CN219163061U

CN219163061U - Novel shielding cable

Info

Publication number: CN219163061U
Application number: CN202223474357.2U
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-09
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a novel shielding cable, which comprises at least one wire core, and an insulating layer, a shielding layer and an outer sheath which are sequentially wrapped on the outer side of the wire core, wherein the shielding layer comprises a cloth base layer wrapping the outer periphery of the insulating layer, and a first metal paint layer attached to one of the inner periphery of the cloth base layer and the outer periphery of the cloth base layer. According to the novel shielding cable disclosed by the utility model, as the texture of the cloth base layer material is soft and the metal paint layer has elasticity, the shielding layer obtained by the metal paint mode is arranged outside the cloth base layer in a flowing coating mode, the novel shielding cable has better flexibility, the cable with the shielding layer has better flexibility, and the shielding effect of the shielding layer cannot be influenced after the cable is bent.

Description

Novel shielding cable

Technical Field

The utility model relates to the technical field of cables, in particular to a novel shielding cable.

Background

The larger the current passing through the cable in the process of charging, the stronger the magnetic field can be generated around the cable, so that the elements except the cable are not affected by the interference of the magnetic field, or the signal transmission of a control wire arranged in the cable is distorted due to the interference of other electromagnetic fields, a shielding structure is required to be arranged for the cable, the shielding net commonly used at present is formed by braiding metal wires, and the metal foil is spirally wound on the inner layer or the outer side of the metal wires, so that the flexibility of the cable can be reduced, and meanwhile, large-scale equipment is required to be used when the metal braiding layer and the metal foil are arranged, so that the production cost of the cable can be increased.

Therefore, the technical field of cables is in urgent need of a novel shielding structure cable with simple production process, low cost and good flexibility.

Disclosure of Invention

An object of the present utility model is to provide a new technical solution for a new shielded cable.

According to a first aspect of the utility model, a novel shielding cable is provided, comprising at least one wire core, and an insulating layer, a shielding layer and an outer sheath which are sequentially wrapped outside the wire core, wherein the shielding layer comprises a cloth base layer wrapping the periphery of the insulating layer, and a first metal paint layer attached to one of the inner periphery of the cloth base layer and the outer periphery of the cloth base layer.

Optionally, the shielding layer further comprises a second metallic paint layer attached to the other of the inner periphery of the cloth base layer and the outer periphery of the cloth base layer.

Optionally, the first metallic paint layer impregnates and forms a second metallic paint layer through the woven seams of the cloth substrate.

Optionally, the first metallic paint layer is impregnated and connected with the second metallic paint layer through a first braiding gap of the cloth base layer; the second metallic paint layer is impregnated and connected to the first metallic paint layer through a second weave gap of the cloth substrate different from the first weave gap.

Optionally, the material of the first metallic paint layer and/or the second metallic paint layer is one of titanium metallic paint and chromium metallic paint.

Optionally, the material of the first metallic paint layer is different from the material of the second metallic paint layer.

Optionally, the radial thickness of the first metallic paint layer is 0.01mm-1.3mm; the radial thickness of the second metal paint layer is 0.01mm-1.3mm.

Optionally, at least one of the inner periphery of the shielding layer and the outer periphery of the shielding layer is provided with a soft fireproof sheath, and the soft fireproof sheath is a mica tape.

Optionally, a liquid cooling pipe is arranged between the shielding layer and the insulating layer, and a cooling medium flows in the liquid cooling pipe.

Optionally, the wire core is a flat conductor, and the flat conductor is formed by combining a plurality of metal wires.

Optionally, a wrapping layer is arranged on the periphery of the plurality of metal wires, and the wrapping layer is made of non-woven fabrics or mica tapes.

According to the novel shielding cable disclosed by the utility model, the novel shielding cable has the following beneficial effects:

1. because the cloth basic unit texture that the material is the non-woven fabrics is soft and first metallic paint layer has elasticity, so set up the shielding layer that metallic paint obtained in cloth basic unit outside, have better flexibility, the cable flexibility that has this shielding layer is better, and after the cable is buckled, can not influence the shielding effect of shielding layer.

2. The shielding net formed by the metal braiding layers is replaced by the cloth-based layer coated metal paint, so that the use of shielding net braiding equipment is reduced, the occupied area is small, the processing cost of the cable is reduced, the weight of the cable is lightened, the production flow is simplified, the production period is shortened, and meanwhile, the production cost of shielding layer raw materials is reduced.

3. Through setting up first metallic paint layer and second metallic paint layer at the inner periphery of cloth basic layer and outer Zhou Fenceng, this kind of setting has reached better signal shielding and electromagnetic interference's effect, and the flexibility is better simultaneously compared with the cable that has the shielding net that the wire woven.

4. The titanium metallic paint and the chromium metallic paint have good mechanical properties, moisture resistance and softening resistance. The cable using the same as a shield layer is excellent in mechanical strength. Moreover, the cable is not damaged after bending due to its flexibility and high temperature resistance, the shielding layer with the first and second metallic paint layers.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural diagram of a novel shielding cable according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a novel shielding cable according to a second embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a novel shielding cable according to a third embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a novel shielding cable according to a fourth embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a novel shielding cable according to a fifth embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a novel shielding cable according to a sixth embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a novel shielding cable according to a seventh embodiment of the present utility model;

fig. 8 is a schematic structural diagram of a novel shielding cable according to an eighth embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a novel shielding cable according to a ninth embodiment of the present utility model.

The figures are marked as follows:

1-a wire core; 11-wires; 2-an insulating layer; 3-a shielding layer; 31-cloth base layer; 32-a first metallic paint layer; 33-a second metallic paint layer; 4-an outer sheath; 5-a soft fire-resistant sheath; 6-a liquid cooling tube; 61-a liquid cooling channel; 7-wrapping.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

According to the novel shielding cable of the present disclosure, as shown in fig. 1 to 9, the novel shielding cable comprises at least one wire core 1, and an insulating layer 2, a shielding layer 3 and an outer sheath 4 which are sequentially wrapped outside the wire core 1, wherein the shielding layer 3 comprises a cloth base layer 31 wrapping the outer periphery of the insulating layer 2, and a first metallic paint layer 32 attached to one of the inner periphery of the cloth base layer 31 and the outer periphery of the cloth base layer 31.

The first metallic paint layer 32 is attached to the cloth base layer 31 to serve as the shielding layer 3, so that magnetic fields generated in the process of energizing the cable are prevented from interfering with normal use of other control systems.

Because the cloth-based layer 31 is soft in texture and the first metallic paint layer 32 is elastic, the shielding layer 3 obtained by attaching the metallic paint on the cloth-based layer 31 has better flexibility, and the cable with the shielding layer 3 has better flexibility and can not influence the shielding effect of the shielding layer 3 after the cable is bent.

The shielding layer 3 formed by coating the first metal paint layer 32 on the cloth-based layer 31 replaces a shielding net formed by a metal braiding layer, so that the use of shielding net braiding equipment is reduced, the occupied area of production equipment is small, the processing cost of cables is reduced, the weight of the cables is reduced, the production flow is simplified, the production period is shortened, and meanwhile, the production cost of the raw materials of the shielding layer 3 is reduced.

The wire core 11 may be circular in shape, flat or other irregular shape.

The cloth base 31 may be made of nonwoven fabric.

The first metallic paint layer 32 shown in fig. 1 is provided on the outer periphery of the cloth base layer 31. In practice, the first metallic paint layer 32 may also be disposed on the inner periphery of the cloth base layer 31. The case where the first metallic paint layer 32 is provided on the inner periphery of the cloth base layer 31 is not shown in the drawings.

In an embodiment of the novel shielding cable according to the present disclosure, as shown in fig. 2, the shielding layer 3 further includes a second metallic paint layer 33, and the second metallic paint layer 33 is attached to the other of the inner circumference of the cloth base layer 31 and the outer circumference of the cloth base layer 31.

In the second embodiment shown in fig. 2, in comparison with fig. 1, a second metallic paint layer 33 is provided on the inner periphery of the cloth base layer 31. Electromagnetic shielding mainly uses a shield body to prevent the influence of a high-frequency electromagnetic field, thereby effectively controlling the radiation propagation of electromagnetic waves from one region to another region. The basic principle is that a conductor material with a low resistance value is used for manufacturing the shielding body, and the electromagnetic wave is reflected on the surface of the shielding body, absorbed in the shielding body and lost in the transmission process to generate the shielding effect. By providing the first metallic paint layer 32 and the second metallic paint layer 33 on the inner periphery of the cloth base layer 31 and the outer periphery Zhou Fenceng, the arrangement achieves excellent signal shielding and electromagnetic interference preventing effects, and at the same time, the flexibility is better than that of a cable with a shielding net woven by metal wires.

Further, the first metallic paint layer 32 impregnates and forms the second metallic paint layer 33 through the braiding slits of the cloth base layer 31.

The second metallic paint layer 33 is formed on the other side of the cloth base layer 31 opposite to the first metallic paint layer 32 in the form of a woven slit impregnated through the cloth base layer 31. At this time, the first metallic paint layer 32 and the second metallic paint layer 33 may be made of the same material, and the first metallic paint layer 32 and the second metallic paint layer 33 disposed inside and outside the cloth base layer 31 are connected with each other, so as to enhance the shielding effect of the shielding layer 3 and prolong the service life of the shielding layer 3.

Further, the first metallic paint layer 32 is impregnated and connected with the second metallic paint layer 33 through the first weaving slit of the cloth base layer 31; the second metallic paint layer 33 is impregnated and connected to the first metallic paint layer 32 through a second weaving slit of the cloth base layer 31 different from the first weaving slit.

The first metal paint layer 32 is impregnated with the first weaving gap and is connected with the second metal paint layer 33, the second metal paint layer 33 is impregnated with the second weaving gap and is connected with the first metal paint layer 32, so that the production difficulty can be reduced, the radial thickness of the first metal paint layer 32 and the radial thickness of the second metal paint layer 33 are uniform, the occurrence of uneven thickness caused by the first metal paint layer 32 and the second metal paint layer 33 is avoided, and the shielding effect of the shielding layer 3 is influenced.

Specifically, the material of the first metallic paint layer 32 and/or the second metallic paint layer 33 is one of titanium metallic paint and chromium metallic paint.

The chromium metal paint has strong adhesive force, good surface smoothness and roundness, strong corrosion resistance, thin thickness and low cost. The titanium metal paint has the advantages of light weight, reduced whole line weight, no toxicity, environmental protection, excellent corrosion resistance, high temperature resistance, low temperature resistance and high mechanical strength. The titanium metallic paint and the chromium metallic paint are used as materials of the first metallic paint layer 32 and the second metallic paint layer 33 in the shielding layer 3, so that the obtained shielding layer 3 has better mechanical strength and the service life of the shielding layer is prolonged. The chromium metallic paint and the titanium metallic paint have excellent conductive performance, can effectively lead out interference current generated by electromagnetic interference, prevent magnetic fields generated by the cable in the electrifying process from interfering with normal use of other control systems, and simultaneously prevent signal transmission in the cable from being distorted by interference of other electromagnetic fields.

Specifically, the material of the first metallic paint layer 32 is different from the material of the second metallic paint layer 33. The first metallic paint layer 32 and the second metallic paint layer 33 which are made of two different materials enable the shielding layer 3 to have better mechanical properties, moisture resistance and softening resistance, and facilitate bending of the cable.

Specifically, the radial thickness of the first metallic paint layer 32 is 0.01mm-1.3mm; the radial thickness of the second metallic paint layer 33 is 0.01mm-1.3mm.

In order to verify the influence of the first metallic paint layer 32 and the second metallic paint layer 33 with different thicknesses on the shielding effect, the inventor selects the cable of the cable core 1, the insulating layer 2 and the base layer 31 with the same specification, only changes the thicknesses of the first metallic paint layer 32 and the second metallic paint layer 33, a series of sample pieces are manufactured, the shielding effect is tested respectively, and the experimental result is shown in the following table 1, wherein in the embodiment, the shielding performance value is greater than 40dB and is an ideal value.

The shielding performance value testing method comprises the following steps: the test instrument outputs a signal value (the value is the test value 2) to the wire core 11, and a detection device is arranged on the outer side of the metal paint layer and detects the signal value (the value is the test value 1). Mask performance value = test value 2-test value 1.

Table 1: influence of the thickness of the first metallic paint layer 32 and the second metallic paint layer 33 on the shielding properties

As can be seen from table 1 above, when the thicknesses of the first metallic paint layer 32 and the second metallic paint layer 33 are both smaller than 0.01mm, the shielding performance value of the shielding layer 3 is smaller than 40dB, which does not meet the ideal value requirement, the thicknesses of the first metallic paint layer 32 and the second metallic paint layer 33 are both larger than or equal to 0.01mm, the shielding performance value of the shielding layer 3 is larger than 40dB, which meets the ideal value requirement, and the trend is better, but when the thicknesses of the first metallic paint layer 32 and the second metallic paint layer 33 are both larger than 1.3mm, the shielding performance value is not improved significantly, and at this time, the thickness of the first metallic paint layer 32 or the second metallic paint layer 33 is increased again, which has no practical significance, and the cable outer diameter is increased and the production cost is increased, so the inventor sets the radial thickness of the first metallic paint layer 32 to be 0.01mm-1.3mm; the radial thickness of the second metallic paint layer 33 is 0.01mm-1.3mm.

In an embodiment of the novel shielding cable according to the present disclosure, at least one of the inner circumference of the shielding layer 3 and the outer circumference of the shielding layer 3 is provided with a soft fireproof sheath 5, and the soft fireproof sheath 5 is a mica tape.

In the third embodiment shown in fig. 3, a soft fire-proof sheath 5 is provided around the outer periphery of the shielding layer 3, compared with fig. 2. In actual production, the soft fireproof sheath 5 may be provided on the inner periphery of the shielding layer 3, or as shown in fig. 5, the soft fireproof sheath 5 may be provided on the inner periphery of the shielding layer 3 and the outer periphery of the shielding layer 3, respectively. The soft fireproof sheath 5 can protect the first metal paint layer 32 or the second metal paint layer 33 adjacent to the soft fireproof sheath, so that the first metal paint layer 32 and the second metal paint layer 33 are prevented from being scratched, and the shielding effect of the shielding layer 3 is affected; the use of mica tape as the soft fire-protection sheath 5 protects the shielding layer 3 and at the same time prevents the cable from burning.

Specifically, the mica tape comprises mica base paper and glass fiber cloth adhered to two side surfaces of the mica base paper.

The glass fiber cloth has weatherability. Has non-adhesive property, and is not easy to adhere to any substance. The first metallic paint layer 32 and the second metallic paint layer 33 in the shielding layer 3 can be effectively protected with a low friction coefficient. The cable has high insulating property, ultraviolet resistance, static resistance, high strength and good mechanical properties, is used in the cable, and can prolong the service life of the cable.

The mica base paper is a fireproof insulating material, is an excellent insulating product, has excellent high temperature resistance and combustion resistance, can prevent cables from being burnt, and has a flame-retardant effect.

The mica tape formed by bonding the glass fiber cloth on the two sides of the mica base paper through the silicone adhesive has better fire resistance and high temperature resistance, high mechanical property and excellent softness.

In an embodiment of the novel shielded cable according to the present disclosure, a liquid cooling tube 6 is disposed between the shielding layer 3 and the insulating layer 2, and a cooling medium flows through the liquid cooling tube 6.

In the fourth embodiment shown in fig. 4, compared with fig. 3, a liquid cooling pipe 6 is provided between the second metallic paint layer 33 and the insulating layer 2, a liquid cooling passage 61 is formed between the liquid cooling pipe 6 and the insulating layer 2, and a cooling medium is circulated in the liquid cooling passage 61. By flowing a cooling medium in the liquid cooling pipe 6, heat generated in the working process of the wire core 1 can be taken away rapidly, and the current carrying capacity of the wire core 1 is improved.

In the fifth embodiment shown in fig. 5, in comparison with fig. 4, a soft fire-proof jacket 5 is provided between the second metallic paint layer 33 and the liquid-cooled tube 6.

The ninth embodiment shown in fig. 9 has two cores 1 arranged side by side, compared to fig. 5.

The liquid cooling passage 61 may be provided with a support structure, not shown in the drawings, which is provided to extend in the wire axis direction and separates the liquid cooling tube 6 and the insulating layer 2 in the radial direction.

In an embodiment of the novel shielded cable according to the present disclosure, the core 1 is a flat conductor, and the flat conductor is formed by combining a plurality of wires 11.

The sixth embodiment shown in fig. 6 is to change the wire core 1 from a circular conductor to a flat conductor, compared to fig. 4. When the wire core 1 is a flat conductor, if a metal braid layer is used as the shielding layer 3, the shielding effect is defective, particularly, the shielding effect at the bending part of the cable is greatly reduced, the signal transmission in the control element around the bending part is affected, and the processing is not easy; through setting up first metallic paint layer 32 and second metallic paint layer 33 in the periphery or the inner periphery of cloth basic layer 31, can reduce shielding layer 3's the production degree of difficulty, and shielding in the aspect of the cable periphery is whole, even cable kink also can keep very good shielding effect, compare in shielding layer 3 that metallic braid formed, shielding effect is better.

When the flat conductor is used as a wire, the wiring space can be saved, and the flexibility of the flat conductor made of a plurality of metal wires 11 is better.

In contrast to fig. 6, the seventh embodiment shown in fig. 7 consists of a plurality of wires 11. The flat conductor can be composed of a plurality of metal wires 11 with square cross sections as shown in fig. 7, or a plurality of metal wires 11 with round cross sections as not shown in the figure, so that the flexibility of the flat conductor can be increased, the flat conductor can be bent conveniently to form a certain radian, the processing difficulty is reduced, and the cable can be assembled to a vehicle body conveniently.

Specifically, the periphery of the flat conductor is provided with a wrapping layer 7, and the wrapping layer 7 is made of non-woven fabrics or mica tapes.

In the eighth embodiment shown in fig. 8, compared with fig. 7, a wrap 7 is provided around the outer periphery of the wire 11. The wrapping layer 7 made of non-woven fabrics or mica tapes is arranged on the periphery of the metal wire 11, so that the difficulty of extruding the insulating layer 2 can be reduced, and the flexibility of the cable is not affected.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. The utility model provides a novel shielding cable, its characterized in that includes at least one sinle silk, and parcel in proper order insulating layer, shielding layer and the oversheath in the sinle silk outside, the shielding layer is including the cladding the cloth basic unit of insulating layer periphery, and attached the inner periphery of cloth basic unit with the first metallic paint layer of one of the periphery of cloth basic unit.

2. The novel shielded cable of claim 1, wherein the shielding layer further comprises a second metallic paint layer attached to the other of the inner periphery of the base layer and the outer periphery of the base layer.

3. The novel shielded cable of claim 1, wherein the first metallic paint layer impregnates and forms a second metallic paint layer through the woven seam of the cloth-based layer.

4. The novel shielded cable of claim 2, wherein the first metallic paint layer is impregnated and connected to the second metallic paint layer through a first woven slit of the cloth-based layer; the second metallic paint layer is impregnated and connected to the first metallic paint layer through a second weave gap of the cloth substrate different from the first weave gap.

5. The novel shielded cable according to claim 2, wherein the first metallic paint layer and/or the second metallic paint layer is one of titanium metallic paint and chromium metallic paint.

6. The novel shielded cable of claim 5, wherein the first metallic paint layer is a different material than the second metallic paint layer.

7. The novel shielded cable of claim 2, wherein the radial thickness of the first metallic paint layer is 0.01mm-1.3mm; the radial thickness of the second metal paint layer is 0.01mm-1.3mm.

8. The novel shielded cable of claim 1, wherein at least one of an inner circumference of the shielding layer and an outer circumference of the shielding layer is provided with a soft fire-resistant sheath, the soft fire-resistant sheath being a mica tape.

9. The novel shielded cable of claim 1, wherein a liquid cooling tube is disposed between the shielding layer and the insulating layer, and a cooling medium is circulated in the liquid cooling tube.

10. The novel shielded cable of claim 1, wherein the core is a flat conductor formed from a combination of a plurality of wires.

11. The novel shielded cable according to claim 10, wherein a wrapping layer is provided on the outer periphery of the plurality of wires, and the wrapping layer is made of non-woven fabrics or mica tapes.