Waterproof circuit board

Abstract

The utility model discloses a waterproof circuit board which comprises a sealing box. Mounting ports are formed in the upper and lower side surfaces of the sealing box, heat dissipation plates are mounted on the inner walls of the two mounting ports, a clamping block is mounted on the front side of the outer wall of the sealing box, a clamping groove is formed in the front side surface of the clamping block, a first sealing gasket is mounted on the inner wall of the clamping groove, a mounting table is mounted on the inner wall of the sealing box, and guide blocks are mounted on the left and right sides of the inner wall of the mounting table; according to the utility model, the circuit board is installed in the sealing box, the sealing cover, the first sealing gasket and the second sealing gasket are used for sealing the interface, the handle is rotated to drive the rotating rod to rotate together, and the first sealing gasket and the second sealing gasket are pushed by the stop block for pressing during rotation, so that the circuit board is sealed. And the rotating rod is mounted in the fixing block in a threaded manner for fixation, so that sealing operation is completed, and the problem of short circuit of the circuit board caused by long-term use of the circuit board in a relatively humid environment is prevented.

Description

Technical Field

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

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum base board, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed circuit board, etc. With the development of the economy, my country's electronics industry has developed very rapidly, making circuit boards used more and more in daily life.

[0003] Waterproof circuit boards in the prior art are often coated with a layer of waterproof coating on the surface of the circuit boards before leaving the factory. However, if used in a relatively humid environment for a long time, water vapor in the air will corrode the coating on the surface of the circuit boards. After long-term use, water vapor can easily penetrate the coating and contact the surface of the circuit boards. Long-term moisture exposure can also easily cause short circuits in the circuit boards.

[0004] Therefore, a waterproof circuit board is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a waterproof circuit board to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a waterproof circuit board comprises a sealing box; installation openings are provided on the upper and lower side surfaces of the sealing box, and heat dissipation plates are installed on the inner walls of the two installation openings, a card block is installed on the front side of the outer wall of the sealing box, a card slot is provided on the front side surface of the card block, a first sealing gasket is installed on the inner wall of the card slot, a mounting platform is installed on the inner wall of the sealing box, guide blocks are installed on the left and right sides of the inner wall of the mounting platform, a circuit board is installed below the inner wall of the mounting platform through bolt threads, a fixing block is installed on the front side surface of the mounting platform, a sealing cover is plugged into the outer wall of the card block, two second sealing gaskets are installed on the front side of the inner wall of the sealing cover, and the rear side surfaces of the two second sealing gaskets are both in contact with the front side surface of the sealing box, a buffer component is provided on the front side of the inner wall of the sealing cover, a through hole is provided on the front side surface of the sealing cover, a sealing ring is installed on the inner wall of the through hole, and a fixing component is provided on the sealing ring.

[0007] Preferably, the buffer assembly includes two recessed blocks, the front side surfaces of the two recessed blocks are fixed to the front side of the inner wall of the sealing cover, the front sides of the inner walls of the two recessed blocks are installed with buffer springs, and the other ends of the two buffer springs are installed with sliders.

[0008] Preferably, the fixing assembly includes a rotating rod, a rod wall of the rotating rod is rotatably mounted on the inner wall of the sealing ring, a stop block is installed on the front side of the rod wall of the rotating rod, a handle is installed on the front end of the rotating rod, and the rear end of the rotating rod is threadedly mounted on the inner wall of the fixing block.

[0009] Preferably, the two sliding blocks are respectively slidably mounted on the inner walls of the corresponding recessed blocks, and the first sealing gasket and the second sealing gasket are both made of rubber material.

[0010] Preferably, the inner wall of the sealing cover matches the outer wall of the block in size.

[0011] Preferably, sealing ports are installed on both upper and lower surfaces of the sealing box, and fixing tubes are provided on surfaces on opposite sides of the two sealing ports, and cooling fans are installed on inner walls of the two fixing tubes.

[0012] Preferably, protective covers are threadedly mounted on the upper sides of the outer walls of the two heat dissipation fans.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can install the circuit board inside the sealing box, and seal the interface through the sealing cover, the first sealing gasket and the second sealing gasket. At the same time, the rotating rod is driven to rotate together by rotating the handle. While rotating, the first sealing gasket and the second sealing gasket are pushed by the stopper to be pressed, and the rotating rod is threadedly installed inside the fixed block to be fixed, thereby completing the sealing operation and preventing the circuit board from short-circuiting due to long-term use in a relatively humid environment.

[0015] 2. The utility model is provided with a sealing port, a fixing tube, a heat dissipation fan and a protective cover. Since the circuit board generates heat when working, in order to further improve the heat dissipation efficiency, the heat transmitted is quickly discharged through the heat dissipation fan facing the heat dissipation plate, thereby improving the heat dissipation efficiency of the heat dissipation plate and thus improving the heat dissipation effect of the heat dissipation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 A magnified image of point A;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 5It is a schematic diagram of the cross-sectional connection structure of the sealing box, the mounting platform and the sliding block of the utility model.

[0021] In the figure: 1, sealing box; 2, installation port; 3, heat sink; 4, clamping block; 5, clamping slot; 6, guide block; 7, mounting table; 8, circuit board; 9, fixing block; 10, sealing cover; 11, first sealing gasket; 12, second sealing gasket; 13, recessed block; 14, buffer spring; 15, slider; 16, through hole; 17, sealing ring; 18, rotating rod; 19, stopper; 20, handle; 21, sealing port; 22, fixing cylinder; 23, heat dissipation fan; 24, protective cover. 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] Example 1: Please refer to Figure 1-5The utility model provides a technical solution: a waterproof circuit board. If a traditional circuit board 8 is used in a relatively humid environment for a long time, water vapor in the air will corrode the surface coating of the circuit board 8. After long-term use, it is easy for water vapor to penetrate the coating and contact the surface of the circuit board 8. Long-term moisture is also easy to cause a short circuit in the circuit board 8. It includes a sealing box 1; the upper and lower surfaces of the sealing box 1 are provided with mounting openings 2, and the inner walls of the two mounting openings 2 are both provided with heat dissipation plates 3. A clamping block 4 is installed on the front side of the outer wall of the sealing box 1, and a clamping groove 5 is opened on the front side surface of the clamping block 4. A first sealing gasket 11 is installed on the inner wall of the clamping groove 5. A mounting platform 7 is installed on the inner wall of the sealing box 1, and guide blocks 6 are installed on the left and right sides of the inner wall of the mounting platform 7. A circuit board 8 is installed below the inner wall of the mounting platform 7 through bolt threads, a fixing block 9 is installed on the front side surface of the mounting platform 7, and a sealing cover 10 is inserted into the outer wall of the clamping block 4. Two second sealing pads 12 are installed on the front side of the inner wall of the sealing cover 10, and the rear side surfaces of the two second sealing pads 12 are both in contact with the front side surface of the sealing box 1. A buffer component is provided on the front side of the inner wall of the sealing cover 10, and a through hole 16 is opened on the front side surface of the sealing cover 10. A sealing ring 17 is installed on the inner wall of the through hole 16, and a fixing component is provided on the sealing ring 17. By installing the circuit board 8 inside the sealing box 1, and sealing the interface through the sealing cover 10, the first sealing pad 11 and the second sealing pad 12, the rotating rod 18 is driven to rotate together by rotating the handle 20, and the first sealing pad 11 and the second sealing pad 12 are pushed by the block 19 to be pressed while rotating, and the rotating rod 18 is threadedly installed inside the fixed block 9 for fixing, thereby completing the sealing operation to prevent the circuit board 8 from short-circuiting due to long-term use in a relatively humid environment.

[0024] like Figure 3 and 5 As shown, in order to improve the convenience of installation, the buffer component includes two recessed blocks 13, the front surfaces of the two recessed blocks 13 are fixed to the front side of the inner wall of the sealing cover 10, the front sides of the inner walls of the two recessed blocks 13 are installed with buffer springs 14, and the other ends of the two buffer springs 14 are installed with sliders 15. Here, the buffer springs 14 are pushed by the sliders 15 to shrink along the inner walls of the recessed blocks 13, and at the same time, the mounting platform 7 is squeezed, which makes it convenient to control the force of turning the handle 20 and prevent damage to equipment parts.

[0025] The working principle is as follows: the utility model can quickly install and seal the circuit board 8 without damaging the surface of the circuit board 8. When in use, the circuit board 8 is placed inside the mounting platform 7. It is guided by the guide block 6 during placement, making the installation more convenient, and is fixed to the mounting platform 7 by bolts, and then the sealing cover 10 is inserted into it along the outer wall of the card block 4, and the interface is sealed by the first sealing gasket 11 and the second sealing gasket 12. At the same time, the rotating rod 18 is aligned with the inner wall of the fixing block 9 and rotated, and the rotating rod 18 is driven by the rotating handle 20 to be installed along the inner wall of the fixing block 9. When moving inward, the sealing cover 10 and the first sealing gasket 11 and the second sealing gasket 12 are pushed by the stopper 19 to further seal the interface. Since the sealing gasket itself has a certain elastic effect, the tighter the pressure, the better the sealing of the interface. The buffer spring 14 is pushed to shrink along the inner wall of the concave block 13 by the slider 15 while rotating, so as to prevent the problem of excessive force causing damage to the mounting platform 7 and the circuit board 8. The operation is simple and the sealing is good.

[0026] Example 2: Figure 2 and 3 As shown, the two sliders 15 are slidably installed on the inner walls of the corresponding recessed blocks 13, and the first sealing gasket 11 and the second sealing gasket 12 are both made of rubber material. Since the rubber material is a highly elastic polymer material with reversible deformation, it is elastic at room temperature and can produce a large deformation under a very small external force. After the external force is removed, it can return to its original state, so that when the sealing cover 10 pushes the first sealing gasket 11 and the second sealing gasket 12, the sealing performance at the interface is stronger.

[0027] like Figure 4 As shown, since the circuit board 8 generates heat when working, in order to further improve the heat dissipation efficiency, sealing ports 21 are installed on the upper and lower surfaces of the sealing box 1, and the opposite side surfaces of the two sealing ports 21 are provided with fixing cylinders 22, and the inner walls of the two fixing cylinders 22 are installed with cooling fans 23, and the upper parts of the outer walls of the two cooling fans 23 are threadedly installed with protective covers 24. The heat transmitted by the cooling fans 23 facing the heat sink 3 is quickly discharged, thereby improving the heat dissipation efficiency of the heat sink 3 and thus improving the heat dissipation effect of the heat sink 3.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof circuit board, comprising a sealing box (1); characterized in that: The sealing box (1) is provided with mounting openings (2) on both upper and lower surfaces, and heat sinks (3) are installed on the inner walls of the two mounting openings (2). A clamping block (4) is installed on the front side of the outer wall of the sealing box (1), and a clamping groove (5) is provided on the front surface of the clamping block (4). A first sealing gasket (11) is installed on the inner wall of the clamping groove (5). A mounting platform (7) is installed on the inner wall of the sealing box (1), and guide blocks (6) are installed on the left and right sides of the inner wall of the mounting platform (7). A circuit board (8) is installed below the inner wall of the mounting platform (7) through bolt threads. A fixing block (9) is installed on the front surface of the mounting platform (7), a sealing cover (10) is inserted into the outer wall of the clamping block (4), two second sealing pads (12) are installed on the front side of the inner wall of the sealing cover (10), the rear surfaces of the two second sealing pads (12) are both in contact with the front surface of the sealing box (1), a buffer component is arranged on the front side of the inner wall of the sealing cover (10), a through hole (16) is opened on the front surface of the sealing cover (10), a sealing ring (17) is installed on the inner wall of the through hole (16), and a fixing component is arranged on the sealing ring (17).

2. A waterproof circuit board according to claim 1, characterized in that: The buffer assembly comprises two recessed blocks (13), the front surfaces of the two recessed blocks (13) are fixed to the front side of the inner wall of the sealing cover (10), the front sides of the inner walls of the two recessed blocks (13) are installed with buffer springs (14), and the other ends of the two buffer springs (14) are installed with sliders (15).

3. A waterproof circuit board according to claim 1, characterized in that: The fixing assembly comprises a rotating rod (18), a rod wall of the rotating rod (18) being rotatably mounted on the inner wall of the sealing ring (17), a stopper (19) being mounted on the front side of the rod wall of the rotating rod (18), a handle (20) being mounted on the front end of the rotating rod (18), and a rear end of the rotating rod (18) being threadedly mounted on the inner wall of the fixing block (9).

4. A waterproof circuit board according to claim 2, characterized in that: The two sliding blocks (15) are respectively slidably mounted on the inner walls of the corresponding recessed blocks (13); the first sealing pad (11) and the second sealing pad (12) are both made of rubber material.

5. The waterproof circuit board according to claim 1, characterized in that: The inner wall of the sealing cover (10) matches the outer wall of the clamping block (4) in size.

6. A waterproof circuit board according to claim 1, characterized in that: The upper and lower surfaces of the sealing box (1) are both provided with sealing openings (21), the surfaces on the opposite sides of the two sealing openings (21) are both provided with fixing tubes (22), and the inner walls of the two fixing tubes (22) are both provided with cooling fans (23).

7. A waterproof circuit board according to claim 6, characterized in that: Protective covers (24) are threadedly mounted on the upper sides of the outer walls of the two heat dissipation fans (23).

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