CN201087983Y - Mask structure - Google Patents

Abstract

The utility model relates to a cover locates electronic component's on circuit board and shields cover structure for protect electromagnetic interference, be the electronic component that the cover was located on a circuit board, should shield the cover structure and contain: each frame edge of the frame piece is a wall body, wherein two opposite wall bodies are respectively provided with a buckling hole, and the lower edges of the wall bodies are adjacent to the circuit board so as to arrange the frame piece on the circuit board; and a cover plate, the cover plate is extended with an elastic hook piece respectively corresponding to two edges, the middle section of the elastic hook piece is downward and concaved inwards to form an elastic rib, the two elastic ribs respectively and elastically interfere the two buckling holes, so that the cover plate covers the frame piece, and the shielding cover structure covers the circuit board to cover the electronic element. The utility model discloses can effectively protect electronic component's on the circuit board electromagnetic interference, still can open at any time after installing the circuit board and maintain, inspect or change electronic component to can conveniently cover back again, also can install fast on the circuit board, need not melt soldering tin and also can dismantle and break away from the circuit board.

Description

Mask structure

technical field

The utility model relates to a shielding cover structure, in particular to a shielding cover structure which can be used in electronic equipment to effectively protect the electromagnetic interference of electronic components on the circuit board, and can be opened at any time after being installed on the circuit board for maintenance, inspection or replacement of electronic devices. components, and can be conveniently covered back, and can also be quickly installed on the circuit board without melting the solder and can be disassembled from the shielding structure of the circuit board. .

Background technique

In order to protect against electromagnetic interference (EMI) that may occur on the electronic components on the circuit board, a metal shield structure is often used to cover the electronic components on the circuit board to prevent electromagnetic interference.

The existing known technology has the technology of using a box-shaped shield structure to cover the electronic components, such as China Taiwan Patent No. M303619, M313957, M305566, I256878, etc., but this type of patented technology is fixed behind the electronic components on the circuit board. , it is not easy to disassemble, and it will cause great trouble if the electronic component needs to be repaired or replaced in the future.

Therefore, the patented technology of improving the liftable cover is then born accordingly, such as China Taiwan Patent No. M280636, M255652, etc., which have a liftable upper cover for easy replacement or maintenance of the electronic components in the future, but how firm and convenient , Economical solution The upper cover and the lower cover can be repeatedly connected and opened. The clamping mechanism is the focus of the design. The current known technologies all have different defects. In order to make the clamping firm, it makes the It is inconvenient to lift the upper cover, or the structure is complicated, which increases the cost.

Further, some mask structure technologies are to weld the mask structure on the circuit board, such as China Taiwan Patent No. 00521561 and Patent No. 00508065, etc., the welding action is relatively material and labor-intensive, and the problem of low yield is prone to occur (reliability reduction) is also a defect in the design of this type of technology.

It can be seen that the above-mentioned existing shield structure obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new type of mask structure is one of the current important research and development topics, and it has also become a goal that the industry needs to improve.

In view of the defects in the above-mentioned existing shield structure, the inventor actively researches and innovates based on years of rich practical experience and professional knowledge engaged in the design and manufacture of this type of product, and cooperates with the application of academic theory, in order to create a new type of utilization The shield structure for preventing electromagnetic interference can improve the general existing shield structure and make it more practical. Through continuous research, design, and after repeated trial samples and improvements, the utility model with practical value is finally created.

Contents of the invention

The purpose of this utility model is to overcome the defects of the above-mentioned existing shield structure and provide a new shield structure. The technical problem to be solved is to make it in electronic equipment, by means of a shield structure, It can protect the electromagnetic interference (EMI) of the electronic components on the circuit board, which is very suitable for practical use.

Another object of the present utility model is to provide a new type of shield structure, the technical problem to be solved is to make it possible to open the shield structure at any time after the shield structure is installed on the circuit board for maintenance, Check or replace the electronic components covered by it, and then cover it back conveniently, so that it is more suitable for practical use.

Another object of the present utility model is to provide a shield structure with a new structure. The technical problem to be solved is to make the shield structure easy and fast to install on the circuit board, and after installation, no need Melting solder can also disassemble the mask structure to separate from the circuit board, which is more suitable for practical use.

The purpose of this utility model and the solution to its technical problems are achieved by adopting the following technical solutions. A shielding structure proposed according to the utility model is used to protect electromagnetic interference, and is used to cover electronic components on a circuit board. The shielding structure includes: a frame, and each frame edge of the frame It is a wall, wherein two opposite walls have a fastening hole respectively, and the lower edges of the walls are adjacent to the circuit board, so that the frame is arranged on the circuit board; and a cover plate, the The two opposite edges of the cover plate are respectively extended with an elastic hook piece, the middle section of the elastic hook piece is downward and inwardly recessed to form an elastic rib, and the two elastic ribs respectively elastically interfere with the two fastening holes, so that the cover plate covers the frame.

The purpose of this utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

The aforementioned shield structure, wherein the circuit board has at least one through hole, the lower edge of the wall of the frame member extends downwards with at least one positioning foot, the end of the positioning foot is folded back with an elastic hook, and the positioning foot is from the The top of the circuit board passes through the through hole, and the elastic hook interferes with the lower surface of the circuit board to fix the shielding cover structure.

In the aforementioned shield structure, the elastic hook is folded back from the end of the positioning leg to the outside of the frame.

In the aforementioned shield structure, the elastic hook is folded back from the end of the positioning leg to the inside of the frame.

In the aforementioned shield structure, the end of the elastic hook is further folded back toward the positioning foot.

In the aforementioned shield structure, the frame member and the cover plate are respectively integrally formed by a metal plate.

The aforementioned shield structure, wherein the frame includes adjacent first walls and second walls, the first walls and the second walls are the two ends of the metal plate, the first The end of the wall adjacent to the second wall has a first fastening notch, and the end of the second wall adjacent to the first wall has a second fastening notch, and the first fastening notch is connected to the first fastening notch. The two fastening notches are fastened together, so that the first wall is connected with the second wall.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. It can be seen from the above that, in order to achieve the above purpose, the present invention provides a shield structure for protecting the electromagnetic interference, which is used to cover the electronic components on a circuit board. The shield structure includes a frame and a cover. Each frame edge of the frame is a wall, wherein two opposite walls have a fastening hole respectively, and the lower edges of the walls are adjacent to the circuit board, so that the frame is placed on the circuit board board. The two opposite edges of the cover plate are respectively extended with an elastic hook piece, and the middle section of the elastic hook piece is downward and inwardly recessed to form an elastic rib, and the two elastic ribs respectively elastically interfere with the two fastening holes so that the cover plate covers the frame. Wherein, the frame member and the cover plate are respectively integrally formed by a metal plate.

Further, the circuit board has at least one through hole, and the lower edge of the wall of the frame is extended downward with at least one positioning foot, and the end of the positioning foot is an elastic hook folded back, and the positioning foot is formed from the circuit board. The upper side passes through the through hole, and the elastic hook interferes with the lower surface of the circuit board to fix the shielding cover structure.

By virtue of the above technical solution, the shield structure of the utility model has at least the following advantages and beneficial effects:

1. The utility model can effectively protect the electromagnetic interference of the electronic components on the circuit board in the electronic equipment by virtue of the shielding characteristics of the metal plate of the shielding cover structure.

2. Further, the utility model utilizes the elastic hook part to elastically interfere with the fastening hole, and after the shield structure is installed on the circuit board, the shield structure can be opened at any time for maintenance, inspection or replacement. The covered electronic components can be easily replaced later, which is very convenient to use.

3. In addition, the utility model utilizes the positioning pin and the elastic hook at the end, so that the shield structure can be easily and quickly installed on the circuit board, and after installation, the shield can be disassembled without melting solder The cover structure is separated from the circuit board, which is more suitable for practical use.

To sum up, the utility model relates to a shielding cover structure covering electronic components on a circuit board to protect against electromagnetic interference. The shielding cover structure has a frame with a wall as the frame and a cover plate The opposite two edges of the cover plate are respectively extended to the outside with an elastic hook member, the middle section of the elastic hook member is downward and recessed inward to form an elastic rib, and the two elastic ribs respectively elastically interfere with the frame member relative to each other. The two fastening holes on the wall allow the cover plate to cover the frame, and then the shielding cover structure is set on the circuit board to cover the electronic components. The utility model can effectively protect the electromagnetic interference (EMI) of electronic components on the circuit board in electronic equipment; it can also be opened at any time after the shielding cover structure is installed on the circuit board for maintenance, inspection or replacement of electronic components, and It can be easily covered back; it can also be quickly installed on the circuit board, and can be disassembled and separated from the circuit board without melting the solder after installation. The utility model has the above-mentioned many advantages and practical value, it has great improvement no matter in product structure or function, has remarkable progress in technology, and has produced easy-to-use and practical effect, and compared with the existing shielding cover The structure has enhanced and prominent functions, so it is more suitable for practical use, and it is a novel, progressive and practical new design.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

FIG. 1 is a side cross-sectional view of the shield structure of the present invention assembled on a circuit board.

FIG. 2A is an exploded perspective view of the structure of the mask of the present invention.

FIG. 2B is a schematic diagram of the combined structure of the shield structure of the present invention.

Fig. 3 is a schematic structural view of the frame of the present invention.

30: Shield structure 32: Frame

3202W: Wall 3202WA: The first wall

3202WB: Second wall 3204h: Buckle hole

34: Cover plate 3402: Elastic hook piece

3402R: elastic rib 36: circuit board

3602h: Through hole 38: Positioning foot

3802: Elastic hook 40h: The first buckle gap

42h: The second buckle gap

Detailed ways

In order to further explain the technical means and effects that the utility model adopts for reaching the intended purpose of the invention, the specific implementation, structure, characteristics and features of the shielding structure proposed according to the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments. Efficacy, detailed as follows.

The aforementioned and other technical contents, features and effects of the present utility model will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation, one can get a deeper and more specific understanding of the technical means and effects of the utility model to achieve the intended purpose, but the attached drawings are only for reference and description, and are not used to explain the present invention. Utility models are restricted.

Please refer to FIG. 1 , which is a side cross-sectional view of the shield structure 30 assembled on the circuit board 36 of the present invention. The shield structure 30 for preventing electromagnetic interference in the preferred embodiment of the present invention is used to cover the electronic components on a circuit board 36 . The shield structure 30 includes a frame 32 and a cover 34 .

The above-mentioned circuit board 36 has at least one through hole 3602h, as shown in the illustration, there are two through holes. The lower edge of the wall 3202W of the frame member 32 is provided with at least one positioning foot 38 extending downwards, as shown in the illustration, there are also two. , the end of the positioning foot 38 is an elastic hook 3802 folded back. The positioning pin 38 passes through the through hole 3602h downward from the upper side of the circuit board 36 , and the elastic hook 3802 interferes with the lower surface of the circuit board 36 to fix the shield structure 30 .

Please refer to FIG. 2A and FIG. 2B . FIG. 2A is an exploded perspective view of the shield structure 30 of the present invention, and FIG. 2B is a schematic view of the combined structure of the shield structure 30 of the present invention.

The above-mentioned frame member 32 has a wall body 3202W on each side of the frame, wherein the two opposite walls 3202W (the front and rear wall body 3202W in the figure) respectively have a fastening hole 3204h, and these walls The lower edge of the body 3202W is adjacent to or contacts the circuit board 36 so that the frame member 32 is disposed on the circuit board 36 .

The above-mentioned cover plate 34 has an elastic hook member 3402 extending outwards from its two opposite edges (front and rear edges in the figure), and the middle section of the elastic hook member 3402 is recessed downward and inward to form a Elastic Rib 3402R. The two elastic ribs 3402R are buckled down into the fastening holes 3204h and then elastically interfere with the two fastening holes 3204h, so that the cover plate 34 covers the frame member 32. In this way, not only can it be opened and covered repeatedly, And the operation is very convenient.

Please refer to FIG. 3 , which is a schematic structural diagram of the frame member 32 of the present invention. The frame 32 and the cover 34 are respectively integrally formed by a metal plate. The frame 32 includes adjacent first wall 3202WA and second wall 3202WB, the first wall 3202WA and the second wall 3202WB are the two ends of the metal plate, the first wall 3202WA is adjacent to the second The end of the wall 3202WB has a first fastening notch 40h, the end of the second wall 3202WB adjacent to the first wall 3202WA has a second fastening notch 42h, the first fastening notch 40h is connected with the second buckle The connecting notch 42h is snapped together so that the first wall body 3202WA is connected with the second wall body 3202WB, thereby forming the frame member 32 .

Further description will now be made on the elastic hook 3802 , wherein the elastic hook 3802 can be folded back from the end of the positioning leg 38 to the outside of the frame member 32 , or the elastic hook 3802 can be folded back from the end of the positioning leg 38 to the inside of the frame member 32 . Furthermore, if the end of the elastic hook 3802 can be folded back toward the positioning foot 38, the end of the elastic hook 3802 can easily touch the foreign object, forming a smooth structure that is not easy to interfere with other objects.

Therefore, the electromagnetic interference of the electronic components on the circuit board 36 can be effectively protected in the electronic equipment by virtue of the shielding properties of the metal sheet of the shield structure 30 of the present invention. Further, by using the elastic hook 3402 to elastically interfere with the fastening hole 3204h, after the shield structure 30 is installed on the circuit board 36, the shield structure 30 can be opened at any time for maintenance, inspection, or replacement. The covered electronic components can be easily covered back later. In addition, by using the positioning pin 38 and the elastic hook 3802 at the end, the shield structure 30 of the present invention can also be easily and quickly installed on the circuit board 36, and after installation, the shield can be disassembled without melting the solder. The cover structure 30 can be separated from the circuit board 36, which is very suitable for practical use.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those skilled in the art can use the technical content disclosed above to make some changes or modify them into equivalent embodiments without departing from the technical solution of the present utility model. Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (7)

1. A shielding cover structure, in order to protect electromagnetic interference, is to cover the electronic component that is located on a circuit board, it is characterized in that this shielding cover structure comprises: A frame, each frame side of the frame is a wall, wherein the two opposite walls respectively have a fastening hole, the lower edges of the walls are adjacent to the circuit board, so that the frame is set on the circuit board; and A cover plate, the opposite two edges of the cover plate are respectively extended with an elastic hook member, the middle section of the elastic hook member is downward and inwardly recessed to form an elastic rib, and the two elastic ribs respectively elastically interfere with the Two fastening holes are used to make the cover plate cover the frame. 2. The shield structure according to claim 1, wherein the circuit board has at least one through hole, and the lower edge of the wall of the frame member is provided with at least one positioning foot extending downward, and the positioning foot An elastic hook is folded back at the end, the positioning foot passes through the through hole from above the circuit board, and the elastic hook interferes with the lower surface of the circuit board to fix the shielding cover structure. 3. The shield structure according to claim 2, wherein the elastic hook is folded back from the end of the positioning leg to the outside of the frame. 4. The shield structure according to claim 2, wherein the elastic hook is folded back from the end of the positioning leg toward the inner side of the frame. 5. The shield structure according to claim 2, wherein the end of the elastic hook is further folded back toward the positioning foot. 6 . The shield structure according to claim 1 , wherein the frame member and the cover plate are respectively integrally formed by a metal plate. 6 . 7. The shade structure according to claim 6, wherein the frame member comprises adjacent first wall and second wall, the first wall and the second wall are for the Both ends of the metal plate, the end of the first wall adjacent to the second wall has a first fastening notch, and the end of the second wall adjacent to the first wall has a second fastening notch , the first fastening notch is buckled with the second fastening notch, so that the first wall is connected with the second wall.

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