Quick detection module for electric leakage of PCB (Printed Circuit Board)

Abstract

The utility model belongs to the technical field of PCB detection equipment, and particularly relates to a PCB electric leakage fast detection module which comprises a bottom plate, a supporting plate is fixed to one side of the upper end of the bottom plate, fixing columns are fixed to the two ends of the supporting plate, a bearing plate is fixed to the upper ends of the fixing columns, and a supporting plate is fixed to one side of the bearing plate. A thermal imager is fixed to the lower end of the supporting plate, a lifting mechanism is assembled between the supporting plate and the bearing plate, a moving mechanism is assembled at the upper end of the lifting mechanism, a moving plate is arranged at the lower end of the moving mechanism, a first groove is formed in the end, away from the bearing plate, of the moving plate, and an air blowing pump is arranged at the upper end of the moving plate. According to the device, a clear thermal image can be more quickly presented on the cleaned PCB in thermal imaging detection, so that a detector can more quickly find an area where electric leakage possibly exists, the detection time is shortened, the workload is reduced, and the electric leakage detection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of PCB circuit board testing equipment, specifically relating to a PCB circuit board leakage current fast detection module. Background Technology

[0002] Currently, when there is leakage in a PCB circuit board, thermal imaging is usually used to quickly detect it. The current passing through the leakage point will generate heat, causing the temperature of that part to rise. The thermal imager can capture the temperature distribution of the circuit board after it is powered on, and the location of the leakage can be determined by analyzing the abnormal temperature areas.

[0003] However, flux is used in the PCB manufacturing process. If residue remains after soldering, this flux may react chemically and generate heat when the circuit board is in operation. When using thermal imaging detection, temperature changes in areas with flux residue may be misinterpreted as heat generated by leakage, thus interfering with the determination of the true leakage location and leading to inaccurate detection results. Secondly, dust and other impurities adhering to the PCB board form a heat insulation layer, affecting the PCB board's heat dissipation performance. If leakage heat is present on the PCB board, the heat may not dissipate in time due to the presence of the heat insulation layer, resulting in inconspicuous temperature changes during thermal imaging detection and difficulty in accurately identifying the leakage location. Based on the above problems, this application proposes a PCB circuit board leakage fast detection module to improve these issues. Utility Model Content

[0004] The purpose of this invention is to provide a PCB circuit board leakage detection module that can quickly present a clear thermal image of the cleaned PCB board during thermal imaging inspection, making it easier for inspectors to find areas where leakage problems may exist, reducing inspection time and workload, and improving leakage detection efficiency.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A PCB circuit board leakage current fast detection module includes a base plate, a support plate fixed to one side of the upper end of the base plate, fixing posts fixed to both ends of the support plate, a load-bearing plate fixed to the upper end of the fixing posts, a support plate fixed to one side of the load-bearing plate, a thermal imager fixed to the lower end of the support plate, a lifting mechanism assembled between the support plate and the load-bearing plate, a moving mechanism assembled to the upper end of the lifting mechanism, a moving plate provided to the lower end of the moving mechanism, a first groove formed at the end of the moving plate away from the load-bearing plate, an air pump provided to the upper end of the moving plate, the output end of the air pump extending through the moving plate into the first groove, a nozzle fixed to the output end of the air pump, and a fixing mechanism assembled to the upper end of the base plate.

[0007] In a preferred embodiment, the lower end of the movable plate is provided with bristles, which are evenly arranged and made of a flexible material.

[0008] In a preferred embodiment, the lifting mechanism includes a first motor, a first threaded rod, and a U-shaped rod. The first motor is fixed to the upper end of the load-bearing plate, the first threaded rod is fixed to the output end of the first motor, and the first threaded rod extends through the load-bearing plate to the interior of the support plate. The U-shaped rod is rotatably connected to the outside of the first threaded rod, and the U-shaped rod is slidably connected to the fixed column.

[0009] In a preferred embodiment, the moving mechanism includes a fixed plate, a second motor, a second threaded rod, and a moving seat. The fixed plate is fixed to the outer side of the U-shaped rod near the end of the first threaded rod. The second motor is fixed to the upper end of the fixed plate. The second threaded rod is fixed to the output end of the second motor. The moving seat is fixed to the upper end of the moving plate, and the moving seat and the second threaded rod are rotatably connected.

[0010] In a preferred embodiment, the fixing mechanism includes a first clamping plate, a fixing block, a third threaded rod, and a handwheel. The first clamping plate is slidably connected to the upper end of the base plate, the fixing block is fixed to one end of the base plate, the third threaded rod extends through the fixing block into the interior of the first clamping plate, and the third threaded rod and the fixing block are rotatably connected. The handwheel is fixed to the end of the third threaded rod away from the first clamping plate.

[0011] In a preferred embodiment, the handwheel is fitted with an anti-slip rubber sleeve on its outer side, and the outer side of the anti-slip rubber sleeve is evenly provided with a plurality of anti-slip textures.

[0012] In a preferred embodiment, a second clamping plate is fixed to the end of the base plate away from the first clamping plate, and a second groove is provided on the side of the second clamping plate and the side of the first clamping plate that are close to each other.

[0013] In a preferred embodiment, T-shaped grooves are provided on both sides of the upper end of the base plate and the lower end of the first clamping plate, and sliders are fixed on both sides of the lower end of the first clamping plate, and the sliders are adapted to the T-shaped grooves.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This utility model uses a second motor to drive a second threaded rod to rotate, which in turn moves the movable seat and the movable plate. The movable plate is equipped with an air pump and a nozzle to blow away dust, flux residue and other impurities on the PCB. The lifting mechanism can adjust the distance between the movable plate and the PCB to ensure that the movable plate maintains a suitable distance from PCBs of various sizes, so that it can be used with PCBs of different models and for different purposes.

[0016] This utility model uses a handwheel to rotate a third threaded rod, which in turn pushes the first clamping plate to move while the second clamping plate remains stationary. The PCB board can be fixed between the first and second clamping plates, preventing the PCB board from moving when cleaning it. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the overall structure of this utility model;

[0019] Figure 3 This is a structural diagram of the fixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the movable plate structure of this utility model;

[0021] Figure 5 This is a structural diagram of the lifting mechanism of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 10. Base plate; 11. Support plate; 12. Fixed column; 13. Load-bearing plate; 14. Support plate; 15. Thermal imager; 16. Lifting mechanism; 17. First motor; 18. First threaded rod; 19. U-shaped rod; 20. Moving mechanism; 21. Fixed plate; 22. Second motor; 23. Second threaded rod; 24. Moving seat; 26. Moving plate; 27. Air pump; 28. Nozzle; 29. ​​Brush bristles; 30. Fixed mechanism; 31. First clamping plate; 32. Fixed block; 33. Third threaded rod; 34. Handwheel; 35. Second clamping plate; 36. Slider. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] Please see the appendix Figures 1 to 4 As shown, this utility model provides a PCB circuit board leakage current fast detection module, including a base plate 10, a support plate 11 fixed to one side of the upper end of the base plate 10, fixing posts 12 fixed to both ends of the support plate 11, a load-bearing plate 13 fixed to the upper end of the fixing posts 12, a support plate 14 fixed to one side of the load-bearing plate 13, a thermal imager 15 fixed to the lower end of the support plate 14, a lifting mechanism 16 assembled between the support plate 11 and the load-bearing plate 13, a moving mechanism 20 assembled to the upper end of the lifting mechanism 16, a moving plate 26 provided to the lower end of the moving mechanism 20, a first groove provided at the end of the moving plate 26 away from the load-bearing plate 13, an air pump 27 provided to the upper end of the moving plate 26, the output end of the air pump 27 extending through the moving plate 26 into the first groove, a nozzle 28 fixed to the output end of the air pump 27, and a fixing mechanism 30 assembled to the upper end of the base plate 10.

[0029] In this embodiment, when leakage current detection of the PCB board is required, the moving mechanism 20 pushes the moving plate 26 to move. An air pump 27 is provided at the upper end of the moving plate 26, and a nozzle 28 is provided at the output end of the air pump 27. The nozzle 28 can blow out residual impurities on the PCB board. After the impurities are blown out, the moving mechanism 20 drives the moving plate 26 back to its initial position. Simultaneously, the thermal imager 15 located at the lower end of the support plate 14 begins to perform leakage current detection on the PCB board, thereby improving the leakage current detection efficiency. (It should be noted that the air pump 27 is a miniature air pump 27.)

[0030] Secondly, please refer to it again. Figure 4 The lower end of the movable plate 26 is provided with bristles 29, which are evenly arranged and made of a flexible material.

[0031] In this embodiment, since the bristles 29 are made of flexible material, when the moving plate 26 approaches the PCB board, the bristles 29 will come into contact with the surface of the PCB board. Compared with rigid parts, the flexible bristles 29 will not scratch the circuits, solder joints and various electronic components on the PCB board, and can effectively protect the integrity of the PCB board. In addition, flexible materials are generally not prone to generating static electricity, thereby ensuring the normal performance and service life of the electronic components on the PCB board.

[0032] Secondly, please refer to the following as well. Figure 3 and Figure 5The lifting mechanism 16 includes a first motor 17, a first threaded rod 18, and a U-shaped rod 19. The first motor 17 is fixed to the upper end of the load-bearing plate 13. The first threaded rod 18 is fixed to the output end of the first motor 17 and extends through the load-bearing plate 13 to the interior of the support plate 11. The U-shaped rod 19 is rotatably connected to the outside of the first threaded rod 18 and is slidably connected to the fixed column 12.

[0033] In this embodiment, when it is necessary to adjust the height of the moving plate 26 and the air pump 27, the first motor 17 rotates to drive the first threaded rod 18 to rotate. Because the outer side of the first threaded rod 18 is rotatably connected to the U-shaped rod 19, and the two ends of the U-shaped rod 19 are slidably connected to the fixed column 12, the U-shaped rod 19 can rise or fall when the first threaded rod 18 rotates. It should be noted that the diameter of the hole opened inside the load-bearing plate 13 and the support plate 11 is larger than the diameter of the first threaded rod 18. When the first threaded rod 18 rotates, the load-bearing plate 13 and the support plate 11 will not rotate.

[0034] To further understand and explain, Figure 1 For example, the moving mechanism 20 includes a fixed plate 21, a second motor 22, a second threaded rod 23, and a moving seat 24. The fixed plate 21 is fixed to the outside of the U-shaped rod 19 near the end of the first threaded rod 18. The second motor 22 is fixed to the upper end of the fixed plate 21. The second threaded rod 23 is fixed to the output end of the second motor 22. The moving seat 24 is fixed to the upper end of the moving plate 26, and the moving seat 24 and the second threaded rod 23 are rotatably connected.

[0035] In this embodiment, when the moving mechanism 20 needs to be moved, the second motor 22 starts to rotate. The rotation of the second motor 22 drives the second threaded rod 23 to rotate. The second threaded rod 23 is rotatably connected to the moving seat 24. The moving seat 24 is fixedly connected to the moving plate 26. When the second threaded rod 23 rotates, it can drive the moving plate 26 to move. The brush bristles 29 on the moving plate 26 and the air pump 27 can reciprocate to clean the impurities on the PCB board.

[0036] In a preferred embodiment, please refer to Figure 3 The fixing mechanism 30 includes a first clamping plate 31, a fixing block 32, a third threaded rod 33, and a handwheel 34. The first clamping plate 31 is slidably connected to the upper end of the base plate 10. The fixing block 32 is fixed to one end of the base plate 10. The third threaded rod 33 passes through the fixing block 32 and extends into the interior of the first clamping plate 31. The third threaded rod 33 and the fixing block 32 are rotatably connected. The handwheel 34 is fixed to the end of the third threaded rod 33 away from the first clamping plate 31.

[0037] In this embodiment, when it is necessary to fix the PCB board, the handwheel 34 is turned. When the handwheel 34 rotates, it can drive the third threaded rod 33 to rotate. Since the third threaded rod 33 is rotatably connected to the fixing block 32, the third threaded rod 33 will move towards the first clamping plate 31. When the third threaded rod 33 moves, it will push the first clamping plate 31 to move. The movement of the first clamping plate 31 can fix the PCB board and prevent the PCB board from moving during cleaning.

[0038] Secondly, please refer to it again. Figure 3 The handwheel 34 is fitted with an anti-slip rubber sleeve on its outer side, and the outer side of the anti-slip rubber sleeve is evenly provided with several anti-slip patterns.

[0039] In this embodiment, when operating the handwheel 34, especially when the hands may be covered with oil or water, the anti-slip texture combined with the anti-slip rubber sleeve can greatly enhance the friction between the hand and the handwheel 34, effectively preventing misoperation due to slipping.

[0040] Secondly, please refer to the following as well. Figure 1 and Figure 3 The bottom plate 10 is fixed with a second clamping plate 35 at the end away from the first clamping plate 31, and the second clamping plate 35 and the first clamping plate 31 are both provided with a second groove on the side that is close to each other.

[0041] In this embodiment, both the first clamping plate 31 and the second clamping plate 35 are provided with second grooves. When it is necessary to detect leakage of the PCB circuit board, the PCB board can be placed between the two second grooves. The two second grooves form a clamp-like structure, which can stably clamp the PCB board placed between them, preventing the clamped PCB board from shaking or shifting in the axial and lateral directions, making the whole structure more robust and reliable.

[0042] Secondly, please refer to it again. Figure 3 T-shaped grooves are provided on both sides of the upper end of the base plate 10 and the lower end of the first clamping plate 31. Slider 36 is fixed on both sides of the lower end of the first clamping plate 31, and the slider 36 is adapted to the T-shaped groove.

[0043] In this embodiment, when the slider 36 slides along the T-shaped groove, it can provide a clear and precise path for the movement of the first clamping plate 31, while restricting unnecessary movement of the first clamping plate 31 in other directions (such as perpendicular to the groove direction, rotation direction, etc.), preventing the first clamping plate 31 from deviating from the predetermined track, swaying randomly, or other unstable conditions.

[0044] The working principle of this utility is as follows:

[0045] When leakage current detection is required on the PCB board, the PCB board is placed between the first clamping plate 31 and the second clamping plate 35 and fixed by the fixing mechanism 30. The moving plate 26 is adjusted by the lifting mechanism 16 to adapt to PCB boards of different shapes. The brush bristles 29 on the moving plate 26 and the air pump 27 can reciprocate to clean the impurities on the PCB board. The cleaned PCB board is then quickly detected by the thermal imager 15.

[0046] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A PCB circuit board leakage current fast detection module, comprising a base plate (10), characterized in that: A support plate (11) is fixed to one side of the upper end of the base plate (10). Fixed columns (12) are fixed to both ends of the support plate (11). A load-bearing plate (13) is fixed to the upper end of the fixed columns (12). A support plate (14) is fixed to one side of the load-bearing plate (13). A thermal imager (15) is fixed to the lower end of the support plate (14). A lifting mechanism (16) is assembled between the support plate (11) and the load-bearing plate (13). A [missing information - likely a device or equipment] is assembled to the upper end of the lifting mechanism (16). The moving mechanism (20) has a moving plate (26) at its lower end. The moving plate (26) has a first groove at one end away from the load-bearing plate (13). The moving plate (26) has an air pump (27) at its upper end. The output end of the air pump (27) extends through the moving plate (26) into the first groove. The output end of the air pump (27) is fixed with a nozzle (28). The base plate (10) has a fixing mechanism (30) at its upper end.

2. The PCB circuit board leakage current fast detection module according to claim 1, characterized in that: The lower end of the movable plate (26) is provided with bristles (29), the bristles (29) are evenly arranged, and the material of the bristles (29) is a flexible material.

3. The PCB circuit board leakage current fast detection module according to claim 1, characterized in that: The lifting mechanism (16) includes a first motor (17), a first threaded rod (18) and a U-shaped rod (19). The first motor (17) is fixed to the upper end of the load-bearing plate (13). The first threaded rod (18) is fixed to the output end of the first motor (17). The first threaded rod (18) extends through the load-bearing plate (13) to the interior of the support plate (11). The U-shaped rod (19) is rotatably connected to the outside of the first threaded rod (18). The U-shaped rod (19) and the fixed column (12) are slidably connected.

4. A PCB circuit board leakage current fast detection module according to claim 1, characterized in that: The moving mechanism (20) includes a fixed plate (21), a second motor (22), a second threaded rod (23), and a moving seat (24). The fixed plate (21) is fixed to the outside of the U-shaped rod (19) near the end of the first threaded rod (18). The second motor (22) is fixed to the upper end of the fixed plate (21). The second threaded rod (23) is fixed to the output end of the second motor (22). The moving plate (26) has a moving seat (24) fixed to its upper end, and the moving seat (24) is rotatably connected to the second threaded rod (23).

5. A PCB circuit board leakage current fast detection module according to claim 1, characterized in that: The fixing mechanism (30) includes a first clamping plate (31), a fixing block (32), a third threaded rod (33), and a handwheel (34). The first clamping plate (31) is slidably connected to the upper end of the base plate (10). The fixing block (32) is fixed to one end of the base plate (10). The third threaded rod (33) extends through the fixing block (32) into the interior of the first clamping plate (31), and the third threaded rod (33) and the fixing block (32) are rotatably connected. The handwheel (34) is fixed to the end of the third threaded rod (33) away from the first clamping plate (31).

6. A PCB circuit board leakage current fast detection module according to claim 5, characterized in that: The handwheel (34) is fitted with an anti-slip rubber sleeve on its outer side, and the outer side of the anti-slip rubber sleeve is evenly provided with several anti-slip patterns.

7. A PCB circuit board leakage current fast detection module according to claim 1, characterized in that: The bottom plate (10) is fixed with a second clamping plate (35) at one end away from the first clamping plate (31), and the second clamping plate (35) and the first clamping plate (31) are both provided with a second groove on the side that is close to each other.

8. A PCB circuit board leakage current fast detection module according to claim 1, characterized in that: T-shaped grooves are provided on both sides of the upper end of the base plate (10) and the lower end of the first clamping plate (31). Slider (36) is fixed on both sides of the lower end of the first clamping plate (31), and the slider (36) is adapted to the T-shaped groove.

Images