External protection structure of safety circuit board

Abstract

The utility model discloses an external protection structure of a safety circuit board, and particularly relates to the technical field of circuit board protection, which comprises a panel, a sealing gasket arranged on one side of the panel, a display screen and a button embedded on one side of the panel, a button box arranged on one side of the panel close to the button, and a transmission button arranged in the middle of the button box and corresponding to the button. A through hole is formed in the bottom of the button box, and a protection box is arranged on the side, close to the button box, of the panel. According to the utility model, the first protection baffle plate and the second protection baffle plate are arranged to shield and protect electronic devices on the surface of the circuit board installed in the protection box, so as to prevent tools from colliding with the electronic devices or prevent the circuit board from being scratched by the movement of a connecting wire in the process of overhaul and maintenance, thereby playing a role in shielding and protection; and through the button box and the sealing gasket, the sealing strength when the sealing gasket and the button are connected with the panel can be improved, liquid is prevented from being attached to the circuit board, and the waterproof effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board protection technology, and more specifically, to an external protection structure for a safety circuit board. Background Technology

[0002] With the acceleration of modern urbanization, elevators, as key equipment in vertical transportation, are increasingly widely used and their operating frequency is constantly rising. The external circuit board of an elevator, as a core component of the elevator control system, undertakes critical tasks such as signal processing, command transmission, and power control. However, the elevator operating environment is extremely complex, facing multiple threats such as dust, moisture, electromagnetic interference, and physical impact.

[0003] Chinese patent application CN201821385717.2 discloses a waterproof structure for elevator external call, including a panel assembly and a protective box assembly. The panel assembly and the protective box assembly are snapped together. The panel assembly includes a panel, a back panel, a control circuit board, an up button, a down button, and a display screen. This invention effectively prevents moisture from entering the elevator external call system, thereby avoiding damage to the external call circuit due to water ingress, improving the safety and stability of the elevator external call system, and effectively ensuring the normal operation of the elevator.

[0004] However, as can be seen from the attached diagram in the instruction manual, the circuit board is directly exposed in the middle of the protective box. During the installation, maintenance, and repair of the elevator circuit board, the wires are easily scratched on the circuit board due to tool collisions or personnel pulling the connecting wires, which can damage the installation stability of the precision components on the circuit board and thus damage the circuit board. Therefore, a safe external protection structure for the circuit board is proposed. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an external protection structure for a safety circuit board to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external protection structure for a safety circuit board, including a panel. A sealing gasket is provided on one side of the panel, and a display screen and a button are embedded on one side of the panel. The sealing gasket can improve the sealing strength between the display screen and the button and the panel. A button box is provided on the side of the panel near the button. A transmission button corresponding to the button is provided in the middle of the button box. The button box supports and limits the transmission button, improving the stability of the transmission button. Liquid adhering to the transmission button can enter through the button for protection, avoiding direct contact with the circuit board, thus playing a protective role. A through hole is provided at the bottom of the button box, allowing the contents inside the button box to drain out. A protective box is provided on the side of the panel near the button box, and a cooling fan is provided in the middle of the protective box. The cooling fan exhausts the hot air generated by the circuit board inside the protective box, thus playing a heat dissipation role.

[0007] The protective box has symmetrical support plates fixedly connected to both sides of its inner cavity. A circuit board is provided on the side of the support plate away from the cooling fan. The protective box has symmetrical locking strips fixedly connected to both sides. A first protective baffle and a second protective baffle are respectively provided on both sides of the protective box. The opposite sides of the first and second protective baffles are provided with slots corresponding to the locking strips. The circuit board is supported by the support plates, and the electronic components on the surface of the circuit board can be covered and protected by the first and second protective baffles. The cooperation of the slots and locking strips improves the installation stability of the first and second protective baffles, facilitates the protection of electronic components on the surface of the circuit board, and improves the use effect.

[0008] The bottom of the protective box has a drain outlet, and a mesh plate is provided in the middle of the drain outlet. The liquid discharged from the bottom of the button box can be directly discharged through the drain outlet, and the mesh plate prevents dust from entering the interior of the protective box, thus playing a dustproof role.

[0009] Preferably, one side of the display screen mounting plate is located on one side of the sealing gasket. The sealing gasket is disposed between the button and the transmission button. One side of the transmission button has a wire that passes through the button box and connects to the pins on the circuit board. The sealing gasket improves the sealing effect of the display screen, the button, and the mounting panel, thus providing waterproof protection. The transmission button further enhances the protection by driving the button.

[0010] Preferably, a plurality of threaded posts are fixedly connected to one side of the panel, and first mounting ears are symmetrically provided on both sides of the button box. Four of the threaded posts pass through the two sides of the first mounting ears and are fitted with nuts. The threaded posts and the middle part of the first mounting ears facilitate fixing the button box to one side of the panel, thereby fixing the position of the transmission button.

[0011] Preferably, the protective box is symmetrically fixedly connected to two sides of the second mounting ear plates, wherein four threaded posts penetrate through the two sides of the second mounting ear plates and are fitted with nuts. The threaded posts penetrating through the second mounting ear plates facilitate the installation of the protective box on one side of the panel, making it convenient for combination use.

[0012] Preferably, a stud is fixedly connected to one side of the support plate. The stud penetrates the circuit board and is fitted with a fastening nut. The stud penetrating the circuit board facilitates the installation of the circuit board in the middle of the protective box, making it convenient for fixed use.

[0013] Preferably, the cross-sectional shape of both the second protective baffle and the first protective baffle is set to "L" shape. The second protective baffle corresponds to the button box, and the first protective baffle corresponds to the display screen. The surface of the first protective baffle is provided with wire connection holes. The electronic components on the surface of the circuit board can be protected by the first and second protective baffles to prevent the stability of the electronic components from being affected by the movement of the connecting wires during assembly, thus playing a protective role.

[0014] Preferably, the cross-sectional shape of the card strip is trapezoidal, the card strip is located in the middle of the card slot, and one side wall of the second protective baffle is attached to the wall of the button box. The card strip can be used to easily install and fix the first and second protective baffles, making it convenient for installation and combination.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This utility model firstly protects the electronic components on the surface of the circuit board installed inside the protective box by setting a first protective baffle and a second protective baffle, so as to prevent tools from colliding with electronic components or connecting wires from moving and scratching the circuit board during inspection and maintenance. It also improves the sealing strength when the button box and sealing gasket are connected to the panel by the sealing gasket and the button, and prevents liquid from adhering to the circuit board, thus playing a waterproof role.

[0017] This utility model also allows liquids that accidentally enter the button box to be discharged directly through the combination of through holes and drain outlets, preventing them from contacting the circuit board and achieving a waterproof effect. The mesh plate prevents external dust from entering the protective box, and the cooling fan cools the heat generated by the circuit board, thus achieving a heat dissipation effect. The threaded posts facilitate the installation and fixation of the button box and the protective box.

[0018] In summary, through the interaction of the above-mentioned multiple functions, the electronic components on the circuit board surface can be shielded and protected, preventing tools from colliding with electronic components or connecting wires from moving and scratching the circuit board during inspection and maintenance, thus playing a protective role. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the panel of this utility model.

[0022] Figure 4 This is a schematic diagram showing the disassembled structure of the protective box of this utility model.

[0023] The attached diagram is labeled as follows: 1. Panel; 2. Sealing gasket; 3. Display screen; 4. Button; 5. Transmission button; 6. Button box; 7. First mounting ear plate; 8. Protective box; 9. Support plate; 10. Circuit board; 11. Cooling fan; 12. Locking strip; 13. First protective baffle; 14. Second protective baffle; 15. Slot; 16. Drain outlet; 17. Through hole; 18. Mesh plate; 19. Threaded post; 20. Second mounting ear plate; 21. Nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As attached Figure 1-4 The safety circuit board external protection structure shown includes a panel 1, a sealing gasket 2 on one side of the panel 1, a display screen 3 and a button 4 embedded on one side of the panel 1. The sealing gasket 2 can improve the sealing strength between the display screen 3 and the button 4 and the panel 1. A button box 6 is provided on the side of the panel 1 near the button 4. A transmission button 5 corresponding to the button 4 is provided in the middle of the button box 6. The button box 6 supports and limits the transmission button 5, improving the stability of the transmission button 5. Liquid adhering to the transmission button 5 can enter through the button 4 for protection, avoiding direct contact with the circuit board 10, thus playing a protective role. A through hole 17 is opened at the bottom of the button box 6, through which the contents of the button box 6 can be discharged. A protective box 8 is provided on the side of the panel 1 near the button box 6. A cooling fan 11 is provided in the middle of the protective box 8, through which the hot air generated by the circuit board 10 inside the protective box 8 is discharged, thus playing a heat dissipation role.

[0026] Support plates 9 are symmetrically fixedly connected to both sides of the inner cavity of the protective box 8. A circuit board 10 is set on the side of the support plate 9 away from the heat dissipation fan 11. Clips 12 are symmetrically fixedly connected to both sides of the protective box 8. A first protective baffle 13 and a second protective baffle 14 are respectively set on both sides of the protective box 8. The opposite sides of the first protective baffle 13 and the second protective baffle 14 are provided with slots 15 corresponding to the clips 12. A drain outlet 16 is provided at the bottom of the protective box 8. A mesh plate 18 is set in the middle of the drain outlet 16. The circuit board 10 is supported by the support plates 9. The electronic components on the surface of the circuit board 10 can be covered and protected by the first protective baffle 13 and the second protective baffle 14. The cooperation of the slots 15 and the clips 12 improves the installation stability of the first protective baffle 13 and the second protective baffle 14, facilitates the protection of the electronic components on the surface of the circuit board 10, and improves the use effect. Liquid discharged from the bottom of the button box 6 can be directly discharged through the drain outlet 16, and dust is prevented from entering the interior of the protective box 8 by the mesh plate 18, which plays a role in dust prevention.

[0027] As attached Figure 1-4As shown, one side of the display screen 3 is mounted on one side of the sealing gasket 2. The sealing gasket 2 is positioned between the button 4 and the transmission button 5. One side of the transmission button 5 has a wire passing through the button box 6 and connected to the pins on the circuit board 10. Multiple threaded posts 19 are fixedly connected to one side of the panel 1. First mounting ears 7 are symmetrically provided on both sides of the button box 6, with four threaded posts 19 passing through both sides of the two first mounting ears 7 and fitted with nuts 21. Second mounting ears 20 are symmetrically fixedly connected to both sides of the protective box 8, with four threaded posts 19 passing through both sides of the two second mounting ears 20 and fitted with nuts 21. A stud is fixedly connected to one side of the support plate 9, with the stud passing through the circuit board 10 and fitted with a fastening nut. The cross-sectional shape of the second protective baffle 14 and the first protective baffle 13 is both set to an "L" shape. The second protective baffle 14 corresponds to the button box 6, and the first protective baffle 13 corresponds to the display screen 3. Wire connection holes are provided on the surface of the first protective baffle 13. The cross-sectional shape of the clip 12 is trapezoidal, and the clip 12 is positioned in the slot 15. In the middle, one side wall of the second protective baffle 14 fits against the wall of the button box 6. The sealing gasket 2 improves the sealing effect of the display screen 3, button 4, and the panel 1, providing waterproof protection. The button is driven by the transmission button 5, further enhancing the protection. The threaded post 19 and the middle of the first mounting ear plate 7 facilitate the fixing of the button box 6 to one side of the panel 1, thus fixing the position of the transmission button 5. The threaded post 19 and the second mounting ear plate 20 facilitate the installation of the protective box 8 on one side of the panel 1, making it easy to combine and use. The threaded post and the circuit board 10 are easily installed in the middle of the protective box 8, making it easy to fix and use. The first protective baffle 13 and the second protective baffle 14 can protect the electronic components on the surface of the circuit board 10, preventing the movement of the connecting wires from affecting the stability of the electronic components during assembly, thus providing protection. The retaining strip 12 facilitates the installation and fixing of the first protective baffle 13 and the second protective baffle 14, making it easy to install and combine and use.

[0028] The working principle of this utility model is as follows: In use, the sealing gasket 2 improves the sealing strength between the button 4 and the display screen 3 and the panel 1, and the button box 6 drives the transmission button 5 to be fixed on one side of the button 4 through the threaded post 19. The circuit board 10 is fixed on the support plate 9 through the stud. Then, through the cooperation of the clip 12 and the slot 15, the first protective baffle 13 and the second protective baffle 14 are installed on one side of the circuit board 10. Thus, the walls of the first protective baffle 13 and the second protective baffle 14 shield and protect the electronic components on the surface of the circuit board 10, so as to avoid the stability of the installation of electronic components by the movement of the connecting wires during installation.

[0029] Then connect the wires on the circuit board 10 to the wires on the display screen 3 and the transmission button 5, and install the protective box 8 on one side of the panel 1 by passing through the second mounting ear plate 20 through the threaded post 19. The assembly is then complete.

[0030] The through-hole 17 allows liquid entering the button box 6 through the button 4 to drip directly onto the corresponding drain 16 and be discharged through the drain 16, preventing the liquid from adhering to the circuit board 10, thus providing waterproofing and improving the protection effect.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective structure for the outside of a safety circuit board, comprising a faceplate (1), characterized in that: One side of the panel (1) is provided with a sealing gasket (2), one side of the panel (1) is embedded with a display screen (3) and a button (4), one side of the panel (1) close to the button (4) is provided with a button box (6), the middle of the button box (6) is provided with a transmission button (5) corresponding to the button (4), the bottom of the button box (6) is provided with a through hole (17), one side of the panel (1) close to the button box (6) is provided with a protection box (8), the middle of the protection box (8) is provided with a cooling fan (11). The inner cavity of the protection box (8) is fixedly connected with support plates (9) on both sides, the side of the support plate (9) away from the cooling fan (11) is provided with a circuit board (10), the two sides of the protection box (8) are fixedly connected with clamping strips (12), the two sides of the protection box (8) are provided with first protection baffle (13) and second protection baffle (14) respectively, the side away from each other of the first protection baffle (13) and the second protection baffle (14) is provided with a clamping groove (15) corresponding to the clamping strip (12). The bottom of the protection box (8) is provided with a drain port (16), the middle of the drain port (16) is provided with a mesh plate (18).

2. The protective structure for a safety circuit board outside according to claim 1, characterized in that: The side of the display screen (3) mounting plate is located on one side of the sealing gasket (2), the sealing gasket (2) is arranged between the button (4) and the transmission button (5), the side of the transmission button (5) is connected with the pin on the circuit board (10) through the wire penetrating the button box (6).

3. The protective structure for a safety circuit board outside according to claim 1, characterized in that: The panel (1) is fixedly connected with a plurality of threaded columns (19) on one side, the two sides of the button box (6) are symmetrically provided with first mounting ear plates (7), and the four threaded columns (19) penetrate the two sides of the two first mounting ear plates (7) and are sleeved with nuts (21).

4. The protective structure for a safety circuit board outside according to claim 3, characterized in that: The two sides of the protection box (8) are fixedly connected with second mounting ear plates (20), and the four threaded columns (19) penetrate the two sides of the two second mounting ear plates (20) and are sleeved with nuts (21).

5. The protective structure for a safety circuit board outside according to claim 1, characterized in that: The side of the support plate (9) is fixedly connected with a threaded column, the threaded column penetrates the circuit board (10) and is sleeved with a fastening nut.

6. The protective structure for a safety circuit board outside according to claim 1, characterized in that: The cross section shape of the second protection baffle (14) and the first protection baffle (13) is "L" shape, the second protection baffle (14) corresponds to the button box (6), the first protection baffle (13) corresponds to the display screen (3), and the surface of the first protection baffle (13) is provided with a wire connecting hole.

7. The protective structure for a safety circuit board outside according to claim 1, characterized in that: The cross section shape of the clamping strip (12) is trapezoidal, the clamping strip (12) is arranged in the middle of the clamping groove (15), and the side wall of the second protection baffle (14) is attached to the wall of the button box (6).

Images