Test fixture and test apparatus

Abstract

The present disclosure relates to a test fixture and test device for clamping and positioning a target device, comprising a bearing part, a clamping part and a driving assembly. The present disclosure drives the clamping part to change between a first position and a second position through an abutting part. When the abutting part is in the first position, a first clamping part on the abutting part is in contact with the target device. An opening and closing elastic element acts on the abutting part or the clamping part and keeps the clamping part in the first position, thereby clamping or pressing the target device. The present disclosure is suitable for target devices of multiple specifications. Meanwhile, an overload protection assembly makes the process of the power output end approaching and acting on the bearing part more stable.

Description

Technical Field

[0001] This disclosure relates to the field of semiconductor component testing technology, and in particular to a testing fixture and testing device. Background Technology

[0002] When mass-producing high and low temperature tests on packaged product particles, it is necessary to use a testing device of the corresponding size of the product to load, transfer, and press them onto the corresponding testing station on the testing machine.

[0003] Therefore, it is necessary to provide a testing device for detecting particles in packaged products. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail in this disclosure. This overview is not intended to limit the scope of the claims.

[0005] To overcome the problems existing in the related technologies, this disclosure provides a testing fixture and testing device.

[0006] According to an embodiment of this disclosure, a test fixture is provided for clamping and positioning a target device, wherein the target device has a part to be tested, and the test fixture includes: A support portion for supporting the target device, wherein the support portion is provided with an opening for the part to be tested to be exposed; A clamping member is movably connected to the bearing portion, and the clamping member includes a first clamping portion; A driving component is connected to the clamping member, the driving component being used to drive the clamping member to switch between at least a first position and a second position. When the clamping member is in the first position, the clamping member is used to clamp the target device between the first clamping part and the carrying part. When the clamping member is in the second position, the clamping member is used to release the target device.

[0007] According to some embodiments of this disclosure, the carrier portion includes a second clamping portion, and when the clamping member is in the first position, the first clamping portion and the second clamping portion are respectively attached to both sides of the target device.

[0008] According to some embodiments of this disclosure, the support portion includes a side wall and a bottom wall, the bottom wall is provided with a stepped hole, the target device can be accommodated in the large diameter section of the stepped hole, the surface of the stepped hole forms the second clamping portion, the small diameter section of the stepped hole forms the opening, the driving component is disposed on the side wall, and the first clamping portion extends through the inner surface of the side wall.

[0009] According to some embodiments of this disclosure, the clamping member includes a connected driving segment and a clamping segment, the driving segment being used to connect to the driving assembly, the first clamping portion being located in the clamping segment, and the clamping segment being disposed at an angle to the driving segment.

[0010] According to some embodiments of this disclosure, the driving assembly includes an abutment portion hinged to the clamping member and used to drive the clamping member to rotate about an axis, and an opening and closing elastic member for driving the abutment portion to switch between a third position and a fourth position. The clamping member is configured to slide relative to the bearing portion. When the abutment portion is in the third position, the clamping member is in the first position, and when the abutment portion is in the fourth position, the clamping member is in the second position.

[0011] According to some embodiments of this disclosure, the drive assembly includes an abutting portion for abutting the clamping member and for driving the clamping member to rotate about an axis, and an opening and closing elastic member for maintaining the clamping member in the first position or the second position.

[0012] According to some embodiments of this disclosure, the abutting portion is slidably connected to the clamping member and engages with the clamping member in the deformation direction of the opening and closing elastic member. The opening and closing elastic member is fixed to the abutting portion and is used to drive the abutting portion to switch between a third position and a fourth position. When the abutting portion is in the fourth position, the clamping member is in the second position.

[0013] According to some embodiments of this disclosure, the clamping member is provided with a buffer layer for attaching to the target device.

[0014] According to some embodiments of this disclosure, there are multiple drive components that are evenly distributed circumferentially.

[0015] According to a second aspect of the present disclosure, a testing apparatus is provided, including a power mechanism and the aforementioned testing fixture. The power mechanism includes a power output end, which is used to abut against the support portion and press the target device onto the tester.

[0016] According to some embodiments of this disclosure, the power mechanism includes a power input end and an overload protection component. The overload protection component connects the power input end and the power output end and is used to provide the stroke required for the power input end to generate displacement relative to the power output end.

[0017] According to some embodiments of this disclosure, there are multiple overload protection components; there are multiple test clamps.

[0018] According to some embodiments of this disclosure, the overload protection component includes an overload elastic element, which connects the power input terminal and the power output terminal.

[0019] According to some embodiments of this disclosure, the overload protection component includes an overload guide, which is fixedly connected to the power input end or the power output end and is used to provide guidance for the overload elastic member.

[0020] According to some embodiments of this disclosure, the power input end is provided with an overload accommodating cavity for accommodating the overload guide.

[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: the clamping member changes between a first position and a second position by the abutment part. When the abutment part is in the first position, the first clamping part on the abutment part is in contact with the target device. The opening and closing elastic element acts on the abutment part or the clamping member and keeps the clamping member in the first position, thereby realizing the clamping or pressing of the target device. It is applicable to target devices of multiple specifications. At the same time, the overload protection component makes the process of the power output end approaching and acting on the bearing part more stable.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] Figure 1 This is a schematic diagram of the structure of a testing device in the background art.

[0025] Figure 2 This is a schematic diagram of a structure according to an exemplary embodiment.

[0026] Figure 3 This is a schematic diagram of a structure according to an exemplary embodiment.

[0027] Figure 4 This is a schematic diagram of a structure according to an exemplary embodiment.

[0028] Figure 5 This is a schematic diagram illustrating the structure of a power mechanism according to another exemplary embodiment.

[0029] Figure 6 This is a schematic diagram illustrating the structure of an overload protection component according to an exemplary embodiment.

[0030] Figure 7 This is a schematic diagram illustrating an overload elastic member structure according to an exemplary embodiment.

[0031] Figure 8 This is a schematic diagram illustrating the clamping member in a second position according to an exemplary embodiment.

[0032] Figure 9 This is a schematic diagram illustrating the distribution of clamping components according to an exemplary embodiment.

[0033] Figure Labels 1. Power unit; 11. Frame; 12. Load spring; 13. Spring inner support rod; 14. Pressure block; 15. Carrier; 16. Testing equipment; 2. Clamping component; 21. Drive section; 22. Clamping section; 3. Drive assembly; 31. Guide rod; 311. Guide part; 32. Opening and closing elastic element; 321. Return spring; 33. Limiting ring; 34. Limiting groove; 4. Carrier; 41. Overpressure protection boss; 42. Receiving groove; 43. First through groove; 44. Guide groove; 45. Second through groove; 46. Force application channel; 5. Tester; 6. Target device; 7. Power mechanism; 71. Connecting platform; 72. Overload protection assembly; 721. Overload protection rod; 722. Overload elastic element; 73. Power output end; 731. Blocking platform; 732. Transition platform; 7311. Overload receiving cavity. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions in the disclosed embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0035] As stated in the background art, and referring to Figure 1The testing device for detecting packaged product particles in the related technology includes a power unit 1, a frame 11, a load spring 12, a spring inner support rod 13, a pressure block 14, and a carrier 15. The frame 11 is fixedly connected to the power unit 1 to limit the maximum stroke of the power unit 1. The pressure block 14 is fixedly connected to the spring inner support rod 13, and the load spring 12 is sleeved on the spring inner support rod 13. At the same time, the load spring 12 is fixedly connected to the frame 11. The frame 11 has a cavity for the spring inner support rod 13 to slide along the moving direction of the pressure block 14. The carrier 15 is used to support the target device 6 to be tested. The testing device 16 is placed at the bottom of the carrier 15. The bottom of the carrier 15 has a hole for the target device 6 to contact the testing device 16. During the testing of target device 6, the power unit 1 presses down on the frame 11 and drives the pressure block 14 to move downward. As the pressure block 14 moves downward, it contacts the target device 6, and the load spring 12 begins to contract. Once the frame 11 abuts against the top surface of the carrier 15, the pressure block 14 presses the target device 6 firmly onto the carrier 15, ensuring that the target device 6 is in contact with the testing equipment 16 for testing. However, the applicability of this existing testing device is limited. When dealing with a target device 6 that extends far beyond the bottom surface of the pressure block 14, the pressure block 14 presses directly onto the central area of ​​the target device 6, causing the edges of the target device 6 to be supported only by the carrier 15. This can easily lead to edge warping of the target device 6.

[0036] Based on this, this disclosure provides a test fixture for clamping a target device. The abutment portion drives the clamping member to change between a first position and a second position. When the abutment portion is in the first position, the first clamping portion on the abutment portion is in contact with the target device. The opening and closing elastic element acts on the abutment portion or the clamping member and keeps the clamping member in the first position, thereby achieving clamping or pressing of the target device 6. It is suitable for target devices of multiple specifications. At the same time, the overload protection component makes the process of the power output end approaching and acting on the bearing portion more stable.

[0037] This disclosure provides a test fixture in exemplary embodiments, such as... Figure 2 As shown, Figures 2 to 4 This is a schematic diagram of the fixture used for testing. Figures 5 to 9 This is a schematic diagram of the testing setup. The following is in conjunction with... Figures 2 to 4 The fixture will be introduced.

[0038] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.

[0039] Reference Figure 2 This disclosure provides an exemplary embodiment of a test fixture for clamping and positioning a target device 6, wherein the target device 6 has a part to be tested, and the test fixture includes: The support section is used to support the target device 6, and the support section is provided with an opening for the part to be tested to be exposed.

[0040] The clamping member 2 is movably connected to the bearing part, and the clamping member 2 includes a first clamping part.

[0041] The drive assembly 3 is connected to the clamping member 2. The drive assembly 3 is used to drive the clamping member 2 to switch between at least a first position and a second position. When the clamping member 2 is in the first position, the clamping member 2 is used to clamp the target device 6 between the first clamping part and the carrying part. When the clamping member 2 is in the second position, the clamping member 2 is used to release the target device 6.

[0042] For example, when assembling the above structure, the support part serves as the mounting base for other structures. In this embodiment, the support part is the carrier 4. The carrier 4 has a first through slot 43 for accommodating the drive assembly 3 and a second through slot 45 for accommodating the clamping member 2. The drive assembly 3 is placed in the first through slot 43, and the clamping member 2 is installed in the second through slot 45. The end of the clamping member 2 near the drive assembly 3 abuts against the drive assembly 3, and the end of the clamping member 2 away from the drive assembly 3 extends out of the carrier 4 from the opening of the second through slot 45. The first clamping part is disposed on this end extending out of the carrier 4. When the end of the clamping member 2 extending out of the carrier 4 is in a horizontal position, the first clamping part can be used to adhere to the target device 6 and press the target device 6 into a certain position. At this time, the clamping member 2 is in the first position. When the clamping member 2 is tilted by the action of the drive assembly 3, the first clamping part moves away from the target device 6, and the clamping member 2 is in the open state and in the second position.

[0043] In this embodiment, the structure of the carrier 4, which serves as the support unit, is as follows: Figure 2 As shown, the part to be tested on the target device 6 is located at the bottom end of the target device 6, and the opening on the carrier 4 for the part to be tested on the target device 6 to be exposed is located on one side of the bottom end of the carrier.

[0044] In an exemplary embodiment of this disclosure, the structure of the carrier 4, which serves as the support unit, is as follows: Figure 5 As shown, the carrier 4 has a cylindrical structure with an opening at the bottom, and the part to be tested on the target device 6 is exposed from the opening at the bottom of the carrier 4.

[0045] In an exemplary embodiment of this disclosure, reference is made to Figure 2 The support portion includes a second clamping portion. When the clamping member 22 is in the first position, the first clamping portion and the second clamping portion are respectively attached to both sides of the target device 66.

[0046] For example, the support portion includes a side wall and a bottom wall. A stepped hole is provided on the bottom wall. The target device 6 can be accommodated in the large-diameter section of the stepped hole. The surface of the stepped hole forms a second clamping portion. The small-diameter section of the stepped hole forms an opening. The driving component 3 is disposed on the side wall, and the first clamping portion extends through the inner surface of the side wall.

[0047] In this embodiment, the bottom end of the carrier 4 is provided with an overpressure protection boss 41 protruding towards the first clamping part. The overpressure protection boss 41 and the body of the carrier 4 are arranged in a stepped manner, that is, a receiving groove 42 for mounting the target device 6 is formed between the overpressure protection boss 41 and the first clamping part. The overpressure protection boss 41 forms a second clamping part adapted to the first clamping part. When the clamping member 2 is in the clamping state, the first clamping part and the second clamping part are respectively attached to the opposite side walls of the target device 6. In addition to providing a second clamping part for clamping the target device 6, the overpressure protection boss 41 can also provide overpressure protection for the detection device 16. After the target device 6 is clamped, it comes into contact with the detection device 16. When the pressure on the target device 6 is too high, the pressure on the target device 6 will be transmitted to the overpressure protection boss 41 instead of the detection device 16, reducing the possibility of damage to the detection device 16 due to excessive pressure.

[0048] In an exemplary embodiment of this disclosure, reference is made to Figure 2 The clamping member 2 includes a connected drive section 21 and a clamping section 22. The drive section 21 is used to connect with the drive assembly 3. The first clamping part is located in the clamping section 22, and the clamping section 22 is set at an angle to the drive section 21.

[0049] For example, the drive section 21 and the clamping section 22 are set at an obtuse angle, so that the clamping member 2 is in an open-up position. The two ends of the drive section 21 are located inside the first through groove 43 and the second through groove 45, respectively. The end of the drive section 21 located in the first through groove 43 is connected to the drive assembly 3. The two ends of the clamping section 22 are located inside the second through groove 45 and outside the carrier 4, respectively. The first clamping part is disposed on the end of the clamping section 22 located outside the carrier 4.

[0050] In this embodiment, the included angle between the driving section 21 and the clamping section 22 can be adjusted according to different working conditions; similarly, in other embodiments, the clamping member 2 can also be arc-shaped, S-shaped, or C-shaped, etc.

[0051] In an exemplary embodiment of this disclosure, reference is made to Figure 2 The drive assembly 3 includes an abutment portion hinged to the clamping member 2 and used to drive the clamping member 2 to rotate about an axis, and an opening and closing elastic member 32 for driving the abutment portion to switch between a third position and a fourth position. The clamping member 2 is configured to slide relative to the bearing portion. When the abutment portion is in the third position, the clamping member 2 is in the first position, and when the abutment portion is in the fourth position, the clamping member 2 is in the second position.

[0052] For example, the drive assembly 3 includes a guide rod 31 built into the first through groove 43 and slidably connected to the carrier 4 in a vertical direction, and an opening and closing elastic member 32 built into the first through groove 43 and sleeved on the guide rod 31. In this embodiment, the bottom end of the guide rod 31 forms an abutment portion and is hinged to one end of the drive section 21. The opening and closing elastic member 32 includes an opening and closing spring whose top end is fixedly connected to the guide rod 31. A limiting ring 33 sleeved on the guide rod 31 is fixed in the first through groove 43. The limiting ring 33 is fixed on the inner wall of the first through groove 43 and located at the bottom end of the opening and closing elastic member 32. In this embodiment, the limiting ring 33 is welded to the inner wall of the first through groove 43, and the bottom end of the opening and closing spring abuts against the top surface of the limiting ring 33. The inner wall of the second through groove 45 is recessed into the carrier 4 to form a horizontally arranged guide groove 44. A guide post (not shown in the figure) adapted to the guide groove 44 is provided at the connection between the drive section 21 and the clamping section 22. The guide post is inserted into the guide groove 44 and can slide along the length direction of the guide groove 44.

[0053] When the opening / closing elastic element 32 is in its natural state, the top end of the guide rod 31 protrudes from the top surface of the carrier 4. At this time, the clamping section 22 is horizontally positioned and its bottom surface is in contact with the carrier 4, i.e., the clamping member 2 is in the first position, and the abutment portion on the guide rod 31 is in the third position. At this time, the first clamping portion and the second clamping portion are positioned opposite each other. By pressing down on the guide rod 31, the guide rod 31 moves into the first through groove 43, while compressing the opening / closing elastic element 32. Since the bottom end of the guide rod 31 is hinged to one end of the drive section 21, and the clamping member 2 can slide freely in the guide groove 44, the guide rod 31 moves down while simultaneously driving the end of the clamping member 2 located inside the first through groove 43 to move downward. Simultaneously, the end of the clamping member 2 extending out of the second through groove 45 moves upward and reaches the second position, realizing the opening of the clamping member 2. At this time, the abutment portion is in the fourth position. Similarly, after the downward pressure applied to the guide rod 31 is removed, the opening and closing elastic element 32 drives the clamping member 2 to reset, that is, the clamping member 2 returns to the first position, so that the first clamping part is in contact with the target device 6.

[0054] It should be understood that the top of the guide rod 31 being exposed from the top surface of the carrier 4 is a specific implementation that includes various situations. For example, the top of the guide rod 31 is higher than the top surface of the carrier 4; or, the top of the guide rod 31 is flush with the top surface of the carrier 4; or, the top of the guide rod 31 is located below the top surface of the carrier 4, that is, the top of the first through groove 43 is connected to the outside from the top surface of the carrier 4.

[0055] In an exemplary embodiment of this disclosure, reference is made to Figure 2A guide portion 311 protruding outward is fixed on the guide rod 31. The outer wall of the guide portion 311 abuts against the inner wall of the first through groove 43, serving to limit and guide the guide rod 31. Similarly, the opening and closing elastic member 32 can be directly sleeved on the guide rod 31, with the top end of the opening and closing elastic member 32 abutting against the bottom surface of the guide portion 311. In this embodiment, the guide portion 311 includes a boss integrally formed on the guide rod 31.

[0056] In an exemplary embodiment of this disclosure, reference is made to Figure 3 The drive assembly 3 includes an abutting part for abutting the clamping member 2 and for driving the clamping member 2 to rotate about an axis, and an opening and closing elastic member 32 for maintaining the clamping member 2 in a first position or a second position.

[0057] For example, the clamping member 2 is hinged to the carrier 4, and the pivot of the clamping member 2 is located at the connection between the driving section 21 and the clamping section 22. The driving assembly 3 includes a guide rod 31 built into the first through groove 43 and slidably connected to the carrier 4 vertically, and an opening and closing elastic member 32 sleeved on the pivot and connecting the clamping member 2 and the carrier 4. In this embodiment, the bottom end of the guide rod 31 forms an abutment portion and abuts against one end of the driving section 21. The opening and closing elastic member 32 includes a torsion spring sleeved on the pivot of the clamping member 2. When the torsion spring is in its natural state, the clamping member 2 is located in the first position, that is, the clamping section 22 is horizontally arranged, and the first clamping portion and the second clamping portion are arranged opposite to each other.

[0058] In this embodiment, a limiting ring 33 is fixed in the first through groove 43 and sleeved on the guide rod 31. The limiting ring 33 provides support and guidance for the movement of the guide rod 31. In this embodiment, the limiting ring 33 is integrally formed with the carrier 4.

[0059] When the opening / closing elastic element 32 is in its natural state, the top end of the guide rod 31 protrudes from the top surface of the carrier 4. At this time, the clamping section 22 is horizontally positioned and its bottom surface is in contact with the carrier 4, meaning the clamping member 2 is in the first position, with the first clamping part and the second clamping part positioned opposite each other. By pressing down on the guide rod 31, the guide rod 31 moves into the first through groove 43. Since the bottom end of the guide rod 31 is in contact with the end of the drive section 21, and the clamping member 2 is hinged to the carrier 4, the guide rod 31 moves downward, simultaneously causing one end of the drive section 21 located inside the first through groove 43 to move downward. Simultaneously, the end of the clamping member 2 extending out of the second through groove 45 moves upward and reaches the second position, thus opening the clamping member 2. Similarly, after the downward pressure applied to the guide rod 31 is removed, the opening / closing elastic element 32 drives the clamping member 2 to reset, meaning the clamping member 2 returns to the first position, allowing the first clamping part to contact the target device 6.

[0060] In an exemplary embodiment of this disclosure, a return spring 321 is sleeved on the guide rod 31. The top end of the return spring 321 is fixedly connected to the guide rod 31, and the bottom end of the return spring 321 abuts against the top surface of the limiting ring 33. When the return spring 321 is in its natural state, the top end of the guide rod 31 protrudes from the top surface of the carrier 4. The return spring 321 can apply an upward driving force to the guide rod 31 during the switching process of the clamping member 2 from the second position to the first position, so that the elastic force of the opening and closing elastic member 32 is more used to adjust the posture of the clamping member 2, so that the clamping member 2 can switch to the first position more quickly. At the same time, it also reduces the workload of the opening and closing elastic member 32 and protects the opening and closing elastic member 32.

[0061] In an exemplary embodiment of this disclosure, reference is made to Figure 4 The abutment part is slidably connected to the clamping member 2 and engages with the clamping member 2 in the deformation direction of the opening and closing elastic member 32. The opening and closing elastic member 32 is fixed to the abutment part and is used to drive the abutment part to switch between the third position and the fourth position. When the abutment part is in the fourth position, the clamping member 2 is in the second position.

[0062] For example, a limiting ring 33 is fixedly sleeved on the guide rod 31 inside the first through groove 43, and the limiting ring 33 is fixedly connected to the inner wall of the first through groove 43. The opening and closing elastic member 32 in this embodiment includes an opening and closing spring sleeved on the guide rod 31. The top end of the opening and closing spring is fixedly connected to the guide rod 31, and the bottom end is fixedly connected to the limiting ring 33. The bottom end of the guide rod 31 forms an abutment part and has a horizontally arranged limiting groove 34. The limiting groove 34 is a through groove and is located above the bottom surface of the guide rod 31. The clamping member 2 is hinged to the carrier 4, and the rotation axis of the clamping member 2 is located at the connection between the driving section 21 and the clamping section 22. The end of the driving section 21 is integrally formed with a limiting post (not shown in the figure) inserted into the limiting groove 34. Under the guiding action from the limiting groove 34, the limiting post can slide freely inside the limiting groove 34 along the length direction of the limiting groove 34.

[0063] When the opening / closing elastic element 32 is in its natural state, the top end of the guide rod 31 protrudes from the top surface of the carrier 4. At this time, the clamping section 22 is horizontally positioned and its bottom surface is in contact with the carrier 4, i.e., the clamping member 2 is in the first position and the abutment part is in the third position. At this time, the first clamping part and the second clamping part are positioned opposite each other. By pressing down on the guide rod 31, the guide rod 31 moves into the first through groove 43. At this time, as the guide rod 31 moves down, it drives one end of the drive section 21 located inside the first through groove 43 to move downward. Simultaneously, the drive section 21 slides along the length direction of the limiting groove 34. At the same time, the end of the clamping member 2 extending out of the second through groove 45 moves upward and reaches the second position, realizing the opening of the clamping member 2. At this time, the abutment part is in the fourth position. Similarly, after the downward pressure applied to the guide rod 31 is removed, the opening / closing elastic element 32 drives the clamping member 2 to reset, i.e., the clamping member 2 returns to the first position, which is used to make the first clamping part fit with the target device 6.

[0064] In an exemplary embodiment of this disclosure, the friction between the limiting groove 34 and the clamping member 2 is relatively large when the clamping member 2 is opened and closed. Therefore, the abutment part can be configured as a connecting block that is detachably connected (e.g., threaded connection) to the guide rod 31. The connecting block has a limiting groove 34 and is adapted to the clamping member 2. Similarly, a bearing can be added to the limiting post of the clamping member 2 to reduce the degree of wear between the limiting post and the limiting groove 34 when the clamping member 2 is opened and closed.

[0065] It should be understood that the above-described method of sleeved the opening and closing spring, which serves as the opening and closing elastic element 32, on the guide rod 31 is only one specific embodiment. In other embodiments, the opening and closing spring, which serves as the opening and closing elastic element 32, can also be set at the bottom end of the guide rod 31 to lift the guide rod 31 and maintain it in the third position.

[0066] In an exemplary embodiment of this disclosure, reference is made to Figure 4 The clamping member 2 is provided with a buffer layer for attaching to the target device 6.

[0067] For example, a buffer layer is fixed to the bottom surface of the clamping section 22. The buffer layer is located at the first clamping part. In this embodiment, the buffer layer is a rubber pad adhered to the clamping section 22. Using a rubber pad as a buffer layer can protect the target device 6 and reduce the possibility of damaging the edges or surface of the target device 6 when the clamping section 22 acts on it. Similarly, in other embodiments, the buffer layer can also be a pad (or block, etc.) made of other materials that can buffer or weaken hard contact.

[0068] In an exemplary embodiment of this disclosure, there are multiple drive components 3 that are evenly distributed circumferentially.

[0069] Reference Figure 5The carrier 4, serving as the support unit, has a cylindrical structure with an open bottom. Four drive components 3 (two shown in the figure) are built into the inner wall of the carrier 4 and are evenly distributed circumferentially around its central axis. This even distribution of drive components 3 provides relatively complete clamping of the target device 6's edge, allowing the target device 6 to maintain its current posture stably, reducing the possibility of warping on one or more sides of the target device 6, and also reducing the possibility of damage caused by excessive force on one side of the target device 6 when clamping only one side. In other embodiments, the number of drive components 3 can be different, such as three or five.

[0070] Reference Figure 5 and Figure 6 In another aspect of the present disclosure, a testing apparatus is provided, including a tester 5 and a power mechanism 7, as well as the aforementioned test fixture. The power mechanism 7 includes a power output end 73, which is used to abut against the bearing portion and press the target device 6 onto the tester 5.

[0071] For example, refer to Figure 5 and Figure 6 The tester 5 is located below the power mechanism 7 and corresponds to the position of the power mechanism 7. The power mechanism 7 includes a power output end 73, which is used to move towards the carrier 4 and press against the carrier 4, thereby driving the carrier 4 to press down and press the target device 6 against the tester 5.

[0072] In this embodiment, the abutment portion is built into the carrier 4, and the carrier 4 is provided with a force application channel 46 for an external instrument to extend into and abut against the guide rod 31. The force application channel 46 is vertically opened on the top surface of the carrier 4 and corresponds to the position of the guide rod 31. Before the power mechanism 7 applies force to the drive assembly 3, an external instrument is inserted into the force application channel 46 and abuts against the top end of the guide rod 31. As the external instrument is pressed down, the guide rod 31 enters the first through groove 43. As the guide rod 31 moves down, the clamping member 2 switches from the first position to the second position, and the clamping member 2 is opened when it reaches the second position. After the clamping member 2 is opened, the second clamping portion on the overpressure protection boss 41 is exposed for placing the target device 6. After the target device 6 is placed on the second clamping part, the external instrument moves upward. Simultaneously, the guide rod 31 moves upward under the action of the opening and closing elastic member 32. The clamping member 2 switches from the second position to the first position until it stops at the first position, thereby closing the clamping member 2. That is, the first clamping part and the second clamping part are respectively attached to the opposite sides of the target device 6.

[0073] After the above actions are completed, the carrier 4, which carries the target device 6, is moved between the power mechanism 7 and the tester 5 and placed above the tester 5. At this time, the target device 6 faces the tester 5 through the opening at the bottom of the carrier 4, and the carrier is supported by the external plug (or other structure for connecting with the tester to achieve detection) on the target device 6. By pressing down the power output terminal 73 on the power mechanism 7, the carrier 4 moves down together with the target device 6, finally realizing the insertion action between the target device 6 and the tester 5, achieving the connection between the target device 6 and the tester 5, and enabling subsequent testing.

[0074] In an exemplary embodiment of this disclosure, reference is made to Figure 6 and Figure 7 The power mechanism 7 includes a power input end and an overload protection component 72. The overload protection component 72 is used to connect the power input end and the power output end 73, and to provide the stroke required for the power input end to generate displacement relative to the power output end 73.

[0075] For example, the power mechanism 7 also includes a power input terminal and an overload protection component 72. The power input terminal is used to connect to a power supply device (not shown in the figure) and transmit the driving force provided by the power supply device to the power output terminal 73 through the overload protection component 72.

[0076] In this embodiment, the power input end includes a connecting platform 71, on which a connecting component, such as a bolt, can be fixedly connected for compatibility with a coupling or other power transmission device. An overload protection component 72 is fixedly connected to the bottom surface of the connecting platform 71 and is used to fix the transmission rod 73, which serves as the power output end 73, to the connecting platform 71. The overload protection component 72 can be a damper. The overload protection component 72 not only connects the connecting platform 71 to the power output end 73, enabling the connecting platform to drive the power output end 73 to transmit driving force to the carrier 4, pressing the target device 6 against the tester 5, but also provides displacement to the connecting platform 71 when it experiences greater downward pressure than expected. This prevents the pressure from being directly transmitted to the carrier 4 when the connecting platform 71 experiences downward pressure exceeding the expected range, thus protecting the target device 6 and the tester 5. Simultaneously, a significant change in the distance between the connecting platform 71 and the power output end 73 can alert the operator to control the downward pressure applied to the connecting platform 71, improving the stability of the overall testing process.

[0077] It should be understood that the overload protection component mentioned above, including the damper, is only one specific implementation. In other embodiments, the overload protection component 72 may also be other structures that can extend and retract and have a connecting effect, such as a pneumatic rod.

[0078] In an exemplary embodiment of this disclosure, reference is made to Figure 7 and Figure 8 The overload protection component 72 includes an overload elastic element 722, which is used to connect the power input terminal and the power output terminal 73.

[0079] For example, the overload elastic element 722 includes an overload spring fixedly connected to the bottom surface of the connecting platform 71, with the top end of the overload spring fixedly connected to the connecting platform 71 and the bottom end fixedly connected to the power output end 73.

[0080] It should be understood that the above-mentioned selection of an overload spring as the overload elastic element 722 is only one specific embodiment. In other embodiments, other structures with deformation capabilities may be used, such as rubber blocks, gas springs, etc.

[0081] In an exemplary embodiment of this disclosure, reference is made to Figure 7 and Figure 8 The overload protection assembly 72 includes an overload guide for being fixedly connected to the power input or power output 73 and for providing guidance for the overload elastic member 722.

[0082] For example, the overload guide includes a telescopic rod, the top end of which is fixedly connected to the connecting platform 71, and the bottom end of which is fixedly connected to the power output end 73, with an overload spring sleeved on the telescopic rod.

[0083] Since the connection platform 71 and the power output end 73 are connected by an overload elastic element 722, lateral displacement is likely to occur between the connection platform 71 and the power output end 73 during the movement of the connection platform 71 toward the vehicle 4, making it difficult for the power output end 73 and the vehicle 4 to match. The added telescopic rod can limit the lateral displacement between the connection platform 71 and the power output end 73, so that the power output end 73 can be stably matched with the vehicle 4. At the same time, it reduces the deformation of the overload elastic element 722 in the non-deformation direction and extends the service life of the overload elastic element 722.

[0084] In an exemplary embodiment of this disclosure, reference is made to Figure 7 and Figure 8 An overload accommodating cavity 7311 is provided on the power input end to accommodate the overload guide.

[0085] In an exemplary embodiment, a gap is left between the carrier 4 and the tester 5, and the target device 6 is adapted to connect with the tester 5 through an opening at the bottom of the carrier 4. An overpressure protection structure is provided on the clamping member 2. This overpressure protection structure is used to rotate the clamping member 2 to a second position when the reverse force of the target device 6 on the clamping section 22 exceeds a certain value, thereby preventing excessive pressure on the target device 6 and the tester from causing damage. The overpressure protection structure in this embodiment includes an opening and closing elastic member 32. When the downward pressure from the power output end 73 exceeds a certain value, the clamping force between the target device 6 and the tester 5 becomes excessive. The target device 6 exerts an upward thrust on the clamping section 22, causing the clamping section 22 to move to the second position. That is, the opening and closing elastic member 32 is compressed, providing the target device 6 with a vertical displacement, reducing the possibility of damage to the target device 6 when the downward pressure from the power output end 73 is excessive.

[0086] For example, the power output end 73 includes a transition platform 732 and a blocking platform 731. The bottom end of the overload spring, which serves as an overload elastic member 722, is fixedly connected to the top surface of the transition platform 732, and the blocking platform 731 is fixedly connected to the bottom surface of the transition platform 732. In this embodiment, the overload guide includes an overload protection rod 721 fixedly connected to the bottom surface of the connecting platform 71. The overload spring is sleeved on the overload protection rod 721. The transition platform 732 has an overload receiving cavity 7311 for accommodating the overload guide, and the blocking platform 731 closes the bottom opening of the overload receiving cavity 7311.

[0087] After the connecting platform 71, which serves as the power input end, is connected to the power supply equipment (such as a hydraulic cylinder), the connecting platform 71 drives the overload protection component 72 and the power output end 73 to move closer to the carrier 4 until the blocking platform 731 abuts against the top surface of the carrier 4. Subsequently, the carrier 4, carrying the target device 6, moves closer to the tester 5 under the action of the power output end 73 until the target device 6 and the tester 5 are properly matched. After the target device 6 and the tester 5 are properly matched and the connecting platform 71 continues to move downward, the overload elastic element 722 is compressed and begins to contract. Simultaneously, the overload protection rod 721, which serves as an overload guide, continues to move downward with the connecting platform 71. The overload protection rod 721 enters the overload receiving cavity 7311. At this time, the distance between the connecting platform 71 and the transition platform 732 becomes significantly smaller, which can serve as a warning.

[0088] In one exemplary embodiment, a distance sensor may be added between the connecting platform 71 and the transition platform 732, and the distance sensor may be connected to an external processor and an audible and visual alarm device to trigger an alarm when the distance between the connecting platform 71 and the transition platform enters a preset threshold range.

[0089] In an exemplary embodiment of this disclosure, reference is made to Figure 8 and Figure 9There are multiple overload protection components 72 and multiple test fixtures.

[0090] For example, the carrier 4 is a hollow cuboid box. The space inside the carrier 4 is connected to the outside through the top and bottom surfaces. The top opening of the carrier 4 serves as the placement entrance for the target device 6, through which the target device 6 is placed onto the overpressure protection protrusion 41 inside the carrier 4. The bottom opening of the carrier 4 serves as a channel for connecting the target device 6 to the tester 5. The tester 5 is placed below the carrier 4 and corresponds to the part to be tested on the target device 6. There are four driving components 3 and four clamping components 2, and the clamping components 2 are distributed in a dot matrix pattern corresponding to the driving components 3, so as to simultaneously clamp the four edges of the target device 6.

[0091] The evenly distributed drive components 3 can provide relatively complete clamping of the edge of the target device 6, so that the target device 6 can maintain its current posture stably, reducing the possibility of warping on one or more sides of the target device 6, and at the same time reducing the possibility of damage caused by excessive force on one side of the target device 6 when clamping on one side.

[0092] Corresponding to the drive components, there are also four overload protection components 72, which are distributed in a dot matrix pattern corresponding to the drive components 3. Similarly, the multiple overload protection components 72 can provide comprehensive and stable support and connection for the power input end and the power output end 73.

[0093] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0094] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0095] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A testing fixture for clamping and positioning a target device, wherein the target device has a part to be tested, characterized in that, The test fixture includes: A support portion for supporting the target device, wherein the support portion is provided with an opening for the part to be tested to be exposed; A clamping member is movably connected to the bearing portion, and the clamping member includes a first clamping portion; A driving component is connected to the clamping member, the driving component being used to drive the clamping member to switch between at least a first position and a second position. When the clamping member is in the first position, the clamping member is used to clamp the target device between the first clamping part and the carrying part. When the clamping member is in the second position, the clamping member is used to release the target device. The bearing portion includes a carrier, the drive assembly is housed in the carrier, the end of the clamping member connected to the drive assembly is located inside the carrier, the end of the clamping member away from the drive assembly extends to the outside of the carrier, and the first clamping portion is disposed on the end of the clamping member extending to the outside of the carrier; The supporting part includes a second clamping part. When the clamping member is in the first position, the first clamping part and the second clamping part are respectively attached to both sides of the target device. The supporting part includes a side wall and a bottom wall. A stepped hole is provided on the bottom wall. The target device can be accommodated in the large diameter section of the stepped hole. The surface of the stepped hole forms the second clamping part. The small diameter section of the stepped hole forms the opening. The driving component is disposed on the side wall, and the first clamping part extends through the inner surface of the side wall.

2. The test fixture according to claim 1, characterized in that, The clamping member includes a connected drive section and a clamping section. The drive section is used to connect to the drive assembly. The first clamping part is located in the clamping section, and the clamping section is set at an angle to the drive section.

3. The test fixture according to claim 1, characterized in that, The driving assembly includes an abutment portion hinged to the clamping member and used to drive the clamping member to rotate about an axis, and an opening and closing elastic member for driving the abutment portion to switch between a third position and a fourth position. The clamping member is configured to slide relative to the bearing portion. When the abutment portion is in the third position, the clamping member is in the first position, and when the abutment portion is in the fourth position, the clamping member is in the second position.

4. The test fixture according to claim 1, characterized in that, The drive assembly includes an abutting portion for abutting the clamping member and for driving the clamping member to rotate about an axis, and an opening and closing elastic member for maintaining the clamping member in the first position or the second position.

5. The test fixture according to claim 4, characterized in that, The abutting part is slidably connected to the clamping member and engages with the clamping member in the deformation direction of the opening and closing elastic member. The opening and closing elastic member is fixed to the abutting part and is used to drive the abutting part to switch between the third position and the fourth position. When the abutting part is in the fourth position, the clamping member is in the second position.

6. The test fixture according to claim 1, characterized in that, The clamping member is provided with a buffer layer for attaching to the target device.

7. The test fixture according to claim 1, characterized in that, The drive components are multiple and evenly distributed along the circumference.

8. A testing apparatus, characterized in that, The device includes a tester and a power mechanism, as well as a test fixture according to any one of claims 1-7, wherein the power mechanism includes a power output end for abutting against the support portion and pressing the target device onto the tester.

9. The testing apparatus according to claim 8, characterized in that, The power mechanism includes a power input end and an overload protection component. The overload protection component connects the power input end and the power output end and is used to provide the stroke required for the power input end to generate displacement relative to the power output end.

10. The testing apparatus according to claim 9, characterized in that, There are multiple overload protection components; there are multiple test clamps.

11. The testing apparatus according to claim 9, characterized in that, The overload protection component includes an overload elastic element, which connects the power input terminal and the power output terminal.

12. The testing apparatus according to claim 11, characterized in that, The overload protection component includes an overload guide, which is fixedly connected to the power input end or the power output end and is used to guide the overload elastic element.

13. The testing apparatus according to claim 12, characterized in that, The power input end is provided with an overload accommodating cavity for accommodating the overload guide.

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