Window pinch guard and vehicle
By installing piezoelectric sensors and other sensors along the front edge of the car window glass, the movement of the window glass can be controlled, solving the problem of electric windows pinching passengers and improving safety and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN H&T CONTROL TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-12
AI Technical Summary
Electric windows close quickly, which can easily cause accidents where passengers are pinched or injured.
A piezoelectric sensor is installed on the front edge of the car window glass. By collecting pressure signals, the piezoelectric sensor controls the car window glass to stop or move in the opposite direction to avoid trapping foreign objects. The device may also include a touch sensor and a distance sensor to improve detection accuracy, and is equipped with an anti-pinch alarm.
This effectively reduces the chances of passengers being injured by the car window, lowers the risk of motor overheating and burning out, and improves safety and reliability.
Smart Images
Figure CN224351795U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle manufacturing technology, and in particular to a window anti-pinch device and a vehicle. Background Technology
[0002] With the continuous development of vehicle manufacturing technology, more and more vehicles are equipped with power windows. Compared with the traditional method of controlling the opening and closing of car windows by hand crank, power windows are more convenient to operate and can effectively reduce the workload of drivers and passengers. However, because power windows close quickly, they can easily cause accidents that pinch or injure passengers. Utility Model Content
[0003] This application provides a window anti-pinch device and a vehicle, which can reduce the occurrence of accidents in which passengers are injured by electric window pinching.
[0004] In a first aspect of this application, a vehicle window anti-pinch device is provided. The vehicle window includes a window frame and a window glass disposed within the window frame. When the vehicle window is opened, the front edge of the window glass and the window frame form a window opening. The device includes: a piezoelectric sensor disposed at the front edge of the window glass, the piezoelectric sensor being used to collect pressure signals; and a main controller connected to the piezoelectric sensor, the main controller being used to control the window glass to stop performing the action of closing the window based on the pressure signal collected by the piezoelectric sensor.
[0005] In embodiments of this application, the anti-pinch device for vehicle windows includes a main controller and a piezoelectric sensor communicatively connected to the main controller. The piezoelectric sensor is disposed at the leading edge of the window glass and is used to collect pressure signals. These pressure signals can be used to indicate whether a foreign object is located at the leading edge of the window glass. Based on the pressure signal collected by the piezoelectric sensor, the main controller can control the window glass to stop performing the closing action. For example, it can control the window glass to stop moving, or it can control the window glass to move in the opening direction, thereby reducing the occurrence of foreign objects being trapped by the window.
[0006] In some embodiments, the piezoelectric sensor is a piezoelectric thin film sensor.
[0007] In some embodiments, the piezoelectric thin film sensor is disposed on the outer surface of the front edge of the window glass, and the piezoelectric thin film sensor is disposed between the window glass and the window frame.
[0008] In some embodiments, the piezoelectric thin-film sensor is a polyvinylidene fluoride piezoelectric thin-film sensor or a lead zirconate titanate piezoelectric thin-film sensor.
[0009] In some embodiments, the device further includes an anti-pinch alarm, which is connected to the main controller, and the main controller is used to control the anti-pinch alarm to issue anti-pinch alarm information.
[0010] In some embodiments, the device further includes a touch sensor connected to the main controller, the touch sensor being disposed on the front edge of the window glass, and the touch sensor being used to collect touch signals.
[0011] In some embodiments, the touch sensor is a capacitive touch sensor.
[0012] In some embodiments, the device further includes: a distance sensor connected to the controller, the distance sensor being mounted on the top of the window frame, the distance sensor being used to detect the distance between the top of the window frame and the front edge of the window glass or an obstacle; wherein the obstacle is used to represent a foreign object between the top of the window frame and the front edge of the window glass.
[0013] In some embodiments, the ranging sensor is an ultrasonic ranging sensor.
[0014] In a second aspect of this application, a vehicle is also provided, which includes the anti-pinch device for the windows described in the first aspect.
[0015] It should be understood that the description in the Summary Section is not intended to limit the key or essential features of this application, nor is it intended to restrict the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0017] Figure 1 These are schematic diagrams of the vehicle from one perspective, provided in some embodiments of this application;
[0018] Figure 2 This is a schematic diagram of the hardware structure of the anti-pinch device for car windows provided in some embodiments of this application;
[0019] Figure 3 This is a schematic diagram of the hardware structure of the anti-pinch device for car windows provided in some other embodiments of this application;
[0020] Figure 4These are schematic diagrams of the hardware structure of a vehicle provided in some embodiments of this application. Detailed Implementation
[0021] The principles and spirit of this disclosure will be described below with reference to several exemplary embodiments illustrated in the accompanying drawings. It should be understood that these specific embodiments are described merely to enable those skilled in the art to better understand and implement this disclosure, and are not intended to limit the scope of this disclosure in any way. In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.
[0022] As used herein, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The terms "an embodiment" or "the embodiment" should be understood as "at least one embodiment".
[0023] For example, Figure 1 Structural schematic diagrams of a vehicle from one perspective, provided in some embodiments of this application, are shown. For example... Figure 1 As shown, the vehicle 100 includes a window 10, which includes a window frame 11 and a window glass 12 disposed within the window frame 11. When the window 10 is opened, the front edge 121 of the window glass 12 and the window frame 11 form a window opening 20.
[0024] Vehicle 100 can open and close window 10 by moving window glass 12. When window glass 12 moves along the opening direction of window 10 (e.g., ...), Figure 1 When the window 12 moves in the direction indicated by the middle arrow, it performs the action of opening the window 10, and the window opening 20 gradually increases; when the window 12 moves in the closing direction of the window, it performs the action of closing the window 10, and the window opening 20 gradually decreases; wherein, the opening direction of the window 10 is the opposite direction to the closing direction of the window 10.
[0025] For example, in some embodiments, when the vehicle 100 is parked on the ground, the opening direction of the window 10 can be perpendicular to the ground downwards, and the closing direction of the window 10 can be perpendicular to the ground upwards; at this time, the front edge of the window glass 12 can be the edge of the window glass 12 away from the ground. The top 111 of the window frame 11 is located at the end of the window frame 11 away from the ground.
[0026] During the closing action of the car window 12, if there is a foreign object in the window opening 20, the foreign object may easily get stuck between the window frame 11 and the front edge 121 of the window glass 12. The foreign object can be a human limb, such as a finger, or other objects.
[0027] To reduce the occurrence of foreign objects getting stuck in vehicle windows, in the first aspect of this application, a vehicle window anti-pinch device is provided, which can be installed in a vehicle (such as...). Figure 1 (Vehicle 100 in the example). Figure 2 A schematic diagram of the hardware structure of the anti-pinch window device is provided. Please refer to [link / reference]. Figure 2 The device 30 includes a main controller 31 and a piezoelectric sensor 32 connected to the main controller 31. The piezoelectric sensor 32 is disposed on the front edge of the vehicle window glass, for example, disposed on... Figure 1 The front edge 121 of the middle. The piezoelectric sensor 32 is used to collect pressure signals; the main controller 31 can acquire the pressure signals collected by the piezoelectric sensor 32, and control the window glass to stop performing the action of closing the window according to the pressure signals collected by the piezoelectric sensor 32.
[0028] The specific way in which the main controller 31 controls the window glass to stop performing the action of closing the window can be that the main controller 31 controls the window glass to stop moving, or it can be that the main controller 31 controls the window glass to move in the direction of opening the window.
[0029] In the embodiments of this application, a piezoelectric sensor 32 is disposed at the leading edge of the window glass and is used to collect pressure signals. When a foreign object touches the piezoelectric sensor 32, the pressure signal collected by the piezoelectric sensor 32 changes. This pressure signal can be used to indicate whether there is a foreign object located at the leading edge of the window glass. The main controller 31 can control the window glass to stop performing the closing action based on the pressure signal collected by the piezoelectric sensor 32, so that the window glass stops moving or the window is further opened, thereby reducing the occurrence of foreign objects being trapped in the window.
[0030] Specifically, in some embodiments, the device 30 further includes a drive motor 33 connected to a main controller 31. The main controller 31 controls the drive motor 33 to move the window glass, causing the window glass to perform an opening or closing action. The drive motor 33 may specifically include a relay and a motor; the relay is connected to both the main controller 31 and the motor. The main controller 31 controls the motor to rotate via the relay; the motor drives the window glass to move. For example, when the motor rotates in a first rotation direction, the motor drives the window glass to close; when the motor stops working, the window glass stops moving; when the motor rotates in the opposite direction to the first rotation direction, the motor drives the window glass to open.
[0031] In some embodiments, during the process of the motor driving the window glass to perform the window closing action, if a foreign object is trapped at the window opening, the piezoelectric sensor 32 will deform under the pressure of the foreign object, thereby generating charge and voltage at both ends of the piezoelectric sensor 32, forming detection data. The piezoelectric sensor 32 transmits the detection data (i.e., pressure signal) to the main controller 31. The main controller 31 can determine that a foreign object is trapped between the window glass and the window frame based on the detection data collected by the piezoelectric sensor 32, and issue a control command to the relay to control the motor to stop working or rotate in reverse, so that the window opening will no longer continue to decrease, thereby reducing the occurrence of foreign objects being trapped by the window. Therefore, the window anti-pinch device provided in this application embodiment not only helps to reduce the occurrence of people being injured by the window, but also helps to reduce the phenomenon of motor overheating and motor burnout caused by foreign objects being trapped.
[0032] In some embodiments, the piezoelectric sensor 32 is a piezoelectric thin film sensor. Piezoelectric thin film sensors have advantages such as high sensitivity and short response time to external stimuli, which helps to shorten the activation time of the anti-pinch function of the window anti-pinch device 30.
[0033] In some embodiments, a piezoelectric thin-film sensor is disposed on the outer surface of the front edge of the window glass, and the piezoelectric thin-film sensor is disposed between the window glass and the window frame. The piezoelectric thin-film sensor is thin and flexible, and can better cover the outer surface of the front edge of the window glass. Specifically, the outer surface of the front edge of the window glass may be located between the outer and inner sides of the window glass, wherein the inner and outer sides of the window glass are arranged opposite to each other, and the inner side is closer to the interior space than the outer side. In some embodiments of this application, the piezoelectric thin-film sensor may cover the entire outer surface of the front edge of the window glass.
[0034] In some embodiments, the piezoelectric film sensor is a polyvinylidene fluoride (PVDF) piezoelectric film sensor. The PVDF piezoelectric film sensor is lightweight and thin, allowing for flexible installation according to the shape of the outer surface of the front edge of the vehicle window. Furthermore, the PVDF piezoelectric film sensor can accurately detect minute pressure changes; even a light touch of a finger on the PVDF piezoelectric film sensor on the vehicle window will promptly detect the pressure signal applied by the finger.
[0035] In some embodiments, the piezoelectric thin film sensor may also be a lead zirconate titanate (PZT) piezoelectric thin film sensor. PZT piezoelectric thin film sensors are highly sensitive to pressure and can quickly and accurately detect pressure changes on the window glass; moreover, PZT piezoelectric thin film sensors have good high-temperature resistance, which allows the window anti-pinch device 30 to maintain stable anti-pinch performance under different ambient temperatures.
[0036] In some embodiments, to improve the detection accuracy of foreign objects, the device 30 further includes a touch sensor 34 connected to the main controller 31. The touch sensor 34 is disposed on the front edge of the window glass and is used to collect touch signals. The touch sensor 34 is capable of sensing human touch and converting it into an electrical signal. The controller can also control the window glass to stop closing the window based on the touch signals collected by the touch sensor 34, thereby reducing the occurrence of foreign objects being trapped in the window. In some embodiments of this application, the touch sensor 34 is specifically a capacitive touch sensor. Capacitive touch sensors have advantages such as high sensitivity and fast response speed.
[0037] In some embodiments, to further improve the detection accuracy of foreign objects, the device 30 further includes: a ranging sensor 35 connected to the main controller 31, the ranging sensor 35 being mounted on the top of the window frame (e.g., Figure 1 The top of the window frame 11 (111) is located in the vehicle window frame. A distance sensor 35 is used to detect the distance between the top of the window frame and the front edge of the window glass or an obstacle; wherein, the obstacle represents a foreign object between the top of the window frame and the front edge of the window glass. The controller can control the window glass to stop the window closing action based on the distance detected by the distance sensor 35, thereby reducing the occurrence of foreign objects being trapped in the window.
[0038] In some embodiments, the ranging sensor 35 is an ultrasonic ranging sensor. If there is a foreign object between the top of the window frame and the front edge of the window glass, the distance measured by the ultrasonic ranging sensor will be less than the distance from the front edge of the window glass to the top of the window frame. Therefore, the presence of a foreign object between the top of the window frame and the front edge of the window glass can be determined using the distance detected by the ultrasonic ranging sensor.
[0039] In some embodiments, the device 30 further includes an anti-pinch alarm 36 connected to the main controller 31. The main controller 31 controls the anti-pinch alarm 36 to emit an anti-pinch alarm message, which indicates that there is a risk of foreign objects being pinched between the window frame and the front edge of the window glass. The anti-pinch alarm 36 may specifically include an indicator light, a speaker, and / or a display screen. The anti-pinch alarm message may specifically be a flashing light emitted by the indicator light, an audio message played by the speaker, or a text message displayed on the display screen.
[0040] In a second aspect of this application, a vehicle is also provided. Exemplarily, Figure 4 A schematic diagram of the vehicle's hardware structure was presented. For example... Figure 4 As shown, the vehicle 40 includes a window anti-pinch device 41 provided in the first aspect, such as Figure 2 or Figure 3The anti-pinch device for car windows 30.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A vehicle window anti-pinch device, wherein the vehicle window includes a window frame and a window glass disposed within the window frame, and when the vehicle window is opened, the front edge of the window glass and the window frame form a window opening, characterized in that, The device includes: A piezoelectric sensor is disposed at the front edge of the vehicle window glass, and the piezoelectric sensor is used to collect pressure signals; A main controller is connected to the piezoelectric sensor and is used to control the window glass to stop performing the action of closing the window based on the pressure signal collected by the piezoelectric sensor.
2. The apparatus according to claim 1, characterized in that, The piezoelectric sensor is a piezoelectric thin film sensor.
3. The apparatus according to claim 2, characterized in that, The piezoelectric thin film sensor is disposed on the outer surface of the front edge of the window glass, and the piezoelectric thin film sensor is disposed between the window glass and the window frame.
4. The apparatus according to claim 2, characterized in that, The piezoelectric thin-film sensor is a polyvinylidene fluoride piezoelectric thin-film sensor or a lead zirconate titanate piezoelectric thin-film sensor.
5. The apparatus according to claim 1, characterized in that, The device further includes: An anti-pinch alarm is provided, which is connected to the main controller. The main controller is used to control the anti-pinch alarm to issue anti-pinch alarm information.
6. The apparatus according to any one of claims 1-5, characterized in that, The device further includes: A touch sensor is connected to the main controller and is located on the front edge of the window glass. The touch sensor is used to collect touch signals.
7. The apparatus according to claim 6, characterized in that, The touch sensor is a capacitive touch sensor.
8. The apparatus according to any one of claims 1-5, characterized in that, The device further includes: A distance measuring sensor is connected to the controller and is installed on the top of the window frame. The distance measuring sensor is used to detect the distance between the top of the window frame and the front edge of the window glass or an obstacle. The obstacle refers to a foreign object between the top of the window frame and the front edge of the window glass.
9. The apparatus according to claim 8, characterized in that, The ranging sensor is an ultrasonic ranging sensor.
10. A vehicle, characterized in that, The vehicle includes the anti-pinch window device as described in any one of claims 1-9.