Reconfigurable circuit board functional test needle bed

Abstract

The utility model relates to circuit board function test equipment technical field especially, and more particularly to reconfigurable circuit board function test needle bed. Its technical scheme includes reconfigurable test needle bed body, placing plate and circuit board, the top of placing plate is equipped with base plate, still set up the positioning slot of placing circuit board on placing plate, still include. The utility model uses the cooperation of contact sensor, controller, air cylinder and clamping plate etc. structure, when using reconfigurable circuit board function test needle bed, circuit board is placed into positioning slot and triggers multiple contact sensors simultaneously, and the controller of each makes corresponding air cylinder drive pressing block to press down series button, thereby removing the locking of L-shaped clamping plate to base plate, at this time, base plate can drive probe to press down test. Thus make the probe accurate placement in positioning slot when circuit board can complete press down test, when circuit board is not accurately placed, base plate will be stuck, avoid the damage of probe or component caused by the deviation of test position.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board functional testing equipment, and in particular to a reconfigurable circuit board functional testing needle bed. Background Technology

[0002] Circuit board functional testing utilizes test beds, which achieve electrical connections through physical contact between probe arrays and test points to efficiently complete automated batch testing. With technological advancements, modern test beds have increasingly adopted reconfigurable designs to better adapt to the testing needs of different types of circuit boards. For example, some test beds employ modular designs, allowing users to replace probes, supports, or connectors according to different circuit board configurations. Others are equipped with intelligent force control systems that can adjust probe pressure in real time to ensure optimal contact. Furthermore, automatic alignment systems can visually identify reference points on the circuit board and automatically adjust probe positions, improving testing accuracy.

[0003] In existing technologies, the grooves in test bed probes are typically designed according to the standard dimensions of the circuit board to achieve mechanical positioning. However, in actual production, circuit boards are prone to edge burrs, dimensional tolerances, or component misalignment. If the circuit board is not fully embedded in the groove during placement (e.g., tilted or suspended), the groove's positioning will fail, causing the actual position of the circuit board to deviate from the theoretical positioning point. In this case, when the test bed presses down, the probe cannot be aligned with the test point and will touch other parts, resulting in the probe bending, breaking, or damaging fragile components on the circuit board. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the existing technology, the test needle bed groove is designed according to the standard size of the circuit board and is mechanically positioned. However, due to edge burrs, dimensional tolerances, or component mounting offsets on the circuit board, if the needle is not fully embedded in the groove during placement, the positioning will fail. The offset of the circuit board position will cause the probe to touch non-test points when it is pressed down, resulting in damage to the probe or the circuit board. The invention proposes a reconfigurable circuit board functional test needle bed.

[0005] The technical solution of this utility model is a reconfigurable circuit board functional test needle bed, including a reconfigurable test needle bed body, a placement plate and a circuit board. The top of the placement plate is provided with a substrate, and the placement plate is also provided with a positioning groove for placing the circuit board. It also includes: a support plate fixedly connected to the top of the reconfigurable test needle bed body, and the outer wall of the support plate is provided with a telescopic mechanism for locking the substrate to move towards the placement plate; a driving mechanism is provided on the support plate and the placement plate, and the driving mechanism is used to open the telescopic mechanism after the circuit board is placed into the positioning groove.

[0006] Optionally, the telescopic mechanism includes a support plate fixedly connected to the outer wall of the support plate, a first cylinder fixedly connected to the upper surface of the support plate, an L-shaped clamping plate fixedly connected to the piston rod of the first cylinder, a rectangular through hole for inserting the L-shaped clamping plate on the support plate, and a button mechanism for driving the first cylinder to open on the outer wall of the support plate.

[0007] Optionally, the button mechanism includes multiple support blocks fixedly connected to the outer wall of the support plate in a linear arrangement, each support block being provided with a button, and each button being arranged in series sequentially.

[0008] Optionally, the driving mechanism includes multiple controllers fixedly connected to the outer wall of the support plate, corresponding to the upper and lower buttons. The outer wall of the support plate is also fixedly connected to multiple second cylinders corresponding to the controllers. The output shaft of the controller is electrically connected to the corresponding lower second cylinder. The positioning groove is provided with a first contact sensor, a second contact sensor, a third contact sensor, a fourth contact sensor, and a fifth contact sensor. The input end of the controller is electrically connected to the corresponding first contact sensor, second contact sensor, third contact sensor, fourth contact sensor, and fifth contact sensor.

[0009] Optionally, the positioning groove has multiple telescopic grooves inside for the first contact sensor, the second contact sensor, the third contact sensor, the fourth contact sensor, and the fifth contact sensor to retract into. Each telescopic groove has a return spring fixedly connected inside it, and the end of the return spring away from the inner wall of the telescopic groove is fixedly connected to the corresponding first contact sensor, the second contact sensor, the third contact sensor, the fourth contact sensor, and the fifth contact sensor.

[0010] Optionally, the piston rod of the second cylinder is fixedly connected to a pressing block that abuts against the corresponding button below.

[0011] Optionally, the lower surface of the substrate is provided with a plurality of probes for aligning the circuit board.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes the cooperation of contact sensors, controllers, cylinders, and clamping plates. When using a reconfigurable circuit board functional test bed, the circuit board is placed in the positioning slot, simultaneously triggering multiple contact sensors. Each controller causes the corresponding cylinder to drive the pressing block to press the cascade button, thereby releasing the L-shaped clamping plate from locking the substrate. Only then can the substrate drive the probe to press down for testing. This ensures that the probe can complete the pressing test only when the circuit board is accurately placed in the positioning slot. If the circuit board is not accurately placed, the substrate will be clamped, preventing the probe from deviating from the test position and causing damage to the board or components. Attached Figure Description

[0014] Figure 1 A schematic diagram of the first state structure of the reconfigurable circuit board functional test bed of this utility model is provided.

[0015] Figure 2 A schematic diagram of the second state structure of the reconfigurable circuit board functional test bed of this utility model is provided.

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 for Figure 1 A cross-sectional structural diagram of the plate placed in the middle.

[0018] Reference numerals: 1. Reconfigurable test needle bed body; 11. Support plate; 111. Rectangular perforation; 112. Support plate; 113. First cylinder; 114. L-shaped clamping plate; 115. Controller; 116. Second cylinder; 117. Pressing block; 118. Support block; 119. Button; 12. Base plate; 13. Probe; 2. Placement plate; 21. Positioning groove; 22. Telescopic groove; 23. Return spring; 24. First contact sensor; 25. Second contact sensor; 26. Third contact sensor; 27. Fourth contact sensor; 28. Fifth contact sensor. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] like Figures 1 to 4 As shown, the reconfigurable circuit board functional test bed proposed in this utility model includes a reconfigurable test bed body 1, a placement plate 2, and a circuit board. A substrate 12 is provided on the top of the placement plate 2. The circuit board is placed into the positioning groove 21, triggering multiple contact sensors simultaneously to activate the first cylinder 113. Multiple probes 13 are provided on the lower surface of the substrate 12 to align with the circuit board. The probes 13 are components located on the lower surface of the substrate 12, and their function is to make physical contact with test points on the circuit board during testing, thereby achieving electrical connection for functional testing of the circuit board. The placement plate 2 also has a positioning groove 21 for placing the circuit board, and a contact sensor is located inside the groove. A support plate 11 is fixedly connected to the top of the reconfigurable test bed body 1. A drive mechanism is used to open the telescopic mechanism after the circuit board is placed into the positioning groove 21.

[0027] Among them, such as Figures 2 to 3 As shown, the outer wall of the support plate 11 is provided with a telescopic mechanism for locking the substrate 12 to move towards the placement plate 2. The telescopic mechanism includes a support plate 112 fixedly connected to the outer wall of the support plate 11. A first cylinder 113 is fixedly connected to the upper surface of the support plate 112. The first cylinder 113 is fixed to the support plate 112, and its piston rod drives the L-shaped locking plate 114 to extend and retract, thereby locking and unlocking the substrate 12. The piston rod of the first cylinder 113 is fixedly connected to the L-shaped locking plate 114. The L-shaped locking plate 114 is connected to the piston rod of the first cylinder 113 and is inserted into a rectangular through hole 111 to lock the substrate 12 and prevent it from moving. A rectangular through hole 111 is provided on the support plate 11 for the L-shaped locking plate 114 to be inserted, thereby locking and fixing the substrate 12. The outer wall of the support plate 11 is provided with a button mechanism for driving the first cylinder 113 to open.

[0028] Secondly, existing reconfigurable test bed technology solves the compatibility issues of traditional testing equipment through modular design and precision positioning mechanisms. Its core improvements include: the probe array 13 is integrated into an independent module, enabling quick assembly and disassembly via spring clips or electromagnetic locks; the module interface employs a reverse-insertion prevention design to ensure reliable electrical connections; the substrate 12 has pre-fabricated multi-layer PCB circuitry, combined with elastic pin technology for signal transmission, achieving a contact resistance of <10mΩ; the module has a built-in ID chip to store parameters, and the system automatically identifies and matches test programs, supporting adaptive testing of circuit boards of different specifications.

[0029] In addition, such as Figure 3 As shown, the button mechanism includes multiple linearly arranged support blocks 118 fixedly connected to the outer wall of the support plate 11. Each support block 118 is equipped with a button 119. The buttons 119 are mounted on the support blocks 118, and the multiple buttons are connected in series. When all buttons are pressed simultaneously, the first cylinder 113 is activated. Each button 119 is arranged in series sequentially.

[0030] It is worth noting that, such as Figures 2 to 3 As shown, a driving mechanism is provided on the support plate 11 and the placement plate 2. The driving mechanism includes multiple controllers 115 fixedly connected to the outer wall of the support plate 11, corresponding to the upper and lower buttons 119. The controllers 115 are fixed to the outer wall of the support plate 11, receive contact sensor signals, and control the action of the second cylinders 116. Multiple second cylinders 116 corresponding to the controllers 115 are also fixedly connected to the outer wall of the support plate 11. The piston rods of the second cylinders 116 drive the pressing blocks 117 to press the buttons 119. Each piston rod of the second cylinder 116 is fixedly connected to a pressing block 117 that presses against the corresponding lower button 119. The pressing blocks 117 are made of rubber. The output shaft of the controller 115 is electrically connected to the corresponding lower second cylinder 116.

[0031] Furthermore, such as Figure 1 and Figure 4 As shown, the positioning slot 21 is equipped with a first contact sensor 24, a second contact sensor 25, a third contact sensor 26, a fourth contact sensor 27, and a fifth contact sensor 28. These sensors are contact sensors, used to detect whether an object is in contact with or near the circuit board. In the reconfigurable circuit board functional test bed, the first contact sensor 24, the second contact sensor 25, the third contact sensor 26, the fourth contact sensor 27, and the fifth contact sensor 28 within the positioning slot 21 detect whether the circuit board is correctly placed in the positioning slot. When the circuit board is placed in the positioning slot 21, it touches these contact sensors, generating an electrical signal. This signal is transmitted to the corresponding controller 115, which then controls the subsequent actions of the second cylinder 116, the button 119, and the first cylinder 113, thereby controlling the substrate 12 and the probe 13. If the circuit board is not accurately placed, not all contact sensors will be triggered, thus preventing the probe from touching non-test points and causing component damage when pressed down. These contact sensors are typically mounted within the telescopic slot 22 and extend and retract via a return spring 23, allowing them to retract and return to their initial state when the circuit board is not in use. The input terminals of the controller 115 are electrically connected to the corresponding first contact sensor 24, second contact sensor 25, third contact sensor 26, fourth contact sensor 27, and fifth contact sensor 28.

[0032] Furthermore, such as Figure 4 As shown, the positioning groove 21 has multiple telescopic grooves 22 inside, for the retraction of the first contact sensor 24, the second contact sensor 25, the third contact sensor 26, the fourth contact sensor 27, and the fifth contact sensor 28. These telescopic grooves 22 are located inside the positioning groove 21 and are used in conjunction with the return springs 23. Each telescopic groove 22 has a fixedly connected return spring 23 inside it, which is used to retract the contact sensor when there is no circuit board. The end of the return spring 23 away from the inner wall of the telescopic groove 22 is fixedly connected to the corresponding first contact sensor 24, second contact sensor 25, third contact sensor 26, fourth contact sensor 27, and fifth contact sensor 28.

[0033] In this embodiment, when using the reconfigurable circuit board functional test bed, the circuit board is placed in the positioning slot 21 of the placement plate 2. At this time, the circuit board will contact the first contact sensor 24, the second contact sensor 25, the third contact sensor 26, the fourth contact sensor 27, and the fifth contact sensor 28 in the positioning slot 21. These contact sensors transmit signals to the corresponding controllers 115. Each controller 115 controls the corresponding second cylinder 116 to start, and its piston rod drives the pressing block 117 to move downward, pressing the button 119 on the support block 118. Only after each button 119 is pressed can the first cylinder 113 be activated, and its piston rod drives the L-shaped clamping plate 114 to retract from the rectangular through hole 111 of the support plate 11, releasing the jamming state on the substrate 12 on the placement plate 2. At this time, the substrate 12 on the top of the reconfigurable test bed body 1 can move downward, and the multiple probes 13 on its lower surface are aligned with the circuit board for testing. After the test is completed, the controller 115 controls the reset of each component. The L-shaped clamping plate 114 extends under the action of the first cylinder 113 and re-clamps the base plate 12. The reset spring 23 on the placement plate 2 can retract the contact sensor into the telescopic groove 22 when there is no circuit board.

[0034] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A reconfigurable circuit board functional test bed, comprising a reconfigurable test bed body (1), a placement plate (2), and a circuit board, wherein a substrate (12) is provided on the top of the placement plate (2), and a positioning groove (21) for placing the circuit board is also provided on the placement plate (2), characterized in that, Also includes: A support plate (11) is fixedly connected to the top of the reconfigurable test needle bed body (1). The outer wall of the support plate (11) is provided with a telescopic mechanism that locks the base plate (12) to move toward the placement plate (2). A drive mechanism is provided on the support plate (11) and the placement plate (2), and the drive mechanism is used to open the telescopic mechanism after the circuit board is placed into the positioning slot (21); The telescopic mechanism includes a support plate (112) fixedly connected to the outer wall of the support plate (11), a first cylinder (113) fixedly connected to the upper surface of the support plate (112), an L-shaped clamping plate (114) fixedly connected to the piston rod of the first cylinder (113), a rectangular through hole (111) for inserting the L-shaped clamping plate (114) is provided on the support plate (11), and a button mechanism for driving the first cylinder (113) to open is provided on the outer wall of the support plate (11). The driving mechanism includes multiple controllers (115) fixedly connected to the outer wall of the support plate (11) and corresponding to the button (119) above and below. The outer wall of the support plate (11) is also fixedly connected to multiple second cylinders (116) corresponding to the controllers (115). The output shaft of the controller (115) is electrically connected to the corresponding second cylinder (116) below. The positioning groove (21) is provided with a first contact sensor (24), a second contact sensor (25), a third contact sensor (26), a fourth contact sensor (27), and a fifth contact sensor (28). The input end of the controller (115) is electrically connected to the corresponding first contact sensor (24), second contact sensor (25), third contact sensor (26), fourth contact sensor (27), and fifth contact sensor (28). The positioning groove (21) has multiple telescopic grooves (22) for the first contact sensor (24), the second contact sensor (25), the third contact sensor (26), the fourth contact sensor (27) and the fifth contact sensor (28) to retract. Each telescopic groove (22) has a fixedly connected return spring (23). The end of the return spring (23) away from the inner wall of the telescopic groove (22) is fixedly connected to the corresponding first contact sensor (24), second contact sensor (25), third contact sensor (26), fourth contact sensor (27) and fifth contact sensor (28).

2. The reconfigurable circuit board functional test bed according to claim 1, characterized in that, The button mechanism includes multiple support blocks (118) arranged linearly and fixedly connected to the outer wall of the support plate (11). Each support block (118) is provided with a button (119), and each button (119) is arranged in series.

3. The reconfigurable circuit board functional test bed according to claim 1, characterized in that, The piston rod of the second cylinder (116) is fixedly connected to a pressing block (117) that abuts against the corresponding lower button (119).

4. The reconfigurable circuit board functional test bed according to claim 1, characterized in that, The lower surface of the substrate (12) is provided with a plurality of probes (13) for aligning the circuit board.

Images