Omnibearing conductive foam suitable for electromagnetic shielding

Abstract

The utility model discloses all-dimensional conductive foam suitable for electromagnetic shielding, and belongs to the technical field of conductive foam, the all-dimensional conductive foam comprises a basic module and a shielding module, the basic module comprises first conductive cloth, the surface of the first conductive cloth is provided with a mounting layer, the shielding module is arranged between the inner side and the two ends of the first conductive cloth, and the mounting layer is arranged between the inner side and the two ends of the first conductive cloth. The shielding module comprises two first shielding layers arranged at the two ends of the first conductive cloth respectively, a second shielding layer is arranged on the inner side of the first conductive cloth, and the second shielding layer is connected with the two first shielding layers. According to the conductive foam, the electromagnetic shielding layer is arranged, so that the conductive foam can have all-directional electromagnetic shielding capability, electromagnetic waves difficult to shield can be reflected, the practicability is improved, and the conductive foam can be conveniently mounted through the arrangement of the mounting layer.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of conductive foam, in particular to all-around conductive foam suitable for electromagnetic shielding. BACKGROUND

[0002] The conductive foam refers to wrapping conductive cloth on flame-retardant sponge, and after a series of treatments, the conductive foam has good surface conductivity and can be easily fixed on a shielding device by adhesive tape.

[0003] According to the search, the Chinese patent with the publication number CN108882664B discloses conductive foam suitable for electromagnetic shielding, which comprises an outer protective layer, a foam layer, a first adhesive layer, a metal foil layer and a second adhesive layer, and the conductive foam is formed by the combination of the above layers; the upper and lower surfaces of the metal foil layer are formed with a nickel-titanium alloy film, the foam layer has a leakage hole, the leakage hole is filled with carbon nanotubes, the carbon nanotubes are porous sponge-like carbon nanotube block materials; the first surface of the nickel-titanium alloy film is connected with the foam layer and the carbon nanotubes in the foam layer through the first adhesive layer, and the second surface of the nickel-titanium alloy film is connected with the second adhesive layer. The conductive foam provided by the application can provide better overall shielding performance and conductive performance for electronic equipment in a closed and narrow space with poor heat dissipation.

[0004] According to the related technology in the above, the applicant believes that the nickel-titanium alloy film is arranged on the upper and lower surfaces of the metal foil layer, so that the remaining parts of the conductive foam do not have the ability of electromagnetic shielding, thereby affecting the practicability. Therefore, we provide all-around conductive foam suitable for electromagnetic shielding. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the application provides all-around conductive foam suitable for electromagnetic shielding, which adopts the following technical scheme:

[0006] The all-around conductive foam suitable for electromagnetic shielding comprises a basic module and a shielding module, the basic module comprises a first conductive cloth, the surface of the first conductive cloth is provided with a mounting layer, the shielding module is arranged between the inner side and both ends of the first conductive cloth, the shielding module comprises two first shielding layers arranged at both ends of the first conductive cloth respectively, the inner side of the first conductive cloth is provided with a second shielding layer, and the second shielding layer is connected with the two first shielding layers.

[0007] By adopting the above technical scheme, the conductive foam as a whole has the ability of electromagnetic shielding, and the practicability is improved.

[0008] Further, the first shielding layer comprises a first glue layer coated between the first conductive cloth and one end of the second shielding layer, and the first conductive metal foil is attached to the first glue layer.

[0009] By adopting the above technical solution, the first conductive metal foil is conveniently installed.

[0010] Further, the first shielding layer further comprises a second glue layer coated on one side of the first conductive metal foil, and the second conductive cloth is attached to the second glue layer.

[0011] By adopting the above technical solution, the second conductive cloth is conveniently installed.

[0012] Further, the second shielding layer comprises a third glue layer coated on the inner side of the first conductive cloth, and the second conductive metal foil is attached to the inner side of the third glue layer.

[0013] By adopting the above technical solution, the first conductive cloth is installed outside the second conductive metal foil.

[0014] Further, the second shielding layer further comprises a fourth glue layer coated on the inner side of the second conductive metal foil, and the foam body is attached to the inner side of the fourth glue layer, and the first glue layer is coated between the foam body, the first conductive cloth and one end of the second conductive metal foil.

[0015] By adopting the above technical solution, the second conductive metal foil is installed outside the foam body.

[0016] Further, the installation layer comprises a fifth glue layer coated on the surface of the first conductive cloth, and the dustproof sticker is attached to the fifth glue layer, and one end of the dustproof sticker is fixedly connected with the easy-to-tear piece.

[0017] By adopting the above technical solution, the dustproof sticker is conveniently torn off through the easy-to-tear piece.

[0018] Further, the material of the first conductive cloth and the second conductive cloth is a nickel-titanium alloy film.

[0019] By adopting the above technical solution, the first conductive cloth and the second conductive cloth can have the ability of electromagnetic shielding.

[0020] Further, the material of the first glue layer, the second glue layer, the third glue layer, the fourth glue layer and the fifth glue layer is conductive glue.

[0021] By adopting the above technical solution, the conductivity of the conductive foam can be enhanced.

[0022] In summary, the present application has the following beneficial technical effects:

[0023] (1) Through the setting of the first shielding layer and the second shielding layer, the conductive foam can have all-round electromagnetic shielding capability, and can reflect electromagnetic waves that are difficult to shield, improving practicality;

[0024] (2) Through the setting of the first glue layer, the first conductive metal foil is facilitated to be installed, through the setting of the second glue layer, the second conductive cloth is facilitated to be installed, through the setting of the third glue layer, the first conductive cloth is facilitated to be installed outside the second conductive metal foil, and through the setting of the fourth glue layer, the second conductive metal foil is facilitated to be installed outside the foam main body;

[0025] (3) Through the setting of the dustproof sticker, the fifth glue layer is prevented from being contaminated by dust and losing effectiveness, through the setting of the easy-to-tear piece, the dustproof sticker is facilitated to be torn off, through the setting of the material of the first conductive cloth and the second conductive cloth as a nickel-titanium alloy film, electromagnetic shielding capability is achieved, and through the setting of the material of the first glue layer, the second glue layer, the third glue layer, the fourth glue layer and the fifth glue layer as conductive glue, the conductivity is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a schematic diagram of the explosion structure of the present application;

[0028] Figure 3 It is a schematic diagram of the explosion structure of the first shielding layer and the installation layer of the present application;

[0029] Figure 4 It is a schematic diagram of the explosion structure of the second shielding layer of the present application.

[0030] Explanation of reference numerals in the drawing:

[0031] 100, base module; 110, first conductive cloth; 120, installation layer; 121, fifth glue layer; 122, dustproof sticker; 123, easy-to-tear piece;

[0032] 200, shielding module; 210, first shielding layer; 211, first glue layer; 212, first conductive metal foil; 213, second glue layer; 214, second conductive cloth; 220, second shielding layer; 221, third glue layer; 222, second conductive metal foil; 223, fourth glue layer; 224, foam main body. DETAILED DESCRIPTION

[0033] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application; based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0034] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The following will be described in detail with reference to the drawings of the embodiments of the present application. Figures 1-4 The present application will be further described in detail.

[0037] Please refer to Figures 1-4 A kind of all-around conductive foam suitable for electromagnetic shielding, including basic module 100 and shielding module 200, basic module 100 includes first conductive cloth 110, the surface of first conductive cloth 110 is provided with mounting layer 120, shielding module 200 is arranged between the inner side and both ends of first conductive cloth 110, shielding module 200 includes two first shielding layers 210 respectively arranged at the both ends of first conductive cloth 110, the inner side of first conductive cloth 110 is provided with second shielding layer 220, and second shielding layer 220 is connected with two first shielding layers 210.

[0038] Through the setting of first shielding layer 210 and second shielding layer 220, the present conductive foam can have all-around electromagnetic shielding capability, and can reflect electromagnetic waves that are difficult to shield, improving practicability, through the setting of mounting layer 120, the present conductive foam can be conveniently installed.

[0039] The first shielding layer 210 comprises a first glue layer 211 coated between the first conductive cloth 110 and one end of the second shielding layer 220, the first conductive metal foil 212 is bonded on the first glue layer 211, the first shielding layer 210 further comprises a second glue layer 213 coated on one side of the first conductive metal foil 212, the second conductive cloth 214 is bonded on the second glue layer 213, the second shielding layer 220 comprises a third glue layer 221 coated on the inner side of the first conductive cloth 110, the second conductive metal foil 222 is bonded on the inner side of the third glue layer 221, the second shielding layer 220 further comprises a fourth glue layer 223 coated on the inner side of the second conductive metal foil 222, the foam body 224 is bonded on the inner side of the fourth glue layer 223, and the first glue layer 211 is coated between the foam body 224, the first conductive cloth 110 and one end of the second conductive metal foil 222.

[0040] By coating the fourth glue layer 223 on the surface of the foam body 224, the second conductive metal foil 222 can be bonded outside the foam body 224, by coating the third glue layer 221 on the surface of the second conductive metal foil 222, the first conductive cloth 110 can be bonded outside the second conductive metal foil 222, by coating the first glue layer 211 between the foam body 224, the first conductive cloth 110 and one end of the second conductive metal foil 222, the first conductive metal foil 212 can be bonded between the foam body 224, the first conductive cloth 110 and one end of the second conductive metal foil 222, and by coating the second glue layer 213 on one side of the first conductive metal foil 212, the second conductive cloth 214 can be bonded on the first conductive metal foil 212.

[0041] The mounting layer 120 comprises a fifth glue layer 121 coated on the surface of the first conductive cloth 110, the dustproof sticker 122 is bonded on the fifth glue layer 121, one end of the dustproof sticker 122 is fixedly connected with the easy-to-tear piece 123, the materials of the first conductive cloth 110 and the second conductive cloth 214 are both nickel-titanium alloy film, and the materials of the first glue layer 211, the second glue layer 213, the third glue layer 221, the fourth glue layer 223 and the fifth glue layer 121 are all conductive glue.

[0042] By tearing off the dustproof sticker 122 through the easy-to-tear piece 123, and then bonding the conductive foam on the position where installation is needed through the fifth glue layer 121, the installation of the conductive foam can be realized.

[0043] The implementation principle of the embodiment of the application is that: through the setting of the two second conductive cloths 214, the conductive foam can be comprehensively wrapped by the first conductive cloth 110, the material of the second conductive cloth 214 and the first conductive cloth 110 is set as a nickel-titanium alloy film, so that the conductive foam can have the ability of electromagnetic shielding in all directions, through the setting of the first conductive metal foil 212 and the second conductive metal foil 222, the electromagnetic waves passing through the second conductive cloth 214 and the first conductive cloth 110 can be reflected, thereby enhancing the performance of the electromagnetic shielding of the conductive foam, through the setting of the first glue layer 211, the second glue layer 213, the third glue layer 221, the fourth glue layer 223 and the fifth glue layer 121, the glue can also be conductive, so that the conductive foam can have the ability of conducting electricity in all directions, when the conductive foam needs to be installed, the dustproof sticker 122 can be torn through the easy-to-tear piece 123, and then the conductive foam can be adhered to the position to be used through the fifth glue layer 121.

[0044] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A omnidirectional conductive foam suitable for electromagnetic shielding, comprising a base module (100) and a shielding module (200), characterized in that: The base module (100) comprises a first conductive cloth (110), a mounting layer (120) is arranged on the surface of the first conductive cloth (110), and the shielding module (200) is arranged on the inner side of the first conductive cloth (110) and between two ends of the first conductive cloth (110); The shielding module (200) comprises two first shielding layers (210) arranged at two ends of the first conductive cloth (110) respectively, a second shielding layer (220) is arranged on the inner side of the first conductive cloth (110), and the second shielding layer (220) is connected with the two first shielding layers (210).

2. The omnidirectional conductive foam for electromagnetic shielding according to claim 1, wherein: The first shielding layer (210) comprises a first glue layer (211) coated between the first conductive cloth (110) and one end of the second shielding layer (220), and a first conductive metal foil (212) is bonded on the first glue layer (211).

3. The omnidirectional conductive foam for electromagnetic shielding according to claim 2, wherein: The first shielding layer (210) further comprises a second glue layer (213) coated on one side of the first conductive metal foil (212), and a second conductive cloth (214) is bonded on the second glue layer (213).

4. The omnidirectional conductive foam for electromagnetic shielding according to claim 3, wherein: The second shielding layer (220) comprises a third glue layer (221) coated on the inner side of the first conductive cloth (110), and a second conductive metal foil (222) is bonded on the inner side of the third glue layer (221).

5. The omnidirectional conductive foam for electromagnetic shielding according to claim 4, wherein: The second shielding layer (220) further comprises a fourth glue layer (223) coated on the inner side of the second conductive metal foil (222), and a foam body (224) is bonded on the inner side of the fourth glue layer (223), and the first glue layer (211) is coated between the foam body (224), the first conductive cloth (110) and one end of the second conductive metal foil (222).

6. The omnidirectional conductive foam for electromagnetic shielding according to claim 5, wherein: The mounting layer (120) comprises a fifth glue layer (121) coated on the surface of the first conductive cloth (110), and a dustproof sticker (122) is bonded on the fifth glue layer (121), and an easy-to-tear piece (123) is fixedly connected to one end of the dustproof sticker (122).

7. The omnidirectional conductive foam for electromagnetic shielding according to claim 6, wherein: The material of the first conductive cloth (110) and the second conductive cloth (214) is a nickel-titanium alloy film.

8. The omnidirectional conductive foam for electromagnetic shielding according to claim 7, wherein: The material of the first glue layer (211), the second glue layer (213), the third glue layer (221), the fourth glue layer (223) and the fifth glue layer (121) is conductive glue.

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