Electrical testing fixture and electrical testing method

Abstract

The present application relates to an electrical testing jig and an electrical testing method, which relates to the field of electrical technology. The jig comprises a support plate for supporting a substrate and a bracket for supporting the support plate. The support plate and the bracket are hinged, and the rotation axis of the support plate and the bracket passes through the center of the support plate. A tilting assembly is provided between the support plate and the bracket for driving the support plate to rotate along the diagonal of the support plate. A limiting assembly is provided on the support plate for limiting the position of the substrate and aligning the support plate with a probe. The present application has the effect of automatically positioning substrates of different sizes at specific positions on the support plate, facilitating substrate testing and saving time and effort.

Description

Technical Field

[0001] The present application relates to the field of electrical technology, and in particular to an electrical testing fixture and an electrical testing method. Background Art

[0002] During the display panel manufacturing process, electrical testing of the component substrates within the display panel is required. During testing, the probes of the electrical testing fixture contact the contacts on the substrate under test, thereby establishing an electrical connection between the testing equipment and the substrate. The testing equipment then sends a test signal to the substrate under test, verifying the substrate's signal transmission performance and thus completing the electrical test of the substrate under test.

[0003] Currently, when performing electrical testing on a substrate to be tested, an operator is required to hold the substrate to be tested, align the probes of a motor testing fixture with the contacts on the substrate to be tested, and apply pressure to the motor testing fixture to make the probes fit tightly with the contacts on the substrate to be tested. The operator manually aligns and contacts the probes, which is time-consuming and laborious. In addition, the operator's hands may block the substrate, affecting the detection effect. Summary of the Invention

[0004] In order to improve the time-consuming and labor-intensive problem of manually aligning the contacts of the probe and the substrate when inspecting the substrate, the present application provides an electrical inspection fixture and an electrical inspection method.

[0005] The electrical testing fixture provided in this application adopts the following technical solution:

[0006] An electrical testing fixture comprises a support plate for supporting the substrate and a bracket for supporting the support plate, the support plate and the bracket being hinged, the rotation axis of the support plate and the bracket passing through the center of the support plate, a tilting component for driving the support plate to rotate along the diagonal of the support plate is provided between the support plate and the bracket, and a limiting component is provided on the support plate for limiting the substrate and aligning the support plate with the probe.

[0007] By adopting the above technical solution, when inspecting the substrate, the substrate is first placed on the pallet, and the tilting component is used to drive the pallet to rotate along the hinge axis of the pallet, so that the pallet is tilted. At this time, the substrate is relatively displaced between the pallet and the substrate under the action of gravity until the substrate is limited on the pallet by the limiting component. At this time, the substrate is aligned to the relative position of the pallet and the substrate and the probe are relatively aligned; the probe is used to inspect the substrate to avoid using unqualified substrates in the display panel as much as possible. Unqualified substrates will cause the display panel to be unable to be used normally and then increase the loss. Inspecting the substrate before installing it is conducive to reducing the loss.

[0008] In a specific possible implementation scheme, the tilting assembly includes a spring plate, a cam and a first motor, and the spring plate and the first motor are both arranged between the support plate and the bracket, the spring plate is used to support the support plate, the spring plate is arranged on one side of the support plate hinge shaft, and the first motor is arranged on the other side of the support plate hinge shaft, the first motor drives the cam to rotate, and the peripheral wall of the cam abuts against the side wall of the support plate away from the base plate.

[0009] By adopting the above technical solution, when the substrate is placed on the pallet, the first motor is started, the first motor drives the cam to rotate, the cam and the pallet abut against the side wall of the bracket, and the cam pushes one corner of the pallet away from the bracket. At this time, the spring piece is compressed by the pressure of the pallet away from the corner of the cam. At this time, the pallet is tilted, and then the substrate placed on the pallet moves toward the end close to the spring piece under the action of gravity; when the substrate moves and is positioned in the relative position of the pallet, the first motor is started, the first motor drives the cam to rotate, the cam and the pallet abut against the side wall of the bracket, and the pallet moves away from the bracket under the action of the elastic force of the spring piece until the pallet is horizontal. When the pallet is horizontal, the substrate positioned on the pallet is detected by the substrate detection equipment, which is easy to operate and conducive to achieving good detection results.

[0010] In a specific possible implementation scheme, the limiting assembly includes a first limiting plate and a second limiting plate arranged on the support plate, the first limiting plate and the second limiting plate are vertically arranged, and the first limiting plate and the second limiting plate enclose to form a limiting space for limiting the substrate.

[0011] By adopting the above technical solution, when the substrate slides on the pallet, one of the side walls of the substrate and the first limiting plate abut against the side wall of the limiting space, and the other side wall of the substrate and the second limiting plate abut against the side wall of the limiting space. When the two adjacent side walls of the substrate are both limited in the limiting space, the substrate moves to the detection position of the detection equipment, thereby realizing automatic alignment of the substrate, which is simple, convenient and saves manpower.

[0012] In a specific possible implementation scheme, the support plate is provided with a positioning assembly for clamping and positioning the substrate on the support plate, and the support plate is provided with a receiving groove for accommodating the positioning assembly, and the positioning assembly includes a pressure plate, a sliding column, a first gear, a rack and an electric push rod, and the pressure plate, the sliding column and the first gear are all coaxially fixedly connected, the electric push rod is arranged in the receiving groove, the piston rod of the electric push rod and the first gear are coaxially connected for rotation, the first gear and the rack are meshed, an arc groove and a vertical groove are provided on the peripheral wall of the sliding column, one end of the vertical groove is connected to one end of the arc groove, an insertion rod is provided on the groove wall of the receiving groove, and the insertion rod extends into the vertical groove or the arc groove at one end away from the groove wall of the receiving groove, and a power part is provided in the receiving groove for driving the rack to slide on the groove wall of the receiving groove.

[0013] By adopting the above technical solution, the substrate is positioned on the support plate by using the positioning component provided in the accommodating groove, thereby realizing automatic positioning when the substrate is inspected, facilitating operation, saving time and effort; the positioning component stored in the accommodating groove is used to reduce the obstruction of the positioning component to the sliding of the substrate on the support plate, which is conducive to moving the substrate to the relative position of the support plate, saving time and effort; when positioning the position of the substrate, the electric push rod is started, and the electric push rod drives the first gear, the sliding column and the pressure plate to move in the direction away from the bottom of the accommodating groove. When one end of the insertion rod extends into the arc groove, the pressure plate moves to above the substrate. At this time, the power part is used to drive the rack to slide, the rack drives the first gear to rotate, and the first gear drives the sliding column and the pressure plate to rotate, so that the pressure plate is pressed against the side wall of the substrate away from the support plate, thereby realizing positioning of the substrate.

[0014] In a specific possible implementation manner, a mounting box for accommodating the positioning assembly is provided in the accommodating groove, and a moving member for driving the mounting box to slide along the length direction of the accommodating groove is provided in the accommodating groove.

[0015] By adopting the above technical solution, the sliding member is used to drive the installation box to move on the supporting plate, so that the substrate can be positioned on the supporting plate when testing substrates of different sizes.

[0016] In a specific possible implementation scheme, the movable part includes a sliding block, a second motor and a first screw rod, the sliding block is arranged between the mounting box and the bottom wall of the accommodating groove, one end of the first screw rod is rotatably connected to the groove wall of the accommodating groove, the other end of the first screw rod is threadedly connected to the sliding block in turn and coaxially fixedly connected to the output shaft of the second motor, and the second motor is fixedly connected to the support plate.

[0017] By adopting the above technical solution, when inspecting substrates of different sizes, the installation box needs to be moved to a relative position. At this time, the second motor is started, and the second motor drives the first screw rod to rotate. The first screw rod and the sliding block are threadedly connected, and the sliding block drives the installation box to move along the axial direction of the screw rod, thereby realizing the adjustment of the positioning size of the pressure plate.

[0018] In a specific feasible implementation scheme, both sides of the installation box are provided with a sealing component for sealing the accommodating groove, and the sealing component includes a sealing reel, a sealing sheet and a coil spring, one end of the sealing sheet is wound on the sealing reel, and the other end of the sealing sheet is fixedly connected to the installation box, the sealing reel is rotatably connected to the groove wall of the accommodating groove, one end of the coil spring is fixedly connected to the sealing reel, and the other end of the coil spring is fixedly connected to the groove wall of the accommodating groove.

[0019] By adopting the above technical solution, when the installation box moves in the accommodating groove, the distance between one side of the sealing piece and the groove wall of the accommodating groove increases. At this time, the sealing reel is driven by the sealing piece and rotates relative to the groove wall of the accommodating groove. The coil spring is stretched, and the distance between the other side of the sealing piece and the groove wall of the accommodating groove becomes smaller. At this time, the sealing reel is subjected to the elastic force of the coil spring and rotates relative to the groove wall of the accommodating groove, thereby realizing the winding of the sealing reel and then realizing the blocking of the groove mouth of the accommodating groove, which is beneficial to reduce the impact of the accommodating groove on the sliding of the substrate when the substrate slides on the support plate.

[0020] In a specific embodiment, a level is provided on the support plate.

[0021] By adopting the above technical solution, the level of the support plate supporting the substrate is displayed and corrected using a level meter, which is beneficial to improving the detection accuracy of the substrate and achieving a good detection effect.

[0022] In a specific possible implementation manner, when the pressing plate is received in the receiving groove, the top wall of the pressing plate is flush with the notch of the receiving groove.

[0023] By adopting the above technical solution, the top wall of the pressure plate is flush with the notch of the receiving groove, which reduces the impact of the notch of the receiving groove on the sliding of the substrate when the substrate slides on the supporting plate, and is conducive to achieving a good limiting and positioning effect for the substrate.

[0024] The present application also provides an electrical testing jig and an electrical testing method using the following technical solution: placing the substrate to be tested on the support plate;

[0025] The tilting assembly is activated, the support plate is tilted, and the substrate to be inspected moves toward the lowest point of the tilted support plate under the action of gravity;

[0026] Using the limiting assembly to limit the position of the substrate to be inspected so that the substrate to be inspected and the probe are aligned;

[0027] The probe is used to detect the substrate positioned on the support plate.

[0028] By adopting the above technical solution, when inspecting the substrate, the tilting component and the limit component are used to move the substrate to the position to be inspected, and then the positioning component is used to position the substrate so that the substrate and the probe are aligned, achieving good inspection results and automatic alignment, saving time and effort.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. When inspecting the substrate, first place the substrate on the pallet, and use the tilting assembly to drive the pallet to rotate along the hinge axis of the pallet, so that the pallet is tilted. At this time, the substrate is relatively displaced from the pallet under the action of gravity until the substrate is limited on the pallet by the limiting assembly. At this time, the effect of aligning the substrate with the relative position of the pallet is achieved; finally, the positioning assembly provided in the receiving groove is used to position the substrate on the pallet, thereby realizing automatic positioning when inspecting the substrate, facilitating operation, saving time and effort; using the positioning assembly housed in the receiving groove, the obstruction of the positioning assembly to the sliding of the substrate on the pallet is reduced, which is conducive to moving the substrate to the relative position of the pallet, saving time and effort;

[0031] 2. When positioning the substrate, start the electric push rod, which drives the first gear, the slide column and the pressure plate to move away from the bottom of the accommodating groove. When one end of the rod extends into the arc groove, the pressure plate moves above the substrate. At this time, the power part drives the rack to slide, and the rack drives the first gear to rotate. The first gear drives the slide column and the pressure plate to rotate, so that the pressure plate is pressed against the side wall of the substrate away from the support plate, thereby realizing the positioning of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of an electrical testing fixture in an embodiment of the present application.

[0033] Figure 2 This is a schematic diagram of the overall structure of the tilting assembly in the embodiment of the present application.

[0034] Figure 3 for Figure 1 Cross-sectional view along the AA plane.

[0035] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0036] Figure 5This is a schematic diagram of the overall structure of the positioning component in the embodiment of the present application.

[0037] Figure 6 This is a diagram used to illustrate the state of the pressure plate when no substrate is placed in the embodiment of the present application.

[0038] Figure 7 It is a schematic diagram for reflecting the overall structure of the plugging component.

[0039] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0040] Explanation of the accompanying symbols: 1. bracket; 101. bracket; 102. mounting plate; 2. supporting plate; 3. hinge seat; 4. tilting assembly; 41. spring; 42. cam; 43. first motor; 5. limiting assembly; 51. first limiting plate; 52. second limiting plate; 6. positioning device; 7. positioning assembly; 71. pressure plate; 72. slide column; 73. first gear; 74. rack; 75. electric push rod; 8. sliding member; 81. sliding block; 82. second motor; 83. first 1. A screw; 9. Receiving groove; 10. Groove; 11. Level; 12. Limit space; 13. Mounting box; 14. Through groove; 15. Dovetail groove; 16. Dovetail slide rail; 17. Arc groove; 18. Vertical groove; 19. Insert rod; 20. Power part; 201. Second screw; 202. Driving gear; 203. Driven gear; 204. Third motor; 21. Sealing assembly; 211. Sealing reel; 212. Sealing piece; 213. Coil spring; 22. Blocking piece; 23. Base plate. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The present application discloses an electrical testing fixture and an electrical testing method. Figure 1 The electrical testing fixture includes a pallet 2 and a bracket 1. The pallet 2 is a square plate with a square cross-section. The bracket 1 includes a bracket 101 and a mounting plate 102 for placing the pallet 2. The bracket 101 is placed on the ground and is used to support the mounting plate 102. The pallet 2 and the mounting plate 102 are hinged away from the top wall of the bracket 101. Two groups of hinge seats 3 are provided on the bottom wall of the pallet 2 facing the mounting plate 102. The two groups of hinge seats 3 are arranged at two opposite corners of the pallet 2. The hinge seats 3 and the inner corners of the bottom wall of the pallet 2 facing the mounting plate 102 correspond one to one. The hinge axis of the pallet 2 is parallel to the diagonal of the pallet 2.

[0043] The axis of the hinge shaft of the pallet 2 is parallel to the diagonal of the pallet 2. A tilting component 4 is provided between the mounting plate 102 and the pallet 2. The tilting component 4 is used to drive the pallet 2 to rotate along the hinge axis. A limiting component 5 is fixedly connected to the pallet 2 for limiting the substrate 23 placed on the pallet 2. Positioning devices 6 for clamping and positioning the substrate 23 placed on the pallet 2 are provided on both sides of the diagonal of the pallet 2 perpendicular to the rotation axis of the pallet 2. Each group of positioning devices 6 includes two groups of positioning components 7. Two receiving grooves 9 for accommodating the positioning devices 6 are provided on the pallet 2. The two receiving grooves 9 are symmetrically arranged along the diagonal of the pallet 2 perpendicular to the rotation axis of the pallet 2.

[0044] When inspecting the substrate 23, first place the substrate 23 on the support plate 2, and use the tilting component 4 to drive the support plate 2 to rotate along the hinge axis of the support plate 2, so that the support plate 2 is tilted. At this time, the substrate 23 is relatively displaced between the support plate 2 under the action of gravity until the substrate 23 is limited on the support plate 2 by the limiting component 5. At this time, the effect of aligning the substrate 23 with the relative position of the support plate 2 is achieved; finally, the positioning component 7 is used to clamp and position the substrate 23 on the support plate 2, thereby realizing automatic positioning before inspecting the substrate 23, facilitating operation, saving time and effort, and avoiding shaking of the substrate 23 when using the probe to inspect the substrate 23, which is conducive to achieving good inspection results; using the positioning component 7 housed in the accommodating groove 9, the obstruction of the positioning component 7 to the sliding of the substrate 23 is reduced, which is conducive to moving the substrate 23 to the relative position of the support plate 2, saving time and effort.

[0045] Reference Figure 1 and Figure 2 The tilting assembly 4 includes a spring piece 41, a cam 42 and a first motor 43. The first motor 43 is fixedly connected to the mounting plate 102 toward the top wall of the support plate 2. The output shaft of the cam 42 and the first motor 43 is coaxially fixedly connected. The peripheral wall of the cam 42 abuts against the bottom wall of the support plate 2 toward the mounting plate 102. One end of the spring piece 41 is fixedly connected to the mounting plate 102 toward the top wall of the support plate 2. The other end of the spring piece 41 is fixedly connected to the bottom wall of the support plate 2 toward the mounting plate 102. The spring piece 41 is arranged on one side of the hinge axis of the support plate 2, and the first motor 43 is arranged on the other side of the hinge axis of the support plate 2. A groove 10 is provided on the support plate 2, and a spirit level 11 is provided in the groove 10. The top surface of the spirit level 11 is flush with the top wall of the support plate 2 away from the mounting plate 102.

[0046] Reference Figure 1The limit assembly 5 is arranged on the side of the support plate 2 close to the spring piece 41, and the limit assembly 5 includes a first limit plate 51 and a second limit plate 52. The first limit plate 51 is fixedly connected to the side wall of the support plate 2, and the second limit plate 52 is fixedly connected to another adjacent side wall of the support plate 2. The first limit plate 51 and the second limit plate 52 are vertically arranged, and the first limit plate 51 and the second limit plate 52 are enclosed to form a limit space 12 for limiting the substrate 23. The top wall of the first limit plate 51 and the top wall of the second limit plate 52 are flush and both higher than the top wall of the support plate 2. The intersection of the side wall of the support plate 2 away from the bracket 1 and the first limit plate 51 and the second limit plate 52 is set to the zero position, and the probe used to detect the substrate 23 is always aligned with the zero position.

[0047] Reference Figure 1 and Figure 2 When it is necessary to move the substrate 23 to a relative position on the support plate 2, the first motor 43 is started, and the first motor 43 drives the cam 42 to rotate. The cam 42 and the support plate 2 abut against the side wall of the bracket 1, and the cam 42 pushes the corner of the support plate 2 close to the first motor 43 in the direction away from the mounting plate 102. At this time, the spring plate 41 is compressed by the pressure of the corner of the support plate 2 away from the cam 42, and the support plate 2 tilts, and then the substrate 23 placed on the support plate 2 moves toward the end close to the spring plate 41 under the action of gravity.

[0048] When the substrate 23 slides on the support plate 2, one of the side walls of the substrate 23 and the first limit plate 51 abut against the side wall of the limit space 12, and the other side wall of the substrate 23 and the second limit plate 52 abut against the side wall of the limit space 12. At this time, the substrate 23 moves to the detection position of the detection equipment, realizing automatic alignment of the substrate 23, which is simple, convenient and saves manpower; when the substrate 23 moves and is positioned at the relative position of the support plate 2, the first motor 43 is started, and the first motor 43 drives the cam 42 to rotate, and the corner of the support plate 2 close to the spring piece 41 rotates in the direction away from the bracket 1 under the action of the elastic force of the spring piece 41 until the support plate 2 is horizontal, and the level 11 is used to correct the horizontality of the support plate 2 supporting the substrate 23, and the substrate 23 detection equipment is used to detect the substrate 23 placed on the horizontal support plate 2, which is easy to operate and conducive to achieving good detection effect and accuracy. When the substrate 23 has not yet moved to abut against the first limit plate 51 and the second limit plate 52, the first motor 43 drives the cam 42 to reciprocate, causing the support plate 2 to shake, thereby avoiding the problem of the substrate 23 and the support plate 2 getting stuck and causing the substrate 23 to be unable to move to the corresponding position.

[0049] Reference Figure 3 and Figure 4, an installation box 13 for accommodating the positioning assembly 7 is provided in the accommodating groove 9, and a sliding member 8 is provided in the accommodating groove 9 for driving the installation box 13 to slide along the length direction of the accommodating groove 9. The sliding member 8 includes a sliding block 81, a second motor 82 and a first screw rod 83. The sliding block 81 and the installation box 13 are fixedly connected toward the bottom wall of the bottom of the accommodating groove 9. One end of the first screw rod 83 is rotatably connected to the groove wall of the accommodating groove 9. The other end of the first screw rod 83 passes through the sliding block 81 and is coaxially fixedly connected to the output shaft of the second motor 82. The second motor 82 is fixedly connected to the side wall of the support plate 2. The first screw rod 83 is threadedly connected to the sliding block 81. The axial direction of the first screw rod 83 is parallel to the length direction of the accommodating groove 9.

[0050] When inspecting substrates 23 of different sizes, it is necessary to expand or reduce the distance between one of the mounting boxes 13 and the first limiting plate 51, or to expand or reduce the distance between the other mounting box 13 and the second limiting plate 52. At this time, the second motor 82 is started, and the second motor 82 drives the first screw rod 83 to rotate, and the first screw rod 83 and the sliding block 81 rotate relative to each other. The sliding block 81 drives the mounting box 13 to move along the axis of the first screw rod 83, so that the mounting box 13 slides along the length of the receiving groove 9, thereby achieving the adjustment of the positioning size of the pressure plate 71, so as to achieve a good effect of positioning the substrate 23 on the support plate 2 when inspecting substrates 23 of different sizes.

[0051] Reference Figure 4 and Figure 5, the two positioning components 7 are evenly arranged along the axis direction perpendicular to the first screw rod 83, the positioning component 7 includes a pressure plate 71, a slide column 72, a first gear 73, a rack 74 and an electric push rod 75, one end of the pressure plate 71 is fixedly connected to the top side wall of the slide column 72, and the end of the slide column 72 away from the pressure plate 71 is coaxially fixedly connected to the first gear 73, and the side wall of the mounting box 13 facing the base plate 23 is provided with a through groove 14 for the pressure plate 71 and the slide column 72 to extend, and the groove wall of the through groove 14 and the peripheral wall of the slide column 72 abut against each other. Then, the rack 74 is slidingly connected and arranged on the inner wall of the installation box 13. The extension direction of the rack 74 is perpendicular to the moving direction of the installation box 13. A dovetail groove 15 is provided on the side wall of the rack 74 facing the inner wall of the installation box 13. The extension direction of the dovetail groove 15 is parallel to the extension direction of the rack 74. A dovetail slide rail 16 is fixedly connected to the inner wall of the installation box 13. The dovetail slide rail 16 is stuck in the dovetail groove 15. The first gear 73 and the rack 74 are meshed. The height of the first gear 73 is greater than the height of the rack 74. The electric push rod 75 is fixedly connected to the inner box bottom of the installation box 13, and the end of the piston rod of the electric push rod 75 is coaxially connected to the first gear 73. An arc groove 17 and a vertical groove 18 are provided on the peripheral wall of the slide column 72. The extension direction of the vertical groove 18 is parallel to the axial direction of the slide column 72. The end of the vertical groove 18 close to the inner box bottom is connected to one end of the arc groove 17. An insertion rod 19 is fixedly connected to the inner side wall of the installation box 13. The end of the insertion rod 19 away from the inner side wall of the installation box 13 slides with the vertical groove 18 or the arc groove 17. A power part 20 for driving the rack 74 to slide is provided in the installation box 13.

[0052] The power member 20 includes two second screw rods 201, a driving gear 202, a driven gear 203 and a third motor 204. The two second screw rods 201 are rotatably connected to the inner wall of the installation box 13. One end of one of the second screw rods 201 passes through one of the racks 74 and is threadedly connected to the rack 74. The axial direction of the second screw rod 201 is parallel to the extension direction of the rack 74. One end of the other second screw rod 201 passes through the other rack 74 and is threadedly connected to the rack 74. The two second screw rods 201 are coaxially arranged, the driven gear 203 is coaxially fixedly connected to the two second screw rods 201, the third motor 204 is fixedly connected to the inner wall of the installation box 13, the output shaft of the third motor 204 is coaxially fixedly connected to the driving gear 202, and the driving gear 202 and the driven gear 203 are meshed.

[0053] When the locking cam 73 is in the state of being moved, the locking cam 73 is in the state of being moved upwards, and the locking cam 73 is in the state of being moved downwards, so that the locking cam 73 is in the state of being moved upwards, and the locking cam 73 is in the state of being moved upwards, and the locking cam 73 is in the state of being moved upwards, and the locking cam 73 is in the state of being moved upwards,

[0054] Reference Figure 5 and Figure 6 When the base plate 23 is released from the positioning, the third motor 204 is started, and the third motor 204 drives the active gear 202 to rotate, and the active gear 202 drives the driven gear 203 to rotate, and the driven gear 203 drives the second screw rod 201 to rotate, and the second screw rod 201 and the rack 74 rotate relative to each other, and the rack 74 slides on the dovetail slide rail 16, and the rack 74 drives the first gear 73 to rotate, and the first gear 73 drives the slide column 72 and the pressure plate 71 to rotate, so that the pressure plate 71 is turned away from the top of the base plate 23, and then the electric push rod 75 is started, and the piston rod of the electric push rod 75 drives the first gear 73, the slide column 72 and the pressure plate 71 to move toward the bottom of the accommodating groove 9 until the top wall of the pressure plate 71 is flush with the notch of the accommodating groove 9.

[0055] By making the top wall of the pressing plate 71 flush with the notch of the through slot 14 , the influence of the notch of the accommodating slot 9 on the sliding of the substrate 23 when the substrate 23 slides on the supporting plate 2 is reduced, which is conducive to achieving a good limiting and positioning effect for the substrate 23 .

[0056] Reference Figure 1 、 Figure 7 and Figure 8 , both sides of the installation box 13 are provided with a blocking component 21 for blocking the accommodating groove 9, the blocking component 21 includes a blocking reel 211, a blocking piece 212 and a coil spring 213, one end of the blocking piece 212 is wound on the blocking reel 211, and the other end of the blocking piece 212 is fixedly connected to the side wall of the installation box 13 facing the groove wall of the accommodating groove 9, the blocking reel 211 and the groove wall of the accommodating groove 9 are rotatably connected, one end of the coil spring 213 is fixedly connected to the blocking reel 211, and the other end of the coil spring 213 is fixedly connected to the groove wall of the accommodating groove 9, and the notch of the accommodating groove 9 is provided with a blocking piece 22, which is used to block the gap between the blocking piece 212 and the groove wall of the accommodating groove 9.

[0057] When the installation box 13 moves in the accommodating groove 9, the distance between one side of the blocking piece 212 and the groove wall of the accommodating groove 9 increases. At this time, the blocking reel 211 rotates relative to the groove wall of the accommodating groove 9 under the drive of the blocking piece 212, and the coil spring 213 is stretched, and the distance between the other side of the blocking piece 212 and the groove wall of the accommodating groove 9 becomes smaller. At this time, the blocking reel 211 rotates relative to the groove wall of the accommodating groove 9 under the action of the elastic force of the coil spring 213, thereby realizing the winding of the blocking reel 211, and then realizing the blocking of the notch of the accommodating groove 9, which is beneficial to reduce the impact of the accommodating groove 9 on the sliding of the substrate 23 when the substrate 23 slides on the support plate 2.

[0058] This embodiment also discloses an electrical detection method, which includes the following steps:

[0059] S1: Using a moving member to move the mounting box 13 to a relative position according to the size of the substrate 23 to be inspected;

[0060] S2: Place the substrate 23 in the confined space 12, start the first motor 43, and the first motor 43 drives the cam 42 to tilt the support plate 2, compress the spring plate 41, and the substrate 23 moves toward the spring plate 41 under the action of gravity until one of the side walls of the substrate 23 and the first confining plate 51 abut against the side wall of the confined space 12, and the other adjacent side wall of the substrate 23 and the second confining plate 52 abut against the side wall of the confined space 12. At this time, the substrate 23 moves to the zero position of the support plate, and the substrate 23 and the probe are aligned;

[0061] S3: Use the electric push rod 75 to push the first gear 73 and the pressure plate 71 away from the bottom of the receiving groove 9. When the pressure plate 71 is completely extended out of the notch of the receiving groove 9, the power member 20 is started to drive the rack 74 to slide. The rack 74 drives the first gear 73 to rotate. The first gear 73 drives the pressure plate 71 to rotate until the pressure plate 71 rotates to the top of the base plate 23 and the insertion rod 19 is inserted into the arc groove 17.

[0062] S4: Start the first motor 43, which drives the cam 42 to rotate. Observe the value of the level meter 11. When the level meter 11 indicates that the support plate 2 is level, use the probe to detect the base plate 23.

[0063] The implementation principle of an electrical testing fixture and an electrical testing method in an embodiment of the present application is as follows: when testing a substrate 23, first place the substrate 23 on the pallet 2, and use the tilting component 4 to drive the pallet 2 to rotate along the hinge axis of the pallet 2, so that the pallet 2 is tilted. At this time, the substrate 23 is relatively displaced from the pallet 2 under the action of gravity until the substrate 23 is limited on the pallet 2 by the limiting component 5. At this time, the effect of aligning the substrate 23 to the zero point position of the pallet 2 is achieved, thereby achieving alignment of the substrate 23 and the probe, which facilitates the use of the probe to detect the substrate 23.

[0064] 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. An electrical testing fixture, characterized by: The invention comprises a support plate (2) for supporting a substrate (23) and a bracket (1) for supporting the support plate (2), wherein the support plate (2) and the bracket (1) are hinged, and the rotation axis of the support plate (2) and the bracket (1) passes through the center of the support plate (2), and a tilting component (4) for driving the support plate (2) to rotate along the diagonal of the support plate (2) is provided between the support plate (2) and the bracket (1), and a limiting component (5) for limiting the position of the substrate (23) and aligning the support plate (2) with the probe is provided on the support plate (2); The support plate (2) is provided with a positioning assembly (7) for clamping and positioning the substrate (23) on the support plate (2); the support plate (2) is provided with a receiving groove (9) for receiving the positioning assembly (7); the positioning assembly (7) comprises a pressure plate (71), a slide column (72), a first gear (73), a rack (74) and an electric push rod (75); the pressure plate (71), the slide column (72) and the first gear (73) are all coaxially fixedly connected; the electric push rod (75) is arranged in the receiving groove (9); the piston rod of the electric push rod (75) and the The first gear (73) is coaxially connected for rotation, and the first gear (73) is meshed with the rack (74). An arc groove (17) and a vertical groove (18) are provided on the peripheral wall of the slide column (72), and one end of the vertical groove (18) is connected to one end of the arc groove (17). An insertion rod (19) is provided on the groove wall of the accommodating groove (9), and one end of the insertion rod (19) away from the groove wall of the accommodating groove (9) extends into the vertical groove (18) or the arc groove (17). A power member (20) is provided in the accommodating groove (9) for driving the rack (74) to slide on the groove wall of the accommodating groove (9).

2. The electrical testing fixture according to claim 1, characterized in that: The tilting assembly (4) comprises a spring piece (41), a cam (42) and a first motor (43). The spring piece (41) and the first motor (43) are both arranged between the support plate (2) and the bracket (1). The spring piece (41) is used to support the support plate (2). The spring piece (41) is arranged on one side of the hinge shaft of the support plate (2). The first motor (43) is arranged on the other side of the hinge shaft of the support plate (2). The first motor (43) drives the cam (42) to rotate. The peripheral wall of the cam (42) abuts against the side wall of the support plate (2) away from the base plate (23).

3. The electrical testing fixture according to claim 1, characterized in that: The limiting assembly (5) comprises a first limiting plate (51) and a second limiting plate (52) arranged on the supporting plate (2); the first limiting plate (51) and the second limiting plate (52) are arranged vertically; the first limiting plate (51) and the second limiting plate (52) enclose a limiting space (12) for limiting the substrate (23).

4. The electrical testing fixture according to claim 1, characterized in that: The receiving groove (9) is provided with an installation box (13) for accommodating the positioning assembly (7), and the receiving groove (9) is provided with a moving part for driving the installation box (13) to slide along the length direction of the receiving groove (9).

5. The electrical testing fixture according to claim 4, characterized in that: The movable member comprises a sliding block (81), a second motor (82) and a first screw rod (83); the sliding block (81) is arranged between the mounting box (13) and the bottom wall of the accommodating groove (9); one end of the first screw rod (83) is rotatably connected to the groove wall of the accommodating groove (9); the other end of the first screw rod (83) is threadedly connected to the sliding block (81) in turn and coaxially fixedly connected to the output shaft of the second motor (82); the second motor (82) is fixedly connected to the support plate (2).

6. The electrical testing fixture according to claim 4, characterized in that: Both sides of the installation box (13) are provided with a blocking assembly (21) for blocking the receiving groove (9), and the blocking assembly (21) comprises a blocking reel (211), a blocking piece (212) and a coil spring (213), one end of the blocking piece (212) is wound on the blocking reel (211), the other end of the blocking piece (212) is fixedly connected to the installation box (13), the blocking reel (211) is rotatably connected to the groove wall of the receiving groove (9), one end of the coil spring (213) is fixedly connected to the blocking reel (211), and the other end of the coil spring (213) is fixedly connected to the groove wall of the receiving groove (9).

7. The electrical testing fixture according to claim 1, characterized in that: A level (11) is provided on the supporting plate (2).

8. The electrical testing fixture according to claim 1, characterized in that: When the pressing plate (71) is received in the receiving groove (9), the top wall of the pressing plate (71) is flush with the notch of the receiving groove (9).

9. A detection method using the electrical detection fixture as claimed in claim 1, wherein the specific steps of the detection method are as follows: placing the substrate (23) to be inspected on the support plate (2); The tilting assembly (4) is activated, the support plate (2) is tilted, and the substrate (23) to be inspected moves toward the lowest point of the tilt of the support plate (2) under the action of gravity; The position of the substrate (23) to be inspected is limited by the limiting component (5) so that the substrate (23) to be inspected and the probe are aligned; The probe is used to detect a substrate (23) positioned on a support plate (2).

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