Method and tool for testing motion position and anti-pinch function of vehicle-mounted mobile screen

Abstract

The application relates to a motion position and anti-pinch function test method and test tool for a vehicle-mounted mobile screen, the test tool comprising a tool base plate, an adjusting support fixedly connected to the tool base plate, a base assembly fixedly connected to the tool base plate, a position sensor assembly mounted on the adjusting support and a track tool plate, and an adjustable base assembly is used for fixing the vehicle-mounted mobile screen, wherein the sensor assembly comprises a start position sensor and an end position sensor which are respectively mounted on the adjusting support, the track tool plate has a first end corresponding to the position of the start position sensor, a second end corresponding to the position of the end position sensor, a track line between the first end and the second end, and an angle scale area and a percentage position scale area respectively located on both sides of the track line, and the degree line of the angle scale area intersects the degree line of the percentage position scale area at the track line; the motion position and anti-pinch function test method can realize the test of the global anti-pinch function of the vehicle-mounted mobile screen.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted mobile screen testing technology, and in particular to a method and testing fixture for testing the movement position and anti-pinch function of a vehicle-mounted mobile screen. Background Technology

[0002] With the development of the automotive industry and the increasing market demand for intelligent in-vehicle products, movable in-vehicle LCD screens are being used more and more widely in new energy vehicles. As one of the key components of a car, the in-vehicle LCD screen can move within the vehicle through a complex drive mechanism. While it brings a strong intelligent driving experience to the driver, it can also easily pose potential safety hazards to the occupants.

[0003] The accuracy of the movement position of the in-vehicle LCD screen is a key factor affecting whether the product's functions meet design standards and the driver's experience of intelligent driving. If the in-vehicle LCD screen deviates in position or tilts while the driver is operating it, it will not only affect the driver's ability to accurately obtain vehicle information, leading to operational errors or accidental touches of screen functions, thus reducing the user experience and the intelligent driving experience, but it will also distract the driver, impairing normal driving and potentially causing dangerous incidents.

[0004] Furthermore, when the in-vehicle LCD screen encounters an obstacle in its direction of movement, excessive anti-pinch force can damage the obstacle (especially people), or prevent the screen from moving normally, or even cause it to break, injuring passengers. The application of all-area anti-pinch technology during the movement of the in-vehicle LCD screen mitigates this safety hazard to some extent.

[0005] To provide drivers with a safe and comfortable intelligent driving experience, it is crucial to test the accuracy of the product's movement position and the effectiveness of its anti-pinch strategy before the in-vehicle LCD mobile screen leaves the factory. Currently, there are many devices and methods for testing the anti-pinch force of car windows. However, because the movement of automotive components such as windows and sunroofs is usually constrained by tracks, and because anti-pinch testing of these components, guided by automotive anti-pinch standards, typically only focuses on measuring the anti-pinch force and retraction distance, without requiring precision in the movement position, existing anti-pinch testing devices and methods are difficult to apply to the anti-pinch testing of in-vehicle mobile screens. Summary of the Invention

[0006] Since existing methods for testing the anti-pinch function of vehicle windows cannot be used to test the movement position and anti-pinch function of in-vehicle mobile screens, it is necessary to provide a testing method and testing fixture for the movement position and anti-pinch function of in-vehicle mobile screens.

[0007] According to one aspect of this application, a method for testing the motion position of an in-vehicle mobile screen is provided, comprising the following steps:

[0008] S1. Based on the "fully open" position A and "fully closed" position B of the vehicle-mounted mobile screen standard parts and the design dimensions of the vehicle-mounted mobile screen, calculate the absolute position starting point C on the first track rod, the absolute position ending point D on the first track rod, the absolute position starting point E on the third track rod, and the absolute position ending point F on the third track rod.

[0009] S2. Install the starting position sensor according to scales C and E, and install the ending position sensor according to scales D and F;

[0010] S3. Adjust the position of the trajectory fixture plate so that when the vehicle mobile screen is in the "completely closed" position, the scale point with an angle of 0° on the trajectory fixture plate coincides with the trajectory feature point of the vehicle mobile screen, and when the vehicle mobile screen is in the "completely open" position, the scale point with an angle of 114.5° on the trajectory fixture plate coincides with the trajectory feature point of the vehicle mobile screen.

[0011] S4. Replace the standard vehicle mobile screen with the vehicle mobile screen test piece. Adjust the position of the vehicle mobile screen test piece according to the start position sensor and the end position sensor so that the vehicle mobile screen test piece is in the preset test position.

[0012] S5. Pause when the motion of the vehicle-mounted mobile screen is completed by 5%, and record the percentage position scale value and angle scale value on the trajectory tooling plate;

[0013] S6. Determine whether the difference between the current completion rate and the percentage position scale value is within the range of percentage position deviation or whether the difference between the rotation angle of the vehicle-mounted mobile screen and the angle scale value is within the range of angle position deviation. If so, it indicates that the movement position of the vehicle-mounted mobile screen under test meets the requirements.

[0014] In one embodiment, the motion position testing method of the vehicle-mounted mobile screen further includes: determining whether the test data of the trajectory tooling plates on the left and right sides are the same; if so, it indicates that the motion positions of the left and right ends of the vehicle-mounted mobile screen are consistent.

[0015] Based on the above-mentioned method for testing the motion position of a vehicle-mounted mobile screen, this application also provides a method for testing the anti-pinch function of a vehicle-mounted mobile screen, including the following steps:

[0016] S8. Establish anti-pinch function test tasks for vehicle-mounted mobile screen test components at different completion levels based on the completion level sequence.

[0017] S9. Calculate the inertial deviation based on S5. The inertial deviation is the average of the difference between the angle scale value corresponding to the theoretical completion degree and the measured angle value.

[0018] S10. In each anti-pinch function test task, based on the installation position of the starting position sensor, the installation position of the ending position sensor, the current completion degree of the vehicle mobile screen under test, and the angle value corresponding to the current completion degree on the trajectory tooling, the point characteristics of the test point in the current anti-pinch function test task are calculated. The point characteristics of the test point include the position of the test point and the force direction of the pressure sensor at the test point.

[0019] S11. Correct the positional characteristics of the measuring point based on the inertial deviation in S9;

[0020] S12. Install the pressure sensor to the measuring point calibrated by S11 in the current anti-pinch function test task;

[0021] S13. Determine whether the anti-pinch function of the vehicle-mounted mobile screen under test is effective in the current anti-pinch function test task. If it is, the test is qualified; otherwise, the test is unqualified.

[0022] In the above-mentioned test method for the anti-pinch function of the vehicle-mounted mobile screen, S13 includes the following specific steps:

[0023] S1301. Record the time T taken from when the pressure sensor of the vehicle-mounted mobile screen is pressed until the anti-pinch strategy takes effect, and the maximum pressure F of the pressure sensor when the anti-pinch strategy takes effect.

[0024] S1302. Determine whether F is less than the maximum anti-pinch force Fmax. If yes, execute S1303. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified in the current anti-pinch function test task.

[0025] S1303. Determine whether T is less than the maximum effective time Tmax. If so, it indicates that the anti-pinch function of the vehicle mobile screen under test is qualified in the current anti-pinch function test task. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified.

[0026] In summary, this application designs a method for testing the motion position and anti-pinch function of an in-vehicle mobile screen. The test fixture is calibrated using a standard in-vehicle mobile screen component. Starting and ending position sensors are used to extract the specific structural features of the standard component into abstract structural features that match the test fixture, providing a positional basis for subsequent calibration and testing. Calibration of the trajectory fixture plate ensures the accuracy of the angle and percentage scale data read during the subsequent motion position testing phase, increasing the reliability of the test conclusions. Furthermore, in the anti-pinch function test, this application further calculates the inertial deviation of the in-vehicle mobile screen component based on the motion position testing method. This inertial deviation is used to correct the measurement points in the anti-pinch function test, improving the accuracy of the measurement point position characteristics and avoiding inaccurate or unrealistic test results caused by systematic errors in the measurement point layout, further increasing the reliability of the anti-pinch function test conclusions.

[0027] According to another aspect of this application, this application provides a testing fixture for testing the motion position and anti-pinch function of an in-vehicle mobile screen. The testing fixture specifically includes:

[0028] Tooling base plate;

[0029] An adjustable bracket is fixedly connected to the base plate of the tooling.

[0030] Base assembly for securing the vehicle-mounted mobile screen;

[0031] The position sensor assembly includes a start position sensor and an end position sensor respectively installed on the adjustment bracket;

[0032] A trajectory fixture plate is fixedly connected to the adjustment bracket. The trajectory fixture plate has a first end corresponding to the position of the starting point position sensor, a second end corresponding to the position of the ending point position sensor, a trajectory line located between the first end and the second end, and an angle scale area and a percentage position scale area located on both sides of the trajectory line. The 0-degree line of the angle scale area intersects the 0-degree line of the percentage position scale area at the trajectory line.

[0033] In one embodiment, the ratio of the accuracy of the percentage position scale area to the accuracy of the angle scale area is 1.145.

[0034] In one embodiment, to facilitate testing the consistency of the movement trajectories of the left and right sides of the vehicle-mounted mobile screen, the number of trajectory tooling plates is one pair and they are symmetrically arranged on both sides of the base assembly.

[0035] In one embodiment, to facilitate testers in judging the deviation of the movement position of the vehicle-mounted mobile screen, the test fixture further includes a laser component arranged corresponding to the scale area of ​​the trajectory fixture plate. The laser component is used to fix the upper edge of the screen body of the vehicle-mounted mobile screen and emit point lasers toward the angle scale area or percentage position scale area of ​​the trajectory fixture plate.

[0036] In one embodiment, to accommodate vehicle-mounted mobile screens of different sizes and facilitate precise adjustment, the adjustment bracket has two perpendicular X-axis, Y-axis, and Z-axis, including a first track rod fixedly connected to the tooling base plate and extending along the Y-axis, a second track rod adjustablely mounted on the first track rod and extending along the X-axis, and a third track rod adjustablely mounted on the second track rod and extending along the Z-axis; the starting position sensor and the ending position sensor are respectively adjustablely mounted on the second track rod.

[0037] In one embodiment, to ensure the accuracy of the anti-pinch function test results, the test fixture further includes a pressure sensor assembly adjustablely mounted on the third track rod. The pressure sensor assembly includes a fourth track rod, an adjusting rod, a blocking pin rotatably mounted on the adjusting rod, a pressure sensor fixed to the free end of the blocking pin, a first cross-shaped fixing clamp connected to the fourth track rod and the third track rod, and a second cross-shaped fixing clamp connected to the fourth track rod and the adjusting rod. Both the fourth track rod and the adjusting rod are scale rods, and both the first cross-shaped fixing clamp and the second cross-shaped fixing clamp have a pair of mutually perpendicular scale holes.

[0038] In summary, this application presents a test fixture adapted to test the motion position and anti-pinch function of an in-vehicle mobile screen. The trajectory fixture not only visualizes the screen's motion trajectory but also provides a reference for calibrating the measuring points during the anti-pinch function test through percentage and angle scale areas, enhancing the authenticity and reliability of the test results. Furthermore, the test fixture provided in this application is equipped with scale axes in the X, Y, and Z directions, facilitating quantitative adjustment and adapting to in-vehicle mobile screen products of different sizes. The laser component, in conjunction with the trajectory fixture, displays the screen's motion trajectory, which, compared to using a metal pointer and scale groove, facilitates readings and avoids trajectory deviation caused by insecure pointer adhesion. During the anti-pinch function test, the scale on the fourth track rod and adjusting rod, as well as the scale holes on the two cross clamps, facilitates quantitative adjustment of the pressure sensor's position, ensuring precise matching between the pressure sensor's force-bearing surface and the measuring point's positional characteristics, thus guaranteeing test accuracy. Attached Figure Description

[0039] Figure 1This is a schematic diagram of the structure of a vehicle-mounted mobile screen according to this application when it is opened from 0% completion to 5% completion.

[0040] Figure 2 for Figure 1 The diagram shows the structure of the in-vehicle mobile screen when it is closed from 100% completion to 95% completion.

[0041] Figure 3 This is a schematic diagram of the structure of the test fixture in one embodiment of this application;

[0042] Figure 4 for Figure 3 Side view of the test fixture shown;

[0043] Figure 5 for Figure 3 The front view of the test fixture shown;

[0044] Figure 6 for Figure 3 Schematic diagram of the structure of the acrylic tooling plate;

[0045] Figure 7 This is a schematic diagram of the inertial deviation of the vehicle-mounted mobile screen in this application;

[0046] Figure 8 A flowchart of a motion position testing method for an in-vehicle mobile screen provided in this application;

[0047] Figure 9 A flowchart illustrating a method for testing the anti-pinch function of a vehicle-mounted mobile screen provided in this application.

[0048] Figure label:

[0049] 1. Screen body; 2. Drive mechanism; 3. Track feature points; 10. Fixture base plate; 20. Adjustable bracket; 21. First track rod; 22. Second track rod; 23. Third track rod; 24. Adjustable locking mechanism; 30. Base assembly; 31. Adjustable base; 32. Positioning back plate; 33. Left positioning slot fixture; 34. Right positioning slot fixture; 35. Upper positioning slot fixture; 36. Lower positioning slot fixture; 40. Position sensor assembly; 41. Starting point position sensor; 42. 50. Endpoint position sensor; 50. Track fixture plate; 501. Percentage position scale area; 502. Angle scale area; 51. Acrylic scale plate; 52. Metal mounting plate; 60. Pressure sensor assembly; 61. Fourth track rod; 62. Adjusting rod; 63. Stopping pin; 64. First cross clamp; 65. Second cross clamp; 80. Indicator light assembly; 81. Power indicator light; 82. "Fully open" absolute position indicator light; 83. "Fully closed" absolute position indicator light. Detailed Implementation

[0050] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0056] Please see Figure 1 and Figure 2 The vehicle-mounted mobile screen includes a screen body 1 and a drive mechanism 2 connected to the screen body 1. The drive mechanism 2 has a "fully open" position A and a "fully closed" position B, wherein the "fully open" position A is located on the upper surface of the drive mechanism 2 near the screen body 1, and the "fully closed" position B is located on the lower surface of the drive mechanism 2 near the screen body 1.

[0057] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6The test fixture provided in this application includes a fixture base plate 10, an adjustable bracket 20 fixedly connected to the fixture base plate 10, a base assembly 30 fixedly connected to the fixture base plate 10, a position sensor assembly 40 mounted on the adjustable bracket 20, and a trajectory fixture plate 50. The adjustable base assembly 30 is used to fix the vehicle-mounted mobile screen. The position sensor assembly 40 includes a starting position sensor 41 and an ending position sensor 42 respectively mounted on the adjustable bracket 20. The trajectory fixture plate 50 has a first end corresponding to the position of the starting position sensor 41, a second end corresponding to the position of the ending position sensor 42, a trajectory line located between the first end and the second end, and an angle scale area 502 and a percentage position scale area 501 located on both sides of the trajectory line. The 0-degree line of the angle scale area 502 intersects the 0-degree line of the percentage position scale area 501 at the trajectory line. The motion trajectory of the vehicle-mounted mobile screen is visualized using the trajectory fixture board 50, which makes it easier for testers to confirm whether the motion trajectory of the vehicle-mounted mobile screen meets the standard. When a deviation in the motion trajectory of the vehicle-mounted mobile screen is detected, it is convenient to quickly identify the abnormal points of the trajectory.

[0058] like Figure 6 As shown, optionally, in one embodiment, the ratio of the accuracy of the percentage position scale area 501 to the accuracy of the angle scale area 502 is 1.145.

[0059] Furthermore, such as Figure 2 As shown, in order to facilitate testing the motion consistency of the left and right sides of the vehicle-mounted mobile screen, the number of the trajectory tooling plates 50 is one pair and they are symmetrically arranged on both sides of the base assembly 30.

[0060] Optionally, in one embodiment provided in this application, the test fixture further includes a laser component arranged corresponding to the scale area of ​​the trajectory fixture plate 50. This laser component is fixed to the upper edge of the screen body 1 of the vehicle-mounted mobile screen and emits laser light towards the scale area of ​​the trajectory fixture plate 50. It is understood that in this embodiment, the scale area of ​​the trajectory fixture plate is a light-transmitting component, thereby facilitating position confirmation by the test personnel. Specifically, as shown... Figure 2 As shown, in one embodiment of this application, the track tooling plate 50 includes an acrylic scale plate 51 and a metal mounting plate 52. The two scale areas are provided by the acrylic scale plate 51, and the metal mounting plate 52 is mounted on two third track rods 23.

[0061] like Figure 2 , Figure 3 and Figure 4As shown, in one embodiment of this application, the adjusting bracket 20 has two perpendicular X-axis, Y-axis, and Z-axis. Specifically, it includes a first track rod 21 fixedly connected to the fixture base plate 10 and extending along the Y-axis, a second track rod 22 adjustablely mounted on the first track rod 21 and extending along the X-axis, and a third track rod 23 adjustablely mounted on the second track rod 22 and extending along the Z-axis. The position sensor assembly 40 includes a start-point position sensor 41 and an end-point position sensor 42. Both the start-point and end-point position sensors 41 and 42 are mounted on the second track rod 22 and can be slidably adjusted along the X-axis. Based on the structure of this adjusting bracket 20, the test fixture provided in this application can adapt to position testing and anti-pinch testing of vehicle-mounted mobile screens of different sizes. Optionally, in one embodiment, the X-axis is located on the second track rod, the Y-axis is located on the fixture base plate 10 and arranged close to the first track rod 21, and the Z-axis is located on the third track rod 23. Optionally, in one embodiment provided in this application, the first track rod and the second track rod are connected by an adjustable locking mechanism 24.

[0062] like Figure 2 and Figure 4 As shown, optionally, in one embodiment provided in this application, the base assembly 30 includes an adjustable base 31 fixedly connected to the tooling base plate 10 and a positioning back plate 32 movably mounted on the adjustable base 31. The positioning back plate 32 is provided with a left positioning groove tooling 33, a right positioning groove tooling 34, an upper positioning groove tooling 35, and a lower positioning groove tooling 36. The four positioning groove toolings are respectively used for insertion and cooperation with the drive mechanism 2 of the vehicle-mounted mobile screen. In this way, by setting the positioning groove tooling, the connection between the vehicle-mounted mobile screen and the base assembly 30 is made tight, avoiding shaking, thereby ensuring the accuracy of the movement trajectory of the vehicle-mounted mobile screen during the test.

[0063] Optionally, to facilitate the arrangement of measuring points during the anti-pinch function test, the test fixture further includes a pressure sensor assembly 60 adjustablely mounted on the third track rod 23. The pressure sensor assembly 60 includes a fourth track rod 61, an adjusting rod 62, a blocking pin 63 rotatably mounted on the adjusting rod 62, a pressure sensor fixed to the free end of the blocking pin, a first cross-shaped fixing clamp 64 connected to the fourth track rod 61 and the third track rod 23, and a second cross-shaped fixing clamp 65 connected to the fourth track rod 61 and the adjusting rod. The fourth track rod 61 and the adjusting rod 62 are both scale rods, and the first cross-shaped fixing clamp 64 and the second cross-shaped fixing clamp 65 each have a pair of mutually perpendicular scale holes. Based on the above structure, the force-bearing surface of the pressure sensor can face any direction, which facilitates the arrangement of the pressure sensor according to the positional characteristics of the measuring point. Furthermore, since the fourth track rod 61 and the adjusting rod 62 are both scale rods, and the mounting holes on the two cross clamps are also scale holes, that is, angle scales are provided on the outer surface of the cross clamps around the mounting holes, and the fourth track rod 61 is provided with corresponding marking lines for angle scale reference adjustment along the rod axis direction, it is convenient for operators to make quantitative adjustments according to the scale when switching measuring points, and it is also convenient to calibrate the positional characteristics of the measuring point before testing, thereby improving the testing accuracy.

[0064] Optionally, in one embodiment provided in this application, in order to facilitate prompting the operator, the test fixture also includes an indicator light assembly 80, specifically including a power-on indicator light 81 electrically connected to the vehicle-mounted mobile screen, a "fully open" absolute position indicator light 82, and a "fully closed" absolute position indicator light 83.

[0065] According to another aspect of this application, this application also provides a method for testing the movement position and anti-pinch function of an in-vehicle mobile screen, such as... Figure 8 As shown, the specific steps include:

[0066] S1. Based on the "fully open" position A and "fully closed" position B of the standard vehicle-mounted mobile screen and the design dimensions of the vehicle-mounted mobile screen, calculate the absolute position starting point of the vehicle-mounted mobile screen at scale C on the first track rod 21, the absolute position ending point at scale D on the first track rod 21, the absolute position starting point at scale E on the third track rod 23, and the absolute position ending point at scale F on the third track rod 23. It can be understood that this step mainly provides a reference for the installation position of the vehicle-mounted mobile screen. The locations of scales C, D, E, and F are the installation reference points for the vehicle-mounted mobile screen. Figure 1 As shown, the "fully open" position A of the vehicle-mounted mobile screen is located on the upper side of the drive mechanism 2 behind the screen body 1, near the edge of the screen body 1, and the "fully closed" position B is located on the lower side of the drive mechanism 2, near the edge of the screen body 1.

[0067] S2. Install the starting position sensor according to scales C and E and the ending position sensor according to scales D and F. In this way, the preset installation position of the vehicle-mounted mobile screen in the test fixture can be obtained.

[0068] S3. Adjust the position of the trajectory fixture plate 50 so that when the vehicle-mounted mobile screen is in the "completely closed" position, the scale point with an angle of 0° on the trajectory fixture plate 50 coincides with the trajectory feature point 3 of the vehicle-mounted mobile screen, and when the vehicle-mounted mobile screen is in the "completely open" position, the scale point with an angle of 114.5° on the trajectory fixture plate 50 coincides with the trajectory feature point 3 of the vehicle-mounted mobile screen. Optionally, the trajectory feature point 3 can be a right-angle point on both sides of the upper edge of the mobile screen, or it can be a laser point of a laser emitter fixed on the mobile screen. When the trajectory feature point 3 is a laser point, the following steps are also included: fix the laser emitter on the upper edge of the screen body 1, turn on the laser emitter in advance during the test, and adjust the emission angle and installation position of the laser emitter to ensure that the starting point of the laser point's movement coincides with the starting point of the trajectory line. This step calibrates the installation position of the trajectory fixture plate 50 to ensure that the starting and ending points of the trajectory line on the trajectory fixture plate 50 correspond to the vehicle-mounted mobile screen.

[0069] S4. Replace the standard vehicle-mounted mobile screen with the vehicle-mounted mobile screen under test. Adjust the position of the vehicle-mounted mobile screen according to the starting position sensor 41 and the ending position sensor 42 to place the vehicle-mounted mobile screen in the preset test position. Specifically, the computer controls the vehicle-mounted LCD screen to move to the "fully open" position through the IIC communication module. When the vehicle-mounted LCD screen stops moving, the through-beam sensor installed on the ending position sensor 42 will determine whether the vehicle-mounted LCD screen has moved within the allowable position range of the "fully open" error set by the tooling. If so, the vehicle-mounted LCD screen "fully open" absolute position indicator 82 will be bright; otherwise, it will be off. The computer controls the vehicle-mounted LCD screen to move to the "fully closed" position through the IIC communication module. When the vehicle-mounted LCD screen stops moving, the through-beam sensor installed on the starting position sensor 41 will determine whether the vehicle-mounted LCD screen has moved within the allowable position range of the "fully closed" error set by the tooling. If so, the vehicle-mounted LCD screen "fully closed" absolute position indicator 83 will be bright; otherwise, it will be off.

[0070] S5. Pause the vehicle-mounted mobile screen every 5% of its motion completion, and record the percentage and angle values ​​on the trajectory fixture plate. This step is to evaluate whether the motion position of the vehicle-mounted mobile screen meets the factory requirements when paused at different locations. This method can determine whether the driving device of the vehicle-mounted mobile screen is malfunctioning or whether the driving algorithm meets the usage requirements.

[0071] S6. Determine whether the difference between the current completion rate and the percentage position scale value is within the range of percentage position deviation or whether the difference between the rotation angle of the vehicle mobile screen and the angle scale value is within the range of angle position deviation. If so, it indicates that the movement position of the vehicle mobile screen under test meets the requirements.

[0072] S7. Determine whether the test data of the trajectory tooling plates 50 on the left and right sides are the same. If so, it indicates that the positions of the left and right ends of the vehicle mobile screen are consistent.

[0073] According to another aspect of this application, this application also provides a method for testing the anti-pinch function of an in-vehicle mobile screen based on the above-mentioned method for testing the motion position of an in-vehicle mobile screen, such as... Figure 7 and Figure 9 As shown, the specific steps also include:

[0074] S8. Establish anti-pinch function test tasks for the vehicle-mounted mobile screen under test at different completion levels based on the completion level sequence. For example, the completion level sequence can be a forward sequence: 0%, 5%, 10%, 20%, 60%, used to match the anti-pinch function test of the vehicle-mounted mobile screen during the screen closing process, or a reverse sequence: 100%, 95%, 90%, 80%, 40%, used to match the anti-pinch function test of the vehicle-mounted mobile screen during the screen opening process. Each completion level requires the test points to be rearranged. It is understood that in other embodiments, the test points can be arranged uniformly in advance and the blocking pins can be installed. Before entering the next anti-pinch function test task, the blocking pins that are no longer needed can be removed one by one.

[0075] S9. Calculate the inertial deviation based on S5. This inertial deviation is the average difference between the angle scale value corresponding to the theoretical completion degree and the measured angle value. It is worth noting that this inertial deviation is the system error of the vehicle-mounted mobile screen. The vehicle-mounted mobile screen needs to automatically send diagnostic commands every 5ms to read its position information. When the position of the vehicle-mounted mobile screen reaches the preset completion degree, an automatic command is sent to stop the screen movement. Due to the inertia of screen movement, even if a target completion degree is preset, the actual position of the screen ( Figure 6 (Solid line structure) and theoretical position ( Figure 6 There is also a deviation between the dashed lines (the structure in the middle), that is, an inertial deviation, which causes the theoretical force direction of the pressure sensor to not remain perpendicular to the screen. Figure 7 As shown, α < β = 90°. If this inertial deviation is not considered, the actual hovering position of the screen at each completion position is forward, resulting in a larger anti-pinch force test value, making the anti-pinch function too sensitive, which is not conducive to the actual use of the vehicle-mounted mobile screen; in addition, since the screen movement trajectory of the vehicle-mounted mobile screen is arc-shaped, this inertial deviation causes the screen tilt angle to change, which will also cause the original pressure sensor force direction to tilt, resulting in abnormal measurement data;

[0076] S10. In each anti-pinch function test task, based on the installation position of the starting position sensor, the installation position of the ending position sensor, the current completion degree of the vehicle mobile screen under test, and the angle value corresponding to the current completion degree on the trajectory tooling, the point characteristics of the test point in the current anti-pinch function test task are calculated. The point characteristics of the test point include the position of the test point and the force direction of the pressure sensor at the test point.

[0077] S11. Based on the inertial deviation correction of the measuring point in S9, the positional characteristics of the measuring point are corrected. By calibrating the positional characteristics of the measuring point, the positional deviation of the measuring point is greatly reduced. It is worth noting that through calibration, it can be ensured that the force-bearing surface of the pressure sensor is parallel to the screen surface at the measuring point, that is, the pressure direction is perpendicular to the screen surface, thus ensuring the accuracy of the measuring point data.

[0078] S12. Install the pressure sensor to the measuring point calibrated by S11 in the current anti-pinch function test task;

[0079] S13. Determine whether the anti-pinch function of the vehicle-mounted mobile screen under test is effective in the current anti-pinch function test task. If it is, the test is qualified; otherwise, the test is unqualified.

[0080] Optionally, in one embodiment provided in this application, S13 includes the following specific steps:

[0081] S1301. Record the time T taken from when the pressure sensor is pressed to when the anti-pinch strategy takes effect on the vehicle mobile screen and the maximum pressure F of the pressure sensor when the anti-pinch strategy takes effect. Optionally, in order to improve the accuracy of the data, the vehicle mobile screen under test needs to be measured 10 times at each completion position. The error is reduced by taking the average value of the measurements. That is, the above time T and maximum pressure F are the average values ​​of multiple measurements.

[0082] S1302. Determine whether F is less than the maximum anti-pinch force Fmax. If yes, execute S1303. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified in the current anti-pinch function test task.

[0083] S1303. Determine whether T is less than the maximum effective time Tmax. If so, it indicates that the anti-pinch function of the vehicle mobile screen under test is qualified in the current anti-pinch function test task. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified.

[0084] The anti-pinch function test method provided in this application not only detects and judges the maximum anti-pinch force, but also detects and judges the effective time of the anti-pinch strategy, thus improving the anti-pinch function test standard and ensuring the reliability of the anti-pinch function test conclusions.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A testing fixture for testing the motion position and anti-pinch function of a vehicle-mounted mobile screen, characterized in that, include: Tooling base plate (10); An adjusting bracket (20) is fixedly connected to the tooling base plate (10). The adjusting bracket (20) has two perpendicular X-axis, Y-axis and Z-axis, including a first track rod (21) fixedly connected to the tooling base plate (10) and extending along the Y-axis, a second track rod (22) adjustablely mounted on the first track rod (21) and extending along the X-axis, and a third track rod (23) adjustablely mounted on the second track rod (22) and extending along the Z-axis. Base assembly (30) for fixing the vehicle-mounted mobile screen; The position sensor assembly (40) includes a starting position sensor (41) and an ending position sensor (42) respectively mounted on the adjustment bracket (20). The starting position sensor (41) and the ending position sensor (42) are respectively adjustablely mounted on the second track rod (22). The trajectory fixture plate (50) is fixedly connected to the adjustment bracket (20). The trajectory fixture plate (50) has a first end corresponding to the position of the starting position sensor (41), a second end corresponding to the position of the ending position sensor (42), a trajectory line located between the first end and the second end, and an angle scale area (502) and a percentage position scale area (501) located on both sides of the trajectory line. The 0-degree line of the angle scale area (502) intersects the 0-degree line of the percentage position scale area (501) at the trajectory line.

2. The test fixture according to claim 1, characterized in that, The ratio of the accuracy of the percentage position scale area (501) to the accuracy of the angle scale area (502) is 1.

145.

3. The testing fixture according to claim 1, characterized in that, The number of the trajectory tooling plates (50) is one pair and they are symmetrically arranged on both sides of the base assembly (30).

4. The testing fixture according to claim 1, characterized in that, The test fixture also includes a laser component arranged corresponding to the scale area of ​​the trajectory fixture plate (50). The laser component is used to fix the upper edge of the screen body (1) of the vehicle mobile screen and emit point lasers toward the angle scale area (502) or percentage position scale area (501) of the trajectory fixture plate (50).

5. The testing fixture according to claim 1, characterized in that, The test fixture also includes a pressure sensor assembly (60) adjustablely mounted on the third track rod (23). The pressure sensor assembly (60) includes a fourth track rod (61), an adjusting rod (62), a stop pin (63) rotatably mounted on the adjusting rod (62), a pressure sensor fixed to the free end of the stop pin (63), a first cross-shaped fixing clamp (64) connected to the fourth track rod (61) and the third track rod (23), and a second cross-shaped fixing clamp (65) connected to the fourth track rod (61) and the adjusting rod. The fourth track rod (61) and the adjusting rod (62) are both scale rods, and the first cross fixing clamp (64) and the second cross fixing clamp (65) are both provided with a pair of scale holes that are perpendicular to each other.

6. A method for testing the motion position of a vehicle-mounted mobile screen, characterized in that, The test fixture described in any one of claims 1 to 5 includes the following steps: S1. Based on the "fully open" position A and "fully closed" position B of the vehicle-mounted mobile screen standard parts and the design dimensions of the vehicle-mounted mobile screen, calculate the absolute position starting point C on the scale of the second track rod, the absolute position ending point D on the scale of the second track rod, the absolute position starting point E on the scale of the third track rod, and the absolute position ending point F on the scale of the third track rod. S2. Install the starting position sensor according to scales C and E, and install the ending position sensor according to scales D and F; S3. Adjust the position of the trajectory fixture plate so that when the vehicle mobile screen is in the "completely closed" position, the scale point with an angle of 0° on the trajectory fixture plate coincides with the trajectory feature point of the vehicle mobile screen, and when the vehicle mobile screen is in the "completely open" position, the scale point with an angle of 114.5° on the trajectory fixture plate coincides with the trajectory feature point of the vehicle mobile screen. S4. Replace the standard vehicle mobile screen with the vehicle mobile screen test piece. Adjust the position of the vehicle mobile screen test piece according to the start position sensor and the end position sensor so that the vehicle mobile screen test piece is in the preset test position. S5. Pause when the motion of the vehicle-mounted mobile screen is completed by 5%, and record the percentage position scale value and angle scale value on the trajectory tooling plate; S6. Determine whether the difference between the current completion rate and the percentage position scale value is within the range of percentage position deviation or whether the difference between the rotation angle of the vehicle-mounted mobile screen and the angle scale value is within the range of angle position deviation. If so, it indicates that the movement position of the vehicle-mounted mobile screen under test meets the requirements.

7. The method for testing the motion position of a vehicle-mounted mobile screen according to claim 6, characterized in that, It also includes the following steps: S7. Determine whether the test data of the trajectory tooling plates on the left and right sides are the same. If so, it indicates that the left and right ends of the vehicle mobile screen move in the same position.

8. A method for testing the anti-pinch function of a vehicle-mounted mobile screen, characterized in that, Includes the motion position testing method for an in-vehicle mobile screen as described in claim 6 or 7, and the following steps: S8. Establish anti-pinch function test tasks for vehicle-mounted mobile screen test components at different completion levels based on the completion level sequence. S9. Calculate the inertial deviation based on S5. The inertial deviation is the average of the difference between the angle scale value corresponding to the theoretical completion degree and the measured angle value. S10. In each anti-pinch function test task, based on the installation position of the starting position sensor, the installation position of the ending position sensor, the current completion degree of the vehicle mobile screen under test, and the angle value corresponding to the current completion degree on the trajectory tooling, the point characteristics of the test point in the current anti-pinch function test task are calculated. The point characteristics of the test point include the position of the test point and the force direction of the pressure sensor at the test point. S11. Correct the positional characteristics of the measuring point based on the inertial deviation in S9; S12. Install the pressure sensor to the measuring point calibrated by S11 in the current anti-pinch function test task; S13. Determine whether the anti-pinch function of the vehicle-mounted mobile screen under test is effective in the current anti-pinch function test task. If it is, the test is qualified; otherwise, the test is unqualified.

9. A method for testing the anti-pinch function of a vehicle-mounted mobile screen according to claim 8, characterized in that, S13 includes the following specific steps: S1301. Record the time T taken from when the pressure sensor of the vehicle-mounted mobile screen is pressed until the anti-pinch strategy takes effect, and the maximum pressure F of the pressure sensor when the anti-pinch strategy takes effect. S1302. Determine whether F is less than the maximum anti-pinch force Fmax. If yes, execute S1303. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified in the current anti-pinch function test task. S1303. Determine whether T is less than the maximum effective time Tmax. If so, it indicates that the anti-pinch function of the vehicle mobile screen under test is qualified in the current anti-pinch function test task. Otherwise, it indicates that the anti-pinch function of the vehicle mobile screen under test is unqualified.

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