Noise reduction shielding case

Abstract

The utility model relates to the technical field of shielding cases, and discloses a noise reduction shielding case, which comprises a circuit board, an electronic component arranged on the circuit board, a clamping device arranged on the circuit board and positioned on the periphery of the electronic component, and a noise reduction shielding case arranged on the clamping device and positioned on the periphery of the electronic component. A clamping ring groove is formed in the top end of the clamping device, an inner cavity of the clamping ring groove is movably connected with the noise reduction shielding cover, a positioning groove is formed in the inner cavity wall of the clamping ring groove, a rotating clamping groove is formed in the inner cavity wall of the positioning groove, and an inner cavity of the rotating clamping groove is communicated with an inner cavity of the clamping ring groove. The inner cavities of the positioning groove and the rotary clamping groove are movably connected with the noise reduction shielding case, and the noise reduction shielding case comprises a shielding case. According to the utility model, not only is the noise reduction function realized, but also the phenomenon of discomfort caused by noise generated by electronic components can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding covers, in particular to a noise reduction shielding cover. Background Art

[0002] A shielding cover is a device that can shield electromagnetic radiation. It is usually used in electronic products, instruments, equipment, buildings, etc. to protect the working environment, reduce electromagnetic interference, and improve equipment reliability.

[0003] At present, shielding covers are widely used for shielding electronic components and hardware modules. They can effectively shield harmful electromagnetic waves and ensure the normal operation of electronic equipment. When in use, they will be put on top of the electronic components to shield the electromagnetic waves generated during the operation of the electronic components. The inventors have found that some electronic components (such as capacitors, transformers, inductors, oscillators, etc.) will emit noise. Since the shielding cover does not have a noise reduction function, it will cause discomfort to the user. Therefore, we propose a noise reduction shielding cover. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a noise reduction shielding cover which has the advantages of noise reduction function and can avoid discomfort caused by noise emitted by electronic components, thereby solving the problem that the shielding cover does not have the noise reduction function and will cause discomfort to the user.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of having a noise reduction function and avoiding discomfort caused by noise from electronic components, the utility model provides the following technical solutions: a noise reduction shielding cover, including a circuit board;

[0008] An electronic component, wherein the electronic component is arranged on a circuit board;

[0009] A card connector, which is arranged on the circuit board and is located at the periphery of the electronic component;

[0010] A noise reduction shielding cover is arranged on the connector and covers the electronic components at the same time. When the electronic components on the circuit board emit harmful electromagnetic waves and noise during operation, the noise emitted at this time is absorbed by the noise reduction shielding cover to achieve the effect of noise reduction, and the harmful magnetic waves emitted are shielded and blocked by the noise reduction shielding cover, thereby facilitating noise reduction and shielding of harmful electromagnetic waves, thereby having a noise reduction function and avoiding the phenomenon of discomfort caused by noise emitted by electronic components.

[0011] As a preferred technical solution of the utility model, a snap ring groove is opened inside the top of the snap connector, and the inner cavity of the snap ring groove is movably connected to the noise reduction shielding cover to facilitate the assembly of the noise reduction shielding cover to the snap connector, and the operation is simple and quick.

[0012] As a preferred technical solution of the utility model, a positioning groove is provided on the inner cavity wall of the snap-fit ​​ring groove, and a rotating slot is provided on the inner cavity wall of the positioning groove. The inner cavity of the rotating slot is communicated with the inner cavity of the snap-fit ​​ring groove. The inner cavities of the positioning groove and the rotating slot are movably connected to the noise reduction shielding cover, so as to facilitate the assembly of the noise reduction shielding cover to the snap connector, and the operation is simple and quick.

[0013] As a preferred technical solution of the utility model, the noise reduction shielding cover includes a shielding cover, the outer surface of the shielding cover is movably engaged with the inner cavity of the clamping ring groove, a clamping block is fixedly installed on the outer surface of the shielding cover, the outer surface of the clamping block is movably connected to the inner cavity of the positioning groove and the rotating clamping groove, and a noise reduction structure is arranged on the inner cavity wall of the shielding cover. By assembling the noise reduction shielding cover to the clamping device, and the noise reduction shielding cover covers the electronic components on the circuit board, the shielding cover is clamped to the inner cavity of the clamping ring groove opened on the clamping device, and the clamping block fixed on the shielding cover enters the inner cavity of the rotating clamping groove through the inner cavity of the positioning groove, and then the shielding cover is rotated. At this time, the shielding cover drives the clamping block to rotate in the inner cavity of the rotating clamping groove until the shielding cover is clamped and assembled to the clamping device, and the noise reduction structure in the shielding cover covers the electronic components, thereby facilitating the installation of the noise reduction shielding cover, and the operation is simple and quick.

[0014] As a preferred technical solution of the utility model, the shielding cover is made of any one of aluminum, copper, stainless steel and nickel alloy. The shielding cover can be made of different types of metal materials and can be customized into various types according to market demand. It has a wide range of applications and is easy to manufacture.

[0015] As a preferred technical solution of the utility model, the top wall of the inner cavity of the shielding cover is provided with heat dissipation holes, which are arranged in a radial circular array so that the heat generated by the running electronic components can be dissipated through the inner cavity of the heat dissipation holes, thereby playing a role in heat dissipation.

[0016] As a preferred technical solution of the utility model, the noise reduction structure includes an outer foam sound-absorbing board layer, the outer foam sound-absorbing board layer is fixedly connected to the inner cavity wall of the shielding cover, the inner cavity wall of the outer foam sound-absorbing board layer is provided with a wooden sound-absorbing board layer, and the inner cavity wall of the wooden sound-absorbing board layer is provided with a fiber sound-absorbing board layer. When the electronic components on the circuit board make noise during operation, the noise emitted at this time is absorbed by the fiber sound-absorbing board layer, the wooden sound-absorbing board layer and the outer foam sound-absorbing board layer in turn to achieve the noise reduction effect, thereby avoiding the discomfort caused by the noise emitted by the electronic components.

[0017] As a preferred technical solution of the utility model, the cross-sectional thicknesses of the outer foam sound-absorbing board layer, the wooden sound-absorbing board layer and the fiber sound-absorbing board layer are equal. By designing the thicknesses of the outer foam sound-absorbing board layer, the wooden sound-absorbing board layer and the fiber sound-absorbing board layer to be the same, the noise reduction structure can absorb sound more evenly, the structure can be more stable, and the processing can be more convenient.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a noise reduction shielding cover, which has the following beneficial effects:

[0020] 1. When the electronic components on the circuit board emit harmful electromagnetic waves and noise during operation, the noise emitted at this time is absorbed by the fiber sound-absorbing board layer, the wooden sound-absorbing board layer and the outer foam sound-absorbing board layer in turn to achieve the effect of noise reduction, and the harmful magnetic waves emitted are shielded and blocked by the shielding cover made of metal material. During this period, the heat emitted by the running electronic components can be dissipated through the inner cavity of the heat dissipation holes to play a role in heat dissipation, thereby facilitating noise reduction and shielding of harmful electromagnetic waves, thereby having a noise reduction function and avoiding the phenomenon of discomfort caused by the noise emitted by the electronic components.

[0021] 2. The noise reduction shielding cover is assembled onto the connector, and the noise reduction shielding cover covers the electronic components on the circuit board. At this time, the shielding cover is snapped into the inner cavity of the snap ring groove opened on the connector, and the clamping block fixed on the shielding cover enters the inner cavity of the rotating clamping slot through the inner cavity of the positioning groove, and then the shielding cover is rotated. At this time, the shielding cover drives the clamping block to rotate in the inner cavity of the rotating clamping slot until the shielding cover is snap-assembled onto the connector, and the noise reduction structure in the shielding cover covers the electronic components, thereby facilitating the installation of the noise reduction shielding cover, and the operation is simple and quick.

[0022] 3. The noise reduction shielding cover of the utility model can be made of different types of metal materials, and can be customized into various types according to market demand. It has a wide range of applications and is easy to manufacture.

[0023] 4. The noise reduction shielding cover is designed to have the same thickness of the outer foam sound-absorbing board layer, the wooden sound-absorbing board layer and the fiber sound-absorbing board layer, so that the noise reduction structure can absorb sound more evenly, the structure is more stable and the processing is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a main stereoscopic view of the utility model;

[0025] Figure 2 This is an exploded perspective view of the utility model;

[0026] Figure 3This is a three-dimensional diagram of the connection between the circuit board and the card connector of the utility model;

[0027] Figure 4 This is a three-dimensional diagram of the noise reduction shielding cover of the utility model;

[0028] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0029] In the figure: 1, circuit board; 2, electronic component; 3, connector; 31, snap ring groove; 32, positioning groove; 33, rotation slot; 4, noise reduction shielding cover; 41, shielding cover; 411, heat dissipation hole; 42, block; 431, outer foam sound-absorbing board layer; 432, wooden sound-absorbing board layer; 433, fiber sound-absorbing board layer. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] Reference Figure 1-5 , a noise reduction shield is provided, comprising a circuit board 1;

[0032] An electronic component 2, wherein the electronic component 2 is arranged on the circuit board 1;

[0033] A card connector 3, wherein the card connector 3 is disposed on the circuit board 1 and is located at the periphery of the electronic component 2;

[0034] The noise reduction shielding cover 4 is arranged on the connector 3 and covers the electronic component 2 at the same time.

[0035] A snap ring groove 31 is formed inside the top end of the snap connector 3 , and the inner cavity of the snap ring groove 31 is movably connected to the noise reduction shielding cover 4 .

[0036] A positioning groove 32 is provided on the inner wall of the snap ring groove 31, and a rotating groove 33 is provided on the inner wall of the positioning groove 32. The inner cavity of the rotating groove 33 is communicated with the inner cavity of the snap ring groove 31, and the inner cavities of the positioning groove 32 and the rotating groove 33 are movably connected to the noise reduction shielding cover 4.

[0037] The noise reduction shielding cover 4 includes a shielding cover 41, the outer surface of the shielding cover 41 is movably engaged with the inner cavity of the clamping ring groove 31, a clamping block 42 is fixedly installed on the outer surface of the shielding cover 41, the outer surface of the clamping block 42 is movably connected with the inner cavity of the positioning groove 32 and the rotating clamping groove 33, and a noise reduction structure is arranged on the inner cavity wall of the shielding cover 41.

[0038] The shielding cover 41 is made of any one of aluminum, copper, stainless steel and nickel alloy.

[0039] The inner cavity top wall of the shielding cover 41 is provided with heat dissipation holes 411 , and the heat dissipation holes 411 are arranged in a radial circular array.

[0040] The noise reduction structure includes an outer foam sound absorbing board layer 431, which is fixedly connected to the inner cavity wall of the shielding cover 41, the inner cavity wall of the outer foam sound absorbing board layer 431 is provided with a wooden sound absorbing board layer 432, and the inner cavity wall of the wooden sound absorbing board layer 432 is provided with a fiber sound absorbing board layer 433.

[0041] The cross-sectional thicknesses of the outer foam sound absorbing board layer 431 , the wooden sound absorbing board layer 432 , and the fiber sound absorbing board layer 433 are equal.

[0042] Working principle: by assembling the noise reduction shielding cover 4 onto the connector 3, and the noise reduction shielding cover 4 covers the electronic component 2 on the circuit board 1, at this time, the shielding cover 41 is clamped into the inner cavity of the clamping ring groove 31 opened on the connector 3, and the clamping block 42 fixed on the shielding cover 41 enters the inner cavity of the rotating clamping groove 33 through the inner cavity of the positioning groove 32, and then the shielding cover 41 is rotated, at this time, the shielding cover 41 drives the clamping block 42 to rotate in the inner cavity of the rotating clamping groove 33, until the shielding cover 41 is clamped and assembled onto the connector 3, and the noise reduction structure in the shielding cover 41 covers the electronic component 2, so that the installation of the noise reduction shielding cover 4 is convenient, and the operation is simple and quick;

[0043] When the electronic component 2 on the circuit board 1 emits harmful electromagnetic waves and noise during operation, the noise emitted at this time is absorbed by the fiber sound-absorbing board layer 433, the wooden sound-absorbing board layer 432 and the outer foam sound-absorbing board layer 431 in turn to achieve the effect of noise reduction, and the harmful magnetic waves emitted are shielded and blocked by the shielding cover 41 made of metal material. During this period, the heat emitted by the running electronic component 2 can be dissipated through the inner cavity of the heat dissipation hole 411 to play a role in heat dissipation, thereby facilitating noise reduction and shielding of harmful electromagnetic waves, and thus having a noise reduction function, and can avoid the phenomenon of discomfort caused by the noise emitted by the electronic component 2. The device not only has a noise reduction function, but also can avoid the phenomenon of discomfort caused by the noise emitted by the electronic component 2.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A noise reduction shield, characterized in that: comprising a circuit board (1); An electronic component (2), wherein the electronic component (2) is arranged on the circuit board (1); A card connector (3), the card connector (3) being arranged on the circuit board (1) and being located at the periphery of the electronic component (2); A noise reduction shielding cover (4) is arranged on the connector (3) and covers the electronic component (2) at the same time.

2. The noise reduction shield according to claim 1, characterized in that: A snap ring groove (31) is provided inside the top end of the snap connector (3), and the inner cavity of the snap ring groove (31) is movably connected to the noise reduction shielding cover (4).

3. The noise reduction shield according to claim 2, characterized in that: A positioning groove (32) is provided on the inner wall of the snap ring groove (31), a rotating groove (33) is provided on the inner wall of the positioning groove (32), the inner cavity of the rotating groove (33) is communicated with the inner cavity of the snap ring groove (31), and the inner cavities of the positioning groove (32) and the rotating groove (33) are both movably connected to the noise reduction shielding cover (4).

4. The noise reduction shielding cover according to claim 3, characterized in that: The noise reduction shielding cover (4) comprises a shielding cover (41), the outer surface of the shielding cover (41) is movably engaged with the inner cavity of the snap ring groove (31), a clamping block (42) is fixedly mounted on the outer surface of the shielding cover (41), the outer surface of the clamping block (42) is movably connected with the inner cavities of the positioning groove (32) and the rotating clamping groove (33), and a noise reduction structure is arranged on the inner cavity wall of the shielding cover (41).

5. The noise reduction shield according to claim 4, characterized in that: The shielding cover (41) is made of any one of aluminum, copper, stainless steel and nickel alloy.

6. The noise reduction shield according to claim 5, characterized in that: The inner cavity top wall of the shielding cover (41) is provided with heat dissipation holes (411), and the heat dissipation holes (411) are arranged in a radial circular array.

7. The noise reduction shield according to claim 4, characterized in that: The noise reduction structure comprises an outer foam sound absorbing board layer (431), the outer foam sound absorbing board layer (431) is fixedly connected to the inner cavity wall of the shielding cover (41), the inner cavity wall of the outer foam sound absorbing board layer (431) is provided with a wooden sound absorbing board layer (432), and the inner cavity wall of the wooden sound absorbing board layer (432) is provided with a fiber sound absorbing board layer (433).

8. The noise reduction shield according to claim 7, characterized in that: The cross-sectional thicknesses of the outer foam sound-absorbing board layer (431), the wooden sound-absorbing board layer (432) and the fiber sound-absorbing board layer (433) are equal.

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