High-voltage-resistant testing device for PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of circuit board testing, in particular to a PCB high voltage resistance testing device, which comprises a testing table, a support frame and a testing clamping plate, the support frame is fixedly connected to the upper surface of the testing table, the testing clamping plate comprises a bottom plate and a top plate, and the top plate is movably connected to the support frame. The bottom plate is detachably installed on the upper surface of the test bench, the upper surface of the bottom plate is provided with a lower contact piece and a plurality of placing grooves, the lower contact piece is connected with the plurality of placing grooves, and the top plate is provided with an upper contact piece at a position corresponding to the lower contact piece. According to the utility model, the high-voltage-resistant test can be carried out on a plurality of PCBs at the same time, the number of the PCBs which can be tested in unit time is remarkably increased, and the overall test efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, and in particular to a PCB board high voltage withstand testing device. Background Technology

[0002] In the manufacturing process of electronic products, the withstand voltage test of printed circuit boards (PCBs) is a critical step to ensure product quality and safety. The withstand voltage test is mainly used to verify whether the PCB will experience insulation breakdown under a specified voltage, ensuring that its insulation performance meets design requirements. The withstand voltage tester is the core equipment for performing PCB withstand voltage testing, capable of outputting a stable high voltage and precisely controlling parameters such as test voltage, test time, and current limits.

[0003] During testing, the PCB board is placed on an insulating support, the test fixture is adjusted, and the output electrodes of the withstand voltage tester are connected to the test points on the PCB board, ensuring good contact between the test electrodes and the test points. However, existing withstand voltage testing devices have a significant drawback: the test fixture can only hold one PCB board at a time for testing. This single-board testing method severely impacts testing efficiency, especially in large-scale production environments, and cannot meet the demands for efficient and rapid testing. Utility Model Content

[0004] To improve the testing efficiency of PCB boards, this application provides a high-voltage withstand testing device for PCB boards.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A high-voltage withstand test device for PCB boards includes a test platform, a support frame, and a test clamp. The support frame is fixedly connected to the upper surface of the test platform. The test clamp includes a bottom plate and a top plate. The top plate is movably connected to the support frame. The bottom plate is detachably installed on the upper surface of the test platform. The upper surface of the bottom plate is provided with a lower contact piece and multiple placement slots. The lower contact piece is connected to the multiple placement slots. The top plate is provided with an upper contact piece corresponding to the position of the lower contact piece.

[0007] By employing the aforementioned device, multiple placement slots are created on the base plate for placing PCB boards. Each placement slot is equipped with a lower contact plate, and corresponding upper contact plates are installed on the top plate. This allows the device to simultaneously perform high-voltage withstand tests on multiple PCB boards. Compared to existing devices that can only test one PCB board at a time, this multi-board testing method significantly reduces the idle time of the testing equipment, substantially increases the number of PCB boards that can be tested per unit time, and thus improves overall testing efficiency.

[0008] Preferably, the test platform includes a storage box and a test cover plate. The test cover plate is hinged to the top of the storage box, and a first contact pin is disposed through the test cover plate. The first contact pin is located directly below the base plate and in contact with the lower contact plate.

[0009] Preferably, a second contact pin is provided through the top plate, and the second contact pin is used to abut against the PCB board during testing.

[0010] By employing the aforementioned device, both the first and second contact pins are contact-type electrodes. When the base plate is installed, the first contact pin automatically contacts the lower contact piece. After power is applied, the first contact pin and the lower contact piece form an electrical connection, while the PCB board is placed in the placement slot and connects with the lower contact piece, thereby achieving rapid connection between the test electrode and the test point on the PCB board. Simultaneously, the top plate descends to a suitable position, causing the second contact pin to abut against the PCB board. This reduces the need for manual connection of the test electrodes, improves the automation level of the testing operation, reduces testing errors caused by improper human operation, and further improves testing efficiency.

[0011] Preferably, the upper surface of the test cover is provided with a positioning pin and a support pin, the base plate is provided with a positioning hole, the positioning pin passes through the positioning hole, and the support pin abuts against the lower surface of the base plate.

[0012] By employing the aforementioned device, the positioning pin passes through the positioning hole in the base plate, precisely fixing the base plate and its PCB board in the test position. This ensures that the PCB board does not shift during testing, allowing the first contact pin to accurately contact the lower contact piece, thereby improving the reliability and accuracy of the test. The support pin abuts against the lower surface of the base plate, providing stable support. Furthermore, through the cooperation of the positioning pin and the support pin, the base plate is ensured to be in the same position and orientation each time it is placed. This highly consistent positioning method reduces the tilting of the base plate, ensures the stability of the contact between the first contact pin and the lower contact piece, and improves the repeatability and consistency of the test results.

[0013] Preferably, the support frame includes two side plates and a mounting plate connected between the two side plates, a drive cylinder is connected to the middle of the mounting plate, and the output end of the drive cylinder is connected to the top plate.

[0014] By adopting the above-mentioned device, the output end of the drive cylinder is connected to the top plate, realizing the automated lifting control of the top plate. This enables the testing device to automatically complete the clamping and releasing operations of the PCB board, reducing manual intervention and improving testing efficiency.

[0015] Preferably, the mounting plate has a strip-shaped hole, and a fastener is inserted through the strip-shaped hole. The drive cylinder is connected to the mounting plate through the fastener.

[0016] By adopting the above-mentioned device, the installation position of the drive cylinder can be adjusted along the length of the strip hole to adapt to the testing requirements of PCB boards of different sizes and specifications, thereby enhancing the versatility and flexibility of the testing device.

[0017] Preferably, the test cover plate is further provided with a slide rod, the top end of which is fixedly connected to the mounting plate, and the top plate is sleeved on the outer surface of the slide rod.

[0018] By using the above-mentioned device, the slide bar plays a guiding role, which helps to improve the stability of the top plate during the lifting process.

[0019] Preferably, the lower contact piece is provided with a plurality of protrusions, which are correspondingly disposed in the middle of the placement groove.

[0020] By using the above-mentioned device, the bump can form a more stable contact with the test points on the PCB board, which can effectively reduce test errors caused by poor contact and ensure the stability and reliability of current transmission during the test.

[0021] This application has the following beneficial effects:

[0022] 1. In this application, multiple placement slots are provided on the base plate for placing PCB boards. Each placement slot is equipped with a lower contact piece, and a corresponding upper contact piece is installed on the top plate. This allows the device to simultaneously perform high-voltage withstand tests on multiple PCB boards. Compared with existing devices that can only test one PCB board at a time, this multi-board testing method significantly reduces the idle time of the testing equipment, significantly increases the number of PCB boards that can be tested per unit time, and thus improves the overall testing efficiency.

[0023] 2. In this application, both the first and second contact pins are contact-type electrodes. When the base plate is installed, the first contact pin automatically contacts the lower contact piece. After power is applied, the first contact pin and the lower contact piece form an electrical connection, while the PCB board is placed in the placement slot and connects with the lower contact piece, thereby achieving rapid connection between the test electrode and the test point on the PCB board. Simultaneously, the top plate descends to a suitable position, causing the second contact pin to abut against the PCB board. This reduces the need for manual connection of the test electrodes, improves the automation level of the testing operation, reduces testing errors caused by improper human operation, and further improves testing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the PCB board high voltage withstand testing device according to an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram from another perspective of the PCB board high voltage withstand testing device of this utility model embodiment;

[0026] Figure 3 This is a rear view of the PCB board high voltage resistance testing device according to an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Test stand; 11. Storage box; 12. Test cover plate; 121. First contact pin; 122. Positioning pin; 123. Support pin; 2. Support frame; 21. Side plate; 22. Mounting plate; 221. Strip hole; 222. Fastener; 3. Test clamp plate; 31. Base plate; 311. Lower contact piece; 311a. Protrusion; 312. Placement slot; 313. Positioning hole; 32. Top plate; 321. Upper contact piece; 322. Second contact pin; 4. Drive cylinder; 5. Slide rod. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] A high-voltage withstand testing device for PCB boards, such as Figure 1-2 As shown, the test setup includes a test bench 1, a support frame 2, and a test clamping plate 3. The test clamping plate 3 includes a base plate 31 and a top plate 32. The top plate 32 is movably connected to the support frame 2, and the base plate 31 is detachably mounted on the upper surface of the test bench 1. A lower contact piece 311 is mounted on the upper surface of the base plate 31, and multiple square placement slots 312 are formed on the upper surface of the base plate 31. These slots are spaced apart, and the lower contact piece 311 connects to multiple placement slots 312. An upper contact piece 321 is mounted on the top plate 32 at the position corresponding to the lower contact piece 311. During testing, multiple PCBs can be placed in the corresponding placement slots 312 simultaneously for testing, achieving the goal of completing the withstand voltage test of multiple PCBs at once, significantly improving testing efficiency and reducing labor costs. Both the upper contact piece 321 and the lower contact piece 311 are made of metal.

[0031] like Figure 1-2 As shown, the test platform 1 includes a storage box 11 and a test cover 12. The test cover 12 is hinged to the top of the storage box 11. Multiple first contact pins 121 are disposed through the test cover 12, arranged in two parallel rows directly below the lower contact plate 311. The top of each first contact pin 121 contacts the lower contact plate 311, and its bottom connects to the test circuitry to form an electrical connection. Additionally, multiple second contact pins 322 are disposed through the top plate 32, also arranged in two parallel rows. During testing, the second contact pins 322 contact the PCB board. In this embodiment, both the first contact pins 121 and the second contact pins 322 are contact electrode types.

[0032] like Figure 1As shown, multiple columnar bumps 311a are integrally formed on the lower contact piece 311, and each bump 311a is located in the center of the placement groove 312. During testing, the PCB board is placed in the placement groove 312, and the bumps 311a can limit the movement of the PCB board to reduce possible movement of the PCB board during testing, thereby improving the accuracy of the test results.

[0033] like Figure 1 As shown, the upper surface of the test cover plate 12 is provided with multiple positioning pins 122 and support pins 123, and the base plate 31 has multiple positioning holes 313. When installing the base plate 31, the positioning holes 313 are aligned with the positioning pins 122, so that the positioning pins 122 pass through the positioning holes 313, while the support pins 123 abut against the bottom of the base plate 31, maintaining a certain distance between the base plate 31 and the test cover plate 12. Furthermore, the support pins 123 maintain a consistent height at all positions of the base plate 31, reducing the possibility of the base plate 31 tilting, thereby ensuring the stability of the contact between the first contact pin 121 and the lower contact piece 311, and further improving the accuracy of the test results.

[0034] In addition, such as Figure 1-3 As shown, the support frame 2 includes two side plates 21 and a mounting plate 22 connecting the two side plates 21. The mounting plate 22 has three slotted holes 221 in its center, each through which a fastener 222 is installed. The drive cylinder 4 is connected to the mounting plate 22 via the fasteners 222, facilitating adjustment of its position. The output end of the drive cylinder 4 is connected to the top plate 32 to drive its lifting and lowering movement. Two sliding rods 5 are also installed on the test cover plate 12. The top ends of the sliding rods 5 are fixedly connected to the mounting plate 22, and the top plate 32 is fitted over the outer surface of the sliding rods 5, ensuring that the top plate 32 maintains a straight line during vertical movement and preventing tilting or jamming. In this embodiment, the fasteners 222 are bolts.

[0035] Working principle: During testing, the PCB board is placed in the placement slot 312, aligning the holes on the PCB board with the protrusions 311a. Driven by the drive cylinder 4, the top plate 32 moves downward. When the second contact pin 322 on the top plate 32 abuts against the PCB board, positioning is completed. At this time, the circuit is connected, and the first contact pin 121, the lower contact piece 311, the PCB board, and the second contact pin 322 form an electrical connection, allowing the PCB board to be tested. This application allows multiple PCB boards to be placed simultaneously by adding multiple placement slots 312, and establishes circuit connections using uniform upper and lower contact pieces 311, simplifying the operation process and significantly improving work efficiency.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PCB board high voltage withstand testing device, characterized in that, The test includes a test bench (1), a support frame (2), and a test clamp (3). The support frame (2) is fixedly connected to the upper surface of the test bench (1). The test clamp (3) includes a bottom plate (31) and a top plate (32). The top plate (32) is movably connected to the support frame (2). The bottom plate (31) is detachably installed on the upper surface of the test bench (1). The upper surface of the bottom plate (31) is provided with a lower contact piece (311) and multiple placement slots (312). The lower contact piece (311) is connected to multiple placement slots (312). The top plate (32) is provided with an upper contact piece (321) corresponding to the position of the lower contact piece (311).

2. The PCB board high voltage withstand testing device according to claim 1, characterized in that, The test platform (1) includes a storage box (11) and a test cover plate (12). The test cover plate (12) is hinged to the top of the storage box (11). A first contact pin (121) is provided through the test cover plate (12). The first contact pin (121) is located directly below the base plate (31) and is in contact with the lower contact piece (311).

3. The PCB board high voltage withstand testing device according to claim 1, characterized in that, A second contact pin (322) is provided through the top plate (32), and the second contact pin (322) is used to abut against the PCB board during testing.

4. The PCB board high voltage withstand testing device according to claim 2, characterized in that, The upper surface of the test cover plate (12) is provided with a positioning pin (122) and a support pin (123). The base plate (31) is provided with a positioning hole (313). The positioning pin (122) passes through the positioning hole (313), and the support pin (123) abuts against the lower surface of the base plate (31).

5. The PCB board high voltage withstand testing device according to claim 2, characterized in that, The support frame (2) includes two side plates (21) and a mounting plate (22) connected between the two side plates (21). A drive cylinder (4) is connected to the middle of the mounting plate (22), and the output end of the drive cylinder (4) is connected to the top plate (32).

6. The PCB board high voltage withstand testing device according to claim 5, characterized in that, The mounting plate (22) has a strip hole (221) and a fastener (222) is installed through the strip hole (221). The drive cylinder (4) is connected to the mounting plate (22) through the fastener (222).

7. A PCB board high voltage withstand testing device according to claim 5, characterized in that, The test cover plate (12) is also provided with a slide rod (5), the top of the slide rod (5) is fixedly connected to the mounting plate (22), and the top plate (32) is sleeved on the outer surface of the slide rod (5).

8. The PCB board high voltage withstand testing device according to claim 1, characterized in that, The lower contact piece (311) is provided with a plurality of protrusions (311a), which are correspondingly disposed in the middle of the placement groove (312).

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