Wiper device for vehicle

Abstract

The utility model discloses a windscreen wiper device for a vehicle. The windscreen wiper device comprises a wiper arm assembly and a driving assembly for driving the wiper arm assembly to swing. The wiper arm assembly comprises a swing arm part, a transmission part and a wiper part, and the swing arm part is in transmission connection with the power output end of the driving assembly; the transmission part comprises a first transmission part and a second transmission part which are arranged at the two ends of the swing arm part, the power input end of the first transmission part is in transmission connection with the driving assembly through the swing arm part, and the power input end of the second transmission part is in transmission connection with the power output end of the first transmission part through the swing arm part. The windscreen wiper part is in transmission connection with the power output end of the second transmission part. When the device works, on one hand, the device has the advantages of being convenient to use, reducing the view blind area of a driver and improving the safety of an automobile when the automobile runs in rainy and snowy days; and on the other hand, the attractiveness of the automobile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a windshield wiper device for vehicles. Background Art

[0002] A windshield wiper is a device used to scrape raindrops and dust adhering to the vehicle windshield, preventing rainwater and other dirt from affecting the driver's line of sight, and is an important safety accessory to enhance driving safety. The scraping area is one of the important technical indicators to be considered in the design of automotive windshield wipers. The larger the scraping area, the wider the driver's field of vision and the higher the driving safety of the vehicle.

[0003] The scraping area refers to the area that the wiper blade can scrape within a specific range on the outer surface of the windshield. Usually, when a vehicle is driving in rainy or snowy weather, the size of the field of vision determines the driving safety of the vehicle, and the scraping area can affect the driver's line of sight to a certain extent. Currently, most vehicle windshield wipers are of a fixed type, with a fixed scraping stroke. At the same time, the scraping working surface is mostly a fan-shaped area, and there are scraping blind spots during use, which affect the driver's field of vision and are inconvenient to use, thereby reducing the safety performance of the vehicle when driving in rainy or snowy weather and not meeting the safety development trend of automobiles.

[0004] For example, Chinese Utility Model Patent CN210258349U discloses an automotive windshield wiper device and an automobile. The automotive windshield wiper device includes a strip-shaped support member, the support member includes a support cross bar, a first rotating shaft sleeve and a second rotating shaft sleeve fixedly arranged at opposite ends of the support cross bar. A driving component is fixedly arranged on the support cross bar, and the driving component at least includes an automatic reset device. A driving rotating shaft is arranged on the automatic reset device, one end of the driving rotating shaft is movably connected to the main transmission connecting rod, one end of the first long driving rod is movably connected to one end of the first short driving rod, and one end of the second long driving rod is movably connected to one end of the second short driving rod. A first scraping component is fixedly arranged at the top end of the first rotating shaft, and a second scraping component is fixedly arranged at the top end of the second rotating shaft. When this automotive windshield wiper device is in use, the structure is relatively stable and has a long service life. However, when scraping the windshield in rainy or snowy weather with this windshield wiper device, due to the fixed scraping stroke of the windshield wiper, only the area within the scraping stroke can be scraped, and some blind spots on the windshield cannot be scraped, which affects the driver's field of vision and is inconvenient to use, reducing the safety performance of the vehicle when driving in rainy or snowy weather.

[0005] Therefore, the windshield wipers in the prior art have the problems that the scraping stroke of the windshield wiper is fixed, there are scraping blind spots during use, resulting in inconvenient use and reducing the safety performance of the vehicle when driving in rainy or snowy weather. Summary of the Utility Model

[0006] The utility model aims to solve the problem that the wiper in the prior art has a fixed wiper stroke and a wiper blind area when in use, which makes the use inconvenient and reduces the safety performance of the car when driving in rainy and snowy weather.

[0007] To solve the above problems, the utility model provides a vehicle wiper device, including a wiper arm assembly and a driving assembly for driving the wiper arm assembly to swing; the wiper arm assembly includes a swing arm component, a transmission component and a wiper component, and the swing arm component is transmission-connected to the power output end of the driving assembly.

[0008] Furthermore, the transmission component includes a first transmission part and a second transmission part arranged at both ends of the swing arm component, the power input end of the first transmission part is connected to the drive assembly through the swing arm component, the power input end of the second transmission part is connected to the power output end of the first transmission part through the swing arm component, and the wiper component is connected to the power output end of the second transmission part.

[0009] Further, the second transmission part includes a first linkage mechanism and a second linkage mechanism, wherein the first linkage mechanism includes a first component arranged at one end of the swing arm component, and a second component adapted to the first component and rotated with the swing of the swing arm; the second linkage mechanism includes a third component that rotates synchronously with the second component, and a fourth component adapted to the third component and connected to the end of the wiper component; wherein the transmission ratios of the first linkage mechanism and the second linkage mechanism are different, and the transmission ratio of the second linkage mechanism is greater than the transmission ratio of the first linkage mechanism. The driving assembly drives the swing arm component to swing, and synchronously links the first transmission part and the second transmission part to drive the wiper component to move relative to the swing arm component along the extension direction of the swing arm component.

[0010] By adopting the above technical scheme, when the vehicle is driving in rainy and snowy weather and using the vehicle wiper device, the driving assembly drives the swing arm component to swing, and the power of the synchronously linked first transmission part is transmitted to the first component through the swing arm component, while the first component drives the second component to rotate and synchronously links the third component to rotate. At the same time, the third component drives the fourth component to link the wiper component to move relative to the swing arm component along the extension direction of the swing arm component, thereby achieving the purpose of changing the position of the wiper component, making it extend along the extension direction of the swing arm component, so that the wiper component is extended, the wiping stroke of the wiper component is increased, thereby reducing the driver's blind spot and improving the safety performance of the car when driving in rainy and snowy weather.

[0011] Furthermore, since the drive assembly drives the swing arm component to swing, the wiper component can be extended along the extension direction of the swing arm component at the same time, thereby reducing the driver's blind spot. Therefore, the vehicle wiper device also has the advantage of being easy to use.

[0012] Furthermore, since the transmission ratio of the second linkage mechanism is greater than that of the first linkage mechanism, the driving stroke of the first linkage mechanism can be amplified by the second linkage mechanism; thus, the extending stroke of the wiper component along the swing arm component is greater than the driving stroke of the driving component. Therefore, through this setting method, when designing the vehicle wiper device, its overall size can be appropriately reduced, so that when the vehicle wiper device is installed on the automotive windshield, the occupied area at the automotive windshield is reduced, and the aesthetics of the vehicle is improved.

[0013] In summary, this vehicle wiper device has the advantages of being convenient to use and reducing the driver's vision blind area, thereby improving the safety of the vehicle when driving in rainy and snowy weather on the one hand; on the other hand, it also has the advantage of improving the aesthetics of the vehicle.

[0014] According to the vehicle wiper device provided by the embodiment of the present invention, the driving component includes a swing housing extending along the extending direction of the swing arm component, and a driving component that is in transmission connection with the swing housing and is used to drive the swing housing to swing; wherein, at least part of the swing arm component is fixedly arranged on one side surface of the swing housing, the first transmission part includes a guiding member arranged in the swing housing and corresponding to the other end of the swing arm component, and a roller movably arranged at the other end of the swing arm component and abutting against the outer periphery of the guiding member.

[0015] Furthermore, the driving component drives the swing housing to swing, and synchronously drives the roller to slide along the outer periphery of the guiding member, and synchronously drives the second transmission part to drive the wiper component to move relative to the swing arm component along the extending direction of the swing arm component.

[0016] Adopting the above technical solution, when the driving component drives the swing housing to swing, the swing housing drives the swing arm component to swing. At the same time, the swing arm component drives the roller to slide along the outer periphery of the guiding member and synchronously drives the second transmission part to drive the wiper component to move relative to the swing arm component along the extending direction of the swing arm component; through this movement mode, it can be known that the working mode of the wiper component during operation is that during the process of rotating with the swing housing, it will also move along the extending direction of the swing arm component to increase the scraping area, improving the practicability of the vehicle wiper device.

[0017] Furthermore, by arranging the swing housing, on the one hand, it can also protect the swing arm component and the first transmission part arranged in the swing housing; on the other hand, by arranging the swing housing to shield the swing arm component and the first transmission part, the aesthetics of the vehicle wiper device is improved.

[0018] According to the vehicle wiper device provided by the embodiment of the present utility model, the first component is set as a first rack formed at one end of the swing arm component, the second component is a first gear adapted to mesh with the first rack; the third component is a second gear coaxially rotating with the first gear, and the fourth component is a second rack formed at one end of the wiper component.

[0019] Furthermore, the first gear and the second gear are rotatably sleeved on the same mounting shaft, the mounting shaft is fixedly installed on the inner wall surface of the swing housing, the first rack meshes with the first gear, and the second gear meshes with the second rack.

[0020] With the above technical solution, when the driving component drives the swing housing to swing and the swing arm component drives the roller to slide along the outer circumference of the guiding member, the first rack moves along the extending direction of the swing arm component, so that the first gear rotates around the mounting shaft, and at the same time drives the second gear to rotate. At the same time, the second gear synchronously drives the second rack to drive the wiper component to move along the extending direction of the swing arm component. Through the transmission mode of the gear and rack, the transmission efficiency is improved, and the power input to the first rack can be effectively transmitted to the second rack to achieve efficient power transmission. And because the meshing between the gear and the rack has less sliding, the loss of power transmission can be reduced.

[0021] According to the vehicle wiper device provided by the embodiment of the present utility model, the driving component includes a driving motor, a rotating shaft and a mounting bracket. The mounting bracket is fixedly installed at the vehicle windshield, the driving motor is installed on the mounting bracket, the rotating shaft is fixedly connected to one end of the swing housing and extends along the thickness direction of the swing housing, and the driving end of the driving motor is in transmission connection with the rotating shaft; and, the driving motor drives the rotating shaft to rotate forward or reverse around its axis and synchronously drives the swing housing to swing around the axis of the rotating shaft.

[0022] With the above technical solution, when the vehicle wiper device works, since the wiper component has a limited rotation angle (generally 90° - 110°) when scraping the vehicle windshield, the wiper component always reciprocates within a limited rotation angle range. Therefore, the driving motor is set to drive the rotating shaft to rotate forward or reverse around its axis and synchronously drive the swing housing to swing around the axis of the rotating shaft, so as to limit the swing angle of the swing housing and avoid interfering with other structural components installed at the vehicle windshield, ensuring the reliability of the vehicle wiper device during operation.

[0023] According to the vehicle wiper device provided by the embodiment of the present utility model, the guiding member is set as a cam, the cam is annularly arranged around the rotating shaft and is rotatably connected to the rotating shaft, and the cam is fixedly connected to the mounting bracket.

[0024] With the above technical solution, by setting the guiding member as a cam, when the vehicle windshield wiper device works, when the driving component drives the swinging housing to swing reciprocally, the swing arm component drives the roller to slide along the outer periphery of the cam. When the roller slides gradually from the low and flat part to the convex part on the outer periphery of the cam, the swing arm component moves along its extending direction and synchronously drives the windshield wiper component to extend, increasing the wiping area of the windshield wiper component on the automotive windshield; when the roller slides gradually from the convex part to the low and flat part on the outer periphery of the cam, the swing arm component retracts along its extending direction and synchronously drives the windshield wiper component to retract; through this working mode, it can be ensured that when the driving component drives the swinging housing to swing reciprocally to drive the windshield wiper component to swing, as the windshield wiper component wipes the automotive windshield, since the wiping area is fan-shaped, therefore, the windshield wiper component first extends to wipe the dead corner position on the windshield, and then gradually retracts to avoid hitting the vehicle body position on the side of the windshield, thereby improving the working reliability and practicability of the vehicle windshield wiper device.

[0025] For the vehicle windshield wiper device provided by the embodiment of the present invention, the first transmission part further includes an elastic member, the elastic member is looped around the periphery of the swing arm component and extends along the extending direction of the swing arm component, one end is power-connected to the roller and the other end is fixedly connected to the inner peripheral wall of the swinging housing to push the roller against the outer surface of the cam.

[0026] With the above technical solution, by setting the elastic member, during the use of the vehicle windshield wiper device, when the driving component drives the swinging housing to swing, the swing arm component drives the roller to slide along the outer periphery of the cam. When the roller slides gradually from the low and flat part to the convex part on the outer periphery of the cam, the swing arm component moves along its extending direction and synchronously drives the windshield wiper component to extend, and the elastic member is compressed and stores its own resilience. When the roller slides gradually from the convex part to the low and flat part on the outer periphery of the cam, the swing arm component retracts along its extending direction and synchronously drives the windshield wiper component to retract. The resilience of the elastic member can ensure that the roller can always fit and slide along the outer periphery of the cam; thus ensuring the reliability of the cooperation between the swing arm component and the cam, and avoiding the risk that the roller disengages from the outer periphery of the cam when the roller slides gradually from the convex part to the low and flat part on the outer periphery of the cam.

[0027] For the vehicle windshield wiper device provided by the embodiment of the present invention, the wiper arm assembly further includes an intermediate telescopic part, the intermediate telescopic part includes a plurality of movable telescopic rods arranged in sequence along the extending direction of the swing arm component; wherein, the movable telescopic rod closest to the swing arm component is transmission-connected to the swing arm component through a second transmission part, and between two adjacent movable telescopic rods, and between the farthest movable telescopic rod and the windshield wiper component are all transmission-connected through a third transmission part, wherein, the third transmission part has the same structure as the second transmission part.

[0028] By adopting the above technical solution, an intermediate telescopic component is set, and the intermediate telescopic component includes multiple movable telescopic rods, so that the driving stroke of the first transmission part is gradually amplified via the second transmission part and the third transmission part, thereby making the extension stroke of the wiper component along the swing arm component longer, thereby adapting to more vehicle models, such as large trucks, trucks and other vehicles with larger windshield areas.

[0029] According to the vehicle wiper device provided by the embodiment of the utility model, the wiper component includes a wiper brush and a wiper bracket. The wiper brush is fixedly installed on one side of the wiper bracket, and the other end of the wiper bracket is transmission-connected to the end of the adjacent middle telescopic component.

[0030] By adopting the above technical solution, since the wiper blade is generally soft, a wiper bracket is provided to support it, so that the wiper component can better fit the windshield of the car when working, and clean the windshield of the car.

[0031] According to the vehicle wiper device provided by the embodiment of the utility model, the swing arm component is arranged on the inner surface of the swing housing through a plurality of limiting components, the plurality of limiting components are all located inside the swing housing and are arranged at intervals along the extension direction of the swing arm component, and the plurality of limiting components are arranged around the outer periphery of the swing arm component and fixedly connected to the inner wall surface of the swing housing.

[0032] By adopting the above technical solution, a plurality of limiting components are provided to limit the swing arm component, thereby preventing the swing arm component from shaking and causing abnormal noise during the swing of the swing housing.

[0033] According to the vehicle wiper device provided in the embodiment of the utility model, the driving component also includes a driving connecting rod mechanism, one end of the driving connecting rod mechanism is transmission-connected to the power output end of the driving motor, and the other end is fixedly connected to the rotating shaft; wherein the driving motor drives the driving connecting rod mechanism and the linked rotating shaft to rotate forward or reverse around its axis.

[0034] By adopting the above technical solution, a driving connecting rod mechanism is set up. When the driving component is working, the driving motor drives the driving connecting rod mechanism and the linked rotating shaft to rotate forward or reverse around its axis, thereby better transmitting the power of the driving motor. Compared with the driving motor directly driving the rotating shaft to rotate, a driving connection mechanism is set up to transmit the power of the driving motor. It can be seen from the lever principle that the power of the driving motor can be reduced and the life of the driving motor can be extended.

[0035] The beneficial effects of the utility model are:

[0036] The utility model discloses a vehicle windshield wiper device, comprising a wiper arm assembly and a driving assembly for driving the wiper arm assembly to swing; the wiper arm assembly comprises a swing arm component, a transmission component and a wiper component, and the swing arm component is transmission-connected to the power output end of the driving assembly. The transmission component comprises a first transmission part and a second transmission part arranged at both ends of the swing arm component, the power input end of the first transmission part is transmission-connected to the driving assembly through the swing arm component, the power input end of the second transmission part is transmission-connected to the power output end of the first transmission part through the swing arm component, and the wiper component is transmission-connected to the power output end of the second transmission part.

[0037] The second transmission part includes a first linkage mechanism and a second linkage mechanism, wherein the first linkage mechanism includes a first component arranged at one end of the swing arm component, and a second component adapted to the first component and rotated with the swing of the swing arm; the second linkage mechanism includes a third component that rotates synchronously with the second component, and a fourth component adapted to the third component and connected to the end of the wiper component; wherein the transmission ratios of the first linkage mechanism and the second linkage mechanism are different, and the transmission ratio of the second linkage mechanism is greater than that of the first linkage mechanism. The driving assembly drives the swing arm component to swing, and synchronously links the first transmission part and the second transmission part to drive the wiper component to move relative to the swing arm component along the extension direction of the swing arm component.

[0038] When the vehicle is driving in rainy or snowy weather and the vehicle wiper device is used, the driving assembly drives the swing arm component to swing, and the power of the synchronously linked first transmission part is transmitted to the first component through the swing arm component. At the same time, the first component drives the second component to rotate and synchronously links the third component to rotate. At the same time, the third component drives the fourth component to link the wiper component to move relative to the swing arm component along the extension direction of the swing arm component, thereby achieving the purpose of changing the position of the wiper component, making it extend along the extension direction of the swing arm component, so that the wiper component is extended, the wiping stroke of the wiper component is increased, thereby reducing the driver's blind spot and improving the safety performance of the car when driving in rainy and snowy weather.

[0039] Since the wiper component can be simultaneously extended along the extension direction of the swing arm component by driving the swing arm component through the driving assembly, the blind spot of the driver's field of vision is reduced. Therefore, the vehicle wiper device also has the advantage of being easy to use.

[0040] Since the transmission ratio of the second linkage mechanism is greater than that of the first linkage mechanism, the driving stroke of the first linkage mechanism can be amplified by the second linkage mechanism; thus, the extension stroke of the wiper component along the swing arm component is greater than the driving stroke of the driving assembly. Therefore, through this arrangement, when designing the vehicle wiper device, its overall size can be appropriately reduced, so that when the vehicle wiper device is installed on the windshield of the car, the occupied area of the car windshield is reduced, and the aesthetics of the car is improved.

[0041] In summary, on the one hand, this vehicle wiper device has the advantages of convenient use, reducing the driver's field of vision blind area, thereby improving the safety of the vehicle when driving in rainy and snowy weather; on the other hand, it also has the advantage of improving the aesthetics of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Partial structural schematic diagram of the vehicle wiper device provided by an embodiment of the present utility model;

[0043] Figure 2 Partial structural connection schematic diagram of the vehicle wiper device provided by an embodiment of the present utility model;

[0044] Figure 3 Partial structural connection schematic diagram of the wiper arm assembly of the vehicle wiper device provided by an embodiment of the present utility model;

[0045] Figure 4 Overall structural schematic diagram of the vehicle wiper device provided by an embodiment of the present utility model in an unused state;

[0046] Figure 5 Overall structural schematic diagram of the vehicle wiper device provided by an embodiment of the present utility model in a use state;

[0047] Figure 6 Structural connection schematic diagram of the intermediate connection component and the wiper component provided by an embodiment of the present utility model.

[0048] Description of the reference numerals:

[0049] 1, driving assembly;

[0050] 10, driving component;

[0051] 100, rotating shaft; 110, driving link mechanism;

[0052] 1101, first link; 1102, second link;

[0053] 11, swinging housing;

[0054] 2, wiper arm assembly;

[0055] 20, swing arm component;

[0056] 30, transmission component;

[0057] 310, first transmission part; 311, guiding part; 312, roller; 313, elastic member;

[0058] 3110, cam;

[0059] 320. Second transmission part; 321. First linkage mechanism; 322. Second linkage mechanism; 323. First component; 324. Second component; 325. Third component; 326. Fourth component;

[0060] 3230. First rack; 3240. First gear; 3250. Second gear; 3260. Second rack; 3270. Mounting shaft;

[0061] 330. Third transmission part;

[0062] 40. Intermediate telescopic component;

[0063] 400. Movable telescopic rod; 410. Limit component;

[0064] 50. Wiper component;

[0065] 500. Wiper blade; 510. Wiper bracket; 520. Wiper limit piece;

[0066] 60. Limit component. Detailed implementation manner

[0067] The windshield wiper is an important accessory installed on the windshield of an automobile, used to sweep away rain, snow and dust that obstruct the line of sight on the windshield. Therefore, the windshield wiper plays an important role in driving safety. The electric windshield wiper is driven by an electric motor. The left and right wiper blades of the wiper are pressed against the outer surface of the windshield by the wiper arms. The electric motor drives the reduction mechanism to rotate and makes a reciprocating motion through the drive rod system, driving the wiper arms and wiper blades to swing left and right to wipe the windshield.

[0068] Existing automobile windshield wipers usually adopt a reciprocating swing method to make the automobile windshield wiper contact the windshield, so as to clean rain, snow, etc. on the automobile windshield. However, when the existing automobile windshield wiper is cleaning, due to the fixed stroke of the windshield wiper, there are usually certain dead corners that cannot be cleaned, resulting in the sliding of rainwater on the windshield or the deposition of snow, blocking the driver's line of sight, and thus affecting the driver's observation of the driving road conditions through the windshield.

[0069] Therefore, the windshield wiper has the problem that the wiper scraping stroke is fixed, there is a scraping blind area during use, which makes it inconvenient to use and reduces the safety performance of the automobile when driving in rainy and snowy weather.

[0070] To solve the above problems, the present utility model provides a windshield wiper device for a vehicle, which includes a wiper arm assembly and a driving assembly; the wiper arm assembly includes a swing arm component, a transmission component, and a wiper component, and the swing arm component is drivingly connected to the power output end of the driving assembly; the transmission component includes a first transmission part and a second transmission part, the power input end of the first transmission part is drivingly connected to the driving assembly through the swing arm component, the power input end of the second transmission part is drivingly connected to the power output end of the first transmission part through the swing arm component, and the wiper component is drivingly connected to the power output end of the second transmission part. When this device is in operation, on the one hand, it has the advantages of being convenient to use, reducing the driver's field of vision blind area, thereby improving the safety of the vehicle when driving in rainy and snowy weather; on the other hand, it also has the advantage of enhancing the aesthetics of the vehicle.

[0071] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0072] First, a general description of this windshield wiper device for a vehicle will be given.

[0073] Please refer to Figures 1 - 3 , an embodiment of the present utility model discloses a windshield wiper device for a vehicle, which includes a wiper arm assembly 2 and a driving assembly 1 for driving the wiper arm assembly 2 to swing; the wiper arm assembly 2 includes a swing arm component 20, a transmission component 30, and a wiper component 50, and the swing arm component 20 is drivingly connected to the power output end of the driving assembly 1; when this windshield wiper device for a vehicle is in operation, the driving assembly 1 can drive the swing arm component 20 to swing on the outer surface of the vehicle's windshield.

[0074] Specifically, the transmission component 30 includes a first transmission part 310 and a second transmission part 320 provided at both ends of the swing arm component 20, the power input end of the first transmission part 310 is drivingly connected to the driving assembly 1 through the swing arm component 20, the power input end of the second transmission part 320 is drivingly connected to the power output end of the first transmission part 310 through the swing arm component 20, and the wiper component 50 is drivingly connected to the power output end of the second transmission part 320.

[0075] More specifically, when this windshield wiper device for a vehicle is in operation, the driving assembly 1 can drive the swing arm component 20 to swing and synchronously drive the first transmission part 310 and the second transmission part 320 to drive the wiper component 50 to move relative to the swing arm component 20 along the extension direction of the swing arm component 20. Through this setting method, by using the driving assembly 1 to drive the swing arm component 20 to swing, the wiper component 50 can be extended along the extension direction of the swing arm component 20 at the same time, so that the wiper component 50 can wipe a larger area on the vehicle's windshield; it is not only convenient to use, but also reduces the driver's field of vision blind area and improves the safety performance of the vehicle when driving in rainy and snowy weather.

[0076] More specifically, the second transmission part 320 includes a first linkage mechanism 321 and a second linkage mechanism 322. Among them, the first linkage mechanism 321 includes a first member 323 disposed at one end of the swing arm member 20, and a second member 324 adapted to the first member 323 and rotating as the swing arm swings; the second linkage mechanism 322 includes a third member 325 rotating synchronously with the second member 324, and a fourth member 326 adapted to the third member 325 and drivingly connected to the end of the wiper member 50; wherein, the transmission ratios of the first linkage mechanism 321 and the second linkage mechanism 322 are different, and the transmission ratio of the second linkage mechanism 322 is greater than that of the first linkage mechanism 321, so that the extension stroke of the wiper member 50 along the swing arm member 20 is greater than the driving stroke of the driving component 1.

[0077] It should be understood that the driving stroke of the driving component 1 is the moving stroke of the swing arm member 20 moving along its extending direction; the extension stroke of the wiper member 50 is the moving stroke of the wiper member 50 moving along the extending direction of the swing arm member 20.

[0078] Therefore, through this setting method, when designing the vehicle wiper device, its overall size can be appropriately reduced, so that when the vehicle wiper device is installed on the automotive windshield, the occupied area at the automotive windshield is reduced, and the aesthetics of the vehicle is improved.

[0079] More specifically, the working principle of this vehicle wiper device is as follows: When the vehicle is driving in rainy or snowy weather and this vehicle wiper device is used, the driving component 1 drives the swing arm member 20 to swing. While the power of the synchronous linkage first transmission part 310 is transmitted to the first member 323 via the swing arm member 20, the first member 323 drives the second member 324 to rotate and synchronously drives the third member 325 to rotate. At the same time, the third member 325 drives the fourth member 326 to drive the wiper member 50 to move relative to the swing arm member 20 along the extending direction of the swing arm member 20, so as to achieve the purpose of changing the position of the wiper member 50, making it extend along the extending direction of the swing arm member 20, extending the wiper member 50, increasing the wiping stroke of the wiper member 50, thereby reducing the driver's vision blind area and improving the safety performance of the vehicle when driving in rainy or snowy weather.

[0080] In summary, this vehicle wiper device has the advantages of being convenient to use, reducing the driver's vision blind area, and thus improving the safety of the vehicle when driving in rainy or snowy weather on the one hand; on the other hand, it also has the advantage of improving the aesthetics of the vehicle.

[0081] In the implementation manner disclosed in this embodiment, as Figures 1 - 4 shown, the structure and its setting method of the driving component 1 of this vehicle wiper device will be further explained below.

[0082] In an implementable embodiment, the driving component 1 includes a swinging housing 11 extending along the extending direction of the swing arm member 20, and a driving member 10 drivingly connected to the swinging housing 11 for driving the swinging housing 11 to swing.

[0083] Specifically, the driving member 10 includes a driving motor (not shown in the figure), a rotating shaft 100, and a mounting bracket (not shown in the figure). The mounting bracket is fixedly installed at the vehicle windshield. The driving motor is installed on the mounting bracket. The rotating shaft 100 is fixedly connected to one end of the swinging housing 11 and extends along the thickness direction of the swinging housing 11. The driving end of the driving motor is drivingly connected to the rotating shaft 100. Moreover, the driving motor drives the rotating shaft 100 to rotate forward or backward around its axis and synchronously drives the swinging housing 11 to swing around the axis of the rotating shaft 100.

[0084] Specifically, when the vehicle wiper device works, since the wiper member 50 has a limited rotation angle (generally 90° - 110°) when wiping the vehicle windshield, the wiper member 50 always reciprocates within a limited rotation angle range. Therefore, the driving motor is provided to drive the rotating shaft 100 to rotate forward or backward around its axis and synchronously drive the swinging housing 11 to swing around the axis of the rotating shaft 100, so as to limit the swinging angle of the swinging housing 11 and avoid interfering with other structural members installed at the vehicle windshield, such as the sheet metal for limiting the windshield glass, the conductive joints on the windshield glass, etc., ensuring the reliability of the vehicle wiper device during operation.

[0085] In an implementable embodiment, the driving member 10 further includes a driving link mechanism 110. One end of the driving link mechanism 110 is drivingly connected to the power output end of the driving motor, and the other end is fixedly connected to the rotating shaft 100. Wherein, the driving motor drives the driving link mechanism 110 and synchronously drives the rotating shaft 100 to rotate forward or backward around its axis.

[0086] Specifically, by providing the driving link mechanism 110, when the driving member 10 works, the driving motor drives the driving link mechanism 110 and synchronously drives the rotating shaft 100 to rotate forward or backward around its axis, so that the power of the driving motor can be better transmitted. Compared with the driving motor directly driving the rotating shaft to rotate, by providing a driving connection mechanism to transmit the power of the driving motor, according to the lever principle, the power of the driving motor can be reduced and the service life of the driving motor can be extended.

[0087] More specifically, the structure and setting manner of the driving link mechanism 110 are not limited.

[0088] In a feasible embodiment, the driving linkage mechanism 110 includes a first rocker arm, a second rocker arm and a third rocker arm, wherein the driving end of the driving motor is transmission-connected to one end of the first rocker arm for driving the first rocker arm to swing; one end of the second rocker arm is rotationally connected to the other end of the first rocker arm, and the other end is rotationally connected to one end of the third rocker arm; the other end of the third rocker arm is fixedly connected to the rotating shaft 100.

[0089] Specifically, when the driving motor drives the first swing arm to swing, the first swing arm synchronously links the second swing arm to swing, thereby driving the third swing arm to swing. At the same time, the third swing arm drives the rotating shaft 100 to rotate forward or reverse and synchronously links the swing housing 11 to swing on the windshield of the car.

[0090] In another feasible embodiment, the driving link mechanism 110 includes a first link 1101 and a second link 1102, wherein the driving end of the driving motor is transmission-connected to one end of the first link 1101, for driving the first link 1101 to perform reciprocating translational motion along the width direction of the vehicle; the other end of the first link 1101 is rotationally connected to one end of the second link 1102, and the other end of the second link 1102 is fixedly connected to the rotating shaft 100.

[0091] Specifically, when the driving motor drives the first connecting rod 1101 to perform reciprocating translational motion along the width direction of the automobile, the second connecting rod 1102 is synchronously linked to swing and drive the rotating shaft 100 to rotate forward or reverse.

[0092] In the implementation method disclosed in this embodiment, Figures 3 - 6 As shown, the structure and arrangement of the wiper arm assembly 2 of the vehicle wiper device will be further explained below.

[0093] In a feasible embodiment, the swing arm component 20 is at least partially fixedly disposed on a side surface of the swing housing 11, and the first transmission part 310 includes a guide 311 disposed in the swing housing 11 and corresponding to the other side end of the swing arm component 20, and a roller 312 movably disposed on the other side end of the swing arm component 20 and abutting against the outer periphery of the guide 311. When the wiper arm assembly 2 is in motion, the driving part 10 drives the swing housing 11 to swing, and synchronously links the roller 312 to slide along the outer periphery of the guide 311, and synchronously drives the second transmission part 320 to drive the wiper component 50 to move relative to the swing arm component 20 along the extension direction of the swing arm component 20. It should be understood that the swing arm component 20 is at least partially fixedly disposed on a side surface of the swing housing 11, and can be 1 / 2, 1 / 3, 2 / 5, etc. of the overall length of the swing arm component 20.

[0094] Specifically, during the use of this vehicle windshield wiper device, when the driving component 10 drives the swinging housing 11 to swing, the swinging housing 11 drives the swing arm component 20 to swing. At the same time, the swing arm component 20 drives the roller 312 to slide along the outer periphery of the guiding component 311, and synchronously drives the second transmission part 320 to drive the wiper component 50 to move relative to the swing arm component 20 along the extending direction of the swing arm component 20. Through this operation mode, it can be known that the working mode of the wiper component 50 during operation is that during the process of its rotation with the swinging housing 11, it will also move along the extending direction of the swing arm component 20 to increase the wiping area, reducing the driver's visual blind area. Compared with the prior art windshield wiper during operation, the wiper stroke is fixed. This vehicle windshield wiper device has higher practicability.

[0095] More specifically, by providing the swinging housing 11, on the one hand, it can also protect the swing arm component 20 and the first transmission part 310 provided inside the swinging housing 11. On the other hand, by providing the swinging housing 11 to shield the swing arm component 20 and the first transmission part 310, the aesthetics of this vehicle windshield wiper device is improved. It should be understood that the second transmission part 320 can also be provided inside the swinging housing 11.

[0096] More specifically, the structure and setting mode of the swing arm component 20 are not limited. For example, it can be set as a swinging rod, a transmission rod, a connecting rod, etc.

[0097] More specifically, in the implementation mode disclosed in this embodiment, please refer to Figures 1 - 3 ; the swing arm component 20 is arranged on the inner surface of the swinging housing 11 through a plurality of limiting components 60. The plurality of limiting components 60 are all located inside the swinging housing 11 and are arranged at intervals along the extending direction of the swing arm component 20, and the plurality of limiting components 60 are arranged in a ring around the outer periphery of the swing arm component 20 and are fixedly connected to the inner wall surface of the swinging housing 11.

[0098] More specifically, by providing a plurality of limiting components 60 to limit the swing arm component 20, the problem of abnormal noise caused by the swing of the swing arm component 20 during the process of swinging with the swinging housing 11 is prevented. It should be understood that the number of the limiting components 60 can be 2, 3, 5, etc.

[0099] More specifically, the structure and setting mode of the limiting component 60 are not limited. For example, it can be set as a limiting ring, a limiting block with a through hole opened on the side wall, etc.

[0100] In an implementable embodiment, a plurality of limiting members 60 are provided as limiting blocks with through-holes formed in the side walls. The plurality of limiting blocks are all located inside the swing housing 11 and are arranged at intervals along the extending direction of the swing arm member 20. Moreover, the plurality of limiting blocks are arranged in a ring around the outer periphery of the swing arm member 20 and are fixedly connected to the inner wall surface of the swing housing 11. The swing arm member 20 sequentially passes through the through-holes of the plurality of limiting blocks and is slidably connected to the plurality of limiting blocks. It should be understood that the number of the plurality of limiting blocks can be set to 2, 3, 4, etc.

[0101] In another implementable embodiment, a plurality of limiting members 60 are provided as limiting rings. The plurality of limiting rings are all located inside the swing housing 11 and are arranged at intervals along the extending direction of the swing arm member 20. Moreover, the plurality of limiting rings are arranged in a ring around the outer periphery of the swing arm member 20 and are fixedly connected to the inner wall surface of the swing housing 11. The swing arm member 20 sequentially passes through the plurality of limiting rings and is slidably connected to the plurality of limiting rings. It should be understood that the number of the plurality of limiting rings can be set to 2, 3, 4, etc.

[0102] More specifically, please refer to Figures 1 - 3 , and the structure and arrangement manner of the second transmission part 320 are not limited.

[0103] In an implementable embodiment, the first member 323 is provided as a first rack 3230 formed at one end of the swing arm member 20, the second member 324 is a first gear 3240 adapted to mesh with the first rack 3230; the third member 325 is a second gear 3250 coaxially rotating with the first gear 3240, and the fourth member 326 is a second rack 3260 formed at one end of the wiper member 50.

[0104] Specifically, the first gear 3240 and the second gear 3250 are rotatably sleeved on the same mounting shaft 3270. The mounting shaft 3270 is fixedly installed on the inner wall surface of the swing housing 11. The first rack 3230 meshes with the first gear 3240, and the second gear 3250 meshes with the second rack 3260.

[0105] More specifically, during the use of this vehicle wiper device, when the driving component 10 drives the swinging housing 11 to swing and the swing arm component 20 drives the roller 312 to slide along the outer periphery of the guiding component 311, the first rack 3230 moves along the extending direction of the swing arm component 20, so that the first gear 3240 rotates around the mounting shaft 3270, and at the same time drives the second gear 3250 to rotate. At the same time, the second gear 3250 synchronously drives the second rack 3260 to drive the wiper component 50 to move along the extending direction of the swing arm component 20. Through the transmission method of gear-rack meshing, the transmission efficiency is improved, and the power input to the first rack 3230 can be effectively transmitted to the second rack 3260 to achieve efficient power transmission. Moreover, since the meshing between the gear and the rack has relatively small sliding, the loss of power transmission can be reduced.

[0106] It should be understood that when the first gear 3240 and the second gear 3250 are sleeved on the mounting shaft 3270, the sides of the first gear 3240 and the second gear 3250 close to each other are fixedly connected. The fixed connection method can be clamping, screwing, welding, etc.; moreover, the transmission ratio of the second gear 3250 is greater than that of the first gear 3240, so that the second gear 3250 can amplify the rotation stroke of the first gear 3240.

[0107] In another implementable embodiment, the first component 323 is set as a first guiding rack formed at one end of the swing arm component 20, the second component 324 is a first transmission gear adapted to mesh with the first guiding rack; the third component 325 is a second transmission gear coaxially rotating with the first transmission gear, and the fourth component 326 is a second guiding rack formed at one end of the wiper component 50.

[0108] Specifically, the first transmission gear and the second transmission gear are sleeved on the same rotating shaft and fixedly connected to the rotating shaft. The rotating shaft is rotatably connected to the inner wall surface of the swinging housing 11. The first guiding rack meshes with the first transmission gear, and the second transmission gear meshes with the second guiding rack.

[0109] More specifically, during the use of this vehicle wiper device, when the driving component 10 drives the swinging housing 11 to swing and the swing arm component 20 drives the roller 312 to slide along the outer periphery of the guiding component 311, the first guiding rack moves along the extending direction of the swing arm component 20, so that the first guiding rack drives the first transmission gear to drive the rotating shaft to rotate. At the same time, the second transmission gear is driven by the rotating shaft to rotate. At the same time, the second transmission gear synchronously drives the second guiding rack to drive the wiper component 50 to move along the extending direction of the swing arm component 20.

[0110] It should be understood that when the first transmission gear and the second transmission gear are sleeved on the rotating shaft, the first transmission gear and the second transmission gear can be arranged at intervals on the rotating shaft, or the first transmission gear and the second transmission gear can be fixedly connected on the side close to each other; and, the transmission ratio of the second transmission gear is greater than that of the first transmission gear, so that the second transmission gear can amplify the driving stroke of the driving component 10.

[0111] Specifically, please refer to Figure 2 and Figure 3 , the structure and setting method of the guiding component 311 are not limited. For example, it can be set as a cam 3110, a wedge block, a bump, etc.

[0112] In an implementable embodiment, the guiding component 311 is set as a cam 3110. The cam 3110 is arranged around the rotating shaft 100 and is rotatably connected to the rotating shaft 100, and, the cam 3110 is fixedly connected to the mounting bracket.

[0113] Specifically, when the vehicle windshield wiper device works, when the driving component 10 drives the swing housing 11 to swing back and forth, so that the swing arm component 20 drives the roller 312 to slide along the outer periphery of the cam 3110. When the roller 312 slides from the low and flat part to the convex part on the outer periphery of the cam 3110, the swing arm component 20 moves along its extending direction, and synchronously drives the windshield wiper component 50 to extend, increasing the wiping area of the windshield wiper component 50 on the automobile windshield; when the roller 312 slides from the convex part to the low and flat part on the outer periphery of the cam 3110, the swing arm component 20 retracts along its extending direction, and synchronously drives the windshield wiper component 50 to retract; through this working mode, it can be ensured that when the driving component 10 drives the swing housing 11 to swing back and forth to drive the windshield wiper component 50 to swing, when the windshield wiper component 50 wipes the windshield of the automobile, since the wiping area is fan-shaped, therefore, the windshield wiper component 50 first extends to wipe the dead corner position on the windshield, and then gradually retracts to avoid touching the vehicle body position on the side of the windshield, thereby improving the working reliability and practicability of the vehicle windshield wiper device.

[0114] In another implementable embodiment, the guiding component 311 is set as a wedge block. The wedge block is fixedly connected to the mounting bracket and is not connected to the rotating shaft 100.

[0115] Specifically, when the vehicle wiper device is working, when the driving component 10 drives the swinging housing 11 to swing reciprocally, the swing arm component 20 drives the roller 312 to slide along the wedge surface of the wedge block. When the roller 312 slides from the lower part to the higher part along the wedge surface of the wedge block of the cam 3110, the swing arm component 20 moves along its extending direction and synchronously drives the wiper component 50 to extend, increasing the wiping area of the wiper component 50 on the vehicle windshield; when the roller 312 slides from the higher part to the lower part along the wedge surface of the wedge block, the swing arm component 20 retracts along its extending direction and synchronously drives the wiper component 50 to retract.

[0116] In the implementation manner disclosed in this embodiment, please refer to Figures 1 - 3 , the first transmission part 310 further includes an elastic member 313.

[0117] In an implementable implementation manner, the elastic member 313 is looped around the circumference of the swing arm component 20 and extends along the extending direction of the swing arm component 20. One end is power-connected to the roller 312 and the other end is fixedly connected to the inner peripheral wall of the swinging housing 11 to press the roller 312 against the outer surface of the cam 3110.

[0118] Specifically, by setting the elastic member 313, during the use of the vehicle wiper device, when the driving component 10 drives the swinging housing 11 to swing, the swing arm component 20 drives the roller 312 to slide along the outer circumference of the cam 3110. When the roller 312 slides from the lower and flat part to the convex part along the outer circumference of the cam 3110, the swing arm component 20 moves along its extending direction and synchronously drives the wiper component 50 to extend, and the elastic member 313 is compressed and pre-stores a resilience force. When the roller 312 slides from the convex part to the lower and flat part along the outer circumference of the cam 3110, the swing arm component 20 retracts along its extending direction and synchronously drives the wiper component 50 to retract. The resilience force of the elastic member 313 can ensure that the roller 312 can always fit and slide along the outer circumference of the cam 3110; thus ensuring the reliability of the cooperation between the swing arm component 20 and the cam 3110, and avoiding the risk that the roller 312 disengages from the outer circumference of the cam 3110 when the roller 312 slides from the convex part to the lower and flat part along the outer circumference of the cam 3110.

[0119] Specifically, the structure and setting manner of the elastic member 313 are not limited.

[0120] In an implementable embodiment, the elastic member 313 includes a first limiting ring, a spring, and a second limiting ring. The first limiting ring is disposed around the swing arm member 20 and fixedly connected to the swing arm member 20, and the first limiting ring is slidably connected to the swing housing 11; the spring is disposed around the swing arm member 20, one end is fixedly connected to the first limiting ring, and the other end extends along the extending direction of the swing arm member 20 and is fixedly connected to the second limiting ring; the second limiting ring is disposed around the swing arm member 20 and slidably connected to the swing arm member 20, and the second limiting ring is fixedly connected to the swing housing 11.

[0121] In another implementable embodiment, the elastic member 313 includes a first limiting snap ring, a spring, and a second limiting snap ring. The first limiting snap ring is disposed around the swing arm member 20 and slidably connected to the swing arm member 20, and the first limiting snap ring is fixedly connected to the swing housing 11; the spring is disposed around the swing arm member 20, one end is fixedly connected to the first limiting snap ring, and the other end extends along the extending direction of the swing arm member 20 and is fixedly connected to the second limiting snap ring; the second limiting ring is disposed around the swing arm member 20 and fixedly connected to the swing arm member 20, and the second limiting snap ring is slidably connected to the swing housing 11.

[0122] In the embodiments disclosed in this embodiment, please refer to Figures 2 - 6 , the wiper arm assembly 2 further includes an intermediate telescopic member 40.

[0123] In an implementable embodiment, the intermediate telescopic member 40 includes a plurality of movable telescopic rods 400 arranged in sequence along the extending direction of the swing arm member 20; among them, the movable telescopic rod 400 closest to the swing arm member 20 is drivingly connected to the swing arm member 20 through a second transmission portion 320, and between two adjacent movable telescopic rods 400 and between the farthest movable telescopic rod 400 and the wiper member 50 are both drivingly connected through a third transmission portion 330, where the third transmission portion 330 has the same structure as the second transmission portion 320. It should be noted that the third transmission portion 330 has the same structure as the second transmission portion 320, and the structure of the second transmission portion 320 has been described above, and the structure of the third transmission portion 330 will not be elaborated here.

[0124] Specifically, an intermediate telescopic member 40 is provided, and the intermediate telescopic member 40 includes a plurality of movable telescopic rods 400, so that the driving stroke of the first transmission portion 310 is gradually amplified in sequence through the second transmission portion 320 and the third transmission portion 330, and further, the extending stroke of the wiper member 50 along the swing arm member 20 is longer, so as to adapt to more vehicle models, such as: large trucks, trucks and other vehicle models with larger windshield areas.

[0125] In an achievable implementation, a wiper housing is further provided on the outer periphery of the wiper component 50 and the intermediate telescopic component 40. The wiper housing is arranged along the extending direction of the swing arm component 20. One end of the wiper housing is fixedly connected to the swing housing 11, and an opening is provided at the other end to facilitate the wiper component 50 to extend out. The intermediate telescopic component 40 is arranged on the inner surface of the wiper housing through a plurality of limiting members 410. The plurality of limiting members 410 are all located inside the wiper housing and are spaced at intervals along the extending direction of the swing arm component 20. The plurality of limiting members 410 are arranged in a ring around the outer periphery of the intermediate telescopic component 40 and are fixedly connected to the inner wall surface of the wiper housing. Moreover, at least one limiting member 410 is provided on each of the plurality of movable telescopic rods 400 of the intermediate connecting component 40, and the movable telescopic rod 400 is slidably connected to the limiting member 410.

[0126] It should be understood that the number of the plurality of limiting members 410 can be set to 2, 3, 5, etc., and those skilled in the art can design according to the number of the movable telescopic rods 400.

[0127] More specifically, the limiting member 410 can be set as a limiting ring arranged in a ring around the movable telescopic rod 400, and a limiting chute fixedly connected to the end of the movable telescopic rod 400 and the wiper housing, etc.

[0128] More specifically, the number of the plurality of movable telescopic rods 400 can be set to 2, 3, 5, etc.

[0129] In an achievable implementation, the plurality of movable telescopic rods 400 are set as a first movable telescopic rod and a second movable telescopic rod arranged in sequence along the extending direction of the swing arm component 20. One end of the first movable telescopic rod is in transmission connection with the swing arm component 20 through the second transmission part 320, the other end is in transmission connection with one end of the second movable telescopic rod through the third transmission part 330, and the other end of the second movable telescopic rod is in transmission connection with one end of the wiper component 50 through the third transmission part 330.

[0130] In another achievable implementation, the plurality of movable telescopic rods 400 are set as a first movable telescopic rod, a second movable telescopic rod and a third movable telescopic rod arranged in sequence along the extending direction of the swing arm component 20. One end of the first movable telescopic rod is in transmission connection with the swing arm component 20 through the second transmission part 320, the other end is in transmission connection with one end of the second movable telescopic rod through the third transmission part 330, the other end of the second movable telescopic rod is in transmission connection with one end of the third movable telescopic rod through the third transmission part 330, and the other end of the third movable telescopic rod is in transmission connection with one end of the wiper component 50 through the third transmission part 330.

[0131] In the implementation disclosed in this embodiment, please refer to Figures 3 - 6, the structure and installation method of the wiper component 50 will be further described below.

[0132] In an implementable embodiment, the wiper component 50 includes a wiper blade 500, a wiper limit member 520, and a wiper bracket 510. The wiper blade 500 is fixedly installed on one side of the wiper bracket 510. The other end of the wiper bracket 510 is in transmission connection with the end of the adjacent intermediate telescopic component 40. The wiper limit member 520 is arranged at the other end of the wiper bracket 510 and is slidably connected to the wiper bracket 510.

[0133] Specifically, since the wiper blade 500 is usually soft, the wiper bracket 510 is provided to support it, so that when the wiper component 50 is working, it can better fit the windshield of the vehicle and clean the windshield of the vehicle.

[0134] More specifically, the wiper limit member 520 can be set as a limit chute, a limit slide rail, etc. fixedly arranged at the end of the intermediate telescopic component 40.

[0135] The above specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the above description. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0136] It should be noted that in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0137] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0138] The terms "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0139] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

Claims

1. A windshield wiper device for a vehicle, characterized in that, It includes a scraper arm assembly and a driving assembly for driving the scraper arm assembly to swing; wherein, The wiper arm assembly comprises a swing arm component, a transmission component and a wiper component, wherein the swing arm component is transmission-connected to the power output end of the drive component; and The transmission component comprises a first transmission part and a second transmission part arranged at both ends of the swing arm component, the power input end of the first transmission part is connected to the driving assembly through the swing arm component, the power input end of the second transmission part is connected to the power output end of the first transmission part through the swing arm component, and the wiper component is connected to the power output end of the second transmission part; wherein The second transmission part includes a first linkage mechanism and a second linkage mechanism, wherein the first linkage mechanism includes a first component arranged at one end of the swing arm component, and a second component adapted to the first component and rotated with the swing of the swing arm component; the second linkage mechanism includes a third component that rotates synchronously with the second component, and a fourth component adapted to the third component and transmission-connected to the end of the wiper component; wherein the transmission ratios of the first linkage mechanism and the second linkage mechanism are different, and the transmission ratio of the second linkage mechanism is greater than the transmission ratio of the first linkage mechanism; and, The driving assembly drives the swing arm component to swing, and synchronously links the first transmission part and the second transmission part to drive the wiper component to move relative to the swing arm component along the extension direction of the swing arm component.

2. The windshield wiper device for a vehicle according to claim 1, characterized in that, The driving assembly comprises a swing housing extending along the extending direction of the swing arm component, and a driving component drivingly connected to the swing housing and used for driving the swing housing to swing; in The swing arm component is at least partially fixedly arranged on a side surface of the swing housing, and the first transmission part includes a guide member arranged in the swing housing and corresponding to the other side end of the swing arm component, and a roller movably arranged on the other side end of the swing arm component and abutting against the outer periphery of the guide member; The driving component drives the swing housing to swing, and synchronously links the roller to slide along the outer periphery of the guide member, and synchronously drives the second transmission part to drive the wiper component to move relative to the swing arm component along the extension direction of the swing arm component.

3. The windshield wiper device for a vehicle according to claim 2, characterized in that, The first component is configured as a first rack formed at one end of the swing arm component, the second component is a first gear meshing with the first rack; the third component is a second gear coaxially rotating with the first gear, and the fourth component is a second rack formed at one end of the wiper component; wherein, The first gear and the second gear are rotatably sleeved on the same mounting shaft, the mounting shaft is fixedly mounted on the inner wall surface of the swing housing, the first rack is meshed with the first gear, and the second gear is meshed with the second rack.

4. The windshield wiper device for a vehicle according to claim 3, characterized in that, The driving component includes a driving motor, a rotating shaft, and a mounting bracket. The mounting bracket is fixedly installed at the automotive windshield. The driving motor is installed on the mounting bracket. The rotating shaft is fixedly connected to one end of the swinging housing and extends along the thickness direction of the swinging housing. The driving end of the driving motor is in transmission connection with the rotating shaft; And, the driving motor drives the rotating shaft to rotate forward or backward about its axis and synchronously drives the swinging housing to swing about the axis of the rotating shaft.

5. The windshield wiper device for a vehicle according to claim 4, characterized in that, The guiding member is provided as a cam. The cam is disposed around the rotating shaft and is rotatably connected to the rotating shaft. And the cam is fixedly connected to the mounting bracket.

6. The windshield wiper device for a vehicle according to claim 5, characterized in that, The first transmission part further includes an elastic member. The elastic member is disposed around the circumferential side of the swing arm part and extends along the extending direction of the swing arm part. One end is in power connection with the roller, and the other end is fixedly connected to the inner peripheral wall of the swinging housing to press the roller against the outer surface of the cam.

7. The windshield wiper device for a vehicle according to claim 6, characterized in that, The wiper arm assembly further includes an intermediate telescopic member. The intermediate telescopic member includes a plurality of movable telescopic rods sequentially arranged along the extending direction of the swing arm part; wherein, the movable telescopic rod closest to the swing arm part is in transmission connection with the swing arm part through the second transmission part. And between two adjacent movable telescopic rods, and between the most distal movable telescopic rod and the wiper part are all in transmission connection through the third transmission part. Wherein, the third transmission part has the same structure as the second transmission part.

8. The windshield wiper device for a vehicle according to claim 7, characterized in that, The wiper part includes a wiper blade and a wiper bracket. The wiper blade is fixedly installed on one side of the wiper bracket. The other end of the wiper bracket is in transmission connection with the end of the adjacent intermediate telescopic member.

9. The windshield wiper device for a vehicle according to claim 8, wherein, The swing arm part is disposed on the inner surface of the swinging housing through a plurality of limiting members. The plurality of limiting members are all located inside the swinging housing and are spaced along the extending direction of the swing arm part. And the plurality of limiting members are disposed around the outer circumference of the swing arm part and are fixedly connected to the inner wall surface of the swinging housing.

10. The windshield wiper device for a vehicle according to claim 9, characterized in that, The driving component further includes a driving link mechanism. One end of the driving link mechanism is in transmission connection with the power output end of the driving motor, and the other end is fixedly connected to the rotating shaft; wherein, the driving motor drives the driving link mechanism and drives the rotating shaft to rotate forward or backward about its axis.

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