Mechanical structure of rain curtain height self-adaptive adjusting system
The rain curtain height adaptive adjustment system uses sensors and intelligent control units to automatically adjust the height of the rain curtain, solving the problem of unsuitable ground clearance of traditional rain curtains under different working conditions, and improving safety and energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-31
AI Technical Summary
The fixed height design of traditional rain curtains cannot adapt to complex and ever-changing working conditions, resulting in an unsuitable ground clearance under both unloaded and fully loaded conditions. This may lead to damage or increased wind resistance, and the anti-splash effect is poor on bumpy roads, failing to meet safety and energy consumption requirements.
The system employs an adaptive rain curtain height adjustment system, which uses road surface sensing sensors, vehicle-mounted dynamic parameter acquisition modules, and intelligent control units, combined with multi-source data fusion algorithms, to achieve fully automatic optimized adjustment of the rain curtain height. This includes an electric push rod or hydraulic actuator driving the guide rail mechanism, and is equipped with pressure sensors and emergency lifting logic.
It achieves precise and stable adjustment of the rain curtain height, improves anti-splash performance, driving safety and energy economy, adapts to a variety of vehicle models, reduces the risk of mechanical damage and wind resistance, and meets regulatory requirements.
Smart Images
Figure CN224061055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rain curtain adjustment technology, specifically to the mechanical structure of a rain curtain height adaptive adjustment system. Background Technology
[0002] For the safety of road users, the government has established relevant standards and regulations for splash protection systems. These standards aim to effectively reduce the potential hazards caused by splashes from vehicles to other road users and the surrounding environment by standardizing the performance of splash protection systems. Rain curtains, in particular, can effectively block the spray of water mist from splashing rain, preventing obstruction of vision for the driver and other road users, thus ensuring their safety. However, most traditional splash protection systems use a fixed-height design for their rain curtains, which exhibits significant limitations when facing complex and varied operating conditions.
[0003] For example, when a vehicle is unloaded and fully loaded, the difference in suspension height is significant. A fixed-height rain curtain cannot automatically adjust its ground clearance, potentially causing it to exceed standard regulations when unloaded, or be too low when fully loaded. This could lead to the rain curtain scraping against the ground, damaging the rain curtain assembly or even the entire splash-proof system. Furthermore, when driving on bumpy roads, the vehicle's vertical movement significantly reduces the splash-proof effect of a fixed-height rain curtain, failing to meet practical safety requirements. Additionally, when the vehicle is traveling at high speed on smooth roads in good weather, a fixed-height rain curtain increases wind resistance, thus increasing overall vehicle energy consumption.
[0004] Most existing rain curtains indirectly adjust their height by using a fixed height or by manually adjusting the mudguards.
[0005] Fixed-height rain curtains cannot be adjusted in height from the ground. Under different working conditions, they always remain at the same height as the component they are installed on. The height of the rain curtain from the ground varies depending on different road conditions.
[0006] Manually adjustable mudguards, such as those in patent number "Mudguard Assembly and Vehicle," allow for indirect adjustment of the ground clearance of the rain curtain mounted below them by manually adjusting the position of the mudguards. This device requires the driver to judge the road conditions based on experience before driving and manually adjust the mudguards to change the ground clearance of the mudguards and rain curtain. This method is not only inconvenient to operate, but also prone to problems due to the uncertainty of road conditions at different times and the possibility that the driver's lack of experience may lead to an unreasonable adjustment of the mudguard and rain curtain positions, exacerbating the aforementioned technical problems and making driving more dangerous. Summary of the Invention
[0007] The purpose of this invention is to provide a mechanical structure for a rain curtain height adaptive adjustment system, in order to solve the technical problems existing in the background art.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A mechanical structure for a rain curtain height adaptive adjustment system includes:
[0010] The mounting base is rigidly connected to the vehicle body.
[0011] An actuator, which is connected to the mounting base;
[0012] A guide rail mechanism is mounted on the mounting base;
[0013] The rain curtain is connected to the guide rail mechanism, and the guide rail mechanism is driven by an actuator to rise or fall.
[0014] In some embodiments, the mounting base is fixed to the vehicle chassis or mudguard bracket.
[0015] In some embodiments, the actuator is an electric actuator or a hydraulic actuator.
[0016] In some embodiments, the guide rail mechanism includes a guide rail and a track slidably disposed within the guide rail, the lower end of the track being connected to the rain curtain and the upper end of the track being connected to an actuator.
[0017] In some embodiments, the rain curtain is a flexible rain curtain.
[0018] In some embodiments, the bottom of the rain curtain is provided with a serrated guide structure and a pressure sensor is embedded therein.
[0019] The beneficial effects that the mechanical structure of the rain curtain height adaptive adjustment system disclosed in this application may bring include, but are not limited to:
[0020] The mechanical mechanism provided in this application ensures the precision and stability of the adjustment, achieving fully automatic optimized adjustment of the rain curtain height, significantly improving anti-splash performance, driving safety, and energy economy. Its modular design facilitates adaptation to various vehicle models and has broad prospects for industrial application. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the system architecture layer of this application;
[0022] Figure 2 This is a schematic diagram of the system in this application;
[0023] Figure 3 This is a schematic diagram of the implementing mechanism of the system in this application;
[0024] Figure 4 This is a flowchart of the method in this application. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0026] Conversely, this application covers any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this application as defined in the claims. Furthermore, to provide the public with a better understanding of this application, certain specific details are described in detail below. However, those skilled in the art can fully understand this application even without these detailed descriptions. To further illustrate the mechanical structure of the rain curtain height adaptive adjustment system, its application to a rain curtain height adaptive adjustment system is described in detail below.
[0027] like Figure 1-4 As shown, a rain curtain height adaptive adjustment system includes:
[0028] The road surface perception sensor 10 is installed at the front of the vehicle chassis. The road surface perception sensor 10 includes a road condition sensor 3 and a weather sensor 1, which are used to detect the elevation and undulation information of the road surface ahead in real time (such as rain, potholes, speed bumps, etc.). The road condition sensor 3 can be a lidar.
[0029] The vehicle dynamic parameter acquisition module 20 includes a suspension height sensor, a vehicle speed sensor and an acceleration sensor, which are used to acquire vehicle load, vehicle speed and acceleration data.
[0030] The intelligent control unit 30 is connected to the road surface perception sensor 10 and the vehicle dynamic parameter acquisition module 20, and is configured to generate rain curtain target height instructions based on a multi-source data fusion algorithm.
[0031] The actuator 40, including an electric push rod or a hydraulic actuator, is connected to the rain curtain via a guide rail mechanism and is used to drive the rain curtain to rise and fall vertically according to the target height command. The guide rail mechanism includes a guide rail 8 and a track slidably disposed within the guide rail. The lower end of the track is connected to the rain curtain, and the upper end of the track is connected to the actuator.
[0032] In some embodiments, the bottom of the rain curtain is provided with a serrated guide structure and an embedded pressure sensor. The pressure sensor is communicatively connected to the intelligent control unit 30 and is used to monitor the ground pressure in real time and trigger an emergency lifting command.
[0033] Flexible rain curtain: Fixed below the telescopic rod, it can move up and down according to the signal received from the intelligent control unit by the actuator.
[0034] The entire actuator employs an electric push rod or hydraulic actuator 7 to drive the rain curtain, ensuring the accuracy and stability of the adjustment: including:
[0035] Mounting base 6: Fixed to the vehicle chassis or mudguard bracket, rigidly connected to the vehicle body.
[0036] Electric push rod or hydraulic actuator: After receiving the signals from each sensing sensor, the intelligent control unit calculates whether the rain curtain should rise or fall, and converts it into a signal for the electric push rod or hydraulic actuator to rise or fall. After receiving the signal, the electric push rod or hydraulic actuator performs the corresponding action and drives the telescopic rod that fixes the rain curtain to move up and down along the direction of guide rail 8 to change the height of the rain curtain.
[0037] In some embodiments, the intelligent control unit 30 is configured to perform the following steps:
[0038] Collect data on road surface elevation, vehicle speed, suspension height, and acceleration.
[0039] The foundation height is calculated based on the load condition, and the height value is dynamically compensated based on the vehicle speed.
[0040] Calculate the target height;
[0041] Detect road surface undulations ahead and adjust the height of the rain curtain in advance based on the target height;
[0042] The actuator 40 is driven by closed-loop control, and an emergency lifting is triggered based on feedback from the pressure sensor.
[0043] In some embodiments, the multi-source data fusion algorithm is a Kalman filter algorithm, used to perform noise elimination and fusion on road surface elevation, suspension height and vehicle speed data, and output the target height of the rain curtain.
[0044] In some embodiments, the intelligent control unit 30 is configured to distinguish between bumpy, high-speed, and slope conditions based on acceleration and vehicle speed data, and dynamically allocate adjustment weights to optimize the target height calculation.
[0045] In some embodiments, the emergency lifting command has the highest priority. When triggered, the actuator 40 forcibly interrupts the current command and lifts the rain curtain to a preset safe height.
[0046] In some embodiments, the formula for calculating the dynamic compensation height value is: ΔH=0.2×(v / 100)2, where v is the real-time vehicle speed, and when the vehicle speed is ≥80km / h, ΔH is limited to the maximum value; target height=base height±ΔH.
[0047] This embodiment also provides a method for adaptive adjustment of rain curtain height, including the following steps:
[0048] S101: Real-time detection of road surface elevation and undulation information (such as rainwater, potholes, speed bumps, etc.) via road surface perception sensor 10; synchronous acquisition of road conditions, vehicle speed, vehicle weight, and acceleration data.
[0049] S102: The vehicle load, speed and acceleration data are acquired through the vehicle dynamic parameter acquisition module 20; the current working condition type is determined based on road conditions, vehicle speed and load (such as smooth road + high speed, smooth road + low speed + high load, smooth road + low speed + empty, pothole road, etc.).
[0050] S103: The acquired data is fused using a Kalman filter algorithm to calculate the target height of the rain curtain; for example:
[0051] Foundation height: According to standard regulations, the static reference value is calculated based on the load condition (suspension height). (For example, if the standard design height is 280mm, and the load reduces it by 20mm, then the foundation height under this load will be reduced by 20mm.)
[0052] Dynamic compensation:
[0053] When the vehicle speed exceeds a certain speed (e.g., ≥80km / h), raise the rain curtain to its highest position to reduce wind resistance (formula: ΔH=0.2×(v / 100)). 2 (ΔH reaches its maximum value when V reaches a certain speed). When the road surface sensing sensor detects potholes ahead, it raises the rain curtain in advance to prevent it from touching the ground.
[0054] S104: Adjusts the target height according to the vehicle speed dynamic compensation formula and anticipates the lifting action based on road surface undulations ahead; drives the actuator 40 to adjust the rain curtain to the target height and monitors the risk of ground contact in real time to trigger an emergency lift. After receiving the target height adjustment from the intelligent control unit, the motor rotates upward or downward to drive the rain curtain to rise or fall.
[0055] In some embodiments, the calculation steps for the base height specifically include:
[0056] Based on the data from the suspension height sensor, the vehicle load status is mapped to generate a static reference height H_base;
[0057] Based on the ground clearance range under no-load and full-load conditions specified in the standard regulations, H_base is dynamically adjusted to ensure that H_base meets the lower and upper limits of the regulations.
[0058] Multi-source data fusion and real-time perception: By integrating road perception sensors (LiDAR / ultrasound) and vehicle dynamic parameters (vehicle speed, suspension height, acceleration), a real-time perception network for vehicle status and road conditions is constructed.
[0059] Dynamic compensation algorithm and working condition classification: Based on preset rules and dynamic compensation formula, the target ground clearance is calculated by combining load, vehicle speed and road condition type (bumpy, slope, rain).
[0060] Fast-response actuator: The mechanical design of lever mechanism + electric push rod / hydraulic actuator, combined with closed-loop control, enables rapid adjustment of the rain curtain height.
[0061] Safety redundancy mechanism: Pressure sensors are embedded at the bottom of the rain curtain to monitor the risk of ground contact in real time and trigger emergency lifting.
[0062] The technical solution adopted in this invention is as follows: Real-time and accurate sensing of vehicle load, speed, and road surface undulations via sensors enables dynamic adjustment of the rain curtain height. Specifically:
[0063] The suspension height sensor 2 detects the vehicle's load and calculates the basic height that meets the standards and regulations based on the detection results.
[0064] When the vehicle speed sensor detects that the vehicle is traveling at high speed, the system will dynamically raise the rain curtain to effectively reduce wind resistance.
[0065] Once the road surface sensor detects potholes, it will raise the rain curtain in advance to prevent the rain curtain from touching the ground.
[0066] The advantages of this invention are that it can keep the ground clearance of the rain curtain at the optimal range, which can effectively block splashing water mist and effectively prevent the rain curtain from being mechanically damaged, thereby significantly improving driving safety.
[0067] Manually adjusting the height of the rain curtain has many problems. On the one hand, it relies too much on the driver's experience, and on the other hand, it cannot respond to sudden road conditions in a timely manner, such as when the vehicle suddenly encounters a bump.
[0068] To address these issues, the technical solution of this invention is: to adopt a fully automatic adjustment method, requiring no manual intervention, and to use algorithms for prediction, such as proactively addressing road surface undulations. Specifically:
[0069] After the accelerometer detects the frequency of the vehicle's bumps, the system classifies it as a "continuous bump" scenario, at which point the rain curtain will remain moderately raised.
[0070] The lidar pre-scans the road ahead, and the control unit can issue a lifting command 0.5 seconds in advance.
[0071] Its advantage is that it achieves fully automated operation, effectively avoiding human error and ensuring that the splash protection effect is always stable and reliable.
[0072] Traditional rain curtains can increase wind resistance when vehicles are traveling at high speeds due to their low ground clearance, which in turn increases vehicle energy consumption.
[0073] The technical solution of this invention is to dynamically adjust the height of the rain curtain according to the vehicle speed, and the adjustment formula is ΔH=0.2×(v / 100). 2 The specific causal relationship is as follows: the control unit calculates the impact of wind resistance and raises the rain curtain by a height ΔH based on the calculation results. Under good weather and road conditions, ΔH increases continuously with vehicle speed, raising the rain curtain's ground clearance to its maximum at speeds of 80 km / h and above. From a physics perspective, raising the rain curtain reduces the frontal area, thereby lowering the drag coefficient and ultimately reducing energy consumption.
[0074] Traditional rain curtains lack a ground contact protection mechanism, which can easily lead to mechanical damage when a vehicle encounters a sudden and severe bump.
[0075] The technical solution of this invention is as follows: a pressure sensor is embedded at the bottom of the rain curtain, and an emergency lifting logic is set, with this logic having the highest priority. Specifically, the relationship is as follows:
[0076] When the pressure sensor detects the ground pressure, it will immediately trigger an emergency lifting command, and the electric push rod will be forcibly retracted to raise the rain curtain.
[0077] The control unit verifies the execution results in real time (through encoder feedback) and performs secondary error correction.
[0078] The advantages of this invention are reduced risk of ground contact and significantly enhanced fault tolerance of the system.
[0079] A single sensor, such as relying solely on the vehicle speed sensor, cannot cover complex operating conditions, such as when the vehicle is under multiple conditions such as being loaded, bumpy, or on a slope.
[0080] The technical solution of this invention is as follows: It employs a multi-source data fusion approach, utilizing lidar (for detecting road conditions), a suspension height sensor (for detecting load), and an acceleration sensor (for detecting vibration). Specifically, when the vehicle is uphill, fully loaded, and experiencing bumpy conditions, the control unit comprehensively calculates the height compensation amount. Sensor noise is eliminated using a Kalman filter algorithm, thereby outputting an accurate target height.
[0081] The advantage of this invention is that it can adapt to extreme and complex working conditions, such as heavy-duty transportation in mountainous areas, and its anti-splash performance will not be reduced.
[0082] Fixed-height rain curtains have this problem: after a period of vehicle use, if the rain curtain suffers mechanical damage, its ground clearance may exceed the range specified by relevant standards and regulations.
[0083] The technical solution of this invention dynamically adjusts the height of the rain curtain based on the vehicle's load condition to ensure that the ground clearance always meets the standard. Specifically:
[0084] When the suspension height sensor detects that the vehicle is unloaded, the control unit will lower the rain curtain to the standard lower limit.
[0085] When the vehicle is fully loaded, the rain curtain will rise accordingly, which avoids scratches and meets the upper limit requirements of the standard.
[0086] The advantage of this invention is that it meets regulatory requirements under all operating conditions, effectively avoiding legal risks such as recalls or even regulatory penalties caused by static design defects.
[0087] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A mechanical structure of a rain curtain height self-adaptive adjusting system, characterized in that, Comprising: a mounting base rigidly connected to the vehicle body; an actuator connected to the mounting base; a guide rail mechanism provided on the mounting base; a rain curtain connected to the guide rail mechanism, and driven to rise or fall by the actuator.
2. The mechanical structure of a rain curtain height self-adapting adjustment system according to claim 1, wherein, The mounting base is fixed on the vehicle chassis or fender support.
3. The mechanical structure of a rain curtain height self-adapting adjustment system according to claim 1, wherein, The actuator is an electric push rod or a hydraulic actuator.
4. The mechanical structure of a rain curtain height self-adapting adjustment system according to claim 1, wherein, The guide rail mechanism includes a guide rail and a track slidingly provided in the guide rail, the lower end of the track is connected to the rain curtain, and the upper end of the track is connected to the actuator.
5. The mechanical structure of a rain curtain height self-adapting adjustment system according to claim 1, wherein, The rain curtain is a flexible rain curtain.
6. The mechanical structure of a rain curtain height self-adapting adjustment system according to claim 1, wherein, The rain curtain is provided with a sawtooth guide structure at the bottom and embedded with a pressure sensor.