Testing device

Abstract

The invention relates to the technical field of testing, and discloses a testing device which comprises a box body, a probe, a driving assembly, a sensing assembly and a control assembly. The box body is provided with a cavity for loading a circuit board. The probe comprises a first end and a second end which are opposite, and the first end is suitable for abutting against the circuit board. The driving assembly is connected with the second end and is suitable for driving the probe to get close to or away from the circuit board. The multiple sensing assemblies are arranged on the periphery of the probe and suitable for obtaining radial pressure information of the probe and generating control information according to a comparison result of the obtained radial pressure information and preset pressure information. The control assembly is electrically connected with the driving assembly and the sensing assembly and is suitable for controlling the driving assembly to drive the probe to slide according to the control information generated by the sensing assembly, the accuracy of the test result can be improved, and the test probe is prevented from being bent.

Description

Technical Field

[0001] The present invention relates to the field of testing technology, and in particular to a testing device. Background Art

[0002] Circuit boards undergo rigorous reliability testing before leaving the factory. Testing that simulates mechanical stresses like impact and vibration, which can occur during transportation or use, is crucial. These tests typically involve securely mounting the boards in a dedicated enclosure, where pre-set impact events are applied to verify the impact resistance and connection reliability of the boards and their components. During this process, the test probes connecting the boards to the test equipment are crucial interfaces for signal transmission and data acquisition.

[0003] In related technologies, when performing such collision tests, there is a risk that the circuit board will be displaced within the box under severe impact. At the same time, the main body of the probe used to connect to the test points of the circuit board is usually suspended in the air or relies solely on its own elasticity to maintain contact, lacking additional support or protective structures. When the box performs a collision action, if the circuit board is displaced or the box as a whole is impacted, these probes are extremely susceptible to unexpected lateral forces or impact forces, causing the probes to bend and deform. This will not only lead to test failure, requiring the process to be interrupted for repair or replacement of the probes, resulting in a waste of time and cost, but is also likely to cause irreversible damage to the precision test probes. Summary of the Invention

[0004] The present invention provides a testing device to improve the accuracy of test results and avoid the problem of bending of test probes.

[0005] The present invention provides a testing device, comprising: The box body is provided with a chamber for loading the circuit board; a probe comprising a first end and a second end opposite each other, wherein the first end is adapted to abut against the circuit board; a driving assembly connected to the second end and adapted to drive the probe toward or away from the circuit board; a plurality of sensing components disposed on the periphery of the probe, adapted to obtain radial pressure information of the probe and generate control information according to a comparison result of the obtained radial pressure information with preset pressure information; The control component is electrically connected to the driving component and the sensing component, and is adapted to control the driving component to drive the probe to slide according to control information generated by the sensing component.

[0006] Beneficial effect: By setting up a sensor component to monitor the radial impact force on the probe in real time, and linking the control component to drive the probe to retract, when the collision force exceeds the preset threshold, the probe is automatically withdrawn from the circuit board contact point, fundamentally avoiding the risk of probe bending.

[0007] In an optional embodiment, the method further includes: The cylinder is provided with an inner cavity, the probe is slidably arranged in the inner cavity of the cylinder along the axial direction of the cylinder, the box is provided with a mounting hole, and the cylinder is arranged in the mounting hole; The elastic sleeve is sleeved on the outer side of the cylinder, the inner wall of the elastic sleeve is connected to the outer wall of the cylinder, and the outer wall of the elastic sleeve is connected to the inner wall of the mounting hole.

[0008] Beneficial effects: The cylinder can provide precise axial guidance for the probe, and the elastic sleeve made of silicone material absorbs the lateral impact force on the box through deformation, greatly reducing the vibration energy transmitted to the probe, thereby synergistically enhancing the probe's anti-bending ability and extending its service life.

[0009] In an optional embodiment, the box includes: The box body is provided with a cavity, and the cavity is the chamber; The box cover is arranged on the box body and is suitable for sealing the chamber. One end of the box cover is rotatably connected to the box body, and the other end of the box cover is detachably connected to the box body.

[0010] Beneficial Effects: The pivoting connection between the lid and the main body facilitates opening and closing. Combined with a removable locking mechanism, this allows for quick installation and removal of circuit boards while ensuring the tightness of the test chamber through the rigid fixation of the lid once closed. This structure maintains the overall stability of the main body during severe collisions, preventing circuit boards from shifting due to vibration from the lid.

[0011] In an optional embodiment, the drive assembly includes: A first bracket is provided on a side of the box cover away from the box body; a winding roller, rotatably connected to the first bracket; A driving member, disposed on the first bracket, adapted to drive the winding roller to rotate; A traction rope has one end connected to the winding roller and the other end connected to the second end of the probe.

[0012] Beneficial effect: When the radial pressure information detected by the sensor component is greater than the preset pressure information, the control component controls the driving component to drive the winding roller to rotate, which can realize the winding of the traction rope, and then realize the separation of the probe and the circuit board, thereby protecting the probe.

[0013] In an optional embodiment, the driving member includes: a motor, arranged on the first bracket; a first gear connected to an output end of the motor; a second gear, sleeved on the winding roller and connected to the winding roller; A synchronous toothed belt is sleeved on the first gear and the second gear and meshes with the first gear and the second gear.

[0014] Beneficial Effects: The motor drives the take-up roller through a gear train, increasing the transmission ratio and, in turn, the take-up speed, accelerating the probe's response to leaving the circuit board. When the motor rapidly retracts the traction rope through the take-up roller, the probe can be lifted vertically off the circuit board in milliseconds, avoiding diagonal pulling.

[0015] In an optional embodiment, the method further includes: A second bracket is provided on a side of the box cover away from the box body; The guide roller is connected to the second bracket, the traction rope is wound around the guide roller, and the traction rope is in sliding contact with the outer wall of the guide roller.

[0016] Beneficial Effect: The traction rope is smoothly deflected by the guide roller before being wound onto the take-up roller, creating a low-friction transmission path. The layout of the guide roller further ensures that the traction force always acts along the probe axis, minimizing the risk of mechanical damage during protection operations.

[0017] In an optional embodiment, the method further includes: A first magnetic member and a second magnetic member are attracted to each other, the first magnetic member is arranged on the outer wall of the probe, and the second magnetic member is arranged on the inner wall of the cylinder; Wherein, the first magnetic attraction component and the second magnetic attraction component are in an adsorption state, and the probe is against the circuit board.

[0018] Beneficial effect: The first magnetic member and the second magnetic member are combined to attract and limit, so that the probe and the circuit board are kept in a state of abutting each other, avoiding instantaneous separation of the probe and the circuit board due to collision, and ensuring the test effect of the circuit board.

[0019] In an optional embodiment, a guide groove is provided on the inner wall of the cylinder away from the chamber, and the guide groove extends along the axial direction of the cylinder. The first magnetic component is provided on the outer wall of the second end of the probe. The first magnetic component is located in the guide groove, and the first magnetic component slides in cooperation with the guide groove. The second magnetic component is provided at one end of the guide groove close to the chamber.

[0020] Beneficial effect: The setting of the guide groove and the cooperation with the first magnetic attraction member can achieve circumferential limitation of the probe and prevent the probe from rotating.

[0021] In an optional embodiment, the method further includes: A fixing plate is arranged on the box cover, and a connecting hole is provided on the fixing plate. The fixing plate is detachably connected to the box body through a fastener passing through the connecting hole.

[0022] Beneficial effect: The fixing plate is detachably connected to the box body through fasteners passing through the connection holes, which can effectively suppress the slight displacement between the box cover and the box body during a collision and maintain the probe alignment accuracy.

[0023] In an optional embodiment, the method further includes: a positioning block, disposed on the inner wall of the chamber, wherein a receiving groove is disposed on the inner wall of the chamber, wherein the positioning block is in sliding engagement with the inner wall of the receiving groove, and wherein the positioning block is adapted to extend from or retract into the receiving groove; a second elastic member, disposed in the receiving groove, and having a tendency to drive the positioning block to extend out of the receiving groove; The positioning block includes a first surface and a second surface relative to each other, the first surface of the positioning block faces the box cover, the second surface of the positioning block is against the circuit board, and the distance between the first surface and the second surface of the positioning block gradually decreases along the direction from the accommodating groove to the positioning block.

[0024] Beneficial effect: The inclined guide structure of the positioning block automatically compresses the second elastic member when the circuit board is placed and slides into the positioning point. After the circuit board reaches the specified position, the positioning block can automatically pop out from the accommodating groove, thereby limiting the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a testing device according to an embodiment of the present invention; Figure 2 This is a structural diagram of the box body in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the positioning plate in an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the probe in an embodiment of the present invention; Figure 5 for Figure 4 A partial enlarged view of middle A; Figure 6 for Figure 4A partial enlarged view of B in the middle; Figure 7 Schematic diagram of the structure of the driving member in an embodiment of the present invention.

[0027] Description of reference numerals: 1. Box body; 101. Box body; 102. Box cover; 103. Chamber; 104. Mounting hole; 105. Receiving slot; 106. Limiting hole; 2. Circuit board; 3. Probe; 4. Sensor assembly; 5. Cylinder; 501. Guide slot; 6. Elastic sleeve; 7. First bracket; 8. Winding roller; 9. Driving element; 901. Motor; 902. First gear; 903. Second gear; 904. Timing belt; 10. Traction rope; 11. Second bracket; 12. Guide roller; 13. Second magnetic member; 14. Third bracket; 15. Plate; 1501. First through hole; 1502. Second through hole; 16. First elastic member; 17. Cable; 18. Fixing plate; 19. Support plate; 20. Positioning block; 201. Limiting groove; 21. Second elastic member; 22. Positioning plate; 23. Auxiliary plate; 24. Third elastic member; 25. Stud; 26. Nut; 27. First magnetic member. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present application. The terms "mounted," "connected," and "connected" should be interpreted broadly, and may include, for example, fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. The terms "parallel," "perpendicular," and "equal" encompass the described conditions and conditions similar to the described conditions, provided that the range of the similar conditions is within an acceptable range of deviation, as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] The following combination Figures 1 to 7 , describing embodiments of the present invention.

[0032] According to an embodiment of the present invention, a testing device is provided, comprising a housing 1, a probe 3, a driving assembly, a sensing assembly 4 and a control assembly. The housing 1 is provided with a chamber 103 for loading a circuit board 2. The probe 3 comprises a first end and a second end relative to each other, and the first end is adapted to abut against the circuit board 2. The driving assembly is connected to the second end and adapted to drive the probe 3 closer to or away from the circuit board 2. A plurality of sensing assemblies are arranged on the periphery of the probe 3 and adapted to obtain radial pressure information of the probe 3 and to generate control information based on a comparison result of the obtained radial pressure information with the preset pressure information. The control assembly is electrically connected to the driving assembly and the sensing assembly 4 and adapted to control the driving assembly to drive the probe 3 to slide based on the control information generated by the sensing assembly 4.

[0033] It should be noted that the control component is set as a controller, which is electrically connected to the drive component and the sensor component 4 respectively. When the circuit board 2 is displaced due to the collision test, the circuit board 2 transmits a force perpendicular to the axial direction of the probe 3 to the probe 3. At this time, the probe 3 begins to squeeze toward the inner wall of the cylinder 5, causing the radial pressure information detected by the sensor component 4 to be greater than the preset pressure information, and then generates control information to control the drive component to start running, driving the probe 3 away from the circuit board 2, and finally realizing the separation of the circuit board 2 and the first end of the probe 3, avoiding bending of the probe 3.

[0034] It can be understood that the probe 3 can slide in the cylinder 5 along the axial direction of the cylinder 5. Under normal circumstances, the first end of the probe 3 is in a state of extending from the cylinder 5 and abutting the circuit board 2. When the sensing component 4 detects that the pressure applied by the probe 3 is greater than the preset pressure information, the control component controls the driving component to operate, so that the probe 3 is separated from the circuit board 2.

[0035] The circuit board 2 may specifically be a server mainboard.

[0036] In this embodiment, a sensor component 4 is provided to monitor the radial impact force applied to the probe 3 in real time, and a control component is linked to drive the probe 3 to retract. When the collision force exceeds a preset threshold, the probe 3 is automatically withdrawn from the contact point of the circuit board 2, thereby fundamentally avoiding the risk of bending of the probe 3.

[0037] In one embodiment, the housing 1 further includes a barrel 5 and an elastic sleeve 6. The barrel 5 is provided with an inner cavity, and the probe 3 is slidably disposed in the inner cavity of the barrel 5 along the axial direction of the barrel 5. The housing 1 is provided with a mounting hole 104, and the barrel 5 is disposed in the mounting hole 104. The elastic sleeve 6 is sleeved on the outer side of the barrel 5, and the inner wall of the elastic sleeve 6 is connected to the outer wall of the barrel 5, and the outer wall of the elastic sleeve 6 is connected to the inner wall of the mounting hole 104.

[0038] It should be noted that the length of the cylinder 5 and the elastic sleeve 6 is greater than the depth of the mounting hole 104, and the two end faces of the two are flush with each other, so that both ends of the cylinder 5 and the elastic sleeve 6 can be extended from the mounting hole 104, which can accommodate the probe 3 to the greatest extent. Not only can the part extending from the cylinder 5 be shortened as much as possible, but the inner wall of the cylinder 5 can also fit with the outer wall of the probe 3 to protect the probe 3, thereby avoiding the bending of the probe 3 due to the longer probe 3 extending from the cylinder 5.

[0039] Optionally, the cylinder 5 can be made of plastic material, which not only has a certain rigidity but also facilitates setting a guide groove 501 on the inner wall of the cylinder 5 , while also reducing weight, making the collision test process more convenient.

[0040] Optionally, the elastic sleeve 6 can be configured as a silicone sleeve or a rubber sleeve, which can achieve a shock-absorbing effect.

[0041] Optionally, the cylinder 5 and the elastic sleeve 6 can be set to a cylindrical structure with a circular cross-section. Such a setting can make the thickness of the elastic sleeve 6 uniform, avoiding the occurrence of different deformation amounts due to uneven thickness, and further avoiding the insufficient deformation amount caused by the thinner area of ​​the elastic sleeve 6, resulting in limited lateral impact force and damage to the probe 3.

[0042] In this embodiment, the cylinder 5 can provide precise axial guidance for the probe 3, and the elastic sleeve 6 made of silicone material absorbs the lateral impact force of the box 1 through deformation, greatly reducing the vibration energy transmitted to the probe 3, thereby synergistically enhancing the bending resistance of the probe 3 and extending its service life.

[0043] In one embodiment, the plurality of sensor components 4 are disposed on the inner wall of the cylinder 5 at one end close to the chamber 103 , and the plurality of sensor components 4 are spaced apart along the circumference of the cylinder 5 .

[0044] It should be noted that the multiple sensor components 4 are electrically connected to the control component. When the radial pressure information detected by any sensor component 4 is greater than the preset pressure information, the control component can generate control information to control the drive component to start running.

[0045] It can be understood that a groove is provided on the inner wall of the cylinder 5, and the sensor component 4 can be embedded in the groove so that the detection end of the sensor component 4 can be flush with the inner wall of the cylinder 5, ensuring that the probe 3 can slide smoothly in the cylinder 5.

[0046] Optionally, the detection end of the sensor component 4 may be configured as an arc-shaped structure that fits in contact with the outer side wall of the probe 3 .

[0047] In this embodiment, multiple sensor components 4, evenly distributed around the perimeter, can comprehensively capture the stress state of probe 3 at various angles, making it particularly sensitive to side impact forces. This design ensures that abnormal impacts from any direction are promptly identified and trigger the protection mechanism, effectively eliminating the potential deformation risk of probe 3 caused by localized stress concentration.

[0048] In one embodiment, the box 1 includes a box body 101 and a box cover 102. The box body 101 is provided with a cavity, which serves as a chamber 103. The box cover 102 is disposed on the box body 101 and is suitable for covering the chamber 103. One end of the box cover 102 is rotatably connected to the box body 101, and the other end of the box cover 102 is detachably connected to the box body 101.

[0049] It should be noted that one of the two opposing sides of the lid 102 is pivotally connected to the housing 101 via a hinge or articulated axis, enabling the lid 102 to open and close relative to the housing 101. When the lid 102 is in the engaged state, the probe 3 automatically abuts against the circuit board 2. When the lid 102 is opened, the probe 3 is released from the circuit board 2. Furthermore, the other of the two opposing sides of the lid 102 is detachably connected to the housing 101, enabling the lid 102 to quickly engage and disengage from the housing 101.

[0050] In this embodiment, the rotatable connection between lid 102 and body 101 facilitates opening and closing. Combined with a removable locking mechanism, this not only allows for quick installation and removal of circuit boards 2, but also ensures the sealing of the test chamber through the rigid fixation of lid 102 once closed. This structure maintains the overall stability of body 101 during severe collisions, preventing displacement of circuit boards 2 due to vibration from lid 102.

[0051] In one embodiment, the drive assembly includes a first bracket 7, a take-up roller 8, a driving member 9, and a traction rope 10. The first bracket 7 is disposed on the side of the box cover 102 away from the box body 101. The take-up roller 8 is rotatably connected to the first bracket 7. The driving member 9 is disposed on the first bracket 7 and is adapted to rotate the take-up roller 8. One end of the traction rope 10 is connected to the take-up roller 8, and the other end is connected to the second end of the probe 3.

[0052] It should be noted that the first bracket 7, the second bracket 11 and the third bracket 14 are specifically configured as two independent support columns, wherein the winding roller 8 is arranged between the two support columns of the first bracket 7, the guide roller 12 is arranged between the two support columns of the second bracket 11, and the plate 15 is arranged on the top of the two support columns of the third bracket 14.

[0053] It can be understood that the two opposite ends of the winding roller 8 are rotatably connected to the two support columns of the first bracket 7 through bearings, which can reduce the rotational resistance of the winding roller 8 and reduce the energy consumption of the driving component 9 caused by the traction rope 10 being wound onto the winding roller 8.

[0054] In this embodiment, when the radial pressure information detected by the sensor component 4 is greater than the preset pressure information, the control component controls the driving component 9 to drive the winding roller 8 to rotate, thereby winding the traction rope 10, and then separating the probe 3 from the circuit board 2, thereby protecting the probe 3.

[0055] In one embodiment, the driving member 9 includes a motor 901, a first gear 902, a second gear 903, and a synchronous toothed belt 904. The motor 901 is mounted on the first bracket 7. The first gear 902 is connected to the output end of the motor 901. The second gear 903 is mounted on and connected to the winding roller 8. The synchronous toothed belt 904 is mounted on the first gear 902 and the second gear 903 and meshes with the first gear 902 and the second gear 903.

[0056] It should be noted that the number of teeth on the first gear 902 is greater than the number of teeth on the second gear 903, which can increase the transmission ratio and speed up the rotation of the winding roller 8. The number of teeth on the first gear 902 can also be set to be smaller than the number of teeth on the second gear 903, which can reduce the transmission ratio and the rotation speed of the winding roller 8, thereby making the rotation of the winding roller 8 more stable.

[0057] Alternatively, the first gear 902 and the second gear 903 may directly mesh with each other.

[0058] Optionally, the output end of the motor 901 may be directly connected to one end of the winding roller 8 .

[0059] In this embodiment, motor 901 drives take-up roller 8 via a gear train, increasing the transmission ratio and, in turn, the take-up speed, accelerating the probe 3's response to leaving circuit board 2. When motor 901 rapidly retracts traction rope 10 via take-up roller 8, probe 3 can be lifted vertically off circuit board 2 in milliseconds, avoiding diagonal pulling.

[0060] In one embodiment, the box further includes a second bracket 11 and a guide roller 12. The second bracket 11 is disposed on the side of the box cover 102 away from the box body 101. The guide roller 12 is connected to the second bracket 11. The traction rope 10 is wound around the guide roller 12, and the traction rope 10 is in sliding contact with the outer wall of the guide roller 12.

[0061] Optionally, both ends of the guide roller 12 may be fixedly connected to the two support columns of the second bracket 11 respectively.

[0062] Optionally, both ends of the guide roller 12 may be rotatably connected to the two support columns of the second bracket 11 through bearings respectively.

[0063] In this embodiment, the traction rope 10 is smoothly deflected by the guide roller 12 before being wound around the take-up roller 8, forming a low-friction transmission path. The layout design of the guide roller 12 further ensures that the traction force always acts along the axis of the probe 3, minimizing the risk of mechanical damage during the protection operation.

[0064] In one embodiment, a first magnetic member 27 and a second magnetic member 13 are further included. The first magnetic member 27 and the second magnetic member 13 can attract each other. The first magnetic member 27 is arranged on the outer wall of the probe 3, and the second magnetic member 13 is arranged on the inner wall of the cylinder 5. When the first magnetic member 27 and the second magnetic member 13 are in an attracted state, the probe 3 and the circuit board 2 are in contact with each other.

[0065] It should be noted that both the first magnetic member 27 and the second magnetic member 13 can be configured as an annular structure, wherein the first magnetic member 27 is sleeved on the outer wall of the probe 3, and the second magnetic member 13 is embedded in the inner wall of the cylinder 5. When the probe 3 is in a state of contact with the circuit board 2, the outer wall of the first magnetic member 27 and the inner wall of the second magnetic member 13 are attached to and attracted to each other, thereby achieving the positioning of the probe 3. The inner wall of the second magnetic member 13 is flush with the inner wall of the inner cavity of the cylinder 5.

[0066] In this embodiment, the first magnetic member 27 and the second magnetic member 13 are combined to attract and limit, so that the probe 3 and the circuit board 2 are kept in a state of abutting each other, avoiding instantaneous separation of the probe 3 and the circuit board 2 due to collision, thereby ensuring the test effect of the circuit board 2.

[0067] In one embodiment, a guide groove 501 is provided on the inner wall of the cylinder 5 away from the chamber 103, and the guide groove 501 extends along the axial direction of the cylinder 5. The first magnetic component 27 is provided on the outer wall of the second end of the probe 3. The first magnetic component 27 is located in the guide groove 501, and the first magnetic component 27 slides with the guide groove 501. The second magnetic component 13 is provided at one end of the guide groove 501 close to the chamber 103.

[0068] It should be noted that the first magnetic member 27 and the second magnetic member 13 are both configured as block structures, wherein the side of the second magnetic member 13 facing the probe 3 is flush with the inner wall of the cylinder 5 .

[0069] Optionally, a plurality of guide grooves 501 may be provided, and the plurality of guide grooves 501 are arranged at intervals along the circumference of the cylinder 5 , and the plurality of guide grooves 501 and the plurality of first magnetic members 27 are respectively provided in a one-to-one correspondence.

[0070] In this embodiment, the provision of the guide groove 501 and the cooperation with the first magnetic member 27 can achieve circumferential limitation of the probe 3 and prevent the probe 3 from rotating.

[0071] In one embodiment, the first magnetic member 27 is configured as an iron block, and the second magnetic member 13 is configured as a magnet.

[0072] It should be noted that the magnets are all configured as magnets. Meanwhile, the positions of the first magnetic member 27 and the second magnetic member 13 are interchangeable. Specifically, the second magnetic member 13 is disposed on the outer wall of the second end of the probe 3, and the second magnetic member 13 is located in the guide groove 501, and the second magnetic member 13 and the guide groove 501 are slidably engaged. The first magnetic member 27 is disposed at one end of the guide groove 501 close to the chamber 103.

[0073] In this embodiment, the iron block and magnet automatically lock when the probe 3 contacts the circuit board 2, providing additional contact retention and preventing signal interruption caused by even slight vibrations. If the collision exceeds the limit, the pullback force of the driver assembly precisely overcomes the magnetic attraction and spring forces, ensuring reliable triggering and resetting of the protective action.

[0074] In one embodiment, the apparatus further includes a third bracket 14 and a plate 15. The third bracket 14 is disposed on the side of the box cover 102 away from the box body 101. The plate 15 is connected to the third bracket 14 and has a first through-hole 1501 formed therein. The guide roller 12, the through-hole, and the probe 3 are sequentially arranged along the axial direction of the cylinder 5. The traction rope 10 passes through the first through-hole 1501 and is connected to the second end of the probe 3.

[0075] It should be noted that the guide roller 12, the through hole and the probe 3 are distributed in sequence along the axial direction of the cylinder 5, so that there can be a gap between the traction rope 10 and the inner wall of the first through hole 1501, thereby avoiding friction between the traction rope 10 and the inner wall of the first through hole 1501.

[0076] It can be understood that the axial direction of the first through hole 1501 coincides with the axial direction of the cylinder 5, so that the traction rope 10 can pull the probe 3 along the axial direction of the cylinder 5, avoiding the generation of a component force that deviates from the axial direction of the probe 3, and avoiding the generation of additional force between the probe 3 and the inner wall of the cylinder 5 when the probe 3 is away from the circuit board 2.

[0077] In this embodiment, the guide roller 12 , the through hole and the probe 3 are sequentially distributed along the axial direction of the cylinder 5 , which can reduce the friction of other structures on the traction rope 10 and extend the service life of the traction rope 10 .

[0078] In one embodiment, a first elastic member 16 is further included, which is arranged in the cylinder 5. One end of the first elastic member 16 is connected to the second end of the probe 3, and the other end of the first elastic member 16 is connected to the plate 15. The first elastic member 16 has a tendency to drive the probe 3 to extend into the chamber 103.

[0079] It should be noted that the first elastic member 16 can be specifically configured as a spring, wherein a plurality of traction ropes 10 can be provided.

[0080] In this embodiment, the first elastic member 16 can cooperate with the first magnetic member 27 and the second magnetic member 13 to stabilize the contact between the probe 3 and the circuit board 2 and also reset the probe 3 .

[0081] In one embodiment, a cable 17 is further included, one end of which is electrically connected to the second end of the probe 3 . A second through hole 1502 is provided on the board 15 , and the other end of the cable 17 passes through the second through hole 1502 and is connected to an external device.

[0082] In this embodiment, the through-hole design of the bracket's top plate prevents interference between the pull rope 10 and the test cable 17. The first elastic member 16 continuously applies downward pressure to the probe 3, ensuring stable electrical contact. The independent channel for the cable 17 prevents entanglement with moving parts, ensuring signal transmission integrity and smooth operation of the protective mechanism.

[0083] In one embodiment, a fixing plate 18 is further included, which is arranged on the box cover 102. The fixing plate 18 is provided with a connecting hole. The fixing plate 18 is detachably connected to the box body 101 through a fastener passing through the connecting hole.

[0084] In this embodiment, the fixing plate 18 is detachably connected to the box body 101 via fasteners extending through the connection holes, which can effectively suppress the slight displacement between the box cover 102 and the box body 101 during a collision and maintain the alignment accuracy of the probe 3.

[0085] In one embodiment, a support plate 19 is further included, which is disposed in the chamber 103 . The support plate 19 is disposed parallel to the box cover 102 . The side of the support plate 19 close to the box cover 102 is suitable for supporting the circuit board 2 .

[0086] In this embodiment, the horizontally arranged support plate 19 provides a uniform supporting surface for the circuit board 2. Its parallel layout with the box cover 102 ensures that all probes 3 are subjected to uniform force when pressed vertically, avoiding uneven contact pressure of the probes 3 caused by the tilt of the circuit board 2, thereby further improving test consistency.

[0087] In one embodiment, a positioning block 20 and a second elastic member 21 are further included. The positioning block 20 is disposed on the inner wall of the chamber 103. A receiving groove 105 is disposed on the inner wall of the chamber 103. The positioning block 20 is slidably engaged with the inner wall of the receiving groove 105. The positioning block 20 is adapted to extend from or retract into the receiving groove 105. The second elastic member 21 is disposed in the receiving groove 105 and has a tendency to drive the positioning block 20 to extend from the receiving groove 105. The positioning block 20 includes a first surface and a second surface facing each other. The first surface of the positioning block 20 faces the box cover 102, and the second surface of the positioning block 20 abuts against the circuit board 2. The spacing between the first surface and the second surface of the positioning block 20 gradually decreases along the direction from the receiving groove 105 to the positioning block 20.

[0088] Optionally, the second elastic member 21 is configured as a spring.

[0089] In this embodiment, the inclined guide structure of the positioning block 20 automatically compresses the second elastic member 21 when the circuit board 2 is placed and slides into the positioning point. After the circuit board 2 reaches the specified position, the positioning block 20 can automatically pop out from the accommodating groove 105, thereby achieving the limitation of the circuit board 2.

[0090] In one embodiment, the housing 101 further includes a positioning plate 22, an auxiliary plate 23, and a third elastic member 24. The positioning plate 22 includes opposing first and second ends. A limiting hole 106 is provided on the sidewall of the housing 101 near the opening of the chamber 103. The limiting hole 106 communicates with the receiving slot 105. The positioning plate 22 slidably engages with the limiting hole 106. The first end of the positioning plate 22 is located outside the limiting hole 106, and the second end of the positioning plate 22 is located inside the limiting hole 106. A limiting slot 201 is provided on the first surface of the positioning block 20. When the positioning block 20 is fully extended from the receiving slot 105, the limiting hole 106 and the limiting slot 201 are correspondingly arranged along the axial direction of the cylinder 5. The spacing between the two opposing side surfaces of the second end of the positioning plate 22 along the direction from the receiving slot 105 to the positioning block 20 gradually decreases along the direction from the limiting hole 106 to the limiting slot 201. The auxiliary plate 23 is connected to the first end of the positioning plate 22. The third elastic member 24 is disposed between the outer wall of the box body 101 and the auxiliary plate 23 . The third elastic member 24 has a tendency to drive the auxiliary plate 23 away from the limiting hole 106 .

[0091] It should be noted that the third elastic member 24 is configured as a spring. When the circuit board 2 is positioned and fastened to the box cover 102, the side of the box cover 102 facing the chamber 103 abuts against the auxiliary plate 23, thereby enabling the positioning plate 22 to be inserted into the limiting groove 201.

[0092] In this embodiment, after the positioning block 20 extends from the receiving groove 105 , the limiting groove 201 interlocks with the fixing plate 18 to form a rigid stop, thereby eliminating the possibility of displacement of the circuit board 2 .

[0093] In one embodiment, the fastener includes a stud 25 and a nut 26. The stud 25 is connected to the outer wall of the box body 101, and the connection hole is set as a waist-shaped hole, and the stud 25 passes through the connection hole. The nut 26 is connected to the stud 25 by a thread.

[0094] In this embodiment, the waist-shaped hole allows the locking plate to float slightly relative to the stud 25 when the lid 102 is closed, eliminating the effects of assembly tolerances. When tightened, the nut 26 forms a surface-to-surface contact with the stud 25. Its self-locking properties resist loosening caused by high-frequency vibration, ensuring a durable and reliable locking force for the lid 102 throughout the entire test cycle. The waist-shaped hole, combined with the locking screw, allows for flexible adjustment of the locking position of the lid 102, adapting to the testing requirements of circuit boards 2 of varying thicknesses. The threaded compression of the locking nut 26 provides a highly rigid connection, effectively suppressing even minor displacement between the lid 102 and the housing 101 during a collision, maintaining the alignment accuracy of the probe 3.

[0095] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the defined scope.

[0096] The above is a detailed introduction to a test device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A testing device, characterized in that: include: The box (1) is provided with a chamber (103) for loading the circuit board (2); A probe (3) comprising a first end and a second end opposite to each other, wherein the first end is suitable for abutting against the circuit board (2); a driving component connected to the second end and adapted to drive the probe (3) toward or away from the circuit board (2); A plurality of sensing components (4) are arranged on the periphery of the probe (3), and are suitable for obtaining radial pressure information of the probe (3), and generating control information based on a comparison result of the obtained radial pressure information with preset pressure information; A control component is electrically connected to the drive component and the sensor component (4), and is adapted to control the drive component to drive the probe (3) to slide according to control information generated by the sensor component (4).

2. The testing device according to claim 1, wherein: Also includes: The cylinder (5) is provided with an inner cavity, the probe (3) is slidably arranged in the inner cavity of the cylinder (5) along the axial direction of the cylinder (5), the box (1) is provided with a mounting hole (104), and the cylinder (5) is arranged in the mounting hole (104); An elastic sleeve (6) is sleeved on the outside of the cylinder (5), the inner wall of the elastic sleeve (6) is connected to the outer wall of the cylinder (5), and the outer wall of the elastic sleeve (6) is connected to the inner wall of the mounting hole (104).

3. The testing device according to claim 2, characterized in that The box (1) comprises: The box body (101) is provided with a cavity, and the cavity is the chamber (103); The box cover (102) is provided on the box body (101) and is suitable for sealing the chamber (103). One end of the box cover (102) is rotatably connected to the box body (101), and the other end of the box cover (102) is detachably connected to the box body (101).

4. The testing device according to claim 3, characterized in that: The drive assembly includes: A first bracket (7) is arranged on a side of the box cover (102) away from the box body (101); A winding roller (8) rotatably connected to the first bracket (7); A driving member (9) is provided on the first bracket (7) and is suitable for driving the winding roller (8) to rotate; A traction rope (10) has one end connected to the winding roller (8) and the other end connected to the second end.

5. The testing device according to claim 4, characterized in that: The driving member (9) comprises: A motor (901) is arranged on the first bracket (7); A first gear (902) is connected to an output end of the motor (901); A second gear (903) is sleeved on the winding roller (8) and connected to the winding roller (8); The synchronous toothed belt (904) is sleeved on the first gear (902) and the second gear (903), and is meshed with the first gear (902) and the second gear (903).

6. The testing device according to claim 4, characterized in that: Also includes: A second bracket (11) is arranged on a side of the box cover (102) away from the box body (101); The guide roller (12) is connected to the second bracket (11), the traction rope (10) is wound around the guide roller (12), and the traction rope (10) is in sliding contact with the outer wall of the guide roller (12).

7. The testing device according to claim 2, characterized in that: Also includes: A first magnetic member (27) and a second magnetic member (13) are mutually attracted, wherein the first magnetic member (27) is arranged on the outer wall of the probe (3), and the second magnetic member (13) is arranged on the inner wall of the cylinder (5); The first magnetic attraction member (27) and the second magnetic attraction member (13) are in an adsorption state, and the probe (3) and the circuit board (2) are in contact with each other.

8. The testing device according to claim 7, characterized in that: A guide groove (501) is provided on the inner wall of the cylinder (5) away from the chamber (103), and the guide groove (501) extends along the axial direction of the cylinder (5). The first magnetic member (27) is provided on the outer wall of the second end, and the first magnetic member (27) is located in the guide groove (501). The first magnetic member (27) and the guide groove (501) are slidably matched. The second magnetic member (13) is provided at one end of the guide groove (501) close to the chamber (103).

9. The testing device according to claim 3, characterized in that: Also includes: A fixing plate (18) is provided on the box cover (102), a connecting hole is provided on the fixing plate (18), and the fixing plate (18) is detachably connected to the box body (101) via a fastener penetrating the connecting hole.

10. The testing device according to claim 3, characterized in that: Also includes: A positioning block (20) is provided on the inner wall of the chamber (103), a receiving groove (105) is provided on the inner wall of the chamber (103), the positioning block (20) is slidably engaged with the inner wall of the receiving groove (105), and the positioning block (20) is suitable for extending from or retracting into the receiving groove (105); A second elastic member (21) is disposed in the receiving groove (105) and has a tendency to drive the positioning block (20) to extend out of the receiving groove (105); The positioning block (20) includes a first surface and a second surface opposite to each other, the first surface of the positioning block (20) faces the box cover (102), the second surface of the positioning block (20) abuts against the circuit board (2), and the distance between the first surface and the second surface of the positioning block (20) gradually decreases along the direction from the accommodating groove (105) to the positioning block (20).

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