CN114188086B

CN114188086B - Anti-interference HDMI cable

Info

Publication number: CN114188086B
Application number: CN202010967485.7A
Authority: CN
Inventors: 李小华; 王小明; 田箐楠; 喻富平
Original assignee: Anfu Yexiang Precision Electronics Co ltd
Current assignee: Anfu Yexiang Precision Electronics Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2023-09-15
Anticipated expiration: 2040-09-15
Also published as: CN114188086A

Abstract

The invention relates to an anti-interference HDMI cable, which comprises a composite protective layer, a plurality of core wires and electronic wires, wherein a cross-shaped elastic frame is arranged in the composite protective layer, a composite shielding layer which is coaxially arranged with the composite protective layer is arranged in the composite protective layer, the plurality of electronic wires are arranged in the composite shielding layer, a foaming layer is filled between the composite shielding layer and the composite protective layer, the plurality of core wires are uniformly arranged in the foaming layer, and an epoxy resin layer is filled between the plurality of electronic wires. The HDMI cable is composed of a plurality of core wires and an electronic wire, and the composite shielding layer on the outer side of the electronic wire not only can shield interference of external electromagnetic signals, but also can improve the anti-interference capability of the cable. Meanwhile, the core wire is arranged between the composite protective layer and the composite shielding layer, the composite shielding layer avoids the mutual influence of the core wire and the electronic wire during working, and the electrical stability is improved. The elastic framework improves the flexibility of the cable on the basis of ensuring the structural strength of the cable.

Description

Anti-interference HDMI cable

Technical Field

The invention relates to the technical field of cables, in particular to an anti-interference HDMI cable.

Background

HDMI is a fully digital interface used in both the consumer electronics and PC fields. The wireless communication system can transmit uncompressed audio signals and video signals, and the audio signals and the video signals are transmitted by the same cable, so that the number of interface cables is greatly simplified, and the wireless communication system is popularized in household appliances and PCs.

The current commonly used HDMI cable is composed of an insulating shell and a plurality of strands of sub-wires wrapped by the shell, wherein a plurality of single core wires are arranged among the plurality of strands of sub-wires, the sub-wires are generally multi-core wires, the multi-core wires of different sub-wires are composed of core wires with different colors, such as red-white, green-white, blue-white, brown-white, yellow-white and the like, and aluminum foils are wrapped outside the core wires. In practical use, the disadvantage is found that the electrical properties such as impedance and bandwidth of different core wires are different, so that the electrical properties of the whole HDMI cable are not stable enough. And the outside of the core wire is only wrapped with one layer of insulating shell, so that the core wire is easily influenced by external impact force and electromagnetic signals when transmitting signals, and the service life of the HDMI cable is reduced.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide an anti-interference HDMI cable which has the effects of stable electrical property and reliable transmission during use.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides an anti-interference HDMI cable, includes compound protective layer, many heart yearns and electron line, the inside of compound protective layer is provided with the elastic framework that is "cross" font, be provided with in the compound protective layer with the coaxial compound shielding layer that sets up of compound protective layer, many the electron line sets up in the compound shielding layer, compound shielding layer with it has the foaming layer to fill between the compound protective layer, many the heart yearn evenly sets up in the foaming layer, many it has the epoxy layer to fill between the electron line.

Through the technical scheme, the HDMI cable is composed of the multi-strand core wires and the electronic wires, and the composite shielding layer on the outer side of the electronic wires can shield interference of external electromagnetic signals, so that the anti-interference capability of the cable is improved. Meanwhile, the core wire is arranged between the composite protective layer and the composite shielding layer, the composite shielding layer avoids the mutual influence of the core wire and the electronic wire during working, and the electrical stability is improved. The elastic framework improves the flexibility of the cable on the basis of ensuring the structural strength of the cable. The core wire is filled in the foaming layer, so that the core wire is not easy to damage when being subjected to external impact force, and meanwhile, the foaming layer has good heat insulation and waterproof performance, and the anti-interference capability of the core wire is further improved. The good chemical resistance and electrical insulation of the epoxy resin enable a plurality of electronic wires not to generate electromagnetic influence, so that the tightness of the electronic wires is improved, and meanwhile, the service life is prolonged. In conclusion, the HDMI cable has extremely high anti-interference capability and has extremely high economic popularization value.

The present invention may be further configured in a preferred example to: the composite protective layer comprises a waterproof protective film, an anti-electromagnetic interference woven layer and a plastic shell, wherein the elastic frame is arranged inside the plastic shell and fixedly connected with the inner wall of the plastic shell, the anti-electromagnetic interference woven layer is wrapped on the outer wall of the plastic shell, and the waterproof protective film is fixedly connected with one surface of the anti-electromagnetic interference woven layer, which is far away from the plastic shell.

Through the technical scheme, the waterproof protection film is arranged on the outermost side of the HDMI cable, so that the cable can adapt to various severe environments, and the waterproof performance is improved. The anti-electromagnetic interference braid and the plastic shell improve the structural strength of the cable, and meanwhile, the interference of external electromagnetic signals and impact force is reduced to a great extent, so that the signal transmission stability of the HDMI cable is realized, the anti-interference capability is strong, the attenuation loss is small, and the transmitted audio and video signals are clearer.

The present invention may be further configured in a preferred example to: the composite shielding layer comprises a copper foil layer and an insulation base layer, wherein the epoxy resin layer is filled in the insulation base layer, and the copper foil layer is fixed on the outer side wall of the insulation base layer.

Through the technical scheme, the copper foil layer and the insulating base layer enable electromagnetic waves of the core wire and external electromagnetic signals to be difficult to conduct on the electronic wire, and the working stability and the anti-interference capability of the electronic wire are improved.

The present invention may be further configured in a preferred example to: the foaming layer is internally provided with a grounding wire, the grounding wire is connected with a conducting wire, and two ends of the conducting wire are respectively connected with the copper foil layer and the electromagnetic interference resistant woven layer.

Through the technical scheme, electromagnetic interference signals on the copper foil layer and the electromagnetic interference resistant woven layer can be conducted on the grounding wire through the lead wire, and are led into the ground through the grounding wire. Interference signals are prevented from entering the inner layer, loss of transmission signals is reduced, and signal transmission capacity of HDMI is improved.

The present invention may be further configured in a preferred example to: the core wires are eight, the electronic wires are four, the elastic frame equally divides the interior of the plastic shell into four areas, and each area is provided with one electronic wire and two core wires.

Through above-mentioned technical scheme, foaming layer and epoxy layer set up between elastic frame, when elastic frame received external force, can play certain cushioning effect, reduce elastic frame's deformability, improve life. The plurality of electronic wires and the core wires are reasonably arranged in the elastic frame, so that the size of the cable can be effectively reduced, the plurality of core wires and the core wires of the same type can be cut off from the same raw material, the expenditure and the loss for raw material selection are reduced, and the production cost is saved.

The present invention may be further configured in a preferred example to: the core wire comprises a signal wire, and a annealed copper wire, an extruded plastic sheath and a shielding base layer which are sequentially wrapped on the outer side of the signal wire.

Through above-mentioned technical scheme, annealed copper line, extrusion plastics sheath and shielding basic unit parcel are in the outside of signal line, reduce the crosstalk between the audio and video signal between a plurality of heart yearns, reduce the production of error rate, and interference killing feature is strong.

In summary, the present invention includes at least one of the following beneficial technical effects:

1. the HDMI cable is composed of a plurality of core wires and an electronic wire, and the composite shielding layer on the outer side of the electronic wire not only can shield interference of external electromagnetic signals, but also can improve the anti-interference capability of the cable. Meanwhile, the core wire is arranged between the composite protective layer and the composite shielding layer, the composite shielding layer avoids the mutual influence of the core wire and the electronic wire during working, and the electrical stability is improved. The elastic framework improves the flexibility of the cable on the basis of ensuring the structural strength of the cable.

The core wire is filled in the foaming layer, so that the core wire is not easy to damage when being subjected to external impact force, and meanwhile, the foaming layer has good heat insulation and waterproof performance, and the anti-interference capability of the core wire is further improved. The good chemical resistance and electrical insulation of the epoxy resin enable a plurality of electronic wires not to generate electromagnetic influence, so that the tightness of the electronic wires is improved, and meanwhile, the service life is prolonged. In conclusion, the HDMI cable has extremely high anti-interference capability and has extremely high economic popularization value.

2. The waterproof protection film is arranged on the outermost side of the HDMI cable, so that the cable can adapt to various severe environments, and the waterproof performance is improved. The anti-electromagnetic interference braid and the plastic shell improve the structural strength of the cable, and meanwhile, the interference of external electromagnetic signals and impact force is reduced to a great extent, so that the signal transmission stability of the HDMI cable is realized, the anti-interference capability is strong, the attenuation loss is small, and the transmitted audio and video signals are clearer.

3. Electromagnetic interference signals on the copper foil layer and the electromagnetic interference resistant braid layer can be conducted on the grounding wire through the lead wire, and are led into the ground through the grounding wire. Interference signals are prevented from entering the inner layer, loss of transmission signals is reduced, and signal transmission capacity of HDMI is improved.

Drawings

Fig. 1 is an overall cross-sectional view of the present invention.

Reference numerals: 1. a composite protective layer; 11. a waterproof protective film; 12. an electromagnetic interference resistant braid; 13. a plastic housing; 2. a core wire; 21. a signal line; 22. annealed copper wire; 23. extruding a plastic sheath; 24. a shielding base layer; 3. an electron beam; 31. an epoxy resin layer; 4. an elastic frame; 5. a composite shielding layer; 51. a copper foil layer; 52. an insulation base layer; 6. a foaming layer; 61. a ground wire; 62. conductive wires.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, an anti-interference HDMI cable disclosed by the present invention comprises a composite protective layer 1, a plurality of core wires 2 and an electronic wire 3, wherein an elastic frame 4 in a cross shape is arranged in the composite protective layer 1, and a composite shielding layer 5 coaxially arranged with the composite protective layer 1 is arranged in the composite protective layer 1. The plurality of electron lines 3 are arranged in the composite shielding layer 5, a foaming layer 6 is filled between the composite shielding layer 5 and the composite protective layer 1, the plurality of core wires 2 are uniformly arranged in the foaming layer 6, and an epoxy resin layer 31 is filled between the plurality of electron lines 3.

In the present embodiment, the core wires 2 are configured in eight, the electron wires 3 are configured in four, and the elastic frame 4 equally divides the inside of the plastic housing 13 into four areas, each of which is provided with one electron wire 3 and two core wires 2. The foaming layer 6 and the epoxy resin layer 31 are arranged between the elastic frames 4, and when the elastic frames 4 receive external force, a certain buffer effect can be achieved, so that the deformation degree of the elastic frames 4 is reduced, and the service life is prolonged. The plurality of electronic wires 3 and the core wires 2 are reasonably arranged in the elastic frame 4, so that the cable size can be effectively reduced, the plurality of core wires 2 and the electronic wires 3 of the same type can be cut off from the same raw material, the expenditure and loss for raw material selection are reduced, and the production cost is saved.

Referring to fig. 1, the composite protective layer 1 includes a waterproof protective film 11, an anti-electromagnetic interference braid 12 and a plastic housing 13, the elastic frame 4 is disposed inside the plastic housing 13 and fixedly connected with an inner wall of the plastic housing 13, the anti-electromagnetic interference braid 12 is wrapped on an outer wall of the plastic housing 13, and the waterproof protective film 11 is fixedly connected with one side of the anti-electromagnetic interference braid 12 far away from the plastic housing 13.

The waterproof protective film 11 is provided at the outermost side of the HDMI cable, so that the cable can be adapted to various severe environments, and the waterproof property is improved. The anti-electromagnetic interference braid 12 and the plastic shell 13 improve the structural strength of the cable, and meanwhile, the interference of external electromagnetic signals and impact force is reduced to a great extent, so that the signal transmission stability of the HDMI cable is realized, the anti-interference capability is strong, the attenuation loss is small, and the transmitted audio and video signals are clearer.

Wherein the composite shielding layer 5 includes a copper foil layer 51 and an insulation base layer 52, the epoxy resin layer 31 is filled inside the insulation base layer 52, and the copper foil layer 51 is fixed on the outer sidewall of the insulation base layer 52. The copper foil layer 51 and the insulating base layer 52 make it difficult for electromagnetic waves of the core wire 2 and external electromagnetic signals to be conducted on the electronic wire 3, so that the working stability and the anti-interference capability of the electronic wire 3 are improved.

Referring to fig. 1, a ground wire 61 is provided in the foam layer 6, a conductive wire 62 is connected to the ground wire 61, and both ends of the conductive wire 62 are connected to the copper foil layer 51 and the electromagnetic interference shielding braid 12, respectively. Electromagnetic interference signals on the copper foil layer 51 and the electromagnetic interference resistant braid 12 can be conducted to the ground wire 61 via a wire, and led to the ground through the ground wire 61. Interference signals are prevented from entering the inner layer, loss of transmission signals is reduced, and signal transmission capacity of HDMI is improved.

Further, the core wire 2 includes a signal wire 21, a annealed copper wire 22, an extruded plastic sheath 23, and a shield base layer 24, which are sequentially wrapped outside the signal wire 21. The annealed copper wires 22, the extruded plastic sheaths 23 and the shielding base layer 24 are wrapped on the outer sides of the signal wires 21, so that crosstalk between audio and video signals among the plurality of core wires 2 is reduced, error rate is reduced, and the anti-interference capability is high.

The implementation principle of the embodiment is as follows: the HDMI cable is composed of the multi-strand core wires 2 and the electronic wires 3, and the composite shielding layer 5 on the outer side of the electronic wires 3 not only can shield interference of external electromagnetic signals, but also can improve the anti-interference capability of the cable. Meanwhile, the core wire 2 is arranged between the composite protective layer 1 and the composite shielding layer 5, and the composite shielding layer 5 avoids the mutual influence between the core wire 2 and the electronic wire 3 during working, so that the electrical stability is improved.

The elastic frame 4 improves the flexibility of the cable on the basis of ensuring the structural strength of the cable. The core wire 2 is filled in the foaming layer 6, so that the core wire 2 is not easy to damage when being subjected to external impact force, and meanwhile, the foaming layer 6 has good heat insulation and waterproof performance, and the anti-interference capability of the core wire 2 is further improved.

The good chemical resistance and electrical insulation of the epoxy resin enable the plurality of electronic wires 3 not to generate electromagnetic influence, so that the tightness of the electronic wires 3 is improved, and meanwhile, the service life is prolonged. In conclusion, the HDMI cable has extremely high anti-interference capability and has extremely high economic popularization value.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.

Claims

1. An anti-interference HDMI cable which is characterized in that: the novel electronic wire comprises a composite protective layer (1), a plurality of core wires (2) and electronic wires (3), wherein a cross-shaped elastic frame (4) is arranged in the composite protective layer (1), a composite shielding layer (5) which is coaxially arranged with the composite protective layer (1) is arranged in the composite protective layer (1), a plurality of the electronic wires (3) are arranged in the composite shielding layer (5), a foaming layer (6) is filled between the composite shielding layer (5) and the composite protective layer (1), a plurality of the core wires (2) are uniformly arranged in the foaming layer (6), and an epoxy resin layer (31) is filled between the plurality of the electronic wires (3); the composite protective layer (1) comprises a waterproof protective film (11), an anti-electromagnetic interference woven layer (12) and a plastic shell (13), wherein the elastic frame (4) is arranged in the plastic shell (13) and fixedly connected with the inner wall of the plastic shell (13), the anti-electromagnetic interference woven layer (12) is wrapped on the outer wall of the plastic shell (13), and the waterproof protective film (11) is fixedly connected to one surface, far away from the plastic shell (13), of the anti-electromagnetic interference woven layer (12); the composite shielding layer (5) comprises a copper foil layer (51) and an insulation base layer (52), wherein the epoxy resin layer (31) is filled in the insulation base layer (52), and the copper foil layer (51) is fixed on the outer side wall of the insulation base layer (52); a grounding wire (61) is arranged in the foaming layer (6), a conducting wire (62) is connected to the grounding wire (61), and two ends of the conducting wire (62) are respectively connected with the copper foil layer (51) and the electromagnetic interference resistant woven layer (12); the foaming layer (6) evenly separates a plurality of core wires (2), and the good chemical resistance and the electrical insulation of the epoxy resin layer (31) enable a plurality of electronic wires not to be mutually affected by electromagnetic waves, so that the tightness of the electronic wires is improved, and meanwhile, the service life is prolonged.

2. The anti-interference HDMI cable of claim 1, wherein: the number of the core wires (2) is eight, the number of the electron wires (3) is four, the elastic frame (4) divides the interior of the plastic shell (13) into four areas on average, and each area is provided with one electron wire (3) and two core wires (2).

3. An anti-interference HDMI cable as defined in claim 2, wherein: the core wire (2) comprises a signal wire (21), a annealed copper wire (22), an extruded plastic sheath (23) and a shielding base layer (24) which are sequentially wrapped on the outer side of the signal wire (21).