An anti-interference circuit board metal shielding cover

Abstract

The utility model relates to circuit board shielding case technical field discloses an anti -interference circuit board metal plate shielding case, including circuit board, the top front and back end fixedly connected with the clamping plate of circuit board.

Description

Technical Field

[0001] This utility model relates to the field of circuit board shielding technology, and in particular to an anti-interference circuit board sheet metal shielding cover. Background Technology

[0002] With the rapid popularization and intelligent upgrading of electronic devices, the circuit board, as the core control unit of electronic devices, directly determines the overall performance of the equipment through its operational stability. However, the application scenarios of electronic devices are becoming increasingly complex. Whether it is a control cabinet in industrial production, a base station in the field of communications, or a precision instrument in consumer electronics, they are all in an environment with dense layout of multiple devices and intertwined electromagnetic signals. There are a large number of electromagnetic interference sources in the external environment, such as high-frequency electromagnetic signals radiated by adjacent devices during operation, electromagnetic noise generated by power grid fluctuations, and cross-interference of wireless communication signals. These interference signals can easily penetrate into the circuit board, causing deviations in the operating parameters of circuit components, increased data transmission error rates, and in severe cases, even circuit failure, resulting in equipment downtime, data loss, and other problems. Currently, electromagnetic shielding of circuit boards mostly uses a fully enclosed metal shell to enclose the circuit board. Although it can achieve a certain shielding effect, the fully enclosed structure has a significant heat dissipation bottleneck. The heat generated by the circuit board during operation cannot be dissipated in time and tends to accumulate inside the shell, causing the circuit board's operating temperature to rise, accelerating component aging, and shortening the equipment's lifespan. In addition, the fully enclosed shell needs to be fixed with multiple screws during installation, making the disassembly and assembly process cumbersome and not conducive to the later inspection and maintenance of the circuit board. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an anti-interference circuit board sheet metal shielding cover.

[0004] This utility model is achieved by the following technical solution: an anti-interference circuit board sheet metal shielding cover, including a circuit board, with clamps fixedly connected to the front and rear ends of the top of the circuit board, guide plates fixedly connected to the front and rear ends of the top of the circuit board, a baffle fixedly connected to the right side of the top of the circuit board, a shielding cover provided on the top of the circuit board, and a plug-in slot provided on the left side of the baffle.

[0005] With the above technical solution, two clamping plates and two guide plates are each provided.

[0006] As a further improvement to the above solution, a screw hole is provided on the top of the circuit board.

[0007] As a further improvement to the above scheme, the clamping plate, guide plate and baffle are arranged in order from left to right.

[0008] Through the above technical solution, the clamping plate achieves lateral limiting and clamping fixation of the shielding cover. During installation, the guide block at the bottom of the shielding cover must penetrate the clamping plate. The clamping plate, through its inner wall's contact with the guide block, restricts the shielding cover's lateral displacement, preventing lateral shift due to equipment vibration or external impact. Simultaneously, the clamping force enhances the connection stability between the shielding cover and the circuit board, preventing a decrease in shielding effectiveness due to increased gaps. The guide plate provides precise longitudinal guidance for shielding cover installation. The inner wall of the guide plate slides against the guide rod of the shielding cover, guiding the guide rod along a preset path during installation, ensuring the shielding cover can be smoothly pushed forward in a straight line, avoiding inaccurate alignment between the shielding cover and the baffle / clamping plate due to installation path deviations. Furthermore, the guide plate also helps limit slight forward and backward swaying after installation, further improving structural stability. The baffle enables quick positioning and initial fixation of the right side of the shielding cover. The insertion slot on the left side of the baffle is compatible with the insertion block of the shield. When the shield is pushed to the designated position, the insertion block is inserted into the insertion slot, instantly completing the positioning of the right side of the shield and preventing the shield from being pushed too far in. At the same time, the insertion fit can provide temporary support for the shield before the bolts are fixed, avoiding the shield from shifting during the installation process and facilitating the subsequent bolt tightening operation.

[0009] As a further improvement to the above solution, the shielding cover includes a fixing plate, a plug-in block is fixedly connected to the right side of the shielding cover, heat dissipation grooves are provided at the front and rear ends of the bottom of the shielding cover, a guide rod is fixedly connected to the bottom of the shielding cover, and a guide block is fixedly connected to one side of the inner wall of the heat dissipation groove.

[0010] The above technical solution involves four heat dissipation slots, located on the front and rear sides of the bottom of the shielding cover, with the guide rod positioned in the middle of one end of each slot. These heat dissipation slots address the heat dissipation bottleneck of the shielding cover. While ensuring electromagnetic shielding performance, the slots provide a channel for the heat generated by the circuit board to dissipate, preventing heat accumulation inside the shielding cover and preventing electronic components from aging and degrading due to high temperatures. Furthermore, the design of the heat dissipation slots on both sides creates air convection, improving heat dissipation efficiency, while avoiding the guide rod installation position and not affecting the positioning function of the shielding cover.

[0011] As a further improvement to the above solution, the fixing plate is located on the left side of the shielding cover, the right side of the fixing plate is fixedly connected to the left side of the shielding cover, and a screw hole is provided on the top of the fixing plate.

[0012] Through the above technical solution, the fixing plate achieves a rigid connection between the shielding cover and the circuit board. The fixing plate is fixedly connected to the main body of the shielding cover, ensuring that the two structures are integrated; the screw holes on its top correspond to the screw holes on the circuit board, and after the bolts are tightened, the shielding cover is firmly fixed to the circuit board, which enhances the installation stability of the shielding cover and avoids the increase of the shielding gap due to structural loosening; at the same time, the planar structure of the fixing plate can distribute the pressure when the bolts are tightened, preventing the shielding cover or circuit board from local deformation due to stress.

[0013] As a further improvement to the above solution, the plug-in block is plugged into the plug-in slot.

[0014] As a further improvement to the above solution, the guide rod is slidably connected to the inner wall of the guide plate, and the guide block penetrates the clamping plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a clamping plate, a guide plate, and a baffle. First, the guide rod at the bottom of the shielding cover is aligned with the inner wall of the guide plate on the circuit board. The shielding cover is then pushed along the longitudinal path of the guide plate. The guide plate provides precise guidance for the guide rod, ensuring correct installation trajectory. During the pushing process, the guide block at the bottom of the shielding cover gradually penetrates the clamping plate on the circuit board. The clamping plate forms a lateral clamping limit on the guide block, preventing the shielding cover from shifting left or right. The shielding cover continues to be pushed until the plug-in block on its right side is fully inserted into the plug-in slot of the baffle on the right side of the circuit board, achieving initial positioning and fixation on the right side. Finally, bolts are passed through the screw holes on the left side fixing plate of the shielding cover and tightened with the corresponding screw holes on the top of the circuit board, completing a secure overall fixation. The synergy of these three components eliminates the need for repeated adjustments during installation, significantly improving accuracy while reducing the risk of protection failure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a schematic diagram of the clamping plate structure of this utility model; Figure 4 This is a schematic diagram of the shielding cover structure of this utility model; Figure 5 This utility model Figure 1 Schematic diagram of cross-section.

[0017] Explanation of key symbols: 1. Circuit board; 2. Clamping plate; 3. Guide plate; 4. Baffle; 5. Shielding cover; 51. Fixing plate; 52. Insertion block; 53. Heat dissipation groove; 54. Guide rod; 55. Guide block; 6. Insertion slot. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Example: Please combine Figure 1-5 This embodiment of an anti-interference circuit board sheet metal shielding cover includes a circuit board 1. Clamping plates 2 are fixedly connected to the front and rear ends of the top of the circuit board 1. Guide plates 3 are fixedly connected to the front and rear ends of the top of the circuit board 1. A baffle 4 is fixedly connected to the right side of the top of the circuit board 1. A shielding cover 5 is provided on the top of the circuit board 1. A insertion slot 6 is provided on the left side of the baffle 4. During use, the sheet metal structure of the shielding cover 5 can effectively block external electromagnetic interference signals from entering the circuit board 1, while preventing the electromagnetic signals generated by the circuit board 1 itself from radiating outwards, thus achieving bidirectional anti-interference protection. The four heat dissipation slots 53 at the front and rear ends of the bottom of the shielding cover 5 can provide heat dissipation channels for the heat generated during the operation of the circuit board 1 while ensuring the anti-interference effect, preventing heat accumulation from affecting the working performance of the circuit board 1.

[0020] A screw hole is provided on the top of circuit board 1.

[0021] Clamping plate 2, guide plate 3 and baffle 4 are arranged from left to right.

[0022] The shielding cover 5 includes a fixing plate 51, a plug-in block 52 fixedly connected to the right side of the shielding cover 5, heat dissipation grooves 53 formed at the front and rear ends of the bottom of the shielding cover 5, a guide rod 54 fixedly connected to the bottom of the shielding cover 5, and a guide block 55 fixedly connected to one side of the inner wall of the heat dissipation groove 53. First, align the guide rod 54 at the bottom of the shielding cover 5 with the inner wall of the guide plate 3 on the circuit board 1, and slowly push the shielding cover 5 along the right path of the guide plate 3. At this time, the guide plate 3 provides precise guidance for the guide rod 54, ensuring that the shielding cover 5 moves along the preset trajectory; as the shielding cover 5 is pushed forward... The guide block 55 at its bottom gradually penetrates the clamping plate 2 on the circuit board 1. The clamping plate 2 forms a lateral clamping limit on the guide block 55 to prevent the shielding cover 5 from shifting left and right during movement. Continue to push the shielding cover 5 until the plug-in block 52 on the right side of the shielding cover 5 is fully inserted into the plug-in slot 6 of the right side baffle 4 of the circuit board 1 to achieve the positioning and fixation of the right side of the shielding cover 5. Finally, use bolts to pass through the screw holes on the left side fixing plate 51 of the shielding cover 5 and tighten them with the corresponding screw holes on the top of the circuit board 1 to complete the overall firm fixation of the shielding cover 5 and the circuit board 1.

[0023] The fixing plate 51 is located on the left side of the shielding cover 5. The right side of the fixing plate 51 is fixedly connected to the left side of the shielding cover 5. The top of the fixing plate 51 is provided with screw holes.

[0024] The plug block 52 is plugged into the plug slot 6.

[0025] The guide rod 54 is slidably connected to the inner wall of the guide plate 3, and the guide block 55 passes through the clamping plate 2.

[0026] The implementation principle of the anti-interference circuit board sheet metal shielding cover in this embodiment is as follows: First, align the guide rod 54 at the bottom of the shielding cover 5 with the inner wall of the guide plate 3 on the circuit board 1, and slowly push the shielding cover 5 along the right path of the guide plate 3. At this time, the guide plate 3 provides precise guidance for the guide rod 54, ensuring that the shielding cover 5 moves along the preset trajectory. As the shielding cover 5 is pushed forward, the guide block 55 at its bottom gradually penetrates the clamping plate 2 on the circuit board 1. The clamping plate 2 forms a lateral clamping limit on the guide block 55 to prevent the shielding cover 5 from shifting left and right during the movement. Continue to push the shielding cover 5 until the plug-in block 52 on the right side of the shielding cover 5 is fully inserted into the plug-in slot 6 of the right side baffle 4 of the circuit board 1, thereby achieving the positioning and fixing of the right side of the shielding cover 5. Finally, use bolts to pass through the screw holes on the left side fixing plate 51 of the shielding cover 5 and tighten them with the corresponding screw holes on the top of the circuit board 1 to complete the overall firm fixing of the shielding cover 5 and the circuit board 1. During use, the sheet metal structure of the shielding cover 5 can effectively block external electromagnetic interference signals from entering the circuit board 1, while preventing the electromagnetic signals generated by the circuit board 1 itself from radiating outward, thus achieving two-way anti-interference protection. The four heat dissipation slots 53 at the front and rear ends of the bottom of the shielding cover 5 can provide a heat dissipation channel for the heat generated by the circuit board 1 during operation while ensuring the anti-interference effect, thus avoiding heat accumulation that could affect the working performance of the circuit board 1.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A sheet metal shielding cover for an anti-interference circuit board, characterized in that, The circuit board (1) includes a clamp (2) fixedly connected to the front and rear ends of the top of the circuit board (1), a guide plate (3) fixedly connected to the front and rear ends of the top of the circuit board (1), a baffle (4) fixedly connected to the right side of the top of the circuit board (1), a shield (5) provided on the top of the circuit board (1), and a plug slot (6) provided on the left side of the baffle (4).

2. The anti-interference circuit board sheet metal shielding cover as described in claim 1, characterized in that: The circuit board (1) has a screw hole on its top.

3. The anti-interference circuit board sheet metal shielding cover as described in claim 1, characterized in that: The clamp (2), guide plate (3) and baffle (4) are arranged from left to right.

4. The anti-interference circuit board sheet metal shielding cover as described in claim 1, characterized in that: The shielding cover (5) includes a fixing plate (51), a plug-in block (52) is fixedly connected to the right side of the shielding cover (5), heat dissipation grooves (53) are opened at the front and rear ends of the bottom of the shielding cover (5), a guide rod (54) is fixedly connected to the bottom of the shielding cover (5), and a guide block (55) is fixedly connected to one side of the inner wall of the heat dissipation groove (53).

5. The anti-interference circuit board sheet metal shielding cover as described in claim 4, characterized in that: The fixing plate (51) is located on the left side of the shield (5), and the right side of the fixing plate (51) is fixedly connected to the left side of the shield (5). The top of the fixing plate (51) is provided with screw holes.

6. The anti-interference circuit board sheet metal shielding cover as described in claim 4, characterized in that: The plug block (52) is plugged into the plug slot (6).

7. The anti-interference circuit board sheet metal shielding cover as described in claim 4, characterized in that: The guide rod (54) is slidably connected to the inner wall of the guide plate (3), and the guide block (55) passes through the clamping plate (2).

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