Noise absorption electromagnetic film

Abstract

The utility model relates to the technical field of communication, and discloses a noise absorption electromagnetic film which comprises a first protective film and a second protective film, a noise reduction assembly is arranged in the first protective film, a connecting assembly is arranged in the first protective film, and the noise reduction assembly comprises two groups of first sound absorption cotton layers arranged in the first protective film. A noise reduction structure is arranged at the top of the first sound absorption cotton layer, the connecting assembly comprises a first insulating layer arranged in the first protective film, a connecting structure is arranged in the first insulating layer, and the noise reduction assembly further comprises a second sound absorption cotton layer arranged at the top of the first sound absorption cotton layer. The noise reduction structure comprises sound absorption holes formed in the bottoms of the two second sound absorption cotton layers, and one second sound absorption cotton layer is arranged at the bottom of the inner side of the first protection film, so that the purpose of weakening and reducing the electromagnetic noise is achieved, the influence of the noise on the electronic equipment is reduced, the use stability of the device is enhanced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of communications, and in particular relates to a noise absorbing electromagnetic film. Background Art

[0002] The utility model with publication number CN211378661U relates to an electromagnetic film, including a substrate and a conductive structure, wherein the substrate can be transmitted by electromagnetic waves, a plurality of openings are arranged at intervals on the substrate, and the conductive structure is arranged in the internal space defined by the openings, and the maximum value of the spacing S of all adjacent openings is less than the wavelength λ of the electromagnetic wave. The electromagnetic film forms gap holes with an aperture size smaller than the wavelength of the electromagnetic wave between the plurality of openings, and the electromagnetic wave is diffracted and propagates disorderly when passing through the gap holes, thereby expanding the propagation range.

[0003] However, the above patent still has the following problems: during the use of the power device, electromagnetic noise is generated due to aging or damage of internal parts of the device, which will affect the normal use of the power device. It is now necessary to design a noise-absorbing electromagnetic film. The connection effect inside the electromagnetic film is not good, and cracking and delamination between the film layers are prone to occur, which makes the device inconvenient to use.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A noise absorbing electromagnetic film comprises a first protective film and a second protective film, wherein a noise reduction component is arranged inside the first protective film, a connecting component is arranged inside the first protective film, the noise reduction component comprises two groups of first sound-absorbing cotton layers arranged inside the first protective film, a noise reduction structure is arranged on the top of the first sound-absorbing cotton layer, the connecting component comprises a first insulating layer arranged inside the first protective film, a connecting structure is arranged inside the first insulating layer, and the noise reduction component also comprises a second sound-absorbing cotton layer arranged on the top of the first sound-absorbing cotton layer.

[0007] As a preferred embodiment of the utility model, the noise reduction structure includes sound-absorbing holes opened at the bottom of two groups of second sound-absorbing cotton layers, a group of second sound-absorbing cotton layers are arranged at the inner bottom of the first protective film, and a group of first adhesive layers are filled between the first protective film and the group of second sound-absorbing cotton layers.

[0008] As a preferred embodiment of the utility model, the noise reduction component also includes another group of second sound-absorbing cotton layers arranged on the top of the second protective film, and a group of second adhesive layers is filled between the second protective film and the other group of second sound-absorbing cotton layers.

[0009] As a preferred embodiment of the utility model, the connection structure includes a second insulating layer arranged at the bottom of the first insulating layer, a first metal layer is arranged at the inner bottom of the first insulating layer, a second metal layer is arranged on the top of the second insulating layer, and a conductive adhesive layer is arranged between the first metal layer and the second metal layer.

[0010] As a preferred embodiment of the present invention, the top of the first insulating layer is tightly fixed to the bottom of a group of first sound-absorbing cotton layers, and the bottom of the second insulating layer is tightly fixed to the top of another group of first sound-absorbing cotton layers.

[0011] As a preferred embodiment of the present invention, the inner walls on both sides of the first protective film are in close contact with the outer walls on both sides of the first insulating layer, and the inner walls on both sides of the second protective film are in close contact with the outer walls on both sides of the second insulating layer.

[0012] As a preferred embodiment of the present invention, the bottom of the first protective film is tightly fixed to the top of the second protective film, and the bottom of the first insulating layer is tightly fixed to the top of the second insulating layer.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. To achieve the purpose of weakening and reducing electromagnetic noise, reduce the impact of noise on electronic equipment, enhance the stability of device use, and extend the service life of the device.

[0015] 2. To achieve the purpose of wrapping and fixing the membrane layer, improve the connection effect between the membrane layers, improve the connection strength of the membrane layers, and improve the durability of the device.

[0016] 3. To achieve the purpose of wrapping and fixing the film layer, improve the protective effect of the film layer, reduce the damage to the film layer, improve the protection ability of the device, and optimize the use experience of the device.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a layered diagram of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second sound-absorbing cotton layer of the utility model;

[0023] Figure 5 It is a schematic diagram of the sound-absorbing hole structure of the utility model.

[0024] In the figure: 10, first protective film; 11, second protective film; 12, first adhesive layer; 13, second adhesive layer; 14, first sound-absorbing cotton layer; 15, second sound-absorbing cotton layer; 16, first insulating layer; 17, second insulating layer; 18, first metal layer; 19, second metal layer; 20, conductive adhesive layer; 21, sound-absorbing holes. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "upper", "lower", "inner", "outer", "side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1: A noise absorbing electromagnetic film, specifically Figure 1 and Figure 4As shown, it includes a first protective film 10 and a second protective film 11, a noise reduction component is arranged inside the first protective film 10, a connecting component is arranged inside the first protective film 10, the noise reduction component includes two groups of first sound-absorbing cotton layers 14 arranged inside the first protective film 10, a noise reduction structure is arranged on the top of the first sound-absorbing cotton layer 14, the connecting component includes a first insulating layer 16 arranged inside the first protective film 10, a connecting structure is arranged inside the first insulating layer 16, and the noise reduction component also includes a second sound-absorbing cotton layer 15 arranged on the top of the first sound-absorbing cotton layer 14. Noise is weakened by the noise reduction component, and the film layers are connected by the connecting component.

[0029] Specific as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the noise reduction structure includes sound-absorbing holes 21 opened at the bottom of two groups of second sound-absorbing cotton layers 15, one group of second sound-absorbing cotton layers 15 is arranged at the inner bottom of the first protective film 10, and a group of first adhesive layers 12 are filled between the first protective film 10 and the group of second sound-absorbing cotton layers 15. The first protective film 10 and the group of second sound-absorbing cotton layers 15 are connected by the first adhesive layer 12.

[0030] Specific as Figure 1 , Figure 2 and Figure 3 As shown, the noise reduction component also includes another group of second sound-absorbing cotton layers 15 arranged on the top of the second protective film 11, and a group of second adhesive layers 13 are filled between the second protective film 11 and the other group of second sound-absorbing cotton layers 15. The second protective film 11 is connected to the other group of second sound-absorbing cotton layers 15 through the second adhesive layer 13, and the noise is weakened through the first sound-absorbing cotton layer 14, the second sound-absorbing cotton layer 15 and the sound-absorbing holes 21.

[0031] According to the above conclusions, through the structure of the second protective film 11, the first adhesive layer 12, the second adhesive layer 13, the first sound-absorbing cotton layer 14, the second sound-absorbing cotton layer 15 and the sound-absorbing holes 21, the purpose of weakening and reducing electromagnetic noise is achieved, the impact of noise on electronic equipment is reduced, the stability of the device is enhanced, and the service life of the device is extended.

[0032] Embodiment 2: Based on Embodiment 1, the specific Figure 1 , Figure 2 and Figure 3 As shown, the connection structure includes a second insulating layer 17 disposed at the bottom of the first insulating layer 16, a first metal layer 18 is disposed at the inner bottom of the first insulating layer 16, a second metal layer 19 is disposed on the top of the second insulating layer 17, and a conductive adhesive layer 20 is disposed between the first metal layer 18 and the second metal layer 19. The first insulating layer 16 and the second insulating layer 17 are used to limit and fix the first metal layer 18, the second metal layer 19 and the conductive adhesive layer 20.

[0033] According to the above conclusions, through the structure of the first insulating layer 16, the second insulating layer 17, the first metal layer 18, the second metal layer 19 and the conductive adhesive layer 20, the purpose of wrapping and fixing the film layer is achieved, the connection effect between the film layers is improved, the connection strength of the film layers is improved, and the durability of the device is improved.

[0034] Embodiment 3: Based on Embodiment 1 and Embodiment 2, the specific Figure 1 , Figure 2 and Figure 3 As shown, the top of the first insulating layer 16 is tightly fixed to the bottom of a group of first sound-absorbing cotton layers 14, and the bottom of the second insulating layer 17 is tightly fixed to the top of another group of first sound-absorbing cotton layers 14. The first insulating layer 16 is placed at the bottom of a group of first sound-absorbing cotton layers 14, and the second insulating layer 17 is placed at the top of a group of first sound-absorbing cotton layers 14.

[0035] Specific as Figure 1 , Figure 2 and Figure 4 As shown, the inner walls of the first protective film 10 are in close contact with the outer walls of the first insulating layer 16, and the inner walls of the second protective film 11 are in close contact with the outer walls of the second insulating layer 17. The first insulating layer 16 and the second insulating layer 17 are wrapped by the first protective film 10 and the second protective film 11.

[0036] Specific as Figure 1 and Figure 2 As shown, the bottom of the first protection film 10 is tightly fixed to the top of the second protection film 11 , and the bottom of the first insulating layer 16 is tightly fixed to the top of the second insulating layer 17 .

[0037] In summary, through the structure of the first protective film 10, the second protective film 11, the first insulating layer 16 and the second insulating layer 17, the purpose of wrapping and fixing the film layer is achieved, the protective effect of the film layer is improved, the damage to the film layer is reduced, the protection ability of the device is improved, and the use experience of the device is optimized.

[0038] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A noise absorbing electromagnetic film, comprising a first protective film (10) and a second protective film (11), characterized in that: A noise reduction component is arranged inside the first protective film (10), a connection component is arranged inside the first protective film (10), the noise reduction component comprises two groups of first sound-absorbing cotton layers (14) arranged inside the first protective film (10), a noise reduction structure is arranged on the top of the first sound-absorbing cotton layer (14), the connection component comprises a first insulating layer (16) arranged inside the first protective film (10), a connection structure is arranged inside the first insulating layer (16), and the noise reduction component further comprises a second sound-absorbing cotton layer (15) arranged on the top of the first sound-absorbing cotton layer (14).

2. The noise absorbing electromagnetic film according to claim 1, characterized in that: The noise reduction structure comprises sound absorbing holes (21) opened at the bottom of two groups of second sound absorbing cotton layers (15); one group of second sound absorbing cotton layers (15) is arranged at the inner bottom of the first protective film (10); and a group of first adhesive layers (12) is filled between the first protective film (10) and the group of second sound absorbing cotton layers (15).

3. The noise absorbing electromagnetic film according to claim 1, characterized in that: The noise reduction component further comprises another group of second sound-absorbing cotton layers (15) arranged on top of the second protective film (11), and a group of second adhesive layers (13) are filled between the second protective film (11) and the other group of second sound-absorbing cotton layers (15).

4. The noise absorbing electromagnetic film according to claim 1, characterized in that: The connection structure comprises a second insulating layer (17) arranged at the bottom of the first insulating layer (16), a first metal layer (18) is arranged at the inner bottom of the first insulating layer (16), a second metal layer (19) is arranged on the top of the second insulating layer (17), and a conductive adhesive layer (20) is arranged between the first metal layer (18) and the second metal layer (19).

5. The noise absorbing electromagnetic film according to claim 1, characterized in that: The top of the first insulating layer (16) is tightly fixed to the bottom of a group of first sound-absorbing cotton layers (14), and the bottom of the second insulating layer (17) is tightly fixed to the top of another group of first sound-absorbing cotton layers (14).

6. The noise absorbing electromagnetic film according to claim 1, characterized in that: The inner walls on both sides of the first protective film (10) are in close contact with the outer walls on both sides of the first insulating layer (16), and the inner walls on both sides of the second protective film (11) are in close contact with the outer walls on both sides of the second insulating layer (17).

7. The noise absorbing electromagnetic film according to claim 1, characterized in that: The bottom of the first protective film (10) is tightly fixed to the top of the second protective film (11), and the bottom of the first insulating layer (16) is tightly fixed to the top of the second insulating layer (17).

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