Universal test tool for power-on calibration

Abstract

The utility model discloses a universal test tool for power-on calibration, and relates to the technical field of test tools, the universal test tool comprises a test bench, the test bench is provided with a detection module and a pressing plate, the test bench is slidably connected with a carrier plate, the carrier plate is detachably connected with a mounting plate, the mounting plate is provided with a plurality of mounting areas for mounting to-be-tested pieces, and the mounting areas are arranged on the test bench. The carrier plate is provided with a through hole for a pin of a to-be-tested piece to pass through, the carrier plate is located between the pressing plate and the detection module, and the test board is connected with a driving piece used for driving the pressing plate to slide in the direction close to or away from the carrier plate. According to the application, after the to-be-tested piece on the test bench is tested, the mounting plate on the test bench is taken down and replaced by the mounting plate on which the to-be-tested piece is mounted, so that the time of mounting the to-be-tested piece on the carrier plate is saved, and the efficiency of testing the whole to-be-tested piece is improved.

Description

Technical Field

[0001] The present application relates to the technical field of test fixtures, and in particular to a universal test fixture for power-on calibration. Background Art

[0002] A universal test fixture for power-on calibration is a device used to test the power-on performance of electronic products. It typically includes components for securing the product, probes, power-on components, and a drive mechanism. This fixture is designed to improve test efficiency, reduce manual labor, ensure test accuracy, and reduce costs.

[0003] like Figure 1 As shown, the DUT 1 includes a circuit board 11, a connecting plate 12 fixedly connected to the circuit board 11, two pins 13 fixedly connected to the connecting plate 12, and a power button 14 fixedly connected to the circuit board 11. The circuit board 11 has two positioning slots 111 defined therein. Traditional power-on calibration equipment first places the DUT on a workstation, then manually controls a push-down member to press the DUT on the workstation. The power supply is then activated for power and calibration. This allows only one or two DUTs to be tested at a time, resulting in low overall DUT testing efficiency and potential for improvement. Utility Model Content

[0004] The purpose of this application is to provide a universal test fixture for power-on calibration in order to improve the overall testing efficiency of the device under test.

[0005] A universal test fixture for power-on calibration provided in the present application adopts the following technical solution: it includes a test bench, the test bench is provided with a detection module and a pressing plate, the test bench is slidably connected to a carrier plate, the carrier plate is detachably connected to a mounting plate, the mounting plate is provided with a plurality of mounting areas for mounting the test piece, the carrier plate is provided with through holes for the pins of the test piece to pass through, the carrier plate is located between the pressing plate and the detection module, and the test bench is connected to a driving member for driving the pressing plate to slide toward or away from the carrier plate.

[0006] By adopting the above technical solution, while the inspection module is testing the DUT on the test bench, the untested DUT is mounted on another mounting plate. After the DUT on the test bench has been tested, the mounting plate on the test bench is removed and replaced with the mounting plate with the DUT mounted on it. This saves the time of mounting the DUT on the carrier plate, thereby improving the overall DUT testing efficiency.

[0007] Optionally, the mounting plate includes a base plate and a top plate connected to the base plate, and the mounting area includes a clearance hole provided on the top plate and a limiting hole provided on the base plate, the clearance hole is for the circuit board, the connecting plate and the pins to pass through, and the limiting hole is for the pins to pass through.

[0008] By adopting the above technical solution, when the DUT is mounted on the mounting plate, the pins pass through the limiting holes, the bottom plate supports the connecting plate and circuit board, and the inner wall of the limiting hole restricts the horizontal movement of the circuit board, thereby improving the stability of the DUT mounted on the mounting plate. The driving member drives the pressing plate to slide toward the mounting plate. The pressing plate contacts the DUT and drives the mounting plate to slide toward the detection module, allowing the pins to be inserted into the detection module, which then tests the DUT.

[0009] Optionally, the top plate is slidably connected to a plurality of active rods for abutting against the power-on button, the plurality of active rods correspond one-to-one to the plurality of the clearance holes, and the active rods are connected to the top plate via elastic members.

[0010] By employing this technical solution, when the active lever is pressed, it slides toward the power button. The elastic member, under pressure, deforms elastically and maintains its tendency to return to its original position until the active lever contacts the power button, energizing the DUT and the detection module. After the DUT is tested, the active lever is released, causing the elastic member to return to its original position, allowing for the next test to proceed, improving work efficiency.

[0011] Optionally, the inner wall of the clearance hole is provided with a positioning block for cooperating with the positioning groove of the circuit board.

[0012] By adopting the above technical solution, the positioning block is inserted into the positioning groove, and the outer surface of the positioning block fits the inner wall of the positioning groove. The positioning block limits the rotation of the circuit board, so that the active rod and the power button remain corresponding.

[0013] Optionally, the carrier plate is provided with a limiting groove for the bottom plate to be snapped into, and the limiting groove is communicated with the through hole.

[0014] By adopting the above technical solution, the base plate is inserted into the limiting groove, and the outer surface of the base plate fits with the inner wall of the limiting groove. The inner wall of the limiting groove limits the horizontal movement of the base plate, thereby improving the stability of the base plate installed on the carrier plate.

[0015] Optionally, the base plate is connected to an active plate, the carrier plate is provided with an active slot for the active plate to be snapped into, the active slot is communicated with the limiting slot, and one end of the active plate away from the base plate protrudes out of the active slot.

[0016] By adopting the above technical solution, one end of the active plate protrudes from the active slot. The staff only needs to move the end of the active plate protruding from the active slot to drive the bottom plate out of the limiting slot, thereby improving the disassembly efficiency of the mounting plate.

[0017] Optionally, the carrier plate includes a first plate body and a second plate body detachably connected to the first plate body, the first plate body and the second plate body are connected by a locking piece, the through hole is set on the first plate body, and the second plate body and the first plate body enclose the limiting groove and the active groove.

[0018] By adopting the above technical solution, the second plate bodies of different sizes can be replaced according to actual needs, thereby enclosing limiting grooves and active grooves of different sizes, which are suitable for base plates and active plates of different sizes.

[0019] Optionally, the carrier plate is provided with a guide column, and the detection module is provided with a guide groove for slidingly cooperating with the guide column.

[0020] By adopting the above technical solution, when the carrier slides along the length direction of the guide column, the sliding cooperation between the guide column and the guide groove plays a guiding and limiting role in the sliding of the carrier, thereby improving the stability of the sliding of the carrier and facilitating the precise insertion of the pins into the detection module.

[0021] Optionally, the test bench is connected to two descending buttons for controlling the start of the driving member, and the two descending buttons are connected in series, and the test bench is connected to an ascending button for controlling the start of the driving member.

[0022] By adopting the above technical solution, only when both hands press the down button at the same time will the driver drive the pressing plate to slide towards the carrier plate, preventing the pressing plate from pressing the hands during the down process. When the up button is pressed, the driver drives the pressing plate to slide away from the carrier plate, making it easier to replace the mounting plate.

[0023] Optionally, a reset component for driving the carrier board to reset is connected between the carrier board and the test bench.

[0024] By adopting the above technical solution, when the pressing plate slides in a direction away from the carrier plate, the reset member drives the carrier plate to reset for the next work, thereby improving work efficiency.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. After the DUT on the test bench is tested, the mounting plate on the test bench is removed and replaced with the mounting plate with the DUT mounted on it. This saves the time of mounting the DUT on the carrier plate, thereby improving the overall testing efficiency of the DUT.

[0027] 2. Only when both hands press the down button at the same time, the driving part will drive the pressing plate to slide towards the carrier plate to prevent the pressing plate from pressing the hands during the descending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the device under test.

[0029] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 3 This is one of the partial structural diagrams of an embodiment of the present application, showing a test bench and a mounting plate.

[0031] Figure 4 This is the second partial structural diagram of an embodiment of the present application, showing a test bench.

[0032] Figure 5 yes Figure 4 Magnified view of area A.

[0033] Figure 6 This is the third partial structural diagram of an embodiment of the present application, showing a mounting plate.

[0034] Figure 7 yes Figure 6 Magnified view of area B.

[0035] Explanation of the accompanying reference numerals: 1. PTFE; 11. Circuit board; 111. Positioning groove; 12. Connecting plate; 13. Pin; 14. Power-on button; 2. Test bench; 21. Detection module; 22. Driving member; 23. Down button; 24. Up button; 3. Calibration resistor; 4. Voltage-stabilized power supply; 5. Carrier board; 51. Guide column; 52. Reset member; 53. First plate body; 54. Second plate body; 55. Locking member; 56. Limiting groove; 57. Active groove; 58. Through hole; 6. Mounting plate; 61. Bottom plate; 611. Active plate; 62. Top plate; 621. Positioning block; 622. Connecting block; 7. Mounting area; 71. Clearance hole; 72. Limiting hole; 8. Pressing plate; 9. Active rod; 91. Elastic member. DETAILED DESCRIPTION

[0036] The following is combined with Figure 2 -Attached Figure 7 This application is described in further detail.

[0037] The embodiment of the present application discloses a universal test fixture for power-on calibration.

[0038] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, it includes a test bench 2, a calibration resistor 3 and a voltage-stabilized power supply 4. The upper surface of the test bench 2 is fixedly connected to a detection module 21, and the calibration resistor 3 and the voltage-stabilized power supply 4 are both connected to the detection module 21 through wires. The upper surface of the test bench 2 is slidably connected to a carrier plate 5. The detection module 21 is located between the test bench 2 and the carrier plate 5. A plurality of guide posts 51 are provided on the side of the carrier plate 5 close to the detection module 21. The detection module 21 is provided with a guide groove for slidingly cooperating with the corresponding guide post 51. Each guide post 51 is sleeved with a reset member 52. The reset member 52 is a spring. The two ends of the reset member 52 are respectively fixedly connected to the side of the detection module 21 and the carrier plate 5 facing each other.

[0039] Combine Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, a mounting plate 6 is detachably connected to the side of the carrier plate 5 facing away from the test bench 2. The mounting plate 6 is provided with several mounting areas 7 for mounting the DUT 1 (the number of mounting areas 7 is selected based on actual needs). A pressure plate 8 is slidably connected to the test bench 2, with the mounting plate 6 positioned between the carrier plate 5 and the pressure plate 8. Two actuators 22 are pneumatic cylinders fixedly connected to the upper surface of the test bench 2 for driving the pressure plate 8 to slide toward or away from the carrier plate 5. The side of the pressure plate 8 closest to the actuators 22 is fixedly connected to the output end of the actuators 22. A controller (not shown in the drawings) is connected to the test bench 2, and the signal output end of the controller is connected to the signal input end of the driving member 22. The test bench 2 is relatively fixedly connected to two descending buttons 23 for controlling the start of the driving member 22. The two descending buttons 23 are connected in series. When the two descending buttons 23 are pressed at the same time, the driving member 22 will drive the pressing plate 8 to slide toward the direction close to the carrier plate 5 to prevent the operator from pinching his hand while using the equipment. The test bench 2 is fixedly connected to an ascending button 24 for controlling the drive of the driving member 22. When the ascending button 24 is pressed, the driving member 22 drives the pressing plate 8 to slide toward the direction away from the carrier plate 5.

[0040] Combine Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the mounting plate 6 includes a bottom plate 61 and a top plate 62 fixedly connected to the bottom plate 61. When the mounting plate 6 is mounted on the carrier plate 5, the top plate 62 is located between the bottom plate 61 and the pressing plate 8. The mounting area 7 includes a clearance hole 71 defined in the top plate 62 and two limiting holes 72 defined in the bottom plate 61. The circuit board 11, the connecting plate 12, and the pins 13 can pass through the clearance hole 71. The limiting holes 72 are for the pins 13 to pass through. Two positioning blocks 621 are fixedly connected to the inner wall of the clearance hole 71, which are designed to engage with the positioning grooves 111 of the circuit board 11. The positioning blocks 621 are integrally formed with the top plate 62. A connecting block 622 is fixedly connected to the side of the top plate 62 away from the bottom plate 61. The connecting block 622 is slidably connected to several active rods 9 for abutting against the power button 14 (the number of active rods 9 is the same as the number of clearance holes 71). One active rod 9 corresponds to one clearance hole 71. The connecting block 622 is provided with a sliding hole for slidingly cooperating with the corresponding active rod 9. Each active rod 9 is connected to the connecting block 622 by an elastic member 91. The elastic member 91 is a spring. One end of the elastic member 91 is fixedly connected to the active rod 9, and the other end is fixedly connected to the connecting block 622.

[0041] Combine Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the carrier plate 5 includes a first plate body 53 and a second plate body 54 detachably connected to the first plate body 53. The first plate body 53 and the second plate body 54 are connected by a plurality of locking members 55, which are bolts. The first plate body 53 is located between the second plate body 54 and the detection module 21. An active plate 611 is provided on one side of the base plate 61. The active plate 611 and the base plate 61 are integrally formed. The first plate body 53 and the second plate body 54 enclose a limiting groove 56 for the base plate 61 to be inserted into and an active groove 57 for the active plate 611 to be inserted into. The active groove 57 is connected to the limiting groove 56. The carrier plate 5 is provided with a plurality of through holes 58 for the pins 13 to pass through. The through holes 58 are connected to the limiting groove 56. When the base plate 61 is inserted into the limiting groove 56, the end of the active plate 611 away from the base plate 61 protrudes out of the active groove 57.

[0042] The implementation principle of a universal test fixture for power-on calibration in the embodiment of the present application is as follows:

[0043] First, install multiple DUTs 1 on the mounting plate 6, then place the mounting plate 6 with the DUTs 1 installed on the carrier plate 5, with the pins 13 passing through the corresponding through-holes 58. Simultaneously press the two down buttons 23 with both hands, and the driver 22 drives the pressing plate 8 to slide toward the mounting plate 6. The pressing plate 8 abuts against the mounting plate 6 and drives the mounting plate 6 and the carrier plate 5 to slide toward the detection module 21, so that the pins 13 are inserted into the detection module 21. While the detection module 21 is detecting the DUT 1, the DUT 1 can be installed on another mounting plate 6 while waiting, saving time. After the DUT 1 on the detection module 21 has been inspected, press the up button 24, and the driver 22 drives the pressing plate 8 to slide away from the mounting plate 6. The reset member 52 resets the carrier plate 5 and the mounting plate 6, so that the pins 13 are disengaged from the detection module 21, and the carrier plate 5 is reset for the next work, improving work efficiency.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A universal test fixture for power-on calibration, characterized by: The invention comprises a test bench (2), wherein the test bench (2) is provided with a detection module (21) and a pressing plate (8), the test bench (2) is slidably connected to a carrier plate (5), the carrier plate (5) is detachably connected to a mounting plate (6), the mounting plate (6) is provided with a plurality of mounting areas (7) for mounting a test piece (1), the carrier plate (5) is provided with through holes (58) for the pins (13) of the test piece (1) to pass through, the carrier plate (5) is located between the pressing plate (8) and the detection module (21), and the test bench (2) is connected to a driving member (22) for driving the pressing plate (8) to slide in a direction close to or away from the carrier plate (5).

2. The universal test fixture for power-on calibration according to claim 1, characterized in that: The mounting plate (6) comprises a bottom plate (61) and a top plate (62) connected to the bottom plate (61); the mounting area (7) comprises a clearance hole (71) provided on the top plate (62) and a limiting hole (72) provided on the bottom plate (61); the clearance hole (71) is used for the circuit board (11), the connecting plate (12) and the pin (13) to pass through; and the limiting hole (72) is used for the pin (13) to pass through.

3. The universal test fixture for power-on calibration according to claim 2, characterized in that: The top plate (62) is slidably connected to a plurality of active rods (9) for contacting the power button (14), the plurality of active rods (9) corresponding to the plurality of the clearance holes (71) one by one, and the active rods (9) and the top plate (62) are connected via an elastic member (91).

4. The universal test fixture for power-on calibration according to claim 2, characterized in that: The inner wall of the clearance hole (71) is provided with a positioning block (621) for cooperating with the positioning groove (111) of the circuit board (11).

5. The universal test fixture for power-on calibration according to claim 2, characterized in that: The carrier plate (5) is provided with a limiting groove (56) for the bottom plate (61) to be snapped in, and the limiting groove (56) is communicated with the through hole (58).

6. The universal test fixture for power-on calibration according to claim 5, characterized in that: The base plate (61) is connected to an active plate (611), and the carrier plate (5) is provided with an active groove (57) for the active plate (611) to be snapped into, the active groove (57) is communicated with the limiting groove (56), and one end of the active plate (611) away from the base plate (61) protrudes from the active groove (57).

7. The universal test fixture for power-on calibration according to claim 6, characterized in that: The carrier plate (5) comprises a first plate body (53) and a second plate body (54) detachably connected to the first plate body (53), the first plate body (53) and the second plate body (54) are connected via a locking member (55), the through hole (58) is provided on the first plate body (53), and the second plate body (54) and the first plate body (53) enclose the limiting groove (56) and the active groove (57).

8. The universal test fixture for power-on calibration according to claim 1, characterized in that: The carrier plate (5) is provided with a guide column (51), and the detection module (21) is provided with a guide groove for slidingly cooperating with the guide column (51).

9. The universal test fixture for power-on calibration according to claim 1, characterized in that: The test bench (2) is connected to two descending buttons (23) for controlling the start of the driving member (22), and the two descending buttons (23) are connected in series. The test bench (2) is connected to an ascending button (24) for controlling the start of the driving member (22).

10. The universal test fixture for power-on calibration according to claim 1, characterized in that: A reset member (52) for driving the carrier plate (5) to reset is connected between the carrier plate (5) and the test bench (2).

Images