A clamping device for detecting a circuit board for a BMS

Abstract

This utility model relates to the technical field of circuit board testing equipment and discloses a clamping device for circuit board testing in BMS, including a mounting frame. A first clamping seat and a second clamping seat are symmetrically arranged on one side of the mounting frame. Both the first and second clamping seats have buffer pads on their inner sides. Miniature electric cylinders are vertically mounted on the upper surfaces of the first and second clamping seats respectively. A pressure plate is rigidly connected to the transmission end of the bottom of each miniature electric cylinder. A thin-film pressure sensor is fixedly attached to the center of the bottom surface of the pressure plate. This clamping device for circuit board testing in BMS, by providing buffer pads on the inner sides of the first and second clamping seats and by providing a thin-film pressure sensor and a silicone pad on the bottom surface of the pressure plate, can securely clamp the circuit board while avoiding damage to the circuit board due to excessive clamping force. The thin-film pressure sensor monitors the clamping pressure in real time to ensure uniform and appropriate clamping force, thereby improving the stability and testing accuracy during the circuit board testing process.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board testing equipment, specifically a clamping device for testing circuit boards for BMS. Background Technology

[0002] During the manufacturing process of BMS circuit boards, multiple performance tests need to be performed on the circuit boards. During testing, clamping devices are usually used to fix the circuit boards in order to ensure the accuracy and stability of the tests.

[0003] The existing patent document CN220839876U discloses a clamping device for testing circuit boards in a BMS. This utility model allows the operator to release the pressing frame after the first rotating frame is rotated to a suitable position. The spring returns to its original position, allowing the pressing frame to slide into the fixed groove, thereby fixing the angle of the first rotating frame. At the same time, the operator's second handle drives the threaded rod to rotate through the second rotating shaft, thereby achieving multi-directional adjustment of the circuit board and enabling the operator to use the device to test the circuit board at different angles.

[0004] However, existing clamping devices for circuit board inspection in BMS are not convenient for effective dynamic protection of circuit boards during use. In actual inspection scenarios, traditional clamping devices mostly adopt fixed clamping structures, relying on rigid clamps to limit the circuit board. They lack adaptability to changes in the external environment and the dynamic process of inspection operations. When the inspection equipment vibrates during operation, or when operators perform actions such as plugging and unplugging tests or probe contact, the circuit board is very likely to shift or vibrate within the clamping space, resulting in damage such as loose solder joints and component detachment. Although some devices are equipped with buffer pads, they lack real-time pressure monitoring and feedback mechanisms, and cannot dynamically adjust the clamping force according to the actual stress state of the circuit board. This poses a dual risk of "overpressure damage" and "clamping failure." This makes it difficult for existing clamping devices to meet the stringent requirements of high-precision fields such as new energy vehicles and aerospace for the efficiency and safety of circuit board inspection, thus restricting the inspection quality and development process of related industries. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a clamping device for testing circuit boards for BMS, so as to solve the problem mentioned in the background art that the existing clamping devices for testing circuit boards for BMS are not convenient for effective dynamic protection of circuit boards during use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a clamping device for testing circuit boards for BMS, comprising a mounting frame, wherein a first clamping seat and a second clamping seat are symmetrically arranged on one side of the mounting frame, and a buffer pad is provided on the inner side of both the first clamping seat and the second clamping seat;

[0009] The upper surfaces of the first clamping seat and the second clamping seat are respectively vertically mounted with miniature electric cylinders. The transmission end of the bottom of the miniature electric cylinder is rigidly connected to a pressure plate. A thin film pressure sensor is attached and fixed at the center of the bottom surface of the pressure plate. A silicone pad is provided on the side of the thin film pressure sensor away from the pressure plate.

[0010] As a further improvement to the above solution, a drive motor is fixedly installed on one side inside the mounting bracket, and a bidirectional lead screw is fixedly connected to the transmission end of the drive motor. The end of the bidirectional lead screw away from the drive motor is connected to the mounting bracket through a bearing.

[0011] As a further improvement to the above solution, the outer surface of the bidirectional lead screw is connected with a lead screw nut by a thread, and there are two sets of lead screw nuts, which are in sliding fit with the mounting bracket.

[0012] As a further improvement to the above solution, a movable rod is vertically fixed to the bottom end of the lead screw nut, and a slide is provided below the mounting bracket, with a slider slidably arranged inside the slide.

[0013] As a further improvement to the above solution, the slider is located at the end of the moving rod away from the lead screw nut, a fixing plate is fixedly installed on one side of the moving rod, and an adjusting motor is installed on one side of the fixing plate.

[0014] As a further improvement to the above solution, the transmission end of the adjusting motor passes through the fixed plate and is connected to the first clamping seat. The first clamping seat is located on one side of the corresponding inner side of the two fixed plates, and the second clamping seat is connected to the other side of the corresponding inner side of the two fixed plates through a support bearing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The circuit board inspection clamping device of this BMS, by setting buffer pads inside the first clamping seat and the second clamping seat, and setting a thin film pressure sensor and a silicone pad on the bottom surface of the pressure plate, can firmly clamp the circuit board while avoiding damage to the circuit board due to excessive clamping force. The thin film pressure sensor monitors the clamping pressure in real time to ensure that the clamping force is uniform and appropriate, thereby improving the stability and inspection accuracy of the circuit board inspection process.

[0017] 2. The BMS circuit board inspection clamping device uses a drive motor to rotate a bidirectional lead screw, causing the lead screw nut to move along the bidirectional lead screw, which in turn drives the moving rod, slider and other components to move together, realizing flexible adjustment of the distance between the first clamping seat and the second clamping seat. This design can adapt to circuit boards of different sizes, expand the application range of the clamping device and meet diverse inspection needs.

[0018] 3. The circuit board inspection clamping device of this BMS uses a motor to drive the first clamping seat to rotate, while the second clamping seat is connected to the fixed plate through a support bearing. This allows for precise adjustment of the circuit board angle, enabling inspectors to inspect the circuit board from different angles and avoiding blind spots caused by the circuit board placement angle. This greatly improves the convenience and comprehensiveness of circuit board inspection. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the buffer pad of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the mounting bracket of this utility model;

[0022] Figure 4 This is an enlarged structural schematic diagram showing a partial detail of the carriage of this utility model.

[0023] In the diagram: 1. Mounting bracket; 2. First clamping seat; 3. Second clamping seat; 4. Buffer pad; 5. Miniature electric cylinder; 6. Pressure plate; 7. Thin-film pressure sensor; 8. Silicone pad; 9. Drive motor; 10. Bidirectional lead screw; 11. Lead screw nut; 12. Moving rod; 13. Slide carriage; 14. Slider; 15. Fixing plate; 16. Adjusting motor; 17. Support bearing. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4This utility model provides a technical solution: a clamping device for testing circuit boards for BMS, including a mounting frame 1, a first clamping seat 2 and a second clamping seat 3 symmetrically arranged on one side of the mounting frame 1, and a buffer pad 4 arranged on the inner side of both the first clamping seat 2 and the second clamping seat 3.

[0026] The upper surfaces of the first clamping seat 2 and the second clamping seat 3 are respectively vertically mounted with miniature electric cylinders 5. The transmission end of the bottom of the miniature electric cylinder 5 is rigidly connected to a pressure plate 6. A thin film pressure sensor 7 is pasted and fixed at the center of the bottom surface of the pressure plate 6. A silicone pad 8 is covered on the side of the thin film pressure sensor 7 away from the pressure plate 6.

[0027] The circuit board is placed between the first clamping seat 2 and the second clamping seat 3. Then, the micro electric cylinder 5 is activated. The transmission end of the micro electric cylinder 5 drives the pressure plate 6 to move down. During the process of the pressure plate 6 contacting the circuit board, the thin film pressure sensor 7 on the bottom surface begins to monitor the pressure in real time. When the pressure reaches the set value, the micro electric cylinder 5 stops moving. At this time, the silicone pad 8 and the buffer pad 4 work together to provide buffer protection. At the same time, the feedback mechanism of the thin film pressure sensor 7 ensures that the clamping force is always within a suitable range. If the pressure changes due to equipment vibration, operation, etc. during the detection process, the thin film pressure sensor 7 will immediately feed back the signal to the control system (not shown in the figure). The control system controls the micro electric cylinder 5 to make corresponding adjustments to achieve dynamic pressure regulation and prevent "overpressure damage" or "clamping failure".

[0028] A drive motor 9 is fixedly installed on one side inside the mounting bracket 1. A bidirectional lead screw 10 is fixedly connected to the transmission end of the drive motor 9. The end of the bidirectional lead screw 10 away from the drive motor 9 is connected to the mounting bracket 1 through a bearing. A lead screw nut 11 is threadedly connected to the outer surface of the bidirectional lead screw 10. There are two sets of lead screw nuts 11. The lead screw nuts 11 are slidably engaged with the mounting bracket 1. The bottom end of the lead screw nuts 11 is vertically fixed to a moving rod 12. A slide 13 is provided below the mounting bracket 1. A slider 14 is slidably arranged inside the slide 13. The slider 14 is located at the end of the moving rod 12 away from the lead screw nut 11. A fixing plate 15 is fixedly installed on one side of the moving rod 12. An adjusting motor 16 is installed on one side of the fixing plate 15. The transmission end of the adjusting motor 16 passes through the fixing plate 15 and is connected to the first clamping seat 2. The first clamping seat 2 is located on one side of the corresponding inner side of the two fixing plates 15. The second clamping seat 3 is connected to the other side of the corresponding inner side of the two fixing plates 15 through a support bearing 17.

[0029] When testing the BMS circuit board is required, the drive motor 9 is started first. The drive motor 9 drives the bidirectional lead screw 10 to rotate. Since the outer surface of the bidirectional lead screw 10 is connected to two sets of lead screw nuts 11 by threads, and the lead screw nuts 11 are slidably engaged with the mounting bracket 1, as the bidirectional lead screw 10 rotates, the two sets of lead screw nuts 11 will move in opposite directions along the lead screw, thereby driving the moving rod 12, which is vertically fixed to the bottom end of the lead screw nuts 11, to move. The moving rod 12 drives the slider 14 to slide within the slide 13, and at the same time pushes the fixed plate 15 to move, so that the distance between the first clamping seat 2 and the second clamping seat 3 is increased. To accommodate circuit boards of different sizes, the adjustment motor 16 is activated during the circuit board angle adjustment process. Its transmission end drives the first clamping seat 2 to rotate, while the second clamping seat 3 is connected to the fixed plate 15 through the support bearing 17. This allows for flexible coordination with the rotation of the first clamping seat 2, thereby enabling multi-angle adjustment of the circuit board. During the rotation process, all components work closely together to maintain stable clamping of the circuit board, preventing displacement or damage due to angle changes. This meets the needs of testing personnel to inspect circuit boards from different angles, comprehensively ensuring the safety and stability of the circuit board during the testing process.

[0030] Working principle: When the BMS circuit board needs to be tested, the drive motor 9 is started first. The drive motor 9 drives the bidirectional lead screw 10 to rotate. Since the outer surface of the bidirectional lead screw 10 is connected to two sets of lead screw nuts 11 by threads, and the lead screw nuts 11 are slidably engaged with the mounting bracket 1, as the bidirectional lead screw 10 rotates, the two sets of lead screw nuts 11 will move in opposite directions along the lead screw, thereby driving the moving rod 12, which is vertically fixed to the bottom end of the lead screw nuts 11, to move. The moving rod 12 drives the slider 14 to slide in the slide 13, and at the same time pushes the fixed plate 15 to move, so that the distance between the first clamping seat 2 and the second clamping seat 3 is adjusted to accommodate circuit boards of different sizes. The circuit board is placed between the two. Then, the micro electric cylinder 5 is started. The transmission end of the bottom of the micro electric cylinder 5 drives the pressure plate 6 to move down. During the process of the pressure plate 6 contacting the circuit board, the thin film pressure sensor 7 on the bottom surface begins to monitor the pressure in real time. When the pressure reaches the set value, the micro electric cylinder 5 stops moving. At this time, the silicone pad 8 and the buffer pad 4 Together, they provide buffer protection while utilizing the feedback mechanism of the thin-film pressure sensor 7 to ensure that the clamping force is always within a suitable range. If the pressure changes due to equipment vibration or operational actions during the testing process, the thin-film pressure sensor 7 will immediately feed the signal back to the control system (not shown in the figure). The control system controls the miniature electric cylinder 5 to make corresponding adjustments, realizing dynamic pressure regulation and preventing "overpressure damage" or "clamping failure". In the circuit board angle adjustment stage, the adjusting motor 16 is started, and its transmission end drives the first clamping seat 2 to rotate. The second clamping seat 3 is connected to the fixed plate 15 through the support bearing 17, which can flexibly cooperate with the rotation of the first clamping seat 2, thereby realizing multi-angle adjustment of the circuit board. During the rotation, the components work closely together to maintain stable clamping of the circuit board and avoid displacement or damage due to angle changes. This meets the needs of the testing personnel to test the circuit board from different angles and comprehensively ensures the safety and stability of the circuit board during the testing process.

[0031] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A clamping device for testing circuit boards in a BMS, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is symmetrically provided with a first clamping seat (2) and a second clamping seat (3) on one side, and a buffer pad (4) is provided on the inner side of both the first clamping seat (2) and the second clamping seat (3); The upper surfaces of the first clamping seat (2) and the second clamping seat (3) are respectively vertically mounted with miniature electric cylinders (5). The transmission end of the bottom of the miniature electric cylinder (5) is rigidly connected to a pressure plate (6). A thin film pressure sensor (7) is pasted and fixed at the center of the bottom surface of the pressure plate (6). A silicone pad (8) is provided on the side of the thin film pressure sensor (7) away from the pressure plate (6).

2. The clamping device for circuit board testing in a BMS according to claim 1, characterized in that: A drive motor (9) is fixedly installed on one side inside the mounting bracket (1). A bidirectional lead screw (10) is fixedly connected to the transmission end of the drive motor (9). The end of the bidirectional lead screw (10) away from the drive motor (9) is connected to the mounting bracket (1) through a bearing.

3. The clamping device for circuit board testing in a BMS according to claim 2, characterized in that: The outer surface of the bidirectional lead screw (10) is connected to a lead screw nut (11) by a thread. There are two sets of lead screw nuts (11), and the lead screw nuts (11) are in sliding fit with the mounting bracket (1).

4. The clamping device for circuit board testing in a BMS according to claim 3, characterized in that: The bottom end of the lead screw nut (11) is vertically fixed to the moving rod (12), and a slide (13) is provided below the mounting bracket (1). A slider (14) is slidably arranged inside the slide (13).

5. A clamping device for testing circuit boards for BMS according to claim 4, characterized in that: The slider (14) is located at the end of the moving rod (12) away from the lead screw nut (11). A fixing plate (15) is fixedly provided on one side of the moving rod (12), and an adjusting motor (16) is installed on one side of the fixing plate (15).

6. The clamping device for circuit board testing in a BMS according to claim 5, characterized in that: The transmission end of the regulating motor (16) passes through the fixed plate (15) and is connected to the first clamping seat (2). The first clamping seat (2) is located on one side of the corresponding inner side of the two fixed plates (15). The second clamping seat (3) is connected to the other side of the corresponding inner side of the two fixed plates (15) through the support bearing (17).

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