A multifunctional circuit board testing fixture

Abstract

The utility model discloses a multifunctional circuit board test fixture, including test device, the test device is by base, fixed plate and mounting bracket constitutes, the mounting bracket upper end both sides are equipped with telescopic link, the telescopic link bottom is equipped with mounting plate, the mounting plate bottom is equipped with FCT intelligent detector, the FCT intelligent detector bottom is equipped with detection probe, the FCT intelligent detector outside slide is equipped with the pressure frame, the pressure frame upper end both sides and mounting plate between are equipped with buffer mechanism, the fixed plate bottom is installed on the base upside, the fixed plate upside is equipped with moving mechanism, the moving mechanism upper end is equipped with workstation, the workstation upside is provided with the profiling groove. The utility model test is completed, and moving mechanism acts again, and drives the workstation to move to the blanking area, and the convenient operator takes out the circuit board that has completed the test, and the whole process is smooth and efficient, and the convenience and detection efficiency of greatly improved up and down material.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically a multifunctional circuit board testing fixture. Background Technology

[0002] Circuit board testing plays a crucial role in the electronics industry, primarily in improving product reliability: testing ensures that circuit boards do not fail under normal operating conditions, thereby improving overall product reliability; reducing maintenance costs: timely detection and repair of circuit board problems can prevent serious malfunctions during product use, reducing maintenance costs; and shortening development cycles: it helps identify design flaws, allowing developers to adjust design schemes promptly and shorten product development cycles. Test fixtures are required during the testing process.

[0003] Chinese Patent No. 202310687918.7 discloses a circuit board module test fixture, which includes multiple elastically retractable test probes. The multiple test probes are vertically arranged, and there is a mounting position below the probe base for a circuit testing device to be placed to contact the probe base. The probe tips are not at the same height. The test fixture is equipped with a circuit board positioning post to position the circuit board placed above the test probes required for testing. The circuit board positioning post is provided with a first thread for a first nut to be screwed in. When the first nut is screwed into the first thread, it presses down on the circuit board, causing the circuit board to press down the probe tips at higher positions until the test pins on the circuit board respectively contact the test probes required for testing.

[0004] This invention is very inconvenient for loading and unloading materials, and the materials are prone to shaking during inspection. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional circuit board testing fixture to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional circuit board testing fixture, comprising a testing device; the testing device consists of a base, a fixing plate, and a mounting frame, the mounting frame being installed on one side of the base, telescopic rods being installed on both sides of the upper end of the mounting frame, a mounting plate being installed at the bottom end of the telescopic rods, an FCT intelligent detector being installed at the bottom end of the mounting plate, a detection probe being installed at the bottom end of the FCT intelligent detector, a pressure frame being slidably installed on the outside of the FCT intelligent detector, a buffer mechanism being installed between the upper sides of the pressure frame and the mounting plate, the bottom end of the fixing plate being installed on the upper side of the base, a moving mechanism being installed on the upper side of the fixing plate, a worktable being installed on the upper end of the moving mechanism, and a contour groove being provided on the upper side of the worktable.

[0007] Preferably, a rubber pad is provided at the bottom of the pressure frame, and the rubber pad is attached to the bottom of the pressure frame with adhesive.

[0008] Preferably, the buffer mechanism consists of a buffer spring, a limiting plate, and a guide rod. The limiting plate is welded to the lower perimeter of the mounting plate, the bottom end of the guide rod is slidably mounted on the upper end of the pressure frame, the buffer spring is mounted on the upper side of the pressure frame located outside the guide rod, and the upper end of the limiting plate is welded to the bottom end of the guide rod.

[0009] Preferably, the moving mechanism consists of a lead screw, a lead screw nut, a moving block, and a motor. The lead screw nut is installed in the middle of the moving block, and the lead screw nut is rotatably installed on the outside of the lead screw. The lead screw is rotatably installed in the middle of the fixed plate. One end of the lead screw passes through the fixed plate and is installed at the front end of the motor. The motor is installed on one side of the fixed plate.

[0010] Preferably, the guiding mechanism consists of a groove and a ridge. The ridge is welded to both sides of the upper end of the fixed plate, the groove is disposed on both sides of the bottom end of the moving block, and the ridge slides inside the groove.

[0011] Preferably, the leveling mechanism consists of a threaded rod, a threaded cylinder, and a base plate. The base plate is rotatably mounted at the bottom end of the threaded rod, the upper end of the threaded rod is rotatably mounted inside the threaded cylinder, and the threaded cylinder is mounted around the bottom of the base.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. After the test is completed, the moving mechanism moves again, driving the worktable towards the unloading area, making it convenient for operators to take out the circuit board that has been tested. The whole process is smooth and efficient, greatly improving the convenience of loading and unloading and the efficiency of testing.

[0014] 2. When the pressure frame contacts the circuit board and is subjected to a reaction force, the pressure frame slides upward along the guide rod, compressing the buffer spring. The limiting plate restricts the sliding range of the guide rod to prevent the pressure frame from detaching from the mounting plate. The buffer spring absorbs the impact force through its own elastic deformation, distributing the pressure evenly and avoiding damage to the circuit board and detection probe caused by excessive instantaneous impact force. When the test is completed, the telescopic rod drives the FCT intelligent detector to rise, and the buffer spring restores its deformation, pushing the pressure frame to reset.

[0015] 3. During the movement of the moving block following the lead screw nut, the sliding grooves on both sides of the bottom of the moving block cooperate with the protrusions on both sides of the top of the fixed plate. The protrusions slide in the sliding grooves, providing guidance for the movement of the moving block and restricting the degree of freedom of the moving block in the direction perpendicular to the movement direction, so that it can only move horizontally along the axis of the lead screw. This structural design ensures the stability and straightness of the moving block during the movement process and avoids deviation or shaking.

[0016] 4. When the test is placed on an uneven surface, rotating the threaded rod causes it to move vertically up and down through the threaded action between the rod and the cylinder. Since the base plate is in contact with the ground, the movement of the threaded rod adjusts the height of the base vertically. By adjusting the leveling mechanisms around the bottom of the base, it can be leveled, ensuring the stability of the entire testing device. The base plate can rotate within a certain range to adapt to different ground contact angles, ensuring effective leveling. The leveling mechanism allows the equipment to remain level in various ground environments, avoiding testing errors caused by equipment tilt. This improves the adaptability and versatility of the equipment, ensuring stable operation in laboratories, workshops, and other locations, thereby improving the accuracy and reliability of the test results. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the moving mechanism of this utility model.

[0022] In the diagram: 1. Testing device; 2. Pressure frame; 3. Rubber pad; 4. Motor; 5. Lead screw nut; 6. FCT intelligent detector; 7. Detection probe; 8. Base; 9. Buffer mechanism; 10. Buffer spring; 11. Mounting plate; 12. Limiting plate; 13. Guide rod; 14. Mounting bracket; 15. Telescopic rod; 16. Leveling mechanism; 17. Threaded cylinder; 18. Threaded rod; 19. Base plate; 20. Fixing plate; 21. Guide mechanism; 22. Protrusion; 23. Slide groove; 24. Moving mechanism; 25. Contour groove; 26. Moving block; 27. Worktable; 28. Lead screw. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the present invention, a multifunctional circuit board testing fixture includes a testing device 1. The testing device 1 consists of a base 8, a fixing plate 20, and a mounting frame 14. The mounting frame 14 is installed on one side of the base 8. Telescopic rods 15 are installed on both sides of the upper end of the mounting frame 14. A mounting plate 11 is installed at the bottom end of the telescopic rods 15. An FCT intelligent detector 6 is installed at the bottom end of the mounting plate 11. A detection probe 7 is installed at the bottom end of the FCT intelligent detector 6. A pressure frame 2 is slidably installed on the outside of the FCT intelligent detector 6. A buffer mechanism 9 is installed between the upper sides of the pressure frame 2 and the mounting plate 11. The bottom end of the fixing plate 20 is installed on the upper side of the base 8. A moving mechanism 24 is installed on the upper side of the fixing plate 20. A worktable 27 is installed on the upper end of the moving mechanism 24. A contour groove 25 is provided on the upper side of the worktable 27.

[0025] Furthermore, a rubber pad 3 is provided at the bottom of the pressure frame 2. The rubber pad 3 is attached to the bottom of the pressure frame 2 with adhesive. When the pressure frame 2 descends to contact the circuit board, the rubber pad 3 at the bottom first adheres to the surface of the circuit board. Due to the good elasticity of rubber, it deforms under pressure and tightly fills the tiny bumps and depressions on the surface of the circuit board to form a stable contact surface. The setting of the rubber pad 3 effectively increases the friction between the pressure frame 2 and the circuit board, preventing the circuit board from shifting during the test and ensuring accurate contact between the detection probe 7 and the test point. Its elastic buffering characteristics further protect the surface of the circuit board and avoid scratches or damage caused by hard contact.

[0026] The buffer mechanism 9 consists of a buffer spring 10, a limiting plate 12, and a guide rod 13. The limiting plate 12 is welded to the lower perimeter of the mounting plate 11. The bottom end of the guide rod 13 is slidably mounted on the upper end of the pressure frame 2. The buffer spring 10 is mounted on the upper side of the pressure frame 2, located outside the guide rod 13. The upper end of the limiting plate 12 is welded to the bottom end of the guide rod 13. When the pressure frame 2 contacts the circuit board and is subjected to a reaction force, the pressure frame 2 slides upward along the guide rod 13, compressing the buffer spring 10. The limiting plate 12 restricts the sliding range of the guide rod 13, preventing the pressure frame 2 from detaching from the mounting plate 11. The buffer spring 10 absorbs the impact force through its own elastic deformation, distributing the pressure evenly and avoiding damage to the circuit board and the detection probe 7 caused by excessive instantaneous impact force. When the test is completed, when the telescopic rod 15 drives the FCT intelligent detector 6 to rise, the buffer spring 10 restores its deformation, pushing the pressure frame 2 to reset.

[0027] The moving mechanism 24 consists of a lead screw 28, a lead screw nut 5, a moving block 26, and a motor 4. The lead screw nut 5 is installed in the middle of the moving block 26 and is rotatably mounted on the outside of the lead screw 28. The lead screw 28 is rotatably mounted in the middle of the fixed plate 20. One end of the lead screw 28 passes through the fixed plate 20 and is mounted at the front end of the motor 4. The motor 4 is mounted on one side of the fixed plate 20. After the motor 4 starts, it drives the lead screw 28 to rotate. The lead screw nut 5 cooperates with the lead screw 28. Since the lead screw nut 5 is installed in the middle of the moving block 26, when the lead screw 28 rotates, the lead screw nut 5 moves along the axis of the lead screw 28, thereby driving the moving block 26 to slide horizontally on the fixed plate 20. The worktable 27 above the moving block 26 moves accordingly, sending the circuit board placed in the contour groove 25 on the worktable 27 to the designated detection position. By controlling the forward and reverse rotation and speed of the motor 4, the moving direction and speed of the worktable 27 can be precisely controlled to achieve accurate positioning of the circuit board.

[0028] The guide mechanism 21 consists of a groove 23 and a ridge 22. The ridge 22 is welded to both sides of the upper end of the fixed plate 20. The groove 23 is set on both sides of the bottom end of the moving block 26. The ridge 22 slides inside the groove 23. During the movement of the moving block 26 following the lead screw nut 5, the groove 23 on both sides of the bottom end of the moving block 26 cooperates with the ridge 22 on both sides of the upper end of the fixed plate 20. The ridge 22 slides in the groove 23, providing guidance for the movement of the moving block 26 and restricting the degree of freedom of the moving block 26 perpendicular to the direction of movement, so that it can only move horizontally along the axis of the lead screw 28. This structural design ensures the stability and straightness of the moving block 26 during the movement process and avoids deviation or shaking.

[0029] The leveling mechanism 16 consists of a threaded rod 18, a threaded cylinder 17, and a base plate 19. The base plate 19 is rotatably mounted at the bottom of the threaded rod 18, and the upper end of the threaded rod 18 is rotatably mounted inside the threaded cylinder 17. The threaded cylinder 17 is installed around the bottom of the base 8. When the equipment is placed on an uneven surface, rotating the threaded rod 18 causes it to move vertically up and down through the threaded action between it and the threaded cylinder 17. Since the base plate 19 is in contact with the ground, the movement of the threaded rod 18 allows the base 8 to adjust its height vertically. By adjusting the leveling mechanism 16 around the bottom of the base 8, the base 8 can be kept level, thus ensuring the stability of the entire testing device 1. The base plate 19 can rotate within a certain range to adapt to different angles of ground contact, ensuring the leveling effect. The existence of the leveling mechanism 16 allows the equipment to remain level in various ground environments, avoiding detection errors caused by equipment tilt. It improves the adaptability and versatility of the equipment, ensuring stable operation of the testing device 1 whether used in a laboratory, workshop, or other locations, thereby improving the accuracy and reliability of the test results.

[0030] The working principle and usage process of this utility model are as follows: When the testing device 1 is in use, the mounting frame 14 constructs a stable three-dimensional frame, providing solid support for the testing device 1. The telescopic rod 15 extends and retracts flexibly at the top of the mounting frame 14, driving the FCT intelligent tester 6 to precisely rise and fall in vertical space. This allows the test probe 7 to adjust the distance between itself and the circuit board as needed. The FCT intelligent tester 6 relies on the test probe 7 to precisely connect with the test points on the circuit board, quickly acquiring electrical signals and completing the functional test. The pressure frame 2 surrounds the outside of the FCT intelligent tester 6 and can slide freely along its outer wall. When the telescopic rod 15 drives the FCT intelligent tester 6 to descend, the pressure frame 2 first touches the surface of the circuit board, applying appropriate pressure to ensure that the test probe 7 is tightly attached to the test point. The pressure frame 2 experiences force at the instant... The buffer mechanism 9 responds immediately. Through the deformation of the elastic component, the buffer mechanism 9 evenly disperses the impact force, effectively preventing excessive pressure from damaging the circuit board. The moving mechanism 24 on the fixed plate 20 can not only drive the worktable 27 to move laterally, but also achieve reciprocating motion. When loading is required, the worktable 27 moves in a specific direction to the area where the circuit board to be tested is placed, and the operator places the circuit board into the contour groove 25. Subsequently, the moving mechanism 24 drives the worktable 27 to move in the opposite direction, so that the circuit board accurately reaches the bottom of the test probe 7 for testing. After the test is completed, the moving mechanism 24 moves again, driving the worktable 27 towards the unloading area, making it convenient for the operator to take out the tested circuit board. The whole process is smooth and efficient, greatly improving the convenience of loading and unloading and the testing efficiency.

[0031] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multifunctional circuit board test fixture comprising a test device (1) and a leveling mechanism (16); characterized in that: The test device (1) is composed of a base (8), a fixed plate (20) and a mounting bracket (14), the mounting bracket (14) is installed on one side of the base (8), the telescopic rod (15) is installed on both sides of the upper end of the mounting bracket (14), the mounting plate (11) is installed at the bottom of the telescopic rod (15), the FCT intelligent detector (6) is installed at the bottom of the mounting plate (11), the detection probe (7) is installed at the bottom of the FCT intelligent detector (6), the pressure frame (2) is slidably installed outside the FCT intelligent detector (6), the buffer mechanism (9) is installed between the upper end of the pressure frame (2) and the mounting plate (11), the fixed plate (20) is installed on the upper side of the base (8), the moving mechanism (24) is installed on the upper side of the fixed plate (20), and the workbench (27) is installed on the upper side of the moving mechanism (24).

2. The multi-functional circuit board testing fixture of claim 1, wherein: The bottom end of the pressure frame (2) is provided with a rubber pad (3), and the rubber pad (3) is pasted on the bottom end of the pressure frame (2) by adhesive.

3. The multi-functional circuit board testing fixture of claim 1, wherein: The buffer mechanism (9) is composed of a buffer spring (10), a limiting plate (12) and a guide rod (13), the limiting plate (12) is welded below the mounting plate (11) around, the guide rod (13) is slidably installed at the bottom end of the pressure frame (2), and the buffer spring (10) is installed on the upper side of the pressure frame (2) outside the guide rod (13). The limiting plate (12) is welded at the bottom end of the guide rod (13).

4. The multi-functional circuit board testing fixture of claim 1, wherein: The moving mechanism (24) is composed of a lead screw (28), a lead screw nut (5), a moving block (26) and a motor (4), the lead screw nut (5) is installed at the middle position of the moving block (26), the lead screw nut (5) is rotatably installed outside the lead screw (28), the lead screw (28) is rotatably installed in the middle of the fixed plate (20), one end of the lead screw (28) penetrates through the fixed plate (20) and is installed at the front end of the motor (4), and the motor (4) is installed on one side of the fixed plate (20).

5. The multi-functional circuit board testing fixture of claim 1, wherein: The guide mechanism (21) is composed of a sliding groove (23) and a convex strip (22), the convex strip (22) is welded on both sides of the upper end of the fixed plate (20), and the sliding groove (23) is arranged on both sides of the bottom end of the moving block (26). The convex strip (22) slides in the sliding groove (23).

6. The multi-functional circuit board testing fixture of claim 1, wherein: The leveling mechanism (16) is composed of a threaded rod (18), a threaded barrel (17) and a bottom plate (19), the bottom plate (19) is rotatably installed at the bottom end position of the threaded rod (18), the threaded rod (18) is rotatably installed at the inner position of the threaded barrel (17), and the threaded barrel (17) is installed around the bottom end of the base (8).

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