CN220896891U

CN220896891U - Corrosion-resistant PCB circuit board

Info

Publication number: CN220896891U
Application number: CN202322388767.3U
Authority: CN
Inventors: 陶继宏; 许成桥; 李二姣; 赵明
Original assignee: Guangde Wanzheng Electronic Technology Co ltd
Current assignee: Guangde Wanzheng Electronic Technology Co ltd
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-05-03
Anticipated expiration: 2033-09-04

Abstract

The utility model relates to the technical field of PCB circuit boards, in particular to a corrosion-resistant PCB circuit board, which comprises a substrate and a shell, wherein the substrate is arranged in the shell, an electronic element is arranged on the substrate, three-proofing paint is coated on one side of the substrate, on which the electronic element is arranged, and on the electronic element, the top end of the shell is opened, a box cover is arranged on the shell in a sliding manner, the box cover is matched with the shell, a spring is connected to the shell, the box cover is arranged on the spring, and a water absorbing sponge is arranged on one side of the box cover, which is close to the circuit board, and is used for absorbing moisture entering the shell.

Description

Corrosion-resistant PCB circuit board

Technical Field

The utility model relates to the technical field of PCB circuit boards, in particular to a corrosion-resistant PCB circuit board.

Background

In the use process of the electronic product, the circuit board is often exposed to a corrosive environment due to uncertain factors of external working conditions, and the working performance of the circuit board is seriously affected.

In the prior art, the application number is as follows: 202021968313.3 is disclosed by the name: the utility model provides an anticorrosive circuit board, wherein includes circuit board body and anticorrosive shell, anticorrosive shell is upper portion open type rectangle, and the circuit board body sets up in anticorrosive shell central point put, anticorrosive shell keeps away from circuit board body top installation and is provided with the apron, anticorrosive shell one end is provided with the connection port.

However, in the prior art, the application number is as follows: 202021968313.3, the circuit board is arranged in the anti-corrosion shell in a sealing way, so that the heat dissipation of the circuit board is influenced while the circuit board can resist corrosion, heat generated in the working process of the circuit board cannot be timely evacuated, the service life of the circuit board is seriously influenced, or the circuit board is damaged, and therefore, the utility model provides the anti-corrosion PCB circuit board.

Disclosure of utility model

The utility model aims to provide a corrosion-resistant PCB (printed Circuit Board) to solve the problems in the prior art.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a corrosion-resistant PCB circuit board, the circuit board includes base plate and shell, the base plate is installed in the shell, install electronic component on the base plate, the base plate is installed one side of electronic component and all is scribbled three proofings lacquer on the electronic component.

The novel water absorbing device is characterized in that the top end of the shell is open, the shell is provided with a box cover in a sliding mode, the box cover is matched with the shell, a spring is connected to the shell, the box cover is arranged on the spring, and a water absorbing sponge is arranged on one side, close to the circuit board, of the box cover and used for absorbing water entering the shell.

Further, a weight sensor is further installed on one side of the shell and arranged below the box cover, a round hole is formed in the shell, and the weight sensor is electrically connected with an indicating device arranged outside through the round hole.

Further, the one end that electronic component was kept away from to the base plate is scribbled heat conduction silicone grease, still be provided with fin one on the heat conduction silicone grease, one side that heat conduction silicone grease was kept away from to fin one is connected with the heat dissipation post, still be connected with fin two on the heat dissipation post, shell bottom opening, fin two sets up in the bottom of shell, and with the shell adaptation, the spring is installed on fin two, and fin one and heat dissipation post all set up in the shell.

Further, a plurality of through holes are formed in the heat dissipation column and the shell to assist heat dissipation.

Further, through grooves are formed in two sides of the shell, and the substrate is connected with the external connecting piece through the through grooves.

Further, three-proofing paint is coated on the periphery of the substrate.

The utility model has the beneficial effects that:

1. The three-proofing paint is coated on the circuit board and the electronic element on the circuit board, so that the circuit board can effectively isolate moisture, resist high and low temperature and prevent electric leakage of the circuit board, and the heat conduction silicone grease is coated on one side of the circuit board far away from the electronic element, so that the heat generated by the circuit board can be led out to the first radiating fin and the second radiating fin while the heat conduction silicone grease isolates moisture, and corrosion resistance and heat dissipation are realized at the same time;

2. The utility model also provides the water-absorbing sponge, which can further absorb the water entering the shell, so that the problem that when the three-proofing paint has bubbles, the water is easy to permeate into the circuit board to cause corrosion by the bubbles is avoided, the water-absorbing sponge is arranged on the box cover, the box cover is arranged on the shell in a sliding way, when the water absorption of the water-absorbing sponge reaches the maximum value, the water-absorbing sponge can drive the box cover to slide downwards, the box cover is contacted with the weight sensor, the weight sensor transmits a signal to an external indicating device, and the indicating device sends out a signal to prompt a worker to replace the sponge in time.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall internal structure of the present utility model;

FIG. 2 is a schematic diagram of a PCB structure of the present utility model;

fig. 3 is a schematic view of the overall structure of the present utility model.

The reference numerals are as follows:

1. A substrate; 2. a housing; 3. an electronic component; 4. a box cover; 5. a spring; 6. a water absorbing sponge; 7. a weight sensor; 8. an indication device; 9. heat conductive silicone grease; 10. a first radiating fin; 11. a heat radiation column; 12. a second radiating fin; 13. and (5) through grooves.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Please combine fig. 1-3, a corrosion-resistant PCB circuit board, the circuit board includes base plate 1 and shell 2, and base plate 1 installs in shell 2, installs electronic component 3 on base plate 1, and the side of base plate 1 installation electronic component 3 and electronic component 3 are last all to scribble three proofings lacquer, and when scribbling three proofings lacquer, the dynamics of spraying and the viscosity of the three proofings lacquer of selecting to use are rationally selected according to actual conditions, avoid producing too many bubbles and lead to three proofings lacquer result in the result of use not good.

The shell 2 open top, the slip is provided with lid 4 on the shell 2, lid 4 and shell 2 adaptation are connected with spring 5 on the shell 2, lid 4 installs on spring 5, spring 5 is used for supporting lid 4, when the sponge 6 that absorbs water is not absorbed, and spring 5 slightly compresses, and at this moment, lid 4 just is located the top of shell 2, makes shell 2 top seal, and the sponge 6 that absorbs water is installed to one side that lid 4 is close to the circuit board for adsorb the moisture that enters into in the shell 2.

The weight sensor 7 is also installed to shell 2 one side, and sets up in the below of lid 4, opens the round hole on the shell 2, and weight sensor 7 passes through the indicating device 8 electric connection that the round hole was equipped with the outside.

When the water absorbing sponge 6 absorbs enough water, the weight of the water absorbing sponge 6 is increased, the box cover 4 connected with the water absorbing sponge 6 slides downwards, the box cover 4 contacts with the weight sensor 7, the water absorbing sponge 6 is indicated to have the maximum water absorbing capacity, at the moment, the weight sensor 7 transmits a signal to the connected external indicating device 8, the external indicating device 8 reacts, and workers are reminded of timely replacing the water absorbing sponge 6.

The one end that electronic component 3 was kept away from to base plate 1 scribbles heat conduction silicone grease 9, still be provided with fin one 10 on the heat conduction silicone grease 9, one side that heat conduction silicone grease 9 was kept away from to fin one 10 is connected with a plurality of heat dissipation posts 11, still be connected with fin two 12 on the heat dissipation post 11, shell 2 bottom opening, fin two 12 set up in the bottom of shell 2, and with shell 2 adaptation, spring 5 installs on fin two 12, fin one 10 and heat dissipation post 11 all set up in shell 2, fin one 10, fin two 12 and connect the heat dissipation post 11 of both together dispel the heat, make the heat dissipation faster.

A plurality of through holes are formed on the heat dissipation column 11 and the shell 2 so as to increase the contact area of the heat dissipation column 11 and air to assist heat dissipation.

Through grooves 13 are formed in two sides of the shell 2, the substrate 1 is connected with an external connecting piece through the through grooves 13, and three-proofing paint is coated on the periphery of the substrate 1, so that the periphery of the substrate 1 is prevented from being corroded by moisture or other factors.

Working principle: the circuit board is sprayed with the three-proofing paint on the periphery of the circuit board and on one surface of the circuit board, which is provided with the electronic element 3, so that the circuit board is prevented from being damaged due to the fact that moisture or corrosive substances contact the circuit board in the using process, and bubbles possibly appear in the process of spraying the three-proofing paint, so that the box cover 4 is slidably arranged on the shell 2 of the circuit board, the water absorbing sponge 6 is arranged on the box cover 4, the water absorbing sponge 6 can absorb the moisture in the shell 2, and the bubbles generated when the water absorbing sponge passes through the three-proofing paint are prevented from entering the circuit board, so that the circuit board is corroded.

After the water absorption sponge 6 absorbs moisture, the water absorption sponge 6 can drive the connected box cover 4 to slide downwards, after the water absorption sponge 6 absorbs enough moisture, the water absorption sponge 6 drives the box cover 4 to slide downwards to be in contact with the weight sensor 7, and after the weight sensor 7 is in sliding contact with the box cover 4, signals can be transmitted to the indicating device 8 electrically connected with the outside, the indicating device 8 can give out signals, and workers can receive the signals and replace the water absorption sponge 6 in time.

The circuit board generates heat during operation, the heat is transferred to the first radiating fin 10 through the heat-conducting silicone grease 9, the second radiating fin 12 is connected to the first radiating fin 10 through the heat-radiating column 11, and the heat is dissipated through the first radiating fin 10, the heat-radiating column 11 and the second radiating fin 12, so that the heat dissipation of the circuit board is prevented by the shell 2 during use.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The corrosion-resistant PCB circuit board is characterized by comprising a substrate (1) and a shell (2), wherein the substrate (1) is installed in the shell (2), an electronic element (3) is installed on the substrate (1), and three-proofing paint is coated on one side of the substrate (1) where the electronic element (3) is installed and on the electronic element (3);

the novel water absorbing device is characterized in that the top end of the shell (2) is provided with an opening, the shell (2) is provided with a box cover (4) in a sliding mode, the box cover (4) is matched with the shell (2), a spring (5) is connected to the shell (2), the box cover (4) is arranged on the spring (5), and a water absorbing sponge (6) is arranged on one side, close to a circuit board, of the box cover (4) and used for absorbing water entering the shell (2).

2. The corrosion-resistant PCB circuit board according to claim 1, wherein a weight sensor (7) is further installed on one side of the housing (2) and is arranged below the box cover (4), a round hole is formed in the housing (2), and the weight sensor (7) is electrically connected with an indicating device (8) arranged outside through the round hole.

3. The corrosion-resistant PCB board of claim 1, wherein one end of the substrate (1) far away from the electronic component (3) is coated with a heat-conducting silicone grease (9), a first heat-dissipating fin (10) is further arranged on the heat-conducting silicone grease (9), a heat-dissipating post (11) is connected to one side of the first heat-dissipating fin (10) far away from the heat-conducting silicone grease (9), a second heat-dissipating fin (12) is further connected to the heat-dissipating post (11), the bottom end of the housing (2) is opened, the second heat-dissipating fin (12) is arranged at the bottom of the housing (2) and is matched with the housing (2), the spring (5) is mounted on the second heat-dissipating fin (12), and both the first heat-dissipating fin (10) and the heat-dissipating post (11) are arranged in the housing (2).

4. A corrosion-resistant PCB according to claim 3, wherein a plurality of through holes are provided in the heat dissipation post (11) and in the housing (2) to assist in heat dissipation.

5. The corrosion-resistant PCB of claim 1, wherein through slots (13) are formed on both sides of the housing (2), and the substrate (1) is connected to an external connector through the through slots (13).

6. The corrosion-resistant PCB (printed circuit board) as claimed in claim 1, wherein three-proofing paint is coated on the periphery of the substrate (1).