Corrosion-resistant power supply wiring board

Abstract

The application relates to the technical field of power supply circuit boards, in particular to a corrosion-resistant power supply circuit board, which comprises an upper mounting frame, characterized in that the bottom of the upper mounting frame is provided with a mounting frame, the bottom of the mounting frame is provided with a lower mounting frame, the two sides of the upper mounting frame are provided with ventilation assemblies, and the back of the upper mounting frame is provided with a drying assembly. The upper mounting frame, the mounting frame, the lower mounting frame, the first side frame and the second side frame are arranged, so that the corrosion-resistant installation and use operation of the power supply circuit board can be better adapted to the equipment. In actual use, the power supply circuit board to be installed and used is first placed into the mounting frame, the power supply circuit board can be attached to the mounting rubber ring on the inner wall of the mounting frame, the center installation is carried out in the mounting frame, and then the mounting frame is directly placed between the upper mounting frame and the lower mounting frame.

Description

Technical Field

[0001] This invention relates to the field of power circuit board technology, specifically to a corrosion-resistant power circuit board. Background Technology

[0002] Circuit boards, also known as printed circuit boards or rigid-flex boards, are formed by combining flexible and rigid circuit boards through processes such as lamination, according to relevant technological requirements. This results in a circuit board with both FPC and PCB characteristics. Circuit board repair is an emerging repair industry. As industrial equipment becomes increasingly automated, the number of industrial control boards in various industries is also increasing. The high cost of replacing damaged industrial control boards has become a major headache for many companies. Existing power circuit boards have poor corrosion resistance and are easily corroded after a period of use due to their working environment, which seriously affects their service life.

[0003] For example, patent document CN 114423143 B discloses a circuit board, particularly a corrosion-resistant power circuit board. The purpose of this invention is to provide a corrosion-resistant power circuit board capable of maintaining a dry environment. A corrosion-resistant power circuit board includes a circuit board body, a first fixing frame, a fixed heat sink, connecting wires, and a humidity sensor. The top of the circuit board body is provided with a first fixing frame that has acid and alkali corrosion resistance and good thermal conductivity. Fixed heat sinks for heat dissipation are provided on both the front and rear sides of the left side of the first fixing frame. A connecting wire connects the left side of the first fixing frame to the left side of the circuit board body. A humidity sensor for monitoring the corrosion-resistant power circuit board is provided on the front fixed heat sink. The heat emitted by the heating wire is blown onto the circuit board body by a fan, thereby uniformly drying the circuit board body and keeping it dry, preventing it from becoming damp and corroded.

[0004] However, in actual use, due to its structural limitations, this structure often only allows for the integrated installation of the power circuit board and the mounting structure. After continuous use, the surface of the power circuit board is prone to developing indelible corrosion, making disassembly and reassembly extremely inconvenient and preventing the cleaning of the corroded areas. Furthermore, the simple open installation of the power circuit board makes it easily susceptible to corrosion from the external environment, hindering proper installation and use. Additionally, the equipment cannot perform synchronized and uniform drying and anti-corrosion treatment of the power circuit board during use, failing to meet daily usage requirements. Therefore, there is an urgent need to design a corrosion-resistant power circuit board to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a corrosion-resistant power circuit board to solve the problems mentioned in the background art. In practical use, due to structural limitations, existing structures often require the power circuit board and mounting structure to be integrated. After continued use, the surface of the power circuit board easily accumulates unremovable corrosion, making disassembly and reassembly extremely inconvenient and preventing cleaning of the corroded areas. However, simple open installation of the power circuit board makes it easily corroded by the external environment, hindering proper installation and use. Furthermore, the equipment cannot perform synchronized and more uniform drying and anti-corrosion treatment of the power circuit board during use, failing to meet daily usage requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a corrosion-resistant power circuit board, comprising an upper mounting bracket, characterized in that: a mounting frame is provided at the bottom of the upper mounting bracket, a lower mounting bracket is provided at the bottom of the mounting frame, ventilation components are provided on both sides of the upper mounting bracket, and a drying component is provided on the back of the upper mounting bracket;

[0007] The ventilation assembly includes a first side frame and a second side frame. The first side frame is movably connected to one side of the upper mounting frame, the mounting frame, and the lower mounting frame, and the second side frame is movably connected to the other side of the upper mounting frame, the mounting frame, and the lower mounting frame. A first side cover is fitted on the outer surface of the first side frame, and a second side cover is fitted on the outer surface of the second side frame.

[0008] The drying assembly includes a fan back frame, which is movably connected to the back of the upper mounting frame. A cooling fan is provided on the back of the fan back frame, and a heat insulation pad is provided on the front of the fan back frame.

[0009] Preferably, an upper control frame is fixedly connected to the top of the fan back frame, a lower control frame is fixedly connected to the bottom of the fan back frame, a ventilation top frame is fixedly connected to the front of the upper control frame, a ventilation bottom frame is fixedly connected to the front of the lower control frame, a sealing ring is provided at the edge between the ventilation top frame and the ventilation bottom frame, a uniform airflow conical groove is provided between the ventilation top frame and the ventilation bottom frame, a ventilation ring seat is provided at the center of the uniform airflow conical groove, and a ventilation ring grille is provided on the inner wall of the ventilation ring seat.

[0010] Preferably, the upper air control frame has an air control groove inside, and the two ends of the upper air control frame are provided with torque shafts. The air control groove is movably connected to an air control baffle through the torque shafts.

[0011] Preferably, a heating frame is fixedly connected to the front of the cooling fan, an electric heating rod is provided inside the heating frame, a ventilation grille is provided on the front of the heating frame, and snap fasteners are provided on both sides of the cooling fan, with an inlet filter element movably connected inside the snap fasteners.

[0012] Preferably, a fixed front frame is movably connected to the front of the upper mounting frame, a cover frame is provided on the inner wall of the fixed front frame, an exhaust inner frame is movably connected inside the cover frame, an exhaust filter is provided on the back of the exhaust inner frame, a first limiting block is fixedly connected to the upper and lower ends of the fixed front frame, a second limiting block is fixedly connected to the upper and lower ends of the first side cover, a first mating pad is provided at one end of the first limiting block, and a second mating pad is provided at one end of the second limiting block.

[0013] Preferably, the upper mounting bracket and the lower mounting bracket are fixedly connected to the back of the upper and lower rotating seats, a first rotating shaft is provided between the upper and lower rotating seats, left and right rotating shafts are provided on both sides between the upper and lower rotating seats, and a second rotating shaft is provided on the side of the left and right rotating shafts.

[0014] Preferably, the surface of the fixed front frame is provided with a fitting pad, the four sides of the surface of the fixed front frame are provided with a first magnetic strip, and one end of the upper mounting frame, the lower mounting frame, the first side frame and the second side frame are all provided with a second magnetic strip.

[0015] Preferably, snap-fit ​​strips are fixedly connected to both ends between the first side cover and the second side cover, a first magnetic pad is provided at the center between the first side cover and the second side cover, snap-fit ​​grooves are provided on both sides of the upper mounting frame and the lower mounting frame, and a second magnetic pad is provided on the sides of the first side frame and the second side frame.

[0016] Preferably, the upper and lower edges of the mounting frame are provided with sealing rings, the inner wall of the mounting frame is provided with mounting rings, and the front side of the mounting frame is provided with a connecting grid.

[0017] Preferably, the upper and lower mounting brackets are provided with docking ventilation slots at their upper and lower ends, and a filter core plate is provided inside the docking ventilation slots.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This corrosion-resistant power circuit board is designed for optimal corrosion resistance during installation and use. In practical application, the exhaust inner frame and exhaust filter, fixed within the front frame via a cover frame, connect to the connecting grille at one end of the mounting frame. This facilitates ventilation and heat dissipation for the power circuit board inside the mounting frame, ensuring its stability during daily use and preventing corrosion from the external environment. The upper and lower mounting brackets at both ends of the mounting frame can be unfolded vertically to quickly disassemble and reassemble the power circuit board, allowing for cleaning and maintenance of any corroded surfaces. The mounting frame, secured by its surrounding structure, enables rapid corrosion-resistant installation and use, demonstrating the equipment's design and functionality.

[0020] This corrosion-resistant power circuit board features an upper air control frame that allows for sealing and adjustment of the internal air control frame via a torsion shaft and baffle at the internal air control slot. This prevents external corrosive moisture from entering when the equipment is not ventilated. The ventilation top and bottom frames utilize internal sealing rings and uniform airflow conical grooves to achieve closed ventilation at both ends of the upper and lower mounting frames. Additionally, the heating rod inside the front heating frame of the cooling fan can be activated for daily use, drying the cooling airflow at the ventilation grille. This provides efficient and corrosion-resistant drying for the power circuit board inside the mounting frame, demonstrating the comprehensiveness of the equipment design. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0022] Figure 2 This is an overall schematic diagram of the mounting frame structure of the present invention;

[0023] Figure 3 This is an overall schematic diagram of the wind turbine back frame structure of the present invention;

[0024] Figure 4 This is an overall schematic diagram of the installation frame structure of the present invention;

[0025] Figure 5 This is an overall schematic diagram of the fixed front frame structure of the present invention;

[0026] Figure 6 This is a schematic diagram showing the separation of the first and second side cover structures of the present invention;

[0027] Figure 7 This is a schematic diagram of the overall structure of the upper control frame of the present invention;

[0028] Figure 8 This is an overall schematic diagram of the cooling fan structure of the present invention;

[0029] Figure 9 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A;

[0030] Figure 10 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B.

[0031] In the diagram: 1. Upper mounting bracket; 2. Mounting frame; 3. Lower mounting bracket; 4. First side bracket; 5. Second side bracket; 6. First side cover; 7. Second side cover; 8. Fixed front bracket; 9. Cover frame; 10. Exhaust inner bracket; 11. Exhaust filter element; 12. Fan back bracket; 13. Cooling fan; 14. Heat insulation pad; 15. Upper air control bracket; 16. Lower air control bracket; 17. Ventilation top bracket; 18. Ventilation bottom bracket; 19. Sealing ring; 20. Air distribution cone groove; 21. Ventilation ring seat; 22. Ventilation ring grille; 23. Air control groove; 24. Torque shaft; 25. Air control baffle; 26. Heating bracket; 27. Heating rod; 28. Ventilation grille; 29. ​​Snap-fit ​​buckle; 30. Filter element inlet; 31. First limiting block; 32. Second limiting block; 33. First mating pad; 34. Second mating pad; 35. Upper and lower rotating seats; 36. First rotating shaft; 37. Left and right rotating shaft; 38. Second rotating shaft; 39. Fitting pad; 40. First magnetic strip; 41. Second magnetic strip; 42. Snap-fit ​​strip; 43. First magnetic pad; 44. Snap-fit ​​groove; 45. Second magnetic pad; 46. Sealing ring; 47. Installation ring; 48. Connecting grille; 49. Connecting ventilation groove; 50. Filter element plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-10 One embodiment provided by the present invention:

[0034] A corrosion-resistant power circuit board includes an upper mounting bracket 1, a mounting frame 2 at the bottom of the upper mounting bracket 1, a lower mounting bracket 3 at the bottom of the mounting frame 2, ventilation components on both sides of the upper mounting bracket 1, and a drying component on the back of the upper mounting bracket 1. A first side frame 4 is movably connected to one side of the upper mounting bracket 1, the mounting frame 2, and the lower mounting bracket 3, and a second side frame 5 is movably connected to the other side of the upper mounting bracket 1, the mounting frame 2, and the lower mounting bracket 3. A first side cover 6 is fitted onto the outer surface of the first side frame 4, and a second side cover 7 is fitted onto the outer surface of the second side frame 5. A fixed front frame 8 is movably connected to the front of the upper mounting bracket 1. The inner wall of the front frame 8 is provided with a cover frame 9, and an exhaust inner frame 10 is movably connected inside the cover frame 9. An exhaust filter element 11 is provided on the back of the exhaust inner frame 10. The upper and lower ends of the fixed front frame 8 are fixedly connected with first limiting blocks 31. The upper and lower ends of the first side cover 6 are fixedly connected with second limiting blocks 32. One end of the first limiting block 31 is provided with a first mating pad 33, and one end of the second limiting block 32 is provided with a second mating pad 34. The backs of the upper mounting frame 1 and the lower mounting frame 3 are fixedly connected with upper and lower rotating seats 35. A first rotating shaft 36 is provided between the upper and lower rotating seats 35. Left and right rotating parts are provided on both sides between the upper and lower rotating seats 35. A second rotating shaft 38 is provided on the side of shaft 37 for left and right rotation. A fitting pad 39 is provided on the surface of the fixed front frame 8. First magnetic strips 40 are provided on the four sides of the surface of the fixed front frame 8. A second magnetic strip 41 is provided at one end of the upper mounting frame 1, lower mounting frame 3, first side frame 4, and second side frame 5. A snap-fit ​​strip 42 is fixedly connected to both ends of the first side cover 6 and second side cover 7. A first magnetic pad 43 is provided at the center between the first side cover 6 and second side cover 7. Snap-fit ​​grooves 44 are provided on both sides of the upper mounting frame 1 and lower mounting frame 3. Second magnetic pads 45 are provided on the sides of the first side frame 4 and second side frame 5. The upper and lower edges of the frame 2 are provided with sealing rings 46, the inner wall of the mounting frame 2 is provided with mounting rings 47, the front of the mounting frame 2 is provided with a connecting grille 48, the upper and lower ends of the upper mounting frame 1 and the lower mounting frame 3 are provided with connecting ventilation slots 49, the inside of the connecting ventilation slots 49 is provided with filter core plates 50, the exhaust inner frame 10 and exhaust filter core 11, which are fixedly installed inside the fixed front frame 8 through the cover frame 9, can be connected to the connecting grille 48 at one end of the mounting frame 2 to perform ventilation and heat dissipation operation with the power circuit board inside the mounting frame 2, and ensure the installation stability of the power circuit board inside the mounting frame 2 during daily use.

[0035] The drying assembly includes a fan back frame 12. The fan back frame 12 is movably connected to the back of the upper mounting frame 1. A cooling fan 13 is installed on the back of the fan back frame 12. A heat insulation pad 14 is installed on the front of the fan back frame 12. An upper control frame 15 is fixedly connected to the top of the fan back frame 12. A lower control frame 16 is fixedly connected to the bottom of the fan back frame 12. A ventilation top frame 17 is fixedly connected to the front of the upper control frame 15. A ventilation bottom frame 18 is fixedly connected to the front of the lower control frame 16. A sealing ring 19 is provided at the edge between the ventilation top frame 17 and the ventilation bottom frame 18. A uniform airflow conical groove 20 is opened between the ventilation top frame 17 and the ventilation bottom frame 18. A ventilation ring seat 21 is provided at the center of the uniform airflow conical groove 20. A ventilation ring grille 22 is provided on the inner wall of the ventilation ring seat 21. An airflow control groove 23 is opened inside the upper control frame 15. Both ends of the upper control frame 15 are provided with... A torsion shaft 24 is provided, and an air control baffle 25 is movably connected to the inside of the air control slot 23 via the torsion shaft 24. A heating frame 26 is fixedly connected to the front of the cooling fan 13. An electric heating rod 27 is provided inside the heating frame 26. A ventilation grille 28 is provided on the front of the heating frame 26. Clips 29 are provided on both sides of the cooling fan 13. An inlet filter element 30 is movably connected inside the clips 29 to prevent external corrosive moisture from entering when the equipment is not ventilated. The ventilation top frame 17 and ventilation bottom frame 18 are sealed and ventilated at both ends of the upper and lower mounting frames 1 and 3 through the internal sealing ring 19 and the air distribution cone groove 20. The central ventilation ring seat 21 and ventilation ring grille 22 ensure efficient airflow. Finally, all the airflow flows efficiently up and down inside the mounting frame 2 and is quickly discharged from the fixed front frame 8.

[0036] Working principle: During use, the user first places the power circuit board to be installed into the mounting frame 2. The power circuit board can be attached to the mounting ring 47 on the inner wall of the mounting frame 2 for center mounting. Then, the entire mounting frame 2 is placed between the upper mounting bracket 1 and the lower mounting bracket 3, and positioned by the first side bracket 4 and the second side bracket 5 on both sides. At this time, the first side bracket 4 and the second side bracket 5 can be limited and secured by the first side cover 6 and the second side cover 7 on the outer surface. The fixing front bracket 8 on the front of the upper mounting bracket 1 is connected to the second magnetic strip 41 at one end of the upper mounting bracket 1, the lower mounting bracket 3, the first side bracket 4, and the second side bracket 5 via the first magnetic strip 40 on the four sides of the surface. The exhaust inner frame 10 and exhaust filter 11, which are fixed inside the front frame 8 via the cover frame 9, can be connected to the connecting grille 48 at one end of the mounting frame 2 for ventilation and heat dissipation of the power circuit board inside the mounting frame 2. This ensures the installation stability of the power circuit board inside the mounting frame 2 during daily use and avoids corrosion from the external environment. If corrosion occurs on one end of the power circuit board after prolonged use, the entire front frame 8 can be removed from one end of the upper mounting frame 1. The first side cover 6 and the second side cover 7 can also be quickly removed using the snap-fit ​​strip 42 and the first magnetic pad 43, directly exposing the first side frame 4 and the second side frame 5. Then, the first side frame 4... The second side frame 5 can be unfolded to both sides via the left and right rotating shafts 37 and 38. Then, via the upper and lower rotating seats 35, the upper mounting frame 1 and lower mounting frame 3 at both ends of the mounting frame 2 can be unfolded upwards and downwards, allowing for quick disassembly and assembly of the internal power circuit board of the mounting frame 2, and cleaning and maintenance of surface corrosion. Subsequently, the mounting frame 2, through its surrounding fixing structure, can be quickly installed and used for corrosion protection. During daily use, the fan back frame 12 can be connected and installed on the back of the upper mounting frame 1, mounting frame 2, and lower mounting frame 3. Then, the upper control frame 15 and lower control frame 16 at both ends of the fan back frame 12, along with the connecting... The top bracket 17 and the bottom bracket 18 can be fitted to the upper and lower ends of the upper mounting frame 1 and the first side cover 6, and continuously fix the first limiting block 31 and the second limiting block 32 at the upper and lower ends of the front frame 8 and the first side cover 6. The first mating pad 33 and the second mating pad 34 at one end can be used to fit and mate with one end and both sides of the top bracket 17 and the bottom bracket 18, ensuring the firmness of the fan back frame 12 installation. This ensures that the top bracket 17 and the bottom bracket 18 are firmly fitted to the mating ventilation slots 49 and filter core plates 50 at the upper and lower ends of the upper mounting frame 1 and the lower mounting frame 3. Then, the ventilation grille 28 inside the cooling fan 13 can be activated, so that it works in conjunction with the upper control air frame 15 at the upper and lower ends of the fan back frame 12.The ventilation system operates by uniformly ventilating and dissipating heat within the upper mounting frame 1, mounting frame 2, and lower mounting frame 3 along the ventilation top frame 17 and ventilation bottom frame 18. During this process, the upper air control frame 15 can adjust its internal sealing via the torque shaft 24 and air control baffle 25 at the internal air control groove 23, preventing external corrosive moisture from entering when the equipment is not ventilated. The ventilation top frame 17 and ventilation bottom frame 18 achieve closed ventilation at both ends of the upper and lower mounting frames 1 and 3 through the internal sealing ring 19 and uniform air conical groove 20. The central ventilation ring seat 21 and ventilation ring grille 22 ensure efficient airflow. Ultimately, all airflow flows efficiently up and down within the mounting frame 2 and is quickly discharged from the fixed front frame 8. Simultaneously, the heating rod 27 inside the front heating frame 26 of the cooling fan 13 can be activated as needed to dry the airflow at the ventilation grille 28, providing efficient and corrosion-resistant drying for the power circuit board inside the mounting frame 2. This is the complete working principle of the invention.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrosion-resistant power circuit board, comprising an upper mounting bracket (1), characterized in that: The upper mounting frame (1) is provided with a mounting frame (2) at its bottom, and a lower mounting frame (3) is provided at its bottom. Ventilation components are provided on both sides of the upper mounting frame (1), and a drying component is provided on the back of the upper mounting frame (1). The ventilation assembly includes a first side frame (4) and a second side frame (5). The first side frame (4) is movably connected to one side of the upper mounting frame (1), the mounting frame (2) and the lower mounting frame (3), and the second side frame (5) is movably connected to the other side of the upper mounting frame (1), the mounting frame (2) and the lower mounting frame (3). A first side cover (6) is fitted on the outer surface of the first side frame (4), and a second side cover (7) is fitted on the outer surface of the second side frame (5). The drying assembly includes a fan back frame (12), the fan back frame (12) is movably connected to the back of the upper mounting frame (1), a cooling fan (13) is provided on the back of the fan back frame (12), a heat insulation pad (14) is provided on the front of the fan back frame (12), an upper control frame (15) is fixedly connected to the top of the fan back frame (12), a lower control frame (16) is fixedly connected to the bottom of the fan back frame (12), a ventilation top frame (17) is fixedly connected to the front of the upper control frame (15), a ventilation bottom frame (18) is fixedly connected to the front of the lower control frame (16), a sealing ring (19) is provided on the edge between the ventilation top frame (17) and the ventilation bottom frame (18), and a uniform airflow conical groove (20) is opened between the ventilation top frame (17) and the ventilation bottom frame (18). The ventilation ring seat (21) is provided at the center of the uniform air conical groove (20). The ventilation ring seat (21) is provided with a ventilation ring grille (22) on the inner wall. The front of the upper mounting frame (1) is movably connected to a fixed front frame (8). The inner wall of the fixed front frame (8) is provided with a cover frame (9). The inside of the cover frame (9) is movably connected to an exhaust inner frame (10). The back of the exhaust inner frame (10) is provided with an exhaust filter element (11). The upper and lower ends of the fixed front frame (8) are fixedly connected to a first limiting block (31). The upper and lower ends of the first side cover (6) are fixedly connected to a second limiting block (32). One end of the first limiting block (31) is provided with a first docking pad (33). One end of the second limiting block (32) is provided with a second docking pad (34).

2. The corrosion-resistant power circuit board according to claim 1, characterized in that: The upper air control frame (15) has an air control groove (23) inside, and a torque shaft (24) is provided at both ends of the upper air control frame (15). An air control baffle (25) is movably connected inside the air control groove (23) through the torque shaft (24).

3. The corrosion-resistant power circuit board according to claim 1, characterized in that: A heating frame (26) is fixedly connected to the front of the cooling fan (13). An electric heating rod (27) is provided inside the heating frame (26). A ventilation grille (28) is provided on the front of the heating frame (26). Clips (29) are provided on both sides of the cooling fan (13). An inlet filter element (30) is movably connected inside the clips (29).

4. The corrosion-resistant power circuit board according to claim 1, characterized in that: The upper mounting bracket (1) and the lower mounting bracket (3) are fixedly connected to the back of the upper and lower rotating seats (35). A first rotating shaft (36) is provided between the upper and lower rotating seats (35). Left and right rotating shafts (37) are provided on both sides between the upper and lower rotating seats (35). A second rotating shaft (38) is provided on the side of the left and right rotating shafts (37).

5. A corrosion-resistant power circuit board according to claim 1, characterized in that: The surface of the fixed front frame (8) is provided with a fitting pad (39), and the four sides of the surface of the fixed front frame (8) are provided with a first magnetic strip (40). One end of the upper mounting frame (1), the lower mounting frame (3), the first side frame (4), and the second side frame (5) are all provided with a second magnetic strip (41).

6. The corrosion-resistant power circuit board according to claim 1, characterized in that: The first side cover (6) and the second side cover (7) are fixedly connected at both ends with snap strips (42), and a first magnetic pad (43) is provided at the center between the first side cover (6) and the second side cover (7). Snap grooves (44) are provided on both sides of the upper mounting frame (1) and the lower mounting frame (3), and a second magnetic pad (45) is provided on the side of the first side frame (4) and the second side frame (5).

7. A corrosion-resistant power circuit board according to claim 1, characterized in that: The upper and lower edges of the mounting frame (2) are provided with sealing rings (46), the inner wall of the mounting frame (2) is provided with mounting rings (47), and the front of the mounting frame (2) is provided with a connecting grid (48).

8. A corrosion-resistant power circuit board according to claim 1, characterized in that: The upper mounting bracket (1) and the lower mounting bracket (3) are provided with docking ventilation slots (49) at their upper and lower ends, and a filter core plate (50) is provided inside the docking ventilation slots (49).

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