Supporting seat of windscreen wiper, windscreen wiper and vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicles, and discloses a supporting seat of a windscreen wiper, the windscreen wiper and a vehicle. The supporting base comprises a base body, a supporting rod and a supporting rod, the scraping arm shaft is rotatably arranged in the shaft hole; the dust cap is fixedly arranged on the scraping arm shaft in a sleeving manner, and a preset gap is kept between the dust cap and the seat body; and the sealing structure is arranged between the dustproof cap and the seat body so as to seal a gap between the dustproof cap and the seat body. According to the technical scheme provided by the invention, the problem that the supporting seat of the windscreen wiper in the related technology is easy to generate abnormal sound can be effectively solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle technology, and in particular to a wiper support seat, a wiper, and a vehicle. Background Art

[0002] A windshield wiper is a device on a car that clears rain and dirt from the windshield to maintain a clear view for the driver.

[0003] Conventional wipers typically consist of a support base and a wiper arm. The support base includes a base and a wiper shaft. The wiper shaft is rotatable relative to the base. One end of the wiper arm is sleeved onto the wiper shaft. Rotation of the wiper shaft drives the wiper arm to swing, thereby cleaning the windshield. Because rainwater and dirt can easily enter the support base, affecting the lubrication of the wiper shaft, a dust cap is typically installed on the support base.

[0004] However, since the dust cap is in contact with the support seat, friction is easily generated between the dust cap and the support seat when the wiper shaft rotates, which in turn produces abnormal noise, affecting the driving and riding experience. Utility Model Content

[0005] In view of this, the embodiments of the present application provide a wiper support seat, a wiper, and a vehicle to solve the problem in the related art that the wiper support seat is prone to generating abnormal noise.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a wiper support base, comprising:

[0008] A seat body having an axial hole;

[0009] The scraper arm shaft is rotatably disposed in the shaft hole;

[0010] The dust cap is fixedly mounted on the scraper arm shaft and maintains a preset gap with the base body;

[0011] The sealing structure is arranged between the dust cap and the base body to seal the gap between the dust cap and the base body.

[0012] The support seat provided in the embodiment of the present application includes a seat body, a wiper arm shaft, a dust cap and a sealing structure. The seat body includes an axis hole, and the wiper arm shaft is rotatably arranged in the axis hole. The seat body is the basic structure of the entire wiper support seat. The seat body can accommodate and support the wiper arm shaft so that it can rotate freely in the axis hole, thereby realizing the swing function of the wiper. The dust cap is fixedly sleeved on the wiper arm shaft to realize the connection and synchronous rotation of the dust cap and the wiper arm shaft. The dust cap can block dust, rainwater, etc. on the outside of the seat body, effectively reducing the probability of rainwater and dust entering the seat body, thereby ensuring the lubricity between the seat body and the wiper arm shaft. In addition, since there is a gap between the dust cap and the seat body, the dust cap will not contact the seat body. When the dust cap rotates with the wiper arm shaft, no friction will be generated between the dust cap and the seat body, thereby reducing the probability of abnormal noise.

[0013] In a possible implementation of the present application, the dust cap includes a mounting sleeve and a shielding skirt, the shielding skirt is arranged on the circumferential outer side of the mounting sleeve, the mounting sleeve is fixedly mounted on the scraper arm shaft, the bottom edge of the shielding skirt is lower than the top end face of the seat body, and there is a preset gap between the shielding skirt and the seat body.

[0014] In a possible implementation of the present application, the mounting sleeve has a first inner hole and a second inner hole that are connected, the first inner hole is used to interference fit with the scraper arm shaft, the second inner hole is located at one end of the mounting sleeve close to the seat body, and the aperture of the second inner hole gradually increases in the direction from away from the seat body to close to the seat body.

[0015] In a possible implementation of the present application, the shielding skirt includes a connecting section and a shielding section, the connecting section is arranged on the circumferential outer side of the mounting sleeve, and the shielding section and the connecting section are arranged at an angle to cover the upper end of the seat body;

[0016] A preset vertical gap is maintained between the connecting section and the top end surface of the seat body, and a preset radial gap is maintained between the shielding section and the outer edge of the seat body.

[0017] In a possible implementation of the present application, the shielding skirt further includes an arc-shaped transition section, which is arranged between the connecting section and the shielding section.

[0018] In a possible implementation of the present application, the support seat further includes a bearing, the scraper arm shaft is disposed in the seat body through the bearing, and the sealing structure is disposed between the dust cap and the bearing.

[0019] In a possible implementation of the present application, a sealed space is formed between the hole wall of the shaft hole, the outer wall of the scraper arm shaft and the top wall of the bearing, and the sealing structure includes a first sealing ring, which is interference-enclosed in the sealed space.

[0020] In a possible implementation of the present application, the sealing structure also includes a second sealing ring, which is located on the top of the first sealing ring, the inner edge of the second sealing ring is interference fit with the scraper arm shaft, the outer edge of the second sealing ring is located on the circumferential outside of the shaft hole, and the bottom surface of the second sealing ring is abutted against the top surface of the seat body.

[0021] In a possible implementation of the present application, the sealing structure also includes a third sealing ring, an installation groove is provided on the outer wall of the scraper arm shaft, the third sealing ring is arranged in the installation groove, and the third sealing ring clamp is arranged between the installation sleeve and the second sealing ring.

[0022] In a second aspect, an embodiment of the present application provides a wiper, comprising:

[0023] Support base, the support base is the above-mentioned support base;

[0024] The wiper arm is sleeved on the wiper arm shaft of the support seat. The wiper arm and the dust cap of the support seat are spaced apart. The wiper arm and the wiper arm shaft rotate synchronously.

[0025] The wiper of the present application includes a support seat, and thus has the advantages of good rotation smoothness and low abnormal noise.

[0026] In a third aspect, an embodiment of the present application provides a vehicle, comprising: the above-mentioned wiper.

[0027] The vehicle of this application can significantly improve the user's driving and riding experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A cross-sectional view of a support base provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the support base at A;

[0030] Figure 3 A schematic diagram of the exploded structure of the support base provided in an embodiment of the present application;

[0031] Figure 4 A cross-sectional view of the dust cap of the support base provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 10. Support seat;

[0034] 100, seat body; 110, shaft hole;

[0035] 200, scraper arm shaft; 210, mounting slot;

[0036] 300, dust cap; 301, preset gap; 3011, preset vertical gap; 3012, preset radial gap; 310, mounting sleeve; 311, first inner hole; 312, second inner hole; 320, shielding skirt; 321, connecting section; 322, shielding section; 323, arc-shaped transition section;

[0037] 400, sealing structure; 410, first sealing ring; 420, second sealing ring; 430, third sealing ring;

[0038] 500. Bearings. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0040] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0041] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0042] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0043] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0044] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0045] A windshield wiper is a device on a car that clears rain and dirt from the windshield to maintain a clear view for the driver.

[0046] Wiper blades in related art generally consist of a support base and a wiper arm. The support base includes a base and a wiper shaft. The wiper shaft is rotatable relative to the base. One end of the wiper arm is mounted on the wiper shaft. The rotation of the wiper shaft drives the wiper arm to swing, thereby cleaning the windshield. The wiper shaft is powered by an electric motor. A worm gear mechanism, which reduces speed and increases torque, converts the motor's rotational motion into a left-right swinging motion for the wiper. The wiper blades are directly responsible for removing moisture and dirt from the glass. Pressure from an elastic member maintains close contact with the glass surface to achieve effective cleaning.

[0047] The support base is a key component of a windshield wiper blade, responsible for supporting the wiper shaft and ensuring smooth rotation. Therefore, bearings are typically installed within the support base and lubricated. The structure of the support base makes its lubrication susceptible to external influences, particularly rain, dust, and dirt. The intrusion of these impurities not only accelerates wear of the support base's internal components but can also disrupt lubrication, resulting in poor rotation of the wiper shaft.

[0048] In the related technology, a dust cap is generally installed on the support seat to play a protective role. However, since the dust cap is in contact with the support seat, friction is easily generated between the dust cap and the support seat when the wiper shaft rotates, which in turn produces abnormal noise, affecting the driving and riding experience.

[0049] In view of this, the present application provides a wiper support seat, a wiper and a vehicle, wherein the support seat includes a seat body, a wiper shaft and a dust cap, the dust cap is installed on the wiper shaft and can cooperate with the seat body without contact, so that the dust cap will not generate friction with the seat body, thereby reducing the probability of generating abnormal noise.

[0050] It should be noted that the vehicle in this application may refer to a large automobile, a small car, a special-purpose vehicle, etc. For example, based on the vehicle type, the vehicle in this application may be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other vehicle types. A vehicle generally has wheels, a power source, and a transmission system arranged between the wheels and the power source. The transmission system can transmit power provided by the power source to the wheels, causing the wheels to rotate, thereby driving the vehicle.

[0051] It should be noted that in the embodiments of this application, the type of vehicle power source is not limited. For example, for a fuel-powered vehicle, the power source may refer to a gasoline engine, a diesel engine, or other fuel-powered engine; for an electric vehicle, the power source may refer to an electric motor; for a hybrid vehicle, the power source may refer to an engine or an electric motor; and for a vehicle powered by other means, the power source may refer to a device that generates power.

[0052] The specific structure of the support base of the wiper blade of the present application is described below with reference to the accompanying drawings.

[0053] Figure 1 A cross-sectional view of a support base provided in an embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the support base at A; Figure 3 A schematic diagram of the exploded structure of the support base provided in an embodiment of the present application; Figure 4 A cross-sectional view of the dust cap of the support base provided in an embodiment of the present application.

[0054] Reference Figures 1 to 4 As shown, the support base 10 of the wiper blade according to the embodiment of the present application includes: a base body 100 , a wiper arm shaft 200 , a dust cap 300 and a sealing structure 400 .

[0055] The base 100 has an axis hole 110, and the wiper arm shaft 200 is rotatably disposed in the axis hole 110. The base 100 is the basic structure of the entire wiper support base. The base 100 can accommodate and support the wiper arm shaft 200, allowing it to rotate freely in the axis hole, thereby realizing the swing function of the wiper.

[0056] The dust cap 300 is fixedly mounted on the scraper arm shaft 200, maintaining a predetermined gap between the base body 100 and the scraper arm shaft 200. The dust cap 300 is fixedly mounted on the scraper arm shaft 200, thereby connecting the dust cap 300 and rotating synchronously with the scraper arm shaft 200. The dust cap 300 can block dust, rainwater, etc. from the outside of the base body 100, effectively reducing the possibility of rainwater and dust entering the base body 100, thereby ensuring lubrication between the base body 100 and the scraper arm shaft 200.

[0057] In addition, there is a preset gap 301 between the shielding skirt 320 and the seat body 100. Due to the setting of the preset gap 301, the dust cap 300 will not contact the seat body 100. When the dust cap 300 rotates following the scraper arm shaft 200, no friction will be generated between the dust cap 300 and the seat body 100, thereby reducing the probability of abnormal noise.

[0058] Since a preset gap 301 is set to reduce abnormal noise, in order to improve the sealing between the dust cap 300 and the base body 100, a sealing structure 400 can be set between the dust cap 300 and the base body 100. The sealing structure 400 is used to seal the gap between the dust cap 300 and the base body 100, thereby further reducing the probability of rainwater, dust, etc. entering the base body 100.

[0059] The support base 10 provided in the embodiment of the present application utilizes a dust cap 300 and a sealing structure 400 to provide a shielding effect while simultaneously maintaining a non-contact fit with the base 100, thereby reducing the likelihood of abnormal noise. Furthermore, the sealing structure 400 compensates for the sealing defects caused by the non-contact fit between the dust cap 300 and the base 100, ensuring that the support base 10 provides a good shielding effect while also reducing abnormal noise generated during operation.

[0060] It should also be noted that the dust cap in this embodiment is provided as an independent part. Compared with the method of integrating the dust cap with the wiper arm, this method reduces the design and processing difficulty of the wiper arm and makes the assembly position of the wiper arm more flexible.

[0061] Specifically, in some embodiments, the dust cap 300 includes a mounting sleeve 310 and a shielding skirt 320. The shielding skirt 320 is disposed circumferentially outside the mounting sleeve 310. The mounting sleeve 310 is sleeved onto the scraper arm shaft 200 to connect the dust cap 300 to the scraper arm shaft 200. The mounting sleeve 310 is capable of rotating synchronously with the scraper arm shaft 200. The bottom edge of the shielding skirt 320 is lower than the top end surface of the base body 100, allowing the dust cap 300 to block dust, rainwater, etc. outside the base body 100, effectively reducing the probability of rainwater and dust entering the base body 100, thereby ensuring lubrication between the base body 100 and the scraper arm shaft 200.

[0062] In addition, there is a preset gap 301 between the shielding skirt 320 and the seat body 100. Due to the setting of the preset gap 301, the dust cap 300 will not contact the seat body 100. When the dust cap 300 rotates following the scraper arm shaft 200, no friction will be generated between the dust cap 300 and the seat body 100, thereby reducing the probability of abnormal noise.

[0063] Since a preset gap 301 is set to reduce abnormal noise, in order to improve the sealing between the dust cap 300 and the base body 100, a sealing structure 400 can be set between the dust cap 300 and the base body 100. The sealing structure 400 is used to seal the gap between the dust cap 300 and the base body 100, thereby further reducing the probability of rainwater, dust, etc. entering the base body 100.

[0064] In addition, the preset gap 301 is used to prevent the dust cap 300 from directly contacting the base 100 . Therefore, the size of the preset gap 301 should not be too large to reduce the probability of rainwater entering the base 100 through the preset gap 301 .

[0065] Exemplarily, the size of the preset gap 301 can be set between 0.2 mm and 0.8 mm. Specifically, the value that the size of the preset gap 301 can take includes but is not limited to 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or 0.8 mm.

[0066] Further, refer to Figure 4 As shown, in some embodiments, the mounting sleeve 310 has a first inner hole 311 and a second inner hole 312 that are connected. The first inner hole 311 is used for interference fit with the scraper arm shaft 200. The interference fit connection method can ensure the synchronous rotation of the mounting sleeve 310 and the scraper arm shaft 200, avoiding loosening or sliding, thereby ensuring the connection stability and effectiveness of the dust cap 300.

[0067] In addition, the second inner hole 312 is located at the end of the first inner hole 311 that is closest to the base 100, and the diameter of the second inner hole 312 gradually increases from farther away from the base 100 to closer to the base 100. The inclined second inner hole 312 can serve as a guide, making it easier for the scraper arm shaft 200 to align and enter the first inner hole 311, thereby simplifying the installation process and reducing installation time and difficulty. The inclined design also helps to disperse stress in the interference fit area, reducing material fatigue or damage caused by stress concentration, and improving the durability and reliability of the component.

[0068] Reference Figure 2 and Figure 4 As shown, the shielding skirt 320 includes a connecting section 321 and a shielding section 322. The connecting section 321 is disposed circumferentially outside the mounting sleeve 310. The shielding section 322 is arranged at an angle to the connecting section 321 and is used to cover the upper end of the base 100. This allows the shielding section 322 to effectively cover and protect the top end surface of the base 100 and the surrounding area, preventing dust, moisture, and other contaminants from entering the base. A predetermined gap 301 is defined between the shielding section 322 and the base 100. This predetermined gap 301 ensures that the shielding section 322 and the base 100 do not directly contact each other, thereby preventing friction and wear.

[0069] Specifically, the preset gap 301 includes a preset radial gap 3012 and a preset vertical gap 3011. Because the shielding skirt 320 includes a connecting section 321 and a shielding section 322, a preset vertical gap 3011 is formed between the connecting section 321 and the top end surface of the base 100. Maintaining the preset vertical gap 3011 between the connecting section 321 and the base 100 helps reduce the probability of friction between the connecting section 321 and the base 100. Accordingly, a preset radial gap 3012 is formed between the shielding section 322 and the outer edge of the base 100. Maintaining the preset radial gap 3012 can reduce the probability of friction between the shielding section 322 and the outer edge of the base 100.

[0070] Furthermore, the shielding skirt 320 further includes an arc-shaped transition section 323 , which is disposed between the connecting section 321 and the shielding section 322 .

[0071] The curved transition section 323 is located between the connecting section 321 and the shielding section 322 of the shielding skirt 320. Its smooth curvature effectively disperses stress concentration that could otherwise occur at the connection. The smooth curve of the curved transition section 323 guides water flow, allowing rainwater to flow down the shielding skirt 320, thereby reducing the likelihood of rainwater seeping between the dust cap 300 and the scraper arm shaft 200. Furthermore, the design of the curved transition section 323 takes aerodynamic factors into consideration; its streamlined shape helps reduce air resistance, especially during high-speed driving.

[0072] Further, if Figure 2 and Figure 3 As shown, the support seat 10 further includes a bearing 500 , and the scraper arm shaft 200 is disposed in the seat body 100 through the bearing 500 , thereby ensuring smooth rotation of the scraper arm shaft 200 .

[0073] The sealing structure 400 is disposed between the dust cap 300 and the bearing 500, specifically between the mounting sleeve 310 and the bearing 500. This design not only effectively isolates external dust and moisture, but also protects the lubrication system within the bearing 500, reducing wear and failure of the bearing 500 due to the intrusion of impurities, further extending the maintenance cycle and service life of the system.

[0074] Specifically, a sealed space is formed between the hole wall of the shaft hole 110, the outer wall of the scraper arm shaft 200 and the top wall of the bearing 500. The sealing structure 400 includes a first sealing ring 410, which is interference fit in the sealed space. The first sealing ring 410 forms an effective sealing barrier through its own elasticity and tight fitting characteristics, thereby effectively preventing the penetration of external impurities, while reducing the leakage of internal lubricant, and maintaining the sealing and lubrication state of the system.

[0075] For example, the cross section of the first sealing ring 410 may be circular, so that the first sealing ring 410 has a better extrusion deformation effect and achieves a tight sealing of the sealing space.

[0076] Further, refer to Figure 2 As shown, in some embodiments, the sealing structure 400 further includes a second sealing ring 420 , which is located on top of the first sealing ring 410 . The second sealing ring 420 can further improve the sealing between the dust cap 300 and the base body 100 .

[0077] In addition, the inner edge of the second sealing ring 420 is interference fit with the scraper arm shaft 200, that is, the inner diameter of the second sealing ring 420 is slightly smaller than the outer diameter of the scraper arm shaft 200, thereby generating compression during installation to provide tight assembly and sealing.

[0078] At the same time, in some embodiments, the outer edge of the second sealing ring 420 is located on the circumferential outside of the shaft hole 110, so that the second sealing ring 420 can cover the shaft hole 110, and the bottom surface of the second sealing ring 420 is in contact with the top surface of the seat body 100, thereby reducing the probability of rainwater and dust entering the interior of the seat body 100.

[0079] The first sealing ring 410 and the second sealing ring 420 can provide a double seal at the top of the base 100, thereby improving the sealing effect of the sealing structure. In addition, if one of the first sealing ring 410 and the second sealing ring 420 fails, the other can still provide a certain sealing effect, thereby improving the reliability of the system.

[0080] Furthermore, if Figure 2 and Figure 3 As shown, in some embodiments, the sealing structure 400 further includes a third sealing ring 430. A mounting groove 210 is provided on the outer wall of the scraper arm shaft 200, and the third sealing ring 430 is disposed in the mounting groove 210. The third sealing ring 430 directly contacts the scraper arm shaft 200, thereby reducing the probability of rainwater flowing into the base body 1000 along the scraper arm shaft 200. In addition, the third sealing ring 430 can rotate with the scraper arm shaft 200. This design ensures that the scraper arm shaft 200 maintains a good sealing state even in harsh environments when rotating, preventing dust and moisture from directly invading the gap between the scraper arm shaft 200 and the mounting sleeve 310.

[0081] The third sealing ring 430 is sandwiched between the mounting sleeve 310 and the second sealing ring 420. This arrangement optimizes the interaction between the different sealing rings. Specifically, by adding the third sealing ring 430 below the second sealing ring 420, not only is the sealing effect between the sealing rings enhanced, but it also reduces the impact of vibration and displacement generated by the rotation of the scraper arm shaft 200 on the sealing structure, thereby improving the overall stability and reliability of the system.

[0082] It should be noted that the third sealing ring 430 may be a “C-shaped” sealing ring with an opening, so that the third sealing ring 430 can be assembled in the installation groove 210 .

[0083] It should also be noted that when assembling the support base 10, the bearing 500 can be first press-fitted into the base body 100, the scraper arm shaft 200 can then be installed into the bearing hole, and then the first and second sealing rings 410, 420 can be sequentially assembled, and finally the third sealing ring 430 can be press-fitted. After the sealing structure is assembled, the dust cap 300 can be press-fitted. Lubricating grease can be applied to the bearing 500, the first sealing ring 410, the second sealing ring 420, and the third sealing ring 430 to improve smooth rotation.

[0084] On the other hand, the present application also provides a wiper blade, which includes a support base 10 and a wiper arm. The support base is the support base described in the above embodiment; the wiper arm is mounted on a wiper arm shaft 200 of the support base 10, with the wiper arm and the support base having a dust cap 300 spaced apart. The wiper arm rotates synchronously with the wiper arm shaft 200. Because the wiper blade of the present application includes the support base 10, it also has the advantages of smooth rotation and low abnormal noise.

[0085] On the other hand, the present application also provides a vehicle, an embodiment of which includes the above-mentioned wiper. Since the wiper has the advantages of good rotation smoothness and low abnormal noise, the vehicle with the wiper can significantly improve the user's driving and riding experience.

[0086] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A wiper support, characterized in that: include: The seat body (100) has an axial hole (110); A scraper arm shaft (200) is rotatably disposed in the shaft hole (110); A dust cap (300) is fixedly sleeved on the scraper arm shaft (200) and maintains a preset gap with the base body (100); A sealing structure (400) is provided between the dust cap (300) and the base (100) to seal a preset gap between the dust cap (300) and the base (100).

2. The wiper support according to claim 1, characterized in that: The dust cap (300) comprises a mounting sleeve (310) and a shielding skirt (320), wherein the shielding skirt (320) is arranged on the circumferential outer side of the mounting sleeve (310), and the mounting sleeve (310) is fixedly sleeved on the scraper arm shaft (200), and the bottom edge of the shielding skirt (320) is lower than the top end surface of the base (100), and a preset gap is provided between the shielding skirt (320) and the base (100).

3. The wiper support according to claim 2, characterized in that: The mounting sleeve (310) has a first inner hole (311) and a second inner hole (312) that are connected to each other. The first inner hole (311) is used for interference fit with the scraper arm shaft (200). The second inner hole (312) is located at one end of the mounting sleeve (310) close to the seat body (100), and the aperture of the second inner hole (312) gradually increases in a direction from away from the seat body (100) to close to the seat body (100).

4. The wiper support according to claim 3, characterized in that: The shielding skirt (320) comprises a connecting section (321) and a shielding section (322), wherein the connecting section (321) is arranged on the circumferential outer side of the mounting sleeve (310), and the shielding section (322) is arranged at an angle to the connecting section (321) and is used to cover the upper end of the seat body (100); A preset vertical gap is maintained between the connecting section (321) and the top end surface of the seat body (100), and a preset radial gap is maintained between the blocking section (322) and the outer edge of the seat body (100).

5. The wiper support according to any one of claims 2 to 4, characterized in that: It also includes a bearing (500), the scraper arm shaft (200) is arranged in the seat body (100) through the bearing (500), and the sealing structure (400) is arranged between the dust cap (300) and the bearing (500).

6. The wiper support according to claim 5, characterized in that: A sealed space is formed between the hole wall of the shaft hole (110), the outer wall of the scraper arm shaft (200), and the top wall of the bearing (500), and the sealing structure (400) includes a first sealing ring (410), which is interference-fitted in the sealed space.

7. The wiper support according to claim 6, characterized in that: The sealing structure (400) further includes a second sealing ring (420), which is located on top of the first sealing ring (410), the inner edge of the second sealing ring (420) is interference-fitted with the scraper arm shaft (200), the outer edge of the second sealing ring (420) is located on the circumferential outside of the shaft hole (110), and the bottom surface of the second sealing ring (420) is in abutment with the top surface of the seat body (100).

8. The wiper support according to claim 7, characterized in that: The sealing structure (400) further includes a third sealing ring (430); a mounting groove (210) is provided on the outer wall of the scraper arm shaft (200); the third sealing ring (430) is disposed in the mounting groove (210); and the third sealing ring (430) is clamped between the mounting sleeve (310) and the second sealing ring (420).

9. A wiper blade, characterized in that: include: A support seat (10), wherein the support seat is the support seat according to any one of claims 1 to 8; The wiper arm is sleeved on the wiper arm shaft (200) of the support seat (10) and rotates synchronously with the wiper arm shaft (200).

10. A vehicle, characterized in that: include: The wiper blade according to claim 9.

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