A vehicle-mounted sensor PCBA waterproof device and vehicle-mounted sensor

Abstract

The present invention discloses a vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor, comprising a PCBA board and a protective frame. The outer wall of the PCBA board is fixedly connected to a humidity sensor, the inner wall of the PCBA board is fixedly connected to a pop-up box, the inner wall of the pop-up box is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a gear, the inner wall of the pop-up box is fixedly connected to a base, the outer wall of the base is slidably connected to a slide, the rack of the gear engages with the rack of the slide, the inner wall of the slide is slidably connected to an elastic block, the outer wall of the elastic block and the outer wall of the slide are fixedly connected to a spring, the outer wall of the elastic block is fixedly connected to a limiting column, the outer wall of the limiting column is fixedly connected to a limiting block, the outer wall of the limiting column is slidably connected to the inner wall of the slide, the outer wall of the base is fixedly connected to a bracket, and the outer wall of the bracket is rotatably connected to a power storage plate. The humidity sensor sends a signal to activate the motor to eject the battery, thereby preventing damage to the sensor.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle-mounted sensors, and in particular relates to a vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor. Background Art

[0002] Automotive sensors serve as input devices for the car's computer system. They convert various operating conditions, such as vehicle speed, media temperatures, and engine operating conditions, into electrical signals and transmit them to the computer, ensuring optimal engine operation. The most important electronic component in automotive sensors is the printed circuit board (PCBA), which supports the electronic components and is manufactured using electronic printing technology. Because electronic components are electrically connected, waterproof performance is particularly important.

[0003] However, the conventional device still has the following problems when used:

[0004] 1. After the vehicle-mounted sensor has been flooded, the PCBA board inside the sensor is full of electronic components. Water is conductive and some liquids are corrosive. Continued conductivity will cause the electronic components on the PCBA board to short-circuit and cause secondary damage.

[0005] 2. Conventional waterproof devices generally add sealing rings at the interfaces. Under normal circumstances, the sealing rings have a certain waterproof effect. However, when the vehicle-mounted sensor is subjected to a severe impact, if the structure of the sensor is damaged, the sealing performance of the sealing ring will definitely be affected, which will cause the vehicle-mounted sensor to be non-waterproof.

[0006] 3. Since the PCBA board inside the vehicle sensor is densely populated with electronic components, it is necessary to consider shockproofing while considering waterproofing to protect the PCBA board. Otherwise, even if the water does not damage the PCBA board, it may be damaged by vibration. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor, which have the advantages of being waterproof and shockproof.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor, comprising a PCBA board and a protective frame, the outer wall of the PCBA board is fixedly connected to a humidity sensor, the inner wall of the PCBA board is fixedly connected to a pop-up box, the inner wall of the pop-up box is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a gear, the inner wall of the pop-up box is fixedly connected to a base, the outer wall of the base is slidably connected to a slide, the rack of the gear is engaged with the rack of the slide, the inner wall of the slide is slidably connected to a spring block, a spring is fixedly connected between the outer wall of the spring block and the outer wall of the slide, the outer wall of the spring block is fixedly connected to a limiting column, the outer wall of the limiting column is fixedly connected to a limiting block, the outer wall of the limiting column is slidably connected to the inner wall of the slide, the outer wall of the base is fixedly connected to a bracket, and the outer wall of the bracket is rotatably connected to a power storage plate.

[0009] The above technical solution can eject the battery to prevent the battery from continuing to charge and discharge and causing secondary damage to the PCBA board. The humidity sensor senses water intrusion or excessive humidity, and the humidity sensor will send a signal to start the motor. The rotation of the motor drives the gear to rotate, and the gear drives the slide to move downward. The spring between the spring and the slide is compressed and force is accumulated due to the obstruction of the force storage plate. When the force storage plate contacts the raised position of the slide end, the force storage plate is pushed up, the spring is released, and the spring is ejected under the action of the spring, and the battery under the spring is ejected, preventing the battery from continuing to work and protecting the electronic components on the PCBA board.

[0010] Preferably, the bottom of the pop-up box is fixedly connected to a battery mounting plate, the inner wall of the battery mounting plate is fixedly connected to a limiting ring, the inner wall of the battery mounting plate is slidably connected to a push column, there are multiple push columns, and the bottom of the push column is fixedly connected to spring 2.

[0011] The above technical solution facilitates the installation, fixing and ejection of the battery. By pressing the battery onto the pressing post, the pressing post is squeezed into the battery mounting plate under the external force of the battery. After the battery is installed in place, the pressing post is reset under the action of the second spring, and the battery is clamped and fixed between the limiting ring and the pressing post. When the spring block pops out, the battery will be ejected under the external force of the spring block.

[0012] Preferably, an upper cover and a lower cover are respectively provided above and below the PCBA board, the inner walls of the upper cover and the lower cover are threadedly connected with bolts, the number of the bolts is eight, the outer wall of the bolt is slidably connected with a washer, the outer wall of the bolt is fixedly connected with a knob, the end of the bolt away from the knob is rotatably connected with a connecting column, the outer wall of the connecting column is fixedly connected with an L-shaped plate, the outer wall of the L-shaped plate is fixedly connected with a spring three, and the number of the spring three is multiple.

[0013] The above technical solution protects the PCBA from damage caused by vibration. The connecting post on the lower cover is provided with a groove, which fits perfectly with the connecting post on the upper cover. The connecting post is inserted through the circular hole on the PCBA to secure the PCBA. When the knob is tightened, the PCBA is located in this inner cavity. The gasket under the knob makes the inner cavity more waterproof. A spring is fixed to the L-shaped plate on each connecting post. When the connecting post is locked, the L-shaped plate will form an elastic clamp on the PCBA, so that the PCBA will have a certain buffering effect when the PCBA is subjected to vibration and will not be damaged.

[0014] Preferably, a fillet is fixedly connected to the outer wall of the lower cover, and a fillet groove is provided on the outer wall of the upper cover.

[0015] The above technical solution can seal the vehicle-mounted sensor, and the molding strip on the lower cover can be completely embedded in the caulking on the upper cover, so that a closed inner cavity is formed between the upper cover and the lower cover.

[0016] Preferably, an airbag is fixedly connected to the inner wall of the protection frame, and the number of the airbags is two. A through tube is fixedly connected between the two airbags, and the number of the through tubes is four.

[0017] Through the above technical solution, the upper and lower positions of the sensor are protected. The airbags above and below the sensor provide upper and lower protection for the sensor. When the sensor is subjected to up and down vibrations, because the upper and lower airbags are connected by a through tube, the upper and lower airbags have better elasticity and stronger protection.

[0018] Preferably, outer walls of the upper cover and the lower cover are fixedly connected with magnetic blocks, the number of the magnetic blocks is four, and electromagnets are provided on both sides of the upper cover.

[0019] Through the above technical solution, the function of fixing the vehicle-mounted sensor is activated, the sensor is placed in the protective frame, and the electromagnet is energized. Due to the magnetic force between the magnetic block on the sensor and the electromagnet, the sensor is fixed.

[0020] Preferably, the inner wall of the electromagnet is hinged with an adjusting rod, and the number of the adjusting rods is two. The outer wall of the adjusting rod is hinged with a slider, and the outer wall of the slider is fixedly connected to a spring four, and the end of the spring four away from the slider is fixedly connected to a fixed block, and a limiting rod is fixedly connected between the two fixed blocks, and the two ends of the limiting rod are fixedly connected to the inner wall of the protective frame.

[0021] The above technical solution can protect the vehicle-mounted sensor from being damaged by vibration in the front, back, left and right directions. When the sensor is vibrated, the adjustment rod on the electromagnet will rotate, causing the spring four on the adjustment rod to change elastically, thereby providing a certain buffering effect for the vibration and avoiding the impact of vibration.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the humidity sensor senses water in the inner cavity or the humidity is too high, it will send a signal to start the motor and eject the battery on the PCBA board to prevent secondary damage to the electronic components on the PCBA board caused by battery charging and discharging.

[0024] 2. The PCBA board is clamped by the L-shaped plate on the connecting column. Due to the spring three fixedly connected to the L-shaped plate, the PCBA board has a certain buffering effect under the protection of the spring three when it is vibrated, and will not be damaged by the vibration.

[0025] 3. The airbags above and below the vehicle-mounted sensor protect the sensor from top to bottom. The adjustment rod and spring on the electromagnet protect the sensor from front to back and left to right, so that the sensor will not be damaged when it is vibrated in any direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the internal structure of the vehicle-mounted sensor of the present invention;

[0027] Figure 2 This is a schematic structural diagram of location A of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the PCBA board of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the pop-up box of the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the battery mounting plate of the present invention;

[0031] Figure 6 This is a schematic diagram of the protective frame structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the protection frame of the present invention;

[0033] Figure 8 It is a schematic diagram of the anti-vibration structure of the vehicle-mounted sensor of the present invention.

[0034] In the figure: 1. PCBA board; 2. Protection frame; 3. Humidity sensor; 4. Pop-up box; 5. Motor; 6. Gear; 7. Base; 8. Slide; 9. Spring block; 10. Spring 1; 11. Limit column; 12. Limit block; 13. Bracket; 14. Power storage plate; 15. Battery mounting plate; 16. Limit ring; 17. Press column; 18. Spring 2; 19. Upper cover; 20. Lower cover; 21. Bolt; 22. Washer; 23. Knob; 24. Connecting column; 25. L-shaped plate; 26. Spring 3; 27. Molding strip; 28. Airbag; 29. ​​Through pipe; 30. Magnet; 31. Electromagnet; 32. Adjustment rod; 33. Slider; 34. Spring 4; 35. Fixing block; 36. Limit rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-8 The present invention provides a technical solution: a vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor, comprising a PCBA board 1 and a protective frame 2, the outer wall of the PCBA board 1 is fixedly connected to a humidity sensor 3, the inner wall of the PCBA board 1 is fixedly connected to a pop-up box 4, the inner wall of the pop-up box 4 is fixedly connected to a motor 5, the output shaft of the motor 5 is fixedly connected to a gear 6, the inner wall of the pop-up box 4 is fixedly connected to a base 7, the outer wall of the base 7 is slidably connected to a slide 8, the rack of the gear 6 is engaged with the rack of the slide 8, the inner wall of the slide 8 is slidably connected to a spring block 9, the outer wall of the spring block 9 and the outer wall of the slide 8 are fixedly connected with a spring 10, the outer wall of the spring block 9 is fixedly connected to a limiting column 11, the outer wall of the limiting column 11 is fixedly connected to a limiting block 12, the outer wall of the limiting column 11 is slidably connected to the inner wall of the slide 8, the outer wall of the base 7 is fixedly connected to a bracket 13, and the outer wall of the bracket 13 is rotatably connected to a power storage plate 14.

[0037] In this embodiment, when the humidity sensor 3 senses water intrusion or excessive humidity, the humidity sensor 3 will send a signal to start the motor 5. The rotation of the motor 5 drives the gear 6 to rotate, and the gear 6 drives the slide 8 to move downward. The spring 10 between the spring 9 and the slide 8 is compressed and stored due to the obstruction of the force storage plate 14. When the force storage plate 14 contacts the raised position of the end of the slide 8, the force storage plate 14 is pushed up, and the spring 10 is released. The spring 9 is ejected under the action of the spring 10, and the battery under the spring 9 is ejected, preventing the battery from continuing to work and protecting the electronic components on the PCBA board 1.

[0038] Specifically, the bottom of the pop-up box 4 is fixedly connected to a battery mounting plate 15, the inner wall of the battery mounting plate 15 is fixedly connected to a limiting ring 16, the inner wall of the battery mounting plate 15 is slidably connected to a press column 17, there are multiple press columns 17, and the bottom of the press column 17 is fixedly connected to a spring 2 18.

[0039] In this embodiment, by pressing the battery onto the pressing post 17, the pressing post 17 is squeezed into the battery mounting plate 15 under the external force of the battery. After the battery is installed in place, the pressing post 17 is reset under the action of the spring 2 18, and the battery is clamped and fixed between the limiting ring 16 and the pressing post 17. When the spring block 9 pops out, the battery will be popped out under the external force of the spring block 9.

[0040] Specifically, an upper cover 19 and a lower cover 20 are respectively provided above and below the PCBA board 1. The inner walls of the upper cover 19 and the lower cover 20 are threadedly connected with bolts 21. There are eight bolts 21. The outer wall of the bolt 21 is slidably connected with a washer 22. The outer wall of the bolt 21 is fixedly connected with a knob 23. The end of the bolt 21 away from the knob 23 is rotatably connected with a connecting column 24. The outer wall of the connecting column 24 is fixedly connected with an L-shaped plate 25. The outer wall of the L-shaped plate 25 is fixedly connected with a spring three 26. There are multiple springs three 26.

[0041] In this embodiment, the connecting posts 24 on the lower cover 20 are provided with grooves that fit snugly with the connecting posts 24 on the upper cover 19. The connecting posts 24 engage through the circular holes in the PCBA board 1 to secure the PCBA board 1. When the knob 23 is tightened, the PCBA board 1 is located within this inner cavity. The gasket 22 below the knob 23 ensures that this inner cavity is more waterproof. A spring 26 is fixed to the L-shaped plate 25 on each connecting post 24. When the connecting post 24 is engaged, the L-shaped plate 25 will elastically clamp the PCBA board 1, providing a certain cushioning effect to prevent damage to the PCBA board 1 when subjected to vibration.

[0042] Specifically, a fillet 27 is fixedly connected to the outer wall of the lower cover 20 , and a fillet groove is formed on the outer wall of the upper cover 19 .

[0043] In this embodiment, the fillet 27 on the lower cover 20 can be completely embedded in the fillet on the upper cover 19 , so that a closed inner cavity is formed between the upper cover 19 and the lower cover 20 .

[0044] Specifically, the inner wall of the protection frame 2 is fixedly connected with air bags 28 , and there are two air bags 28 . A through pipe 29 is fixedly connected between the two air bags 28 , and there are four through pipes 29 .

[0045] In this embodiment, the airbags 28 above and below the sensor provide vertical protection for the sensor. When the sensor is subjected to vertical vibrations, the upper and lower airbags 28 are connected by the through tube 29, so the upper and lower airbags 28 have better elasticity and stronger protection.

[0046] Specifically, outer walls of the upper cover 19 and the lower cover 20 are fixedly connected with magnetic blocks 30 , and there are four magnetic blocks 30 . Electromagnets 31 are provided on both sides of the upper cover 19 .

[0047] In this embodiment, the sensor is placed in the protection frame 2 and the electromagnet 31 is energized. The sensor is fixed due to the magnetic force between the magnetic block 30 on the sensor and the electromagnet 31 .

[0048] Specifically, the inner wall of the electromagnet 31 is hinged with an adjusting rod 32, and there are two adjusting rods 32. The outer wall of the adjusting rod 32 is hinged with a slider 33. The outer wall of the slider 33 is fixedly connected with a spring four 34. The end of the spring four 34 away from the slider 33 is fixedly connected with a fixed block 35. A limiting rod 36 is fixedly connected between the two fixed blocks 35. The two ends of the limiting rod 36 are fixedly connected to the inner wall of the protective frame 2.

[0049] In this embodiment, when the sensor is vibrated, the adjustment rod 32 on the electromagnet 31 rotates, causing the spring 434 on the adjustment rod 32 to change elastically, thereby providing a certain buffering effect for the vibration and avoiding the impact of the vibration.

[0050] The working principle and usage process of the present invention are as follows: when in use, the connecting column 24 on the lower cover 20 is provided with a groove, which is just engaged with the connecting column 24 on the upper cover 19. The connecting column 24 is engaged through the circular hole on the PCBA board 1 to fix the PCBA board 1. The knob 23 is tightened to make the molding 27 on the lower cover 20 completely embedded in the caulking on the upper cover 19, so that a closed inner cavity is formed between the upper cover 19 and the lower cover 20. The PCBA board 1 is located in this inner cavity. The gasket 22 under the knob 23 makes the waterproofness of this inner cavity more rigorous. A spring 26 is fixed on the L-shaped plate 25 on each connecting column 24. When the connecting column 24 is engaged, the L-shaped plate 25 will form an elastic clamp on the PCBA board 1, so that the PCBA board 1 has a certain buffering effect when it is subjected to vibration and will not be damaged. When water enters the inner cavity or the humidity is too high, the humidity sensor 3 will send a signal to start the motor 5, and the motor 5 will rotate. The gear 6 is driven to rotate, and the gear 6 drives the slide 8 to move downward. The spring 10 between the spring block 9 and the slide 8 is compressed and stored due to the obstruction of the force storage plate 14. When the force storage plate 14 contacts the raised position of the end of the slide 8, the force storage plate 14 is pushed up, and the spring 10 is released. The spring block 9 is ejected under the action of the spring 10, and the battery under the spring block 9 is ejected, preventing the battery from continuing to work, protecting the electronic components on the PCBA board 1. After the upper cover 19 and the lower cover 20 are closed, the sensor is placed in the protective frame 2, and the electromagnet 31 is energized. The sensor is fixed by the magnetic force between the magnetic block 30 and the electromagnet 31. The airbags 28 above and below the sensor protect the sensor up and down. The adjusting rod 32 and spring four 34 on the electromagnet 31 protect the sensor front, back, left and right, so that the sensor will not be damaged when it is subjected to vibration in any direction.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted sensor PCBA waterproof device and a vehicle-mounted sensor, comprising a PCBA board (1) and a protective frame (2), characterized in that: The outer wall of the PCBA board (1) is fixedly connected to a humidity sensor (3), the inner wall of the PCBA board (1) is fixedly connected to a pop-up box (4), the inner wall of the pop-up box (4) is fixedly connected to a motor (5), the output shaft of the motor (5) is fixedly connected to a gear (6), the inner wall of the pop-up box (4) is fixedly connected to a base (7), the outer wall of the base (7) is slidably connected to a slide (8), the rack of the gear (6) is meshed with the rack of the slide (8), and the slide (8) The inner wall of the base (7) is slidably connected to a spring block (9), the outer wall of the spring block (9) and the outer wall of the slide seat (8) are fixedly connected to a spring 1 (10), the outer wall of the spring block (9) is fixedly connected to a limiting column (11), the outer wall of the limiting column (11) is fixedly connected to a limiting block (12), the outer wall of the limiting column (11) is slidably connected to the inner wall of the slide seat (8), the outer wall of the base (7) is fixedly connected to a bracket (13), and the outer wall of the bracket (13) is rotatably connected to a power storage plate (14); The bottom of the pop-up box (4) is fixedly connected to a battery mounting plate (15), the inner wall of the battery mounting plate (15) is fixedly connected to a limiting ring (16), the inner wall of the battery mounting plate (15) is slidably connected to a pressing column (17), the number of the pressing columns (17) is multiple, and the bottom of the pressing column (17) is fixedly connected to a second spring (18).

2. The vehicle-mounted sensor PCBA waterproof device and vehicle-mounted sensor according to claim 1, characterized in that: An upper cover (19) and a lower cover (20) are respectively provided above and below the PCBA board (1), the inner walls of the upper cover (19) and the lower cover (20) are both threadedly connected with bolts (21), the number of the bolts (21) is eight, the outer wall of the bolt (21) is slidably connected with a washer (22), the outer wall of the bolt (21) is fixedly connected with a knob (23), the end of the bolt (21) away from the knob (23) is rotatably connected with a connecting column (24), the outer wall of the connecting column (24) is fixedly connected with an L-shaped plate (25), the outer wall of the L-shaped plate (25) is fixedly connected with a spring three (26), and the number of the spring three (26) is multiple.

3. The vehicle-mounted sensor PCBA waterproof device and vehicle-mounted sensor according to claim 2, characterized in that: The outer wall of the lower cover (20) is fixedly connected with a fillet (27), and the outer wall of the upper cover (19) is provided with a fillet groove.

4. The vehicle-mounted sensor PCBA waterproof device and vehicle-mounted sensor according to claim 1, characterized in that: An air bag (28) is fixedly connected to the inner wall of the protection frame (2), and the number of the air bags (28) is two. A through pipe (29) is fixedly connected between the two air bags (28), and the number of the through pipes (29) is four.

5. The vehicle-mounted sensor PCBA waterproof device and vehicle-mounted sensor according to claim 2, characterized in that: The outer walls of the upper cover (19) and the lower cover (20) are both fixedly connected with magnetic blocks (30), the number of the magnetic blocks (30) is four, and electromagnets (31) are provided on both sides of the upper cover (19).

6. The vehicle-mounted sensor PCBA waterproof device and the vehicle-mounted sensor according to claim 5, characterized in that: An adjusting rod (32) is hingedly connected to the inner wall of the electromagnet (31), and the number of the adjusting rods (32) is two. A slider (33) is hingedly connected to the outer wall of the adjusting rod (32), and a spring (34) is fixedly connected to the outer wall of the slider (33). An end of the spring (34) away from the slider (33) is fixedly connected to a fixed block (35). A limiting rod (36) is fixedly connected between the two fixed blocks (35), and both ends of the limiting rod (36) are fixedly connected to the inner wall of the protection frame (2).

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