A pressure-resistant detection device for a vehicle-mounted display screen

Abstract

The utility model relates to display screen detection technical field, and disclose a kind of compression resistance detection device for vehicle-mounted display screen, including detection machine, top driving element provides stable pressure power, workbench clamping piece fixes display screen, the pressure sensor of driving element output end has the function of pressure transmission and data capture, can real-time obtain the pressure value of touch rod and display screen contact, guarantee detection data accurate, lay foundation for compression resistance performance evaluation.Control component realizes touch rod two-way adjustment, one side of motion seat is connected reset spring, the other side pull line winding servo motor's take-up roll, servo motor take-up pull line cooperates reset spring, drive motion seat reciprocating movement along this direction;Two motion seat interval screw rod is driven by driving machine, motion platform sliding sleeve is connected in fixed sliding rod, sliding rod limit makes motion platform along rod translation, drive touch rod synchronous movement, two-way adjustment makes touch rod can flexibly cover display screen whole area, eliminate edge, corner and other key parts detection blind area.

Description

Technical Field

[0001] This utility model relates to the field of display screen testing technology, and in particular to a pressure resistance testing device for vehicle-mounted display screens. Background Technology

[0002] With the rapid development of automotive intelligence and connectivity, in-vehicle displays have gradually evolved from traditional single-function information display to core interactive terminals integrating navigation, entertainment, vehicle control, human-machine interaction, and other multi-dimensional functions. Currently, in-vehicle displays are used in various locations, including dashboards, central control screens, passenger entertainment screens, and rear-seat entertainment screens.

[0003] However, the mechanical stresses faced by in-vehicle displays throughout the vehicle's lifecycle exhibit significant multidirectionality and complexity. During vehicle operation, the inertial force generated by sudden braking and the multidirectional vibrations and impacts caused by bumpy roads can subject the display to instantaneous loads from different directions, potentially causing the connection between the screen and the mounting bracket to loosen, leading to malfunctions such as touch delays and screen distortion. In daily use, scenarios such as accidental drops of objects impacting the screen and users pressing on the edges of the screen during operation also generate non-perpendicular forces, further testing the display's multidirectional compressive strength.

[0004] Currently, testing of automotive displays mainly focuses on performance indicators such as display clarity, touch sensitivity, and high and low temperature adaptability, while specialized testing methods for multi-directional pressure resistance are relatively scarce. Existing testing devices mostly use fixed-directional pressure application structures, which can only apply pressure to a single point or local area in the vertical direction on the display surface. They cannot simulate the multi-directional and multi-angle force scenarios that the display may be subjected to in actual use. In particular, they are difficult to cover critical areas such as screen edges and corners that are easily damaged and have complex force directions, resulting in significant blind spots in the testing range and making it impossible to comprehensively assess the actual pressure resistance performance of the display. Utility Model Content

[0005] The technical problem to be solved by this invention is that the existing technology has the disadvantage of not being comprehensive enough in terms of detection. To address this, we propose a pressure testing device for vehicle-mounted displays.

[0006] To achieve the above objectives, this application adopts the following technical solution: a pressure testing device for an in-vehicle display screen, comprising a testing machine, a driving component mounted on the top of the testing machine, a pressure sensor fixedly connected to the output end of the driving component, a contact rod provided at the bottom of the pressure sensor, a control component provided between the contact rod and the pressure sensor, the control component comprising an assembly table, the top of the assembly table fixedly connected to the input end of the pressure sensor, guide frames fixedly connected to both sides of the bottom of the assembly table, a motion seat built into the guide frame, a return spring provided on one side of the motion seat, a pull wire fixedly connected to the other side of the motion seat, a threaded roller provided between the two motion seats, a motion platform threadedly sleeved on the surface of the threaded roller, and the bottom of the motion platform fixedly connected to the contact rod.

[0007] Preferably, the worktable of the testing machine is fixedly connected with a clamping component.

[0008] Preferably, one end of the reset spring is fixedly connected to the motion seat, and the other end of the reset spring is sleeved and fixedly fitted with a positioning cylinder, one end of which is fixedly connected to the inner wall of the guide frame.

[0009] Preferably, a drive motor is mounted on one end of the threaded roller.

[0010] Preferably, a servo motor is provided at the end of the pull wire away from the motion seat, and a take-up roller is fixedly connected to the output end of the servo motor.

[0011] Preferably, one end of the pull wire is wound and fixed to the surface of the take-up roller.

[0012] Preferably, a fixing seat is sleeved and fixed on the surface of the servo motor, and one side of the fixing seat is fixedly connected to the inner wall of the guide frame.

[0013] Preferably, a sliding rod is slidably sleeved on one side of the motion platform, and the two ends of the sliding rod are fixedly connected to the motion seats on both sides.

[0014] The technical effects and advantages of this utility model are as follows: This utility model's vehicle-mounted display screen pressure testing device is based on a testing machine. A top drive unit provides stable pressure, a worktable clamping unit fixes the display screen, and a pressure sensor at the drive unit's output end combines pressure transmission and data capture functions, enabling real-time acquisition of the pressure value between the touch rod and the display screen, ensuring accurate test data and laying the foundation for pressure resistance performance evaluation. The control components achieve bidirectional adjustment of the touch rod: First, a pressure sensor is connected to the assembly table, and a bottom guide frame defines the trajectory of the motion seat. A return spring is connected to one side of the motion seat (a positioning cylinder fixes the spring and prevents deviation), and a pull wire is wound around a take-up roller of a servo motor (fixed by a fixed base) on the other side. The servo motor, in conjunction with the return spring, reciprocates the motion seat in that direction. Second, a threaded roller between the two motion seats is driven by a drive machine, and the surface motion table is slidably fitted onto a fixed sliding rod. The sliding rod limits the movement of the motion table, causing it to only translate along the rod, thus moving the touch rod synchronously. The bidirectional adjustment allows the touch bar to flexibly cover the entire display screen area, completely eliminating detection blind spots in key areas such as edges and corners. It makes up for the shortcomings of existing devices that can only apply pressure vertically, effectively simulating the multi-directional forces that the display screen may experience in actual use, and solving the detection blind spot problem of existing devices. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a schematic diagram of the assembly table structure of this utility model; Figure 4 This is an exploded view of the assembly table of this utility model; Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0016] Legend: 1. Testing machine; 101. Driving component; 2. Clamping component; 3. Pressure sensor; 4. Control component; 401. Assembly table; 402. Guide frame; 403. Motion seat; 404. Return spring; 405. Positioning cylinder; 406. Pull wire; 407. Servo motor; 408. Fixed seat; 409. Take-up roller; 410. Threaded roller; 411. Motion table; 412. Driving machine; 413. Sliding rod; 5. Contact rod. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0018] Reference Figures 1 to 5 As shown, this utility model provides a technical solution: a pressure testing device for vehicle-mounted displays, including a testing machine 1. A driving component 101 is installed on the top of the testing machine 1. A clamping component 2 is fixedly connected to the worktable of the testing machine 1. A pressure sensor 3 is fixedly connected to the output end of the driving component 101. A contact rod 5 is provided at the bottom of the pressure sensor 3. A control component 4 is provided between the contact rod 5 and the pressure sensor 3. The driving component 101 on the top of the testing machine 1 serves as a pressure power source. The pressure sensor 3 fixed at its output end not only moves vertically with the driving component 101 to transmit the pressure required for testing to the contact rod 5, but also captures the pressure value when the contact rod 5 contacts the display screen in real time, ensuring the accuracy of the test data.

[0019] The control component 4 includes an assembly platform 401. The top of the assembly platform 401 is fixedly connected to the input end of the pressure sensor 3. Guide frames 402 are fixedly connected to both sides of the bottom of the assembly platform 401. A motion seat 403 is built into the guide frame 402. A return spring 404 is provided on one side of the motion seat 403. One end of the return spring 404 is fixedly connected to the motion seat 403. A positioning cylinder 405 is sleeved and fixed to the other end of the return spring 404. One end of the positioning cylinder 405 is fixedly connected to the inner wall of the guide frame 402. A pull wire 406 is fixedly connected to the other side of 403. A servo motor 407 is installed at the end of the pull wire 406 away from the motion seat 403. A take-up roller 409 is fixedly connected to the output end of the servo motor 407. One end of the pull wire 406 is wound and fixed to the surface of the take-up roller 409. A fixed seat 408 is sleeved and fixed to the surface of the servo motor 407. One side of the fixed seat 408 is fixedly connected to the inner wall of the guide frame 402. The guide frames 402 on both sides of the bottom limit the movement trajectory of the motion seat 403 to ensure stable movement direction. A return spring 404 is connected to one side of the motion seat 403 inside the guide frame 402. The other end of the return spring 404 is fixed to the inner wall of the guide frame 402 through a positioning cylinder 405. The positioning cylinder 405 can fix the position of the spring and prevent the spring from shifting or bending during extension and contraction, ensuring the normal operation of the spring. On the other side of the motion seat 403, the pull wire 406 is wound around the take-up roller 409 at the output end of the servo motor 407. The servo motor 407 is fixed to the inner wall of the guide frame 402 by the fixed seat 408 to ensure its stable position during operation. When it is necessary to adjust the position in one direction, the servo motor 407 starts and drives the take-up roller 409 to rotate. When the pull wire 406 is wound up, the pull wire 406 pulls the motion seat 403 along the guide frame 402 toward the servo motor 407, and the return spring 404 is compressed and contracted. When the pull wire 406 is released, the return force of the return spring 404 pushes the motion seat 403 to move in the opposite direction, realizing the reciprocating adjustment of the motion seat 403 in that direction, thereby driving the contact rod 5 to move in that direction, breaking the limitation of fixed-direction pressure and creating conditions for covering more detection areas.

[0020] Furthermore, a threaded roller 410 is provided between the two motion seats 403. A motion table 411 is threadedly fitted onto the surface of the threaded roller 410. A drive motor 412 is installed at one end of the threaded roller 410. A sliding rod 413 is slidably fitted onto one side of the motion table 411. The two ends of the sliding rod 413 are fixedly connected to the two motion seats 403. The bottom of the motion table 411 is fixedly connected to the contact rod 5. To achieve movement in another direction, the motion table 411, threaded onto the surface of the threaded roller 410, is simultaneously slidably fitted onto the sliding rod 413, which is fixed at both ends to the motion seats 403. The limiting effect of the sliding rod 413 prevents the motion table 411 from rotating with the threaded roller 410, and it can only translate along the sliding rod 413 under the threaded transmission. The translation of the motion table 411 directly drives the contact rod 5 to move synchronously. Combined with the adjustment in the previous direction, the touch bar 5 can move flexibly on the surface of the display screen, no longer limited to a single point or local area. It can easily cover key parts that are easily damaged and subject to complex forces, such as the edges and corners of the screen, effectively solving the detection blind spot problem of existing devices and accurately simulating the multi-directional and multi-angle force scenarios that the display screen may be subjected to in actual use.

[0021] The device drive unit 101 stably outputs pressure, and the pressure sensor 3 provides real-time feedback of pressure values, ensuring the authenticity and validity of the detection data and providing an accurate basis for pressure resistance performance evaluation. The control component 4, through the cooperation of the servo motor 407, the pull cable 406, and the return spring 404, achieves smooth reciprocating movement in one direction; through the cooperation of the drive motor 412, the threaded roller 410, and the sliding rod 413, it achieves precise translation in the other direction. The bidirectional adjustment allows the touch rod 5 to cover the entire display screen area, completely eliminating detection blind spots in key areas such as edges and corners, and making up for the deficiency of existing devices that can only apply pressure vertically.

[0022] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A pressure resistance testing device for vehicle-mounted displays, characterized in that, The system includes a testing machine. A driving component is mounted on the top of the testing machine. A pressure sensor is fixedly connected to the output end of the driving component. A contact rod is provided at the bottom of the pressure sensor. A control component is provided between the contact rod and the pressure sensor. The control component includes an assembly table. The top of the assembly table is fixedly connected to the input end of the pressure sensor. Guide frames are fixedly connected to both sides of the bottom of the assembly table. Motion seats are built into the guide frames. A return spring is provided on one side of the motion seat. A pull wire is fixedly connected to the other side of the motion seat. A threaded roller is provided between the two motion seats. A motion platform is threaded onto the surface of the threaded roller. The bottom of the motion platform is fixedly connected to the contact rod.

2. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: The worktable of the testing machine is fixedly connected to a clamping device.

3. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: One end of the reset spring is fixedly connected to the motion seat, and the other end of the reset spring is fitted with a positioning cylinder, one end of which is fixedly connected to the inner wall of the guide frame.

4. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: A drive motor is installed at one end of the threaded roller.

5. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: A servo motor is installed at the end of the pull wire away from the motion seat, and a take-up roller is fixedly connected to the output end of the servo motor.

6. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: One end of the pull wire is wound and fixed to the surface of the take-up roller.

7. The pressure testing device for vehicle-mounted displays according to claim 5, characterized in that: A mounting base is fixedly fitted onto the surface of the servo motor, and one side of the mounting base is fixedly connected to the inner wall of the guide frame.

8. The pressure testing device for vehicle-mounted displays according to claim 1, characterized in that: A sliding rod is slidably connected to one side of the motion platform, and the two ends of the sliding rod are fixedly connected to the motion seats on both sides.

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