Debugging fixture

Abstract

The utility model provides a debugging tool, including circuit board, clamp, perforated plate and a plurality of telescopic terminals, the circuit board has first side and with first side opposite second side, the clamp is located first side of circuit board, and the clamp is used for holding the piece to be measured, the perforated plate is located first side of circuit board, and the perforated plate is provided with a plurality of through -hole, and the telescopic terminal is inserted into the through -hole one by one, and one end of telescopic terminal is connected with the circuit board, and the other end of telescopic terminal is used for connecting the piece to be measured, the debugging tool provided in the utility model has the advantages of good stability, high efficiency.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and more specifically, to debugging fixtures. Background Technology

[0002] In the research, development, debugging, and production testing of enterprise-level solid-state drives (SSDs), signal connections are required via debugging pins on the circuit board. Currently, the common method is to use test probes, manually clamping them to make contact with the pins and connecting the cables to the testing equipment.

[0003] However, the physical connection generated by manual clamping is extremely unstable. Furthermore, due to the tiny pins and unreliable clamping contact, even slight vibrations or cable pulling during testing can easily cause the connection to detach, resulting in signal interruption and severely impacting the efficiency and reliability of debugging and testing. Utility Model Content

[0004] This application provides debugging fixtures to improve the stability and efficiency of workpiece testing.

[0005] A debugging fixture includes a circuit board, a clamp, a perforated plate, and multiple retractable terminals. The circuit board has a first side and a second side opposite to the first side; the clamp is disposed on the first side of the circuit board and is used to clamp a device under test (DUT); the perforated plate is disposed on the first side of the circuit board and has multiple through holes; the retractable terminals are inserted one by one into the through holes, one end of each retractable terminal is connected to the circuit board, and the other end of each retractable terminal is used to connect to the DUT.

[0006] In some possible implementations, the circuit board is provided with a plurality of through holes that penetrate the first side and the second side, and the plurality of through holes correspond one-to-one with the plurality of through holes, with one end of the retractable terminal extending into the through hole.

[0007] In some possible implementations, the clamp includes a base, a clamping member, a rotating shaft, and a resetting member. The rotating shaft rotatably passes through the clamping member, and both ends of the rotating shaft are located on the base. One side of the resetting member abuts against the base, and the other side abuts against the clamping member.

[0008] In some possible implementations, the perforated plate is offset from the clamping member along the axial direction of the rotation axis, and the debugging fixture further includes a support block disposed on the side of the base away from the circuit board, the support block being spaced apart from the perforated plate.

[0009] In some possible implementations, the base is provided with an opening, the perforated plate passes through the opening, the perforated plate has a first thickness, the support block has a second thickness, the base has a third thickness, and the sum of the second thickness and the third thickness is equal to the first thickness.

[0010] In some possible implementations, the reset member includes a double torsion spring, which includes a left-handed spring body, a right-handed spring body, a connecting portion, a first torsion arm, and a second torsion arm. The connecting portion connects the left-handed spring body and the right-handed spring body. The end of the left-handed spring body away from the connecting portion extends in a straight line to form the first torsion arm, and the end of the right-handed spring body away from the connecting portion extends in the same straight line to form the second torsion arm. The first torsion arm and the second torsion arm abut against the base, and the connecting portion abuts against the clamping member. Both the left-handed spring body and the right-handed spring body are sleeved on the rotating shaft.

[0011] In some possible implementations, the fixture further includes a limiting protrusion disposed on the base, the limiting protrusion being located between the perforated plate and the support block, the limiting protrusion including a limiting body and a limiting support, the limiting support being disposed on the side of the limiting body facing the clamping member, a stepped groove being provided between the limiting support and the limiting body, the stepped groove being used to accommodate part of the test piece, and the limiting support being used to support the perforated plate.

[0012] In some possible implementations, the clamp is fixed to the circuit board by screws.

[0013] In some possible implementations, the perforated plate includes a main body and ears respectively connected to opposite ends of the main body. Each ear is provided with a first fixing hole, and the circuit board is provided with a second fixing hole corresponding to the first fixing hole. The perforated plate is fixed to the circuit board by a fastener passing through the first fixing hole and the second fixing hole.

[0014] In some possible implementations, a bushing is provided inside the through hole, the bushing being made of a metallic or ceramic material.

[0015] In this application, a fixture, a perforated plate, and multiple retractable terminals are provided on the first side of the circuit board. The fixture is used to hold the device under test (DUT), and the perforated plate has multiple through holes for the insertion of multiple retractable terminals. One end of each retractable terminal is fixedly connected to the circuit board, and the other end is used to connect to the DUT. The DUT is positioned on the first side of the circuit board under the clamping action of the fixture. The multiple retractable terminals form a repeatable and positionally defined electrical connection with the DUT under the guidance of the through holes. This reduces the loosening of contacts and vibration-induced detachment caused by manually holding probes, significantly improves the mechanical stability and electrical connection reliability during signal connection, reduces test interruptions, and improves the efficiency of R&D debugging and production testing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall debugging fixture provided for one quantity of this application.

[0018] Figure 2 for Figure 1 A schematic diagram of the debugging fixture from another angle.

[0019] Figure 3 for Figure 1 The diagram shows a test fixture holding the part under test.

[0020] Figure 4 for Figure 1 The exploded view of the debugging fixture shown.

[0021] Figure 5 Figure 4 The diagram shows the perforated plate and the retractable terminal.

[0022] Figure 6 for Figure 4 A schematic diagram of the fixture shown.

[0023] Explanation of key component symbols: 100: Debugging fixture; 200: Component under test; 10: Circuit board; 11: First side; 12: Second side; 13: Connecting surface; 20: Clamp; 21: Base; 211: Fixing seat; 211a: First shaft hole; 212: Opening; 22: Clamping member; 221: First pressing part; 222: Second pressing part; 223: Rotating part; 223a: Second shaft hole; 224: Accommodating space; 225: Reinforcing rib; 23: Rotating shaft; 24: Reset member; 241: Left-handed spring body; 242: Right-handed spring body; 243: Connecting part; 244: First torsion arm; 245: Second torsion arm; 30: Perforated plate; 31: Main body; 311: Through hole; 32: Ear; 321: First fixing hole; 101: Second fixing hole; 40: Telescopic terminal; 50: Support block; 210: Limiting protrusion; 210a: Limiting body; 210b: Limiting support; 210c: Stepped groove; A: Thickness direction; B: Length direction; C: Width direction. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] Please see Figure 1 , Figure 2 as well as Figure 3One embodiment of this application provides a debugging fixture 100 for performing stable and reliable electrical testing and signal debugging on a device under test (DUT) 200. Specifically, the DUT 200 includes an enterprise-grade solid-state drive. In other embodiments, the debugging fixture 100 can also be used for other electronic modules and circuit boards with high-density, micro-pitch debugging pins or test points, such as graphics cards, communication modules, industrial control motherboards, or vehicle controllers, providing them with a universal and efficient test interface solution.

[0029] Please see Figure 4 , Figure 5 as well as Figure 6 In this embodiment, the debugging fixture 100 includes a circuit board 10, a clamp 20, a perforated plate 30, and multiple retractable terminals 40. The clamp 20, the perforated plate 30, and the multiple retractable terminals 40 are all located on the circuit board 10.

[0030] The circuit board 10 is generally plate-shaped and includes a first side 11, a second side 12, and a plurality of connecting surfaces 13. The first side 11 and the second side 12 are spaced apart. The plurality of connecting surfaces 13 connect the first side 11 and the second side 12. The thickness direction A is defined from the first side 11 to the second side 12, and the length direction B and the width direction C perpendicular to the thickness direction A are defined.

[0031] The circuit board 10 can adopt a multi-layer structure to optimize signal paths and provide a good ground return channel. For high-speed interface testing, the stacked structure can adopt a "signal-ground-signal" or "power-ground-signal-ground" method to obtain better electromagnetic compatibility performance. Simultaneously, electrical connections between layers can be achieved through pre-set vias. The circuit board 10 not only serves as a structural support component but also as a platform for distributing and converging test signals. Depending on the testing requirements, differential pairs, filter networks, power supply regulator circuits, or level conversion modules can be pre-laid on the circuit board 10, thereby enabling this debugging fixture 100 to possess some front-end processing capabilities. In some embodiments, the circuit board 10 can further integrate programmable logic devices to automatically execute handshake protocol actions or test sequences during debugging, thereby further improving the degree of test automation.

[0032] Both the perforated plate 30 and the clamp 20 are disposed on the first side 11 of the circuit board 10. The perforated plate 30 has multiple through holes 311, into which multiple retractable terminals 40 are inserted one-to-one. One end of each retractable terminal 40 establishes an electrical connection with the circuit board 10, while the other end is used to contact the corresponding pin on the device under test 200 during testing, forming a stable electrical connection. The clamp 20 is used to hold and fix the device under test 200 during testing, ensuring accurate and reliable contact between it and the retractable terminals 40.

[0033] Please see also Figure 3 In use, first place the device under test (DUT) 200 in the predetermined position of the fixture 20, and roughly align its debugging pins with the retractable terminal 40 on the perforated plate 30. Then, operate the fixture 20 to clamp and fix the DUT 200. Under the pressure of the fixture 20, the DUT 200 is stably pushed towards the perforated plate 30, forcing the retractable terminal 40 to compress and deform, establishing a tight and stable physical contact and electrical connection between its other end and the debugging pins on the DUT 200. At this point, stable electrical testing and signal debugging can be performed through the cable or testing equipment connected to the second side 12 of the circuit board 10. After the test is completed, release the fixture 20; the retractable terminal 40 resets under its own elastic force, separating from the DUT 200, allowing the DUT 200 to be safely removed.

[0034] In this embodiment, the perforated plate 30 is generally cuboid in shape and is an insulator. The perforated plate 30 includes a main body 31 and two ears 32. The two ears 32 are connected to opposite ends of the main body 31. The height of the ears 32 along the thickness direction A is less than the height of the main body 31 along the thickness direction A. Each ear 32 is provided with a first fixing hole 321, and the circuit board 10 is provided with a second fixing hole 101. The second fixing hole 101 is correspondingly provided with the first fixing hole 321 along the thickness direction A. A fastener (e.g., a screw) can be provided in the first fixing hole 321 and the second fixing hole 101 to realize the connection between the perforated plate 30 and the circuit board 10. The main body 31 is provided with a plurality of through holes 311, which penetrate the main body 31 along the thickness direction A. Specifically, the main body 31 is provided with twelve through holes 311, which are distributed in two rows at intervals. The porous plate 30 is made of one of the following materials: polyoxymethylene, nylon, polycarbonate, or engineering plastics.

[0035] In some embodiments, to further improve assembly convenience, the perforated plate 30 may adopt a detachable structure and be connected to the circuit board 10 by means of snap-fit ​​or slide rail, allowing users to quickly replace the perforated plate 30 with different hole layouts to adapt to different models of test pieces 200. In addition, the material of the perforated plate 30 can also be adjusted according to application requirements. For example, in scenarios requiring high-temperature welding resistance or chemical corrosion resistance, reinforced polyphenylene sulfide, liquid crystal polymer, or glass-filled nylon materials can be used instead.

[0036] In some embodiments, to further improve the wear resistance of the through hole 311, a metal or ceramic bushing is provided on the inner side of the through hole 311, so that the retractable terminal 40 is not easily worn on the hole wall during repeated insertion and removal. For special types of test object arrays, the through holes 311 of the perforated plate 30 can also be designed with different hole diameter combinations or different countersunk hole depths to adapt to test objects 200 with different strokes and types.

[0037] In this embodiment, the clamp 20 includes a base 21, a clamping member 22, a rotating shaft 23, and a resetting member 24. The rotating shaft 23 rotatably passes through the clamping member 22, and both ends of the rotating shaft 23 are located on the base 21. One side of the resetting member 24 abuts against the base 21, and the other side abuts against the clamping member 22. The base 21 is located on the first side 11 of the circuit board 10. The rotating shaft 23 has an axis, which is generally parallel to the length direction B.

[0038] The base 21 has two protruding fixing seats 211 on the side opposite to the first side 11. The two fixing seats 211 are arranged at intervals relative to each other along the length direction B. Each fixing seat 211 is provided with a first shaft hole 211a. The two ends of the rotating shaft 23 are respectively inserted into one of the first shaft holes 211a, so that the rotating shaft 23 can rotate relative to the base 21. The base 21 can be made of metal (such as aluminum alloy) or high-strength engineering plastic to maintain structural stability under high-frequency use. For debugging scenarios that require anti-static protection, anti-static plastic can be used or a conductive coating can be added to the surface of the base 21 to reduce the damage of static electricity to high-density chips.

[0039] In some embodiments, the rotating shaft 23 may employ a metal shaft with an oil-impregnated bushing structure, making the clamp 20 open and close more smoothly and more durable. The fixed base 211 may also be reinforced with ribs according to the frequency of use to avoid fatigue cracking caused by long-term operation.

[0040] The clamping member 22 includes a first pressing part 221, a second pressing part 222, and a rotating part 223. The first pressing part 221 is connected to the second pressing part 222. The rotating part 223 is located at the end of the second pressing part 222 away from the first pressing part 221. The rotating part 223 is provided with a second shaft hole 223a. The rotating shaft 23 passes through the second shaft hole 223a. When the first pressing part 221 is pressed, the second pressing part 222 can rotate accordingly. The second pressing part 222 is used to press against the workpiece 200 to be tested. Further, the first pressing part 221 and the second pressing part 222 are inclinedly connected to form an accommodating space 224. The clamping member 22 also includes a plurality of reinforcing ribs 225, which are disposed within the accommodating space 224. The reinforcing ribs 225 are used to enhance the structural stability of the clamping member 22.

[0041] In some embodiments, the lower surface of the second pressing part 222 facing the base 21 can be designed as a flat surface, an arc surface, or a structure with a buffer pad, depending on the surface structure of the test piece 200, to reduce local stress concentration on the surface of the test piece 200 during pressing. The first pressing part 221 can be ergonomically designed as a wide handle and an anti-slip strip, which facilitates long-term adjustment by the operator and reduces fatigue.

[0042] The reset member 24 includes a double torsion spring, comprising a left-handed spring body 241, a right-handed spring body 242, a connecting portion 243, a first torsion arm 244, and a second torsion arm 245. The left-handed spring body 241 and the right-handed spring body 242 have opposite helical directions. The connecting portion 243 connects the left-handed spring body 241 and the right-handed spring body 242. The end of the left-handed spring body 241 away from the connecting portion 243 extends in a straight line to form the first torsion arm 244. The end of the right-handed spring body 242 away from the connecting portion 243 extends in a straight line to form the second torsion arm 245. The first torsion arm 244 and the second torsion arm 245 abut against the base 21. The connecting portion 243 abuts against the second pressing portion 222 of the clamping member 22. Both the left-handed spring body 241 and the right-handed spring body 242 are sleeved on the rotating shaft 23.

[0043] In some embodiments, the double torsion springs can employ different wire diameters or coil combinations to alter the overall recovery torque, adapting them to test pieces 200 of varying sizes and weights. For applications requiring greater clamping force, a stacked spring structure or double torsion springs can be used on either side of the rotating shaft 23 to further enhance the holding force of the clamping member 22.

[0044] In use, pressing the first pressing part 221 causes it to rotate around the rotation axis 23 via the rotating part 223, thereby driving the second pressing part 222 to overcome the torque of the double torsion spring and lift upwards, making room for the test piece 200. After positioning the test piece 200 in the predetermined position on the base 21, the first pressing part 221 is released. At this time, the recovery torque accumulated by the double torsion spring drives its connecting part 243 to push the second pressing part 222 to rotate in the opposite direction around the rotation axis 23, so that the second pressing part 222 firmly presses the test piece 200 downwards, tightly fixing it to the first side 11 of the circuit board 10. During this process, the debugging pins on the back of the test piece 200 establish reliable electrical contact with the retractable terminal 40 passing through the perforated plate 30. After the test is completed, pressing the first pressing part 221 again releases the clamping force, the double torsion spring is compressed again, the second pressing part 222 lifts up, and the test piece 200 can be safely removed.

[0045] In some embodiments, by adjusting the position of the torsion spring or adding a limiting structure to the first pressing part 221, multiple clamping forces can be achieved to adapt to test parts 200 with different thicknesses. In addition, to avoid accidental activation during operation, the first pressing part 221 may be provided with a safety boss or an anti-misoperation flange to make the pressing action more clear and safe.

[0046] Please see Figure 1 and Figure 2In this embodiment, viewed along the axis of rotation 23, the perforated plate 30 and the second pressing part 222 of the clamping member 22 are offset from each other. The debugging fixture 100 also includes a support block 50 disposed on the side of the base 21 away from the circuit board 10, with the support block 50 and the perforated plate 30 spaced apart. Thus, the support block 50 can be used to support the test piece 200. Further, the base 21 is provided with an opening 212, through which the perforated plate 30 passes. The perforated plate 30 has a first thickness, the support block 50 has a second thickness, and the base 21 has a third thickness, the sum of the second and third thicknesses being equal to the first thickness. This thickness matching structure allows the upper surface of the perforated plate 30 to be at the same height as the top surface of the support block 50, thereby ensuring uniform force on the test piece 200 and avoiding warping or insufficient contact caused by local height differences. In addition, the opening 212 can also serve as a terminal cleaning space, allowing the retractable terminal 40 to have residues blown away by compressed air or cleaned by cleaning tools after long-term use, ensuring the reliability of the terminal operation.

[0047] Please see Figure 4 and Figure 6 In this embodiment, the fixture 20 further includes a limiting protrusion 210 disposed on the base 21. The limiting protrusion 210 is located between the perforated plate 30 and the support block 50. The limiting protrusion 210 includes a limiting body 210a and a limiting support 210b. The limiting support 210b is disposed on the side of the limiting body 210a facing the clamping member 22. A stepped groove 210c is provided between the limiting support 210b and the limiting body 210a. The stepped groove 210c is used to accommodate part of the test piece 200, and the limiting support 210b is used to support the main body 31.

[0048] The stepped groove 210c can serve as an auxiliary positioning structure for the test piece 200, allowing the edge contour of the test piece 200 to mate with the stepped surface of the stepped groove 210c, thereby enhancing the repeatability accuracy of the test piece 200 and reducing the offset angle. Furthermore, the stepped groove 210c can be designed as a detachable component, enabling compatibility of test pieces 200 with different thicknesses or edge shapes by replacing the matching stepped groove 210c module.

[0049] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A debugging fixture, characterized in that, include: A circuit board having a first side surface and a second side surface opposite to the first side surface; A clamp is disposed on a first side of the circuit board and is used to hold the device to be tested; A perforated plate is disposed on a first side of the circuit board, and the perforated plate is provided with a plurality of through holes; Multiple retractable terminals are inserted one by one into the through hole. One end of each retractable terminal is connected to the circuit board, and the other end of each retractable terminal is used to connect to the device under test.

2. The debugging fixture as described in claim 1, characterized in that, The circuit board is provided with multiple through holes, which penetrate the first side and the second side. Each of the multiple through holes corresponds to a multiple through holes, and one end of the retractable terminal extends into the through hole.

3. The debugging fixture as described in claim 1, characterized in that, The clamp includes a base, a clamping member, a rotating shaft, and a resetting member. The rotating shaft rotatably passes through the clamping member, and both ends of the rotating shaft are located on the base. One side of the resetting member abuts against the base, and the other side abuts against the clamping member.

4. The debugging fixture as described in claim 3, characterized in that, Along the axial direction of the rotation axis, the perforated plate is offset from the clamping member. The debugging fixture also includes a support block disposed on the side of the base away from the circuit board, and the support block is spaced apart from the perforated plate.

5. The debugging fixture as described in claim 4, characterized in that, The base has an opening, the perforated plate passes through the opening, the perforated plate has a first thickness, the support block has a second thickness, the base has a third thickness, and the sum of the second thickness and the third thickness is equal to the first thickness.

6. The debugging fixture as described in claim 3, characterized in that, The reset component includes a double torsion spring, which includes a left-handed spring body, a right-handed spring body, a connecting portion, a first torsion arm, and a second torsion arm. The connecting portion connects the left-handed spring body and the right-handed spring body. The end of the left-handed spring body away from the connecting portion extends in a straight line to form the first torsion arm, and the end of the right-handed spring body away from the connecting portion extends in the straight line to form the second torsion arm. The first torsion arm and the second torsion arm abut against the base, and the connecting portion abuts against the clamping component. Both the left-handed spring body and the right-handed spring body are sleeved on the rotating shaft.

7. The debugging fixture as described in claim 4, characterized in that, The fixture further includes a limiting protrusion disposed on the base. The limiting protrusion is located between the perforated plate and the support block. The limiting protrusion includes a limiting body and a limiting support. The limiting support is disposed on the side of the limiting body facing the clamping member. A stepped groove is provided between the limiting support and the limiting body. The stepped groove is used to accommodate part of the test piece. The limiting support is used to support the perforated plate.

8. The debugging fixture as described in claim 1, characterized in that, The clamp is fixed to the circuit board by screws.

9. The debugging fixture as described in claim 1, characterized in that, The perforated plate includes a main body and ears connected to opposite ends of the main body. Each ear is provided with a first fixing hole. The circuit board is provided with a second fixing hole corresponding to the first fixing hole. The perforated plate is fixed to the circuit board by a fixing member passing through the first fixing hole and the second fixing hole.

10. The debugging fixture as described in claim 1 or 9, characterized in that, A bushing is provided inside the through hole, and the bushing is made of metal or ceramic material.

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