CN106686930A - A waterproof PCB board box and a washing machine with the board box - Google Patents

Abstract

The invention discloses a waterproof PCB (Printed Circuit Board) box, which comprises a box cover, wherein a front panel and/or a bottom panel of the box cover are/is provided with a plurality of heat dissipation holes. The characteristics lie in that water retaining structures are arranged at the heat dissipation holes, wherein the water retaining structure at the bottom panel comprises a plurality of first water retaining pieces which are obliquely arranged in a shutter manner, and adjacent two first water retaining pieces define a first heat dissipation hole; and the water retaining structure at the front panel comprises a plurality of second water retaining pieces which are uniformly set and obliquely arranged, and adjacent two second water retaining pieces define a second heat dissipation hole. The beneficial effects are that the waterproof performance of a driving board box or a driving board box cover is improved to the maximum extent while the heat dissipation performance of a driving board is ensured through additionally arranging the water retaining structures in the heat dissipation holes, and the safety performance of a product is enhanced.

Description

a waterproof PCB Board box and washing machine with the board box

technical field

The present invention relates to PCB (Printed Circuit Board, printed circuit board, referred to as PCB in Chinese) board box, specifically, relates to a waterproof PCB board box and a washing machine with the board box.

Background technique

Due to the impact of the working environment, when electrical components such as computer boards, power boards, and driver boards are installed on household appliances such as washing machines and dishwashers, it is inevitable that they will come into contact with water or be soaked by water. As we all know, once the electrical components are soaked in water, a short circuit may occur, causing equipment and even houses to catch fire, causing safety accidents. In order to eliminate potential safety hazards, such electrical devices are usually installed on the equipment with the help of computer board boxes, power board boxes, drive board boxes and corresponding box covers, etc., which can waterproof the electrical components. The structure such as the box cover needs to open holes to dissipate heat while being waterproof, and cannot be completely sealed. At present, the commonly used solution is to reduce the opening area of the board box as much as possible while ensuring the heat dissipation. The heat dissipation holes on the bottom surface of the existing drive board box cover structure do not have any water retaining structure, and water flow or water droplets can directly splash or flow into the inside of the drive board box to soak the drive board. Although the cooling holes on the front panel have improved the waterproof performance to a certain extent, the practical effect is still unsatisfactory, and sometimes some cooling holes have to be blocked.

Aiming at the problems in the related technologies, no effective solution has been proposed yet.

Contents of the invention

Aiming at the above-mentioned technical problems in the related art, the present invention proposes a waterproof PCB board box and a washing machine with the board box, which can effectively prevent the hidden danger of short circuit of the internal electrical components while dissipating heat, and improve the The safety performance of electrical equipment.

For realizing above-mentioned technical purpose, technical scheme of the present invention is realized like this:

A waterproof PCB board box, comprising a box cover, the front panel and/or the bottom panel of the box cover are provided with a plurality of cooling holes, and the cooling holes are provided with a water-retaining structure. Among them, the water-retaining structure on the bottom panel includes a number of first water-retaining sheets arranged obliquely in the shape of louvers, and two adjacent first water-retaining sheets define a first cooling hole; the water-retaining structure on the front panel includes a uniform A plurality of second water baffles arranged obliquely, two adjacent second water baffles define a second cooling hole.

Further, a blocking rib is provided in the second heat dissipation hole to prevent liquid from flowing into the plate box. The barrier rib separates the heat dissipation hole into upper and lower parts, and the outer side of the upper part of the heat dissipation hole is closed.

Further, near the lower edge of the front panel, there is a semi-panel that is perpendicular to the front panel and prevents liquid from flowing into the first cooling hole. The semi-coaming board includes integrally formed long slats and turning slats located at both ends of the long slats. The long slats and turning slats are perpendicular to each other and the connection has a smooth arc.

A washing machine is provided with the above-mentioned waterproof PCB board box.

Beneficial effects of the present invention: the present invention increases the water-retaining structure in the heat dissipation hole, while ensuring the heat dissipation of the drive board, it maximizes the waterproof performance of the drive board box or the drive board box cover, and enhances the safety of the product performance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a perspective view of a waterproof PCB board box according to an embodiment of the present invention;

Fig. 2 is a partially enlarged schematic diagram of the first water retaining sheet according to an embodiment of the present invention;

Fig. 3 is a front view of the drive board box cover according to an embodiment of the present invention;

Fig. 4 is a front view of the bottom surface of the drive board box cover according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the drive board box cover according to an embodiment of the present invention.

In the picture:

1. Front panel; 2. Bottom panel; 3. Cooling hole (first or second cooling hole); 4. Driver board box cover; Water retaining sheet; 8, blocking ribs; 9, semi-coaming board.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in Figures 1-5, the embodiment of the present invention provides a waterproof PCB board box, the front panel 1 and/or bottom panel 2 of the box cover 4 in the waterproof PCB board box are provided with a number of cooling holes 3, so The heat dissipation hole 3 is provided with a water retaining structure, and the heat dissipation hole 3 is used to dissipate heat for the internal drive board to prevent the temperature of the drive board from being too high during long-term operation, and the water retaining structure provided can prevent liquid If it flows into the inside of the board box, it will cause a potential short circuit of the driver board.

The water retaining structure located on the bottom panel 2 of the box cover 4 includes a number of first water retaining sheets 5 arranged in a louver shape. The water retaining structure on 1 includes a coaming plate 6, in which a number of second water retaining pieces 7 arranged obliquely are evenly arranged, and two adjacent second water retaining plates 7 define a second cooling hole, wherein the second The inner side of the heat dissipation hole is provided with a barrier rib 8 that prevents the liquid from flowing into the board box. The barrier rib 8 separates the heat dissipation hole into upper and lower parts, and the outer side of the upper part of the heat dissipation hole is closed. The barrier rib 8 can further prevent the liquid from flowing into the plate box. Splash or flow into the inside of the board box through the second heat dissipation hole improves the waterproof performance.

Both the first water blocking sheet 5 and the second water blocking sheet 7 are inclined sideways, and the inclination angle thereof is preferably 30 to 45 degrees.

In addition, the water retaining structure on the bottom panel 2 contains several half sections of the first water retaining sheet, and several half sections of the first water retaining sheet are concentrated on one side of the water retaining structure on the bottom panel, and the length of the half of the first water retaining sheet is Half of the first water barrier.

Near the edge of the front panel 1 is provided with a semi-panel 9 which is perpendicular to the front panel 1 and prevents the liquid from flowing into the first cooling hole. The slats, the long slats and the turning slats are perpendicular to each other and the joints have smooth arcs.

In order to facilitate the understanding of the above-mentioned technical solution of the present invention, the above-mentioned technical solution of the present invention will be described in detail below through a specific usage mode.

In specific use, according to the waterproof PCB board box of the present invention, as shown in Figure 1, it is the structure of the drive board box cover of the present invention, the structure of the heat dissipation hole 3 on the front panel 1 and the structure of the heat dissipation hole 3 on the bottom panel 2 are different from According to the prior art structure, the designed water retaining plate structure has shown excellent waterproof performance in practical verification, so that the waterproof performance of the waterproof PCB board box according to the present invention is far greater than that of the existing structure.

Figure 3 shows the front view of the driver board box cover. There is no gap in the heat dissipation hole, that is, water cannot enter the interior from this direction, and then wet the driver board.

Figure 4 shows the front view of the bottom of the driver board box cover. The heat dissipation holes are blocked by the water baffle, that is, water cannot enter the interior from the bottom. At the same time, it has been proved comprehensively through practice that the water flow or water droplets around the bottom panel of the drive board cover can enter the inside of the drive board cover only along the direction of the first water barrier, affecting the function of the drive board.

As shown in FIG. 5 , the present invention further adds blocking ribs to the heat dissipation holes inside the drive board box cover to solve the possibility that water flow or water droplets will enter the inside of the drive board box cover along the first water baffle. Furthermore, the present invention also ensures the waterproofness of the drive plate box cover while ensuring the heat dissipation, so that it is improved to the maximum extent.

The present invention also provides a washing machine, which is provided with the above-mentioned waterproof PCB board box, through which the safety performance of the washing machine can be guaranteed.

To sum up, with the help of the above technical solution of the present invention, the present invention increases the water blocking structure in the heat dissipation hole, while ensuring the heat dissipation of the drive board, it maximizes the performance of the drive board box or the drive board box cover. Waterproof performance enhances the safety performance of the product.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. A waterproof PCB board box, comprising a lid, the front panel and/or the bottom panel of the lid are provided with some heat dissipation holes, it is characterized in that, the heat dissipation holes are provided with a water retaining structure, wherein, The water retaining structure on the bottom panel includes a number of first water retaining sheets arranged obliquely in the shape of louvers, and two adjacent first water retaining sheets define a first cooling hole; the water retaining structure on the front panel includes uniformly arranged and A plurality of second water baffles arranged obliquely, two adjacent second water baffles define a second cooling hole. 2. The waterproof PCB board box according to claim 1, characterized in that, the inside of the second cooling hole is provided with a blocking rib, and the blocking rib separates the cooling hole into upper and lower parts, and the upper part of the cooling hole The outside is closed. 3. The waterproof PCB board box according to claim 1, characterized in that, both the first water blocking sheet and the second water blocking sheet are inclined sideways. 4 . The waterproof PCB board box according to claim 1 , wherein a shroud is arranged on the outside of the water retaining structure on the front panel. 5 . 5 . The waterproof PCB board box according to claim 1 , wherein a semi-panel perpendicular to the front panel is provided near the lower edge of the front panel. 5 . 6 . The waterproof PCB board box according to claim 5 , wherein the half enclosure comprises integrally formed long slats and turning slats located at both ends of the long slats. 7 . 7. The waterproof PCB board box according to claim 6, characterized in that, the long slats and the turning slats are perpendicular to each other and the connection has a smooth arc. 8. A washing machine, characterized in that the above-mentioned waterproof PCB board box is arranged on the washing machine.