Box body structure with high shielding effectiveness

Abstract

The utility model relates to a box body structure with high shielding effectiveness, which comprises a main box body and a cover plate, the main box body and the cover plate are matched to form a cavity for accommodating a circuit board, the edge position of the cover plate is provided with a clamping plate, the clamping plate is provided with a plurality of elastic combination parts at intervals, and the elastic combination parts are matched with the main box body. The main box body is provided with an installation protruding part matched with the clamping plate, the clamping plate and the installation protruding part are arranged in an overlapped mode, and the elastic combination part abuts against the side face of the installation protruding part. According to the invention, the clamping plate and the mounting convex part which are overlapped are arranged, the plurality of elastic combination parts are distributed on the clamping plate at intervals, and good and reliable contact is formed between the elastic combination parts and the mounting convex part, so that a long seam formed after the main box body and the cover plate are assembled is divided into a plurality of short seams, and the shielding effect can be effectively enhanced.

Description

Technical Field

[0001] This utility model relates to the field of control technology, and more specifically, to a box structure with high shielding effectiveness. Background Technology

[0002] A shielding box is a shielding enclosure of various shapes made of conductive or magnetic materials. It is a metallic body used to confine electromagnetic energy within a certain space and suppress radiated interference. It also processes conducted and radiated electromagnetic fields to provide an interference-free testing environment for the wireless communication equipment under test.

[0003] Existing shielding box structure such as Figures 11 to 13 As shown, it mainly consists of an outer frame 81, a connecting PCB 82, a main PCB 83, an outer cover 84, and screws 85. After assembly, the enclosure is as follows: Figure 12 As shown, due to the relatively flat side structure of the outer casing 84 (such as... Figure 13 As shown in the figure, after the outer cover 84 is assembled with the outer frame 81, the outer cover 84 and the outer frame 81 do not form good contact, resulting in a long gap 9 around the joint of the outer frame 81 and the outer cover 84. Therefore, the electromagnetic waves generated by the PCB circuit board inside the box will leak out in large quantities from the long gap 9, causing the electromagnetic wave radiation to exceed the standard amplitude. This kind of box structure has poor shielding effectiveness and very low reliability. Utility Model Content

[0004] In view of this, the present invention provides a box structure that is easy to install and has high shielding effectiveness.

[0005] A high-shielding-efficiency enclosure structure includes a main enclosure and a cover plate. The main enclosure and the cover plate cooperate to form a cavity for accommodating a circuit board. A retaining plate is provided at the edge of the cover plate. The retaining plate is provided with multiple elastic coupling parts at intervals. The main enclosure is provided with a mounting protrusion that cooperates with the retaining plate. The retaining plate and the mounting protrusion are overlapped. The elastic coupling parts abut against the side of the mounting protrusion.

[0006] In the above technical solution, one side of the main housing is open, and the cover plate is closed on the open side of the main housing. After the cover plate is closed, the retaining plate on the edge of the cover plate is parallel to the mounting protrusion of the main housing and overlaps with it. Since the connection between the main housing and the cover plate is usually the part with relatively weak shielding performance, by setting the retaining plate and the mounting protrusion and making the two overlap, a thicker barrier is formed at the connection between the main housing and the cover plate, which enhances the shielding effect against electromagnetic waves. Multiple elastic joints are distributed at intervals on the retaining plate. The elastic joints are elastic and can swing. When the cover plate is assembled with the main housing, the elastic joints are pushed by the mounting protrusion and move away from the mounting protrusion. After the assembly is completed, the elastic joints are tightly abutted against the side of the mounting protrusion under the action of elastic force.

[0007] To ensure smooth assembly between the main enclosure and the cover plate, a suitable gap needs to be reserved at the connection point of the shielding enclosure, meaning the main enclosure and the cover plate are clearance fit. Therefore, after assembly, a long and narrow gap will be formed around the main enclosure, from which electromagnetic waves can easily radiate, compromising the shielding performance of the enclosure. To ensure smooth assembly while maintaining the shielding effect, this project uses multiple elastic joints that abut against the mounting protrusions to divide the long gap formed after the main enclosure and cover plate are assembled into several short gaps. Compared to the long gap, the short gaps provide better isolation for electromagnetic waves, effectively enhancing the shielding effect. Furthermore, the elastic joints and mounting protrusions form a good and reliable contact, providing a protective grounding effect for the main enclosure and improving safety during use.

[0008] Furthermore, the elastic joint includes a mounting groove and a spring piece installed in the mounting groove, one end of the spring piece being connected to the bottom of the mounting groove.

[0009] In the above technical solution, one end of the spring is connected to the bottom of the mounting groove, and the spring can swing back and forth under the action of external force.

[0010] Furthermore, one side of the spring sheet is provided with a protruding abutment portion, which abuts against the side of the mounting protrusion.

[0011] In the above technical solution, the abutting part is provided on the side of the spring piece close to the mounting protrusion and protrudes from the surface of the spring piece to ensure that it can contact the mounting protrusion.

[0012] Furthermore, the cover plate includes a substrate, and the card plate is disposed at the edge of the substrate and perpendicular to the substrate.

[0013] In the above technical solution, the cover plate consists of a base plate and a retaining plate located at the edge of the base plate. The retaining plate is perpendicular to the base plate, which facilitates assembly with the main housing.

[0014] Furthermore, the substrate is provided with a plurality of protruding top blocks, the top blocks having connection holes, the main housing having connection posts corresponding to the connection holes, and the ends of the connection posts having threaded holes.

[0015] In the above technical solution, after the main housing and the cover plate are assembled, threaded fasteners can be used to lock the main housing and the cover plate together through the connecting holes and the threaded holes at the ends of the connecting columns. After the main housing and the cover plate are assembled, the end of the top block is attached to the internal circuit board. Since the top block is a raised part, it has a certain thickness, which can block electromagnetic waves from radiating outward from the connecting holes to a certain extent, thereby improving the shielding performance.

[0016] Furthermore, the main housing is provided with a partition, which divides the interior of the main housing into a first installation area and a second installation area.

[0017] In the above technical solution, the partition is perpendicular to the end face of the main body, dividing the internal space of the main body into a first installation area and a second installation area to allocate installation positions for different structures, making the internal structure more orderly, and can be used as a reference during assembly, which facilitates the assembly work.

[0018] Furthermore, the first mounting area is equipped with a main circuit board and an adapter circuit board, and one side of the main circuit board and the adapter circuit board is connected to multiple connectors, which are located in the second mounting area.

[0019] In the above technical solution, the main circuit board and the adapter circuit board are located in the first mounting area. Multiple connectors are provided on the same side of the main circuit board and the adapter circuit board. The connectors are used to electrically connect with the main circuit board and the adapter circuit board. The partition is provided with a clearance or clearance structure. All the connectors are located in the second mounting area.

[0020] Furthermore, the main circuit board is also provided with a plug-in part, which is located in the second mounting area. The plug-in part includes a plug box, and the inner surface of the main housing is provided with a fixing groove for installing the plug box.

[0021] In the above technical solution, the plug-in part includes multiple plugs and pin headers for connecting to the main circuit board. The plugs and pin headers are placed inside the plug-in box. The inner side of the main body is provided with a fixing groove for the installation and placement of the plug-in box.

[0022] Furthermore, the outer side of the plug-in box is provided with a protruding limiting block, and the mounting groove is provided with a limiting hole that cooperates with the limiting block.

[0023] In the above technical solution, after the main circuit board is installed inside the main housing, the limiting block is inserted into the limiting hole to limit and fix the plug box.

[0024] Furthermore, the main circuit board and the adapter circuit board are spaced apart, and a shield is provided in the space between the main circuit board and the adapter circuit board. The two ends of the shield are respectively connected to the main circuit board and the adapter circuit board.

[0025] In the above technical solution, the main circuit board and the adapter circuit board are spaced apart, and the shielding cover is located in the gap between the two to block electromagnetic wave radiation in the gap between the two circuit boards, prevent electromagnetic waves from leaking out of the gap, and enhance the shielding effect.

[0026] Compared with the prior art, this application has the following beneficial effects:

[0027] The cover plate of this application has a retaining plate on its edge, and the main housing has a matching mounting protrusion. After assembly, the retaining plate overlaps with the mounting protrusion, thereby forming a thicker barrier at the connection between the main housing and the cover plate, enhancing the shielding effect against electromagnetic waves. The retaining plate has multiple elastic joints distributed at intervals, facilitating the assembly of the cover plate and the main housing. After the cover plate and the main housing are assembled, the elastic joints can divide the long seam formed by the assembly of the main housing and the cover plate into several short seams. Compared with the long seams, the short seams have a better isolation effect against electromagnetic waves, which can effectively enhance the shielding effect. Furthermore, the elastic joints and the mounting protrusions form a good and reliable contact, which can provide a protective grounding effect for the main housing, improving safety during use. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of a box structure according to one embodiment.

[0030] Figure 2 This is a perspective view of a box structure according to one embodiment.

[0031] Figure 3 This is a perspective view of the cover plate.

[0032] Figure 4 for Figure 3 A magnified view of position A in the middle.

[0033] Figure 5 This is a top view of the box structure of this application (after assembly).

[0034] Figure 6 for Figure 5 A cross-sectional view at position AA.

[0035] Figure 7 for Figure 6 A magnified view of position B in the middle.

[0036] Figure 8 This is a structural schematic diagram of the main housing (bottom view, before the main circuit board is installed).

[0037] Figure 9 This is a structural schematic diagram of the main housing (bottom view, after the main circuit board is installed).

[0038] Figure 10 This is a schematic diagram of the structure of the shielding cover.

[0039] Figure 11 This is an exploded view of a shielding enclosure in the prior art.

[0040] Figure 12 This is a perspective view of a shielding enclosure in the prior art.

[0041] Figure 13 This is a schematic diagram of the structure of the outer casing 84 described in the prior art.

[0042] Explanation of the reference numerals in the figure:

[0043] 1-Main housing; 11-Mounting protrusion; 12-Partition; 13-First mounting area; 14-Second mounting area; 15-Mounting groove; 151-Limiting hole; 16-Connecting post; 17-Fixing post; 2-Cover plate; 21-Clamping plate; 211-Elastic joint; 2111-Fixing groove; 2112-Spring; 2113-Abutting part; 22-Base plate; 221-Top block; 2211-Connecting hole; 3-Main circuit board; 31-Plug-in box; 311-Limiting block; 32-Thermal conductive interface material; 4-Adapter circuit board; 5-Connector; 6-Shielding cover; 7-Screw;

[0044] 81-Outer shell frame; 82-Adapter PCB; 83-Main PCB; 84-Outer shell cover; 85-Screws; 9-Long seam. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] Please refer to Figures 1 to 10A preferred embodiment of this application provides a box structure with high shielding effectiveness, comprising a main box 1 and a cover plate 2. The main box 1 and the cover plate 2 cooperate to form a cavity for accommodating a circuit board. A retaining plate 21 is provided at the edge of the cover plate 2, and multiple elastic coupling portions 211 are spaced apart on the retaining plate 21. The main box 1 is provided with a mounting protrusion 11 that cooperates with the retaining plate 21. The retaining plate 21 and the mounting protrusion 11 are overlapped, and the elastic coupling portions 211 abut against the side of the mounting protrusion 11. One side of the main box 1 is open, and the cover plate 2 covers the open side of the main box 1. After closing, the retaining plate 21 at the edge of the cover plate 2 is parallel to and partially overlaps with the mounting protrusion 11 of the main box 1. Since the connection between the main box 1 and the cover plate 2 is usually a part with relatively weak shielding performance, by setting the retaining plate 21 and the mounting protrusion 11 and making them overlap, the shielding performance of the main box 1 is significantly improved. The connection between the cover plate 1 and the cover plate 2 forms a thicker barrier, enhancing the shielding effect against electromagnetic waves. Multiple elastic joints 211 are spaced apart on the cover plate 21. These elastic joints 211 are elastic and can swing. When the cover plate 2 is assembled with the main housing 1, the elastic joints 211 are pushed by the mounting protrusion 11 and move away from the mounting protrusion 11. After assembly, the elastic joints 211, under the action of elasticity, tightly abut against the side of the mounting protrusion 11. Multiple elastic joints 211 divide the long seam formed after the main housing 1 and the cover plate 2 are assembled into several short seams. Compared to the long seams, the short seams provide better isolation against electromagnetic waves, effectively enhancing the shielding effect. Furthermore, the elastic joints 211 and the mounting protrusion 11 form a good and reliable contact, providing a protective grounding effect for the main housing 1 and improving safety during use.

[0049] Preferably, please refer to Figure 8 and Figure 9 In order to reserve the installation position of the connection structure on one side of the shielding box to facilitate the connection between the inside of the shielding box and the outside, the installation protrusions 11 are only provided on the rear and left and right sides of the main box 1. The front side of the shielding box is the installation position of the subsequent connection structure, so no installation protrusions 11 are provided. Correspondingly, the cover plate 2 is provided with elastic joints 211 on three of the three clamping plates 21, corresponding to the three installation protrusions 11.

[0050] Please refer to Figure 3 and Figure 4 In this embodiment, the elastic joint 211 includes a mounting groove 15 and a spring piece 2112 installed in the mounting groove 15. One end of the spring piece 2112 is connected to the bottom of the mounting groove 15, and the spring piece 2112 can swing back and forth under the action of external force.

[0051] Specifically, please refer to Figures 5 to 7After the main body 1 and the cover plate 2 are installed, the clamping plate 21 covers the mounting protrusion 11 from the outside and the spring piece 2112 abuts against the outer surface of the mounting protrusion 11. In this way, when installing, the spring piece 2112 opens outward under the pushing force of the mounting protrusion 11, so that the cover plate 2 can be fitted onto the mounting protrusion 11, which is more convenient for installation. In addition to the above setting, the mounting protrusion 11 can also cover the clamping plate 21, so that the spring piece 2112 abuts against the inner surface of the mounting protrusion 11.

[0052] Please refer to Figure 3 and Figure 4 In this embodiment, a protruding abutment portion 2113 is provided on one side of the spring piece 2112. The grounding portion is conical, and its top end abuts against the outer surface of the mounting protrusion 11. The protruding abutment portion 2113 can ensure contact with the mounting protrusion 11, ensuring that the long gap formed after the main housing 1 and the cover plate 2 are assembled is divided into several short gaps, thus ensuring the shielding effect against electromagnetic interference.

[0053] Please refer to Figure 3 In this embodiment, the cover plate 2 includes a base plate 22, and a retaining plate 21 is disposed on the edge of the base plate 22 and perpendicular to the base plate 22. The vertical retaining plate 21 makes it more convenient to assemble with the main housing 1.

[0054] Please refer to Figure 3 In this embodiment, the substrate 22 is provided with a plurality of protruding top blocks 221, and the top blocks 221 are provided with connection holes 2211. The main housing 1 is provided with a connecting post 16 corresponding to the connection hole 2211. The end of the connecting post 16 is provided with a threaded hole. After the main housing 1 and the cover plate 2 are assembled, the main housing 1 and the cover plate 2 are locked together by screws 7 through the connection hole 2211 and the threaded hole at the end of the connecting post 16. After the main housing 1 and the cover plate 2 are assembled, the end of the top block 221 is attached to the internal circuit board. Since the top block 221 is a protrusion, it has a certain thickness, which can block electromagnetic waves from radiating outward from the connection hole 2211 to a certain extent, thereby improving the shielding performance.

[0055] Please refer to Figure 8 and Figure 9 In this embodiment, the main housing 1 is provided with a partition 12, which is perpendicular to the inner surface of the main housing 1. The partition 12 divides the space inside the main housing 1 into a first installation area 13 and a second installation area 14 to allocate installation positions for different structures, making the internal structure more orderly and serving as a reference during assembly, thus facilitating the assembly work.

[0056] Please refer to Figure 1 , Figure 8 and Figure 9In this embodiment, the first mounting area 13 is equipped with a main circuit board 3 and a transition circuit board 4. A plurality of connectors 5 are connected to one side of the main circuit board 3 and the transition circuit board 4. The connectors 5 are located in the second mounting area 14 and are used to electrically connect with the main circuit board 3 and the transition circuit board 4. The partition 12 is provided with a clearance or clearance structure so that the plurality of connectors 5 are installed in the second mounting area 14, which facilitates the subsequent connection of the shielding box with the outside world.

[0057] Specifically, multiple thermal interface materials 32 are also attached to the main circuit board 3 to ensure the normal use of the main circuit board 3.

[0058] Please refer to Figure 8 and Figure 9 In this embodiment, the main circuit board 3 is also provided with a plug-in part, which is located in the second mounting area 14. The plug-in part includes a plug box 31 and a plurality of plugs and pins for connecting with the main circuit board 3. The plugs and pins are arranged in the plug box 31. The inner surface of the main housing 1 is provided with a fixing groove 2111 for installing the plug box 31, which is used for the installation and placement of the plug box 31. The fixing groove 2111 is located in the second mounting area 14.

[0059] Please refer to Figure 1 , Figure 8 and Figure 9 In this embodiment, the outer side of the plug box 31 is provided with two protruding limiting blocks 311, and the mounting groove 15 has two limiting holes 151 that cooperate with the limiting blocks 311. After the main circuit board 3 is installed inside the main housing 1, the limiting blocks 311 are inserted into the limiting holes 151, thereby limiting and fixing the plug box 31.

[0060] Please refer to Figures 8 to 10 In this embodiment, the main circuit board 3 and the adapter circuit board 4 are spaced apart, and a shielding cover 6 is provided in the gap between the main circuit board 3 and the adapter circuit board 4. The two ends of the shielding cover 6 are respectively connected to the main circuit board 3 and the adapter circuit board 4 to block electromagnetic wave radiation in the gap between the two circuit boards, preventing electromagnetic waves from leaking through the gap and enhancing the shielding effect; preferably, as... Figure 10 As shown, the shielding cover 6 has an L-shaped structure with a hole at its bottom. The adapter circuit board 4 also has a corresponding hole. The adapter circuit board 4 is connected and fixed to the fixing post 17 inside the main housing 1 by screws 7. The other end of the shielding cover 6 abuts against the main circuit board 3.

[0061] It should be noted that when there is only one circuit board inside the shielding box, the shielding cover 6 is not required.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0063] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A housing structure with high shielding effectiveness, comprising a main housing and a cover plate, wherein the main housing and the cover plate cooperate to form a cavity for accommodating a circuit board, characterized in that, A retaining plate is provided at the edge of the cover plate, and multiple elastic connecting parts are provided at intervals on the retaining plate. The main body is provided with a mounting protrusion that cooperates with the retaining plate. The retaining plate and the mounting protrusion are overlapped, and the elastic connecting parts abut against the side of the mounting protrusion.

2. The enclosure structure with high shielding effectiveness according to claim 1, characterized in that, The elastic joint includes a mounting groove and a spring piece installed in the mounting groove, one end of which is connected to the bottom of the mounting groove.

3. The enclosure structure with high shielding effectiveness according to claim 2, characterized in that, One side of the spring sheet has a protruding abutment portion, which abuts against the side of the mounting protrusion.

4. The enclosure structure with high shielding effectiveness according to claim 1, characterized in that, The cover plate includes a base plate, and the card plate is disposed on the edge of the base plate and perpendicular to the base plate.

5. The enclosure structure with high shielding effectiveness according to claim 4, characterized in that, The substrate has multiple raised top blocks with connecting holes. The main housing has connecting posts corresponding to the connecting holes, and the ends of the connecting posts have threaded holes.

6. The enclosure structure with high shielding effectiveness according to claim 1, characterized in that, The main housing is equipped with a partition, which divides the interior of the main housing into a first installation area and a second installation area.

7. The enclosure structure with high shielding effectiveness according to claim 6, characterized in that, The first mounting area is equipped with a main circuit board and an adapter circuit board. Multiple connectors are connected to one side of the main circuit board and the adapter circuit board. The connectors are located in the second mounting area.

8. The enclosure structure with high shielding effectiveness according to claim 7, characterized in that, The main circuit board is also provided with a plug-in part, which is located in the second mounting area. The plug-in part includes a plug box, and the inner surface of the main housing is provided with a fixing groove for installing the plug box.

9. The enclosure structure with high shielding effectiveness according to claim 8, characterized in that, The outer side of the plug box is provided with a protruding limiting block, and the mounting groove is provided with a limiting hole that cooperates with the limiting block.

10. The enclosure structure with high shielding effectiveness according to claim 7, characterized in that, The main circuit board and the adapter circuit board are spaced apart, and a shield is provided in the space between the main circuit board and the adapter circuit board. The two ends of the shield are respectively connected to the main circuit board and the adapter circuit board.

Images