Metal shielding case and circuit board

Abstract

The utility model relates to the technical field of shielding cases, in particular to a metal shielding case and a circuit board. The metal shielding case comprises a base and a cover which are made of metal materials. A first opening is formed in the bottom of the base, a second opening is formed in the top of the base, and reinforcing ribs are arranged on the second opening; a plurality of protruding parts used for limiting are arranged on the base. The cover comprises a limiting plate and a cover plate; a plurality of heat dissipation holes are formed in the cover plate; a limiting hole is formed in the limiting plate; the cover covers the top of the base, and the protruding part is embedded into the limiting hole. The cover can be detached from the base in a lossless mode through the cooperation of the protruding part on the base and the limiting hole in the limiting plate, the cover cannot be damaged in the process, the cover can be repeatedly used, and detaching is very convenient and fast. The reinforcing ribs can improve the strength and stability of the base and prevent the shielding case from deforming. The heat dissipation holes are beneficial to improving the heat dissipation capability of the electronic device.

Description

Technical Field

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

[0002] The circuit boards, wires, and electronic components in electronic devices emit high-frequency electromagnetic waves during operation, disrupting their normal operation. These waves can also radiate outward, potentially harming the human body. To reduce electromagnetic interference and radiation, shielding devices are commonly used to enclose circuit boards, wires, and electronic components.

[0003] However, the disassembly of some shielding covers is destructive. During maintenance, the cover plate needs to be torn off the frame to expose the electronic components. This design will damage the shielding cover, so a shielding cover cannot be reused.

[0004] For example, the shielding cover and shielding cover assembly disclosed in Chinese patent application number: CN201120227752.3. It specifically discloses that "the peripheral wall of the shielding cover is assembled on the circuit board of the electronic device to shield the electronic components. When repairing the electronic components under the shielding cover, use a screwdriver or a rod that can be clamped with the clamping slot to clamp the cover plate on the peripheral edge of the clamping slot to prevent injury to the fingers, and then pull it up with force to make the cover plate connected to an arc-shaped edge of the opening flip up along the connecting wall toward the middle of the cover plate, and the connecting wall is pulled apart, and the cover plate is separated from the connecting plate along the connecting wall, thereby preventing the frame from being pulled off the circuit board by the pulling force, and the cover plate is separated from the frame." It can be seen that the design of the cover plate being separated from the connecting plate along the connecting wall will damage the shielding cover, making the same shielding cover unable to be reused. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies of the prior art, and its main purpose is to provide a metal shielding cover whose cover is detachably mounted on the base so that the shielding cover will not be damaged during maintenance and the shielding cover can be reused, thereby overcoming the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The present application provides a metal shielding cover, comprising a base and a cover made of metal material; a first opening is provided at the bottom of the base, a second opening is provided at the top of the base, and a reinforcing rib is provided on the second opening;

[0008] The base is provided with a plurality of protrusions for limiting position;

[0009] The cover comprises a limiting plate and a cover plate; the cover plate is provided with a plurality of heat dissipation holes; the limiting plate is provided with a limiting hole; the cover is covered on the top of the base, and the protrusion is embedded in the limiting hole.

[0010] Preferably, the structure of the protrusion is one of spherical, elliptical and wedge-shaped.

[0011] Preferably, the limiting plate is provided with a plurality of first slits, and limiting holes are provided on the limiting plate between some of the first slits.

[0012] Preferably, the bottom of the wall plate of the base is protruding downward and is provided with at least two welding portions.

[0013] Preferably, a connecting portion is provided at the intersection of the reinforcing ribs, and the structure of the connecting portion is one of circular, elliptical and square.

[0014] Preferably, a reinforcement plate is provided at the corner position of the top of the base.

[0015] Preferably, a second notch is provided at a top corner of the base.

[0016] Preferably, the base and the cover are stamped from tin-plated steel plates, and the thickness of the tin-plated steel plates is between 0.1-0.3 mm.

[0017] Preferably, the base has a length of 30 mm to 40 mm, a width of 25 mm to 35 mm, and a height of 5 mm to 10 mm; the cover has a length of 30 mm to 40 mm, a width of 25 mm to 35 mm, and a height of 3 mm to 5 mm.

[0018] The present application provides a circuit board, comprising the aforementioned metal shielding cover and a circuit board body, wherein the metal shielding cover is soldered to the circuit board body.

[0019] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that a number of protrusions for limiting are provided on the base; and limiting holes are provided on the limiting plate. When the lid is covered on the top of the base, the protrusions are embedded in the limiting holes. Therefore, the lid can be removed from the base. When removing the lid, you only need to buckle the limiting plate to the outside, the protrusions will withdraw from the limiting holes, and then lift the lid up, the lid and the base can be separated, and the electronic components can be exposed for maintenance. After the maintenance is completed, the lid can be put back on the base. Therefore, this is a non-destructive disassembly, the lid will not be damaged, and can be reused.

[0020] In addition, the ribs can improve the strength and stability of the base and prevent the shield from deformation, while the heat dissipation holes facilitate heat dissipation of electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an assembly diagram of an embodiment of the present utility model.

[0022] Figure 2 It is an exploded schematic diagram of an embodiment of the present utility model.

[0023] Description of the accompanying drawings:

[0024] 10. Base; 11. First opening; 12. Second opening; 13. Reinforcement rib; 14. Reinforcement plate; 15. Connecting portion; 16. Raised portion; 17. Welding portion; 18. Second notch; 20. Cover; 21. Limiting plate; 22. First seam; 23. Cover plate; 24. Heat dissipation hole; 25. Limiting hole. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0026] Please refer to Figures 1 to 2 As shown, it shows the specific structure of the preferred embodiment of the present utility model, which is a metal shielding cover.

[0027] Among them, the cover 20 can be removed from the base 10 without damage by the cooperation between the raised portion 16 on the base 10 and the limiting hole 25 on the limiting plate 21. In this process, the cover 20 will not be damaged, can be reused, and is very convenient to remove.

[0028] The present application provides a metal shielding cover, comprising a base 10 and a cover 20 made of metal material; the base 10 is provided with a first opening 11 at the bottom, the base 10 is provided with a second opening 12 at the top, and the second opening 12 is provided with a reinforcing rib 13; the base 10 is provided with a plurality of protrusions 16 for limiting; the cover 20 includes a limiting plate 21 and a cover plate 23; the cover plate 23 is provided with a plurality of heat dissipation holes 24; the limiting plate 21 is provided with a limiting hole 25; the cover 20 covers the top of the base 10, and the protrusions 16 are embedded in the limiting holes 25. The base 10 and the cover 20 can be stamped from stainless steel or tin-plated steel plates. When the cover 20 covers the base 10, the protrusions 16 are embedded in the limiting holes 25, so that the cover 20 and the base 10 can be firmly assembled together. When the cover 20 needs to be removed from the base 10, it is only necessary to gently buckle the limiting plate 21 outward, or gently pry the limiting plate 21 with a screwdriver, so that the protrusion 16 can be withdrawn from the limiting hole 25, and then lift the cover 20 upward, and the cover 20 and the base 10 can be separated. Therefore, this design is a non-destructive disassembly, the cover 20 will not be damaged, and the shielding cover can be reused. The heat dissipation holes 24 not only meet the shielding performance, but also ensure the heat dissipation performance. The reinforcement ribs 13 provided on the second opening 12 can improve the firmness and deformation resistance of the base 10, so that the shielding cover has higher strength and better deformation resistance.

[0029] Preferably, the protrusion 16 is spherical, elliptical, or wedge-shaped. In this embodiment, the protrusion 16 is spherical, which facilitates insertion of the protrusion 16 into the retaining hole 25. The retaining hole 25 can also be any shape, such as circular, elliptical, rectangular, or oblong, without limitation.

[0030] Preferably, the limiting plate 21 is provided with a plurality of first slits 22, and the limiting plate 21 is provided with limiting holes 25 between some of the first slits 22. The number of first slits 22 can be set as needed, and can be one, two, three, four, etc., without specific limitation. The first slits 22 can relieve stress during the stamping of the limiting plate 21 and prevent deformation. In addition, the first slits 22 also facilitate the insertion of the protrusion 16 into the limiting hole 25, or the withdrawal of the protrusion 16 from the limiting hole 25.

[0031] Preferably, the bottom of the wall panel of the base 10 is provided with at least two welding portions 17 protruding downward. The welding portions 17 can be soldered to the circuit board. There are two or more welding portions 17. The welding portions 17 are soldered to the circuit board, while other portions are not soldered to the circuit board. This can reduce the amount of solder and the amount of soldering work.

[0032] Preferably, a connecting portion 15 is provided at the intersection of the reinforcing ribs 13. The connecting portion 15 has a structure in one of a circular, oval, and square shape. In this embodiment, the connecting portion 15 is circular. The connecting portion 15 can improve the connection strength between the reinforcing ribs 13 and improve its stability.

[0033] Preferably, reinforcing plates are provided at the corners of the top of the base. This design helps to enhance the strength and deformation resistance of the base.

[0034] Preferably, a second notch 18 is provided at the top corner of the base 10. The second notch 18 can release the stress of the base 10 during stamping, prevent its deformation, and facilitate stamping of the base 10.

[0035] Preferably, the base 10 and cover 20 are stamped from tin-plated steel sheet, with a thickness ranging from 0.1 to 0.3 mm. Tin-plated steel sheet is easily tinned and soldered to the PCB. Furthermore, #25 tin-plated steel sheet is essentially made of iron, which provides a certain strength and is well formed and resistant to deformation.

[0036] Preferably, the base 10 has a length between 30 mm and 40 mm, a width between 25 mm and 35 mm, and a height between 5 mm and 10 mm; the lid 20 has a length between 30 mm and 40 mm, a width between 25 mm and 35 mm, and a height between 3 mm and 5 mm. The above dimensions are for some products only and are not exhaustive. They can be adjusted based on actual needs.

[0037] The present application provides a circuit board, comprising the aforementioned metal shielding cover and a circuit board body, wherein the metal shielding cover is soldered to the circuit board body.

[0038] The metal shielding cover in the present application has at least the following advantages: 1. Tin-plated steel sheet is essentially an iron material with a certain strength, can be well formed, and is not easily deformed. 2. The cross reinforcement ribs 13 in the middle of the metal shielding cover strengthen the stability of the shielding cover base 10 to prevent deformation. 3. The base 10 adopts the principle of diagonal symmetry and can be welded flatly on the PCB board. 4. There are raised portions 16 on all sides of the base 10. The raised portions 16 are used to position the cover 20 during installation and to lock the cover 20 in place to prevent the cover 20 from becoming too loose and falling off during vibration.

[0039] In summary, the key design feature of this invention lies in the fact that the raised portion 16 on the base 10 cooperates with the retaining hole 25 on the retaining plate 21, allowing the cover 20 to be removed from the base 10 without damage, making the shield reusable and extremely convenient to remove. The reinforcing ribs 13 enhance the strength and stability of the base 10, preventing deformation. The heat dissipation holes 24 facilitate heat dissipation from the electronic components.

[0040] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A metal shield, characterized in that: The invention comprises a base and a cover made of metal material; the bottom of the base is provided with a first opening, the top of the base is provided with a second opening, and the second opening is provided with a reinforcing rib; The base is provided with a plurality of protrusions for limiting position; The cover comprises a limiting plate and a cover plate; the cover plate is provided with a plurality of heat dissipation holes; the limiting plate is provided with a limiting hole; the cover is covered on the top of the base, and the protrusion is embedded in the limiting hole.

2. The metal shield according to claim 1, wherein: The structure of the protrusion is one of spherical, elliptical and wedge-shaped.

3. The metal shield according to claim 1, wherein: The limiting plate is provided with a plurality of first slits, and limiting holes are provided on the limiting plate between some of the first slits.

4. The metal shield according to claim 1, wherein: The bottom of the wall plate of the base protrudes downward and is provided with at least two welding portions.

5. The metal shield according to claim 1, wherein: A connecting portion is provided at the intersection of the reinforcing ribs, and the structure of the connecting portion is one of circular, elliptical and square.

6. The metal shield according to claim 1, wherein: Reinforcement plates are provided at the corners of the top of the base.

7. The metal shield according to claim 1, wherein: A second notch is provided at a top corner of the base.

8. The metal shield according to claim 1, wherein: The base and the cover are stamped from tin-plated steel plates, and the thickness of the tin-plated steel plates is between 0.1 and 0.3 mm.

9. The metal shield according to any one of claims 1 to 8, characterized in that: The base has a length of 30 mm to 40 mm, a width of 25 mm to 35 mm, and a height of 5 mm to 10 mm; the cover has a length of 30 mm to 40 mm, a width of 25 mm to 35 mm, and a height of 3 mm to 5 mm.

10. A circuit board, characterized in that: A metal shielding cover according to any one of claims 1 to 9, and a circuit board body, wherein the metal shielding cover is soldered to the circuit board body.

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