Waterproof sealing structure for PCB circuit board

Abstract

The utility model belongs to the technical field of circuit boards, in particular to a waterproof sealing structure for a PCB (printed circuit board), which comprises a waterproof shell, a groove is arranged above one side of the waterproof shell, a pressure spring is arranged in the groove, and a limit block is arranged at one end of the pressure spring. According to the utility model, the clamping block is pressed to enable the limiting block to extrude the pressure spring, so that the clamping block is driven to leave the clamping groove and retract into the groove, and then the cover plate is pulled to move upwards to open the waterproof shell, so that a maintainer can directly take out the circuit board main body for maintenance; the operation of taking out the circuit board from the interior of the waterproof shell is relatively convenient, the interior of the waterproof shell is always in a dry state through a drying agent, then the waterproof shell is sealed through clamping of a cover plate and the waterproof shell, the waterproof sealing performance of the device is further improved, and meanwhile the waterproof sealing performance of the device is improved through embedding of a rubber sealing plate and a rubber sealing frame. And the waterproof sealing performance of the device is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a waterproof sealing structure for a PCB circuit board. Background Art

[0002] The Chinese name of PCB is printed circuit board, also known as printed circuit board. Before the emergence of printed circuit boards, the interconnection between electronic components was directly connected by wires to form a complete circuit. In modern times, circuit panels only exist as effective experimental tools, and printed circuit boards have become an important position in the electronics industry. In the past decade, my country's printed circuit board manufacturing industry has developed rapidly. At present, in order to better achieve the waterproof sealing of circuit boards, circuit boards are usually placed inside waterproof shells for waterproof sealing.

[0003] The prior art has the following problems:

[0004] 1. The existing waterproof sealing structure for PCB circuit boards generally achieves waterproof sealing by placing the circuit board inside a waterproof shell. However, this also makes it cumbersome, time-consuming and labor-intensive for maintenance personnel to take the circuit board out of the waterproof shell during maintenance, which indirectly reduces the maintenance work efficiency and cannot meet the use requirements;

[0005] 2. The existing waterproof sealing structure for PCB circuit boards has a relatively general sealing effect, which results in that when in use, water vapor may enter the waterproof shell along the gap between the waterproof shell and the cover plate, affecting the circuit board, indirectly reducing the service life of the circuit board, and having poor practicality. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a waterproof sealing structure for a PCB circuit board, which solves the current problems of complicated operation of removing the circuit board from the inside of the waterproof shell during maintenance and the general sealing effect.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof sealing structure for a PCB circuit board, comprising a waterproof shell, a groove is provided on the upper side of one side of the waterproof shell, a compression spring is arranged inside the groove, a limiting block is arranged at one end of the compression spring, a clamping block is arranged on one side of the limiting block, a cover plate is arranged on the outer surface of the clamping block, a clamping groove is provided on one side of the cover plate, a rubber sealing plate is arranged on the top of the cover plate, a rubber sealing frame is arranged on the inner wall of the waterproof shell, a desiccant is arranged at the bottom end of the waterproof shell, a perforated plate is arranged on the top of the desiccant, a circuit board body is arranged on the top of the perforated plate, and a wiring hole is arranged at the lower front of the waterproof shell.

[0008] As a preferred technical solution of the utility model, there are two groups of compression springs, and the two groups of compression springs are arranged corresponding to each other in the middle part of the waterproof shell.

[0009] As a preferred technical solution of the utility model, the size of the limit block is matched with the size of the groove.

[0010] As a preferred technical solution of the utility model, the size of the cover plate is matched with the size of the waterproof shell.

[0011] As a preferred technical solution of the present utility model, the position of the card slot and the position of the groove are arranged corresponding to each other.

[0012] As a preferred technical solution of the utility model, the size of the rubber sealing plate is matched with the size of the rubber sealing frame.

[0013] As a preferred technical solution of the utility model, moisture absorption holes are provided on the orifice plate, and the moisture absorption holes are provided in several groups and are arranged in equidistant straight lines.

[0014] Compared with the prior art, the utility model provides a waterproof sealing structure for a PCB circuit board, which has the following beneficial effects:

[0015] 1. This waterproof sealing structure for a PCB circuit board, when repairing, by pressing the card block, the limit block squeezes the compression spring, thereby driving the card block to leave the card slot and retract into the groove, and then the waterproof shell is opened by pulling the cover plate upward, so that the maintenance personnel can directly take out the circuit board body for maintenance. This design makes it more convenient for the maintenance personnel to take out the circuit board from the waterproof shell during maintenance, indirectly improving the maintenance work efficiency and meeting the use requirements.

[0016] 2. This waterproof sealing structure for a PCB circuit board uses a desiccant to keep the interior of the waterproof shell in a dry state at all times, and then the cover plate is engaged with the waterproof shell to seal the waterproof shell, thereby improving the waterproof sealing performance of the device. At the same time, the rubber sealing plate is engaged with the rubber sealing frame to further enhance the waterproof sealing performance of the device, thereby preventing water vapor from entering the interior of the waterproof shell along the gap between the waterproof shell and the cover plate during use, thereby affecting the circuit board, indirectly increasing the service life of the circuit board, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the utility model at A;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model at B;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model.

[0021] In the figure: 1. waterproof shell; 2. groove; 3. compression spring; 4. limit block; 5. clamping block; 6. cover plate; 7. clamping slot; 8. rubber sealing plate; 9. rubber sealing frame; 10. desiccant; 11. perforated plate; 12. circuit board body; 13. wiring hole. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 In the present embodiment: a waterproof sealing structure for a PCB circuit board comprises a waterproof shell 1, a groove 2 is provided on the upper side of the waterproof shell 1, a compression spring 3 is arranged inside the groove 2, a limiting block 4 is arranged at one end of the compression spring 3, a clamping block 5 is arranged on one side of the limiting block 4, a cover plate 6 is provided on the outer surface of the clamping block 5, a clamping groove 7 is provided on one side of the cover plate 6, a rubber sealing plate 8 is arranged on the top of the inner top of the cover plate 6, so that the rubber sealing plate 8 can be installed and fixed through the cover plate 6 to improve the stability of the rubber sealing plate 8, a rubber sealing frame 9 is arranged on the inner wall of the waterproof shell 1, so that the rubber sealing frame 9 can be installed and fixed through the waterproof shell 1 to improve the stability of the rubber sealing frame 9, a desiccant 10 is arranged at the bottom end of the waterproof shell 1, a perforated plate 11 is arranged on the top of the desiccant 10, a circuit board body 12 is arranged on the top of the perforated plate 11, and a wiring hole 13 is arranged at the lower front of the waterproof shell 1 to facilitate the connection of the circuit board body 12 with external circuits through the wiring hole 13.

[0024] In this embodiment, there are two groups of compression springs 3, and the two groups of compression springs 3 are arranged corresponding to each other in the middle part of the waterproof shell 1, so that the stability of the connection between the clamping block 5 and the clamping slot 7 can be improved through the elastic force of the compression spring 3; the size of the limiting block 4 is adapted to the size of the groove 2, so that the clamping block 5 can be limited by the limiting block 4 to prevent the clamping block 5 from escaping from the inside of the groove 2; the size of the cover plate 6 is adapted to the size of the waterproof shell 1, so that the cover plate 6 can be engaged with the waterproof shell 1 to seal the waterproof shell 1, thereby improving the waterproof sealing performance of the device; the position of the clamping slot 7 is arranged corresponding to the position of the groove 2, It is convenient for the card block 5 to be embedded in the card slot 7, and the connection between the cover plate 6 and the waterproof shell 1 is reinforced, thereby improving the stability of the connection between the cover plate 6 and the waterproof shell 1; the size of the rubber sealing plate 8 is adapted to the size of the rubber sealing frame 9, which is convenient for the rubber sealing plate 8 to be embedded in the rubber sealing frame 9, and the waterproof sealing performance of the device is further enhanced; moisture absorption holes are opened on the orifice plate 11, and the number of moisture absorption holes is several groups and is arranged in equidistant straight lines, so that the desiccant 10 can absorb the water vapor inside the waterproof shell 1 through the moisture absorption holes on the orifice plate 11, so that the inside of the waterproof shell 1 is always in a dry state.

[0025] The working principle and use process of the utility model are as follows: the desiccant 10 at the bottom of the orifice plate 11 is used to keep the interior of the waterproof shell 1 in a dry state at all times, and then the cover plate 6 is engaged with the waterproof shell 1 to seal the waterproof shell 1, thereby improving the waterproof sealing performance of the device. At the same time, the rubber sealing plate 8 on the cover plate 6 is engaged with the rubber sealing frame 9 on the inner wall of the waterproof shell 1 to further enhance the waterproof sealing performance of the device, thereby preventing water vapor from entering the interior of the waterproof shell 1 along the gap between the waterproof shell 1 and the cover plate 6 during use, thereby affecting the circuit board, and indirectly improving the electrical insulation performance. The service life of the circuit board is extended and the practicality is strong. During maintenance, by pressing the card block 5 inside the card slot 7, the limit block 4 connected to the card block 5 squeezes the compression spring 3 in the groove 2, thereby driving the card block 5 to leave the card slot 7 on the cover plate 6 and retract into the groove 2 on the waterproof shell 1, and then the waterproof shell 1 is opened by pulling the cover plate 6 upward, so that the maintenance personnel can directly take out the circuit board body 12 for maintenance. This design makes it more convenient for the maintenance personnel to take out the circuit board from the inside of the waterproof shell 1 during maintenance, which indirectly improves the maintenance work efficiency and meets the use requirements.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waterproof sealing structure for a PCB circuit board, characterized in that: The waterproof shell (1) comprises a waterproof shell (1), wherein a groove (2) is provided on the upper side of one side of the waterproof shell (1), a compression spring (3) is arranged inside the groove (2), a limit block (4) is arranged on one end of the compression spring (3), a clamping block (5) is arranged on one side of the limit block (4), a cover plate (6) is arranged on the outer surface of the clamping block (5), a clamping groove (7) is provided on one side of the cover plate (6), a rubber sealing plate (8) is arranged on the top of the cover plate (6), a rubber sealing frame (9) is arranged on the inner wall of the waterproof shell (1), a desiccant (10) is arranged on the bottom end of the waterproof shell (1), a perforated plate (11) is arranged on the top of the desiccant (10), a circuit board body (12) is arranged on the top of the perforated plate (11), and a wiring hole (13) is arranged on the lower front side of the waterproof shell (1).

2. A waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: There are two groups of the compression springs (3), and the two groups of the compression springs (3) are arranged corresponding to each other in the middle of the waterproof shell (1).

3. The waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: The size of the limit block (4) is matched to the size of the groove (2).

4. The waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: The size of the cover plate (6) is compatible with the size of the waterproof shell (1).

5. The waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: The position of the clamping slot (7) and the position of the groove (2) are arranged to correspond to each other.

6. The waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: The size of the rubber sealing plate (8) matches the size of the rubber sealing frame (9).

7. The waterproof sealing structure for a PCB circuit board according to claim 1, characterized in that: The orifice plate (11) is provided with moisture absorption holes, and the moisture absorption holes are provided in a plurality of groups and are arranged in equidistant straight lines.

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