical performance; has the advantages of high tensile strength, high and low temperature resistance, environmental aging resistance, humidity and heat resistance, softness, good elasticity and the like in the aspects of mechanical and physical and chemical properties. The utility model discloses a solve the reality dilemma that signal transmission is unstable under the frequent environment of space electromagnetic field complicacy, thunder and lightning, but computer signal transmission under the special environment field such as wide application space flight, aviation, ocean.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:

fig. 1 is the cross-sectional structure diagram of a full-frequency anti-interference control cable for a computer according to embodiment 1 of the present invention.

In the figure:

the cable comprises 1-double-core wires, 2-filling materials, 3-silver-plated copper wire braided sub-shielding layers, 4-fluorinated ethylene propylene insulating layers, 5-silver-plated copper wires, 6-mica wrapping tapes, 7-galvanized steel wire braided total shielding layers and 8-polyolefin thermoplastic elastomer sheath layers.

Detailed Description

Example 1

A full-frequency anti-interference control cable for a computer comprises a cable core and a composite coating layer wrapping the cable core; the structure of the cross section of the cable core is shown in figure 1, and the cable core is formed by tightly layering and arranging 16 groups of double-core wires 1 in a bundle along the circumferential direction by taking a filling material 2 as a center; each double-core wire 1 is formed by wrapping a pair of twisted wire cores by a silver-plated copper wire braided sub-shielding layer 3 braided by silver-plated copper wires; each wire core is formed by coating a silver-plated copper wire 5 on a fluorinated ethylene propylene insulating layer 4; the composite coating layer sequentially comprises a mica tape winding layer 6, a galvanized steel wire woven total shielding layer 7 woven by galvanized steel wires and a polyolefin thermoplastic elastomer sheath layer 8 from inside to outside.

The polyolefin thermoplastic elastomer is made of a low-density polyolefin thermoplastic elastomer material.

It should be understood by those skilled in the art that the above embodiments are only used for illustrating the book utility model and not as a limitation of the present invention, and that the changes and modifications to the above embodiments are all within the scope of the claims of the present invention as long as they are within the spirit of the present invention.

Claims (9)

1. A full-frequency anti-interference control cable for a computer comprises a core and a composite coating layer for coating the core; the method is characterized in that: the cable core is formed by tightly attaching more than 2 groups of double-core wires into a bundle; each double-core wire is formed by wrapping a pair of twisted wire cores by a metal wire braided shielding layer; each wire core is formed by covering a copper guide wire with an insulating layer; the composite coating layer sequentially comprises a wrapping belt layer, a metal wire braided shielding layer and a thermoplastic elastomer layer from inside to outside.

2. The control cable of claim 1, wherein: the cable core is formed by tightly attaching more than 10 groups of double-core wires into a bundle; the cable core further comprises a filling material, and all the double-core wires are arranged around the filling material to form a cylindrical cable core.

3. The control cable of claim 2, wherein: the cable core is formed by arranging 12-18 groups of double-core wires in a layered mode around the circumferential direction of the filling material.

4. The control cable of claim 1, wherein: the metal wire braided shielding layer is a silver-plated copper wire braided shielding layer or a zinc-plated steel wire braided shielding layer.

5. The control cable of claim 4, wherein: the double-core wire is formed by wrapping a pair of twisted wire cores by a silver-plated copper wire braided shielding layer; the metal wire braided shielding layer in the composite cladding layer is a galvanized steel wire braided shielding layer; namely, the silver-plated copper wire braided shielding layer is used as a sub-shielding layer to wrap each pair of twisted wire cores to form a double-core wire, and the zinc-plated steel wire braided shielding layer is used as a main shielding layer to wrap the whole cable core.

6. The control cable of claim 1, wherein: the insulating layer of the wire core is a fluorinated ethylene propylene insulating layer.

7. The control cable of claim 1, wherein: the copper guide wire in the wire core is a silver-plated copper wire.

8. The control cable of claim 1, wherein: the wrapping tape layer of the composite coating layer is a mica wrapping tape layer.

9. The control cable of claim 1, wherein: the thermoplastic elastomer layer of the composite coating layer is a polyolefin thermoplastic elastomer sheath layer and is made of a low-density polyolefin thermoplastic elastomer material.

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