Windshield wipers, wiper systems and vehicles

Abstract

This utility model relates to the field of vehicle manufacturing technology, and more particularly to a windshield wiper, a windshield wiper device, and a vehicle. The windshield wiper includes: a wiper arm, which includes a first rod and a second rod; an angle adjuster connected between the first rod and the second rod to adjust the relative rotation angle between the first rod and the second rod; and a drive unit disposed on the first rod for adjusting the attack angle of the first rod. According to this utility model, the windshield wiper, by setting an angle adjuster, achieves adaptive adaptation of the wiper arm to the normal direction of the glass surface at different positions, ensuring that the wiper blade maintains good contact with the glass throughout the wiping process, improving wiping uniformity and sealing, reducing missed wiping or skipping, effectively improving the wiping performance of the windshield wiper, reducing noise, and extending the service life of the windshield wiper.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a windshield wiper, a windshield wiper device, and a vehicle. Background Technology

[0002] In the prior art and related technologies, the windshield wiper system is an essential functional system for maintaining the driver's and passengers' visibility. It mainly consists of wiper arms, linkage mechanisms, and wiper blades. Among them, the wiper arms are one of the core components of the entire wiper system, which determines the performance and lifespan of the wipers. The two most important parameters affecting the performance of the wiper arms are pressure and torsion angle, which affect the contact between the wiper blades and the glass and the wiping effect.

[0003] Car windshields are often not flat but curved glass. During the operation of the wipers, the pressure and angle of attack at each position on the windshield are constantly changing. This requires trade-offs between subjective perceptions such as wiping effect and wiping noise, making it impossible to achieve the ideal state in both aspects. The angle of attack is directly related to the wiper arm torsion angle, which can be controlled by controlling the wiper arm torsion angle. When the car is running at high speed, the airflow will push the wiper arm and wiper blade, causing the wiper arm to lift along the normal direction of the glass. Therefore, it is necessary to design sufficient pressure to prevent the wipers from drifting during operation and causing missed wipes. However, the greater the wiper arm pressure, the louder the sound produced during the operation of the wipers. It is impossible to achieve both simultaneously. Utility Model Content

[0004] Therefore, this utility model provides a windshield wiper that enables the wiper arm to adapt to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass throughout the wiping process.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0006] In a first aspect, this utility model provides a windshield wiper, comprising: a wiper arm, the wiper arm including a first rod and a second rod; an angle adjuster connected between the first rod and the second rod to adjust the relative rotation angle between the first rod and the second rod; and a drive unit disposed on the first rod for adjusting the attack angle of the first rod.

[0007] According to this utility model, the wiper arm adapts to the normal direction of the glass surface when it is in different positions by setting an angle adjuster. This ensures that the wiper blade maintains good contact with the glass throughout the wiping process, improves wiping uniformity and sealing, reduces missed wiping or skipping, effectively improves the wiping performance of the wiper, reduces noise, and extends the service life of the wiper.

[0008] In one possible implementation of this utility model, a pressure sensor is provided on the second rod for detecting the pressure of the wiper arm.

[0009] Thus, by setting a pressure sensor on the second rod to monitor the normal pressure applied by the wiper arm to the glass surface in real time, the pressure applied by the wiper arm to the glass will fluctuate dynamically during the operation of the wiper due to factors such as changes in glass curvature, airflow disturbance, and inertia of the drive mechanism. Setting a pressure sensor can adjust the pressure according to the actual contact state, avoiding overpressure or underpressure caused by fixed pressure under different conditions. This can effectively control the friction between the wiper blade and the glass, reduce operating noise, and improve NVH performance.

[0010] In one possible implementation of this utility model, the wiper arm further includes an extension rod, which is connected to the first rod, and at least a portion of the first rod is located inside the extension rod.

[0011] In this way, by setting an extension rod connected to the first rod, the effective length of the wiper arm is extended to adapt to windshields of different sizes and curvatures, optimize the movement trajectory of the wiper blades, improve the wiping coverage, and enhance the adaptability and structural flexibility of the wipers.

[0012] In one possible implementation of this utility model, the drive unit includes a first motor mounted on the extension rod, and the wiper further includes a spring, one end of which is connected to a first end of the first rod, and the other end of which is connected to the first motor.

[0013] Thus, the first motor is connected between the spring and the first rod to adjust the relative position of the first rod and the extension rod, thereby adjusting the wiper's attack angle to adapt to windshields of different sizes and curvatures. The spring absorbs mechanical shocks and improves the smoothness of the wiping process. The spring deformation can also reflect the actual pressure acting on the wiper blade. Furthermore, by controlling the spring preload or stiffness, the contact pressure between the wiper blade and the glass can be dynamically adjusted.

[0014] In one possible implementation of this utility model, the angle adjuster includes: a first adjusting part, a second adjusting part, and a second motor. The first adjusting part is connected to the first rod, the second adjusting part is connected to the second rod, and the second motor is disposed between the first adjusting part and the second adjusting part to drive the first adjusting part and the second adjusting part to rotate relative to each other.

[0015] Thus, the first adjustment part is connected to the first rod, the second adjustment part is connected to the second rod, and the second motor drives the first and second adjustment parts to form a rotatable joint structure. The second motor drives the first and second adjustment parts to rotate relative to each other, thereby adjusting the angle between the tangent direction of the wiper blade and the glass contact point and the direction of movement, reducing the angle of attack and reducing friction noise when driving at high speed.

[0016] In one possible implementation of this utility model, the wiper arm further includes a rod head, which is located at the end of the extension rod away from the second rod, and the wiper further includes a wiper blade, which is detachably connected to the wiper arm.

[0017] Thus, a rotating part is formed on the wiper head, which is connected to the wiper motor for transmission. This allows the wiper arm to rotate around the central axis of the rotating part, realizing the wiping action of the wiper arm and improving the flexibility of the wiper arm. Furthermore, the wiper blade and wiper arm are detachably connected, making it easy to replace the wiper blade and thus effectively ensuring the wiping effect.

[0018] Secondly, this utility model provides a windshield wiper device, which includes at least two windshield wipers provided in any of the embodiments of the first aspect above.

[0019] The wiper device provided in this embodiment of the present invention, since it includes the wiper provided in any of the embodiments of the first aspect above, has the same technical effect. That is, by setting an angle adjuster, the wiper arm can adapt to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass during the entire wiping process, improving wiping uniformity and sealing, reducing missed wiping or skipping phenomena, effectively improving the wiping performance of the wiper, reducing noise, and extending the service life of the wiper.

[0020] Thirdly, this utility model provides a vehicle that includes the windshield wiper provided in any of the embodiments of the first aspect above.

[0021] The vehicle provided in this utility model embodiment includes the windshield wiper provided in any of the embodiments of the first aspect above, and therefore has the same technical effect. That is, by setting an angle adjuster, the wiper arm can adapt to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass during the entire wiping process, improving wiping uniformity and sealing, reducing missed wiping or skipping phenomena, effectively improving the wiping performance of the windshield wiper, reducing noise, and extending the service life of the windshield wiper.

[0022] In one possible implementation of this utility model, the vehicle further includes an electrical control system, which includes a control module connected to both the first motor and the second motor of the windshield wiper, and is used to receive instructions to control the operating state of the first motor and the second motor, the operating state including operating speed and operating direction.

[0023] This allows for precise adjustment of the wiper's swing direction and speed, improving control flexibility and thus enhancing the vehicle's intelligence.

[0024] In one possible implementation of this utility model, the vehicle further includes a vehicle speed sensor, which is used to detect the speed of the vehicle and is electrically connected to the control module.

[0025] In this way, by electrically connecting the vehicle speed sensor to the control module, the vehicle speed signal is transmitted to the control module, which can automatically adjust the wiper frequency according to the vehicle speed, and adjust the wiping pressure or angle related to the vehicle speed to cope with changes in airflow and achieve the best wiping effect in different weather conditions. Attached Figure Description

[0026] Figure 1 A schematic diagram of a windshield wiper provided in an embodiment of this utility model;

[0027] Figure 2 for Figure 1 An enlarged schematic diagram of the angle adjuster shown;

[0028] Figure 3 for Figure 1 The diagram shows a partially enlarged view of the windshield wipers.

[0029] Figure label:

[0030] 100. Windshield wiper; 1. Wiper arm; 11. First lever; 12. Second lever; 13. Extension lever; 14. Lever head; 141. Rotating part; 2. Angle adjuster; 21. First adjustment part; 22. Second adjustment part; 23. Second motor; 3. First motor; 4. Spring; 5. Pressure sensor. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] Furthermore, in this embodiment of the invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0034] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0035] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0036] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0037] In related technologies, the windshield wiper system is an essential functional system for maintaining the driver's and passengers' visibility. It mainly consists of wiper arms, linkage mechanisms, and wiper blades. Among them, the wiper arms are one of the core components of the entire wiper system, which determines the performance and lifespan of the wipers. The two most important parameters affecting the performance of the wiper arms are pressure and torsion angle, which affect the contact between the wiper blades and the glass and the wiping effect.

[0038] Car windshields are often not flat but curved glass. During the operation of the wipers, the pressure and angle of attack at each position on the windshield are constantly changing. This requires trade-offs between subjective perceptions such as wiping effect and wiping noise, making it impossible to achieve the ideal state in both aspects. The angle of attack is directly related to the wiper arm torsion angle, which can be controlled by controlling the wiper arm torsion angle. When the car is running at high speed, the airflow will push the wiper arm and wiper blade, causing the wiper arm to lift along the normal direction of the glass. Therefore, it is necessary to design sufficient pressure to prevent the wipers from drifting during operation and causing missed wipes. However, the greater the wiper arm pressure, the louder the sound produced during the operation of the wipers. It is impossible to achieve both simultaneously.

[0039] In view of this, the present invention provides a windshield wiper that enables the wiper arm to adapt to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass throughout the wiping process.

[0040] It should be noted that the vehicles or automobiles mentioned in this utility model can refer to large automobiles, small automobiles, special-purpose vehicles, etc. For example, according to the vehicle type, the vehicles or automobiles in this utility model can be sedans, off-road vehicles, multi-purpose vehicles (MPVs), or other types of vehicles.

[0041] The following is for reference. Figures 1-3 A windshield wiper 100 according to an embodiment of the present utility model is described, including: a wiper arm 1, an angle adjuster 2, and a drive unit.

[0042] Specifically, the wiper arm 1 includes a first rod 11 and a second rod 12. An angle adjuster 2 is connected between the first rod 11 and the second rod 12 to adjust the relative rotation angle between them. A drive unit is mounted on the first rod 11 to adjust its angle of attack. Thus, by setting the angle adjuster 2, the wiper arm 1 achieves adaptive adaptation to the normal direction of the glass surface at different positions, ensuring that the wiper blade maintains good contact with the glass throughout the wiping process. This improves wiping uniformity and sealing, reduces missed wiping or skipping, effectively enhances the wiping performance of the wiper 100, reduces noise, and extends the service life of the wiper 100.

[0043] Understandably, the wiper arm 1 is used to transmit power and keep the wiper blade in contact with the glass. The wiper arm 1 includes a first rod 11 and a second rod 12. The first rod 11 is connected to the wiper motor, which drives the wiper arm 1 to swing and wipe. The second rod 12 is connected to the first rod 11 through an angle adjuster 2 to adapt to changes in the curvature of the glass surface. The angle adjuster 2 is used to adjust the relative angle between the first rod 11 and the second rod 12, so as to achieve the self-adaptation of the wiper arm 1 to the normal direction of the glass surface at different positions. The drive unit provides power for adjusting the attack angle of the first rod 11 and is also used to control the initial attack angle of the wiper arm 1 so that it can adapt to different wind speeds, glass shapes and wiping needs.

[0044] Reference Figures 1-3 As shown, the windshield wiper 100 includes: a wiper arm 1, an angle adjuster 2, and a drive unit. The wiper arm 1 includes a first rod 11 and a second rod 12. The angle adjuster 2 is connected between the first rod 11 and the second rod 12 to adjust the relative angle between the first rod 11 and the second rod 12. The drive unit is drivenly connected to the first rod 11 to adjust the attack angle of the first rod 11.

[0045] According to the embodiment of the present utility model, the wiper 100 achieves adaptive adaptation of the wiper arm 1 to the normal direction of the glass surface at different positions by setting the angle adjuster 2, ensuring that the wiper blade always maintains good contact with the glass during the entire wiping process, improving wiping uniformity and sealing, reducing missed wiping or skipping phenomena, effectively improving the wiping performance of the wiper 100, reducing noise, and extending the service life of the wiper 100.

[0046] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, a pressure sensor 5 is installed on the second rod 12 to detect the pressure of the wiper arm 1. Therefore, by installing the pressure sensor 5 on the second rod 12, the normal pressure applied by the wiper arm 1 to the glass surface can be monitored in real time. During wiper operation, the pressure applied by the wiper arm 1 to the glass will dynamically fluctuate due to factors such as changes in glass curvature, airflow disturbance, and the inertia of the drive mechanism. The pressure sensor 5 can adjust the pressure according to the actual contact state, avoiding overpressure or underpressure caused by fixed pressure under different conditions. This effectively controls the friction between the wiper blade and the glass, reduces operating noise, and improves NVH performance.

[0047] In some embodiments of this utility model, such as Figure 1As shown, the wiper arm 1 also includes an extension rod 13, which is connected to the first rod 11, with at least a portion of the first rod 11 located inside the extension rod 13. It is understood that by providing the extension rod 13 connected to the first rod 11, the effective length of the wiper arm 1 is extended to accommodate windshields of different sizes and curvatures, optimizing the wiper blade's movement trajectory, improving wiping coverage, and enhancing the adaptability and structural flexibility of the wiper 100.

[0048] In some embodiments of this utility model, the drive unit includes a first motor 3, which is mounted on the extension rod 13. The wiper 100 also includes a spring 4, one end of which is connected to the first end of the first rod 11, and the other end of which is connected to the first motor 3. It is understood that the first motor 3 is connected between the spring 4 and the first rod 11 to adjust the relative position of the first rod 11 and the extension rod 13, thereby adjusting the attack angle of the wiper 100 to adapt to windshields of different sizes and curvatures. The spring 4 absorbs mechanical impact, improving the smoothness of the wiping process. The deformation of the spring 4 can also reflect the actual pressure acting on the wiper blade. Furthermore, by controlling the preload or stiffness of the spring 4, the contact pressure between the wiper blade and the glass can be dynamically adjusted.

[0049] In some embodiments of this utility model, the angle adjuster 2 includes: a first adjusting part 21, a second adjusting part 22, and a second motor 23. The first adjusting part 21 is connected to a first rod 11, and the second adjusting part 22 is connected to a second rod 12. The second motor 23 is disposed between the first adjusting part 21 and the second adjusting part 22 to drive the first adjusting part 21 and the second adjusting part 22 to rotate relative to each other. It can be understood that the first adjusting part 21 is connected to the first rod 11, and the second adjusting part 22 is connected to the second rod 12. The second motor 23 drives the first adjusting part 21 and the second adjusting part 22 to rotate relative to each other, thereby adjusting the angle between the tangent direction of the wiper blade contact point with the glass and the direction of movement, reducing the angle of attack and friction noise during high-speed driving.

[0050] In some embodiments of this utility model, such as Figure 1 As shown, the wiper arm 1 also includes a rod head 14, which is located at the end of the extension rod 13 away from the second rod 12. The wiper 100 also includes a wiper blade, which is detachably connected to the wiper arm 1. It is understood that a rotating part 141 is formed on the rod head 14, and the rotating part 141 is connected to the wiper motor, allowing the wiper arm 1 to rotate around the central axis of the rotating part 141, thus realizing the wiping action of the wiper arm 1. This improves the flexibility of the wiper arm 1. Furthermore, the detachable connection between the wiper blade and the wiper arm 1 facilitates the replacement of the wiper blade, thereby effectively ensuring the wiping effect.

[0051] Secondly, the present invention provides a windshield wiper device, comprising at least two windshield wipers 100 provided in any of the embodiments of the first aspect above.

[0052] The wiper device provided in this embodiment of the present invention, since it includes the wiper 100 provided in any of the embodiments of the first aspect above, has the same technical effect. That is, by setting the angle adjuster 2, the wiper arm 1 is made adaptive to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass during the entire wiping process, improving the wiping uniformity and sealing, reducing missed wiping or skipping phenomena, effectively improving the wiping performance of the wiper 100, reducing noise, and extending the service life of the wiper 100.

[0053] Thirdly, this utility model provides a vehicle including the windshield wiper 100 provided in any of the embodiments of the first aspect above.

[0054] The vehicle provided in this embodiment of the utility model, since it includes the windshield wiper 100 provided in any of the embodiments of the first aspect above, has the same technical effect, that is, by setting the angle adjuster 2, the wiper arm 1 is made adaptive to the normal direction of the glass surface at different positions, ensuring that the wiper blade always maintains good contact with the glass during the entire wiping process, improving the wiping uniformity and sealing, reducing the phenomenon of missed wiping or skipping wiping, effectively improving the wiping performance of the windshield wiper 100, reducing noise, and extending the service life of the windshield wiper 100.

[0055] In some embodiments of this utility model, the vehicle further includes an electrical control system, which includes a control module connected to both the first motor 3 and the second motor 23 of the windshield wiper 100. The control module receives commands to control the operating state of the first motor 3 and the second motor 23, including operating speed and operating direction. This enables precise adjustment of the oscillation direction and speed of the windshield wiper 100, improving control flexibility and thus enhancing the vehicle's intelligence.

[0056] In some embodiments of this utility model, the vehicle further includes a vehicle speed sensor, which is used to detect the vehicle's speed and is electrically connected to the control module. It is understood that during high-speed operation, the airflow exerts a thrust on the wiper arm 1 and the wiper blade, causing the wiper arm to lift along the normal direction of the glass. By connecting the vehicle speed sensor to the control module and transmitting the vehicle speed signal, the control module can automatically adjust the wiper frequency and adjust the speed-related wiping pressure or angle according to the vehicle speed to cope with airflow changes and achieve the best wiping effect in different weather conditions.

[0057] The following reference Figures 1-3 A windshield wiper 100 according to a specific embodiment of the present invention will be described.

[0058] Specifically, the wiper 100 includes: a wiper arm 1, an angle adjuster 2, a drive unit, and a spring 4. The wiper arm 1 includes a first rod 11, a second rod 12, an extension rod 13, and a rod head 14. The angle adjuster 2 is connected between the first rod 11 and the second rod 12 to adjust the relative angle between the first rod 11 and the second rod 12. The drive unit is drivenly connected to the first rod 11 to adjust the attack angle of the first rod 11. A pressure sensor 5 is provided on the second rod 12. The extension rod 13 is connected to the first rod 11, with at least a portion of the first rod 11 located inside the extension rod 13. The rod head 14 is located at the end of the extension rod 13 away from the second rod 12. A first motor 3 is provided on the extension rod 13. One end of the spring 4 is connected to the first end of the first rod 11, and the other end of the spring 4 is connected to the first motor 3. The angle adjuster 2 includes a first adjusting part 21, a second adjusting part 22, and a second motor 23. The first adjusting part 21 is connected to the first rod 11, the second adjusting part 22 is connected to the second rod 12, and the second motor 23 is located between the first adjusting part 21 and the second adjusting part 22.

[0059] The sequence numbers of the above-mentioned embodiments of this utility model are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wiper, characterized in that, include: Wiper arm (1), the wiper arm (1) includes a first rod (11) and a second rod (12); An angle adjuster (2) is connected between the first rod (11) and the second rod (12) to adjust the relative rotation angle between the first rod (11) and the second rod (12); A drive unit is provided on the first rod (11) and is used to adjust the attack angle of the first rod (11).

2. The rain-repellent composition according to claim 1, wherein The second rod (12) is equipped with a pressure sensor (5) for detecting the pressure of the wiper arm (1).

3. The rain-repellent composition according to claim 2, wherein The wiper arm (1) further includes an extension rod (13), which is connected to the first rod (11), and at least a portion of the first rod (11) is located inside the extension rod (13).

4. The rain-repellent device according to claim 3, wherein The drive unit includes a first motor (3) mounted on the extension rod (13). The wiper (100) also includes a spring (4), one end of which is connected to the first end of the first rod (11), and the other end of which is connected to the first motor (3).

5. The rain wiper according to any one of claims 1-4, characterized in that, The angle adjuster (2) includes: a first adjusting part (21), a second adjusting part (22), and a second motor (23). The first adjusting part (21) is connected to the first rod (11), the second adjusting part (22) is connected to the second rod (12), and the second motor (23) is located between the first adjusting part (21) and the second adjusting part (22) to drive the first adjusting part (21) and the second adjusting part (22) to rotate relative to each other.

6. The rain-repellent composition according to claim 3, wherein The wiper arm (1) also includes a rod head (14), which is located at the end of the extension rod (13) away from the second rod (12). The wiper (100) also includes a wiper blade, which is detachably connected to the wiper arm (1).

7. A wiper device, characterized in that Includes at least two windshield wipers (100) according to any one of claims 1-5.

8. A vehicle characterized by comprising: The wiper (100) includes any one of claims 1-5.

9. The vehicle of claim 8, wherein Also includes: An electrical control system, comprising: a control module, the control module being connected to both the first motor (3) and the second motor (23) of the windshield wiper (100), for receiving instructions to control the operating state of the first motor (3) and the second motor (23), the operating state including operating speed and operating direction.

10. The vehicle according to claim 9, characterized in that, Also includes: A vehicle speed sensor is used to detect the speed of the vehicle, and the vehicle speed sensor is electrically connected to the control module.

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