CN211350157U

CN211350157U - Comprehensive shielded cable

Info

Publication number: CN211350157U
Application number: CN201922499511.3U
Authority: CN
Inventors: 杨文伟
Original assignee: Jiangsu Changsheng Cable Group Co ltd
Current assignee: Jiangsu Changsheng Cable Group Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a comprehensive shielded cable, which is provided with at least one wire group, wherein the wire group is externally coated with a comprehensive shielding layer, the outside of the comprehensive shielding layer is coated with a sheath layer, the wire group is internally provided with more than one wire core, and the wire core consists of a metal conductor and an insulating layer coated outside the metal conductor; the comprehensive shielding layer is composed of an inner shielding copper foil, a middle layer wrapped outside the inner shielding copper foil and an outer shielding copper foil wrapped outside the middle layer, and the middle layer is formed by weaving or winding copper wires and steel wires. The comprehensive shielded cable is optimized in structure, excellent in composite electromagnetic shielding performance and capable of preventing crush injury, strain injury and extrusion injury.

Description

Comprehensive shielded cable

Technical Field

The utility model belongs to the technical field of the technique of cable and specifically relates to a synthesize shielded cable.

Background

In a complex electromagnetic interference radiation environment, a particular cable may have better shielding performance against electric field interference and also magnetic field interference. If the shielding and steel tape armored interference preventing layer is adopted, the shielding performance is enhanced, but the outer diameter of the cable is increased, and the bending performance is reduced.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the comprehensive shielding cable is optimized in structure and excellent in composite electromagnetic shielding performance, and meanwhile, the comprehensive shielding cable can be prevented from being crushed, pulled and extruded.

The utility model provides a technical scheme that its technical problem adopted is: a comprehensive shielded cable is provided with at least one wire group, wherein a comprehensive shielding layer is coated outside the wire group, a sheath layer is coated outside the comprehensive shielding layer, more than one wire core is arranged in the wire group, and each wire core is composed of a metal conductor and an insulating layer coated outside the metal conductor; the comprehensive shielding layer is composed of an inner shielding copper foil, a middle layer wrapped outside the inner shielding copper foil and an outer shielding copper foil wrapped outside the middle layer, and the middle layer is formed by weaving or winding copper wires and steel wires.

More specifically, in the above technical solution, the copper wires and the steel wires are arranged alternately.

More specifically, in the above technical solution, the inner shielding copper foil and the outer shielding copper foil are made of pure copper strips or film-coated copper strips.

More specifically, in the above technical scheme, the insulating layer is formed by wrapping the insulating layer, covering the glass fiber braided layer, and sintering the glass fiber braided layer by using polytetrafluoroethylene emulsion.

More specifically, in the above technical solution, the sheath layer is made of plastic or rubber.

The utility model has the advantages that: the utility model provides a comprehensive shielded cable has the good collaborative interference radiation function of resisting electric field, magnetic field, through the isolation absorption to electric field or magnetic field, makes the electromagnetic radiation interference of external world to self signal transmission weaken, perhaps makes the influence of self electromagnetic radiation interference to the external world weaken; meanwhile, the insulating layer is coated by the steel wire, the copper wire and the copper foil, and a weaving or winding mode is adopted, so that the cable is not easy to deform and has a certain bending function.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a first structural schematic diagram of the composite shielded cable of the present invention;

fig. 2 is a schematic diagram of a second structure of the composite shielded cable of the present invention.

The reference numbers in the figures are: 1. a wire core; 1-1, a metal conductor; 1-2, an insulating layer; 2. a composite shielding layer; 2-1, inner layer shielding copper foil; 2-2, shielding copper foil on the outer layer; 2-3, copper wire; 2-4, steel wires; 3. a sheath layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

See fig. 1 and fig. 2, the utility model discloses a comprehensive shielded cable has at least one group, and the outer cladding of group has comprehensive shielding layer 2, and the outer cladding of comprehensive shielding layer 2 has restrictive coating 3, has more than one sinle silk 1 in the group, can divide into groups between the sinle silk 1, and the transposition or adopt directly to drag. The wire core 1 consists of a metal conductor 1-1 and an insulating layer 1-2 coated outside the metal conductor 1-1; the comprehensive shielding layer 2 is composed of an inner shielding copper foil 2-1, a middle layer wrapped outside the inner shielding copper foil 2-1 and an outer shielding copper foil 2-2 wrapped outside the middle layer, the middle layer is formed by weaving or winding copper wires 2-3 and steel wires 2-4, and therefore normal working performance under an electric and magnetic cooperative radiation interference environment is maintained, or the influence of complex electromagnetic radiation interference on peripheral electrical equipment is reduced, electromagnetic radiation interference can be inhibited through a steel and copper cooperative structure, interference on internal signals of a cable is reduced, or the complex electromagnetic interference on external electrical equipment is reduced.

The metal conductor 1-1 may be made of copper or metal-plated copper. The insulating layer 1-2 may be made of a polymer material through an extrusion process. The copper wires 2-3 and the steel wires 2-4 can be covered with a metal plating layer or a coating. The inner layer shielding copper foil 2-1 and the outer layer shielding copper foil 2-2 are made of pure copper strips or film-coated copper strips. The copper wires 2-3 and the steel wires 2-4 are arranged alternately. The insulating layer 1-2 is formed by covering a glass fiber braided layer after wrapping the insulating layer and sintering by using polytetrafluoroethylene emulsion. The sheath layer 3 is made of plastic or rubber, and is one layer or two layers.

The steel wires 2-4 in the combined shielding layer 2 can improve the effect of shielding magnetic field interference through the characteristics of ferromagnetic materials. The copper wires 2-3 and the copper foil in the comprehensive shielding layer 2 can improve the effect of shielding electric field interference through the conductive property. In practice, the effect is poor and the reduction of eddy current cannot be really realized due to the fact that light is separated by the copper wires 2-3, the inner layer shielding copper foil 2-1 and the outer layer shielding copper foil 2-2, meanwhile, the electric continuity is kept, magnetic force lines can be weakened well, eddy current is reduced, namely when eddy current loss occurs in the inner layer shielding copper foil 2-1, the outer layer shielding copper foil 2-2 and the copper wires 2-3 in the middle layer in the comprehensive shielding layer 2, a magnetic force line loop can be effectively cut off, distortion penetration of the magnetic force lines is prevented, the eddy current effect is blocked, and heat damage caused by the eddy current and influences on current-carrying capacity and power are effectively reduced.

Theoretically, the magnetic force lines can not be completely blocked, and due to the blocking of the copper wires 2-3 and the copper strips, a part of the magnetic force lines can be twisted and expanded along a longer ferromagnetic passage, so that the eddy current effect is weakened; the other part of weaker magnetic lines of force can be increased due to the lengthening resistance of the whole ferromagnetic magnetic circuit, thereby forcibly penetrating through the copper material.

According to the patent product provided by the invention, the middle layer is formed by winding the copper wires 2-3 and the steel wires 2-4, and meanwhile, the inner layer shielding copper foil 2-1 and the outer layer shielding copper foil 2-2 are also in a winding type, so that the copper foils must be reversely wound with the middle layer to keep good grounding, otherwise, when certain conductors are in poor grounding, the interference in an alternating electric field cannot be reduced and can be strengthened.

The comprehensive shielding cable is optimized in structure, can be installed in equipment under a complex electromagnetic radiation environment condition, reduces the failure rate of the cable, has a good function of resisting the cooperative interference radiation of an electric field and a magnetic field, weakens the electromagnetic radiation interference of the outside on self signal transmission through the isolation and absorption effect on the electric field or the magnetic field, or weakens the influence of the electromagnetic radiation interference of the self on the outside, is particularly suitable for being used in occasions with cooperative electromagnetic field radiation environments, and can also be suitable for occasions with higher requirements on the cooperative electromagnetic radiation. Meanwhile, the comprehensive shielded cable has certain bending convenience in process installation and good tensile and compressive performances of the cable body, and the insulating layer is coated by the steel wires, the copper wires and the copper foils in a weaving or winding mode, so that the cable is not easy to deform and has a certain bending function.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An integrated shielded cable, comprising: the cable comprises at least one wire set, wherein a comprehensive shielding layer (2) is coated outside the wire set, a sheath layer (3) is coated outside the comprehensive shielding layer (2), more than one wire core (1) is arranged in the wire set, and each wire core (1) consists of a metal conductor (1-1) and an insulating layer (1-2) coated outside the metal conductor (1-1); the comprehensive shielding layer (2) is composed of an inner shielding copper foil (2-1), a middle layer wrapped outside the inner shielding copper foil (2-1) and an outer shielding copper foil (2-2) wrapped outside the middle layer, and the middle layer is formed by weaving or winding copper wires (2-3) and steel wires (2-4).

2. The composite shielded electrical cable of claim 1, wherein: the copper wires (2-3) and the steel wires (2-4) are arranged alternately.

3. The composite shielded electrical cable of claim 1, wherein: the inner layer shielding copper foil (2-1) and the outer layer shielding copper foil (2-2) are made of pure copper strips or film-coated copper strips.

4. The composite shielded electrical cable of claim 1, wherein: the insulating layer (1-2) is formed by covering a glass fiber braided layer after the insulating layer is wrapped and sintering by using polytetrafluoroethylene emulsion.

5. The composite shielded electrical cable of claim 1, wherein: the sheath layer (3) is made of plastic or rubber.