A position sensor performance test fixture
Patent Information
- Application Number
- CN202522189058.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-16
AI Technical Summary
随着汽车电子产品的多样化发展，传感器结构日趋复杂，品种不断增多，现有专用测试设备难以适应多品种、小批量的生产与研发需求，导致设备重复投入、利用率低、固定资产成本高等问题
[0011]本实用新型具备高度柔性与可调性，可快速适配不同结构的位置传感器，适用于新品研发和小批量多品种生产；通过上下双可调机构与模块化设计，提升设备利用率和测试效率。
Smart Images
Figure CN224906004U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor testing technology, and in particular to a tooling for testing the performance of a position sensor. Background Technology
[0002] Currently, most testing equipment for electronic throttle position sensors is specialized, capable of performing performance tests only on a specific structure or model. With the diversification of automotive electronics, sensor structures are becoming increasingly complex and the variety of types is constantly increasing. Existing specialized testing equipment struggles to meet the demands of multi-variety, small-batch production and R&D, leading to problems such as redundant investment, low utilization rates, and high fixed asset costs. Therefore, there is an urgent need for a general-purpose performance testing device that is flexible in structure, easy to adjust, and applicable to various position sensors. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a position sensor performance testing fixture.
[0004] The objective of this utility model is achieved through the following technical solution: A position sensor performance testing fixture includes a worktable, an upper adjustable mechanism, a lower adjustable mechanism, and a positioning fixture. A support platform is provided in the middle of the worktable, and the positioning fixture is mounted on the support platform. A lifting cylinder is provided on the top of the worktable, and the piston rod of the lifting cylinder is connected to the upper adjustable mechanism. The upper adjustable mechanism is located above the support platform, and the lower adjustable mechanism is located below the support platform. Both the upper and lower adjustable mechanisms are provided with test socket insertion and removal mechanisms. A mounting bracket is provided on one side of the upper adjustable mechanism, and a second lifting cylinder is provided on the mounting bracket. The cylinder rod of the second lifting cylinder is connected to a mounting plate, and a cylinder bracket is provided on the mounting plate. A clamping cylinder is provided on the cylinder bracket, and a drive motor is provided on the mounting plate. The output end of the drive motor is connected to a magnet base, and a magnet is provided on the magnet base.
[0005] Specifically, the adjustable mechanism includes an X-axis drive mechanism and a Y-axis drive mechanism. The Y-axis drive mechanism is mounted on a fixed plate, and the fixed plate is connected to the piston rod of the lifting cylinder. The X-axis drive mechanism is connected to the Y-axis drive mechanism.
[0006] Specifically, the test socket insertion and removal mechanism includes a third lifting cylinder, a connecting plate, and a pressure plate. The connecting plate is connected to the piston rod of the third lifting cylinder. A sliding column is slidably arranged on the connecting plate, and a spring is sleeved on the sliding column. The pressure plate is connected to the sliding column, and the pressure plate is used to install the test socket.
[0007] Specifically, the structure of the upper adjustable mechanism is the same as that of the lower adjustable mechanism.
[0008] Specifically, the X-axis drive mechanism includes a base plate, supports, sliding blocks, optical axes, and lead screws. Two supports are disposed opposite to each other on the base plate, and two optical axes are connected between the supports. The sliding blocks are slidably disposed on the optical axes and are provided with threaded sleeves. One end of the lead screw is rotatably connected to one of the supports, and the other end is threadedly connected to the threaded sleeve. One end of the lead screw is connected to a turntable. The structure of the X-axis drive mechanism is the same as that of the Y-axis drive mechanism.
[0009] Specifically, the sliding block has a groove along the sliding direction, and protrusions are formed on both sides of the groove. One of the protrusions has two notches along the sliding direction perpendicular to the sliding block, and a clamping block is formed between the two notches. A sliding hole is provided on the protrusion, and the sliding block is slidably connected to the optical axis through the sliding hole. The clamping block has a slot along the sliding direction of the sliding block to divide the clamping block into a left clamping block and a right clamping block. The slot connects to the sliding hole. A threaded hole is provided on the left clamping block, and a sliding hole is provided on the right clamping block. The block also includes a pull rod, which is slidably inserted into the sliding hole and threadedly connected to the threaded hole of the left clamping block. The pull rod is a stepped shaft, and the step of the pull rod abuts against the side wall of the right clamping block. The pull rod is connected to a throttle handle.
[0010] This utility model has the following advantages:
[0011] This utility model is highly flexible and adjustable, and can be quickly adapted to position sensors with different structures. It is suitable for new product development and small-batch, multi-variety production. Through the upper and lower dual adjustable mechanisms and modular design, the utilization rate of equipment and testing efficiency are improved. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the testing fixture of this utility model;
[0013] Figure 2 This is a schematic diagram of the upper adjustable mechanism of this utility model;
[0014] Figure 3 This is a schematic diagram of the test socket insertion and removal mechanism of this utility model;
[0015] Figure 4 This is a schematic diagram of the X-axis drive mechanism of this utility model;
[0016] Figure 5 A schematic diagram of the sliding block structure of this utility model;
[0017] Figure 6 This is a cross-sectional view of the sliding block structure of this utility model;
[0018] In the diagram: 1-Workbench, 2-Upper Adjustable Mechanism, 3-Lower Adjustable Mechanism, 4-Positioning Fixture, 5-Support Platform, 6-Lifting Cylinder, 7-Test Socket Insertion / Removal Mechanism, 8-Mounting Bracket, 9-Second Lifting Cylinder, 10-Mounting Plate, 11-Clamping Cylinder, 12-Drive Motor, 13-Magnet Seat, 14-X-Axis Drive Mechanism, 15-Y-Axis Drive Mechanism, 16-Fixing Plate, 17-Third Lifting Cylinder, 18-Connecting Plate, 19-Pressure Plate, 20-Sliding Column, 21-Spring, 22-Installation Test Socket, 23-Base Plate, 24-Support, 25-Sliding Block, 26-Optical Axis, 27-Lead Screw, 28-Turntable, 29-Screw Sleeve, 30-Groove, 31-Boss, 32-Notch, 33-Slot, 34-Pull Rod, 35-Left Clamping Block, 36-Right Clamping Block, 37-Turn Handle. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0023] like Figures 1 to 6As shown, a position sensor performance testing fixture includes a worktable 1, an upper adjustable mechanism 2, a lower adjustable mechanism 3, and a positioning fixture 4. A support platform 5 is provided in the middle of the worktable 1, and the positioning fixture 4 is mounted on the support platform 5. A lifting cylinder 6 is provided on the top of the worktable 1, and the piston rod of the lifting cylinder 6 is connected to the upper adjustable mechanism 2. The upper adjustable mechanism 2 is located above the support platform 5, and the lower adjustable mechanism 3 is located below the support platform 5. Both the upper adjustable mechanism 2 and the lower adjustable mechanism 3 are provided with test socket insertion and removal mechanisms 7. A mounting bracket 8 is provided on one side of the upper adjustable mechanism 2, and a second lifting cylinder 9 is provided on the mounting bracket 8. The cylinder rod of the second lifting cylinder 9 is connected to a mounting plate 10. A clamping cylinder 11 is provided on the mounting plate 10, and a drive motor 12 is provided on the mounting plate 10. The output end of the drive motor 12 is connected to a magnet base 13, and a magnet is provided on the magnet base 13. In this embodiment, when the chip and pin of the sensor under test are on the same side, the sensor is placed on the positioning fixture 4. Then, the control system controls the second lifting cylinder 9 to lower the mounting plate 10 into position. Then, the control cylinder 11 is activated, and its piston rod presses against the sensor to clamp it. Simultaneously, the second lifting cylinder 9 extends its piston rod, causing the drive motor 12 on the mounting plate 10 to descend. A magnet base 13 is detachably connected to the output shaft of the drive motor 12. The bottom of the magnet base 13 has a circular magnet formed by two semi-circular magnets joined together. The bottom surfaces of the circular magnet are respectively half-circular... The magnet, with its circular S and N poles, is lowered to a set position by the second lifting cylinder 9, forming a magnetic induction zone. Then, the lifting cylinder 6 operates, lowering the test socket insertion / removal mechanism 7 on the upper adjustable mechanism 2, bringing the test socket 22 on the mechanism into contact with the pins of the sensor under test. A test signal is output from the PLC to the industrial control computer, which collects and tests the sensor's output voltage via a circuit board, completing the performance test of the first magnetic induction zone. Then, the drive motor 12 rotates the magnet by a certain angle to perform the performance test of the second magnetic induction zone. The PLC outputs a signal again, and the industrial control computer performs the voltage test. This invention's testing fixture, in conjunction with the industrial control computer, receives and processes the sensor's output voltage signal collected by the data acquisition card in real time, automatically completing the performance test data analysis for each magnetic induction zone.The data acquisition process is continuous and accurate, with test results displayed in real time and automatically stored, effectively supporting rapid product performance assessment and data traceability, significantly improving the automation level and data reliability of the testing process. When the sensor under test has a chip and pin-on-the-side structure, the second lifting cylinder 9 is controlled to lower the mounting plate 10 into position. Then, the clamping cylinder 11 is controlled to press the piston rod of the clamping cylinder 11 against the sensor to clamp it, preventing vibration or displacement from affecting data accuracy during testing. Then, the test socket insertion / removal mechanism 7 on the adjustable mechanism 3 is controlled to make the test socket 22 on the test socket insertion / removal mechanism 7 contact the pin of the sensor under test. The test signal is then output to the industrial control computer via the PLC. The industrial control computer collects and tests the sensor output voltage via a circuit board, completing the performance test of the first magnetic induction zone. Then, it drives motor 12 to rotate the magnet by a certain angle, typically 180° (the rotation angle parameter can be adjusted according to sensor testing requirements), and performs the performance test of the second magnetic induction zone. The PLC outputs a signal again, and the industrial control computer performs a voltage test, thus completing the sensor's performance test under different magnetic induction directions and comprehensively verifying the consistency of the sensor's magnetic induction response. When the test socket 22 contacts the pin of the sensor under test, the position of the test socket insertion / removal mechanism 7 can be adjusted using the upper adjustable mechanism 2 and the lower adjustable mechanism 3 to align the test socket 22 on the test socket insertion / removal mechanism 7 with the pin on the sensor under test. Depending on the type of sensor, a matching positioning fixture 4 can be replaced. The positioning fixture 4 is connected to the support platform 5 via quick-change bolts. The distance between the magnet and the sensor under test can be adjusted by replacing the magnet holder 13 according to the sensor's magnetic induction sensitivity requirements to achieve detection.
[0024] Furthermore, the upper adjustable mechanism 2 includes an X-axis drive mechanism 14 and a Y-axis drive mechanism 15. The Y-axis drive mechanism 15 is mounted on a fixed plate 16, which is connected to the piston rod of the lifting cylinder 6. The X-axis drive mechanism 14 is connected to the Y-axis drive mechanism 15. The structure of the upper adjustable mechanism 2 is the same as that of the lower adjustable mechanism 3. In this embodiment, the upper adjustable mechanism 2 and the lower adjustable mechanism 3 have the same structure, both including an X-axis drive mechanism 14 and a Y-axis drive mechanism 15. The X-axis drive mechanism 14 and the Y-axis drive mechanism 15 drive the test socket insertion and removal mechanism 7 to move along the X-axis and Y-axis in the horizontal plane, thereby adjusting the position of the test socket insertion and removal mechanism 7.
[0025] Furthermore, the test socket insertion and removal mechanism 7 includes a third lifting cylinder 17, a connecting plate 18, and a pressure plate 19. The connecting plate 18 is connected to the piston rod of the third lifting cylinder 17. A sliding column 20 is slidably disposed on the connecting plate 18. A spring 21 is sleeved on the sliding column 20. The pressure plate 19 is connected to the sliding column 20 and is used to install the test socket 22. In this embodiment, the third lifting cylinder 17 is fixed on the upper adjustable mechanism 2 and the upper adjustable mechanism 3 respectively. By controlling the operation of the third lifting cylinder 17, the piston rod of the third lifting cylinder 17 drives the connecting plate 18 to extend. Since the sliding column 20 is connected to the pressure plate 19, a limit block is provided at one end of the sliding column 20, and a spring 21 is provided on the sliding column 20. When the third lifting cylinder 17 drives the test socket 22 on the pressure plate 19 to contact the pin of the sensor under test, the sliding column 20 can slide in the through hole of the connecting plate 18, so that the spring 21 between the connecting plate 18 and the pressure plate 19 is compressed. This can ensure that the test socket 22 and the pin of the sensor under test are in full contact and will not damage the pin of the sensor under test. Since a limit block is provided at one end of the sliding column 20, the sliding column can be restricted from coming out of the through hole of the connecting plate 18. There are two sliding columns 20, which are respectively provided at both ends of the pressure plate 19.
[0026] Furthermore, the X-axis drive mechanism 14 includes a base plate 23, a support 24, a sliding block 25, an optical axis 26, and a lead screw 27. Two supports 24 are arranged opposite to each other on the base plate 23, and two optical axes 26 are connected between the supports 24. The sliding block 25 is slidably arranged on the optical axis 26, and a threaded sleeve 29 is provided on the sliding block 25. One end of the lead screw 27 is rotatably connected to one of the supports 24, and the other end is threadedly connected to the threaded sleeve 29. One end of the lead screw 27 is connected to a turntable 28. The structure of the X-axis drive mechanism 14 is the same as that of the Y-axis drive mechanism 15. The base plate 23 of the X-axis drive mechanism 14 is connected to the sliding block 25 of the Y-axis drive mechanism 15. In this embodiment, when it is necessary to adjust the position of the test socket insertion and removal mechanism 7, the turntable 28 is rotated. The rotation of the turntable 28 drives the lead screw 27 to rotate. The rotation of the lead screw 27 drives the screw sleeve 29 to move along the length of the lead screw 27. The screw sleeve 29 drives the sliding block 25 to slide along the optical axis 26. The third lifting cylinder 17 of the test socket insertion and removal mechanism 7 is fixed on the sliding block 25. By rotating the turntable 28 of the X-axis drive mechanism 14 and the Y-axis drive mechanism 15 respectively, the test socket insertion and removal mechanism 7 can be moved in the horizontal plane.
[0027] Furthermore, the sliding block 25 is provided with a groove 30 along the sliding direction, and protrusions 31 are formed on both sides of the groove 30. One of the protrusions 31 is provided with two notches 32 along the sliding direction perpendicular to the sliding block 25, and a clamping block is formed between the two notches 32. The protrusion 31 is provided with a sliding hole, and the sliding block 25 is slidably connected to the optical axis 26 through the sliding hole. The clamping block is provided with a slot 33 along the sliding direction of the sliding block 25 to divide the clamping block into a left clamping block 35 and a right clamping block 36. The slot 33 is connected to the sliding hole. The left clamping block 35 is provided with a threaded hole, and the right clamping block 36 is provided with a sliding hole. It also includes a pull rod 34. The pull rod 34 is slidably inserted into the sliding hole and threadedly connected to the threaded hole of the left clamping block 35. The pull rod 34 is a stepped shaft, and the step of the pull rod 34 abuts against the side wall of the right clamping block 36. The pull rod 34 is connected to a throttle 37. In this embodiment, in order to lock the position of the test socket insertion and removal mechanism 7 after it has been moved into place, a slot 33 is made on the boss 31 so that the two left clamping blocks 35 and the right clamping block 36 can open and close. This clamps the optical shaft 26 in the sliding hole, thereby fixing the position of the test socket insertion and removal mechanism 7. After the test socket insertion and removal mechanism 7 has been moved into place, the handle 37 is rotated. One end of the pull rod 34 is threadedly connected to the left clamping block 35. When the handle 37 is rotated, the pull rod 34 is rotated. The rotation of the pull rod 34 pulls the left clamping block 35 and the right clamping block 36 closer together, thus clamping the optical shaft 26. When it is necessary to adjust the position of the test socket insertion and removal mechanism 7, the handle 37 is rotated in the opposite direction to release the optical shaft 26, thereby adjusting the position of the test socket insertion and removal mechanism 7.
[0028] In this embodiment, the lifting cylinder 6, the second lifting cylinder 9, the pressing cylinder 11, the drive motor 12, and the third lifting cylinder 17 are all connected to the industrial control computer and controlled by the industrial control computer.
[0029] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.
Claims
1. A fixture for testing the performance of a position sensor, characterized in that: The device includes a worktable (1), an upper adjustable mechanism (2), a lower adjustable mechanism (3), and a positioning fixture (4). A support platform (5) is provided in the middle of the worktable (1). The positioning fixture (4) is provided on the support platform (5). A lifting cylinder (6) is provided on the top of the worktable (1). The piston rod of the lifting cylinder (6) is connected to the upper adjustable mechanism (2). The upper adjustable mechanism (2) is located above the support platform (5). The lower adjustable mechanism (3) is located below the support platform (5). The upper adjustable mechanism (2) and the lower adjustable mechanism (4) are connected to the support platform (5). The adjustable mechanism (3) is equipped with a test socket plugging and unplugging mechanism (7). The upper adjustable mechanism (2) is equipped with a mounting bracket (8) on one side. The mounting bracket (8) is equipped with a second lifting cylinder (9). The cylinder rod of the second lifting cylinder (9) is connected to a mounting plate (10). The mounting plate (10) is equipped with a clamping cylinder (11). The mounting plate (10) is equipped with a drive motor (12). The output end of the drive motor (12) is connected to a magnet seat (13). The magnet seat (13) is equipped with a magnet.
2. The position sensor performance testing fixture according to claim 1, characterized in that: The upper adjustable mechanism (2) includes an X-axis drive mechanism (14) and a Y-axis drive mechanism (15). The Y-axis drive mechanism (15) is mounted on a fixed plate (16). The fixed plate (16) is connected to the piston rod of the lifting cylinder (6). The X-axis drive mechanism (14) is connected to the Y-axis drive mechanism (15).
3. The position sensor performance testing fixture according to claim 2, characterized in that: The test socket insertion and removal mechanism (7) includes a third lifting cylinder (17), a connecting plate (18) and a pressure plate (19). The connecting plate (18) is connected to the piston rod of the third lifting cylinder (17). A sliding column (20) is slidably arranged on the connecting plate (18). A spring (21) is sleeved on the sliding column (20). The pressure plate (19) is connected to the sliding column (20). The pressure plate (19) is used to install the test socket (22).
4. The position sensor performance testing fixture according to claim 2, characterized in that, The structure of the upper adjustable mechanism (2) is the same as that of the lower adjustable mechanism (3).
5. The position sensor performance testing fixture according to claim 2, characterized in that: The X-axis drive mechanism (14) includes a base plate (23), a support (24), a sliding block (25), an optical axis (26), and a lead screw (27). Two supports (24) are arranged opposite to each other on the base plate (23), and two optical axes (26) are connected between the supports (24). The sliding block (25) is slidably arranged on the optical axis (26), and a threaded sleeve (29) is provided on the sliding block (25). One end of the lead screw (27) is rotatably connected to one of the supports (24), and the other end is threadedly connected to the threaded sleeve (29). One end of the lead screw (27) is connected to a turntable (28). The structure of the X-axis drive mechanism (14) is the same as that of the Y-axis drive mechanism (15). The base plate (23) of the X-axis drive mechanism (14) is connected to the sliding block (25) of the Y-axis drive mechanism (15).
6. The position sensor performance testing fixture according to claim 5, characterized in that: The sliding block (25) has a groove (30) along the sliding direction. A boss (31) is formed on both sides of the groove (30). One of the bosses (31) has two notches (32) along the sliding direction perpendicular to the sliding block (25). A clamping block is formed between the two notches (32). A sliding hole is provided on the boss (31). The sliding block (25) is slidably connected to the optical axis (26) through the sliding hole. A slot (33) is provided on the clamping block along the sliding direction of the sliding block (25). The clamping block is divided into a left clamping block (35) and a right clamping block (36). A slot (33) is made to connect the sliding hole. The left clamping block (35) is provided with a threaded hole, and the right clamping block (36) is provided with a sliding hole. The clamping block also includes a pull rod (34). The pull rod (34) is slidably inserted into the sliding hole and threadedly connected to the threaded hole of the left clamping block (35). The pull rod (34) is a stepped shaft. The step of the pull rod (34) abuts against the side wall of the right clamping block (36). The pull rod (34) is connected to a throttle (37).