Windscreen wiper unfreezing device and vehicle

Abstract

The utility model relates to the technical field of vehicle windscreen wipers, and provides a windscreen wiper unfreezing device and a vehicle, the windscreen wiper unfreezing device comprises an air duct and an air blowing port, and the air duct is communicated with a warm air pipeline of a vehicle air conditioner. The air blowing opening is communicated with the air channel and faces a windscreen wiper assembly on the outer side of the vehicle. The air blowing port can blow hot air to the windscreen wiper assembly to unfreeze the windscreen wiper, the air blowing direction of the air blowing port in the position of the front windshield integrally faces the tail of the vehicle, and the air blowing direction of the air blowing port can also be approximately flush with the front windshield to blow hot air to the whole front windshield to demist and unfreeze the front windshield. According to the scheme, the hot air flow in the air conditioner warm air system can be directly blown to the windscreen wiper assembly on the outer side of the windscreen through the air duct, the windscreen wiper is directly unfrozen instead of being unfrozen by heating the front windscreen, the unfreezing speed is higher, the windscreen wiper is heated more evenly, and the unfreezing effect is better. And meanwhile, the wiper motor is prevented from being stuck and damaged due to local unfreezing of the wiper and non-unfreezing of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle windshield wipers, in particular to a windshield wiper thawing device and a vehicle. Background Art

[0002] With the continuous development of the automobile industry, customers have higher and higher requirements for automobile comfort and intelligence. In the cold northern regions, it often snows in winter and the temperature is very low. The wipers are sometimes frozen to the windshield, affecting their use.

[0003] In the prior art, windshield defrosting is usually used to defrost the wipers. The principle is to blow air to the windshield through the air-conditioning outlet on the inside of the vehicle's windshield to heat the windshield. In this way, the wipers attached to the outside of the windshield can also be defrosted by the heat. However, the windshield has poor thermal conductivity, and the wipers are generally attached to the lower end of the outside of the windshield when not in use. They are prone to uneven heating or require a long time to defrost. For the passengers in the car, they need to wait a long time before the wipers can be used. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a wiper defrosting device and a vehicle to improve the defrosting efficiency of the vehicle's wipers.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a wiper defrosting device, comprising:

[0006] an air duct connected to the warm air duct of the vehicle air conditioner;

[0007] The air blowing port is communicated with the air duct and is arranged on the outside of the windshield and faces the wiper assembly on the outside of the vehicle.

[0008] In a specific embodiment of the present invention, the blowing port faces opposite to the forward direction of the vehicle.

[0009] In a specific embodiment of the present invention, an air blowing device is provided in the air duct.

[0010] In a specific embodiment of the present invention, it further includes a water flow groove arranged at the lower end of the windshield, wherein the notch of the water flow groove faces upward and is connected to the outer side surface of the windshield.

[0011] In a specific embodiment of the present invention, a drain outlet is provided at the bottom or wall of the water flow trough.

[0012] In a specific embodiment of the present invention, the drain outlet is arranged below the air outlet.

[0013] In a specific embodiment of the present invention, the air outlet is arranged on a groove wall of the water groove away from the windshield.

[0014] In a specific embodiment of the present invention, a flange is provided at the upper end of the groove wall where the blowing port is located to shield the upper portion of the blowing port.

[0015] In a specific embodiment of the present invention, a one-way valve is provided in the air duct between the air outlet and the air blowing device.

[0016] In a specific embodiment of the present invention, the number of the air blowing ports is the same as the number of the wiper assemblies, and the air blowing ports are respectively directed towards the motor of each wiper assembly.

[0017] In a specific embodiment of the present invention, the air blowing device is arranged in the front cabin of the vehicle. The present invention also includes a vehicle comprising the above-mentioned windshield wiper defrosting device.

[0018] The present invention proposes a wiper defrosting device and a vehicle. In the above scheme, the hot air flow in the air-conditioning heater system can be directly blown to the wiper assembly on the outside of the windshield through the air duct, so that the wipers are directly defrosted instead of being defrosted by heating the front windshield. The thawing speed is faster and the wipers are heated more evenly. At the same time, it also avoids the wiper motor being stuck and damaged due to partial thawing of the wiper while the motor is not thawed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 Schematic diagram of the structure of a wiper defrosting device in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the position of the air outlet of the wiper defrosting device in one embodiment of the present invention;

[0022] Figure 3 The figure is a flow chart of a wiper thawing method according to an embodiment of the present invention.

[0023] Explanation of the reference numerals: 10, air duct; 11, air outlet; 12, one-way valve; 20, water flow trough; 21, drain outlet; 22, flange; 30, air blowing device; 40, wiper assembly; 41, motor. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. During actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] Wipers have become standard equipment on motor vehicles. Wipers are devices installed on the windshield of a car to remove rain, snow, dust and other debris to keep the driver's field of vision clear. Wipers are generally divided into front wipers and rear wipers, and rear wipers are usually installed on SUV models.

[0027] The wiper defrost device is designed to help remove ice or snow from the wipers to ensure good visibility in adverse weather conditions. This is very important for driving safety, especially in cold winter weather.

[0028] Some vehicles are currently equipped with heated wipers. These wipers have built-in electric heating elements that heat the wipers, quickly melting ice and snow while maintaining effective wiping of the windshield. However, the wipers themselves are oscillating components, and installing electric heating elements on them requires complex wiring designs. Furthermore, most wipers are designed to be replaceable, and installing electric heating elements on them would make disassembly and assembly difficult or impossible, reducing the wipers' versatility.

[0029] like Figure 1 As shown, a wiper defrosting device includes an air duct 10 and an air blowing port 11:

[0030] The air duct 10 is connected to the warm air duct of the vehicle's air conditioner. The warm air duct in this application refers to the vehicle's own heat source. For new energy vehicles, it can be the vehicle's own air conditioning outlet or hot air duct. For fuel vehicles, it can be the hot air flow duct at the engine radiator or a hot air flow duct directly connected to the engine compartment. The air duct 10 can be set in the engine compartment of a fuel vehicle or in the front engine compartment of a new energy vehicle. The above solution directly utilizes the original vehicle heat source without the need for an additional heating device. Only the air duct 10 needs to be set, saving manufacturing costs.

[0031] The air outlet 11 is connected to the air duct 10 and is positioned outside the windshield and toward the wiper assembly 40 on the outside of the vehicle. The air outlet 11 in this application is preferably positioned below the outside of the front windshield of the vehicle. Alternatively, the air outlet 11 may be positioned below the rear windshield for vehicles equipped with a rear wiper. The air outlet 11 can blow a hot stream of air toward the wiper assembly 40 to defrost the wipers. The air outlet 11 at the front windshield is oriented toward the rear of the vehicle. Alternatively, the air outlet 11 can be positioned approximately flush with the windshield to blow a hot stream of air toward the entire front windshield to defog and defrost the windshield.

[0032] like Figure 1 As shown, the air outlet 11 is oriented opposite to the vehicle's forward direction. This prevents the relative airflow generated by the vehicle from entering the air outlet 11, preventing dust and debris from entering through the air outlet 11 and contaminating the vehicle's air conditioning system. Orienting the air outlet opposite to the vehicle's forward direction reduces the chance of these impurities being drawn into the air conditioning system, thereby extending the system's service life and maintaining its efficiency.

[0033] like Figure 1 As shown, an air blowing device 30 is provided in the air duct 10. The air blowing device 30 is preferably a blower, but may also be an air pump, compressor, or other device. Since blowing hot air into the vehicle to warm the vehicle interior is not necessary when defrosting the wipers, an additional air blowing device 30 is provided. This allows the wipers to be defrosted independently. The air blowing device 30 can also independently control the airflow size and volume, allowing for faster defrosting using a larger air volume.

[0034] like Figure 1 As shown, the windshield also includes a water channel 20 at the lower end of the windshield. The channel 20 has an upward-facing notch that connects to the outer surface of the windshield. Thawing wipers inevitably generates water flow. The channel 20 collects this thawing water flow and drains rainwater, washer spray, and other liquids that may flow under the windshield, ensuring the windshield remains clean. The channel 20 is located at the lower edge of the windshield, closely adjacent to the front of the vehicle. It is a long, narrow groove that conforms to the lower edge of the windshield.

[0035] like Figure 1As shown, the bottom or wall of the gutter 20 is provided with a drain port 21 to allow the collected liquid to flow smoothly out of the vehicle and onto the ground, ensuring that the front windshield of the vehicle remains dry and clean. The drain port 21 is designed as a pipe or outlet to allow rainwater to flow out smoothly. These drain ports 21 are typically connected to the gutter 20 at the bottom of the windshield to ensure that the liquid can be effectively discharged. The drain port 21 is located at the bottom edge of the windshield, close to the front of the vehicle. The drain port 21 can be located on the left, right, and / or center of the windshield, depending on the vehicle model and design.

[0036] like Figure 1 As shown, the drain port 21 is located below the air outlet 11. This is to effectively handle moisture generated by the air conditioning system. During operation, the air conditioning system may generate a certain amount of moisture, especially when ice forms and melts in the air outlet 11. By placing the drain port 21 below the air outlet 11, any moisture generated can be drained through the drain port 21 rather than directly entering the air outlet 11. This helps prevent moisture from entering the vehicle interior while ensuring the normal operation of the air conditioning system.

[0037] like Figure 1 As shown, the air outlet 11 is located on the side of the water channel 20 away from the windshield. This allows the air outlet 11 to defrost the wipers while simultaneously defrosting the water inside the water channel 20, preventing the thawed water from the wipers from being unable to flow out directly and accumulating inside the water channel 20. Furthermore, the air outlet 11 is shielded by the wall of the water channel 20 in this location, preventing it from being affected by the airflow during vehicle operation, thus preventing excessive wind noise and cold air backflow.

[0038] like Figure 1 As shown, the upper end of the slot wall where the air outlet 11 is located is provided with a flange 22 that shields the air outlet from above. The flange 22 prevents objects such as dust, debris, or other foreign objects from entering the air outlet 11 from above. This helps maintain the cleanliness of the air conditioning system, preventing impurities from entering the system and affecting air quality. The flange 22 also visually shields the air outlet 11, preventing it from being exposed and affecting the overall appearance of the vehicle.

[0039] like Figure 1 As shown, a one-way valve 12 is provided in the air duct 10 between the air outlet 11 and the air blowing device 30. Since the air duct 10 needs to be connected to the vehicle's heating duct, the one-way valve 12 can prevent water or cold air from flowing back from the air outlet 11 into the vehicle's heating duct.

[0040] like Figure 2As shown, the number of the air outlets 11 is the same as the number of the wiper assemblies 40. For sedans, only two wiper assemblies 40 are generally provided on the front windshield, while SUV models are provided with an additional wiper on the rear windshield. Therefore, the number of air outlets 11 in this application is two for sedan models and three for SUV models.

[0041] like Figure 2 As shown, the air outlet 11 is directed toward the motor 41 of each wiper assembly 40. When the windshield is frozen in winter, the owner generally chooses to defrost the windshield first. That is, the car's heating system is turned on to heat the inside of the windshield to melt the frost on the outside of the windshield. The wipers attached to the windshield will also be frozen at this time. However, the wiper motor 41 is not directly connected to the windshield of the vehicle, making it difficult to defrost it through the defrost system. Therefore, the air outlet 11 is directed toward the wiper motor 41 to defrost it. In this way, with the cooperation of the defrost system in the vehicle, the vehicle can be defrosted more quickly.

[0042] like Figure 1 As shown, the blowing device 30 is arranged in the front cabin of the vehicle. The front cabin of the vehicle is close to the air conditioning system and generally has extra space, especially in new energy vehicles, which have a larger front cabin space to facilitate the arrangement of the blowing device 30.

[0043] The utility model also includes a wiper thawing method, comprising the following steps:

[0044] S1. Obtaining a wiper start command: The wiper start command is accomplished by operating a wiper switch or button inside the vehicle. This switch is typically located on the steering wheel or dashboard near the driver's seat.

[0045] S2, starting the wiper motor 41 according to the wiper start instruction;

[0046] S3. Obtaining the working status of the wipers; passengers in the car generally only choose to defrost the front windshield, and it is difficult to directly determine whether the wipers are frozen. The solution in this application can also link the wiper defrosting system with the front windshield defrosting system, and preferably start the wiper defrosting system according to the working status of the wipers.

[0047] S4. Obtain a defrost instruction based on the wiper operating state. If the wiper operating state is not activated, a defrost instruction is obtained and activation of the wiper motor 41 is terminated. If the wiper operating state is activated, no activation occurs. The inactivated wiper operating state means that the wiper motor 41 is not swinging. This can be determined by detecting excessive current flowing through the wiper motor 41 using a current sensor, or by using a camera in a rain-sensing wiper system to determine whether the wiper is operating. While using the vehicle, it is easy for a vehicle owner to detect frosting on the windshield but difficult to detect whether the wiper motor 41 is frozen. Therefore, when the vehicle owner activates the wipers, a determination is made as to whether the wipers are frozen. If the wiper motor 41 is frozen, further activation of the wipers is terminated to prevent burnout caused by excessive current flowing through the motor 41 during activation.

[0048] S5. The vehicle heating system and the air blowing device 30 are activated according to the defrost command, so that the hot air in the heating duct is pumped through the air duct 10 to the air blowing device 30, and then blown through the air blowing port 11 to the vehicle wiper assembly 40. If it is determined that the wipers are frozen, hot air is blown toward the wipers to freeze them, so that they can be used later.

[0049] The utility model also includes a vehicle, comprising the above-mentioned wiper thawing device.

[0050] To sum up, the present invention proposes a wiper defrosting device and a vehicle. In the above scheme, the hot air flow in the air conditioning and heating system can be directly blown to the wiper assembly 40 outside the windshield through the air duct 10, so that the wiper is directly defrosted instead of being defrosted by heating the front windshield. The thawing speed is faster and the wiper is heated more evenly. At the same time, it also avoids the wiper being partially thawed while the motor 41 is not thawed, causing the wiper motor 41 to be stuck and damaged.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

[0052] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0053] Reference throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are considered part of the spirit and scope of the invention.

[0054] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0055] In addition, unless otherwise expressly indicated, any marking arrows in the drawings should be regarded as illustrative only and not limiting. Furthermore, unless otherwise indicated, the term "or" as used herein is generally intended to mean "and / or." Where a term is unclear in providing separation or combination capabilities, the combination of components or steps will also be considered as indicated.

[0056] As used in the description herein and throughout the claims that follow, “a,” “an,” and “the” include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless otherwise indicated.

[0057] The above description of the illustrated embodiments of the present invention (including that described in the Abstract) is not intended to be exhaustive or to limit the present invention to the precise forms disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the art will recognize and understand. As noted, these modifications may be made to the present invention in light of the above description of the illustrated embodiments of the present invention, and these modifications will be within the spirit and scope of the present invention.

[0058] The systems and methods have been generally described herein in detail to facilitate understanding of the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more of the specific details, or can be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusing various aspects of the embodiments of the present invention.

[0059] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are within the foregoing disclosure, and it should be understood that in some cases, some features of the present invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt particular circumstances or materials to the true scope and spirit of the present invention. The present invention is not intended to be limited to the specific terminology used in the claims below and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined solely by the appended claims.

Claims

1. A wiper defrosting device, characterized in that: include: an air duct connected to the warm air duct of the vehicle air conditioner; an air blowing port, connected to the air duct, the air blowing port being arranged on the outside of the windshield and facing the wiper assembly on the outside of the vehicle; An air blowing device is provided in the air duct, and a one-way valve is provided in the air duct between the air blowing port and the air blowing device.

2. The wiper defrosting device according to claim 1, characterized in that: The air blowing port is directed opposite to the forward direction of the vehicle.

3. The wiper defrosting device according to claim 2, characterized in that: The invention also includes a water flow groove arranged at the lower end of the windshield, wherein the notch of the water flow groove faces upward and is connected with the outer side surface of the windshield.

4. The wiper defrosting device according to claim 3, characterized in that: A drain outlet is provided at the bottom or wall of the water flow trough, and the drain outlet is arranged below the air blowing port.

5. The wiper defrosting device according to claim 3, characterized in that: The air blowing port is arranged on a groove wall on one side of the water flow groove away from the windshield.

6. The wiper defrosting device according to claim 3, characterized in that: The upper end of the groove wall where the blowing port is located is provided with a flange that blocks the upper part of the blowing port.

7. The wiper defrosting device according to claim 1, characterized in that: The number of the air blowing ports is the same as the number of the wiper assemblies, and the air blowing ports are respectively directed towards the motor of each wiper assembly.

8. The wiper defrosting device according to claim 1, characterized in that: The air blowing device is arranged in the front cabin of the vehicle.

9. A vehicle, characterized in that: The invention comprises a wiper thawing device as described in any one of claims 1 to 8.

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