Windscreen wiper and vehicle

Abstract

The embodiment of the invention provides a windscreen wiper and a vehicle, and the windscreen wiper comprises a wiping arm which is rotatably installed on the side, facing the outside of the vehicle, of a front windshield; the scraping strip is arranged between the scraping arm and the front windshield; the driving unit is arranged on the scraping arm and connected with the scraping strip so that the scraping strip can rotate along with the scraping arm, the driving unit comprises a driving base, the side, facing the front windshield, of the driving base is rotationally connected with a rotating shaft, and the rotating shaft extends in the thickness direction of the front windshield and is fixedly connected with the scraping strip; the first driving mechanism is arranged on the scraping arm and is in transmission connection with the driving seat so that the driving seat can stretch out and draw back in the length direction of the driving seat; and the second driving mechanism is arranged on the driving seat and is in transmission connection with the rotating shaft so as to drive the rotating shaft to rotate. According to the windscreen wiper, the driving unit is arranged on the wiping arm, so that the wiping strip can stretch out, draw back and rotate relative to the wiping arm, the cleaning area can be enlarged, and cleaning dead angles are reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a windshield wiper and a vehicle. Background Technology

[0002] In existing vehicle wiper systems, wipers typically use a motor-driven linkage mechanism to move the wiper arm and blades in a reciprocating motion along the windshield surface to remove rainwater, dust, or other adhering substances.

[0003] The mechanical structure of windshield wiper systems means that their wiping range and path are not adjustable, making it difficult to adapt to the diverse shapes and sizes of windshields used in different vehicle models. Especially for windshields with large curvature, irregular contours, or ultra-wide designs, traditional wipers often fail to cover enough areas, creating blind spots at the edges or corners, severely affecting the driver's forward and side visibility and posing potential driving safety hazards. Summary of the Invention

[0004] This application provides a windshield wiper and a vehicle. By providing a drive unit on the wiper arm, the wiper blade has telescopic and rotational motion relative to the wiper arm, which helps to expand the cleaning area and reduce cleaning dead corners.

[0005] In a first aspect, embodiments of this application provide a windshield wiper for cleaning a car's windshield. The wiper includes: a wiper arm rotatably mounted on the side of the windshield facing outwards; a wiper blade disposed between the wiper arm and the windshield; and a drive unit disposed on the wiper arm and connected to the wiper blade, such that the wiper blade rotates with the wiper arm. The drive unit includes: a drive seat, on the side of the drive seat facing the windshield, a rotating shaft is rotatably connected thereto, the rotating shaft extending along the thickness direction of the windshield and fixedly connected to the wiper blade; a first drive mechanism disposed on the wiper arm, the first drive mechanism being throttle-connected to the drive seat to extend and retract along its own length; and a second drive mechanism disposed on the drive seat, the second drive mechanism being throttle-connected to the rotating shaft to drive the rotating shaft to rotate.

[0006] In operation, the wiper arm of this invention, driven by a third drive unit mounted on the vehicle frame, reciprocates along the surface of the windshield to provide basic coverage. Simultaneously, a drive unit integrated into the wiper arm works in concert: a first drive mechanism extends and retracts the drive seat along its length, causing the connected wiper blade to extend and retract, thereby precisely positioning the wiper blade to the area requiring cleaning (such as mud or water splashes or oil film accumulation areas). A second drive mechanism drives a rotating shaft to rotate around its axis (i.e., along the thickness direction of the windshield), causing the wiper blade to change its relative angle to the glass surface or to perform small-amplitude localized oscillations, enhancing its ability to adhere to high-curvature areas or edge blind spots. This allows for on-demand cleaning of key visibility areas (such as directly in front of the driver and near the A-pillar), ensuring clear visibility during driving and reducing safety risks caused by obstructed vision.

[0007] In some embodiments, the first drive mechanism includes: a mounting base fixedly mounted on the side of the wiper arm facing the windshield; the mounting base includes a mounting plate parallel to the outer surface of the windshield; the mounting plate has a first mounting arm and a second mounting arm extending toward the windshield along the thickness direction of the windshield; an installation space is defined between the first mounting arm and the second mounting arm; the drive seat is telescopically disposed in the installation space; a first drive device is provided on one of the mounting plate, the first mounting arm, and the second mounting arm; the first drive device is throttlely connected to the drive seat to move the drive seat along its own length direction.

[0008] When cleaning a section of the windshield, the first drive unit is activated, and its output force is transmitted to the drive mount. Since the drive mount is constrained within the mounting space, it can only move telescopically parallel to the mounting plate (i.e., approximately along the length of the wiper arm). The mounting plate itself is parallel to the outer surface of the windshield, ensuring a stable geometric relationship between the entire guide structure and the glass surface. The mount is positioned flush against the inner side of the wiper arm, without increasing the overall height of the wiper or its frontal area, thus contributing to maintaining the vehicle's aerodynamic performance.

[0009] According to some embodiments of the present invention, the first driving device is disposed on the side of the mounting base opposite to the mounting space, the first drive shaft of the first driving device extends through the mounting base, a drive gear is fixedly mounted on the first drive shaft, and a rack extending along its own length direction is provided on the driving base, the drive gear meshing with the rack.

[0010] Thus, the first drive unit and the drive seat are connected by a gear and rack meshing transmission. The gear and rack meshing transmission has a definite transmission ratio and low backlash characteristics, which can achieve high-precision positioning of the drive seat, thereby meeting the stringent position control requirements of local cleaning.

[0011] According to some embodiments of the present invention, the rack has straight sections at both ends, and the straight sections at least protrude from the top of the rack.

[0012] When the first drive unit drives the drive gear to rotate, causing the rack and drive seat to extend and retract within the mounting space, the drive seat can move along its travel range. When the drive seat approaches the limit position of the extension and retraction stroke (maximum extension position or maximum retraction position), the drive gear approaches the straight section and can no longer mesh, forming a "locked rotation". This prevents the drive seat from dislodging from the mounting base, which would cause the wiper blade to go out of control, and helps improve the structural reliability of the wiper.

[0013] According to some embodiments of the present invention, one of the mounting base and the driving base is provided with a guide structure, and the other is provided with a mating structure, wherein the guide structure and the mating structure are guided and mated.

[0014] The guide structure and mating structure work together to ensure that the drive unit moves along the same axis with each extension and retraction, avoiding squeegee position deviation caused by gaps or deformation, thus ensuring the accuracy of the local cleaning process. At the same time, under complex conditions such as vehicle vibration, airflow impact, or changes in windshield curvature, it can also effectively suppress the shaking or twisting of the drive unit and maintain good contact pressure between the squeegee and the windshield.

[0015] According to some embodiments of the present invention, a portion of the structure of the drive seat facing the windshield is recessed in a direction away from the windshield to form a guide groove, the guide groove extending along the length direction of the drive seat, and the guide groove constituting the guide structure; a portion of the structure of the first mounting arm is bent toward the mounting plate to form a slider, the slider being slidably disposed in the guide groove, and the slider constituting the mating structure.

[0016] The guide groove is formed by the recess on the end face of the drive seat, and the slider is formed by the structure of the first mounting arm itself. There is no need to install an additional independent guide rail or slider assembly, which helps to reduce the internal space occupation and improve the integration effect of the wiper.

[0017] According to some embodiments of the present invention, the first driving device is disposed on the second mounting arm along the thickness direction of the windshield, and the guide groove is located on the side of the windshield near the meshing position of the driving gear and the rack.

[0018] Placing the guide groove near the windshield and downstream (glass side) of the transmission engagement point helps improve the installation stability between the drive seat and the mounting seat, thereby reducing wiper blade bounce or gap caused by the cantilever effect, improving the fit between the wiper blade and the windshield, and enhancing the cleaning effect.

[0019] According to some embodiments of the present invention, the rotating shaft has a first end facing the drive seat along its own length direction and a second end away from the drive seat, the second end being fixedly connected to the scraper, the second drive mechanism including a second drive device, the second drive device being fixedly mounted on the drive seat, and the second drive device being drively connected to the first end.

[0020] The second drive unit directly drives the first end of the rotating shaft, resulting in a short power path and fast response. It can precisely adjust the wiper blade angle, improving its ability to conform to irregularly shaped or highly curved windshield areas. The second drive unit is fixed to the drive base, eliminating the need for additional brackets or external transmission chains, saving internal space in the wiper arm, and facilitating multi-functional integration within a limited volume.

[0021] Secondly, embodiments of this application provide a vehicle, including: a frame, the frame having a windshield; a third drive device, disposed on the frame and tractively connected to the wiper arm; a windshield wiper as described above; an information acquisition unit, disposed on the frame, for acquiring dirt information on the windshield; and a control processing unit, respectively signal-connected to the drive unit of the windshield wiper and the information acquisition unit.

[0022] In the vehicle of the present invention, due to the use of the aforementioned windshield wipers, during vehicle operation, the information acquisition unit continuously or on demand scans the surface of the windshield to obtain images or data of dirt distribution and transmits the dirt information to the control processing unit. The control processing unit identifies the local area that needs to be cleaned based on a preset algorithm (such as image recognition, threshold judgment or AI model) and determines the required wiper blade position (controlled by the first drive mechanism) and wiping angle (controlled by the second drive mechanism).

[0023] Specifically, the third drive unit drives the wiper arm to swing as a whole, bringing the wiper closer to the target area; at the same time, the control unit sends instructions to the drive unit: the first drive mechanism drives the drive seat to extend and retract, precisely positioning the wiper blade to the dirty area; the second drive mechanism drives the rotating shaft to rotate, adjusting the wiper blade angle to best fit the curvature of the glass, and the wiper blade performs point-to-point, directional, or small-area reciprocating wiping in the target area, completing efficient local cleaning and avoiding ineffective work on clean areas.

[0024] In this way, the wiper blades only wipe the actual dirty areas, reducing unnecessary full-width wiping, which helps save vehicle energy and extend the life of the wiper system.

[0025] In some embodiments, the information acquisition unit includes at least one of an infrared sensor, an ultrasonic sensor, and an image sensor.

[0026] In this way, by using multiple sensors in synergy, the information acquisition unit can perform multi-source data fusion, thereby improving the robustness and accuracy of detection. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the windshield wiper according to an embodiment of the present invention;

[0029] Figure 2 This is a partial structural schematic diagram of the driving unit according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the first driving mechanism according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the drive seat according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0033] Figure label:

[0034] 100 - Windshield wipers;

[0035] 110-Scraper Arm;

[0036] 120-scraper;

[0037] 130 - Drive unit; 131 - Drive base; 1311 - Rack; 1312 - Straight section; 1313 - Guide groove;

[0038] 132-Rotating shaft; 133-First drive mechanism; 1331-Mounting base; 1331a-Mounting plate; 1331b-First mounting arm; 1331c-Slider; 1331d-Second mounting arm; 1332-First drive device; 1333-Drive gear;

[0039] 140-Guide Structure;

[0040] 150 - Fitting structure;

[0041] 200 - Vehicles.

[0042] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0044] In existing vehicle wiper systems, wipers typically use a motor-driven linkage mechanism to move the wiper arm and blades in a reciprocating motion along the windshield surface to remove rainwater, dust, or other adhering substances.

[0045] The mechanical structure of windshield wiper systems means that their wiping range and path are not adjustable, making it difficult to adapt to the diverse shapes and sizes of windshields used in different vehicle models. Especially for windshields with large curvature, irregular contours, or ultra-wide designs, traditional wipers often fail to cover enough areas, creating blind spots at the edges or corners, severely affecting the driver's forward and side visibility and posing potential driving safety hazards.

[0046] In view of this, embodiments of this application provide a windshield wiper and a vehicle, which, by providing a drive unit on the wiper arm, enables the wiper blade to have telescopic and rotational movements relative to the wiper arm, which is beneficial to expand the cleaning area and reduce cleaning dead corners.

[0047] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0048] refer to Figures 1 to 4 In a first aspect, embodiments of this application provide a windshield wiper 100 for cleaning the windshield of a car. The windshield wiper 100 includes a wiper arm 110, a wiper blade 120, and a drive unit 130.

[0049] The wiper arm 110, as the main support structure of the wiper 100, is rotatably mounted on the side of the windshield facing outwards. It supports the wiper blade 120 and the drive unit 130, and under the drive of the vehicle wiper motor (the third drive device mentioned later), the wiper 100 swings back and forth to cover the main area of ​​the windshield.

[0050] The wiper 120 is located between the wiper arm 110 and the windshield. The wiper 120 directly contacts the surface of the windshield and is used to wipe away rainwater, dust or other adhering substances. The position and posture of the wiper 120 are dynamically adjusted by the drive unit 130 to achieve localized and precise cleaning of the windshield.

[0051] The drive unit 130 is located on the wiper arm 110 and connected to the wiper blade 120, so that the wiper blade 120 rotates with the wiper arm 110. While the wiper arm 110 rotates as a whole, the drive unit 130 independently controls the position and angle of the wiper blade 120, breaking through the limitations of the fixed trajectory of traditional wipers.

[0052] The drive unit 130 includes a drive base 131, a first drive mechanism 133, and a second drive mechanism.

[0053] The drive seat 131 serves as the intermediate support component of the drive unit 130. The drive seat 131 is rotatably connected to the side facing the windshield with a rotating shaft 132. The rotating shaft 132 extends along the thickness direction of the windshield and is fixedly connected to the wiper blade 120. The rotation of the rotating shaft 132 can drive the wiper blade 120 to rotate around an axis perpendicular to the glass surface, thereby realizing the dynamic adjustment of the angle of the wiper blade 120 to adapt to local curvature or directional cleaning needs.

[0054] Thus, the telescopic movement of the drive seat 131 along its own length direction can change the radial position of the wiper blade 120 relative to the windshield, thereby adjusting the wiping area.

[0055] Understandably, the length direction of the drive mount 131 can be roughly aligned with the length direction of the wiper arm 110 to enhance the overall aesthetics of the wiper 100.

[0056] The first drive mechanism 133 is disposed on the scraper arm 110 and is connected to the drive seat 131 for transmission, so that the drive seat 131 can extend and retract along its own length. For example, the first drive mechanism 133 may include a linear motor installed inside the scraper arm 110, the output shaft of the linear motor being fixedly connected to the drive seat 131, and directly driving the drive seat 131 to extend and retract linearly along the radial direction of the scraper arm 110 through an electrical control signal; or, the first drive mechanism 133 may also include a lead screw driven by a micro motor and a nut fixedly connected to the drive seat 131, the rotation of the lead screw causing the nut and the drive seat 131 to move axially; or, the first drive mechanism 133 may also include a piston rod driven to extend and retract through an on-board hydraulic / pneumatic system, the piston rod being connected to the drive seat 131 to realize the position adjustment of the drive seat 131, thereby controlling the displacement of the scraper blade 120 in the radial direction of the scraper arm 110, and realizing selective coverage of different lateral areas.

[0057] The second drive mechanism is located in the drive base 131 and is connected to the rotating shaft 132 to drive the rotating shaft 132 to rotate. For example, the second drive mechanism may include a miniature servo motor installed in the drive base 131, with its output shaft coaxially connected to the rotating shaft 132. By controlling the forward and reverse rotation and angle of the miniature servo motor, the deflection posture of the scraper 120 can be precisely adjusted. Alternatively, the second drive mechanism may also include a planetary gear reducer motor integrated in the drive base 131, with its output end connected to the rotating shaft 132, providing high-precision angle control within a compact space, thereby improving the fit and cleaning efficiency of the windshield.

[0058] In operation, the wiper arm 110 of the present invention, driven by a third drive device on the vehicle frame, reciprocates along the surface of the windshield to achieve basic coverage. Simultaneously, the drive unit 130 integrated on the wiper arm 110 works in conjunction: a first drive mechanism 133 drives the drive seat 131 to extend and retract along its length, causing the connected wiper blade 120 to extend and retract, thereby precisely positioning the wiper blade 120 to the localized area requiring cleaning (such as mud splashes or oil film accumulation areas). A second drive mechanism drives the rotating shaft 132 to rotate around its axis (i.e., along the thickness direction of the windshield), causing the wiper blade 120 to change its relative angle with the glass surface or to perform small-amplitude localized oscillations, thereby enhancing its ability to adhere to high-curvature areas or edge blind spots. This allows for on-demand cleaning of key visibility areas (such as directly in front of the driver and near the A-pillar), ensuring clear visibility during driving and reducing safety risks caused by obstructed vision.

[0059] In addition, by adjusting the radial position of the scraper 120 through the first drive mechanism 133, targeted scraping can be performed only on the dirty areas, avoiding repeated work on already cleaned areas, reducing energy consumption, and preventing clean areas from being contaminated again.

[0060] refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the first drive mechanism 133 includes a mounting base 1331, which serves as the support and positioning base for the first drive mechanism 133. It is fixedly installed on the side of the scraper arm 110 facing the windshield and is used to integrate and stably support the first drive device 1332 and the drive base 131 to ensure the guidance of the telescopic movement and the structural rigidity.

[0061] Mounting base 1331 includes mounting plate 1331a, which constitutes the main body of mounting base 1331. It is arranged parallel to the outer surface of the windshield and provides a mounting reference surface for the first mounting arm 1331b, the second mounting arm 1331d and the first drive device 1332. At the same time, it optimizes the aerodynamic shape to reduce wind resistance.

[0062] Mounting plate 1331a has a first mounting arm 1331b and a second mounting arm 1331d extending toward the windshield along the thickness direction of the windshield. The first mounting arm 1331b and the second mounting arm 1331d define an installation space. The drive seat 131 is telescopically disposed in the installation space. Thus, the installation space provides a guide track for the drive seat 131 and also restricts the degree of freedom of the drive seat 131 in the non-telescopic direction, preventing the drive seat 131 from shaking or tilting.

[0063] A first driving device 1332 is provided on one of the mounting plate 1331a, the first mounting arm 1331b, and the second mounting arm 1331d. For example, the first driving device 1332 can be provided on the mounting plate 1331a, or it can be provided on the first mounting arm 1331b, or it can be provided on the second mounting arm 1331d.

[0064] The first driving device 1332 is connected to the driving seat 131 in a transmission manner, so that the driving seat 131 moves along its own length direction.

[0065] When cleaning a section of the windshield, the first drive unit 1332 is activated, and its output force is transmitted to the drive mount 131. Since the drive mount 131 is constrained within the mounting space, it can only move telescopically along a path parallel to the mounting plate 1331a (i.e., approximately along the length of the wiper arm 110). The mounting plate 1331a itself is parallel to the outer surface of the windshield, ensuring a stable geometric relationship between the entire guide structure 140 and the glass surface. The mount 1331 is arranged flush against the inner side of the wiper arm 110, without increasing the overall height or frontal area of ​​the wiper 100, thus contributing to maintaining the vehicle's aerodynamic performance.

[0066] refer to Figure 2 , Figure 3 and Figure 4 According to some embodiments of the present invention, a first drive device 1332 is disposed on the side of the mounting base 1331 away from the mounting space. The first drive shaft of the first drive device 1332 extends through the mounting base 1331. A drive gear 1333 is fixedly mounted on the first drive shaft. A rack 1311 extending along its own length direction is provided on the drive base 131. The drive gear 1333 meshes with the rack 1311.

[0067] In this embodiment, when the position of the scraper 120 needs to be adjusted, the first drive device 1332 is activated, driving the first transmission shaft to rotate. Since the first transmission shaft passes through the mounting base 1331, the drive gear 1333 fixed at its end located in the mounting space rotates accordingly. The drive gear 1333 meshes with the rack 1311 provided on the drive base 131, thereby converting the rotational motion into linear motion along the extension direction of the rack 1311 (i.e., the length direction of the drive base 131), pushing or pulling the drive base 131 to smoothly extend and retract within the mounting space.

[0068] Thus, the first drive device 1332 and the drive seat 131 are connected by a gear and rack 1311 meshing transmission. The gear and rack 1311 meshing transmission has a definite transmission ratio and low backlash characteristics, which can achieve high-precision positioning of the drive seat 131, thereby meeting the stringent requirements of position control for local cleaning.

[0069] refer to Figure 4 According to some embodiments of the present invention, the rack 1311 is provided with straight sections 1312 at both ends, and the straight sections 1312 protrude at least from the top end of the rack 1311.

[0070] When the first drive device 1332 drives the drive gear 1333 to rotate, causing the rack 1311 and drive seat 131 to extend and retract within the installation space, the drive seat 131 can move along its stroke range. When the drive seat 131 approaches the limit position of its extension and retraction stroke (maximum extension position or maximum retraction position), the drive gear 1333 approaches the straight section 1312 and cannot continue to mesh, forming a "locked rotation". This prevents the drive seat 131 from disengaging from the mounting seat 1331, which would cause the wiper blade 120 to go out of control, and helps to improve the structural reliability of the wiper 100.

[0071] refer to Figure 2 and Figure 3 According to some embodiments of the present invention, one of the mounting base 1331 and the drive base 131 is provided with a guide structure 140 and the other is provided with a mating structure 150. For example, the guide structure 140 may be provided on the mounting base 1331 and the mating structure 150 may be provided on the drive base 131, or the guide structure 140 may be provided on the drive base 131 and the mating structure 150 may be provided on the mounting base 1331.

[0072] The guide structure 140 and the mating structure 150 are guided and mated. For example, the guide structure 140 can be a guide rail, a groove, a guide rib, or a ball track extending along the length direction of the drive seat 131, and the mating structure 150 can be a slider 1331c that matches the guide rail, a boss that fits into the groove, or a groove that fits into the guide rib.

[0073] The guide structure 140 and the mating structure 150 work together to ensure that the drive seat 131 moves along the same axis with each extension and retraction, avoiding positional deviation of the scraper 120 due to gaps or deformation, which helps to ensure the accuracy of the local cleaning process. At the same time, under complex conditions such as vehicle vibration, airflow impact, or changes in the curvature of the windshield, it can also effectively suppress the shaking or twisting of the drive seat 131 and maintain good contact pressure between the scraper 120 and the windshield.

[0074] According to some embodiments of the present invention, a portion of the end face of the drive seat 131 facing the windshield is recessed in a direction away from the windshield to form a guide groove 1313. The guide groove 1313 extends along the length direction of the drive seat 131 and constitutes a guide structure 140 for accommodating and guiding the movement of the mating structure 150 and restricting the degree of freedom of the drive seat 131 in the non-telescopic direction.

[0075] Part of the structure of the first mounting arm 1331b bends toward the mounting plate 1331a to form a slider 1331c. The slider 1331c is slidably disposed in the guide groove 1313. The slider 1331c constitutes a mating structure 150. The slider 1331c and the guide groove 1313 form a sliding pair to achieve precise guidance and constraint of the telescopic movement of the drive seat 131.

[0076] The guide groove 1313 is formed by the recess on the end face of the drive seat 131, and the slider 1331c is formed by the structure of the first mounting arm 1331b itself. There is no need to install an additional independent guide rail or slider 1331c assembly, which helps to reduce the internal space occupation and improve the integration effect of the wiper 100.

[0077] Furthermore, the guide groove 1313 can be formed as a T-shaped groove or a dovetail groove, and the slider 1331c is formed as a corresponding shape, which is beneficial to improving the connection stability between the drive seat 131 and the mounting seat 1331.

[0078] According to some embodiments of the present invention, the first drive device 1332 is disposed on the second mounting arm 1331d. Along the thickness direction of the windshield, the guide groove 1313 is located on the side closer to the windshield where the drive gear 1333 meshes with the rack 1311, so that the guide groove 1313 is located on the "glass side" of the transmission meshing area, that is, closer to the surface of the windshield. The guide groove 1313 directly constrains the movement of the drive seat 131 near the glass end, preventing the end of the wiper blade 120 from lifting or shaking due to the cantilever effect. This helps to improve the installation stability between the drive seat 131 and the mounting seat 1331, thereby reducing the jump or gap of the wiper blade 120 caused by the cantilever effect, improving the fit between the wiper blade 120 and the windshield, and improving the cleaning effect.

[0079] According to some embodiments of the present invention, the rotating shaft 132 has a first end facing the drive seat 131 along its own length direction and a second end away from the drive seat 131. The second end is fixedly connected to the scraper 120. The second drive mechanism includes a second drive device, which is fixedly installed on the drive seat 131 and is drively connected to the first end.

[0080] The second drive unit directly drives the first end of the rotating shaft 132, resulting in a short power path and fast response. It can precisely adjust the angle of the wiper blade 120, improving its ability to conform to irregularly shaped or highly curved windshield areas. The second drive unit is fixed to the drive base 131, eliminating the need for additional brackets or external transmission chains, saving internal space in the wiper arm 110, and facilitating multi-functional integration within a limited volume.

[0081] In some embodiments, the first end may define a mounting cavity, and the second drive device fixedly mounted on the drive seat 131 may be integrated into the mounting cavity and connected to the rotating shaft 132 for transmission, which is beneficial to improving the integration and aesthetics of the wiper 100.

[0082] refer to Figure 5 Secondly, embodiments of this application provide a vehicle 200, which includes a frame, a third drive unit, the aforementioned windshield wiper 100, an information acquisition unit, and a control processing unit.

[0083] The frame serves as the main support structure of the vehicle 200, used to mount the windshield and other functional modules, and to provide the installation reference and operating environment for the wiper system.

[0084] The third drive unit, located on the vehicle frame (usually below the windshield or near the A-pillar), is connected to the scraper arm 110 and is used to drive the scraper arm 110 to swing back and forth along the surface of the windshield in a wide range to achieve basic coverage cleaning.

[0085] Specifically, the third drive unit can be located in the frame area corresponding to the lower edge of the windshield, and is driven to the root of the wiper arm 110 (the end of the wiper arm 110 away from the wiper strip 120) via a linkage or rocker arm, and is located away from areas directly exposed to rain, which is beneficial for waterproofing and sealing. Alternatively, in vehicles with limited space or those requiring a low wind resistance design, the third drive unit can be embedded inside the A-pillar or front bulkhead structure, and driven to the wiper arm 110 via an extended drive shaft or universal joint.

[0086] While the third drive device drives the wiper arm 110 to move, the drive unit 130 of the wiper 100 achieves adaptive adjustment of local position and attitude.

[0087] The information acquisition unit, located on the vehicle frame, is used to collect real-time information on the distribution of dirt on the surface of the windshield. Typical forms include optical cameras, infrared sensors, image recognition modules, or rain / dirt composite sensors.

[0088] The control processing unit is connected to the drive unit 130 of the wiper 100 and the information acquisition unit respectively. It is used to receive dirt information, analyze the location, type and severity of the dirt area, generate corresponding control commands, and coordinate the third drive device to work together with the drive unit 130 of the wiper 100.

[0089] In the vehicle 200 of the present invention, since the windshield wiper 100 described above is used, during the operation of the vehicle 200, the information acquisition unit continuously or on demand scans the surface of the windshield to obtain images or data of dirt distribution, and transmits the dirt information to the control processing unit. The control processing unit identifies the local area that needs to be cleaned based on a preset algorithm (such as image recognition, threshold judgment or AI model), and determines the required position of the wiper blade 120 (controlled by the first drive mechanism 133) and the wiping angle (controlled by the second drive mechanism).

[0090] Specifically, the third drive unit drives the wiper arm 110 to swing as a whole, so that the wiper 100 enters the vicinity of the target area; at the same time, the control processing unit sends an instruction to the drive unit 130: the first drive mechanism 133 drives the drive seat 131 to extend and retract, so as to accurately position the wiper blade 120 to the dirty area; the second drive mechanism drives the rotating shaft 132 to rotate, adjust the angle of the wiper blade 120 to best fit the curvature of the glass, and the wiper blade 120 performs fixed-point, directional or small-area reciprocating wiping in the target area to complete efficient local cleaning and avoid ineffective work on clean areas.

[0091] In this way, the wiper blade 120 only wipes the actual dirty areas, reducing unnecessary full-width wiping, which helps save vehicle energy and extend the life of the wiper system.

[0092] In some embodiments, the information acquisition unit includes at least one of an infrared sensor, an ultrasonic sensor, and an image sensor.

[0093] Among them, the infrared sensor is used to detect differences in reflectivity or thermal radiation on the surface of the windshield. It can identify changes in infrared characteristics caused by water film, oil stains or attachments, and is suitable for dirt detection in low light or rain and fog environments.

[0094] Ultrasonic sensors measure the time or intensity changes of echoes on the windshield surface by transmitting and receiving ultrasonic signals, thereby determining whether foreign objects (such as mud, frost, or thick dust) are attached. They are highly sensitive to transparent or translucent stains.

[0095] Image sensors (such as visible light cameras or high dynamic range (HDR) cameras) are used to acquire real-time visual images of the windshield. Combined with image processing algorithms, the location, shape, area, and type of dirt (such as rainwater, mud, insect glue, etc.) can be accurately identified.

[0096] In this way, by using multiple sensors in synergy, the information acquisition unit can perform multi-source data fusion, thereby improving the robustness and accuracy of detection.

[0097] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A windshield wiper (100), characterized in that, For cleaning the windshield of a car, the wiper (100) includes: The scraper arm (110) is rotatably mounted on the side of the windshield facing outwards; A wiper blade (120) is disposed between the wiper arm (110) and the windshield; A drive unit (130) is disposed on the scraper arm (110) and connected to the scraper strip (120) so that the scraper strip (120) rotates with the scraper arm (110). The drive unit (130) includes: A drive seat (131) is rotatably connected to a rotating shaft (132) on the side facing the windshield. The rotating shaft (132) extends along the thickness direction of the windshield and is fixedly connected to the wiper bar (120). A first drive mechanism (133) is provided on the scraper arm (110). The first drive mechanism (133) is connected to the drive seat (131) in a transmission manner so that the drive seat (131) can extend and retract along its own length direction. A second driving mechanism is provided on the driving seat (131). The second driving mechanism is connected to the rotating shaft (132) for driving the rotating shaft (132) to rotate.

2. The windshield wiper (100) according to claim 1, characterized in that, The first drive mechanism (133) includes: Mounting base (1331), which is fixedly mounted on the side of the wiper arm (110) facing the windshield, includes mounting plate (1331a) parallel to the outer surface of the windshield. Mounting plate (1331a) has a first mounting arm (1331b) and a second mounting arm (1331d) extending toward the windshield along its thickness direction. A mounting space is defined between the first mounting arm (1331b) and the second mounting arm (1331d). Drive base (131) is retractably disposed within the mounting space. A first driving device (1332) is provided on one of the mounting plate (1331a), the first mounting arm (1331b) and the second mounting arm (1331d). The first driving device (1332) is connected to the driving seat (131) so that the driving seat (131) can move along its own length direction.

3. The windshield wiper (100) according to claim 2, characterized in that, The first drive device (1332) is located on the side of the mounting base (1331) away from the mounting space. The first drive shaft of the first drive device (1332) extends through the mounting base (1331), and a drive gear (1333) is fixedly mounted on the first drive shaft. The drive seat (131) is provided with a rack (1311) extending along its own length direction, and the drive gear (1333) meshes with the rack (1311).

4. The windshield wiper (100) according to claim 3, characterized in that, The rack (1311) has straight sections (1312) at both ends, and the straight sections (1312) protrude at least from the top of the rack (1311).

5. The windshield wiper (100) according to claim 3, characterized in that, One of the mounting base (1331) and the drive base (131) is provided with a guide structure (140), and the other is provided with a mating structure (150), wherein the guide structure (140) and the mating structure (150) are guided and mated.

6. The windshield wiper (100) according to claim 5, characterized in that, The portion of the drive seat (131) facing the windshield is recessed in a direction away from the windshield to form a guide groove (1313). The guide groove (1313) extends along the length of the drive seat (131) and constitutes the guide structure (140). A portion of the structure of the first mounting arm (1331b) is bent toward the mounting plate (1331a) to form a slider (1331c). The slider (1331c) is slidably disposed in the guide groove (1313), and the slider (1331c) constitutes the mating structure (150).

7. The windshield wiper (100) according to claim 6, characterized in that, The first drive device (1332) is disposed on the second mounting arm (1331d) along the thickness direction of the windshield, and the guide groove (1313) is located on the side of the windshield near the meshing position of the drive gear (1333) and the rack (1311).

8. The windshield wiper (100) according to any one of claims 2-6, characterized in that, The rotating shaft (132) has a first end extending along its length toward the drive seat (131) and a second end away from the drive seat (131), the second end being fixedly connected to the scraper (120). The second drive mechanism includes a second drive device, which is fixedly mounted on the drive seat (131) and is connected to the first end via a transmission connection.

9. A vehicle (200), characterized in that, include: A vehicle frame, wherein the vehicle frame is equipped with a windshield; The third drive unit is located on the frame and is connected to the scraper arm (110) in a transmission manner; The windshield wiper (100) as described in any one of claims 1-8; An information collection unit, located on the vehicle frame, is used to collect information about dirt on the windshield; The control processing unit is connected to the drive unit (130) of the windshield wiper (100) and the information acquisition unit, respectively.

10. The vehicle (200) according to claim 9, characterized in that, The information acquisition unit includes at least one of an infrared sensor, an ultrasonic sensor, and an image sensor.

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