Automobile pressure sensor testing device

Abstract

The utility model discloses an automobile pressure sensor testing device, comprising a tool base plate on which a support plate is arranged; the testing assembly comprises a testing seat arranged on the supporting plate, and the testing seat is provided with a plurality of placing grooves used for accommodating automobile pressure sensors; the test execution mechanism comprises a plurality of test cylinders arranged on the tool bottom plate, and the end part of a piston rod of each test cylinder is provided with a test head corresponding to the position of the placement groove; the pressing mechanism comprises a pushing air cylinder arranged on the tool bottom plate, the output end of a piston rod of the pushing air cylinder is connected with a pressing plate through a connecting block, and the front end of the pressing plate is provided with a plurality of pressing openings matched with the automobile pressure sensors in shape. The automobile pressure sensor testing device has the advantages of being efficient, accurate, reliable, high in automation degree and the like, the testing efficiency and quality of the pressure sensor in the automobile manufacturing and maintaining process can be remarkably improved, and powerful support is provided for development of the modern automobile manufacturing industry.

Description

Technical Field

[0001] This utility model relates to the field of automotive sensor testing technology, specifically to an automotive pressure sensor testing device. Background Technology

[0002] In automobile manufacturing and maintenance, pressure sensors on urea pumps play a crucial role, directly impacting vehicle emissions control and fuel efficiency. However, traditional automotive sensor testing methods face numerous challenges. First, testing individual products one by one is not only time-consuming and labor-intensive, but also inefficient, failing to meet the demands of modern automotive manufacturing for high-efficiency production. Second, traditional electrical performance testing relies on manual plugging and unplugging of connectors, a cumbersome process prone to human error, and particularly inadequate for large-scale testing. Furthermore, traditional multi-product clamping methods are complex, costly, and produce inconsistent clamping results, affecting test accuracy and reliability. Therefore, developing a device capable of efficiently, accurately, and reliably testing multiple automotive pressure sensors on urea pumps is of paramount importance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide an automotive pressure sensor testing device.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an automotive pressure sensor testing device, comprising: a tooling base plate on which a support plate is provided; a testing assembly, including a testing seat disposed on the support plate, wherein the testing seat is provided with a plurality of placement slots for accommodating automotive pressure sensors; a testing execution mechanism, including a plurality of testing cylinders disposed on the tooling base plate, wherein the piston rod end of each testing cylinder is provided with a testing head corresponding to the position of the placement slot; and a clamping mechanism, including a pushing cylinder disposed on the tooling base plate, wherein the piston rod output end of the pushing cylinder is connected to a pressure plate through a connecting block, and the front end of the pressure plate is provided with a plurality of clamping ports adapted to the shape of the automotive pressure sensor.

[0005] Preferably, one end of the test base is provided with an air inlet pipe, which is connected to a placement slot at one end of the test base, and adjacent placement slots are connected by a connecting pipe to achieve gas communication.

[0006] Preferably, the test head is provided with three test probes, which are used to contact the positive terminal, negative terminal and voltage output contact of the automotive pressure sensor, respectively.

[0007] Preferably, the support plate is provided with a guide rail located on one side of the test seat, and the bottom of the pressure plate is provided with a guide block that slides with the guide rail.

[0008] Preferably, the support plate is further provided with a proximity switch, and the bottom of the pressure plate is provided with a sensing plate that cooperates with the proximity switch.

[0009] Preferably, the lower end of the pressing port is provided with a U-shaped rubber pad.

[0010] Preferably, the tooling base plate is provided with a plurality of positioning mounting slots, and a cylinder mounting plate for fixing the test cylinder is provided in the positioning mounting slot.

[0011] Preferably, the tooling base plate is provided with a U-shaped protective cover.

[0012] Preferably, the tooling base plate is provided with anti-slip support pads at all four corners of its bottom.

[0013] Preferably, the tooling base plate is provided with a solenoid valve group for controlling a number of test cylinders.

[0014] The advantages of this invention compared to existing technologies are as follows: Firstly, the device enables batch testing, significantly improving testing efficiency and meeting the demands of modern automotive manufacturing for high-efficiency production. Secondly, through its integrated design, multiple automotive pressure sensors can be tested simultaneously without individual operation, saving substantial time and labor costs.

[0015] Secondly, this device employs an automated testing method, avoiding the tedious manual insertion and removal of connectors and reducing the introduction of human error. Both the test execution mechanism and the clamping mechanism are driven by cylinders, ensuring the accuracy and reliability of the test. Simultaneously, the real-time monitoring function of the proximity switch further enhances the degree of automation, ensuring the smooth progress of the testing process.

[0016] Furthermore, the device features a rational structural design; both the test seat and the clamping mechanism are customized according to the shape and size of the automotive pressure sensor, ensuring the accuracy and stability of the test. The use of a U-shaped rubber pad not only provides moderate clamping force but also avoids damage caused by excessive pressure, protecting the integrity of the sensor.

[0017] In summary, the automotive pressure sensor testing device of this application has the advantages of high efficiency, accuracy, reliability, and high degree of automation, which can significantly improve the testing efficiency and quality of pressure sensors in the automotive manufacturing and maintenance process, and provide strong support for the development of the modern automotive manufacturing industry. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an automotive pressure sensor testing device according to this application.

[0019] Figure 2This is a rear view schematic diagram of a vehicle pressure sensor testing device according to this application.

[0020] Figure 3 This is a schematic diagram of the structure of an automotive pressure sensor testing device with the U-shaped protective cover removed, as described in this application.

[0021] Figure 4 This is an enlarged schematic diagram of the test stand structure in this application.

[0022] Figure 5 This is a schematic diagram of the pressure plate in this application.

[0023] Figure 6 This is a schematic diagram of the test cylinder in this application.

[0024] Figure 7 This is a schematic diagram of the structure of the automotive pressure sensor in this application.

[0025] Figure 8 This is a partial schematic diagram of the test vehicle pressure sensor in this application.

[0026] As shown in the figure: 1. Tooling base plate, 2. Support plate, 3. Test seat, 4. Automotive pressure sensor, 5. Placement slot, 6. Test cylinder, 7. Test head, 8. Push cylinder, 9. Connecting block, 10. Pressure plate, 11. Clamping port, 12. Air inlet pipe, 13. Connecting pipe, 14. Test probe, 15. Guide rail, 16. Guide block, 17. Proximity switch, 18. Sensing plate, 19. U-shaped rubber pad, 20. Positioning mounting slot, 21. Cylinder mounting plate, 22. U-shaped protective cover, 23. Anti-slip support pad, 24. Solenoid valve assembly. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0029] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0030] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0031] See attached document Figure 1 - Appendix Figure 8A testing device for an automotive pressure sensor includes: a tooling base plate 1 on which a support plate 2 is provided; a testing assembly including a testing seat 3 on the support plate 2, the testing seat 3 having a plurality of placement slots 5 for accommodating an automotive pressure sensor 4; a testing execution mechanism including a plurality of testing cylinders 6 on the tooling base plate 1, each testing cylinder 6 having a testing head 7 at the end of its piston rod corresponding to the position of the placement slot 5; and a clamping mechanism including a pushing cylinder 8 on the tooling base plate 1, the piston rod output end of the pushing cylinder 8 being connected to a pressure plate 10 via a connecting block 9, the front end of the pressure plate 10 having a plurality of clamping ports 11 adapted to the shape of the automotive pressure sensor 4.

[0032] In this embodiment, an air inlet pipe 12 is cleverly provided at one end of the test holder 3, which is directly connected to the placement slot 5 at one end of the test holder 3. This design ensures that the air source can directly and efficiently enter the placement slot 5, providing the necessary test air pressure for the automotive pressure sensor 4. In addition, the adjacent placement slots 5 are connected by a connecting pipe 13, which not only simplifies the air path layout but also ensures that the air pressure in each placement slot 5 is uniform, thereby improving the accuracy and reliability of the test.

[0033] The test head 7, as a key component of the test execution mechanism, is equipped with three precision test probes 14. These three probes are used to contact the positive terminal, negative terminal, and voltage output contact of the automotive pressure sensor 4, respectively, to achieve comprehensive testing of the electrical performance of the automotive pressure sensor 4.

[0034] To improve the smoothness and accuracy of the movement of the pressure plate 10, a guide rail 15 is provided on the support plate 2, while the bottom of the pressure plate 10 is equipped with a guide block 16 that slides with the guide rail 15. This design not only enables the pressure plate 10 to maintain a stable trajectory during movement but also reduces errors caused by shaking. Furthermore, both the guide rail 15 and the guide block 16 are made of wear-resistant and corrosion-resistant materials to ensure stability and reliability during long-term use.

[0035] To monitor the positioning status of the pressure plate 10 in real time, a proximity switch 17 is installed on the support plate 2, while a sensing plate 18 that cooperates with the proximity switch 17 is mounted on the bottom of the pressure plate 10. When the pressure plate 10 moves to the preset position, the sensing plate 18 triggers the proximity switch 17, thereby sending a signal to the control system indicating that the pressure plate 10 has been positioned correctly. This design not only improves the automation level of the test but also ensures the accuracy and safety of the test process.

[0036] A U-shaped rubber pad 19 is cleverly designed at the lower end of the clamping port 11. This design not only provides moderate elastic clamping force, ensuring that the ear plates on both sides of the automotive pressure sensor 4 are firmly clamped, but also avoids damage caused by excessive pressure. The material and thickness of the U-shaped rubber pad 19 have been carefully selected to ensure its stability and durability during use. At the same time, its shape and size are closely matched to the external contour of the automotive pressure sensor 4, further improving the accuracy and reliability of the test.

[0037] To ensure that the test probe 14 can accurately contact the positive, negative, and voltage output contacts of the automotive pressure sensor 4, the installation position of each test cylinder 6 must be accurate. In this application, the tooling base plate 1 is provided with several positioning mounting slots 20, and cylinder mounting plates 21 for fixing the test cylinders 6 are provided within the positioning mounting slots 20. This design facilitates the overall installation and positioning of multiple test cylinders 6, eliminating the need for individual calibration and positioning of each test cylinder 6, thus simplifying the installation process of the test cylinders 6 and ensuring their stability and reliability during operation.

[0038] The fixture base plate 1 is equipped with a U-shaped protective cover 22. This design not only provides necessary protection for the test area, preventing external interference and damage, but also ensures the safety and reliability of the test process. In addition, the U-shaped protective cover 22 is made of transparent acrylic material, making it easy to observe the test process.

[0039] To improve the stability of the testing device during operation, anti-slip support pads 23 are installed at all four corners of the bottom of the fixture base plate 1. This design not only ensures the stability of the testing device during placement but also avoids errors caused by shaking.

[0040] A solenoid valve assembly 24 for controlling multiple test cylinders 6 is installed on the tooling base plate 1. This design not only simplifies the control process of the test cylinders 6, but also improves the automation and accuracy of the test.

[0041] Working Principle: This automotive pressure sensor testing device is ingeniously designed, integrating efficient testing and stable clamping functions, and is suitable for batch testing of automotive pressure sensors 4. At the start of operation, the user needs to precisely embed multiple automotive pressure sensors 4 to be tested into the respective placement slots 5 on the test base 3. These placement slots 5 are customized according to the sensor size, ensuring that the automotive pressure sensors 4 are securely placed and easily positioned.

[0042] Once the vehicle pressure sensor 4 is in place, the piston rod of the push cylinder 8 is activated, causing the pressure plate 10 to move smoothly along a preset trajectory toward the test seat 3. The clamping port 11 at the front end of the pressure plate 10 is shaped to closely match the external contour of the vehicle pressure sensor 4. In addition, the U-shaped rubber pad 19 installed at the lower end of the clamping port provides a moderate elastic clamping force, which ensures that the ear plates on both sides of the vehicle pressure sensor 4 are firmly clamped, while avoiding damage caused by excessive pressure.

[0043] While the pressure plate 10 presses the automotive pressure sensor 4, each automotive pressure sensor 4 under test is connected to an external power source via a power cord in preparation for performance testing. Furthermore, an air source is introduced into the testing system through the air intake pipe 12 and its connected air intake connector. The air source first enters through the air intake pipe 12, and then the connecting pipe 13 enables communication between adjacent placement slots 5, ensuring that each automotive pressure sensor 4 receives uniform air pressure. This air pressure acts on the interior of the automotive pressure sensor 4, causing it to generate a corresponding voltage output, providing the conditions for subsequent voltage detection.

[0044] Next, the solenoid valve assembly 24 is connected to multiple test cylinders 6 via corresponding air circuits. This connection structure is existing technology, so its specific connection method need not be described in detail. When the solenoid valve assembly 24 receives a command, it controls the multiple test cylinders 6 to start sequentially. The piston rod of the test cylinder 6 extends, pushing the test head 7 at its end towards the sensor. Each test head 7 is equipped with three precision test probes 14, which are respectively aligned with and contact the positive terminal, negative terminal, and voltage output contact of the sensor. Once the probes and contacts form stable contact, the test head 7 stops moving, ready for voltage measurement.

[0045] During the testing phase, different pressure environments can be simulated by adjusting the air source pressure, thereby obtaining multiple sets of pressure sensing data. These data are collected in real time by test probe 14 and compared with preset performance range values ​​to evaluate whether the performance parameters of the automotive pressure sensor 4 meet the standards.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A testing device for an automotive pressure sensor, characterized in that, include: Tooling base plate (1), on which a support plate (2) is provided; The test assembly includes a test seat (3) disposed on a support plate (2), wherein the test seat (3) is provided with a plurality of placement slots (5) for accommodating the automotive pressure sensor (4); The test execution mechanism includes several test cylinders (6) set on the tooling base plate (1), and each test cylinder (6) has a test head (7) at the end of the piston rod corresponding to the position of the placement groove (5); The clamping mechanism includes a push cylinder (8) mounted on the tooling base plate (1). The piston rod output end of the push cylinder (8) is connected to a pressure plate (10) via a connecting block (9). The front end of the pressure plate (10) is provided with several clamping ports (11) that are adapted to the shape of the automotive pressure sensor (4).

2. The automotive pressure sensor testing device according to claim 1, characterized in that, One end of the test seat (3) is provided with an air inlet pipe (12), which is connected to the placement slot (5) at one end of the test seat (3), and the adjacent placement slots (5) are connected by a connecting pipe (13) to achieve gas communication.

3. The automotive pressure sensor testing device according to claim 1, characterized in that, The test head (7) is provided with three test probes (14), which are used to contact the positive terminal, negative terminal and voltage output contact of the automotive pressure sensor (4) respectively.

4. The automotive pressure sensor testing device according to claim 1, characterized in that, The support plate (2) is provided with a guide rail (15) located on one side of the test seat (3), and the bottom of the pressure plate (10) is provided with a guide block (16) that slides with the guide rail (15).

5. The automotive pressure sensor testing device according to claim 1, characterized in that, The support plate (2) is also provided with a proximity switch (17), and the bottom of the pressure plate (10) is provided with a sensing plate (18) that cooperates with the proximity switch (17).

6. The automotive pressure sensor testing device according to claim 1, characterized in that, The lower end of the compression port (11) is provided with a U-shaped rubber pad (19).

7. The automotive pressure sensor testing device according to claim 1, characterized in that, The tooling base plate (1) is provided with a plurality of positioning mounting slots (20), and the positioning mounting slots (20) are provided with cylinder mounting plates (21) for fixing the test cylinder (6).

8. The automotive pressure sensor testing device according to claim 1, characterized in that, The tooling base plate (1) is provided with a U-shaped protective cover (22).

9. The automotive pressure sensor testing device according to claim 1, characterized in that, The tooling base plate (1) is provided with anti-slip support pads (23) at all four corners of its bottom.

10. The automotive pressure sensor testing device according to claim 1, characterized in that, The tooling base plate (1) is provided with a solenoid valve group (24) for controlling several test cylinders (6).

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