Vertical test fixture for power supply module

Abstract

The utility model relates to the field of clamps, and discloses a vertical test clamp for a power supply module, which comprises a test frame, an impact tester is arranged at the upper part of the test frame, a centering assembly is arranged in the test frame, a clamping mechanism is arranged in the test frame, the clamping mechanism comprises a baffle plate, and the baffle plate is arranged on the test frame. The bottom end of the baffle is fixedly connected with the upper surface of the testing frame, a sliding groove is formed in the inner wall of the testing frame, a mounting plate is slidably connected to the inner wall of the sliding groove, a probe is fixedly connected to the front end of the mounting plate, and a moving block is slidably connected to the inner wall, located on the right side of the mounting plate, of the sliding groove. According to the utility model, through the arrangement of the clamping mechanism, it is ensured that the probe can be inserted into the access end of the power supply module after the power supply module is clamped by the baffle plate and the clamping plate, so that the position of the power supply module is fixed in the process of inserting the probe, and the effects that the insertion of the probe is not influenced in the fixing process and the probe is not easy to damage are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, and more particularly to a vertical test fixture for power modules. Background Technology

[0002] Vertical testing of power modules typically refers to applying impact pulses in the vertical direction during mechanical shock testing of the power module to evaluate its resistance and reliability under mechanical shock.

[0003] Because power modules may move or shake due to external forces during testing, leading to inaccurate test data, it is often necessary to fix the power modules in place with fixtures before testing.

[0004] During power module testing, it is often necessary to insert corresponding probes into the corresponding positions on the power module. Existing equipment, such as the power module test fixture and system disclosed in CN222318996U, includes a base plate, a push-pull clamp assembly, a push plate, and probes mounted on the push plate. The push-pull clamp assembly is fixedly mounted on the base plate via a base; the push plate is fixed to the push-pull rod via an adjusting nut; the probes include a first probe and a second probe. While the aforementioned application can achieve the goal of inserting probes into the appropriate positions during power module clamping, in actual use, when the power module has movable space, the probe may insert into the designated position but may also push the power module, causing it to move. Furthermore, because the probes are relatively fragile, they are prone to damage during this process. Therefore, a vertical test fixture for power modules is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a vertical test fixture for power modules, which aims to improve the problems in the prior art where probes are inconvenient to enter the designated position of the power module and are easily damaged.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vertical test fixture for a power module, comprising a test frame, an impact testing machine mounted on the upper part of the test frame, an alignment component disposed inside the test frame, a clamping mechanism disposed inside the test frame, the clamping mechanism comprising a baffle, the bottom end of the baffle being fixedly connected to the upper surface of the test frame, a sliding groove being provided on the inner wall of the test frame, a mounting plate being slidably connected to the inner wall of the sliding groove, a probe being fixedly connected to the front end of the mounting plate, a moving block being slidably connected to the inner wall of the sliding groove on the right side of the mounting plate, a clamping plate being fixedly connected to the top end of the moving block, a through hole being provided on the inner wall of the clamping plate, a cylinder being fixedly connected to the upper surface of the test frame, the output shaft of the cylinder being fixedly connected to the left end of the mounting plate, a driving component being jointly disposed at the bottom end of the mounting plate and inside the moving block, and a locking component being disposed on the inner wall of the test frame and inside the moving block.

[0007] As a further description of the above technical solution:

[0008] The centering component includes a mounting chamber located on the inner wall of the test frame. A motor is fixedly connected to the inner wall of the mounting chamber. A rotating disk is fixedly connected to the output shaft of the motor. A connecting rod is rotatably connected to the top of the rotating disk. A slider is rotatably connected to the end of the connecting rod away from the rotating disk. A centering plate is fixedly connected to the top of the slider.

[0009] As a further description of the above technical solution:

[0010] The driving assembly includes a driving rod, the left end of which is fixedly connected to the bottom end of the mounting plate. A moving groove is formed at the end of the driving rod away from the mounting plate. A locking block is slidably connected to the inner wall of the moving groove. The bottom end of the locking block is elastically connected to the inner wall of the moving groove by a spring. A pressure chamber is formed on the inner wall of the moving block. A reset block is piston-connected to the inner wall of the pressure chamber. A locking groove is formed at the bottom end of the moving block. The pressure chamber is also formed on the inner wall of the clamping plate. A control block is piston-connected to the inner wall of the pressure chamber. The left end of the control block is elastically connected to the inner wall of the pressure chamber by a spring. A contact plate is fixedly connected to the right end of the control block.

[0011] As a further description of the above technical solution:

[0012] The locking assembly includes a movable groove formed on the inner wall of the movable block. A locking block is slidably connected to the inner wall of the movable groove. The number of locking blocks is set to two. The ends of the two locking blocks that are far apart from each other are elastically connected to the inner wall of the movable groove by a spring. A control rope is fixedly connected to the end of the locking block near the spring. A slider is fixedly connected to the end of the control rope that is far away from the locking block. The outer wall of the slider is slidably connected to the inner wall of the clamping plate. A threaded rod is rotatably connected to the top of the slider. The outer wall of the threaded rod passes through and is threadedly connected to the inner wall of the clamping plate. The inner wall of the test frame has a locking groove.

[0013] As a further description of the above technical solution:

[0014] The movable block is rectangular in shape, and a protrusion is provided at the lower left end of the movable block.

[0015] As a further description of the above technical solution:

[0016] The right end of the clamping plate has a groove with the same shape and thickness as the clamping plate, and the clamping plate is located below the through hole.

[0017] As a further description of the above technical solution:

[0018] The number of air pressure chambers is one, a part of which is opened on the inner wall of the moving block, and the other part of which is opened on the inner wall of the clamping plate.

[0019] As a further description of the above technical solution:

[0020] The upper left end of the card block is provided with an inclined chamfer, and the right end of the two locking blocks on the side away from each other is provided with an inclined chamfer.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up baffles, cylinders, clamps, moving blocks, probes, etc., it is ensured that the probe can be inserted into the access end of the power module only after the power module is clamped by the baffles and clamps. This ensures that the position of the power module is fixed during the insertion of the probe, thereby ensuring that the insertion of the probe is not affected during the fixing process, and making the probe less likely to be damaged.

[0023] 2. In this utility model, by setting up a motor, rotating disk, connecting rod, slider, and centering plate, it is ensured that the power module can be in a position that matches the probe in the front-back direction. This ensures that after the power module is clamped in the left-right direction, the probe can be inserted into the power module's access end, achieving better clamping of the power module and protecting the probe. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0025] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of this utility model;

[0026] Figure 3 In this utility model Figure 2 Enlarged schematic diagram of the three-dimensional structure of part A in the middle;

[0027] Figure 4 In this utility model Figure 3 Enlarged schematic diagram of the three-dimensional structure of part B;

[0028] Figure 5 This is a three-dimensional cross-sectional view of the test frame and its internal structure in this utility model;

[0029] Figure 6 In this utility model Figure 5 Enlarged schematic diagram of the three-dimensional structure of part C.

[0030] Legend:

[0031] 1. Test frame; 2. Impact testing machine; 3. Centering assembly; 4. Clamping mechanism; 5. Locking assembly; 31. Mounting chamber; 32. Motor; 33. Rotating disk; 34. Connecting rod; 35. Slider; 36. Centering plate; 41. Baffle; 42. Sliding groove; 43. Mounting plate; 44. Probe; 45. Moving block; 46. Clamping plate; 47. Through hole; 48. Cylinder; 49. Drive assembly; 491. Drive rod; 492. Moving groove; 493. Locking block; 494. Spring 1; 496. Air pressure chamber; 497. Reset block; 498. Locking groove; 499. Control block; 4910. Spring 2; 4911. Contact plate; 51. Movable groove; 52. Locking block; 53. Spring 3; 54. Control rope; 55. Sliding plate; 56. Threaded rod; 57. Locking groove. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 5This utility model provides an embodiment of a vertical test fixture for a power module, comprising a test frame 1, an impact testing machine 2 on the upper part of the test frame 1, the impact testing machine 2 providing impact force for the vertical testing of the power module, an alignment component 3 inside the test frame 1, the alignment component 3 including a mounting chamber 31, the mounting chamber 31 being opened on the inner wall of the test frame 1, a motor 32 fixedly connected to the inner wall of the mounting chamber 31, a rotating disk 33 fixedly connected to the output shaft of the motor 32, the bottom center of the rotating disk 33 being fixedly connected to the output shaft of the motor 32, a connecting rod 34 rotatably connected to the top of the rotating disk 33, the number of connecting rods 34 being set to two, and the distance between the two connecting rods 34 and the center of the rotating disk 33 being the same, the included angle between the two connecting rods 34 being 180 degrees, a slider 35 rotatably connected to the end of the connecting rod 34 away from the rotating disk 33, and an alignment plate 36 fixedly connected to the top of the slider 35.

[0034] Reference Figure 2 , Figure 3 and Figure 6 The test frame 1 is equipped with a clamping mechanism 4, which includes a baffle 41. The bottom end of the baffle 41 is fixedly connected to the upper surface of the test frame 1. The inner wall of the test frame 1 is provided with a sliding groove 42. The inner wall of the sliding groove 42 is slidably connected to a mounting plate 43. The front end of the mounting plate 43 is fixedly connected to a probe 44. The probe 44 matches the shape of the power module's input end. The inner wall of the sliding groove 42 on the right side of the mounting plate 43 is slidably connected to a moving block 45. The moving block 45 is cuboid in shape and has a protrusion at its lower left end. The top end of the moving block 45 is fixedly connected to a clamping plate 46. The inner wall of the clamping plate 46 is provided with a through hole 47. The through hole 47 corresponds one-to-one with the probe 44, and the diameter of the through hole 47 is larger than the diameter of the probe 44. The upper surface of the test frame 1 is fixedly connected to a cylinder 48. The output shaft of the cylinder 48 is fixedly connected to the left end of the mounting plate 43. The mounting plate 43 can move in the left and right directions through the setting of the cylinder 48.

[0035] Reference Figure 3 , Figure 4 and Figure 6The bottom end of the mounting plate 43 and the interior of the movable block 45 are jointly provided with a driving component 49. The driving component 49 includes a driving rod 491, which is concave in shape. The bottom end of the driving rod 491 is not lower than the bottom end of the sliding groove 42. The right end protrusion of the driving rod 491 is located to the right of the protrusion of the movable block 45. By setting the right end protrusion of the driving rod 491, it is ensured that when the driving rod 491 moves from right to left, when it moves to the point where its protrusion contacts the protrusion of the movable block 45, it will be able to drive the movable block 45 to move synchronously with it. The left end of rod 491 is fixedly connected to the bottom end of mounting plate 43. A moving groove 492 is provided at the end of rod 491 away from mounting plate 43. A locking block 493 is slidably connected to the inner wall of the moving groove 492. An inclined chamfer is provided at the upper left end of the locking block 493. The bottom end of the locking block 493 is elastically connected to the inner wall of the moving groove 492 by spring 494. One end of spring 494 is fixedly connected to the bottom end of the locking block 493, and the other end of spring 494 is fixedly connected to the inner wall of the moving groove 492. The setting of spring 494 ensures that the locking block 493 has an upward moving force.

[0036] Reference Figure 3 , Figure 4 and Figure 6 The inner wall of the movable block 45 is provided with a pressure chamber 496. A reset block 497 is piston-connected to the inner wall of the pressure chamber 496. After the reset block 497 moves to its lowest movable position, its bottom end is flush with the lower surface of the movable block 45. A slot 498 is provided at the bottom end of the movable block 45, which communicates with the pressure chamber 496. The pressure chamber 496 is also provided on the inner wall of the clamping plate 46. There is one pressure chamber 496. Part of the pressure chamber 496 is provided on the inner wall of the movable block 45, and the other part is provided on the inner wall of the clamping plate 46. A control block 499 is piston-connected to the inner wall of the pressure chamber 496. The width of the control block 499 is wider than the width of the reset block 497. By setting the width, it is ensured that when the control block 499 moves towards the pressure chamber 496, the pressure chamber 497 is in a certain position. After the internal direction of 6 is moved, the pressure generated is sufficient to ensure that the control block 499 overcomes the elastic force of the first spring 494 and moves to the lowest position. The left end of the control block 499 is elastically connected to the inner wall of the air chamber 496 through the second spring 4910. One end of the second spring 4910 is fixedly connected to the left end of the control block 499, and the other end of the second spring 4910 is fixedly connected to the left end of the control block 499. The right end of the control block 499 is fixedly connected to the contact plate 4911. The right end of the clamping plate 46 has a groove with the same shape and thickness as the clamping plate 46. The groove ensures that the clamping plate 46 can be fully inserted into the groove of the clamping plate 46 after being subjected to force, thereby ensuring that the clamping plate 46 will not be unable to contact the outer wall of the power module due to the protrusion of the contact plate 4911, thus ensuring the clamping effect.

[0037] Reference Figure 3 , Figure 5 and Figure 6 A locking assembly 5 is provided on the inner wall of the test fixture 1 and inside the movable block 45. The locking assembly 5 includes a movable groove 51, which is formed on the inner wall of the movable block 45. A locking block 52 is slidably connected to the inner wall of the movable groove 51. The number of locking blocks 52 is set to two. The right end of the two locking blocks 52 on the side away from each other is provided with an inclined chamfer. The side of the two locking blocks 52 that is away from each other is elastically connected to the inner wall of the movable groove 51 by a spring 53. One end of the spring 53 is fixedly connected to the side of the two locking blocks 52 that is away from each other, and the other end of the spring 53 is fixedly connected to the inner wall of the movable groove 51. The inner wall is fixedly connected, and a control rope 54 is fixedly connected to one end of the locking block 52 near the spring 3 53. The control rope 54 is non-elastic. A slider 55 is fixedly connected to one end of the control rope 54 away from the locking block 52. The outer wall of the slider 55 is slidably connected to the inner wall of the clamping plate 46. The sliding direction of the slider 55 is up and down. A threaded rod 56 is rotatably connected to the top of the slider 55. The outer wall of the threaded rod 56 passes through and is threadedly connected to the inner wall of the clamping plate 46. The inner wall of the test frame 1 is provided with a locking groove 57. The number of locking grooves 57 is set to multiple, and the multiple locking grooves 57 are arranged in a linear array in the left and right directions.

[0038] Working principle: When in use, the operator first places the power module to be tested on the upper surface of the test rack 1, and then starts the motor 32.

[0039] When the motor 32 starts, the motor 32 drives the rotating disk 33 to rotate, which causes the end of the connecting rod 34 connected to the rotating disk 33 to be displaced, thereby causing the other end of the connecting rod 34 to move towards the middle of the test frame 1, so that the slider 35 and the centering plate 36 contact the outer wall of the power module during the movement and position it in the middle of the front-back direction of the test frame 1.

[0040] After completion, the staff turned off the motor 32 and started the cylinder 48, which caused the output shaft of the cylinder 48 to push the mounting plate 43, causing it to move from left to right.

[0041] Since the locking block 493 is located inside the locking slot 498 under the elastic force of the spring 494, during the movement of the mounting plate 43, the mounting plate 43 drives the driving rod 491 to move from left to right, and then the driving rod 491 drives the locking block 493 to move from left to right, thereby causing the locking block 493 to drive the moving block 45 to move from left to right.

[0042] As the moving block 45 moves from left to right, it causes the clamping plate 46 to move from left to right.

[0043] When the contact plate 4911 moves with the clamping plate 46 to the position of contact with the power module, it pushes the power module. When the right end of the power module contacts the baffle 41, the contact plate 4911 cannot move. At this time, since the clamping plate 46 is still moving, the contact plate 4911 moves to the left relative to the clamping plate 46, thus pushing the control block 499 to move in the direction of entering the air pressure chamber 496.

[0044] When the control block 499 enters the air pressure chamber 496, the reset block 497 moves downward under the action of air pressure, thereby pushing the locking block 493 out of the slot 498. Therefore, the locking block 493 cannot continue to drive the clamping plate 46 to move. Thus, the output shaft of the cylinder 48 can only drive the mounting plate 43 to move. Since the mounting plate 43 is fixed to the probe 44, the probe 44 can be inserted into the socket of the power module after the power module is fixed and its position corresponds to the probe 44.

[0045] As the moving block 45 moves from left to right, it can drive the locking block 52 to move. During the movement from left to right, its inclined surface contacts the inner wall of the test frame 1 and can retract to the position inside the movable slot 51. When its rear end is no longer under force, if it moves to the left, the straight surface of the locking block 52 contacts the inner wall of the locking slot 57, so it cannot move backward. Therefore, the fixing effect on the power module can be guaranteed.

[0046] After the test is completed, the staff first rotates the threaded rod 56, causing the threaded rod 56 to move upward during the rotation. This causes the threaded rod 56 to drive the slider 55 to move upward, which in turn causes the slider 55 to pull the control rope 54, thereby pulling the locking block 52 into the interior of the movable groove 51.

[0047] At this time, the staff starts the cylinder 48. When the cylinder 48 moves the mounting plate 43 to the point where the right end protrusion of the driving rod 491 contacts the lower left end protrusion of the moving block 45, the moving block 45 is reset through the contact of the protrusions.

[0048] When the contact plate 4911 is no longer in contact with the outer wall of the power module, the control block 499 moves outward under the elastic force of the second spring 4910, thereby causing the reset block 497 to reset under the action of air pressure. At this time, because the reset block 497 in the slot 498 leaves, the card block 493 can enter under the elastic force of the first spring 494, making it easy to use again.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical test fixture for power supply modules comprising a test rack (1), characterized in that: The upper part of the test frame (1) is provided with an impact testing machine (2), the inside of the test frame (1) is provided with a centering assembly (3), the inside of the test frame (1) is provided with a clamping mechanism (4), the clamping mechanism (4) comprises a baffle (41), the bottom end of the baffle (41) is fixedly connected with the upper surface of the test frame (1), the inner wall of the test frame (1) is provided with a sliding groove (42), the inner wall of the sliding groove (42) is slidably connected with a mounting plate (43), the front end of the mounting plate (43) is fixedly connected with a probe (44), the inner wall of the sliding groove (42) on the right side of the mounting plate (43) is slidably connected with a moving block (45), the top end of the moving block (45) is fixedly connected with a clamping plate (46), the inner wall of the clamping plate (46) is provided with a through hole (47), the upper surface of the test frame (1) is fixedly connected with a gas cylinder (48), the output shaft of the gas cylinder (48) is fixedly connected with the left end of the mounting plate (43), the bottom end of the mounting plate (43) and the inside of the moving block (45) are provided with a driving assembly (49), and the inner wall of the test frame (1) and the inside of the moving block (45) are provided with a locking assembly (5).

2. The vertical test fixture for power supply modules of claim 1, wherein: The centering assembly (3) comprises a mounting bin (31), the mounting bin (31) is provided in the inner wall of the test frame (1), the inner wall of the mounting bin (31) is fixedly connected with a motor (32), the output shaft of the motor (32) is fixedly connected with a rotating disc (33), the top end of the rotating disc (33) is rotatably connected with a connecting rod (34), one end of the connecting rod (34) away from the rotating disc (33) is rotatably connected with a sliding block (35), and the top end of the sliding block (35) is fixedly connected with a centering plate (36).

3. The vertical test fixture for power modules of claim 1, wherein: The driving assembly (49) comprises a driving rod (491), the left end of the driving rod (491) is fixedly connected with the bottom end of the mounting plate (43), the end of the driving rod (491) away from the mounting plate (43) is provided with a moving groove (492), the inner wall of the moving groove (492) is slidably connected with a clamping block (493), the bottom end of the clamping block (493) is elastically connected with the inner wall of the moving groove (492) through a spring (494), the inner wall of the moving block (45) is provided with a gas pressure bin (496), the inner wall of the gas pressure bin (496) is piston-connected with a reset block (497), the bottom end of the moving block (45) is provided with a clamping groove (498), the gas pressure bin (496) is also provided in the inner wall of the clamping plate (46), the inner wall of the gas pressure bin (496) is piston-connected with a control block (499), the left end of the control block (499) is elastically connected with the inner wall of the gas pressure bin (496) through a spring (4910), and the right end of the control block (499) is fixedly connected with a contact plate (4911).

4. The vertical test fixture for power modules of claim 3, wherein: The locking assembly (5) comprises a movable slot (51) formed in the inner wall of the moving block (45), the inner wall of the movable slot (51) is slidably connected with a locking block (52), the number of the locking block (52) is two, the ends of the two locking blocks (52) away from each other are elastically connected with the inner wall of the movable slot (51) through a spring three (53), one end of the locking block (52) close to the spring three (53) is fixedly connected with a control rope (54), one end of the control rope (54) away from the locking block (52) is fixedly connected with a sliding sheet (55), the outer wall of the sliding sheet (55) is slidably connected with the inner wall of the clamping plate (46), the top end of the sliding sheet (55) is rotatably connected with a threaded rod (56), the outer wall of the threaded rod (56) penetrates through and is threadedly connected with the inner wall of the clamping plate (46), and the inner wall of the test frame (1) is formed with a locking slot (57).

5. The vertical test fixture for power modules of claim 1, wherein: The moving block (45) is a cuboid, and the lower left end of the moving block (45) is provided with a protrusion.

6. The vertical test fixture for power modules of claim 1, wherein: The right end of the clamping plate (46) is formed with a groove with the same shape and thickness as the clamping plate (46), and the clamping plate (46) is below the through hole (47).

7. The vertical test fixture for power modules of claim 3, wherein: The number of the air pressure bin (496) is one, a part of the air pressure bin (496) is formed in the inner wall of the moving block (45), and the other part of the air pressure bin (496) is formed in the inner wall of the clamping plate (46).

8. The vertical test fixture for power modules of claim 4, wherein: The left upper end of the clamping block (493) is provided with an inclined chamfer, and the right ends of the two locking blocks (52) away from each other are provided with inclined chamfers.

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