PCB board quick plug-in connection device for display screen test

By using a motor-driven plug-in slider and an adjustable plug-in port design, automated and rapid plug-in connection of PCB boards is achieved, solving the problems of low efficiency and poor adaptability of traditional manual operation, and improving testing efficiency and equipment utilization.

CN224553310UActive Publication Date: 2026-07-24SHENZHEN TENGDAXIANG ELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN TENGDAXIANG ELECTRONIC TECH CO LTD
Filing Date
2025-06-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional PCB board inspection relies on manual operation, resulting in low inspection efficiency, severe equipment wear and tear, and poor adaptability, which cannot meet the needs of large-scale production.

Method used

It adopts a motor-driven plug-in slider and an adjustable test plug-in port to realize automated and fast plug-in connection of PCB board. Combined with electric clamping parts and adjustable plug-in ports, it can adapt to PCB boards of different specifications.

Benefits of technology

Significantly improves testing efficiency, reduces equipment wear, enhances device adaptability, reduces manual fixing time, adapts to diverse PCB boards, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of PCB board plug -pull technology for display screen test, and disclose PCB board quick plug -in connection device for display screen test, including test board, pull -out sliding part, electric clamping piece, motor and adjustable test pull -out mouth, the test board top is equipped with pull -out sliding part, pull -out sliding part corresponds with test board top sliding fit connection, and test board side wall is equipped with motor, motor threaded output shaft corresponds to be worn into test board inside, and motor threaded output shaft corresponds with pull -out sliding part bottom fit connection, pull -out sliding part top is fixedly connected with two electric clamping pieces that are axially symmetrical distribution through the adaptation screw, and test board top side wall is equipped with adjustable test pull -out mouth, adjustable test pull -out mouth corresponds with test board inside clamping fit, this PCB board quick plug -in connection device simple structure can improve the pull -out smoothness greatly, improve the detection efficiency, effectively guarantee the quality of PCB board.
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Description

Technical Field

[0001] This utility model relates to the field of PCB board insertion and removal technology for display screen testing, specifically a quick insertion and removal connection device for PCB board for display screen testing. Background Technology

[0002] With the rapid development of the display industry, the market demand for display products continues to rise. Production efficiency and product quality have become the key to corporate competition. In the display production process, PCB board inspection is an indispensable and important link, and its inspection efficiency directly affects the overall production progress.

[0003] Traditional PCB board testing primarily relies on manual operation to insert and remove the PCB board from the testing device. Due to the limited speed of manual operation, rapid and continuous testing is difficult, significantly reducing overall testing efficiency and failing to meet the high-efficiency requirements of large-scale production. Furthermore, the difficulty in precisely controlling force and angle during manual insertion and removal easily leads to frequent and unreasonable external forces on the testing device interface and PCB board pins, resulting in significant wear and tear, shortening the lifespan of both the testing device and the PCB board, and increasing equipment maintenance and replacement costs for enterprises. In addition, manual operation is susceptible to subjective factors such as operator experience and emotions, making it difficult to guarantee the consistency and accuracy of testing. Moreover, the applicable PCB board specifications are relatively limited, failing to flexibly adapt to diverse products, exhibiting significant limitations. Therefore, we propose a rapid insertion and removal connection device for PCB boards used in display screen testing. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a quick-connect and disconnect device for PCB boards used in display screen testing, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a quick plug-in / plug-out connection device for PCB boards used in display screen testing, comprising a test platform, a plug-in / plug-out sliding component, an electric clamping component, a motor, and an adjustable test plug-in / plug-out port. The test platform has a plug-in / plug-out sliding component on its top, which is slidably connected to the top of the test platform. A motor is located on the side wall of the test platform, and the motor's threaded output shaft passes into the interior of the test platform and is connected to the bottom of the plug-in / plug-out sliding component. Two symmetrically distributed electric clamping components are fixedly connected to the top of the plug-in / plug-out sliding component by adapter screws. An adjustable test plug-in / plug-out port is located on the top side wall of the test platform, which is snap-fitted into the interior of the test platform.

[0008] Preferably, the test bench has a sliding cavity inside, and the top end of the sliding cavity has a rectangular opening structure. The top of the test bench has two guide grooves that are symmetrically distributed on both sides of the sliding cavity. The side wall of the test bench has a connecting plate, and the four corners of the connecting plate have connecting holes for fixed connection with the motor. The center of the end face of the connecting plate has a mating hole for cooperating with the threaded output shaft of the motor. The top side wall of the test bench has a test plate, and the test plate has a fixing cavity inside. The fixing cavity has an adjustable test plug-in corresponding to the snap-fit. The side wall of the fixing cavity has a set of equidistant adjustment grooves. The fixing cavity has a wire harness groove inside.

[0009] Preferably, the bottom center of the plug-in sliding member is provided with a slider, which is slidably connected to the inside of the sliding cavity, and the inside of the slider is provided with a threaded bushing, which is slidably connected to the motor threaded output shaft. The bottom of the plug-in sliding member is provided with guide sliders on both sides of the slider in an axisymmetrical arrangement, and the guide sliders are slidably connected to the guide grooves.

[0010] Preferably, the top two opposite sides of the plug-in sliding member are provided with two connecting plates two that are symmetrically distributed. The four corners of the connecting plates two are fixedly connected to the electric clamping member by adapter screws. Three support blocks are provided between the two connecting plates two that are equidistantly distributed. The top of the support blocks is provided with a set of fixing holes that are equidistantly distributed.

[0011] Preferably, the electric clamping component has a connecting plate at the bottom, and the four corners of the connecting plate are fixedly connected to the connecting plate 2 by adapter screws, and the top push rod shaft end of the electric clamping component has a clamping plate.

[0012] Preferably, the adjustable test plug-in port has two symmetrically distributed locking blocks on the inner side of the test board. The locking blocks are engaged with the adjustment slot. The side wall of the adjustable test plug-in port has a wire on the top of the locking block. The wire passes through the wire harness slot. The adjustable test plug-in port has a plug-in port on the side away from the wire.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a quick plug-in connection device for PCB boards used in display screen testing, which has the following advantages:

[0015] 1. This PCB board quick-plug connection device for display testing significantly improves testing efficiency. The device uses a motor-driven plug-in slider for automated plug-in operation, eliminating the traditional manual plug-in method and greatly shortening the connection time between the PCB board and the testing device. At the same time, the electric clamping component can quickly and stably fix the PCB board, reducing the time consumption of manual fixing, making the testing process more compact and efficient. It can realize rapid and continuous testing of PCB boards, meet the urgent need for testing efficiency in the mass production of displays, and effectively accelerate the overall production progress.

[0016] 2. This display screen testing PCB board quick-plug connection device enhances the device's adaptability. Through the adjustable test plug-in port design, the matching position of the locking block and adjustment slot can be flexibly adjusted according to the interface position of different PCB board specifications, achieving precise adjustment of the plug-in port position. The fixing hole on the top of the support block, in conjunction with the pin, can adapt to PCB boards of different sizes, ensuring stable fixation for both standard and smaller boards. This design significantly improves the device's adaptability to diverse PCB boards, eliminating the need for frequent equipment replacements, reducing enterprise production costs, and increasing equipment utilization and economic benefits. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the quick-plug connection device for the PCB board used in the display screen testing of this utility model.

[0018] Figure 2 This is a cross-sectional schematic diagram of the quick-plug connection device for the PCB board used in the display screen testing of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the test platform of this utility model;

[0020] Figure 4 This is a schematic diagram of the plug-in sliding component of this utility model;

[0021] Figure 5 This is a schematic diagram of the electric clamping component of this utility model;

[0022] Figure 6 This is a schematic diagram of the adjustable test plug-in port of this utility model.

[0023] In the diagram: 1. Test stand; 2. Plug-in sliding component; 3. Electric clamping component; 4. Motor; 5. Adjustable test plug-in port; 6. Sliding cavity; 7. Guide groove; 8. Connecting plate one; 9. Test plate; 10. Fixed cavity; 11. Adjustment groove; 12. Wire harness groove; 13. Slider; 14. Threaded bushing; 15. Guide slider; 16. Connecting plate two; 17. Support block; 18. Fixing hole; 19. Connecting plate; 20. Clamping plate; 21. Locking block; 22. Wire; 23. Plug-in port. 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 1-6 A quick-connect / remove device for PCB boards used in display screen testing includes a test platform 1, a sliding member 2, an electric clamping member 3, a motor 4, and an adjustable test port 5. The test platform 1 has a sliding member 2 on its top, which slides and engages with the top of the test platform 1. The test platform 1 has a motor 4 on its side wall, with its threaded output shaft inserted into the test platform 1 and engaging with the bottom of the sliding member 2. Two symmetrically distributed electric clamping members 3 are fixedly connected to the top of the sliding member 2 using adapter screws. The top side wall is equipped with an adjustable test plug-in port 5, which is matched with the internal snap-fit ​​of the test bench 1. After determining the size of the PCB board to be tested and the position of the plug-in port, the position of the adjustable test plug-in port 5 is reasonably changed to make the plug-in process smooth and unobstructed. The PCB board to be tested is placed on top of the plug-in sliding member 2, and the electric clamping members 3 on both sides are activated to clamp the PCB board to be tested. The motor 4 drives the plug-in sliding member 2 to move axially, so that the PCB board to be tested can be plugged in and connected to the corresponding adjustable test plug-in port 5, which facilitates subsequent testing.

[0026] Furthermore, the test platform 1 has a sliding cavity 6 inside, and the top end of the sliding cavity 6 has a rectangular opening structure. The top of the test platform 1 has two guide grooves 7 that are symmetrically distributed on both sides of the sliding cavity 6. The side wall of the test platform 1 has a connecting plate 8. The four corners of the connecting plate 8 have connecting holes that are fixedly connected to the motor 4. The center of the end face of the connecting plate 8 has a mating hole that mates with the threaded output shaft of the motor 4. The top side wall of the test platform 1 has a test plate 9. The test plate 9 has a fixing cavity 10 inside. The fixing cavity 10 has an adjustable test plug-in port 5 that is snapped into. The side wall of the fixing cavity 10 has a set of equal-distance adjustment grooves 11. The fixing cavity 10 has a wire harness groove 12 inside. The test platform 1 provides support for the overall assembly.

[0027] Furthermore, the bottom center of the insertion / removal slider 2 is provided with a slider 13, which is slidably connected to the inside of the slide cavity 6. The slider 13 is provided with a threaded bushing 14, which is slidably connected to the threaded output shaft of the motor 4. The bottom of the insertion / removal slider 2 is provided with guide sliders 15 symmetrically distributed on both sides of the slider 13. The guide sliders 15 are slidably connected to the guide groove 7. The threaded output shaft of the motor 4 drives the insertion / removal slider 2 to move axially through the threaded bushing 14. The sliding connection between the guide sliders 15 and the guide groove 7 effectively ensures the smoothness of the movement of the insertion / removal slider 2, prevents deflection, ensures the overall insertion / removal accuracy, and ensures smooth insertion / removal.

[0028] Furthermore, the top two opposite sides of the plug-in sliding member 2 are provided with two connecting plates 16 arranged symmetrically. The four corners of the connecting plates 16 are fixedly connected to the electric clamping member 3 by adapter screws. There are three support blocks 17 arranged at equal intervals between the two connecting plates 16. The top of the support blocks 17 is provided with a set of fixing holes 18 arranged at equal intervals. The connecting plates 16 fix the electric clamping member 3, while the support blocks 17 support the PCB board to be tested. At the same time, for some smaller PCB boards to be tested, they are connected to the fixing holes 18 by pins, which is convenient for matching various sizes of boards and has high practical performance.

[0029] Furthermore, the electric clamping component 3 has a connecting plate 19 at the bottom, and the four corners of the connecting plate 19 are fixedly connected to the connecting plate 16 by adapter screws. The top push rod shaft of the electric clamping component 3 is provided with a clamping plate 20, and the electric clamping component 3 is fixed to the two opposite sides of the PCB board to be tested by the clamping plate 20.

[0030] Furthermore, the adjustable test plug-in port 5 has two symmetrically distributed locking blocks 21 on the inner side of the test board 9. The locking blocks 21 are engaged with the adjustment slot 11. The side wall of the adjustable test plug-in port 5 is provided with a wire 22 corresponding to the top of the locking block 21. The wire 22 passes through the wire harness slot 12. The adjustable test plug-in port 5 has a plug-in port 23 on the side away from the wire 22. By adjusting the engagement position of the locking block 21 and the adjustment slot 11, precise plug-in connection can be achieved for different PCB boards to be tested.

[0031] Structural Description:

[0032] Test bench 1: Test bench 1 is the basic support structure of the entire device, providing a mounting carrier for the top components. It has a sliding cavity 6 and a guide groove 7 inside, and the side wall is used to install the motor 4, which plays a stable supporting role for the overall components.

[0033] Plug-in slider 2: Plug-in slider 2 is the core component for realizing the plug-in and plug-out of PCB board. The bottom is equipped with slider 13 that cooperates with slide cavity 6, guide slider 15 that cooperates with guide groove 7, and the top is fixed with electric clamping component 3 through connecting plate 2 16, which can move along the axial direction.

[0034] Electric clamping component 3: Electric clamping component 3 is a PCB board fixing device. The bottom is connected to the second connecting plate 16 via the connecting plate 19, and the top push rod shaft end is equipped with a clamping plate 20. After starting, it can quickly and stably clamp the two opposite sides of the PCB board.

[0035] Motor 4: Motor 4 is the power source of the device. It is installed on the side wall of the test bench 1. Its threaded output shaft passes through the connecting plate 8 and cooperates with the threaded bushing 14 at the bottom of the plug-in sliding part 2 to provide driving power for PCB board plugging and unplugging.

[0036] Adjustable test plug-in 5: The adjustable test plug-in 5 is used to connect the PCB board to the testing equipment. The position is adjusted by the cooperation of the locking block 21 and the adjustment slot 11. One side is provided with a wire 22 to connect to the testing equipment, and the other side is provided with a plug-in 23 for the PCB board to be inserted.

[0037] Sliding cavity 6: The sliding cavity 6 is located inside the test bench 1 and has a rectangular opening at the top. It slides and engages with the slider 13 at the bottom of the insertion and removal sliding member 2, providing guidance and space for the axial movement of the insertion and removal sliding member 2.

[0038] Guide groove 7: The guide groove 7 is located on both sides of the top of the test bench 1. It cooperates with the guide slider 15 at the bottom of the insertion and removal slider 2 to limit the movement trajectory of the insertion and removal slider 2, ensure its smooth movement, and prevent deflection.

[0039] Connecting plate 18: Connecting plate 18 is installed on the side wall of test bench 1. It has connecting holes at the four corners for fixing motor 4, and a hole at the center of the end face for mating with the threaded output shaft of motor 4. It is used to fix motor 4 and guide the direction of its output shaft.

[0040] Test board 9: Test board 9 is located on the top side wall of test bench 1. A fixing cavity 10 is opened inside for snapping into the adjustable test plug-in port 5. An adjustment groove 11 is provided on the side wall to assist in adjusting the position of the plug-in port and provide an electrical connection channel.

[0041] Fixed cavity 10: The fixed cavity 10 is located inside the test plate 9 and is used to snap the adjustable test plug-in port 5, the adjustment groove 11 on the side wall and the wire harness groove 12 inside, so as to facilitate the adjustment of the plug-in port position and the arrangement of the wires 22.

[0042] Adjustment groove 11: The adjustment groove 11 is a set of equally spaced grooves opened on the side wall of the fixed cavity 10. It cooperates with the locking block 21 of the adjustable test plug-in port 5 to achieve precise adjustment of the plug-in port position.

[0043] Wire harness slot 12: The wire harness slot 12 is opened inside the fixing cavity 10 to provide a routing channel for the wires 22, ensuring the orderliness and safety of electrical connections and avoiding messy wiring;

[0044] Slider 13: Slider 13 is located at the bottom center of the plug-in sliding member 2, and slides in the internal sliding cavity 6 of the test bench 1. It is also provided with a threaded bushing 14 inside, which cooperates with the threaded output shaft of the motor 4 to achieve axial movement.

[0045] Threaded bushing 14: The threaded bushing 14 is embedded inside the slider 13 and is threadedly engaged with the threaded output shaft of the motor 4 to convert the rotational motion of the motor 4 into the axial linear motion of the sliding member 2.

[0046] Guide slider 15: The guide slider 15 is installed on both sides of the bottom of the insertion and removal slider 2 and slides in cooperation with the guide groove 7 on the top of the test bench 1 to ensure the stability and accuracy of the insertion and removal slider 2 when it moves.

[0047] Connecting plate 2 16: Connecting plate 2 16 is located on both sides of the top of the plug-in sliding member 2. The electric clamping member 3 is fixed at the four corners by the adapter screws. At the same time, it cooperates with the support block 17 to provide support and fixation structure for the PCB board.

[0048] Support block 17: The support block 17 is located between the two connecting plates 16, and has a fixing hole 18 on the top for supporting the PCB board. It can be used with the pin to fix small-sized PCB boards, thus enhancing adaptability.

[0049] Fixing holes 18: Fixing holes 18 are equidistant holes opened on the top of the support block 17. They can be used with pins to fix PCB boards of different sizes, improving the device's adaptability to a variety of boards.

[0050] Connecting plate 19: The connecting plate 19 is located at the bottom of the electric clamping component 3. Its four corners are connected to the connecting plate 16 by adapter screws, which serves to fix the electric clamping component 3 and ensure its stable operation.

[0051] Clamping plate 20: The clamping plate 20 is installed on the top push rod shaft end of the electric clamping component 3. When the electric clamping component 3 is started, the clamping plate 20 clamps the two opposite sides of the PCB board to achieve stable fixation.

[0052] Locking block 21: Locking block 21 is a protruding structure on the inner side of the adjustable test plug-in port 5, which engages with the adjustment groove 11 on the side wall of the fixed cavity 10 of the test plate 9 to achieve flexible adjustment of the plug-in port position.

[0053] Wire 22: Wire 22 connects the adjustable test plug-in 5 to the testing equipment. It is arranged through the wire harness slot 12 and is responsible for transmitting test signals to ensure the electrical connection between the PCB board and the testing equipment.

[0054] Plug-in port 23: Plug-in port 23 is located on the side of the adjustable test plug-in port 5 away from the wire 22. It is the interface for inserting the PCB board and matches the connection end of the PCB board to realize quick plug-in connection.

[0055] Working Principle: The quick-connect device for testing the PCB board of the display screen is installed correctly according to the diagram. Based on the test bench 1, the device supports the coordinated operation of all core components. When testing the PCB board, firstly, based on the size and interface position of the PCB board to be tested, the installation position of the adjustable test plug-in port 5 on the test bench 1 is precisely determined by adjusting the engagement position between the locking block 21 on the adjustable test plug-in port 5 and the adjusting groove 11 on the side wall of the fixing cavity 10 of the test board 9. This ensures smooth subsequent plugging and unplugging. The wire 22 passes through the wire harness groove 12 to achieve electrical connection. Then, the PCB board to be tested is placed on top of the plug-in sliding member 2. The connecting plates 19 at the bottom of the two electric clamping members 3 are fixed to the connecting plates 16 at the top of the plug-in sliding member 2 using matching screws. The electric clamping member 3 is activated, and the clamping plate 20 at the top push rod shaft firmly fixes the two opposite sides of the PCB board. At the same time, the support block 17 provides support for the PCB board. Small-sized PCB boards can also be connected to the fixing holes 18 on the top of the support block 17 via pins to enhance the fixing effect. After fixing, the motor 4 on the side wall of the test bench 1 starts to work. The threaded output shaft of the motor 4 passes through the mating hole in the center of the connecting plate 8 and is threadedly engaged with the threaded bushing 14 in the bottom slider 13 of the pull-out slider 2. When the motor 4 rotates, the threaded output shaft drives the pull-out slider 2 to move axially through the threaded bushing 14. During this process, the guide sliders 15 on both sides of the bottom of the pull-out slider 2 are tightly engaged with the guide groove 7 on the top of the test bench 1, effectively limiting the movement trajectory of the pull-out slider 2, preventing it from deflecting, and ensuring the smoothness and accuracy of the movement. As the pull-out slider 2 moves, the PCB board fixed on it gradually approaches and inserts into the pull-out port 23 of the adjustable test pull-out port 5, completing the connection with the testing equipment, and then carrying out subsequent testing work. After the test is completed, the motor 4 rotates in the reverse direction, driving the pull-out slider 2 to move in the reverse direction, realizing the rapid pull-out of the PCB board.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-connect and disconnect device for PCB boards used in display screen testing, comprising a test platform (1), a plug-in / plug-out slider (2), an electric clamping component (3), a motor (4), and an adjustable test plug-in / plug-out port (5), characterized in that: The test bench (1) is provided with a plug-in sliding member (2) at the top, which is slidably connected to the top of the test bench (1). The test bench (1) is provided with a motor (4) on the side wall. The threaded output shaft of the motor (4) is inserted into the interior of the test bench (1) and is connected to the bottom of the plug-in sliding member (2). The top of the plug-in sliding member (2) is fixedly connected with two axially symmetrically distributed electric clamping members (3) by an adapter screw. The top side wall of the test bench (1) is provided with an adjustable test plug-in port (5), which is snap-fitted into the interior of the test bench (1).

2. The quick-connect and disconnect device for PCB board used in display screen testing according to claim 1, characterized in that: The test bench (1) has a sliding cavity (6) inside, and the top end of the sliding cavity (6) is a rectangular opening structure. The top of the test bench (1) has two guide grooves (7) that are symmetrically distributed on both sides of the sliding cavity (6). The side wall of the test bench (1) has a connecting plate (8). The four corners of the connecting plate (8) have connecting holes that are fixedly connected to the motor (4). The center of the end face of the connecting plate (8) has a mating hole that mates with the threaded output shaft of the motor (4). The top side wall of the test bench (1) has a test plate (9). The test plate (9) has a fixed cavity (10) inside. The fixed cavity (10) has a corresponding adjustable test plug-in port (5). The side wall of the fixed cavity (10) has a set of equal-distance adjustment grooves (11). The fixed cavity (10) has a wire harness groove (12).

3. The quick-connect and disconnect device for PCB board used in display screen testing according to claim 1, characterized in that: The bottom center of the plug-in sliding member (2) is provided with a slider (13), which is slidably connected to the inside of the sliding cavity (6). The inside of the slider (13) is provided with a threaded bushing (14), which is slidably connected to the threaded output shaft of the motor (4). The bottom of the plug-in sliding member (2) is provided with guide sliders (15) on both sides of the slider (13) in an axially symmetrical manner, which are slidably connected to the guide groove (7).

4. The quick-connect and disconnect device for PCB board used in display screen testing according to claim 3, characterized in that: The top two opposite sides of the plug-in sliding member (2) are provided with two connecting plates (16) that are symmetrically distributed. The four corners of the connecting plates (16) are fixedly connected to the electric clamping member (3) by the adapter screws. There are three support blocks (17) that are equidistantly distributed between the two connecting plates (16). The top of the support blocks (17) is provided with a set of fixing holes (18) that are equidistantly distributed.

5. The quick-connect and disconnect device for PCB board used in display screen testing according to claim 4, characterized in that: The electric clamping component (3) has a connecting plate (19) at the bottom. The four corners of the connecting plate (19) are fixedly connected to the connecting plate two (16) by adapter screws, and the top push rod shaft of the electric clamping component (3) has a clamping plate (20).

6. The quick-connect and disconnect device for PCB board used in display screen testing according to claim 2, characterized in that: The adjustable test plug-in port (5) has two symmetrically distributed locking blocks (21) on the inner side of the test board (9). The locking blocks (21) are engaged with the adjustment groove (11). The side wall of the adjustable test plug-in port (5) is provided with a wire (22) on the top of the locking block (21). The wire (22) passes through the wire harness groove (12). The adjustable test plug-in port (5) has a plug-in port (23) on the side away from the wire (22).