Anti-electromagnetic interference shielding cable

Abstract

The utility model provides an anti-electromagnetic interference shielding cable, which relates to the technical field of cables and comprises a protective layer, four signal conductors are arranged in the protective layer, a first aluminum foil shielding layer is wound outside the four signal conductors, an insulating sleeve is arranged on the outer surface of the first aluminum foil shielding layer, and a second aluminum foil shielding layer is wound outside the insulating sleeve. A metal net shielding layer is arranged between the outer wall of the insulating sleeve and the inner wall of the protective layer, the signal wire comprises a conductor, an insulating sheath and an aluminum foil shielding layer II, and the aluminum foil shielding layer II is arranged on the outer wall of the insulating sheath; according to the utility model, the aluminum foil shielding layer II is arranged on the outer layer of the signal conductor, shielding of low-frequency electromagnetic interference is provided for the independent signal conductor, and the aluminum foil shielding layer I and the metal net shielding layer are arranged in a matched manner, so that external combined electromagnetic shielding is performed outside the four groups of signal conductors, and the electromagnetic shielding effectiveness in a wider frequency range is provided; and the anti-electromagnetic interference shielding effect of the cable is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a kind of anti-electromagnetic interference shielded cable. BACKGROUND

[0002] Cable is a kind of electric energy or signal transmission device, usually by several or several groups of wires, in information technology field, such as 5G communication, optical fiber communication, high-speed Ethernet etc., data transmission rate is constantly improved, and the accuracy and stability of signal transmission are proposed extremely high requirement, even tiny electromagnetic interference, all can lead to signal distortion, error rate increase, seriously affect the transmission quality and integrity of data, therefore need to use shielded cable to protect cable internal signal from external electromagnetic interference.

[0003] At present, the shielding effect of existing shielded cable is poor, in actual use process, often affected by external electromagnetic interference, leading to transmission signal obvious distortion and attenuation, prone to cause control signal error, lead to equipment operation anomaly, even cause production accident, cause huge economic loss. UTILITY MODEL CONTENT

[0004] The utility model mainly provides a kind of anti-electromagnetic interference shielded cable of electromagnetic shielding effectiveness of more wide frequency range.

[0005] In order to realize the above-mentioned purpose, the utility model has adopted the following technical scheme: an anti-electromagnetic interference shielded cable, including protective layer, signal wire is arranged in the inside of the protective layer, the signal wire is arranged four, four signal wire is wound and is arranged aluminum foil shielding layer one outside, the outer surface of the aluminum foil shielding layer one is provided with insulating sleeve, metal mesh shielding layer is arranged between the outer wall of the insulating sleeve and the inner wall of the protective layer, the signal wire includes conductor, insulating sheath and aluminum foil shielding layer two, the aluminum foil shielding layer two is arranged on the outer wall of the insulating sheath.

[0006] Preferably, the insulating sheath is fixedly connected to the outer wall of the conductor, and the conductor is insulated and protected by the insulating sheath.

[0007] Preferably, the protective layer includes a wear-resistant layer, a flame-retardant layer and a corrosion-resistant layer, and the flame-retardant layer is fixedly connected to the inner wall of the wear-resistant layer.

[0008] Preferably, the corrosion-resistant layer is fixedly connected to the inner wall of the flame-retardant layer, so that the utility model has the ability to resist chemical corrosion and can protect the cable in a chemical environment.

[0009] Preferably, the insulation strip is arranged between the four signal conductors, the multiple conductors are separated by the insulation strip, direct contact between the conductors is prevented, mechanical strength and stability of the cable are increased, the conductors are separated to help reduce electromagnetic interference between adjacent conductors, and overall signal quality is improved.

[0010] Compared with the prior art, the utility model has the advantages and positive effects that:

[0011] 1、 the utility model discloses, provide low -frequency electromagnetic interference's shielding to single signal conductor through the aluminium foil shielding layer two of signal conductor outer layer setting, cooperate the setting of aluminium foil shielding layer one and metal screen shielding layer, carry out external combination electromagnetic shield in the outside of four groups of signal conductors, provide the electromagnetic shield efficiency of wider frequency range, strengthen the anti -electromagnetic interference shielding effect of the utility model.

[0012] 2、 the utility model discloses, multiple conductors are separated by the setting of insulation strip, direct contact between the conductors is prevented, mechanical strength and stability of the cable are increased, avoid the distortion or damage of conductor when being subjected to external force, the conductors are separated to help reduce electromagnetic interference between adjacent conductors, and overall signal quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structure diagram of an anti-electromagnetic interference shielding cable is provided for the utility model;

[0014] Figure 2 A structure diagram of an anti-electromagnetic interference shielding cable protective layer is provided for the utility model;

[0015] Figure 3 A structure diagram of an anti-electromagnetic interference shielding cable signal conductor is provided for the utility model.

[0016] Legend: 1, protective layer; 11, wear-resistant layer; 12, flame-retardant layer; 13, corrosion-resistant layer; 2, metal screen shielding layer; 3, insulation sleeve; 4, aluminium foil shielding layer one; 5, signal conductor; 51, conductor; 52, insulation sheath; 53, aluminium foil shielding layer two; 6, insulation strip. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0018] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that can not be described in detail herein, and the present application is not limited to the specific embodiments described herein.

[0019] Please refer to Figure 1 - Figure 3 The utility model provides a technical scheme: a kind of anti-electromagnetic interference shielded cable, including protective layer 1, signal wire 5 is arranged in the inside of protective layer 1, signal wire 5 is arranged four, four signal wire 5 is wound and arranged aluminum foil shielding layer one 4, the outer surface of aluminum foil shielding layer one 4 is arranged insulating sleeve 3, metal mesh shielding layer 2 is arranged between the outer wall of insulating sleeve 3 and the inner wall of protective layer 1, metal mesh shielding layer 2 is woven with tinned copper wire, signal wire 5 includes conductor 51, insulating sheath 52 and aluminum foil shielding layer two 53, aluminum foil shielding layer two 53 is arranged in the outer wall of insulating sheath 52, by the aluminum foil shielding layer two 53 of signal wire 5 outer layer setting, the shielding of low-frequency electromagnetic interference is provided to individual signal wire 5, cooperate the setting of aluminum foil shielding layer one 4 and metal mesh shielding layer 2, external combination electromagnetic shielding is carried out in the outside of four groups of signal wire 5, provide wider frequency range electromagnetic shielding efficiency, enhance the anti-electromagnetic interference shielding effect of the utility model.

[0020] As Figure 3 Shown, insulating sheath 52 is fixedly connected in the outer wall of conductor 51, by using insulating sheath 52 to the outside of conductor 51 is insulated and protected.

[0021] As Figure 2 Shown, protective layer 1 includes wear-resistant layer 11, fire-retardant layer 12 and corrosion-resistant layer 13, fire-retardant layer 12 is fixedly connected in the inner wall of wear-resistant layer 11, by the setting of wear-resistant layer 11 and fire-retardant layer 12, improve the wear resistance and fire-retardant property of the utility model, wear-resistant layer 11 is made of high-strength wear-resistant rubber material, this rubber has excellent hardness and tenacity, and the high molecular structure in its inside can effectively resist the friction and scraping of outside.The damage of outside factors to internal structure is greatly reduced in actual use process, whether it is frequent dragging, friction or collision of sharp object, thereby prolonging the service life of product, fire-retardant layer 12 provides reliable fire safety guarantee for the utility model and surrounding environment in the case where fire hazard exists.

[0022] As Figure 2 Shown, corrosion-resistant layer 13 is fixedly connected in the inner wall of fire-retardant layer 12, by the setting of corrosion-resistant layer 13, the utility model has the ability of resisting chemical corrosion, and the cable can be protected in chemical environment.

[0023] As Figure 1As shown, the insulation strips 6 are arranged between the four signal conductors 5, which effectively separate the multiple conductors by the arrangement of the insulation strips 6, prevent direct contact between the conductors, increase the mechanical strength and stability of the cable, avoid the distortion or damage of the conductors when subjected to external force, and help to reduce the electromagnetic interference between adjacent conductors, thereby improving the overall signal quality.

[0024] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical scheme of the present application, in accordance with the technical essence of the present application, still belong to the protection scope of the technical scheme of the present application.

Claims

1. An electromagnetic interference shielded cable comprising a protective layer (1), characterised in that: The inside of the protective layer (1) is provided with signal wires (5), four of which are provided with an aluminum foil shielding layer one (4) outside, the outer surface of the aluminum foil shielding layer one (4) is provided with an insulating sleeve (3), the outer wall of the insulating sleeve (3) and the inner wall of the protective layer (1) are provided with a metal mesh shielding layer (2), the signal wire (5) comprises a conductor (51), an insulating outer skin (52) and an aluminum foil shielding layer two (53), and the aluminum foil shielding layer two (53) is arranged on the outer wall of the insulating outer skin (52).

2. The electromagnetic interference shielding cable of claim 1, wherein: The insulating outer skin (52) is fixedly connected to the outer wall of the conductor (51).

3. The electromagnetic interference shielding cable of claim 1, wherein: The protective layer (1) comprises a wear-resistant layer (11), a flame-retardant layer (12) and a corrosion-resistant layer (13), and the flame-retardant layer (12) is fixedly connected to the inner wall of the wear-resistant layer (11).

4. The electromagnetic interference shielding cable of claim 3, wherein: The corrosion-resistant layer (13) is fixedly connected to the inner wall of the flame-retardant layer (12).

5. The electromagnetic interference shielding cable of claim 1, wherein: The four signal wires (5) are provided with an insulating strip (6).

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