PCB with moisture-proof and dust-proof functions

By designing a combined structure of mounting frame, filter, desiccant board and positioning components on the PCB circuit board, the problem of easy damage to existing PCB circuit boards in humid environments is solved, and the moisture-proof and dust-proof effect is achieved, extending the service life and improving practicality.

CN222582781UActive Publication Date: 2025-03-07CHANGZHOU SHOUXIN INTELLIGENT MFG CO LTD
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Patent Information

Application Number
CN202421207289.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-03-07
Estimated Expiration
2034-05-30

AI Technical Summary

Technical Problem

Existing PCB circuit boards usually do not have moisture-proof and dust-proof functions. They are in a humid environment for a long time and may easily cause moisture to penetrate into the circuit board, causing damage, reducing service life and practicality.

Method used

A PCB circuit board with moisture-proof and dust-proof function is designed, and a combined structure of mounting frame, filter mesh, desiccant board and positioning components is adopted. A filter is provided at the bottom of the mounting frame to prevent dust, and a desiccant plate is provided inside to prevent moisture, and the loading and unloading of the desiccant plate is facilitated by positioning components.

Benefits of technology

The filter is set to prevent external foreign objects from entering, and the desiccant board keeps the circuit board dry, extends the service life and improves practicality. The convenient desiccant plate loading and unloading design further improves the operational ease.

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Abstract

The utility model relates to the technical field of PCBs (Printed Circuit Boards), in particular to a PCB with moisture-proof and dust-proof functions, and solves the problems that the existing PCB in the prior art generally does not have the moisture-proof and dust-proof functions, so that if the PCB is in a humid environment for a long time, moisture is easy to permeate into the circuit board to damage the circuit board, and the service life of the PCB is prolonged. The service life of the circuit board is shortened, and the practicability of the circuit board is reduced. The PCB with the moisture-proof and dust-proof functions comprises a circuit board body, a mounting frame is arranged at the bottom of the circuit board body, a filter screen is arranged at the bottom of the mounting frame, the top of the filter screen is fixedly connected with the surface of the bottom of the mounting frame, a drying agent plate is arranged in the mounting frame, and a positioning assembly connected with the drying agent plate is arranged on one side of the mounting frame. According to the utility model, the circuit board is effectively kept in a dry state and has a dustproof effect, the service life of the PCB is prolonged, and the practicability of the PCB is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit boards, and in particular to a PCB circuit board with moisture-proof and dust-proof functions. Background Art

[0002] PCB is an important electronic component and a support for electronic components. It is called a "printed" circuit board because it is made using electronic printing technology. The main function of PCB is to provide electrical connections between electronic components. In electronic devices, PCB is an indispensable component. As long as there are electronic components such as integrated circuits, PCB must be used for electrical interconnection between them.

[0003] At present, most of the existing PCB circuit boards have a relatively simple structure and usually do not have moisture-proof and dust-proof functions. When the circuit board is used in a relatively humid environment, small water droplets are easily condensed at the bottom of the circuit board, which can easily cause damage to the electronic components inside the circuit board over a long period of time. At the same time, moisture can easily penetrate into the circuit board and damage it, resulting in a reduction in the service life of the circuit board and a reduction in the practicality of the circuit board. Therefore, we propose a PCB circuit board with moisture-proof and dust-proof functions to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a PCB circuit board with moisture-proof and dust-proof functions, which solves the problem that the existing PCB circuit boards in the prior art usually do not have moisture-proof and dust-proof functions, and if they are in a humid environment for a long time, moisture is likely to penetrate into the inside of the circuit board and damage it, resulting in a reduction in the service life of the circuit board and a reduction in the practicality of the circuit board.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A PCB circuit board with moisture-proof and dust-proof functions comprises a circuit board body, a mounting frame is arranged at the bottom of the circuit board body, a filter screen is arranged at the bottom of the mounting frame, and the top of the filter screen is fixedly connected to the bottom surface of the mounting frame, a desiccant plate is arranged inside the mounting frame, a positioning assembly connected to the desiccant plate is arranged on one side of the mounting frame, card plates are arranged on both sides of the desiccant plate, and card grooves adapted to the side walls of the desiccant plate are provided on the sides of the two card plates close to each other, and the sides of the two card plates away from each other are fixedly connected to the adjacent inner side walls of the mounting frame, a connecting groove is arranged on the other side of the mounting frame, and a fixing plate adapted to the connecting groove is fixedly connected to one side of the desiccant plate.

[0007] Preferably, a plug hole is provided on one side of one of the card boards and is located in the card slot, and a slot connected to the slot is provided on one side of the desiccant plate.

[0008] Preferably, the positioning assembly includes a mounting shell arranged on one side of the mounting frame, and one side of the mounting shell is open, and the surface of the mounting shell on one side and located at the opening is fixedly connected to the outer side wall adjacent to the mounting frame, a limit plate is provided inside the mounting shell, a pull rod is sleeved inside the limit plate, one end of the pull rod passes through the side wall of the mounting frame and is plugged into the slot through the socket, and the other end of the pull rod passes through the side wall of the mounting shell and is fixedly installed with a pull block.

[0009] Preferably, the positioning assembly further includes a spring arranged in the mounting shell, the interior of the spring is sleeved with the exterior of the pull rod, and the two ends of the spring are respectively fixedly connected to one side of the limiting plate and the inner wall of one side of the mounting shell.

[0010] Preferably, a circular groove is provided on the side of the pulling block close to the mounting shell, a limiting groove is provided on the outer wall of the side of the mounting shell close to the pulling block, a limiting block matching the limiting groove is provided on one side of the mounting shell, and an insertion rod matching the circular groove is fixedly connected to one side of the limiting block.

[0011] Preferably, a handle is fixedly mounted on the middle portion of one side of the fixing plate away from the desiccant plate.

[0012] The utility model has at least the following beneficial effects:

[0013] Hold the pull block and pull the pull rod to move one end out of the slot to release the positioning of the desiccant plate, making it convenient to pull out the desiccant plate for replacement and maintenance. During installation, align the two sides of the desiccant plate with the two slots and slide them in. Release the pull block to allow the spring to elastically return to push the limit plate to drive the pull rod back, so that one end of the desiccant plate is inserted into the slot to position the desiccant plate, thereby achieving the effect of convenient loading and unloading of the desiccant plate and keeping the circuit board dry at all times. At the same time, the setting of the filter box can prevent foreign matter from entering the inside of the circuit board body to ensure the dustproof effect and improve the service life and practicality of the PCB circuit board.

[0014] The utility model also has the following beneficial effects:

[0015] When the pull block is pulled to move, the limit block in the limit groove is moved to drive the insertion rod to move to the circular groove. By loosening the pull block, the circular groove will abut against one end of the insertion rod, thereby positioning the pull block so that the pull rod will not move to position the desiccant plate, making it convenient for personnel to free their hands to pull out the desiccant plate, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the fixing plate of the utility model;

[0019] Figure 3 This is a structural schematic diagram of the utility model card board;

[0020] Figure 4 It is a cutaway view of the installation shell of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the plug rod of the utility model.

[0022] In the figure: 1. Circuit board body; 2. Mounting frame; 3. Desiccant plate; 4. Handle; 5. Card plate; 6. Mounting shell; 7. Filter; 8. Pull rod; 9. Limit plate; 10. Spring; 11. Pull block; 12. Insert rod; 13. Limit block; 14. Fixing plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Reference Figure 1-5 , a PCB circuit board with moisture-proof and dust-proof functions, comprising a circuit board body 1, a mounting frame 2 is arranged at the bottom of the circuit board body 1, a filter screen 7 is arranged at the bottom of the mounting frame 2, and the top of the filter screen 7 is fixedly connected to the bottom surface of the mounting frame 2, a desiccant plate 3 is arranged inside the mounting frame 2, a positioning component connected to the desiccant plate 3 is arranged on one side of the mounting frame 2, a card plate 5 is arranged on both sides of the desiccant plate 3, and a card slot adapted to the side wall of the desiccant plate 3 is opened on the side where the two card plates 5 are close to each other, and a card slot adapted to the side wall of the desiccant plate 3 is opened on the side where the two card plates 5 are far away from each other is fixedly connected to the adjacent inner side wall of the mounting frame 2, a connecting groove is opened on the other side of the mounting frame 2, and a fixing plate 14 adapted to the connecting groove is fixedly connected to one side of the desiccant plate 3. Specifically, personnel can conveniently pull out the desiccant plate 3 for replacement and maintenance by operating the positioning component, so as to achieve the effect of convenient loading and unloading the desiccant plate 3, so that the circuit board can be kept dry at all times, and at the same time, the setting of the filter box 7 can prevent foreign matter from entering the inside of the circuit board body 1 to ensure the dustproof effect, thereby improving the service life and practicality of the PCB circuit board.

[0025] Furthermore, a socket is provided on one side of one of the card boards 5 and is located in the card slot, and a slot connected to the slot is provided on one side of the desiccant plate 3. Specifically, through the setting of the socket and the slot, the socket and the slot facilitate the plugging of one end of the pull rod 8 into the socket and the slot, thereby firmly positioning the desiccant plate 3, the card board 5 and the mounting frame 2, and facilitating the loading and unloading of the desiccant plate 3, so that the circuit board can be kept dry at all times.

[0026] Furthermore, the positioning component includes a mounting shell 6 arranged on one side of the mounting frame 2, and one side of the mounting shell 6 is open, and one side of the mounting shell 6 and the surface located at the opening are fixedly connected to the outer side wall adjacent to the mounting frame 2, and a limit plate 9 is provided inside the mounting shell 6, and a pull rod 8 is sleeved inside the limit plate 9, one end of the pull rod 8 passes through the side wall of the mounting frame 2 and is plugged into the slot through the socket, and the other end of the pull rod 8 passes through the side wall of the mounting shell 6 and is fixedly installed with a pull block 11. Specifically, through the setting of the pull block 11, the pull block 11 is convenient for personnel to hold and pull the pull rod 8 to move and load and unload the desiccant plate 3.

[0027] Furthermore, the positioning component also includes a spring 10 arranged in the mounting shell 6, the interior of the spring 10 is nested with the exterior of the pull rod 8, and the two ends of the spring 10 are respectively fixedly connected to one side of the limit plate 9 and the inner wall of one side of the mounting shell 6. Specifically, through the setting of the spring 10, a person holds the pull block 11 and pulls the pull rod 8 to move to one end. At this time, the movement of the pull rod 8 drives the limit plate 9 to move and causes the limit plate 9 to squeeze the spring 10, and one end of the pull rod 8 is then removed from the slot on one side of the desiccant plate 3 to release the positioning of the desiccant plate 3, so that the person can easily pull out the desiccant plate 3 for replacement and maintenance. During installation, the two sides of the desiccant plate 3 are aligned with the two card slots and slid in to make the fixing plate 14 fit the connecting slot, and then the pull block 11 is released to make the spring 10 lose its extrusion force and elastically restore to push the limit plate 9 to drive the pull rod 8 back to its position, so that one end of the pull rod 8 is inserted into the slot to position the desiccant plate 3, thereby achieving the effect of convenient loading and unloading of the desiccant plate 3, so that the circuit board is always kept dry, and the service life and practicality of the PCB circuit board are improved.

[0028] Furthermore, a circular groove is provided on one side of the pulling block 11 close to the mounting shell 6, a limiting groove is provided on the outer wall of the mounting shell 6 close to the pulling block 11, a limiting block 13 matched with the limiting groove is provided on one side of the mounting shell 6, and a plug rod 12 matched with the circular groove is fixedly connected to one side of the limiting block 13. Specifically, through the setting of the plug rod 12, when a person pulls the pulling block 11 to move, the person can move the limiting block 13 in the limiting groove and drive the plug rod 12 to move to the circular groove. At this time, by loosening the pulling block 11, when the pulling block 11 moves, the circular groove will abut against one end of the plug rod 12, thereby positioning the pulling block 11, so that the pulling rod 8 will not move to position the desiccant plate 3, which is convenient for the person to free up his hands to pull out the desiccant plate 3, thereby improving the convenience of operation.

[0029] Furthermore, a handle 4 is fixedly installed in the middle of one side of the fixing plate 14 away from the desiccant plate 3. Specifically, through the setting of the handle 4, the handle 4 can facilitate personnel to easily hold and pull the fixing plate 14 and drive the desiccant plate 3 to be pulled out, which is convenient for subsequent replacement and maintenance.

[0030] In summary:

[0031] By holding the pull block 11 and pulling the pull rod 8 to move to one end, the movement of the pull rod 8 drives the limit plate 9 to move and causes the limit plate 9 to squeeze the spring 10, and one end of the pull rod 8 is then moved out of the slot on one side of the desiccant plate 3 to release the positioning of the desiccant plate 3, so that personnel can pull out the desiccant plate 3 for replacement and maintenance. During installation, the two sides of the desiccant plate 3 are aligned with the two card slots and slid in to make the fixing plate 14 fit the connecting slot, and then the pull block 11 is released to make the spring 10 lose its extrusion force and elastically restore to push the limit plate 9 to drive the pull rod 8 back to its position, so that one end of the pull rod 8 is inserted into the slot to position the desiccant plate 3, thereby achieving the effect of convenient loading and unloading of the desiccant plate 3, so that the circuit board can be kept dry at all times, and the service life and practicality of the PCB circuit board are improved.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A PCB circuit board with moisture and dust proof functions, comprising a circuit board body (1), characterized in that: A mounting frame (2) is provided at the bottom of the circuit board body (1), a filter screen (7) is provided at the bottom of the mounting frame (2), and the top of the filter screen (7) is fixedly connected to the bottom surface of the mounting frame (2), a desiccant plate (3) is provided inside the mounting frame (2), a positioning assembly connected to the desiccant plate (3) is provided on one side of the mounting frame (2), a clamping plate (5) is provided on both sides of the desiccant plate (3), and a clamping groove matching the side wall of the desiccant plate (3) is provided on the sides of the two clamping plates (5) close to each other, and a clamping groove matching the side wall of the desiccant plate (3) is provided on the sides of the two clamping plates (5) away from each other, and an adjacent inner wall of the mounting frame (2) is fixedly connected, and a connecting groove is provided on the other side of the mounting frame (2), and a fixing plate (14) matching the connecting groove is fixedly connected to one side of the desiccant plate (3).

2. The PCB circuit board with moisture-proof and dust-proof functions according to claim 1, characterized in that: One side of one of the card plates (5) is provided with an insertion hole located in the card slot, and one side of the desiccant plate (3) is provided with a slot connected to the slot.

3. The PCB circuit board with moisture-proof and dust-proof functions according to claim 1, characterized in that: The positioning component comprises a mounting shell (6) arranged on one side of the mounting frame (2), and one side of the mounting shell (6) is in an open shape, and one side of the mounting shell (6) and the surface located at the opening are fixedly connected to the outer side wall adjacent to the mounting frame (2), and a limiting plate (9) is provided inside the mounting shell (6), and a pull rod (8) is sleeved inside the limiting plate (9), one end of the pull rod (8) passes through the side wall of the mounting frame (2) and is plugged into the slot through the plug hole, and the other end of the pull rod (8) passes through the side wall of the mounting shell (6) and is fixedly installed with a pull block (11).

4. The PCB circuit board with moisture-proof and dust-proof functions according to claim 1, characterized in that: The positioning assembly also includes a spring (10) arranged in the mounting shell (6), the interior of the spring (10) being nested with the exterior of the pull rod (8), and the two ends of the spring (10) being fixedly connected to one side of the limit plate (9) and the inner wall of one side of the mounting shell (6), respectively.

5. The PCB circuit board with moisture-proof and dust-proof functions according to claim 3, characterized in that: A circular groove is provided on one side of the pulling block (11) close to the mounting shell (6); a limiting groove is provided on the outer wall of one side of the mounting shell (6) close to the pulling block (11); a limiting block (13) matched with the limiting groove is provided on one side of the mounting shell (6); and an insertion rod (12) matched with the circular groove is fixedly connected to one side of the limiting block (13).

6. The PCB circuit board with moisture-proof and dust-proof functions according to claim 1, characterized in that: A handle (4) is fixedly mounted on the middle portion of one side of the fixing plate (14) away from the desiccant plate (3).