A wiper assembly

Abstract

The application provides a wiper assembly, comprising: a wiping assembly and a spraying assembly; the wiping assembly comprises a driving mechanism, a three-link assembly and a wiper assembly; the driving mechanism comprises two motors arranged side by side; the two motors are independently operated in time; the spraying assembly comprises a glass water tank, a foaming cleaning liquid tank and a mixing tank; the mixing tank is internally provided with a nozzle assembly; the nozzle assembly forms cleaning foam after the glass water and the foaming cleaning liquid pass through a secondary Venturi suction effect; and the mixing tank is connected with a spray head matched with the wiper assembly. In the application, the wiper assembly can be driven to operate by the two motors; only one motor is in a working state during driving; and after any one motor is worn out, the other motor realizes a driving effect, thereby improving the service life of the overall operation. Solid spots on the front windshield are degraded and separated by the cleaning foam, the wiper assembly is more comprehensive in cleaning, and the front windshield has higher cleanliness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wiper, in particular to a wiper assembly. BACKGROUND

[0002] It is known that the wiper includes a motor, a four-bar linkage mechanism, a wiper arm shaft, a wiper blade, etc. When the driver presses the switch of the wiper, the motor starts, the rotating speed of the motor drives the swing arm through the speed reduction and torque increasing of the worm gear, the swing arm drives the four-bar linkage mechanism, the four-bar linkage mechanism drives the rotating shaft on the front panel to swing left and right, and finally the rotating shaft drives the wiper blade to sweep the windshield.

[0003] In recent years, with the support of national policy and investment, the domestic rail vehicles have shown an explosive development trend, and the trend of the parts of the rail vehicles towards modularization, standardization and serialization is becoming more and more obvious, and the wiper of the rail vehicle is no exception. The current wiper of the rail vehicle uses a motor as a power source to drive the wiper blade to brush the glass, and the repeated swing brushing of the wiper, the motor speed and stability have a serious impact on its service life and reliability.

[0004] However, the motor of the existing wiper is damaged under the conditions of long-time working state, long-time intermittent switching state, long service life, etc. The motor is inside the head, and frequent detection or replacement of the motor causes great inconvenience. In the process of high-speed running of the rail vehicle, the damage of the motor causes the wiper to fail to operate normally, the safety coefficient of driving is greatly reduced, and the motor assembly with a long service life and the ability to cope with unexpected situations cannot be ensured. At the same time, when the rail vehicle stops at the station temporarily, the front windshield is affected by dust and rainwater and forms a solid spot state, and even more, the debris of small flying insects is scattered and fixed on the front windshield during the high-speed running of the rail vehicle. At this time, ordinary glass water cannot remove the foreign matter on the front windshield, causing low visibility of the front windshield, and the wiper cannot be cleaned by repeated brushing. Often, the front windshield needs to be cleaned manually, which is time-consuming and laborious when cleaning manually due to the high height of the vehicle head, which is not conducive to fast driving. SUMMARY

[0005] The present application provides a wiper assembly, which improves the safety and stability of the wiper operation, ensures the extension of the service life of the normal operation, provides a plan for handling unexpected motor damage, and ensures a high cleaning effect on the front windshield.

[0006] The present application provides a wiper assembly, which includes a brushing assembly and a spraying assembly.

[0007] The wiper blade assembly comprises a driving mechanism, a three-link assembly connected to the driving mechanism, and a wiper assembly connected to the three-link assembly; the driving mechanism comprises two motors arranged side by side, and each motor is connected with a combination disc; the combination disc comprises a pawl disc connected with the output shaft of the motor, a ratchet disc in rotational cooperation with the pawl disc and capable of being in a first state and a second state, and a belt pulley coaxially connected with the ratchet disc;

[0008] The two motors can be independently operated in time division, and the belt pulleys of the two combination discs are connected with a rack belt.

[0009] When any one of the ratchet discs is in the first state, the corresponding pawl disc engages to drive the ratchet disc to rotate synchronously; when any one of the ratchet discs is in the second state, the corresponding pawl disc is in a static state and does not engage the ratchet disc, and the corresponding belt pulley drives the pawl disc to rotate circumferentially through the rack belt.

[0010] The spraying assembly comprises a glass water tank, a foaming cleaning liquid tank, and a mixing tank; the glass water tank is connected to the mixing tank through a pump water assembly, and the foaming cleaning liquid tank is connected to the mixing tank through an electromagnetic switch valve; the mixing tank is internally provided with a nozzle assembly, the nozzle assembly forms cleaning foam through secondary Venturi suction effect after the glass water and the foaming cleaning liquid, and the mixing tank is connected with a spray head matched with the wiper assembly.

[0011] In the application, the wiper assembly can be driven to operate by two motors, only one motor is in a working state during driving, and the other motor realizes driving function after any one group of motors is worn out, thereby improving the service life of the whole operation. The solid spots on the front windshield are degraded and separated by the cleaning foam, the wiper assembly is cleaned more comprehensively, and the front windshield has higher cleanliness.

[0012] In a specific embodiment, the wiper assembly comprises two wiper arms and a wiper blade detachably and fixedly connected to the two wiper arms; the three-link assembly drives the two wiper arms to synchronously reciprocate. The wiper blade synchronously wipes the front windshield.

[0013] In a specific embodiment, the three-link assembly comprises a first rod eccentrically connected to the two belt pulleys, a second rod hingedly connected to the first rod, and two third rods symmetrically connected to the second rod; the two third rods are connected to the two wiper arms one by one. The linkage performance is stable and not easy to be damaged.

[0014] In one specific embodiment, the second rod is provided with one or two rods; when the second rod is provided with one rod, the two first rods are connected to the second rod in a staggered hinged manner; when the second rod is provided with two rods, the two first rods are connected to the two second rods in a one-to-one hinged manner. The two setting modes optimize the installation structure.

[0015] In one specific embodiment, the pawl disc is rotationally connected to the ratchet disc; the inside of the pawl disc is equipped with a pawl, and the inside of the ratchet disc is provided with a ratchet matched with the pawl. The linkage and disengagement performance are good.

[0016] In one specific embodiment, when any one of the ratchet discs is in the first state, the corresponding motor is in a starting state, and the corresponding pawl engages the ratchet to rotate, while the other ratchet disc is in the second state. The linkage and disengagement performance are good.

[0017] In one specific embodiment, when any one of the ratchet discs is in the second state, the corresponding motor is in a stopping state, and the corresponding pawl avoids the ratchet to rotate, while the other ratchet disc is in the first state. The linkage and disengagement performance are good.

[0018] In one specific embodiment, the pump water assembly is a water pump provided inside the glass water tank, and the water pump is connected to the water inlet nozzle of the mixing tank through a pipeline. The high-pressure pump mixes the glass water with the foaming cleaning liquid.

[0019] In one specific embodiment, the foaming cleaning liquid tank is communicated with the pipeline through the electromagnetic switch valve. It does not affect the normal use of the wiper during driving.

[0020] In one specific embodiment, the nozzle assembly comprises a first nozzle connected to the water inlet nozzle, a mixing cavity connected to the first nozzle, and a second nozzle at the bottom of the mixing cavity; wherein the first nozzle is provided with a bent flow channel, and the bottom of the second nozzle is provided with a foaming net. After sufficient impact, cleaning foam is formed to degrade solid spots on the front windshield, facilitating the wiper to clean it up and ensuring the cleanliness of the front windshield. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the wiper assembly provided by the embodiment of the application is shown in the figure;

[0022] Figure 2 The structure schematic diagram of the first embodiment of the wiper assembly provided by the embodiment of the application is shown in the figure;

[0023] Figure 3 The structure schematic diagram of the second embodiment of the wiper assembly provided by the embodiment of the application is shown in the figure;

[0024] Figure 4 Structure diagram of the driving mechanism provided in another embodiment of the present application;

[0025] Figure 5 Sectional view of the ratchet wheel and the pawl wheel provided in the embodiment of the present application;

[0026] Figure 6 Structure diagram of the nozzle assembly provided in the embodiment of the present application.

[0027] Reference numerals:

[0028] Scraper assembly-100, driving mechanism-110, first motor-111, second motor-112, first pawl wheel-113, first ratchet wheel-114, first belt pulley-115, rack belt-116, first pawl-117, first ratchet-118, first rod-120, second rod-130, third rod-140, wiper arm-150, wiper blade-160;

[0029] Spraying assembly-200, glass water tank-210, foaming cleaning liquid tank-220, water pump-230, mixing tank-240, water inlet nozzle-241, first spraying piece-242, mixing cavity-243, second spraying piece-244, electromagnetic switch valve circuit-250, connecting hose-260, spray head-270. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present application should be understood as the general meaning understood by the person skilled in the art to which the present disclosure belongs. The terms "first", "second" and the like used in one or more embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and the like mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connect" and the like are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In order to facilitate the understanding of the rain wiper assembly provided by the embodiments of the present application, first of all, the application scenario thereof is described, and the rain wiper assembly is mainly used in the technical field of rain wipers. However, the motor of the existing rain wiper is damaged under the following conditions: long-time working state, intermittent frequency in the on-off state for a long time, and long service life state. The motor is located in the interior of the head, and frequent detection or replacement thereof causes great inconvenience. During the high-speed running of the rail vehicle, the damage of the motor causes the rain wiper to be unable to normally operate, and the traffic safety factor is greatly reduced, so that the motor assembly of the rail vehicle cannot have a long service life and cope with sudden conditions. Meanwhile, when the rail vehicle temporarily stops at the station, the front windshield is affected by dust and dirt in the rainwater to form a solid spot state, and more seriously, the debris of small flying insects is scattered and fixed on the front windshield during the high-speed running of the rail vehicle. At this time, ordinary glass water cannot remove the sundries on the front windshield, causing the visibility of the front windshield to be low, and the rain wiper cannot be cleaned through repeated wiping. Often, the front windshield needs to be cleaned manually. Since the vehicle head is high, manual cleaning is time-consuming and laborious, which is not conducive to fast driving. In view of this, the rain wiper assembly in the present application improves the safety and stability of the operation of the rain wiper, ensures the extension of the service life of the normal operation, and proposes a plan for handling the sudden motor damage; and ensures that the front windshield has a relatively high cleaning effect.

[0033] Reference Figure 1 , Figure 1 is a structural schematic view of a rain wiper assembly. The rain wiper assembly provided by the embodiments of the present application comprises a wiping assembly 100. The wiping assembly 100 is used to drive the rain wiper assembly by using a double-power system. Only one power system works during driving, which meets the power demand for driving the rain wiper assembly. When the rail vehicle is driven for a long time, the power system continuously outputs to drive the rain wiper assembly, and during this process, the two power systems are alternately used after a certain time length, so as to avoid the fatigue caused by the long-time use of a single power system. Meanwhile, when the rail vehicle is driven in rainy and snowy weather, after one of the power systems is damaged, the other power system is enabled to meet the power demand, improve the driving safety system, and the wiping assembly 100 has a relatively long service life, thereby reducing the manual operation and maintenance cost.

[0034] Specifically, the wiping assembly 100 comprises a driving mechanism 110, a three-link assembly connected with the driving mechanism 110, and a rain wiper assembly connected with the three-link assembly. The driving mechanism 110 is a power output component in the present application, which is used to drive the three-link assembly to perform reciprocating rotation operation, the three-link assembly drives the rain wiper assembly to perform reciprocating swing, and the wiping operation on the front windshield is completed. Figure 4 and Figure 5As shown, the drive mechanism 110 includes two motors arranged side by side. Using two motors as the power output components eliminates the need for expensive servo motors; stepper motors are sufficient in this embodiment. For ease of understanding, the two motors are defined as the first motor 111 and the second motor 112, respectively. A combination disk is connected to the output shafts of both motors. The combination disk allows the first motor 111 and the second motor 112 to start independently at different times. This means that when the first motor 111 starts as the power output, it drives the three-bar linkage to swing, thereby driving the wiper assembly to wipe the windshield, ensuring its transparency and cleanliness. However, under the action of the combination disk, the second motor 112 remains stationary and does not start. After the first motor 111 has been intermittently switching on and off for an extended period, based on the extreme continuous working time determined by the test requirements (e.g., the motor generates heat after 6-8 hours of continuous operation in the experimental testing end), the locomotive system will automatically switch to the second motor 112 for operation, while the first motor 111 remains stationary and cools down. This significantly extends the service life of the first motor 111 and the second motor 112, and ensures stable operation at their respective speeds. Furthermore, during rail vehicle operation, if either motor fails—for example, if the first motor 111 malfunctions (e.g., abnormal noise, unstable rotation speed, or complete stoppage)—the locomotive system will stop the first motor 111 and activate the second motor 112, bringing the first motor 111 to a standstill. The first motor 111 will then be inspected and repaired after the rail vehicle stops. During rail vehicle operation, the scraper assembly 100 operates normally, improving driving safety. It should be noted that the locomotive system is equipped with a detection mechanism that transmits alerts to the system, enabling automatic or manual switching between the first and second motors 111 and 112. These are existing technologies known to those skilled in the art and will not be elaborated upon further here.

[0035] The combination disc in this application includes a pawl disc connected to the output shaft of a motor, a ratchet disc rotatably engaged with the pawl disc and capable of operating in a first and a second state, and a pulley coaxially rotatably connected to the ratchet disc. When any one of the ratchet discs is in the first state, the corresponding pawl disc engages and drives the ratchet disc to rotate synchronously. When any one of the ratchet discs is in the second state, the corresponding pawl disc is stationary and not engaged with the ratchet disc, and the corresponding pulley drives the pawl disc to rotate circumferentially via a rack and pinion belt 116. The pawl disc is rotatably connected to the ratchet disc; the pawl disc contains a pawl, and the ratchet disc contains a ratchet that engages with the pawl. The linkage and disengagement performance are good. When any one of the ratchet discs is in the first state, the corresponding motor is running, the corresponding pawl engages with the ratchet and rotates, and the other ratchet disc is in the second state. The linkage and disengagement performance are good. When any one of the ratchet discs is in the second state, the corresponding motor is stopped, the corresponding pawl avoids the ratchet and rotates, and the other ratchet disc is in the first state. It has good linkage and disengagement performance.

[0036] As can be seen from the above description, during the startup process of the first motor 111, the output shaft of the first motor 111 drives the pawl disc to rotate. This pawl disc is defined as the first pawl disc 113, and the ratchet disc that cooperates with the first pawl disc 113 is defined as the first ratchet disc 114. The first pawl 117 inside the first pawl disc 113 drives the first ratchet 118 inside the first ratchet disc 114 to mesh, thereby achieving the purpose of the first pawl disc 113 driving the first ratchet disc 114 to rotate. The pulley that is fixedly cooperated with the first ratchet disc 114 is defined as the first pulley 115. Thus, after the first motor 111 is driven, the first pulley 115 is driven to rotate through a linkage.

[0037] During the startup process of the second motor 112, the output shaft of the second motor 112 drives the pawl disc to rotate. This pawl disc is defined as the second pawl disc, and the ratchet disc that cooperates with the second pawl disc is defined as the second ratchet disc. The second pawl inside the second pawl disc drives the second ratchet inside the second ratchet disc to mesh, thereby achieving the purpose of the second pawl disc driving the second ratchet disc to rotate. The pulley that is fixedly cooperated with the second ratchet disc is defined as the second pulley. Thus, after the second motor 112 drives it, the second pulley is driven to rotate through linkage.

[0038] In the specific implementation of independent operation of the first motor 111 and the second motor 112, for example, the first motor 111 is the priority power starting element. After the first motor 111 starts, it drives the first pulley 115 to rotate, and under the action of the rack and pinion belt 116, it drives the second pulley to rotate synchronously. In other embodiments of this application, a tensioner can be provided between the rack and pinion belts 116 to ensure the stability of the transmission. During the rotation of the second pulley, it drives the second ratchet disc to rotate. The second ratchet inside the second ratchet disc disengages from the second pawl inside the second pawl disc. The second pawl is retracted and reset under the action of the spring, without affecting the rotation of the second ratchet. It can be seen that during the start-up of the first motor 111, the second motor 112 is not driven to operate synchronously, thereby ensuring that one motor can realize power transmission while the other motor is stationary. Alternating use or emergency backup can ensure the stable operation of the scraper assembly 100.

[0039] refer to Figure 2 The wiper assembly includes two wiper arms 150 and wiper blades 160 detachably fixed to the two wiper arms 150; a three-bar linkage drives the two wiper arms to reciprocate synchronously. The wiper blades 160 simultaneously wipe the windshield.

[0040] The three-bar linkage driven by the drive mechanism 110 includes: a first rod 120 eccentrically rotatably connected to two pulleys, a second rod 130 hinged to the first rod 120, and two third rods 140 symmetrically rotatably connected to the second rod 130; the two third rods 140 are connected one-to-one with the two wiper arms. The linkage performance is stable and not easily damaged. It should be understood that the first pulley 115 and the second pulley are both connected to the corresponding first rod 120 via an eccentric shaft. Under the action of the first rod 120, the second rod 130 is driven to swing left and right, while the two third rods 140, under the action of the positioning shaft, drive the wiper arm 150 to swing, thereby realizing the wiping operation of the wiper blade 160 on the windshield.

[0041] exist Figure 2 As can be seen, the second rod 130 is a single horizontal bar. When there is only one second rod 130, the two first rods 120 are hinged to the second rod 130 in a staggered manner. Thus, the second rod 130 can swing left and right during the rotation of either first rod 120. Therefore, when one of the first rods 120 acts as the driving point, it drives the second rod 130 to swing laterally left and right, and the second rod 130 in turn drives the other first rod 120 to swing synchronously.

[0042] exist Figure 3As can be seen, the second rod 130 consists of two independent horizontal bars. When there are two second rods 130, the two first rods 120 are hinged to the two second rods 130 in a one-to-one correspondence. The linkage transmission is carried out by the rack and pinion belt 116. Similarly, when any one of the first rods 120 acts as the driving point, the other second rod 130 moves accordingly. Therefore, the scraper assembly 100 in this application has good linkage performance in both the first and second embodiments, ensuring high swing stability, extending service life, and optimizing the installation structure according to different assembly requirements.

[0043] Continue reading Figure 1 The wiper assembly in this application also includes a spray assembly 200; the spray assembly 200 differs from existing spray assemblies that only spray windshield washer fluid, which cannot remove solid spots formed on the windshield due to dust and rainwater, or even solid spots formed by the debris of tiny flying insects that are scattered and adhered to the windshield during the high-speed operation of rail vehicles. The spray assembly 200 uses cleaning foam to clean the outer surface of the windshield.

[0044] Specifically, the spray assembly 200 includes: a windshield washer fluid tank 210, a foaming cleaning fluid tank 220, and a mixing tank 240. The windshield washer fluid tank 210 is connected to the mixing tank 240 via a pump assembly, and the foaming cleaning fluid tank 220 is connected to the mixing tank 240 via an electromagnetic switch valve 250. The mixing tank 240 contains a nozzle assembly that uses a secondary Venturi suction effect to form cleaning foam from the windshield washer fluid and foaming cleaning fluid. The mixing tank 240 is connected to a nozzle 270 via a hose 260 that works with the wiper assembly. Therefore, before the rail vehicle restarts, cleaning foam is used to remove solid spots on the windshield. This is achieved by pumping the windshield washer fluid 230 into the mixing tank 240, simultaneously pumping in the foaming cleaning fluid, which mixes and foams in the mixing tank 240. The nozzle assembly is used to create a Venturi suction effect by the mutual impact of the windshield washer fluid and foaming cleaning fluid, facilitating foam formation. Simultaneously, the pneumatic system of the rail vehicle can be used to pressurize and output cleaning foam from the mixing tank 240. The cleaning foam is then evenly sprayed onto the windshield through the nozzle 270, soaking the solid spots for 10-30 seconds. At this time, the electromagnetic switch valve 250 is closed, and the water pump assembly continues to pump windshield washer fluid into the mixing tank 240. The windshield washer fluid is simultaneously sprayed out from the nozzle 270. After the windshield washer fluid combines with the cleaning foam, the scraper assembly 100 is activated to scrape the windshield, degrading and breaking down the solid spots. The scraping effect is significant, ensuring high clarity of the windshield.

[0045] To achieve the above objectives, the pumping assembly is a water pump 230 located inside the windshield washer fluid tank 210. The water pump 230 is connected to the inlet nozzle 241 of the mixing tank 240 via a pipeline. High-pressure pumped windshield washer fluid is mixed with foaming cleaning fluid. The foaming cleaning fluid tank 220 is connected to the pipeline via an electromagnetic switch valve 250, ensuring normal operation of the windshield wipers during vehicle operation. Therefore, when cleaning foam is needed, the electromagnetic switch valve 250 is open; during normal vehicle operation, the electromagnetic switch valve 250 is closed, preventing the generation of cleaning foam from obstructing the driver's view.

[0046] When specifically and quickly forming cleaning foam, refer to... Figure 6 As shown, the nozzle assembly includes: a first spray element 242 connected to the water inlet nozzle 241, a mixing chamber 243 connected to the first spray element 242, and a second spray element 244 located at the bottom of the mixing chamber 243; wherein, the first spray element 242 is provided with a bent flow channel, and the bottom of the second spray element 244 is provided with a foaming net. When the windshield washer fluid and foaming cleaning liquid are mixed and pass through the bent flow channel of the first spray element 242, a first Venturi suction effect is generated, and foam is formed at this time and enters the mixing chamber 243; after being mixed again in the mixing chamber 243, a second Venturi suction effect is generated by impacting the foaming net, ensuring a high foaming effect. The formed cleaning foam can be forced out and sprayed onto the windshield by applying pneumatic pressure to the mixing tank 240 using the pneumatic system of the rail vehicle, thereby degrading and differentiating solid spots. During normal use of windshield washer fluid, the water pump 230 fills the mixing chamber 243 and sprays it out from the nozzle 270 under the action of pump pressure. A small pump is installed in the mixing tank 240 to pump out residual glass cleaner 230 from the mixing tank 240 to prevent it from affecting the preparation of cleaning foam. Simultaneously, according to the locomotive system control, the glass cleaner in the mixing tank 240 is kept full during the movement of the rail vehicle. Of course, in other embodiments of this application, the pump 230 can also be connected to the mixing tank 240 via a three-way pipe. The other outlet end of the three-way pipe is connected to a connecting hose 260. Both outlet pipes on the three-way pipe are connected to solenoid valves. Opening the corresponding solenoid valves allows for the delivery of glass cleaner to the nozzle 270 for spraying or to the mixing tank 240 for the preparation of cleaning foam. Using corresponding solenoid valves to open different delivery channels is a technique known to those skilled in the art and will not be elaborated upon here.

[0047] As can be seen from the above structure, during short-term temporary stops of the rail vehicle, a small pump pumps out the windshield washer fluid from the mixing tank 240 (pump 230) and sprays it onto the windshield. Simultaneously, the pump 230 is activated and the solenoid valve 250 is opened. The windshield washer fluid and foaming cleaning solution foam in the mixing tank 240, forming a cleaning foam with a rapid reaction. After the pump 230 and solenoid valve 250 are shut off, the pneumatic system of the rail vehicle forces the cleaning foam from the mixing tank 240 to the nozzle 270, where it is sprayed onto the windshield. At this time, the wiper system is activated, and the pump 230 pumps out windshield washer fluid. Under the oscillating action of the wiper blades 160, solid spots are removed, ensuring a high level of cleanliness on the windshield.

[0048] In this invention, both motors can drive the wiper assembly, but only one motor is active during driving. Furthermore, if either motor wears out, the other motor takes over, thus extending the overall lifespan of the wiper system. Cleaning foam is used to degrade and separate solid spots on the windshield, resulting in a more thorough cleaning of the wiper assembly and ensuring a high level of cleanliness for the windshield.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification, which are not provided in detail for the sake of brevity.

[0050] Additionally, to simplify the description and discussion, and to avoid obscuring one or more embodiments of this specification, well-known power / ground connections to integrated circuits and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring one or more embodiments of this specification, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which one or more embodiments of this specification will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuit layouts) have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that one or more embodiments of this specification may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0051] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

[0052] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A windshield wiper assembly, characterized in that, include: Scraper assembly and spray assembly; The wiper assembly includes: a drive mechanism, a three-bar linkage assembly connected to the drive mechanism, and a wiper assembly connected to the three-bar linkage assembly; the drive mechanism includes two motors arranged side by side, each motor being connected to a combination disc; the combination disc includes a pawl disc connected to the output shaft of the motor, a ratchet disc rotatably engaged with the pawl disc and capable of being in a first state and a second state, and a pulley rotatably connected to the ratchet disc on the same axis; The two motors can operate independently at different times, and a rack and pinion belt connects the pulleys of the two combined discs; when either ratchet disc is in the first state, the corresponding pawl disc engages and drives the ratchet disc to rotate synchronously; when either ratchet disc is in the second state, the corresponding pawl disc is stationary and not engaged with the ratchet disc, and the corresponding pulley drives the pawl disc to rotate circumferentially after being driven by the rack and pinion belt. The spray assembly includes: a windshield washer fluid tank, a foaming cleaning fluid tank, and a mixing tank; the windshield washer fluid tank is connected to the mixing tank via a pump assembly, and the foaming cleaning fluid tank is connected to the mixing tank via an electromagnetic switch valve circuit; the mixing tank is equipped with a nozzle assembly, which forms cleaning foam by combining windshield washer fluid and foaming cleaning fluid through a secondary Venturi suction effect, and the mixing tank is connected to a nozzle that cooperates with the wiper assembly; The nozzle assembly includes: a first spray element connected to the inlet nozzle of the mixing tank, a mixing chamber connected to the first spray element, and a second spray element located at the bottom of the mixing chamber; wherein, The first spray nozzle is provided with a bent flow channel, and the bottom of the second spray nozzle is provided with a foaming net.

2. The wiper assembly according to claim 1, characterized in that, The wiper assembly includes: two wiper arms and wiper blades detachably fixed to the two wiper arms; the three-bar linkage drives the two wiper arms to reciprocate synchronously.

3. The wiper assembly according to claim 2, characterized in that, The three-bar linkage includes: a first rod eccentrically rotatably connected to the two pulleys, a second rod hinged to the first rod, and two third rods symmetrically rotatably connected to the second rod; the two third rods are connected to the two wiper arms one-to-one.

4. The wiper assembly according to claim 3, characterized in that, The second rod may be provided in one or two parts; when there is only one second rod, the two first rods are hinged to the second rod in a staggered manner; when there are two second rods, the two first rods are hinged to the two second rods in a one-to-one correspondence.

5. The wiper assembly according to claim 1, characterized in that, The pawl disc is rotatably connected to the ratchet disc; the pawl disc is equipped with a pawl inside, and the ratchet disc is provided with a ratchet that cooperates with the pawl inside.

6. The wiper assembly according to claim 5, characterized in that, When any one of the ratchet discs is in the first state, the corresponding motor is in the start state, the corresponding pawl engages the ratchet and rotates, and the other ratchet disc is in the second state.

7. The wiper assembly according to claim 6, characterized in that, When any one of the ratchet discs is in the second state, the corresponding motor is stopped and the corresponding pawl avoids the ratchet from rotating, while the other ratchet disc is in the first state.

8. The wiper assembly according to claim 1, characterized in that, The water pump assembly is a water pump installed inside the glass water tank, and the water pump is connected to the water inlet nozzle of the mixing tank through a pipeline.

9. The wiper assembly according to claim 8, characterized in that, The foaming cleaning liquid tank is connected to the pipeline via the electromagnetic switch valve.

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