CN115410761A - A composite shielded mosaic ground wire structure automobile wire - Google Patents

Abstract

The invention provides an automobile electric wire with a combined shielding inlaid ground wire structure in the technical field of automobile electric wires, comprising: three sets of insulated wire cores twisted with each other; a layer of aluminum-plastic composite tape shielding layer wrapped around each of the insulated wire cores On the outside, one side is attached to the side walls of two sets of insulated wire cores to form a cavity; a ground wire set is set in the cavity; a braided shielding layer is wrapped around the aluminum-plastic composite tape shielding layer And the outside of the ground wire group; one layer of outer sheath, wrapped on the outside of the braided shielding layer; the insulated wire core includes: two sets of wire groups; two layers of insulating layers, respectively wrapped on the outside of one of the wire groups , and twisted with each other; the ground wire group and the wire group both include several regular twisted wires. The invention has the advantages of greatly improving the anti-interference performance of the automobile electric wire and greatly reducing the volume.

Description

A combined shielding inlaid ground wire structure automobile wire

technical field

The invention relates to the technical field of automobile electric wires, in particular to an automobile electric wire with a combined shielding embedded ground wire structure.

Background technique

With the rapid development of new energy, the sales of electric vehicles are also increasing day by day. Compared with traditional fuel vehicles, electric vehicles are more intelligent and integrate more functions. In order to realize these functions, the central control system of electric vehicles needs to connect various functional modules through wires. In order to ensure the reliability of control signal transmission, these wires need to have certain anti-interference ability. However, traditionally used to connect the central control system of automobiles The wires are not shielded, the ability to resist external interference is poor, and the wiring harness is loose, which takes up a lot of space.

Therefore, how to provide an automotive wire with a combined shielding inlaid ground wire structure to improve the anti-interference performance and reduce the volume of the automotive wire has become an urgent technical problem to be solved.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automobile wire with a combined shielding embedded ground wire structure, so as to improve the anti-interference performance of the automobile wire and reduce the volume.

The present invention is achieved in this way: a combined shielding inlaid ground wire structure automobile wire, comprising:

Three sets of insulated wire cores, twisted with each other;

A layer of aluminum-plastic composite tape shielding layer wrapped around the outside of each of the insulated wire cores, one side of which is attached to the side walls of the two sets of insulated wire cores to form a cavity;

A ground wire set is arranged in the cavity;

One layer of braided shielding layer wrapped on the outside of the aluminum-plastic composite tape shielding layer and the ground wire group;

a layer of outer sheath wrapped around the outer side of the braided shielding layer;

The insulated core includes:

Two sets of wires;

Two layers of insulating layers are respectively wrapped on the outer side of one of the wire groups and twisted with each other;

Both the ground wire group and the wire group include several regular twisted wires.

Further, the braided shielding layer is made of tinned copper wires.

Further, the outer sheath and the insulating layer are made of cross-linked polyolefin.

Further, the wires are copper wires.

Further, a layer of tin is electroplated on the surface of the copper wire.

Further, the cross section of the wire is circular.

Further, the wire adopts a regular twisted structure of 1+6+12.

The advantages of the present invention are:

1. By wrapping a layer of aluminum-plastic composite tape shielding layer on the outside of each insulated wire core, wrapping a layer of braided shielding layer on the outside of the aluminum-plastic composite tape shielding layer and the ground wire group, that is, using aluminum-plastic composite tape shielding layer plus braiding The combined shielding structure of the shielding layer can effectively shield external electromagnetic interference, and both the insulating layer and the insulating core adopt a twisted structure, which makes the automobile wire have an electromagnetic field self-balancing effect, and finally greatly improves the anti-interference performance of the automobile wire.

2. A cavity is formed by attaching one side of the shielding layer of the aluminum-plastic composite tape to the side walls of two sets of insulated wire cores, and the ground wire group is placed in the cavity, that is, the ground wire group adopts a mosaic structure. In addition, each wire adopts a regular twisted structure, and there is no gap between the wires, which greatly reduces the outer diameter of the automobile wire, thereby greatly reducing the volume of the automobile wire, and reducing the amount of braided shielding layer and outer sheath. Reduced cost of automotive wiring.

3. By setting the wires to adopt a regular twisted structure, the structure of the automobile wires is extremely stable, that is, the structure of the automobile wires can remain stable when they are bent, which greatly improves the bending resistance of the automobile wires.

Description of drawings

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a structural schematic diagram of an automobile electric wire with a combined shielding inlaid ground wire structure according to the present invention.

Mark Description:

100-A combined shielded inlaid ground wire structure automotive wire, 1-insulated core, 2-aluminum-plastic composite tape shielding layer, 3-ground wire group, 4-braided shielding layer, 5-outer sheath, 11-conductor group , 12-insulation layer, 111-wire, 21-cavity.

Detailed ways

The embodiment of the present invention provides a combined shielded and inlaid ground wire structure automobile wire, which solves the problem that the wires used to connect the central control system of the automobile in the prior art are not shielded, have poor anti-interference ability, and the wire harness is loose and takes up space. The big technical problem has achieved the technical effect of greatly improving the anti-interference performance of automobile wires and greatly reducing the volume.

The technical solution in the embodiment of the present invention is to solve the above problems, the general idea is as follows: wrap a layer of aluminum-plastic composite tape shielding layer on the outside of each insulated wire core, wrap a layer of aluminum-plastic composite tape shielding layer and the outside of the ground wire group The braided shielding layer, and the insulating layer and the insulated wire core adopt a twisted structure, shielding the electromagnetic interference from the outside and self-balancing the electromagnetic field to improve the anti-interference performance of the automotive wire; on one side of the shielding layer of the aluminum-plastic composite tape Attached to the side walls of two sets of insulated wire cores to form a cavity, and the ground wire is set in the cavity, plus each wire adopts a regular twisted structure, there is no gap between the wires, so as to reduce the volume of the car wire.

In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Please refer to Fig. 1, a preferred embodiment of a combined shielded inlaid ground wire structure automotive wire 100 of the present invention, including:

Three groups of insulated wire cores 1 are twisted with each other, that is, twisted;

A layer of aluminum-plastic composite tape shielding layer 2 is wrapped on the outside of each of the insulated cores 1, one side of which is attached to the side walls of two sets of insulated cores 1 to form a cavity 21;

A ground wire group 3 is arranged in the cavity 21;

One layer of braided shielding layer 4 is wrapped on the outside of the aluminum-plastic composite tape shielding layer 2 and the ground wire group 3; the aluminum-plastic composite tape shielding layer 4 and the braided shielding layer 4 are both used to shield external electromagnetic interference;

A layer of outer sheath 5, wrapped on the outside of the braided shielding layer 4, for providing protection to the automotive wire 100;

The insulated wire core 1 includes:

Two sets of wire groups 11, that is, the automobile wire 100 adopts a cable core with a 3*2 structure;

Two layers of insulating layers 12 are respectively wrapped on the outside of one of the wire groups 11, and are twisted with each other, that is, twisted; the insulating layer 12 is uniformly extruded by extruded tube, and the thickness is not less than the nominal thickness of the insulating layer 80% of;

That is, after the two groups of wire groups 11 are wrapped with the insulating layer 12 and twisted in pairs, the three groups of the insulated wire cores 1 are twisted again.

Both the ground wire group 3 and the wire group 11 include several regular twisted wires 111 .

The braided shielding layer 4 is made of tinned copper wires.

The outer sheath 5 and the insulating layer 12 are made of cross-linked polyolefin, and the temperature range is -40°C-150°C. The dielectric constant and loss tangent of cross-linked polyolefin are very low, and the frequency changes will affect it. Small, suitable for insulation of high-frequency lines, which can better ensure the quality of signal transmission.

The wire 111 is a copper wire with a purity above 99.99%.

A layer of tin (not shown) is electroplated on the surface of the copper wire 111 , and the copper wire 111 is protected from oxidation by electroplating a layer of tin on the surface of the copper wire 111 .

The cross section of the wire 111 is circular.

The wires 111 adopt a regular twisted structure of 1+6+12, that is, one wire 111 is at the innermost side, 6 wires 111 are surrounded by one layer outward, and 12 wires 111 are surrounded by an outer layer. By analogy, there is no gap between the wires 111 .

The working principle of the present invention:

When the automobile electric wire 100 is applied to the central control system of the automobile, the automobile electric wire 100 is protected by the outer sheath 5, and the external electromagnetic interference is shielded by the braided shielding layer 4, and then the aluminum-plastic composite is used to shield the automobile electric wire 100. The shielding layer 2 performs secondary shielding against external electromagnetic interference, and each of the wires 111 performs self-balancing of the electromagnetic field through a twisted structure when transmitting signals, so as to ensure the quality of signal transmission.

In summary, the advantages of the present invention are:

1. By wrapping a layer of aluminum-plastic composite tape shielding layer on the outside of each insulated wire core, wrapping a layer of braided shielding layer on the outside of the aluminum-plastic composite tape shielding layer and the ground wire group, that is, using aluminum-plastic composite tape shielding layer plus braiding The combined shielding structure of the shielding layer can effectively shield external electromagnetic interference, and both the insulating layer and the insulating core adopt a twisted structure, which makes the automobile wire have an electromagnetic field self-balancing effect, and finally greatly improves the anti-interference performance of the automobile wire.

2. A cavity is formed by attaching one side of the shielding layer of the aluminum-plastic composite tape to the side walls of two sets of insulated wire cores, and the ground wire group is placed in the cavity, that is, the ground wire group adopts a mosaic structure. In addition, each wire adopts a regular twisted structure, and there is no gap between the wires, which greatly reduces the outer diameter of the automobile wire, thereby greatly reducing the volume of the automobile wire, and reducing the amount of braided shielding layer and outer sheath. Reduced cost of automotive wiring.

3. By setting the wires to adopt a regular twisted structure, the structure of the automobile wires is extremely stable, that is, the structure of the automobile wires can remain stable when they are bent, which greatly improves the bending resistance of the automobile wires.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments we have described are only illustrative, rather than used to limit the scope of the present invention. Equivalent modifications and changes made by skilled personnel in accordance with the spirit of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (7)

1. The utility model provides a ground wire structure car electric wire is inlayed in combination shielding which characterized in that: the method comprises the following steps:

three groups of insulated wire cores are twisted with each other;

the aluminum-plastic composite tape shielding layer wraps the outer sides of the insulated wire cores, and one side of the aluminum-plastic composite tape shielding layer is attached to the side walls of the two groups of insulated wire cores to form a cavity;

a ground wire set disposed in the cavity;

the woven shielding layer wraps the shielding layer of the aluminum-plastic composite belt and the outer side of the ground wire group;

the outer sheath is wrapped on the outer side of the braided shielding layer;

the insulated wire core includes:

two groups of lead groups;

the two insulating layers are respectively wrapped on the outer side of one lead group and are mutually twisted;

the ground wire group and the lead wire group both comprise a plurality of regularly twisted lead wires.

2. The automotive electrical wire with combined shielding and inlaid ground wire structure of claim 1, wherein: the braided shielding layer is composed of tinned copper wires.

3. The automotive electrical wire with combined shielding and inlaid ground wire structure of claim 1, wherein: the outer sheath and the insulating layer are made of cross-linked polyolefin.

4. The automotive wire with combined shielding and inlaid ground wire structure of claim 1, wherein: the conducting wire is a copper conducting wire.

5. The automotive wire with combined shielding and inlaid ground wire structure of claim 4, wherein: and a layer of tin is electroplated on the surface of the copper wire.

6. The automotive wire with combined shielding and inlaid ground wire structure of claim 1, wherein: the cross section of the wire is circular.

7. The automotive wire with combined shielding and inlaid ground wire structure of claim 1, wherein: the conducting wire adopts a regular twisted structure of 1+6+ 12.

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