Anti-erosion PCB packaging structure

Abstract

The invention relates to an anti-erosion PCB packaging structure, and relates to the technical field of PCB packaging, the anti-erosion PCB packaging structure comprises a base, the base is provided with a positioning installation groove, and the positioning installation groove is communicated in an end-to-end manner and is in a shape like a Chinese character'hui 'as a whole; the top cover is arranged on the base in a covering mode, four fixing plates are fixedly installed at the end, close to the base, of the top cover, the four fixing plates are sequentially and fixedly connected end to end, and the fixing plates are embedded in the positioning installation grooves; the sealing assembly is mounted on the base, and the sealing assembly is used for sealing a gap between the base and the top cover; and the fixing assembly is installed on the base, the fixing assembly is connected with the top cover, and the fixing assembly is used for connecting the base and the top cover. The PCB packaging structure has the advantages that the PCB packaging leakproofness is improved, and the service life of the PCB is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of PCB packaging, and in particular, to an anti-erosion PCB packaging structure. Background Art

[0002] The PCB board is a carrier for mounting various electronic components. The electronic components connected to the PCB board need to be packaged, and the PCB board packaging can provide functions such as electrical connection, protection, support, and heat dissipation for the PCB board.

[0003] Regarding the above related technologies, at present, the packaging structures of PCB boards are mostly relatively simple, which leads to insufficient tightness after the PCB boards are packaged. Moisture and impurities are likely to enter the PCB packaging structure and erode the PCB board, affecting the normal use of the PCB board and reducing the service life of the PCB board. Summary of the Invention

[0004] In order to improve the tightness of the PCB board packaging and extend the service life of the PCB board, the present application provides an anti-erosion PCB packaging structure.

[0005] An anti-erosion PCB packaging structure provided by the present application adopts the following technical solutions: An anti-erosion PCB packaging structure includes: A base, on which a positioning installation groove is provided. The positioning installation groove is connected end to end and is in an overall shape of a rectangle with a hole in the middle; A top cover, which is covered on the base. Four fixing plates are fixedly installed at one end of the top cover close to the base. The four fixing plates are fixedly connected end to end in sequence, and the fixing plates are embedded in the positioning installation groove; A sealing component, which is installed on the base and is used to seal the gap between the base and the top cover; A fixing component, which is installed on the base and is connected to the top cover. The fixing component is used to connect the base and the top cover; Among them, the sealing component includes: Four first telescopic rods, the fixed ends of the four first telescopic rods are evenly and fixedly embedded in the bottom wall of the positioning installation groove. The movable ends of the first telescopic rods are located in the positioning installation groove, and the movable ends of the first telescopic rods are in contact with the fixing plates; A nozzle, which is embedded and fixedly installed on the inner wall of the positioning installation groove; A first connecting pipe, one end of the first connecting pipe is communicated with the nozzle, and the other end of the first connecting pipe is communicated with the rodless cavity of the first telescopic rod; It should be noted that there is an inaccuracy in the original text. 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[0006] By adopting the above technical solution, when a corrosion-resistant PCB packaging structure is used to package a PCB board, the PCB board is placed in the placement groove, the top cover is set on the base, and the first thermal conductive rubber pad and the second thermal conductive rubber pad are both tightly fitted with the PCB board. When the top cover is set on the base, the sealing component is driven to work, and the sealing component seals the positioning installation groove. At the same time, the fixing component works, and the fixing component fixes the position of the top cover to improve the connection stability between the top cover and the base. When the PCB board is packaged, the top cover is set on the base, the fixing plate abuts against the first telescopic rod, and the top cover is pushed to move in the direction close to the base, the length of the first telescopic rod is shortened, and the water in the rodless cavity of the first telescopic rod flows into the first connecting pipe, and the water in the first connecting pipe flows to the nozzle, and the water is sprayed from the nozzle and sprayed on the water-absorbing and expanding rubber ring. The water-absorbing and expanding rubber ring expands when it encounters water and abuts against the fixing plate, so that the internal space of the positioning installation groove is closed, and the sealing of the PCB board packaging is improved. Improve the airtightness of the PCB package to prevent impurities or water vapor from entering the package and contacting the PCB, prevent the PCB from being corroded, and extend the service life of the PCB.

[0007] Optionally, the sealing assembly further includes: Four second telescopic rods, wherein the fixed ends of the four second telescopic rods are evenly and fixedly embedded in the side wall of the positioning and mounting groove; An abutment block, the abutment block is fixedly mounted on the movable end of the second telescopic rod, the abutment block is passed through and slidably mounted on the side wall of the positioning and mounting groove, and one end of the abutment block away from the second telescopic rod abuts against the fixing plate; A second connecting pipe, one end of the second connecting pipe is connected to the rodless cavity of the second telescopic rod, and the other end of the second telescopic rod is connected to the rodless cavity of the first telescopic rod.

[0008] By adopting the above technical solution, after the top cover is pushed to continue to move in the direction close to the base for a preset time, the controller controls the first control valve to close and controls the second control valve to open. After the second control valve is opened, the water in the first telescopic rod flows into the rodless cavity of the second telescopic rod through the second connecting pipe, and the length of the second telescopic rod is extended. The extension of the second telescopic rod further pushes the abutment block to move in the direction close to the fixed plate and abut against the fixed plate, thereby increasing the friction and tightness between the abutment block and the fixed plate, and increasing the airtightness in the positioning groove, thereby preventing water vapor in the positioning groove from entering the enclosed space between the base and the top cover, and at the same time increasing the friction between the abutment block and the fixed plate, thereby fixing the fixed plate.

[0009] Optionally, a first control valve is installed on the first connecting pipe, the first control valve is electrically connected to a controller, and the controller is installed on the base; A second control valve is installed on the second connecting pipe; The second control valve is electrically connected to the controller.

[0010] By adopting the above technical solution, the water in the first telescopic rod first enters the nozzle through the first connecting pipe and is sprayed out, and then enters the second telescopic rod through the second connecting pipe, thereby ensuring the normal operation of the sealing component.

[0011] Optionally, a return spring is sleeved on the first telescopic rod, one end of the return spring is fixedly connected to the fixed end of the first telescopic rod, and the other end of the return spring is fixedly connected to the movable end of the first telescopic rod.

[0012] By adopting the above technical solution, the first telescopic rod is reset, which facilitates the subsequent use of the anti-corrosion PCB packaging structure.

[0013] Optionally, two slide grooves are symmetrically provided on the base; The fixing assembly comprises: Four suction cups, wherein the four suction cup fixed ends are evenly and fixedly embedded on the bottom wall of the positioning and mounting groove, and the suction end of the suction cup is located in the positioning and mounting groove; A third telescopic rod, wherein a fixed end of the third telescopic rod is fixedly embedded in the bottom wall of the slide slot, and a movable end of the third telescopic rod is located in the slide slot; A pressure plate, the pressure plate is fixedly mounted on the movable end of the third telescopic rod, the pressure plate is slidably mounted in the slide groove, and the peripheral side of the pressure plate is tightly fitted with the inner wall of the slide groove; A water filter plate, the water filter plate is fixedly installed in the chute, and the peripheral side of the water filter plate is tightly fitted with the inner wall of the chute; a third water-swellable rubber pad, the third water-swellable rubber pad being fixedly mounted on an end of the pressure plate away from the third telescopic rod, the third water-swellable rubber pad being in contact with the water filter plate, and the peripheral side of the third water-swellable rubber pad being in close contact with the inner wall of the chute; a third connecting pipe, one end of which is connected to the suction cup, the other end of which is connected to the rodless cavity of the third telescopic rod, and a first one-way valve is installed on the third connecting pipe; A fourth connecting pipe is connected to the suction cup, and a second one-way valve is installed on the fourth connecting pipe.

[0014] By adopting the above technical solution, when the top cover moves toward the direction close to the base until the fixing plate abuts against the bottom wall of the positioning and mounting groove, the suction cup abuts against and fits against the fixing plate, and the gas in the suction cup is discharged through the fourth connecting pipe, so that the suction cup and the fixing plate are adsorbed, and the fixing plate and the base are fixed. When water vapor penetrates into the closed space between the base and the top cover, the water vapor penetrates into the third water-absorbing and swelling rubber pad through the water filter plate, and the third water-absorbing and swelling rubber pad expands in volume when it encounters water. After the volume of the third water-absorbing and swelling rubber pad expands, it drives the pressure plate to move toward the direction close to the third telescopic rod and compress the third telescopic rod. The air in the rodless cavity of the third telescopic rod enters the suction end of the suction cup through the third connecting pipe, and the suction cup is separated from the fixing plate, which facilitates the separation of the base and the top cover, and facilitates the user to open the PCB packaging structure and inspect and replace the PCB board.

[0015] Optionally, a distance sensor is fixedly mounted on the bottom wall of the slideway; An alarm is fixedly mounted on the base, and both the distance sensor and the alarm are electrically connected to the controller.

[0016] By adopting the above technical solution, when water vapor enters the enclosed space between the base and the top cover, the water vapor contacts the third water-swellable rubber pad, the volume of the third water-swellable rubber pad increases and pushes the pressure plate to move toward the bottom wall of the slide groove, the distance sensor detects the displacement of the pressure plate, the distance sensor transmits the detection result to the controller, and the controller controls the alarm to sound an alarm, so that users can promptly discover and inspect the enclosed space between the base and the top cover.

[0017] Optionally, a first water-swellable rubber pad is fixedly mounted on one end of the fixing plate away from the top cover.

[0018] By adopting the above technical solution, the gap between the fixing plate and the positioning groove is reduced. At the same time, when the first water-absorbing and swelling rubber pad on the fixing plate meets water, the airtightness in the positioning groove is improved to prevent the water vapor in the positioning groove from entering the enclosed space between the base and the top cover.

[0019] Optionally, a second water-swellable rubber pad is fixedly mounted on one end of the abutment block away from the second telescopic rod.

[0020] By adopting the above technical solution, the airtightness of the positioning groove is improved, and the water vapor in the positioning groove is prevented from entering the enclosed space between the base and the top cover. At the same time, the friction between the abutment block and the fixed plate is improved, which plays a fixing role on the fixed plate.

[0021] Optionally, a first thermally conductive rubber pad is fixedly mounted on the base, and a placement groove is provided on the top of the first thermally conductive rubber pad.

[0022] By adopting the above technical solution, the base conducts heat to the PCB board, thereby improving the heat dissipation efficiency of the base, avoiding excessive temperature of the PCB board that affects the work of the PCB board, and extending the service life of the PCB board.

[0023] Optionally, a second heat-conducting rubber pad is fixedly mounted on the top cover.

[0024] By adopting the above technical solution, the top cover conducts heat to the PCB board, thereby improving the heat dissipation efficiency of the top cover, preventing the PCB board from being overheated and thus affecting the work of the PCB board, and extending the service life of the PCB board.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. When an anti-corrosion PCB packaging structure is used to package a PCB board, the top cover is set on the base. When the top cover is set on the base, the sealing component is driven to work, and the sealing component seals the positioning installation groove. At the same time, the fixing component works, and the fixing component fixes the position of the top cover to improve the connection stability between the top cover and the base. Improve the airtightness of the PCB board package, prevent impurities or water vapor from entering the package and contacting the PCB board, prevent the PCB board from being corroded, and extend the service life of the PCB board; 2. When packaging the PCB board, the top cover is placed on the base, the fixed plate is in contact with the first telescopic rod, the top cover is pushed to move in the direction close to the base, the length of the first telescopic rod is shortened, and the water in the rodless cavity of the first telescopic rod flows into the first connecting pipe. When the pressure value in the first connecting pipe reaches the preset value of the first control valve, the first control valve is opened, and the water in the first connecting pipe flows to the nozzle, and the water is sprayed from the nozzle and sprayed on the water-absorbing and expanding rubber ring. The water-absorbing and expanding rubber ring expands when it encounters water and abuts against the fixed plate, so that the internal space of the positioning installation groove is sealed, the sealing of the PCB board packaging is improved, impurities or water vapor are prevented from entering the packaging and contacting the PCB board, the PCB board is prevented from being corroded, and the service life of the PCB board is extended; 3. When water vapor penetrates into the enclosed space between the base and the top cover, the water vapor penetrates into the third water-absorbing and swelling rubber pad through the water filter plate, and the third water-absorbing and swelling rubber pad expands in volume when it meets water. After the volume of the third water-absorbing and swelling rubber pad expands, it drives the pressure plate to move toward the direction close to the third telescopic rod and compresses the third telescopic rod. The air in the rodless cavity of the third telescopic rod enters the adsorption end of the suction cup through the third connecting pipe, and the suction cup is separated from the fixing plate, which facilitates the separation of the base from the top cover and the user to open the PCB packaging structure and inspect and replace the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the present application easier to understand, the present application is further described in detail below based on the specific embodiments of the present application and in conjunction with the accompanying drawings, wherein: Figure 1It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is a structural exploded diagram of an embodiment of the present application; Figure 3 It is a structural schematic diagram of the base of the embodiment of the present application; Figure 4 It is a schematic diagram of the structure of the top cover of the embodiment of the present application; Figure 5 This is a cross-sectional view of the structure of the sealing assembly used to illustrate the embodiment of the present application; Figure 6 It is a structural cross-sectional view used to illustrate the fixing component in an embodiment of the present application.

[0027] Explanation of the reference numerals in the drawings in the specification: 1. base; 11. positioning and mounting groove; 12. first thermally conductive rubber pad; 13. slide groove; 14. placement groove; 2. top cover; 21. fixing plate; 22. first water-absorbing and swelling rubber pad; 23. second thermally conductive rubber pad; 3. sealing assembly; 31. first telescopic rod; 32. return spring; 33. first connecting pipe; 34. nozzle; 35. water-absorbing and swelling rubber ring; 36. second telescopic rod; 37. abutment block; 38. second connecting pipe; 39. second water-absorbing and swelling rubber pad; 4. fixing assembly; 41. suction cup; 42. third telescopic rod; 43. third connecting pipe; 44. pressure plate; 45. fourth connecting pipe; 46. water filter plate; 47. third water-absorbing and swelling rubber pad; 5. distance sensor; 6. alarm; 7. controller. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] The following will further elaborate on this application Figure 1-6 in conjunction with the accompanying drawings.

[0032] An embodiment of this application discloses an erosion-proof PCB packaging structure.

[0033] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , an erosion-proof PCB packaging structure includes a base 1, a top cover 2, a sealing component 3, and a fixing component 4. A positioning installation groove 11 is formed on the base 1. The positioning installation groove 11 is connected end to end and is in an overall shape of a rectangle with a hole in the middle. A first heat-conducting rubber pad 12 is fixedly installed on the base 1. The positioning installation groove 11 is formed on the periphery of the first heat-conducting rubber pad 12. A placement groove 14 is formed on the top of the first heat-conducting rubber pad 12. Two sliding grooves 13 are symmetrically formed on the base 1 with the first heat-conducting rubber pad 12 as the center. The top cover 2 is covered on the base 1. Four fixing plates 21 are fixedly installed at one end of the top cover 2 close to the base 1. The four fixing plates 21 are fixedly connected end to end in sequence. The fixing plates 21 are embedded in the positioning installation groove 11. The side walls of the fixing plates 21 close to each other are closely attached to the inner wall of the positioning installation groove 11. A first water-absorbing and expanding rubber pad 22 is fixedly installed at one end of the fixing plate 21 away from the top cover 2. A second heat-conducting rubber pad 23 is fixedly installed on the top cover 2. The four fixing plates 21 are fixedly installed on the periphery of the second heat-conducting rubber pad 23. The sealing component 3 is installed on the base 1. The sealing component 3 is used to seal the gap between the base 1 and the top cover 2. The fixing component 4 is installed on the base 1. The fixing component 4 is connected to the top cover 2. The fixing component 4 is used to connect the base 1 and the top cover 2.

[0034] It should be noted that there may be some inaccuracies in the translation of the geometric description part in the original text you provided. For example, "定位安装槽11首尾连通且整体为回字形状" is translated as "The positioning installation groove 11 is connected end to end and is in an overall shape of a rectangle with a hole in the middle", which may not be in line with the exact meaning. It is recommended to check and correct it according to the actual situation.When a PCB board is packaged using an anti-corrosion PCB packaging structure, the PCB board is placed in the placement groove 14, the top cover 2 is placed on the base 1, and the first thermal conductive rubber pad 12 and the second thermal conductive rubber pad 23 are tightly fitted with the PCB board. When the top cover 2 is placed on the base 1, the sealing component 3 is driven to work, and the sealing component 3 seals the positioning installation groove 11. At the same time, the fixing component 4 works, and the fixing component 4 fixes the position of the top cover 2 to improve the connection stability between the top cover 2 and the base 1, thereby improving the sealing of the PCB board packaging, preventing impurities or water vapor from entering the packaging and contacting the PCB board, preventing the PCB board from being corroded, and extending the service life of the PCB board.

[0035] Reference Figure 3 , Figure 5 and Figure 6 The sealing assembly 3 includes four first telescopic rods 31, a nozzle 34, a first connecting pipe 33 and a water-swellable rubber ring 35. The fixed ends of the four first telescopic rods 31 are evenly and fixedly embedded in the bottom wall of the positioning and mounting groove 11, the movable end of the first telescopic rod 31 is located in the positioning and mounting groove 11, the axial direction of the first telescopic rod 31 is perpendicular to the bottom wall of the positioning and mounting groove 11, the movable end of the first telescopic rod 31 abuts against the fixed plate 21, and the rodless cavity of the first telescopic rod 31 is filled with water. A reset spring 32 is sleeved on the first telescopic rod 31, one end of the reset spring 32 is fixedly connected to the fixed end of the first telescopic rod 31, and the other end of the reset spring 32 is fixedly connected to the movable end of the first telescopic rod 31, and the reset spring 32 is always in a compressed state. The nozzle 34 is embedded and fixedly installed on the inner wall of the positioning and mounting groove 11. One end of the first connecting pipe 33 is connected to the nozzle 34, and the other end of the first connecting pipe 33 is connected to the rodless cavity of the first telescopic rod 31. A first control valve is installed on the first connecting pipe 33, and the first control valve is electrically connected to the controller 7, which is installed on the base. The controller 7 can control the opening and closing of the first control valve. The water-swelling rubber ring 35 is wound and fixedly installed in the positioning installation groove 11, and the water-swelling rubber ring 35 abuts against the fixing plate 21. The cross-section of the water-swelling rubber ring 35 is elliptical, and the water-swelling rubber ring 35 is located below the nozzle 34.

[0036] When packaging the PCB board, the top cover 2 is placed on the base 1, the fixed plate 21 is in contact with the first telescopic rod 31, and the user pushes the top cover 2 to move in the direction close to the base 1. The length of the first telescopic rod 31 is shortened, and the water in the rodless cavity of the first telescopic rod 31 flows into the first connecting pipe 33. The controller 7 controls the first control valve to open, and the water in the first connecting pipe 33 flows to the nozzle 34. The water is sprayed out from the nozzle 34 and sprayed on the water-absorbing and swelling rubber ring 35. The water-absorbing and swelling rubber ring 35 expands when it encounters water and abuts against the fixed plate 21, so that the internal space of the positioning and mounting groove 11 is closed, thereby improving the sealing of the PCB board packaging, preventing impurities or water vapor from entering the packaging and contacting the PCB board, preventing the PCB board from being corroded, and extending the service life of the PCB board.

[0037] Reference Figure 3 , Figure 5 and Figure 6 The sealing assembly 3 also includes four second telescopic rods 36, abutment blocks 37 and a second connecting pipe 38. The fixed ends of the four second telescopic rods 36 are evenly and fixedly embedded in the side wall of the positioning and mounting groove 11, and the axial direction of the second telescopic rod 36 is perpendicular to the side wall of the positioning and mounting groove 11. The abutment block 37 is fixedly installed on the movable end of the second telescopic rod 36, and the abutment block 37 is penetrated and slidably installed on the side wall of the positioning and mounting groove 11. The end of the abutment block 37 away from the second telescopic rod 36 abuts against the fixed plate 21, and the end of the abutment block 37 away from the second telescopic rod 36 is fixedly installed with a second water-swelling rubber pad 39, and the abutment block 37 is located below the water-swelling rubber ring 35. One end of the second connecting pipe 38 is connected to the rodless cavity of the second telescopic rod 36, and the other end of the second telescopic rod 36 is connected to the rodless cavity of the first telescopic rod 31. The second connecting pipe 38 is installed with a second control valve. The second control valve is electrically connected to the controller 7, and the controller 7 can control the opening and closing of the second control valve.

[0038] After pushing the top cover 2 to continue moving in the direction close to the base 1 for a preset time, the controller 7 controls the first control valve to close and controls the second control valve to open. After the second control valve is opened, the water in the first telescopic rod 31 flows into the rodless cavity of the second telescopic rod 36 through the second connecting pipe 38, and the length of the second telescopic rod 36 is extended. The extension of the second telescopic rod 36 further pushes the abutment block 37 to move in the direction close to the fixed plate 21 and abut against the fixed plate 21, thereby increasing the friction and fit tightness between the abutment block 37 and the fixed plate 21, and increasing the airtightness in the positioning groove 11, thereby preventing the water vapor in the positioning groove 11 from entering the enclosed space between the base 1 and the top cover 2, and at the same time increasing the friction between the abutment block 37 and the fixed plate 21, thereby fixing the fixed plate 21.

[0039] Reference Figure 3 , Figure 5 and Figure 6The fixing assembly 4 includes four suction cups 41, a third telescopic rod 42, a pressure plate 44, a third connecting pipe 43, a fourth connecting pipe 45, a water filter plate 46 and a third water-swelling rubber pad 47. The fixed ends of the four suction cups 41 are evenly and fixedly embedded in the bottom wall of the positioning and mounting groove 11, the adsorption end of the suction cup 41 is located in the positioning and mounting groove 11, and the adsorption end of the suction cup 41 is located below the fixing plate 21. The fixed end of the third telescopic rod 42 is fixedly embedded in the bottom wall of the slide groove 13, the movable end of the third telescopic rod 42 is located in the slide groove 13, and the axial direction of the third telescopic rod 42 is perpendicular to the bottom wall of the slide groove 13. The pressure plate 44 is fixedly installed on the movable end of the third telescopic rod 42, and the pressure plate 44 is slidably installed in the slide groove 13, and the peripheral side of the pressure plate 44 is tightly fitted with the inner wall of the slide groove 13. The third connecting pipe 43, one end of the third connecting pipe 43 is connected to the suction cup 41, and the other end of the third connecting pipe 43 is connected to the rodless cavity of the third telescopic rod 42. The third connecting pipe 43 is installed with a first one-way valve, and the gas flow direction in the third connecting pipe 43 is from the third telescopic rod 42 to the suction cup 41. The fourth connecting pipe 45 is connected to the suction cup 41, and the fourth connecting pipe 45 is installed with a second one-way valve. The gas flow direction in the fourth connecting pipe 45 is from one end connected to the suction cup 41 to the end away from the suction cup 41. The water filter plate 46 is fixedly installed in the chute 13, and the circumference of the water filter plate 46 is tightly fitted with the inner wall of the chute 13. The third water-swelling rubber pad 47 is fixedly installed on the end of the pressure plate 44 away from the third telescopic rod 42, and the third water-swelling rubber pad 47 abuts against the water filter plate 46, and the circumference of the third water-swelling rubber pad 47 is tightly fitted with the inner wall of the chute 13.

[0040] When the top cover 2 moves toward the direction close to the base 1 until the fixing plate 21 abuts against the bottom wall of the positioning and mounting groove 11, the suction cup 41 abuts against and fits against the fixing plate 21, and the gas in the suction cup 41 is discharged through the fourth connecting pipe 45, so that the suction cup 41 and the fixing plate 21 are adsorbed, and the fixing plate 21 is fixed to the base 1. When water vapor penetrates into the closed space between the base 1 and the top cover 2, the water vapor penetrates into the third water-absorbing and swelling rubber pad 47 through the water filter plate 46, and the third water-absorbing and swelling rubber pad 47 expands in volume when it encounters water. After the volume expansion of the third water-absorbing and swelling rubber pad 47, it drives the pressure plate 44 to move toward the direction close to the third telescopic rod 42 and compress the third telescopic rod 42, and the air in the rodless cavity of the third telescopic rod 42 enters the adsorption end of the suction cup 41 through the third connecting pipe 43, and the suction cup 41 is separated from the fixing plate 21, which facilitates the separation of the base 1 and the top cover 2, and facilitates the user to open the PCB packaging structure and inspect and replace the PCB board.

[0041] Reference Figure 2 and Figure 5 A distance sensor 5 is fixedly installed on the bottom wall of the slide groove 13 , an alarm 6 and a controller 7 are fixedly installed on the base 1 , and the distance sensor 5 and the alarm 6 are both electrically connected to the controller 7 .

[0042] When water vapor enters the enclosed space between the base 1 and the top cover 2, the water vapor comes into contact with the third water-swellable rubber pad 47, the volume of the third water-swellable rubber pad 47 increases and pushes the pressure plate 44 to move toward the bottom wall of the slide groove 13, and the distance sensor 5 detects the displacement of the pressure plate 44. The distance sensor 5 transmits the detection result to the controller 7, and the controller 7 controls the alarm 6 to sound an alarm, so that the user can find and check the enclosed space between the base 1 and the top cover 2 in time.

[0043] The implementation principle of the anti-corrosion PCB packaging structure of the embodiment of the present application is as follows: when packaging the PCB board, place the PCB board in the placement groove 14, set the top cover 2 on the base 1, and the first thermal conductive rubber pad 12 and the second thermal conductive rubber pad 23 are tightly fitted with the PCB board. When the top cover 2 is set on the base 1, the sealing component 3 is driven to work, and the sealing component 3 seals the positioning installation groove 11. At the same time, the fixing component 4 works, and the fixing component 4 fixes the position of the top cover 2 to improve the connection stability between the top cover 2 and the base 1. Improve the airtightness of the PCB board packaging, prevent impurities or water vapor from entering the packaging and contacting the PCB board, prevent the PCB board from being corroded, and extend the service life of the PCB board.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-corrosion PCB packaging structure, characterized in that: Including: A base (1) is provided with a positioning and installation groove (11) on it. The positioning and installation groove (11) is connected end to end and is in an overall shape of a square frame. A top cover (2) is covered on the base (1). Four fixing plates (21) are fixedly installed at one end of the top cover (2) close to the base (1). The four fixing plates (21) are fixedly connected end to end in sequence. The fixing plates (21) are embedded in the positioning and installation groove (11). A sealing assembly (3) is installed on the base (1). The sealing assembly (3) is used to seal the gap between the base (1) and the top cover (2). A fixing assembly (4) is installed on the base (1). The fixing assembly (4) is connected to the top cover (2). The fixing assembly (4) is used to connect the base (1) and the top cover (2). Wherein, the sealing assembly (3) includes: Four first telescopic rods (31). The fixed ends of the four first telescopic rods (31) are evenly and fixedly embedded in the bottom wall of the positioning and installation groove (11). The movable ends of the first telescopic rods (31) are located in the positioning and installation groove (11). The movable ends of the first telescopic rods (31) are in contact with the fixing plates (21). A spray head (34) is embedded and fixedly installed on the inner wall of the positioning and installation groove (11). A first connecting pipe (33). One end of the first connecting pipe (33) is communicated with the spray head (34), and the other end of the first connecting pipe (33) is communicated with the rodless cavity of the first telescopic rod (31). A water-absorbing and swelling rubber ring (35) is wound and fixedly installed in the positioning and installation groove (11). The water-absorbing and swelling rubber ring (35) is in contact with the fixing plates (21).

2. The anti-corrosion PCB packaging structure according to claim 1, characterized in that: The sealing assembly (3) further includes: Four second telescopic rods (36). The fixed ends of the four second telescopic rods (36) are evenly and fixedly embedded in the side wall of the positioning and installation groove (11). A butting block (37) is fixedly installed on the movable end of the second telescopic rod (36). The butting block (37) passes through and is slidably installed on the side wall of the positioning and installation groove (11). The end of the butting block (37) away from the second telescopic rod (36) is in contact with the fixing plates (21). A second connecting pipe (38). One end of the second connecting pipe (38) is communicated with the rodless cavity of the second telescopic rod (36), and the other end of the second telescopic rod (36) is communicated with the rodless cavity of the first telescopic rod (31).

3. The anti-corrosion PCB packaging structure according to claim 2, characterized in that: A first control valve is installed on the first connecting pipe (33). The first control valve is electrically connected to a controller (7). The controller (7) is installed on the base (1). A second control valve is installed on the second connecting pipe (38). The second control valve is electrically connected to the controller (7).

4. The anti-corrosion PCB packaging structure according to claim 1, characterized in that: A return spring (32) is sleeved on the first telescopic rod (31), one end of the return spring (32) is fixedly connected to the fixed end of the first telescopic rod (31), and the other end of the return spring (32) is fixedly connected to the movable end of the first telescopic rod (31).

5. The anti-corrosion PCB packaging structure according to claim 3, characterized in that: The base (1) is symmetrically provided with two slide grooves (13); The fixing component (4) comprises: Four suction cups (41), the fixed ends of the four suction cups (41) being evenly and fixedly embedded on the bottom wall of the positioning and mounting groove (11), and the adsorption ends of the suction cups (41) being located in the positioning and mounting groove (11); a third telescopic rod (42), wherein a fixed end of the third telescopic rod (42) is fixedly embedded in the bottom wall of the slide groove (13), and a movable end of the third telescopic rod (42) is located in the slide groove (13); a pressure plate (44), the pressure plate (44) being fixedly mounted on the movable end of the third telescopic rod (42), the pressure plate (44) being slidably mounted in the slide groove (13), and the circumference of the pressure plate (44) being tightly fitted to the inner wall of the slide groove (13); a water filter plate (46), the water filter plate (46) being fixedly mounted in the chute (13), the peripheral side of the water filter plate (46) being in close contact with the inner wall of the chute (13); a third water-swellable rubber pad (47), the third water-swellable rubber pad (47) being fixedly mounted on an end of the pressure plate (44) away from the third telescopic rod (42), the third water-swellable rubber pad (47) being in contact with the water filter plate (46), and the peripheral side of the third water-swellable rubber pad (47) being in close contact with the inner wall of the slide groove (13); a third connecting pipe (43), one end of the third connecting pipe (43) being connected to the suction cup (41), the other end of the third connecting pipe (43) being connected to the rodless cavity of the third telescopic rod (42), and a first one-way valve being installed on the third connecting pipe (43); A fourth connecting pipe (45), the fourth connecting pipe (45) being connected to the suction cup (41), and a second one-way valve being installed on the fourth connecting pipe (45).

6. The anti-corrosion PCB packaging structure according to claim 5, characterized in that: A distance sensor (5) is fixedly mounted on the bottom wall of the slide groove (13); An alarm (6) is fixedly mounted on the base (1), and both the distance sensor (5) and the alarm (6) are electrically connected to the controller (7).

7. The anti-corrosion PCB packaging structure according to claim 1, characterized in that: A first water-swellable rubber pad (22) is fixedly mounted on one end of the fixing plate (21) away from the top cover (2).

8. The anti-corrosion PCB packaging structure according to claim 2, characterized in that: A second water-swellable rubber pad (39) is fixedly mounted on one end of the abutment block (37) away from the second telescopic rod (36).

9. The anti-corrosion PCB packaging structure according to claim 1, characterized in that: A first heat-conducting rubber pad (12) is fixedly mounted on the base (1), and a placement groove (14) is provided on the top of the first heat-conducting rubber pad (12).

10. The anti-corrosion PCB packaging structure according to claim 1, characterized in that: A second heat-conducting rubber pad (23) is fixedly mounted on the top cover (2).

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