CN216565962U

CN216565962U - Waterproof circuit board

Info

Publication number: CN216565962U
Application number: CN202122972315.0U
Authority: CN
Inventors: 陈凯
Original assignee: Hx Circuit Technology Co ltd
Current assignee: Hx Circuit Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-17
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a waterproof circuit board which comprises a placing box, wherein a cover plate is arranged at the upper end of the placing box, four corners of the upper end of the cover plate are provided with accommodating holes, screws are arranged in the accommodating holes and extend into the placing box, first frame blocks are fixedly arranged on the left wall and the right wall of an inner cavity of the placing box, the upper ends of the two first frame blocks are jointly clamped with an encapsulating rubber block, a circuit board main body is arranged in the encapsulating rubber block, the circuit board main body is electrically connected with a connecting circuit, and the upper end of the connecting circuit sequentially penetrates through the encapsulating rubber block and the cover plate and extends to the upper part of the cover plate. According to the waterproof circuit board, the circuit board main body is sealed by the potting adhesive block, so that the circuit board main body is in a sealed environment, the circuit board main body is effectively prevented from contacting humid air, the potting adhesive block is wrapped by the cooling liquid, the heat dissipation capacity of the potting adhesive block is improved, and the service life of the circuit board main body is prolonged.

Description

Waterproof circuit board

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a waterproof circuit board.

Background

The circuit board is the most active industry in the modern electronic component industry, and the industry growth speed of the circuit board is generally higher than that of the electronic component industry by about 3 percent. The circuit board has the following names: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout.

The prior circuit board has the following disadvantages: 1. the existing circuit board has poor waterproof capability and cannot be applied to a humid environment; 2. the existing circuit board is mostly subjected to waterproof treatment by adopting a nano waterproof coating, but the heat dissipation capability of the circuit board after the nano waterproof coating is sprayed is greatly reduced, and the service life of the circuit board is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a waterproof circuit board which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a waterproof circuit board, is including placing the box, it is provided with the apron to place the box upper end, the accommodation hole has all been opened in apron upper end four corners, be provided with the screw in the accommodation hole, the screw extends to and places in the box, it has first frame piece, two to place the equal fixed mounting of box inner chamber left side wall and inner chamber right side wall the common joint in first frame piece upper end has the embedment to glue the piece, the inside circuit board main part that is provided with of embedment glue piece, circuit board main part electric connection has interconnecting link, the interconnecting link upper end runs through the embedment in proper order and glues piece and apron to extend to the apron top, it is full of the coolant liquid to place to fill up jointly between box inner chamber and the apron lower terminal surface.

Preferably, terminal surface outside fixed mounting has the sealing strip under the apron, the sealing strip longitudinal section is cascaded structure, the inboard fixed mounting of terminal surface has the locating frame under the apron, locating frame lower extreme fixed mounting has the sealing washer, locating frame inner wall and sealing washer inner wall all glue piece surface in close contact with the embedment, the equal fixed mounting in apron lower extreme four corners has the registration arm, four the registration arm is located four accommodation holes respectively under.

Preferably, the equal fixed mounting in placing box inner chamber antetheca and inner chamber back wall has the second frame piece, it has the seal groove to place box upper end open, seal groove and sealing strip phase-match, it has the connecting plate to place the equal fixed mounting in box inner wall four corners, it has the locating hole to open on the connecting plate, it has the screw to open the locating hole lower wall.

Preferably, the positioning hole is matched with the positioning pipe, and the screw hole is matched with the screw.

Preferably, the second frame block and the first frame block are located on the same horizontal plane, and both the second frame block and the first frame block are in L-shaped structures.

Preferably, the upper end face of the potting rubber block is in close contact with the lower end face of the cover plate.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the waterproof circuit board, the circuit board main body is sealed by the potting adhesive block, so that the circuit board main body is in a relatively sealed environment, the circuit board main body is effectively prevented from contacting humid air, the environmental adaptability of the circuit board main body is improved, and the phenomena that the circuit board main body is contacted with water and then short circuit occurs and the like are avoided;

2. according to the waterproof circuit board, the circuit board main body is sealed by the potting rubber block, the potting rubber block is placed in the placing box, the potting rubber block is erected in the inner cavity of the placing box by arranging the first frame block and the second frame block, and finally the potting rubber block is wrapped by the cooling liquid, so that the heat dissipation capacity of the potting rubber block is improved by the cooling liquid, and the service life of the circuit board main body is prolonged;

3. according to the waterproof circuit board, the cover plate is arranged to seal the placing box, so that the potting adhesive block is completely positioned in the placing box, the probability that the potting adhesive block is damaged by the outside is reduced, and the service life of the circuit board main body is further prolonged;

4. according to the waterproof circuit board, the sealing effect between the cover plate and the placing box is improved by arranging the sealing strip and the sealing groove, so that the loss of cooling liquid is avoided, and the sealing effect between the potting rubber block and the cover plate is improved by arranging the positioning frame and the sealing ring, so that the cooling liquid is prevented from flowing out from a gap between the cover plate and a connecting circuit.

Drawings

FIG. 1 is a schematic view of an overall structure of a waterproof circuit board according to the present invention;

FIG. 2 is a cross-sectional view of an overall structure of a waterproof circuit board according to the present invention;

FIG. 3 is a schematic view of a part of a waterproof circuit board according to the present invention;

FIG. 4 is a schematic view of the overall structure of a cover plate of a waterproof circuit board according to the present invention;

FIG. 5 is a schematic view of the overall structure of a waterproof circuit board storage case according to the present invention;

fig. 6 is a schematic view of an overall structure of a circuit board main body of a waterproof circuit board according to the present invention.

In the figure: 1. placing the box; 2. a cover plate; 3. an accommodation hole; 4. a screw; 5. a first rack block; 6. encapsulating the rubber block; 7. a circuit board main body; 8. connecting a line; 9. cooling liquid; 21. a sealing strip; 22. a positioning frame; 23. a seal ring; 24. a positioning tube; 31. a second rack block; 32. a connecting plate; 33. positioning holes; 34. a screw hole; 35. sealing the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-6, a waterproof circuit board, including placing box 1, it is provided with apron 2 to place box 1 upper end, the accommodation hole 3 has all been opened in apron 2 upper end four corners, be provided with screw 4 in the accommodation hole 3, screw 4 extends to and places in the box 1, it has first frame piece 5 to place the equal fixed mounting of box 1 inner chamber left wall and the inner chamber right wall, the joint has potting compound piece 6 two first frame piece 5 upper ends jointly, inside circuit board main part 7 that is provided with of potting compound piece 6, circuit board main part 7 electric connection has interconnecting link 8, interconnecting link 8 upper end runs through potting compound piece 6 and apron 2 in proper order, and extend to apron 2 top, it is full of coolant liquid 9 to place to fill up jointly between box 1 inner chamber and the apron 2 terminal surface.

2 end outside of the surface fixed mounting of apron have sealing strip 21, sealing strip 21 longitudinal section is cascaded structure, 2 end inside of the surface fixed mounting of apron have locating

frame

22, 22 lower extreme fixed mounting of locating frame has sealing washer 23, locating frame 22 inner wall and sealing washer 23 inner wall all with 6 surface in close contact with of embedment gluey piece, 2 equal fixed mounting in lower extreme four corners of apron have a registration arm 24, four registration arms 24 are located four accommodation holes 3 respectively under, at first play the positioning action through setting up registration arm 24, be convenient for use screw 4 and screw 34 carry out threaded connection, secondly improve the sealed effect between apron 2 and the connecting plate 32.

Place box 1 inner chamber antetheca and inner chamber back wall equal fixed mounting have second frame piece 31, place box 1 upper end and open and have seal groove 35, seal groove 35 and sealing strip 21 phase-match, place box 1 inner wall four corners equal fixed mounting have connecting plate 32, and connecting plate 32 upper end is opened has locating hole 33, and locating hole 33 lower wall is opened there is screw 34.

The positioning hole 33 is matched with the positioning pipe 24, the screw hole 34 is matched with the screw 4, and the placing box 1 is made of heat conducting materials, so that heat dissipation of the cooling liquid 9 is facilitated.

Second frame piece 31 and first frame piece 5 are located same horizontal plane, and second frame piece 31 and first frame piece 5 all are L shape structure, make the potting glue piece 6 can't carry out fore-and-aft direction, left and right directions and displacement in the direction of going down through first frame piece 5 and second frame piece 31.

The upper end face of the potting adhesive block 6 is in close contact with the lower end face of the cover plate 2, and the potting adhesive block 6 cannot move upwards by the cover plate 2.

It should be noted that, the utility model is a waterproof circuit board, the circuit board main body 7 is sealed by arranging the potting compound block 6, so that the circuit board main body 7 is in a relatively sealed environment, the circuit board main body 7 is effectively prevented from contacting humid air, the environmental adaptability of the circuit board main body 7 is improved, the phenomenon that the circuit board main body 7 contacts water and further generates short circuit and the like is avoided, then the potting compound block 6 is placed in the placing box 1, the potting compound block 6 is erected in the inner cavity of the placing box 1 by arranging the first frame block 5 and the second frame block 31, finally the potting compound block 6 is wrapped by the cooling liquid 9, the heat dissipation capability of the potting compound block 6 is improved by the cooling liquid 9, the service life of the circuit board main body 7 is prolonged, the sealing effect between the cover plate 2 and the placing box 1 is improved by arranging the sealing strip 21 and the sealing groove 35, and the loss of the cooling liquid 9 is avoided, improve the sealed effect between the encapsulating piece 6 and the apron 2 again through setting up locating frame 22 and sealing washer 23, avoid coolant liquid 9 to flow out from the clearance between apron 2 and interconnecting link 8, through setting up the sealed box 1 of placing of apron 2 for inside the encapsulating piece 6 is in completely placing box 1, reduce the encapsulating piece 6 and suffer the probability of external destruction, and then the life of extension circuit board main part 7.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A waterproof circuit board, is including placing box (1), its characterized in that: place box (1) upper end and be provided with apron (2), accommodation hole (3) have all been opened in apron (2) upper end four corners, be provided with screw (4) in accommodation hole (3), screw (4) extend to place in box (1), place the equal fixed mounting of box (1) inner chamber left side wall and inner chamber right side wall and have first frame piece (5), two the common joint in first frame piece (5) upper end has embedment to glue piece (6), the embedment is glued piece (6) inside and is provided with circuit board main part (7), circuit board main part (7) electrically connected has interconnecting link (8), interconnecting link (8) upper end runs through embedment in proper order and glues piece (6) and apron (2) to extend to apron (2) top, it is full of coolant liquid (9) to place to fill up between box (1) inner chamber and apron (2) lower terminal surface jointly.

2. The waterproof circuit board of claim 1, wherein: the utility model discloses a building structure, including apron (2), sealing strip (21) longitudinal section, locating frame (22) lower extreme face inboard fixed mounting has, locating frame (22) lower extreme fixed mounting has sealing washer (23), locating frame (22) inner wall and sealing washer (23) inner wall all glue piece (6) surface in close contact with the embedment, the equal fixed mounting in apron (2) lower extreme four corners has registration arm (24), four registration arm (24) are located four accommodation holes (3) respectively under.

3. A water-resistant circuit board according to claim 2, characterized in that: place equal fixed mounting in box (1) inner chamber antetheca and inner chamber back wall and have second frame piece (31), it has seal groove (35) to place box (1) upper end to open, seal groove (35) and sealing strip (21) phase-match, it has connecting plate (32) to place the equal fixed mounting in box (1) inner wall four corners, open connecting plate (32) upper end has locating hole (33), open locating hole (33) lower wall has screw (34).

4. A water-resistant circuit board according to claim 3, characterized in that: the positioning hole (33) is matched with the positioning pipe (24), and the screw hole (34) is matched with the screw (4).

5. The waterproof circuit board of claim 4, wherein: the second frame block (31) and the first frame block (5) are located on the same horizontal plane, and the second frame block (31) and the first frame block (5) are both in L-shaped structures.

6. The waterproof circuit board of claim 5, wherein: the upper end face of the potting rubber block (6) is in close contact with the lower end face of the cover plate (2).