CN215220355U

CN215220355U - Anti-interference cable

Info

Publication number: CN215220355U
Application number: CN202121226359.2U
Authority: CN
Inventors: 陈喜东; 黄应敏; 胡超强; 王袁睿; 冯潇; 邹科敏; 邹汉锋; 许翠珊; 杨航; 胡青云; 冯泽华; 梁志豪; 邵源鹏; 高伟光; 严伟聪; 徐兆良; 游仿群; 徐加健; 徐秋燕; 陆松记
Original assignee: Guangzhou Panyu Cable Group Co Ltd
Current assignee: Guangzhou Panyu Cable Group Co Ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-17
Anticipated expiration: 2031-06-02

Abstract

The embodiment of the utility model discloses anti-interference cable, include: the cable comprises a plurality of conductors, an insulating layer, a shielding layer, an outer sheath and a supporting piece, wherein the shielding layer comprises a composite metal layer and a metal braid; support piece is located the accommodation space of combined metal layer, support piece includes the central body, be provided with the bellying on the central body, the bellying includes connecting rod and arc piece, the first end of connecting rod is connected with the central body, the centre of a circle side surface of arc piece is connected with connecting rod second end, and the surface of arc piece and the internal surface of accommodation space contact, the bellying divides the accommodation space into a plurality of holding regions, the conductor is located the holding region, the surface covering of conductor has the insulating layer, the surface covering of combined metal layer has the metallic braid, the metallic braid is surrounded by the oversheath layer, and be provided with the bolster between metallic braid and the oversheath layer. The technical problem that a cable of a small base station is easily interfered by harmonic waves of 5G communication equipment is solved.

Description

Anti-interference cable

Technical Field

The embodiment of the application relates to the field of cables, in particular to an anti-interference cable.

Background

Currently, with the continuous development of communication technology, society is advancing the 5G era. Compared with the 4G technology, the general trend of the 5G technology is that the mobile radio frequency device is closer to the end user, so that the coverage area is improved, and the data transmission speed is increased. However, due to the construction limitation of the traditional macro base station, the solution for improving the coverage is only to deploy more small base stations, so the 5G technology will drive the growth of the small base stations, and the small base stations will appear around human beings like bamboo shoots in spring after rain.

In the 5G technology, the 5G communication device is likely to support multiple systems such as LTE and 5G NR at the same time. However, under the condition that the LTE low frequency band and the 5G 3.5GHz band operate simultaneously, mutual interference may occur in many frequency band combinations, which may cause sensitivity reduction, and even cause that some frequency band combinations cannot be applied in the network. Under the condition that 5G communication equipment has various harmonic interferences, a small base station is influenced more or less, and how to ensure that a cable of the small base station is not influenced by the harmonic interferences is a technical problem to be solved at present.

Disclosure of Invention

The embodiment of the utility model provides an anti-interference cable through set up clad metal layer and metallic braid in the shielding layer of cable, has improved the anti interference ability of cable, has solved the cable of small-size basic station and has received 5G communication equipment's harmonic interference's technical problem easily.

The embodiment of the utility model provides an anti-interference cable, include: the cable comprises a plurality of conductors, an insulating layer, a shielding layer, an outer sheath and a supporting piece, wherein the shielding layer comprises a composite metal layer and a metal braid;

the utility model discloses a composite metal layer, including support piece, connecting rod, central body, the centre of a circle side surface of arc piece, the support piece is located in composite metal layer's accommodation space, support piece includes the central body, be provided with the bellying on the central body, the bellying includes connecting rod and arc piece, the first end of connecting rod with the central body is connected, the centre of a circle side surface of arc piece with the connection of connecting rod second end, just the surface of arc piece with the internal surface of accommodation space contacts, the bellying will the accommodation space divides into a plurality of accommodation regions, the conductor is located in the accommodation region, the surface cover of conductor has the insulating layer, composite metal layer's surface covers has the metallic braid, the metallic braid quilt the oversheath layer surrounds, just the metallic braid with be provided with the bolster between the oversheath layer.

Preferably, the metal braid is a tin-plated metal braid.

Preferably, the metal braiding density of the tin-plated metal braid is 90%.

Preferably, the composite metal layer is a composite metal foil layer.

Preferably, the overlapping ratio of the composite metal foils of the composite metal foil layer is greater than or equal to 20%.

Preferably, the conductor is a soft copper stranded wire.

Preferably, the conductor is a soft copper stranded wire in a bundle stranded form.

Preferably, the insulating layer is a flexible PVC layer.

Preferably, the outer sheath layer is a soft PVC layer.

Preferably, the bolster includes spheroid, spring and hollow sphere, the spheroid with the spring is located the clean internal sphere, the first end of spring with the spheroid is connected, the second end of spring with hollow sphere's internal surface is connected.

The embodiment of the utility model provides an anti-interference cable, include: the cable comprises a plurality of conductors, an insulating layer, a shielding layer, an outer sheath and a supporting piece, wherein the shielding layer comprises a composite metal layer and a metal braid; the support piece is located the accommodation space of clad metal layer, is provided with the bellying on the support piece, and the bellying divides into a plurality of holding regions with the accommodation space, and the conductor is located the holding region, and the surface covering of conductor has the insulating layer, and the surface covering of clad metal layer has the metallic braid, and the metallic braid is surrounded by the oversheath layer, and is provided with the bolster between metallic braid and the oversheath layer. The embodiment of the utility model provides a through set up clad metal layer and metallic braid in the shielding layer of cable, the outside unnecessary electromagnetic wave of filtering can be effectively, improve the cable and resist external electromagnetic interference's ability and the cable ability of radiating electromagnetic interference outward itself, and metallic braid can shield the cable completely, the ground connection is convenient that continues, can not produce the potential difference when high frequency transmission, can not cause secondary interference to the cable, the cable of having solved the middle-size and small-size basic station of prior art receives 5G communication equipment's harmonic interference's technical problem easily.

Drawings

Fig. 1 is a schematic structural diagram of an anti-interference cable according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another anti-interference cable according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a supporting member according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a buffer according to an embodiment of the present invention.

The reference numbers in the figures are: 1-conductor, 2-insulating layer, 3-composite metal layer, 4-metal braid, 5-outer sheath, 6-support piece, 7-buffer piece, 8-central body, 9-connecting rod, 10-arc piece, 11-sphere, 12-spring, 13-hollow sphere.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad embodiments of the invention. It should be further noted that, for convenience of description, only some structures, but not all structures, related to the embodiments of the present invention are shown in the drawings.

The embodiment of the utility model provides an anti jamming cable mainly is to 10kV medium voltage cable and 1kV and following voltage class's low tension cable, and when anti jamming cable was 1kV and following voltage class's low tension cable, anti jamming cable's structure is as shown in figure 1, and figure 1 is the utility model provides a pair of anti jamming cable's that provides structure schematic diagram. The embodiment of the utility model provides an anti-interference cable, include: four conductors 1, insulating layer 2, shielding layer, oversheath 5 and support piece 6, the shielding layer includes clad metal layer 3 and metal braid 4. When the anti-interference cable is a 10kV medium-voltage cable, the structure of the anti-interference cable is shown in fig. 2, and in fig. 2, the number of the conductors 1 is 3.

Support piece 6 is located the accommodation space of combined metal layer 3, as shown in fig. 3, support piece 6 includes central body 8, be provided with the bellying on the central body 8, the bellying includes connecting rod 9 and arc 10, the first end of connecting rod 9 is connected with central body 8, the centre of a circle side surface of arc 10 is connected with connecting rod 9 second end, and the surface of arc 10 and the internal surface of accommodation space contact, the bellying divides the accommodation space into a plurality of accommodation regions, conductor 1 is located the accommodation region, the surface of conductor 1 covers there is insulating layer 2, the surface of combined metal layer 3 covers there is metallic braid 4, metallic braid 4 is surrounded by 5 layers of oversheath, and be provided with bolster 7 between metallic braid 4 and the 5 layers of oversheath. It is understood that the number of the supporting members 7 can be set according to actual requirements, and the number of the supporting members 7 is not limited in the present embodiment.

In this embodiment, be provided with support piece 6 in the accommodation space that clad metal layer 3 formed, be provided with the bellying on the central body 8, the bellying includes connecting rod 9 and arc 10, the first end of connecting rod 9 is connected with central body 8, the centre of a circle side surface of arc 10 is connected with connecting rod 9 second end, and the surface of arc 10 and the internal surface of accommodation space contact, can play the effect of supporting the interior content structure of cable, the inside steadiness of cable, crushing resistance and shock resistance have been improved. When the cable is subjected to large impact and extrusion, the supporting piece 6 can resist certain pressure, and the stability of the internal structure of the cable is ensured. In this embodiment, the supporting member 6 is made of a high temperature resistant rubber material, so that the flexibility is ensured and a certain support can be provided for the cable. It is understood that the number of the convex portions may be set according to actual needs, and the number of the convex portions is not limited in the present embodiment.

In this embodiment, the accommodating space is divided into a plurality of accommodating areas by the protruding portions, and the conductors 1 are arranged in the accommodating areas, and one conductor 1 corresponds to one accommodating area, so that when the cable is subjected to large impact or vibration, the conductors 1 inside the cable do not undergo large displacement, and the shock resistance and stability of the cable are improved. In the present embodiment, the number of the accommodation regions is not limited.

In the implementation, the shielding layer is set as the composite metal layer 3 and the metal braid layer 4, the metal braid layer 4 covers the outer surface of the composite metal layer 3, the composite metal layer 3 is formed by compounding metal and a plastic film, the composite metal can exert respective advantages of component materials, optimal allocation of the component material resources is realized, precious metal materials are saved, and performance requirements which cannot be met by single metal are realized. The conventional metal belt is easy to break after being bent, the composite metal layer 3 is high in flexibility and not easy to break, and the interference of potential difference generated on the shielding layer due to the breakage of the metal belt to a cable can be avoided. Still be provided with metallic braid 4 outside the combined metal layer 3, metallic braid 4 has metal material to compile, can shield the cable completely, the ground connection is convenient that continues, through set up combined metal layer 3 and metallic braid 4 in the cable in this embodiment, thereby can filter outside unnecessary electromagnetic wave effectively, receive outside electromagnetic interference invasion back when the cable, can get rid of electromagnetic interference through shielding ground connection, improve the external ability of resisting electromagnetic interference of cable and the outside ability of radiating electromagnetic interference of cable itself.

On the basis of the above embodiment, the metal braid 4 is the tin-plated metal braid 4, the metal braid density of the tin-plated metal braid 4 is 90%, the composite metal layer 3 is the composite metal foil layer, and the overlapping rate of the composite metal foil layer is greater than or equal to 20%. The tinned metal braid layer 4 woven by the tinned metal has strong grounding capability and good oxidation resistance, and is very suitable for the working environment of the shielding layer. The composite metal foil layer has strong flexibility and excellent tension resistance and voltage resistance. The metal weaving density of the tinned metal weaving layer 4 is 90%, the overlapping rate of the composite metal foil layer is greater than or equal to 20%, the capability of the shielding layer for resisting external electromagnetic interference can be improved, and the shielding performance of the shielding layer for the electromagnetic interference is ensured.

On the basis of the above embodiment, the conductor 1 is a soft copper stranded wire, and the conductor 1 is a soft copper stranded wire in a bundle-stranded form.

Because the anti-interference cable need buckle in the application, it is very high to cable bending property requirement, therefore conductor 1 adopts the bundle form to improve the compliance of cable, secondly, conductor 1 of cable adopts soft copper conductor 1, when guaranteeing conductor 1 to the transmission ability of electric power, improves the compliance of cable.

On the basis of the above embodiment, the insulating layer 2 is a soft PVC layer, and the outer sheath 5 is a soft PVC layer. In order to ensure the safe operation of the cable under the rated voltage and prolong the service life of the cable conductor 1 at the long-term allowable working temperature, the insulating layer 2 and the outer sheath 5 of the cable are made of flexible PVC cable materials, so that the dielectric property and the water resistance of the cable are ensured, and the requirements of a power frequency voltage test and a flexible swing test are met.

On the basis of the above embodiment, as shown in fig. 4, the buffer 7 includes a ball 11, a spring 12, and a hollow ball 13, the ball 11 and the spring 12 are located in the hollow ball 13, a first end of the spring 12 is connected to the ball 11, and a second end of the spring 12 is connected to an inner surface of the hollow ball 13.

In this embodiment, the number of springs in the buffer 7 can be set according to actual needs. The ball 11 and the hollow ball 13 can limit the position of the spring 12 to avoid the position deviation of the spring 12, and when the buffer 7 is pressed or impacted, the spring 12 inside the buffer 7 can absorb the kinetic energy caused by the pressing or impacting, thereby improving the vibration resistance and the pressure resistance of the cable. In this embodiment, the ball 11 and the hollow ball 13 may be made of a high temperature resistant rubber material. It is understood that, in the present embodiment, the number of the buffering members 7 may be set according to actual needs, and the number of the buffering members 7 is not particularly limited in the present embodiment.

Above-mentioned, the embodiment of the utility model provides a through set up clad metal layer and metallic braid in the shielding layer of cable, can filter outside unnecessary electromagnetic wave effectively, improve the cable and resist external electromagnetic interference's ability and the cable ability of radiating electromagnetic interference outward itself, and metallic braid can shield the cable completely, ground connection is convenient in succession, can not produce the potential difference when high frequency transmission, can not cause secondary interference to the cable, the cable of having solved the middle-size and small-size basic station of prior art receives 5G communication equipment's harmonic interference's technical problem easily.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the embodiments of the present invention are not limited to the particular embodiments described herein, but are capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the embodiments of the invention. Therefore, although the embodiments of the present invention have been described in greater detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments can be included without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

1. An interference resistant cable, comprising: the cable comprises a plurality of conductors, an insulating layer, a shielding layer, an outer sheath and a supporting piece, wherein the shielding layer comprises a composite metal layer and a metal braid;

2. The tamper resistant cable of claim 1, wherein said metal braid is a tin plated metal braid.

3. The tamper resistant cable of claim 2, wherein said tinned metal braid has a metal braid density of 90%.

4. The antijam cable of claim 3, wherein said composite metal layer is a composite metal foil layer.

5. The antijam cable of claim 4, wherein said composite metal foil layer has a composite metal foil overlap of greater than or equal to 20%.

6. The antijam cable of claim 1, wherein said conductors are soft copper strands.

7. The antijam cable of claim 5, wherein said conductors are soft copper strands in stranded form.

8. An interference free cable according to any one of claims 1 to 7 wherein the insulating layer is a flexible PVC layer.

9. An anti-interference cable according to any one of claims 1 to 7, wherein the outer sheath layer is a flexible PVC layer.

10. The antijam cable of claim 1, wherein said buffer includes a sphere, a spring, and a hollow sphere, said sphere and said spring being located within said hollow sphere, a first end of said spring being connected to said sphere, and a second end of said spring being connected to an inner surface of said hollow sphere.