Function test tool for coil actuator
By designing a coil actuator functional test tool including a work carrier plate, a fixed plate, a rotor and a test probe, the problem of low positioning accuracy of the existing test device is solved, and coil detection with higher accuracy is achieved, and the error judgment rate is reduced.
Patent Information
- Application Number
- CN202420137362.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The functional testing devices of existing coil actuators have low positioning accuracy, resulting in high test failure rate, and there is a large error between the detection results and actual performance.
A functional test tool for a coil actuator is designed, including a work carrier plate, a fixing plate, a rotor and a test probe. By setting the rotor to generate waveforms when it rotates, it simulates the rotation of the fan blades in the car, uses a test probe to detect the magnetic flux of the coil, and corrects the coil position through the fixed plate to improve detection accuracy.
By simulating the rotational waveform of the fan blades in the car, the normal working state of the sensor in the coil actuator can be effectively detected, and by detecting magnetic flux and position correction, the accuracy of coil detection is significantly improved and the error judgment rate is reduced.
Smart Images
Figure CN222636183U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of functional testing tooling for coil actuators, and in particular to a functional testing tooling for coil actuators. Background Art
[0002] The coil actuator is a component installed on the car to identify the rotation speed of the fan blades on the car to determine the heat dissipation status of the vehicle during normal operation. The principle used is to measure the speed by detecting the change of the magnetic field. The magnetic field source is usually installed on the fan blades or rotor. When the blades or rotor rotate, the magnetic field will also change. The sensor senses the change in the magnetic field and outputs a corresponding pulse signal. The speed can be calculated based on the pulse frequency.
[0003] After the current coil actuator is assembled, it needs to be removed from the production line and placed on the testing equipment to determine whether the coil actuator functions normally after assembly. However, during the test, the current testing device has low positioning accuracy, and the operator may not place it properly, resulting in a high test failure rate. As a result, the test results are quite different from the actual performance of the product, resulting in a large error.
[0004] Therefore, a functional testing tool for a coil actuator is still needed to solve the above problems. Utility Model Content
[0005] The present application provides a functional testing tool for a coil actuator that solves the above-mentioned problem.
[0006] The purpose of this application is achieved by the following technical solutions:
[0007] A functional test fixture for a coil actuator includes: a working carrier plate, a fixing plate, a rotor, and a test probe. The working carrier plate is provided with a mounting slot. The fixing plate is connected to the working carrier plate and is close to the mounting slot, and is used to fix the part to be detected. The rotor is rotatably connected in the mounting slot, and generates a waveform that can be captured by a sensor on the part to be detected during rotation. A clearance hole is provided at the center of the rotor, and is spaced apart from the part to be detected. The test probe is located in the clearance hole, and is used to detect the magnetic flux of the part to be detected.
[0008] In one embodiment, a position sensor is further included, and the position sensor is located at the bottom of the working carrier plate and is used to identify the position of the part to be detected.
[0009] In one embodiment, it also includes a lower workbench and a driving motor connected to the lower workbench, the connecting shaft of the rotor is connected to the lower workbench and extends from the lower workbench, and the rotating shaft of the driving motor is connected to the connecting shaft through a transmission belt.
[0010] In one embodiment, the rotor has six protrusions distributed in a circular array, and two adjacent protrusions are spaced apart. The rotor generates six PWM waveforms when it rotates one circle.
[0011] In one embodiment, four support columns are connected between the lower workbench and the work carrier plate.
[0012] In one embodiment, the test probe is a magnetic flux test probe, and the detection range of the magnetic flux test probe is 0-1000 mT.
[0013] Compared with the prior art, the beneficial effects of this application include at least:
[0014] By setting up a rotor that can simulate the fan blades in a car and generate a waveform when rotating, the waveform of the fan blades inside the car is simulated to detect whether the sensor in the coil actuator can work normally, thereby achieving the purpose of detecting the sensor. In addition, a test probe is used to confirm whether the magnetic flux of the coil is normal, and a fixed plate is set to correct the position of the coil, thereby improving the detection accuracy of the coil and preventing the coil actuator from being misjudged due to non-standard placement. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of a functional test fixture for a coil actuator according to an embodiment of the present application;
[0016] Figure 2 It is a structural schematic diagram of a functional test tool for a coil actuator according to an embodiment of the present application from one perspective;
[0017] Figure 3 This is a structural schematic diagram from another perspective of the functional testing tooling of the coil actuator in an embodiment of the present application.
[0018] In the figure: 1. test probe; 2. fixing plate; 3. rotor; 4. working carrier plate; 5. position sensor; 6. support column; 7. lower workbench; 8. connecting shaft; 9. transmission belt; 10. driving motor. DETAILED DESCRIPTION
[0019] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.
[0020] The words expressing position and direction described in this application are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all changes are included in the scope of protection of this application.
[0021] Reference Figure 1-3 The present application provides a functional test fixture for a coil actuator, comprising: a working carrier plate 4, a fixing plate 2, a rotor 3 and a test probe 1.
[0022] The working carrier plate 4 is provided with a mounting groove. The fixing plate 2 is connected to the working carrier plate 4 and close to the mounting groove, and is used to fix the part to be detected. The fixing plate 2 is, for example, two plates of the same shape and having an arc groove. The plates are fixed on both sides of the top of the mounting groove to fix the two sides of the part to be detected from both sides. The shape of the part to be detected includes a coil body, and the coils are fixed on both sides to play an auxiliary role to prevent the position of the coil from being inaccurately placed. The rotor 3 is rotatably connected in the mounting groove, and generates a waveform that can be obtained by the sensor on the part to be detected during rotation. A clearance hole is opened at the center of the rotor 3, and is spaced from the part to be detected. The test probe 1 is located in the clearance hole and is used to detect the magnetic flux of the part to be detected. The part to be detected includes two parts, a coil part and a sensor part. The coil part identifies whether the magnetic flux inside the coil is within a preset range through the test probe 1, thereby determining the integrity of the coil. When the rotor 3 rotates, it generates a waveform similar to that of the fan blades. When the sensor in the tested part is powered on, if the generated waveform can be obtained, the product meets the standard, otherwise it does not. Under the clamping of the fixed plate 2, the operator is prevented from making errors in the final test results due to the coil being placed away from the preset position.
[0023] In one embodiment, a position sensor 5 is further included, and the position sensor 5 is located at the bottom of the working carrier plate 4 and is used to identify the position of the to-be-detected part. The position sensor 5 can identify whether the coil is placed between the fixing plates 2, and plays a role in assisting positioning.
[0024] In a specific embodiment, it also includes a lower workbench 7 and a driving motor 10 connected to the lower workbench 7, the connecting shaft 8 of the rotor 3 is connected to the lower workbench 7 and extends from the lower workbench 7, and the rotating shaft of the driving motor 10 is connected to the connecting shaft 8 through a transmission belt 9. The driving motor 10 is located below the workbench, which can prevent the magnetic field generated by the motor when working from interfering with the detection result of the magnetic field generated by the top part to be tested.
[0025] More specifically, the rotor 3 has six protrusions distributed in a circular array, and two adjacent protrusions are spaced apart, and the rotor 3 generates six PWM waveforms when it rotates one circle. When the rotor 3 rotates, the six protrusions simulate the six PWM waveforms of the fan blades when they rotate, thereby simulating the working state and working environment, improving the pertinence of the sensor connected to the coil, and improving the detection effect.
[0026] In one embodiment, four support columns 6 are connected between the lower workbench 7 and the working carrier plate 4. The four support columns 6 can stably support the working carrier plate 4 and the lower workbench 7 to prevent the top working carrier plate 4 from tipping over.
[0027] In another embodiment, the test probe 1 is a magnetic flux test probe 1, and the detection range of the magnetic flux test probe 1 is 0-1000 mT. The test probe 1 can identify the magnetic flux of the coil.
[0028] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the application without departing from the principles and purpose of the present application. All of these changes should fall within the scope of protection of the claims of the present application.
Claims
1. A functional test tool for a coil actuator, characterized in that: include: A working carrier plate, wherein a mounting groove is provided on the working carrier plate; A fixing plate, the fixing plate is connected to the working carrier plate and is close to the mounting groove, and is used to fix the part to be detected; A rotor, the rotor is rotatably connected in the mounting groove, and generates a waveform that can be captured by the sensor on the to-be-detected part when rotating, and a clearance hole is opened at the center of the rotor, and is spaced apart from the to-be-detected part; A test probe is located in the clearance hole and is used to detect the magnetic flux of the part to be detected.
2. The functional test fixture for the coil actuator according to claim 1, characterized in that: It also includes a position sensor, which is located at the bottom of the working carrier plate and is used to identify the position of the part to be detected.
3. The functional test tool for coil actuator according to claim 1, characterized in that: It also includes a lower workbench and a driving motor connected to the lower workbench, the connecting shaft of the rotor is connected to the lower workbench and extends from the lower workbench, and the rotating shaft of the driving motor is connected to the connecting shaft through a transmission belt.
4. The functional test fixture for the coil actuator according to claim 1, characterized in that: The rotor has six protrusions distributed in a ring array, and two adjacent protrusions are arranged at intervals. The rotor generates six PWM waveforms when it rotates one circle.
5. The functional test tool for coil actuator according to claim 3, characterized in that: Four supporting columns are connected between the lower workbench and the work carrier plate.
6. The functional test tool for coil actuator according to claim 2, characterized in that: The test probe is a magnetic flux test probe, and the detection range of the magnetic flux test probe is 0-1000mT.