Anti-interference circuit board

Abstract

The utility model discloses an anti-interference circuit board which comprises a bottom shielding mounting plate, a circuit board is arranged at the top of the bottom shielding mounting plate, and a shielding device is arranged at the top of the circuit board. The shielding device comprises a shielding protective cover arranged at the top of the bottom shielding mounting plate and located on the outer side of the circuit board, a hose communicated with the left side of the shielding protective cover, two exhaust pipes communicated with the right side of the hose, and second metal shielding nets fixedly mounted in the exhaust pipes. Through cooperation between the bottom shielding installation plate and the shielding device, installation and accommodation of the circuit board are realized, thereby realizing protection of the circuit board, and preventing external interference signals from influencing the circuit board and further influencing the performance of the circuit board. And meanwhile, the problems that the use performance of the circuit board is affected and the actual use requirement cannot be met due to the fact that a traditional circuit board is not provided with a protection device in actual use and is subjected to external electromagnetic interference in actual use are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to an anti-interference type circuit board. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum base board, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed circuit board, etc. Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Circuit boards are easily affected by external electromagnetic interference in actual use, which affects subsequent use.

[0003] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the traditional circuit boards are not provided with protective devices during actual use, which results in external electromagnetic interference during actual use, thereby affecting the performance of the circuit boards and failing to meet actual use needs; therefore, an anti-interference circuit board is proposed to address the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-interference circuit board, which has the advantage of being able to protect the circuit board from electromagnetic interference, and solves the problem that the traditional circuit board is not provided with a protective device during actual use, resulting in external electromagnetic interference during actual use, thereby affecting the performance of the circuit board and failing to meet actual use needs.

[0005] To achieve the above object, the utility model provides the following technical solution: an anti-interference circuit board, comprising a bottom shielding mounting plate, a circuit board is arranged on the top of the bottom shielding mounting plate, and a shielding device is arranged on the top of the circuit board;

[0006] The shielding device includes a shielding protective cover arranged on the top of the bottom shielding mounting plate and located on the outside of the circuit board, a hose connected to the left side of the shielding protective cover, two exhaust pipes connected to the right side of the hose, and a second metal shielding net fixedly installed inside the exhaust pipes. A groove is opened on the right side of the shielding protective cover, and a limit plate is fixedly installed on the top of the bottom shielding mounting plate, and the limit plate extends to the inside of the groove.

[0007] Preferably, two first mounting seats are fixedly installed on both sides of the shielding protective cover, and first bolts are inserted into the interior of the first mounting seats. The bottom of the first bolt passes through the interior of the bottom shielding mounting plate and is rotatably connected to the bottom shielding mounting plate through threads.

[0008] The effects achieved by the above components are: the fixed connection of the shielding protective cover relative to the bottom shielding mounting plate is achieved through the cooperation between the first mounting seat and the first bolt, and at the same time, the shielding protective cover is easy to disassemble and the circuit board is easy to install and maintain.

[0009] Preferably, the end of the hose is connected to a mounting cover, a first shielding metal mesh is fixedly mounted on the outer side of the mounting cover, and second mounting seats are fixedly mounted on both sides of the mounting cover.

[0010] The effects achieved by the above components are: shielding the signal through the provision of the first shielding metal mesh, preventing interference signals from entering the interior of the shielding protective cover through the hose and the mounting cover to affect the performance of the circuit board.

[0011] Preferably, a mounting rod is fixedly mounted inside the mounting cover, a motor is fixedly mounted on the front side of the mounting rod, and an output end of the motor passes through the mounting rod and is fixedly mounted with a fan blade.

[0012] The effects achieved by the above components are: through the cooperation between the fan blades and the motor, the external air is sent to the inside of the shielding protective cover to cool the circuit board; at the same time, the air and heat inside the shielding protective cover are discharged under the action of the exhaust pipe, and the signal is shielded by the second metal shielding net installed inside the exhaust pipe to prevent external interference signals from entering the inside of the shielding protective cover through the exhaust pipe and affecting the circuit board.

[0013] Preferably, four support blocks are arranged on the top of the bottom shielding mounting plate, and second bolts are inserted into the interior of the circuit board, and the bottom of the second bolts passes through the support blocks and is threadedly connected to the top of the bottom shielding mounting plate.

[0014] The effects achieved by the above components are: supporting the circuit board through the setting of the support block, and installing the circuit board to increase the stability of the circuit board through the setting of the second bolt.

[0015] Preferably, four through cavities are provided inside the bottom shielding mounting plate and outside the shielding protective cover, and third bolts are inserted into the through cavities.

[0016] The effect achieved by the above components is: the bottom shielding mounting plate is installed through the cooperation between the through cavity and the third bolt.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The utility model realizes installation and accommodation of the circuit board through the cooperation between the bottom shielding mounting plate and the shielding device, thereby realizing protection of the circuit board, preventing external interference signals from affecting the circuit board and thus affecting the performance of the circuit board, and at the same time solves the problem that the traditional circuit board is subjected to external electromagnetic interference during actual use due to the need to set a protective device during actual use, thereby affecting the performance of the circuit board and failing to meet actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the bottom shielding mounting plate and the circuit board of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the shielding protective cover of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the heat dissipation mechanism of the utility model.

[0023] In the figure: 1. bottom shielding mounting plate; 2. through cavity; 3. shielding device; 301. shielding protective cover; 302. exhaust pipe; 303. first mounting seat; 304. second metal shielding net; 305. limit plate; 306. first bolt; 307. groove; 4. hose; 5. mounting cover; 6. first shielding metal net; 7. circuit board; 8. fan blade; 9. mounting rod; 10. motor; 11. second mounting seat; 12. support block; 13. second bolt; 14. third bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , an anti-interference circuit board, comprising a bottom shielding mounting plate 1, a circuit board 7 is arranged on the top of the bottom shielding mounting plate 1, and a shielding device 3 is arranged on the top of the circuit board 7;

[0026] The shielding device 3 includes a shielding protective cover 301 arranged on the top of the bottom shielding mounting plate 1 and located on the outside of the circuit board 7, a hose 4 connected to the left side of the shielding protective cover 301, two exhaust pipes 302 connected to the right side of the hose 4, and a second metal shielding net 304 fixedly installed inside the exhaust pipes 302. A groove 307 is opened on the right side of the shielding protective cover 301, and a limiting plate 305 is fixedly installed on the top of the bottom shielding mounting plate 1, and the limiting plate 305 extends to the inside of the groove 307.

[0027] Specifically, two first mounting seats 303 are fixedly installed on both sides of the shielding protective cover 301, and first bolts 306 are inserted into the interior of the first mounting seats 303. The bottom of the first bolt 306 penetrates into the interior of the bottom shielding mounting plate 1 and is rotatably connected to the bottom shielding mounting plate 1 through threads.

[0028] The first mounting seat 303 and the first bolt 306 cooperate to achieve fixed connection of the shielding protective cover 301 relative to the bottom shielding mounting plate 1 , while facilitating disassembly of the shielding protective cover 301 and installation and maintenance of the circuit board 7 .

[0029] Specifically, the end of the hose 4 is connected to a mounting cover 5 , a first shielding metal mesh 6 is fixedly mounted on the outer side of the mounting cover 5 , and second mounting seats 11 are fixedly mounted on both sides of the mounting cover 5 .

[0030] The signal is shielded by the provision of the first shielding metal mesh 6 , so as to prevent interference signals from entering the inside of the shielding protective cover 301 through the hose 4 and the mounting cover 5 and affecting the performance of the circuit board 7 .

[0031] Specifically, a mounting rod 9 is fixedly installed inside the mounting cover 5 , a motor 10 is fixedly installed on the front side of the mounting rod 9 , and an output end of the motor 10 passes through the mounting rod 9 and is fixedly installed with a fan blade 8 .

[0032] Through the cooperation between the fan blades 8 and the motor 10, external air is delivered to the interior of the shielding protective cover 301 to cool the circuit board 7. At the same time, the air and heat inside the shielding protective cover 301 are discharged under the action of the exhaust pipe 302. The signal is shielded by the second metal shielding net 304 installed inside the exhaust pipe 302 to prevent external interference signals from entering the interior of the shielding protective cover 301 through the exhaust pipe 302 and affecting the circuit board 7.

[0033] Specifically, four support blocks 12 are arranged on the top of the bottom shielding mounting plate 1 , and second bolts 13 are inserted into the circuit board 7 . The bottom of the second bolt 13 passes through the support blocks 12 and is threadedly connected to the top of the bottom shielding mounting plate 1 .

[0034] The support block 12 is provided to support the circuit board 7 , and the second bolt 13 is provided to install the circuit board 7 to increase the stability of the circuit board 7 .

[0035] Specifically, four through cavities 2 are provided inside the bottom shielding mounting plate 1 and outside the shielding protective cover 301 , and third bolts 14 are inserted into the through cavities 2 .

[0036] The bottom shielding mounting plate 1 is installed through the cooperation between the through cavity 2 and the third bolt 14 .

[0037] When in use, the bottom shielding mounting plate 1 is fixed at the desired position through the through cavity 2 and the third bolt 14, the support block 12 is placed on the top of the bottom shielding mounting plate 1, and the circuit board 7 is placed on the top of the support block 12. At the same time, the second bolt 13 is inserted into the inside of the circuit board 7 and the support block 12 and connected to the top of the bottom shielding mounting plate 1 through a thread. After the connection is completed, the cable is connected to the circuit board 7 and the cable is extended from the top of the limit plate 305 on the right side of the bottom shielding mounting plate 1, the shielding protective cover 301 is covered on the top of the bottom shielding mounting plate 1, and the circuit board is 7 is covered under the shielding protective cover 301, and the groove 307 on the right side of the shielding protective cover 301 is sleeved on the outside of the limiting plate 305 and the cable is connected and fixed. After the fixing is completed, the installation cover 5 is picked up and fixed to the required position through the second mounting seat 11. In actual use, the fan blades 8 are driven by the motor 10 to pressurize the external air and send it to the inside of the hose 4. The air is sent to the inside of the shielding protective cover 301 through the hose 4 to cool the components inside the circuit board 7. The air and heat inside the shielding protective cover 301 are discharged through the exhaust pipe 302.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-interference circuit board, comprising a bottom shielding mounting plate (1), characterized in that: A circuit board (7) is arranged on the top of the bottom shielding mounting plate (1), and a shielding device (3) is arranged on the top of the circuit board (7); The shielding device (3) comprises a shielding protective cover (301) arranged on the top of the bottom shielding mounting plate (1) and located on the outside of the circuit board (7), a hose (4) connected to the left side of the shielding protective cover (301), two exhaust pipes (302) connected to the right side of the hose (4), and a second metal shielding net (304) fixedly installed inside the exhaust pipe (302), a groove (307) is opened on the right side of the shielding protective cover (301), and a limit plate (305) is fixedly installed on the top of the bottom shielding mounting plate (1), and the limit plate (305) passes through the inside of the groove (307).

2. The anti-interference circuit board according to claim 1, characterized in that: Two first mounting seats (303) are fixedly mounted on both sides of the shielding protective cover (301), and first bolts (306) are inserted into the interior of the first mounting seats (303). The bottom of the first bolt (306) penetrates into the interior of the bottom shielding mounting plate (1) and is rotatably connected to the bottom shielding mounting plate (1) via threads.

3. The anti-interference circuit board according to claim 1, characterized in that: The end of the hose (4) is connected to a mounting cover (5), a first shielding metal mesh (6) is fixedly mounted on the outer side of the mounting cover (5), and second mounting seats (11) are fixedly mounted on both sides of the mounting cover (5).

4. The anti-interference circuit board according to claim 3, characterized in that: A mounting rod (9) is fixedly mounted inside the mounting cover (5), a motor (10) is fixedly mounted on the front side of the mounting rod (9), and an output end of the motor (10) passes through the mounting rod (9) and is fixedly mounted with a fan blade (8).

5. The anti-interference circuit board according to claim 1, characterized in that: Four support blocks (12) are arranged on the top of the bottom shielding mounting plate (1), and a second bolt (13) is inserted into the interior of the circuit board (7), and the bottom of the second bolt (13) passes through the support block (12) and is threadedly connected to the top of the bottom shielding mounting plate (1).

6. The anti-interference circuit board according to claim 1, characterized in that: The bottom Four through cavities (2) are provided inside the shielding installation plate (1) and outside the shielding protective cover (301). A third bolt (14) is inserted into the interior of the through cavity (2).

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