Stepless variable curvature rearview mirror, system, vehicle and intelligent adjusting method

Abstract

The invention discloses a stepless variable curvature rearview mirror, a system, a vehicle and an intelligent adjusting method, and relates to the technical field of automobile rearview mirror adjustment. The rearview mirror comprises a mirror shell, a flexible lens, a pressing assembly and an electric telescopic mechanism arranged in the mirror shell, the output end of the telescopic mechanism is connected with a top pressing piece and abuts against the inner side of the lens, and the lens can be driven to deform to achieve stepless adjustment of the curvature radius larger than or equal to 350 mm. The intelligent system comprises the rearview mirror, a controller and a sensor for collecting gear / seat positions, and the controller controls the telescopic mechanism to adjust the curvature according to information of the sensor. The adjusting method comprises the steps of acquiring state information, matching a target curvature and driving the lens to deform. The multifunctional rearview mirror integrates the functions of the main rearview mirror, the wide-angle mirror and the blind compensation mirror, the arrangement number and space are reduced, the multifunctional rearview mirror is suitable for different driving scenes, and driving convenience and safety are improved; the vehicle is equipped with the rearview mirror and / or the system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile rearview mirror adjustment, in particular to a stepless variable curvature rearview mirror, system, vehicle and intelligent adjustment method. BACKGROUND

[0002] As a core visual aid device in the process of vehicle driving, the performance of automobile rearview mirror is directly related to the accuracy of the driver's judgment on the environment behind the vehicle, and further affects the driving safety and the convenience of operation. In the long-term development of the automobile industry, the design of the rearview mirror has always been focused on the two core demands of "visual coverage range" and "imaging stability", and the adjustment ability of the lens curvature, as a key parameter determining the visual range, has become an important indicator to measure the performance of the rearview mirror.

[0003] The size of the curvature of the rearview mirror lens affects the size of the observable rearview area. The regulation requires that the curvature radius of the main outside rearview mirror be not less than 1200mm, and the curvature radius of the wide-angle mirror and the blind-filling mirror be not less than 300mm. In the process of vehicle driving forward, the visual field behind the vehicle is observed through the main rearview mirror, and the lens with a curvature greater than 1200mm meets the requirements. When the vehicle is driving backward, the visual field range needs to be larger, including the tire outside and the lower visual field, at this time, the main rearview mirror is difficult to meet the requirements, and needs to be observed through the wide-angle mirror and the blind-filling mirror.

[0004] The existing scheme is to increase the wide-angle mirror or the blind-filling mirror, which needs a suitable installation position and space on the vehicle, not only increasing the cost and weight, but also bringing other influences. Figure 1 As shown in the figure, the variable curvature rearview mirror of the existing passenger car is on a lens, one side of which is mostly according to the curvature of the main outside rearview mirror, and the other side of which is a small part according to the curvature of the auxiliary rearview mirror. The transition of the two sides of the lens with different curvatures is severely deformed in imaging, and the smaller curvature side is too small in size, although it can increase the rear visual field range, but the improvement is limited, and it cannot meet the visual field range of the wide-angle mirror. Figure 2 and Figure 3 As shown in the figure, the existing commercial vehicle is to install the main rearview mirror and the wide-angle lens in the same mirror frame or as two independent rearview mirrors. The main rearview mirror lens and the wide-angle lens are separated, which occupies a large space and increases the weight, and blocks the forward visual field.

[0005] Therefore, there is an urgent need for a rearview mirror scheme that can realize stepless adjustment of curvature, integrate multiple lens functions, be lightweight and intelligently adapt, to solve the above technical problems. SUMMARY

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a continuously variable curvature rearview mirror, system, vehicle, and intelligent adjustment method. This invention integrates the main rearview mirror, wide-angle mirror, and blind spot mirror into a single rearview mirror. With only one rearview mirror installed, the curvature of the lens is adjusted to meet the needs of various driving scenarios. Simultaneously, the curvature adjustment is linked to vehicle gear shifting and seat adjustment, achieving intelligent interconnection.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: In a first aspect, the present invention provides a continuously variable curvature rearview mirror, comprising: Mirror case; Flexible lenses; A clamping assembly is used to assemble the flexible lens onto the lens housing; An electric telescopic mechanism is disposed inside the lens housing, and the output end of the electric telescopic mechanism is connected to a top pressure plate, which abuts against the inner side of the flexible lens; the electric telescopic mechanism is used to drive the top pressure plate to push the flexible lens to deform and change its curvature.

[0008] As a preferred embodiment of the present invention, the radius of curvature of the flexible lens is infinitely adjustable within a range of ≥350mm.

[0009] As a preferred embodiment of the present invention, the flexible lens is made of stainless steel and has a thickness of 1-3 mm.

[0010] As a preferred embodiment of the present invention, the top pressure plate has a circular structure, which includes an inner circular region and an outer annular region. The spherical radius of the inner circular region is 1200-1400 mm, the spherical radius of the outer annular region is 350 mm, and the spherical contour of the top pressure plate is adapted to the deformation trajectory of the flexible lens.

[0011] As a preferred embodiment of the present invention, the ratio of the projection radius of the inner circular region in the pushing direction to the projection ring width of the outer annular region in the pushing direction is 1:1-2.

[0012] As a preferred embodiment of the present invention, the clamping assembly includes a clamping frame and an inner clamping strip. The inner clamping strip is arranged circumferentially along the inner wall of the lens housing. A sliding limiting piece is fixedly connected to the periphery of the flexible lens. The sliding limiting piece is sandwiched between the clamping frame and the inner clamping strip and can slide perpendicular to the pushing direction. A limiting is formed between the first flange of the sliding limiting piece and the second flange of the clamping frame to prevent the flexible lens from coming out of the lens housing during deformation.

[0013] Secondly, the present invention also provides an intelligent adjustment system for a continuously variable curvature rearview mirror, comprising the continuously variable curvature rearview mirror, and further comprising: The controller is used to control the extension and retraction of the electric telescopic mechanism. Sensors are used to collect vehicle gear position information and / or seat position information; A wiring harness connects the controller to the sensor; The controller controls the extension and retraction of the electric telescopic mechanism based on vehicle gear information and / or seat position information to adjust the curvature of the flexible lens.

[0014] Thirdly, the present invention also provides an intelligent adjustment method for a continuously variable curvature rearview mirror, comprising the following steps: Obtain vehicle status information, including vehicle gear information and / or seat position information; Receive the status information and generate a target radius of curvature that matches the current status information according to a preset status information-radius of curvature mapping relationship; Controlling the extension and retraction of the electric telescopic mechanism drives the top pressure plate to push the flexible lens to deform to the target radius of curvature.

[0015] As a preferred embodiment of the present invention, when the vehicle gear information is forward gear, the target radius of curvature is ≥1200mm; when the vehicle gear information is reverse gear, the target radius of curvature is 350-400mm.

[0016] Fourthly, the present invention also provides a vehicle equipped with the continuously variable curvature rearview mirror and / or the intelligent adjustment system described above.

[0017] Compared with the prior art, the technical effects of the present invention are as follows: 1. This invention integrates the functions of a traditional main rearview mirror, wide-angle mirror, and blind spot mirror into a single rearview mirror through a core design of "flexible lens + electric telescopic top pressure." The flexible lens has a stepless adjustment range of curvature radius ≥350mm, covering the curvature requirements of regulations for main and exterior rearview mirrors (≥1200mm) and wide-angle / blind spot mirrors (≥300mm), eliminating the need for multiple lenses and mounting brackets. Compared to the multi-lens combination of "main rearview mirror + wide-angle mirror" in traditional commercial vehicles, this invention reduces the number of rearview mirrors, significantly shrinks the mirror size (avoiding space occupation by multiple lenses), and eliminates the problem of multiple lenses obstructing the forward view, thus improving driving safety. For passenger vehicles, it also solves the defects of traditional dual-curvature lenses, such as "severe image distortion at the transition point and small auxiliary area size," allowing a single mirror to meet the full-scene vision requirements.

[0018] 2. This invention uses an electric telescopic mechanism to drive the top pressure plate, which in turn deforms the flexible lens, achieving stepless adjustment of the curvature radius. The spherical contour of the top pressure plate (1300mm inner circular area and 350mm outer annular area) matches the lens deformation trajectory, ensuring uniform deformation and minimal image distortion. In specific scenarios, the target curvature radius is ≥1200mm in forward gear, meeting the requirement for clear long-distance vision; in reverse gear, it is ≥350mm, covering the outer and lower blind spots of the rear wheels. This eliminates the need for the driver to manually switch lenses or adjust angles, adapting to different driving scenarios such as forward, reverse, and low-speed maneuvering, thus addressing the pain point of traditional fixed-curvature rearview mirrors' poor scene adaptability.

[0019] 3. The intelligent adjustment system of the present invention collects vehicle gear information and / or seat position information through sensors. The controller automatically controls the electric telescopic mechanism to adjust the curvature of the lens according to the preset "state information-curvature radius" mapping relationship, eliminating the need for manual operation by the driver and reducing distraction during driving. At the same time, the seat position-related adjustment can adapt to drivers of different heights and driving habits, ensuring that each user can obtain the best field of vision matching their own line of sight. This avoids the cumbersome operation of traditional rearview mirrors where "the field of vision shifts after seat adjustment and needs to be manually compensated", further improving driving safety and humanized experience.

[0020] 4. The present invention has multiple stability advantages in structural design: the flexible lens is made of 1-3mm stainless steel, which has both flexibility (can be repeatedly deformed without permanent deformation) and rigidity (vibration resistance and wear resistance), and has a long service life; the clamping component is designed with "clamping frame + inner clamping strip + sliding limit piece", which allows the lens to slide in the vertical pushing direction when deformed, and prevents the lens from falling out by the flange limit, avoiding the lens from tearing or falling off during the deformation process.

[0021] 5. Compared with traditional multi-lens rearview mirrors, the single-lens integrated multi-functional design of this invention significantly reduces the number of components such as lenses and brackets, thereby reducing the overall weight (avoiding the extra weight of multiple lenses and brackets) and manufacturing costs (reducing component procurement and assembly steps). At the same time, the simplified mirror structure can reduce vehicle wind resistance (reducing wind resistance interference caused by multiple lenses), making it particularly suitable for new energy vehicles, commercial vehicles, and other models that require lightweight and low-energy consumption, thus balancing economic efficiency and industrial practicality.

[0022] 6. In response to the special vision requirements of special vehicles such as off-road vehicles and engineering vehicles when driving on mountain roads and narrow roads, this invention can meet the vision requirements of most road conditions by flexibly adjusting the curvature of the lens (without the need to install additional special lenses). This avoids the structural complexity and space shortage problems caused by "requiring additional special vision devices" for special vehicles, thus broadening the application range of rearview mirrors and improving the safety of special vehicles in driving and operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a variable curvature rearview mirror in an existing passenger vehicle.

[0024] Figure 2 This is a structural diagram of a variable curvature rearview mirror for existing commercial vehicles (integrated installation).

[0025] Figure 3 This is a structural diagram of a variable curvature rearview mirror for an existing commercial vehicle (installed separately).

[0026] Figure 4 This is a schematic diagram of the external structure of the infinitely variable curvature rearview mirror of the present invention.

[0027] Figure 5 This is a schematic diagram of the internal structure of the infinitely variable curvature rearview mirror of the present invention.

[0028] Figure 6 This is a schematic cross-sectional view of the infinitely variable curvature rearview mirror of the present invention.

[0029] Figure 7 for Figure 6 Enlarged structural diagram of the intermediate clamping assembly.

[0030] Figure 8 This is a schematic diagram of the intelligent adjustment system of the infinitely variable curvature rearview mirror of the present invention.

[0031] Reference numerals: 1. Lens housing; 2. Flexible lens; 201. Sliding limiting piece; 202. First flange; 3. Pressing assembly; 301. Pressing frame; 302. Inner pressing strip; 303. Second flange; 4. Electric telescopic mechanism; 5. Top pressing piece; 501. Inner circular area; 502. Outer annular area; 6. Controller; 7. Sensor; 8. Wiring harness; 9. Initial state of the lens; 10. Intermediate state of the lens; 11. Extreme state of the lens. Detailed Implementation

[0032] To make the technical solution, objectives, and advantages of the present invention clearer, the following description is provided in conjunction with the appendix. Figures 4-8 The present invention provides a more detailed description of the continuously variable curvature rearview mirror, system, vehicle, and intelligent adjustment method of the present invention, including specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof; the accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of protection of this patent. Some components may be omitted, enlarged, or reduced in the drawings, and their proportions do not represent the actual product dimensions; for those skilled in the art, the omission of some well-known structures and descriptions in the drawings is understandable, and the positional relationships described in the drawings are for illustrative purposes only and do not constitute a limitation thereof.

[0033] The core of this invention is to replace the traditional multi-lens combination scheme with the stepless deformation of flexible lenses, integrating the functions of the main rearview mirror (regulatory requirement: radius of curvature ≥1200mm), wide-angle mirror (radius of curvature ≥300mm), and blind spot mirror into a single rearview mirror. Through intelligent association with vehicle gear position and seat position (or extended vehicle posture), it achieves adaptive adjustment of the field of vision in different driving scenarios. Its core advantages are: solving the problems of "large space occupation, high cost, and image distortion in transition areas caused by separate multiple mirrors" in traditional rearview mirrors; improving the continuity of vision through stepless adjustment; and enhancing driving safety and convenience through intelligent linkage.

[0034] In this embodiment, as Figure 4 and Figure 5 As shown, the hardware structure of the continuously variable curvature rearview mirror mainly includes a mirror housing 1, a flexible lens 2, a clamping assembly 3, an electric telescopic mechanism 4, and a top pressure plate 5; Figure 8 As shown, the intelligent adjustment system includes a controller 6, a sensor 7, and a wiring harness 8; the following sections will explain the specific selection, parameter design, working principle, and application scenarios of each component.

[0035] The mirror housing 1 is made of ABS engineering plastic, which is not only lightweight (each mirror housing weighs only 200-250g), but also has good impact resistance and weather resistance, and can adapt to complex working conditions such as wind, rain and vibration during vehicle driving. The flexible lens 2, the clamping component 3, the electric telescopic mechanism 4 and the top pressure plate 5 are all integrated inside the mirror housing 1. The components work together to achieve the curvature adjustment function. Compared with traditional multi-lens rearview mirrors, the overall volume is reduced by 30%-40%, which effectively reduces the vehicle's wind resistance and avoids the problem of multiple lenses obstructing the forward vision.

[0036] In this embodiment, as Figure 6 As shown, the flexible lens 2 is made of 1mm thick 304 stainless steel (its thickness can be adjusted from 1-3mm according to vehicle requirements; for example, 1-2mm can be selected for passenger cars to balance lightweight and flexibility, while 2.5-3mm can be selected for commercial vehicles to improve deformation resistance). This material has three core advantages: First, it has excellent flexibility, achieving stable deformation under the push of the top pressure plate 5, and quickly returning to its initial state after deformation, with no permanent deformation after long-term use (simulating 100,000 deformation tests); second, it has moderate rigidity, preventing shaking due to slight vibrations during vehicle operation, ensuring stable imaging and solving the problem of blurred vision caused by vibration in traditional plastic flexible lenses; third, it is wear-resistant and corrosion-resistant, with a reflectivity of over 90% after polishing, and is not easily scratched or corroded by rain or dust when exposed to outdoor environments for a long time, extending its service life by 3-5 years compared to ordinary glass rearview mirrors.

[0037] Specifically, the flexible lens 2 has a stepless adjustment range of curvature radius of ≥350mm. This range covers the regulatory requirements for the curvature of the main exterior rearview mirror (≥1200mm) and wide-angle mirror (≥300mm), allowing a single lens to meet the field of vision needs of different driving scenarios. For example, when the lens curvature radius is 1300mm, its field of vision is consistent with that of a traditional main rearview mirror, with no image stretching or distortion. When the curvature radius is reduced to 350mm, the field of vision can be expanded to 1.2 times that of a traditional wide-angle mirror, clearly covering the area outside and below the rear wheels of the vehicle, eliminating the need for an additional blind spot mirror. The deformation process of the flexible lens 2 is as follows: Figure 6 As shown, the lens is in its initial state 9 (plane) → intermediate state 10 → extreme state 11 (radius of curvature 350mm).

[0038] In this embodiment, the top pressure plate 5 adopts a circular structure (its diameter is adapted to the flexible lens 2; for example, if the lens diameter is 150mm, the top pressure plate diameter is set to 120mm to ensure that the top pressure area covers the effective imaging range of the lens). It is divided into an inner circular area 501 and an outer annular area 502. Figure 5 As shown in the diagram, the inner circular region 501 has a spherical radius of 1300 mm, and the outer annular region 502 has a spherical radius of 350 mm. The ratio of the projection radius of the inner circular region in the pushing direction (set to 25 mm in this embodiment) to the projection ring width of the outer annular region (set to 35 mm in this embodiment) is 1:1.4. This ratio has been optimized through multiple simulations and actual measurements. If the ratio is too small (e.g., 1:0.8), the outer annular region is too narrow, resulting in insufficient deformation at the lens edge and limited field of view expansion. If the ratio is too large (e.g., 1:2.5), the inner circular region is too small, and the image at the center of the lens is prone to concave deformation. The ratio of 1:1.4 ensures that the curvature transition of the flexible lens 2 is uniform from the center to the edge during deformation, resulting in no significant image distortion. This solves the problem of severe image distortion at the transition between different curvatures on both sides in existing variable curvature lenses for passenger vehicles.

[0039] Optionally, the top pressure plate 5 is made of 6061 aluminum alloy, and after anodizing, the surface smoothness reaches Ra0.8μm, which can reduce lens wear when in contact with the inner side of the flexible lens 2. The top pressure plate 5 is connected to the output end telescopic rod of the electric telescopic mechanism 4 by a thread, which is convenient to disassemble. In the future, top pressure plates with different spherical contours can be replaced according to the vision requirements of different vehicle models, which has strong versatility.

[0040] In this embodiment, the clamping component 3 is crucial for ensuring the stable deformation of the flexible lens 2, and its structure is as follows: Figure 7As shown, it includes a clamping frame 301 and an inner clamping strip 302. The inner clamping strip 302 is made of silicone (Shore hardness 50-60 degrees) and is fixed along the circumference of the inner wall of the lens housing 1 by a buckle. It can not only buffer the impact force when the lens is deformed, but also play a sealing role to prevent dust and rainwater from entering the lens housing and damaging the electric telescopic mechanism 4. The clamping frame 301 is made of PP plastic and is fixed to the edge of the lens housing 1 by screws or buckles. It forms a 3mm gap with the inner clamping strip 302. The sliding limit piece 201 (made of stainless steel) is clamped in the gap, and the sliding limit piece 201 is fixedly connected to the periphery of the flexible lens 2 by high-strength double-sided adhesive.

[0041] Specifically, the core design feature of the sliding limiting piece 201 is that it can slide along the direction perpendicular to the pushing direction of the top pressure plate (i.e., the radial direction of the lens): when the electric telescopic mechanism 4 drives the top pressure plate 5 to push the center of the lens outward, the edge of the lens will retract towards the center. At this time, the sliding limiting piece 201 can slide synchronously within the gap between the pressing frame 301 and the inner pressing strip 302, avoiding tearing or wrinkling of the lens due to the fixed edge. At the same time, the edge of the sliding limiting piece 201 is folded down to form a first flange 202, and the inner side of the pressing frame 301 is folded inward to form a second flange 303. The first flange 202 and the second flange 303 are interlocked, which can effectively prevent the lens from coming out of the lens housing 1 under the maximum deformation state (curvature radius of 350mm), further improving the structural stability.

[0042] In this embodiment, the electric telescopic mechanism 4 can be a miniature telescopic rod driven by a servo motor or a stepper motor (20mm stroke, 50N rated thrust). The core advantage of the stepper motor is its high control precision and step angle of 1.8°. After transmission through a reduction gear set (reduction ratio 1:100), the minimum extension of the telescopic rod can reach 0.005mm, fully meeting the requirement of "stepless adjustment". Compared with traditional pneumatic or hydraulic drive methods, stepper motor drive has no lag. Switching from "forward curvature (1300mm)" to "reverse curvature (350mm)" only takes 1-2 seconds, with fast response speed, avoiding the driver missing key visual information due to lens adjustment delay.

[0043] Optionally, the electric telescopic mechanism 4 is powered by 12V (compatible with the vehicle's low-voltage power supply system), and its outer casing is encased in a waterproof sealing ring (IP67 protection rating) to prevent rainwater from seeping into the motor and causing a short circuit, thus adapting to the harsh outdoor driving environment. Furthermore, a pressure sensor is installed between the front end of the telescopic rod and the top pressure plate 5. When the pressure of the top pressure plate 5 on the lens exceeds 30N, the sensor sends a signal to the controller 6, controlling the stepper motor to stop telescopicing, preventing excessive pressure from causing the lens to break, thus forming an "overpressure protection" mechanism.

[0044] The intelligent adjustment system in this embodiment is based on the automatic correlation between "vehicle status" and "lens curvature". Figure 8 As shown, it includes a controller 6, a sensor 7, and a wiring harness 8. Its design goal is to reduce the driver's manual adjustment of the rearview mirrors and improve driving safety and convenience.

[0045] Sensor 7 includes a gear position sensor and a seat position sensor: The gear position sensor uses a Hall effect sensor, which is directly connected to the gear position switch of the vehicle's transmission. It can collect the current gear position of the vehicle (forward, reverse, neutral, etc.) in real time, with a collection frequency of 100ms / time, to ensure that the gear position signal is transmitted without delay.

[0046] The seat position sensor is a grating-type displacement sensor, installed on the seat's front-to-back sliding rails and height adjustment bracket. It can collect the seat's front-to-back sliding distance (range 0-300mm, accuracy ±1mm) and seat height (range 0-150mm, accuracy ±1mm), with a sampling frequency of 200ms / time. This sensor identifies different drivers' seat adjustment habits and matches the corresponding lens curvature. For example, a driver who is 180cm tall typically moves the seat back to a position with a front-to-back distance of 200mm and a height of 100mm. At this position, the driver's field of vision is focused backward, and the controller 6 will adjust the lens curvature radius to 1300mm to ensure that the side-rear field of vision matches the driver's line of sight. Conversely, if a driver who is 160cm tall moves the seat forward to a position with a front-to-back distance of 100mm and a height of 80mm, the controller will fine-tune the curvature radius to 1250mm to prevent unclear details due to an excessively far field of vision.

[0047] The controller 6 has a pre-stored "status information - radius of curvature" mapping table (as shown in Table 1). This mapping table was optimized through extensive real-vehicle testing and can cover more than 95% of the driver's usage scenarios. Table 1 When the controller 6 receives the signal from the sensor 7 via the wiring harness 8, it queries the mapping table to determine the target radius of curvature corresponding to the current state, and then sends a control command to the electric telescopic mechanism 4. For example, when the vehicle is shifted into reverse gear, and the seat's fore-and-aft distance is 180mm and its height is 110mm, the controller calculates the target radius of curvature to be 380mm. At this time, the stepper motor drives the telescopic rod to extend, and the top pressure plate 5 pushes the flexible lens 2 to deform to a radius of curvature of 380mm. The driver can clearly observe the outer side of the rear wheels and obstacles on the ground without having to look down or adjust their body posture.

[0048] In addition, the controller 6 also supports a "manual fine-tuning" function. The driver can adjust the radius of curvature by ±50mm based on the target radius of curvature through the buttons on the steering wheel (or the touch screen of the central control screen). The adjusted parameters will be automatically stored in the controller's EEPROM. The next time the driver uses the vehicle, the controller will prioritize calling the stored personalized parameters to further improve the ease of use.

[0049] The intelligent adjustment method in this embodiment is implemented based on the above system, and its specific execution steps are as follows, and it has differentiated adaptability in different driving scenarios: (I) Standard Implementation Process 1. Status Information Acquisition Phase: After the vehicle is powered on, sensor 7 immediately starts and begins to collect information. The gear position sensor monitors the gear position of the transmission in real time, while the seat position sensor updates the position data synchronously when the driver adjusts the seat. If the driver does not adjust the seat, the sensor will default to calling the previously stored seat position parameters to avoid wasting resources due to repeated collection.

[0050] 2. Target curvature determination stage: After receiving the status information sent by the sensor 7, the controller 6 first determines whether the gear is "reverse": If it is reverse, it directly uses "350-400mm" as the basic curvature range and makes minor adjustments based on the seat position; if it is forward, it matches the corresponding curvature range from the mapping table according to the seat's fore-and-aft distance and height; if it is neutral, the controller keeps the current curvature unchanged to avoid frequent adjustments affecting the driver's vision adaptation.

[0051] 3. Curvature Adjustment Execution Stage: The controller 6 sends a control signal to the electric telescopic mechanism 4, and the stepper motor drives the telescopic rod to extend or retract according to the signal. For example, when adjusting the curvature from 1300mm in forward gear to 380mm in reverse gear, the telescopic rod needs to extend by a preset amount (the controller also has a preset "curvature radius - extension amount" mapping table, which can determine the corresponding extension amount according to different curvature radius requirements. This mapping table can also be optimized through actual vehicle testing, which will not be elaborated on in this invention). At the same time, the pressure sensor provides real-time feedback on the pressure value of the top pressure plate 5. If the pressure exceeds the safety upper limit, the controller immediately stops the motor and displays a "rearview mirror adjustment abnormality" indicator on the instrument panel to ensure equipment safety.

[0052] 4. Confirmation after adjustment: After the curvature adjustment is completed, the controller 6 will send an "adjustment complete" signal to the vehicle CAN bus through the wiring harness 8. If the vehicle is equipped with a central control screen, the current lens curvature radius can be displayed on the screen for the driver's confirmation. If the driver manually fine-tunes the curvature, the controller will automatically update the personalized parameters in the mapping table and call them directly the next time it is used.

[0053] (ii) Adaptation and optimization for special scenarios Off-road vehicle mountain road / narrow road scenario: When off-road vehicles are driving on mountain roads or narrow roads, they have special requirements for visibility of the surrounding road conditions (such as the need to observe the road edge, the distance between the vehicle and obstacles). In this embodiment, the controller 6 can receive the steering angle signal from the vehicle's ESP (Electronic Stability Program). When the steering wheel angle exceeds 30° (i.e., sharp turns or passing scenarios), the controller will automatically adjust the lens curvature radius to 500-600mm. Compared to the 1300mm curvature of the forward gear, the field of vision is expanded by more than 50%, and the driver can clearly observe the distance between the side of the vehicle and the road edge, avoiding scratches; when the steering wheel is straightened, the curvature automatically returns to the default value of the forward gear, without the need for manual operation by the driver.

[0054] Key advantages compared to traditional rearview mirrors: 1. Functional integration, reducing cost and space occupation: This embodiment achieves the functions of a main rearview mirror, a wide-angle mirror, and a blind spot mirror with a single lens, eliminating the need for multiple lenses and mounting brackets on the vehicle. Compared to the traditional combination of a "main rearview mirror + wide-angle mirror" in commercial vehicles, the weight of a single rearview mirror is reduced, lowering the overall cost of the vehicle's rearview mirror assembly. Simultaneously, the smaller size of the mirror housing 1 avoids the problem of multiple lenses obstructing the forward view, improving driving safety.

[0055] 2. High precision of stepless adjustment and excellent imaging quality: Traditional variable curvature lenses can only achieve "two fixed curvatures", and the imaging distortion at the transition is severe; this embodiment uses stepper motor drive and pressure feedback control, the curvature radius can be steplessly adjusted within a range of ≥350mm, and the spherical contour design of the top pressure plate makes the lens deformation uniform and the imaging distortion small, solving the pain point of "the incompatibility between field of view expansion and imaging quality".

[0056] 3. Intelligent vehicle status association enhances driving convenience: Traditional rearview mirrors require manual adjustment of angle or curvature by the driver, which is cumbersome and easily distracts attention. This embodiment automatically collects signals from gear position, seat position, and even steering angle using sensors to achieve automatic curvature adjustment and supports personalized parameter storage to adapt to different drivers' usage habits. User experience testing shows that in vehicles equipped with this rearview mirror, the driver's "rearview mirror adjustment time" is reduced from the traditional 30-60 seconds to 1-2 seconds (automatic adjustment), improving driving focus.

[0057] In summary, this embodiment solves the problems of existing rearview mirrors such as "single function, image distortion, and cumbersome manual adjustment" by detailing the component structure, intelligent adjustment system, and method of the continuously variable curvature rearview mirror. It is practical, economical, and safe, and can be widely used in various types of vehicles, thus having extremely high industrialization value.

[0058] Based on the description and accompanying drawings of this invention, those skilled in the art can readily manufacture or use the continuously variable curvature rearview mirror, system, vehicle, and intelligent adjustment method of this invention, and can achieve the positive effects described in this invention.

[0059] Unless otherwise specified, in this invention, terms such as "length," "width," "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, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0060] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A continuously variable curvature rearview mirror, characterized in that, include: Mirror casing (1); Flexible lenses (2); A clamping assembly (3) is used to assemble the flexible lens (2) onto the lens housing (1); An electric telescopic mechanism (4) is provided inside the lens housing (1), and the output end of the electric telescopic mechanism (4) is connected to a top pressure plate (5), which abuts against the inner side of the flexible lens (2); the electric telescopic mechanism (4) is used to drive the top pressure plate (5) to push the flexible lens (2) to deform and change its curvature.

2. The continuously variable curvature rearview mirror according to claim 1, characterized in that, The radius of curvature of the flexible lens (2) has a stepless adjustment range of ≥350mm.

3. The continuously variable curvature rearview mirror according to claim 1 or 2, characterized in that, The flexible lens (2) is made of stainless steel and has a thickness of 1-3mm.

4. The continuously variable curvature rearview mirror according to claim 1, characterized in that, The top pressure plate (5) has a circular structure, which includes an inner circular area (501) and an outer annular area (502). The spherical radius of the inner circular area (501) is 1200-1400mm, and the spherical radius of the outer annular area (502) is 350mm. The spherical contour of the top pressure plate (5) is adapted to the deformation trajectory of the flexible lens (2).

5. The continuously variable curvature rearview mirror according to claim 4, characterized in that, The ratio of the projection radius of the inner circular region (501) in the pushing direction to the projection ring width of the outer annular region (502) in the pushing direction is 1:1-2.

6. The continuously variable curvature rearview mirror according to claim 1, characterized in that, The clamping assembly (3) includes a clamping frame (301) and an inner clamping strip (302). The inner clamping strip (302) is arranged circumferentially along the inner wall of the lens housing (1). A sliding limiting piece (201) is fixedly connected to the periphery of the flexible lens (2). The sliding limiting piece (201) is sandwiched between the clamping frame (301) and the inner clamping strip (302) and can slide perpendicular to the pushing direction. A limit is formed between the first flange (202) of the sliding limiting piece (201) and the second flange (303) of the clamping frame (301) to prevent the flexible lens (2) from coming out of the lens housing (1) during deformation.

7. An intelligent adjustment system for a continuously variable curvature rearview mirror, characterized in that, The continuously variable curvature rearview mirror according to any one of claims 1-6 further includes: The controller (6) is used to control the extension and retraction of the electric telescopic mechanism (4); Sensor (7) is used to collect vehicle gear position information and / or seat position information; Wiring harness (8) connects the controller (6) and the sensor (7); The controller (6) controls the extension and retraction of the electric telescopic mechanism (4) according to the vehicle gear information and / or seat position information, so as to adjust the curvature of the flexible lens (2).

8. A method for intelligent adjustment of a continuously variable curvature rearview mirror, characterized in that, Includes the following steps: Obtain vehicle status information, including vehicle gear information and / or seat position information; Receive the status information and generate a target radius of curvature that matches the current status information according to a preset status information-radius of curvature mapping relationship; Control the extension and retraction of the electric telescopic mechanism (4) to drive the top pressure plate (5) to push the flexible lens (2) to deform to the target radius of curvature.

9. The intelligent adjustment method according to claim 8, characterized in that, When the vehicle gear information is forward, the target radius of curvature is ≥1200mm; when the vehicle gear information is reverse, the target radius of curvature is 350-400mm.

10. A vehicle, characterized in that, It is equipped with a continuously variable curvature rearview mirror as described in any one of claims 1 to 6 and / or the intelligent adjustment system as described in claim 7.

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