Surface cleaning equipment easy to clean

Abstract

The invention provides easy-to-clean surface cleaning equipment. The easy-to-clean surface cleaning equipment comprises a surface cleaning device with a floor brush and a base for placing the floor brush, the floor brush is provided with a cleaning assembly, a dirt suction opening and a dirt scraping piece, a certain distance a is formed between the front end of the cleaning assembly and the front end of the base, the floor brush is further provided with a roller brush cover, the roller brush cover comprises a suspended end, the suspended end covers the upper portion of the cleaning assembly, and the floor brush further comprises an elastic shielding cover at least covering part of the distance a. The elastic shielding cover comprises a shielding part, the shielding part, the base and the suspended end are matched to form a cleaning cavity containing the cleaning assembly therein, a ventilation opening is formed in the upper portion of the cleaning cavity, the ventilation opening is formed in the suspended end and / or the shielding part, dirty liquid is prevented from being thrown out of the ventilation opening or the base, circulation of airflow of the cleaning cavity and the outside is guaranteed, and the drying effect is improved. Efficient self-cleaning and drying of the cleaning assembly are achieved, and the surface cleaning equipment is more intelligent and humanized.

Description

Technical Field

[0001] This invention belongs to the field of cleaning appliance technology, and specifically provides a surface cleaning device. Background Technology

[0002] As people's living standards improve, surface cleaning equipment is gradually entering people's daily lives, providing convenience for cleaning floors. Surface cleaning equipment generally includes a surface cleaning device with a floor brush, a water supply system, and a vacuum system. The floor brush is equipped with cleaning components, the water supply system wets the cleaning components, the cleaning components rotate to wipe and clean the floor, and the vacuum system sucks up the cleaned dirt. While this solves the burden of cleaning floors, the cleaning components become dirty after cleaning, creating a cleaning hassle for customers. Therefore, industry technicians also equipped the cleaning components with a base. The front end of the base is usually equipped with a cleaning tank. The floor brush of the surface cleaning device is placed on the base, and the cleaning components are located in the cleaning tank. The rotating cleaning components can perform self-cleaning. During automatic cleaning, if the front end of the cleaning components is too close to the front end of the base, that is, if the gap between the front end of the cleaning components and the front end of the base is small and the front end of the base is also low, the dirt can easily be thrown out from the front end of the base and contaminate the ground. In order to improve the self-cleaning effect of the cleaning components, a reverse process of the cleaning components is added during the rotation of the cleaning components. However, during the reverse process of the cleaning components, the dirt is more likely to be thrown out from the gap between the front end of the roller brush cover and the front end of the base, especially when the roller brush cover is short. By making the gap between the front end of the cleaning component and the front end of the base larger, the dirt is less likely to be thrown out. Furthermore, when the suction fan is working, it facilitates airflow exchange with the outside environment, resulting in better drying of the cleaning component. This significantly shortens the drying process, allowing the automatic cleaning and drying process to be completed within 30 minutes. To further improve the drying speed of the cleaning component, a hot air device is generally installed inside the base. For example, Chinese Patent CN202210409654.4 discloses a cleaning machine drying system, which includes a tray supporting the cleaning machine head, the tray including a bearing surface, positioning grooves for positioning the cleaning machine's wheels, a cleaning tank, and a surrounding wall around the bearing surface, as well as a drying... The drying component includes an air inlet component, a hot air duct with a drying heater, and a hot air outlet connected to the hot air duct. An air passage gap is formed between the roller brush and the cleaning tank. The hot air outlet is located on the front enclosure wall and faces the air passage gap. The suction nozzle of the cleaning machine is connected to the air passage gap. The hot air discharged from the hot air outlet is blocked by the bottom scraper of the cleaning machine head through the air passage gap and flows to the inside of the roller brush and the suction nozzle. Although this technical solution adds a hot air heater, the gap between the brush and the enclosure wall, if the gap is too large, will cause the hot air blown out of the base to dissipate quickly in the gap between the two, resulting in a limited increase in the drying speed of the cleaning component. It still cannot allow the cleaning component to complete the drying process within a few minutes.

[0003] To prevent wastewater from spilling out of the cleaning tank or base, and to prevent air from the drying device from overflowing, some products have shielding components on the front and sides of the cleaning tank. These shielding components seal the gaps between the roller brush cover and the front and sides of the base, and work with the base to largely isolate the cleaning components from the external environment, thus placing them in a roughly sealed space. For example, patent application No. 202410436756.4, entitled "Cleaning System and Tray," discloses that the tray also includes a first seal and a second seal. The first seal reduces the gap between the sides of the brush and the tray, and the second seal reduces the gap between the front of the brush and the tray, thus reducing the escape of the drying airflow. This improves the drying efficiency of the roller brush and reduces the risk of dirt escaping with the drying airflow. While this solution prevents dirt from being thrown out of the base, it places the cleaning components in a damp and largely enclosed space. Even if hot air blows out from inside the base, the moisture on the cleaning components, although heated to a high temperature and turning into water vapor, cannot be expelled from the enclosed space due to the lack of energy exchange with the outside airflow. It's like the humid weather in a valley, where even with high heat, moisture is still released slowly, resulting in limited improvement in the drying speed of the cleaning components and still poor drying effect. Moreover, the humid environment is more likely to breed bacteria and produce odors, causing new problems for customers. Summary of the Invention

[0004] This invention provides an easy-to-maintain surface cleaning device. By setting an elastic shield with ventilation openings to form a ventilated cleaning chamber, the cleaning components can be efficiently self-cleaned and dried, resulting in a better self-cleaning effect and making the surface cleaning device more intelligent and user-friendly.

[0005] To achieve the above objectives, the present invention provides an easy-to-maintain surface cleaning device, comprising a surface cleaning apparatus with a floor brush and a base for placing the floor brush; the floor brush is provided with a cleaning component, a suction port, and a scraping component, the front end of the cleaning component and the front end of the base are spaced apart by a certain distance 'a', the floor brush is also provided with a roller brush cover, the roller brush cover includes a suspended end that covers the cleaning component, and also includes an elastic shield that covers at least part of the distance 'a', the elastic shield includes a shielding part, the shielding part, the base, and the suspended end cooperate to form a cleaning chamber that accommodates the cleaning component therein, the upper part of the cleaning chamber is provided with a vent, the vent is formed at the suspended end and / or the shielding part.

[0006] Furthermore, the base includes a front baffle located on the front side, the front part of the elastic shield abuts against the front baffle, the shielding part and the suspended end form a first distance b, and the vent is formed by the first distance b, where a > b; or, the base includes a front baffle located on the front side, the front part of the elastic shield abuts against the front baffle, and the vent is disposed on the shielding part, wherein the total area of ​​the vent is smaller than the area of ​​the distance a.

[0007] Furthermore, the inner surface of the suspended end is curved, and the shielding part includes a curved section that matches the shape of the suspended end, with the curved section extending along the shape of the suspended end.

[0008] Furthermore, the shielding part also includes a bent section located behind the curved section, with the ventilation opening disposed on the bent section; or the shielding part also includes a straight section located behind the curved section, with the ventilation opening disposed on the straight section.

[0009] Furthermore, the curved segment extends to partially cover the suspended end to form a circumferential air duct connecting the ventilation opening and the cleaning chamber, with the ventilation opening formed by the radial gap between the rear end of the curved segment and the suspended end; or, the curved segment extends to the suspended end, with the ventilation opening formed by the radial gap between the rear end of the curved segment and the front end of the suspended end; or, the curved segment extends to partially overlap with the suspended end, with the ventilation opening located on the curved segment or the suspended end near the overlap; or, the curved segment extends to partially overlap with the suspended end, with corresponding ventilation openings at the intersection, and the ventilation openings located within the overlap area.

[0010] Furthermore, the base also includes side baffles located on both sides, the side baffles are connected to the front baffle and have gaps with both ends of the cleaning component, and the cleaning chamber is also provided with side vents communicating with the gaps.

[0011] Furthermore, the elastic shield also includes a sliding part located on the rear side of the shielding part and an abutting part located on the front side of the shielding part. The shielding part is slidably disposed on the roller brush cover via the sliding part, and the elastic shield abuts against the front baffle via the abutting part.

[0012] Furthermore, the elastic shield also includes an abutment portion located on the front side of the shielding portion, and the abutment portion is provided with a mounting groove, through which the elastic shield is fixed to the front baffle.

[0013] Furthermore, the base includes a tray and a bottom shell. The tray is fastened onto the bottom shell to form a receiving cavity. The front end of the tray is provided with a cleaning groove arranged along the width direction of the tray. The floor brush is placed on the tray. The cleaning component is located above the cleaning groove. The base also includes a drying device, which is located inside the receiving cavity. The left and right sides of the cleaning groove are provided with side baffles connected to the front baffle. The front baffle has an inner cavity with an opening facing downwards. The inner cavity is connected to the receiving cavity. The inner side wall of the inner cavity is provided with an air guide opening facing the cleaning component. The air vent is located away from the air guide opening.

[0014] The beneficial effects of the technical solution adopted in this invention are:

[0015] By providing an elastic shield that at least partially covers the distance 'a' between the front end of the cleaning component and the front end of the base, the elastic shield includes a shielding part. The shielding part, the base, and the suspended end cooperate to form a cleaning chamber that accommodates the cleaning component. A vent is provided at the upper part of the cleaning chamber, formed at the suspended end and / or the shielding part. This makes it difficult for dirt to be thrown out from the vent, preventing dirt from being thrown out of the base during automatic cleaning of the cleaning component. Even if the cleaning component rotates in both directions during self-cleaning, the dirt will be reversed upon contact with the suspended end and the shielding part due to the shielding of the roller brush cover, greatly reducing the amount of dirt and... The reduced likelihood of dirt being flung out of the vents prevents the possibility of waste liquid being thrown out of the base, while also allowing external airflow to participate in the automatic cleaning process and the drying process of the cleaning components after automatic cleaning. Simultaneously, external airflow can enter the cleaning chamber through the vents, enhancing air circulation between the cleaning chamber and the outside environment. This facilitates further air exchange and circulation between the cleaning chamber and the outside environment when the suction fan is working, thereby accelerating the drying of the cleaning components. When the suction system is not working, hot air can be installed inside the base to further accelerate the drying efficiency of the cleaning components. The water flows through the cleaning assembly and then continues upward to the vent, carrying away the moisture evaporated from the cleaning assembly's bristles. This moisture is then discharged from the cleaning chamber, improving the drying efficiency of the cleaning assembly. Simultaneously, it avoids creating a near-sealed space within the cleaning chamber, where moisture remains even after evaporation, resulting in a humid environment that hinders rapid drying and increases the risk of mold and odor. This solution is not only simple in structure but also easy to use. The advantage lies in the fact that the front of the elastic shield is either suspended or located above the roller brush cover, giving it a certain degree of elasticity or being made of a material with a certain degree of elasticity. This allows for a certain amount of vertical floating space in the front, preventing interference between the floor brush and the elastic shield when it is placed on the base. This facilitates the placement and removal of the surface cleaning device. When the cleaning component rotates under the drive motor, the elastic shield does not generate a large reaction force on the cleaning component, avoiding excessive wear and tear on the drive motor and resulting in increased temperature. At the same time, there is no vibration when the cleaning component rotates for self-cleaning, thus reducing noise. Attached Figure Description

[0016] The following description refers to the accompanying drawings, in which:

[0017] Figure 1 This is one embodiment of the base and elastic shield of the surface cleaning equipment described in this invention;

[0018] Figure 2 This is a schematic diagram of the elastic shield installed on the base in Embodiment 1;

[0019] Figure 3 yes Figure 2 Enlarged structural diagram of section A;

[0020] Figure 4 This is a longitudinal partial cross-sectional view of the cleaning component in the first embodiment in its first state;

[0021] Figure 5 This is a longitudinal partial sectional view of the cleaning component in the second state in Embodiment 1;

[0022] Figure 6 This is a second embodiment of the base and elastic shield in the surface cleaning equipment of the present invention;

[0023] Figure 7 This is Embodiment 1, where the ventilation opening is located on the elastic shield, as described in Embodiment 2;

[0024] Figure 8 This is a longitudinal partial cross-sectional view of the floor brush placed on the base and cooperating with the elastic shield in Embodiment 2;

[0025] Figure 9 This is Embodiment 2, in which the ventilation opening is located on the elastic shield.

[0026] Figure 10 This is Embodiment 3, where the ventilation opening is located on the elastic shield as described in Embodiment 2;

[0027] Figure 11 This is Embodiment Four, which describes the ventilation openings being located on the elastic shield as described in Embodiment Two;

[0028] Figure 12 This is Embodiment 1, where the ventilation opening in Embodiment 3 is formed by the combination of a roller brush cover and an elastic shield.

[0029] Figure 13 This is Embodiment 2, where the ventilation opening in Embodiment 3 is formed by the combination of a roller brush cover and an elastic shield.

[0030] Figure 14 This is a schematic diagram of an elastic shield fixed above the roller brush cover;

[0031] Figure 15 This is a schematic diagram showing the flexible shield rotating to the front of the cleaning component;

[0032] Figure 16 This is a schematic diagram showing the elastic shield moving to the point of contact with the front baffle and the cleaning components in the first position;

[0033] Figure 17This is a schematic diagram showing the elastic shield moving to the point of contact with the front baffle and the cleaning component in the second working position;

[0034] Figure 18 This is another implementation method where the elastic shield is fixed to the roller brush cover.

[0035] The attached figures are labeled as follows:

[0036] 10. Body; 11. Handle; 20. Floor brush; 201. Roller brush cover; 2011. Suspended end; 202. Roller brush; 203. Water distribution component; 204. Scraper; 205. Comb teeth; 206. Floor scraper; 207. Roller brush cavity; 208. Upper housing; 209. Lower housing; 21. Suction port; 30. Base; 301. Bottom housing; 302. Side baffle; 303. Front baffle; 3031. First wall; 3032. Second wall; 304. Tray; 305. Cleaning tank; 306. Cleaning cavity; 307. Outlet Air vent; 308, charging base; 310, receiving cavity; 320, side air duct; 330, inner cavity; 340, circumferential air duct; 40, elastic shield; 401, ventilation opening; 402, shielding part; 4021, straight section; 4022, curved section; 403, contact part; 404, sliding part; 4041, sliding rod; 405, side baffle; 406, side ventilation opening; 407, shielding piece; 408, bending part; 409, side rib; 50, waste bin; 60, clean water tank; 70, ventilation gap; 90, airflow. Detailed Implementation

[0037] Those skilled in the art should understand that the embodiments described below are merely preferred embodiments of this application, and these preferred embodiments are only used to explain the technical principles of this application and are not intended to limit the scope of protection of this application.

[0038] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "top," "bottom," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] As the surface cleaning device described in this invention, such as Figures 1 to 18As shown, the surface cleaning device includes a floor brush 20 and a base 30 for placing the floor brush 20. The surface cleaning device also includes a body 10 hinged to the floor brush 20, a suction system, and a water supply system. The floor brush 20 is equipped with a cleaning component, a suction port 21, and a scraping component. The suction system includes a suction fan (not shown), a sludge container 50, and a suction channel (not shown) connecting the suction port 21 and the sludge container 50. The water supply system includes a clean water tank 60 for supplying water to the cleaning component and a water pump (not shown). The front end of the cleaning component is spaced apart from the front end of the base 30. a. The floor brush 20 is also provided with a roller brush cover 201. The roller brush cover 201 includes a suspended end 2011, which covers the cleaning component. It also includes an elastic shield 40 with a length that at least partially covers the distance a between the front end of the cleaning component and the front end of the base. The elastic shield 40 includes a shielding part 402. The shielding part 402, the base 30, and the suspended end 2011 of the roller brush cover 201 cooperate to form a cleaning cavity 306 that accommodates the cleaning component. The upper part of the cleaning cavity 306 is provided with a vent 401, which is formed in the suspended end 2011 and / or the shielding part 402.This technical solution is simple in structure and easy to implement. Because the vent is located at the top of the cleaning chamber, dirt is not easily thrown out. This ensures that during the automatic cleaning and drying of the cleaning components, dirt (including not only granular or clay-like solid dirt, but also dirty liquids such as sewage, spilled soy sauce, beverages, and juices) will not be thrown out of the cleaning chamber. Water or cleaning fluid can be effectively utilized to clean the cleaning components with minimal water, ensuring self-cleaning effectiveness and preventing contamination of the ground outside the base. Furthermore, because the vent is located at the top of the cleaning chamber, it allows for effective airflow exchange with the outside environment. Even when a drying device is installed inside the base, when the suction fan is not running, the hot air must first pass through the cleaning components before reaching the top of the cleaning chamber. This allows the hot air to first dry the moisture on the tufts of the cleaning components before carrying it to the top of the cleaning chamber to evaporate through the vent. This reduces the loss of hot air directly discharged from distance a, thereby improving drying efficiency and reducing drying time. When the vacuum cleaner is started, cold air from the outside continuously enters the cleaning chamber through the vents. Since the vents are only located at the top of the cleaning chamber, and the shielding part covers most or even all of the gap between the cleaning components and the base, the amount of cold air entering the cleaning chamber is reduced (compared to when the gap a is completely open without the elastic shield). The incoming cold air first passes over the surface of the cleaning components and then mixes with the hot air in the base. This not only removes some of the moisture from the cleaning components and their bristles, but also, because the amount of cold air entering is reduced, the temperature of the hot air does not drop too quickly, and the temperature of the mixed air does not drop too low. In this way, the hot air continuously circulates with the outside, thereby improving the drying efficiency. In addition, when the floor brush is placed on the base, it will not collide or interfere with the elastic shield, making it easy to put on and take off the surface cleaning device. When the cleaning components are rotated by the drive motor, the elastic shield will not generate a large reaction force on the cleaning components, avoiding excessive consumption of the drive motor of the cleaning components and resulting in a rise in temperature. At the same time, there is no vibration when the cleaning components rotate for self-cleaning, thus reducing noise.

[0041] In this invention, Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 16 , Figure 17 as well as Figure 18 The dotted line with arrows represents airflow 90, and the arrows indicate the approximate direction of airflow when the suction fan is working.

[0042] In this invention, the cleaning component can be formed by one or two roller brushes. The roller brush includes a circular roller, and a cleaning cloth is wrapped or attached to the circular roller. The cleaning cloth has bristles. For a single roller brush, the front end of the cleaning component refers to the portion located in front of the central axis of the cleaning component. Alternatively, the cleaning component can be a tracked roller brush, including two circular rollers and a support frame disposed between them. The two rollers are mounted on the support frame and are wrapped with a removable cleaning cloth. The cleaning cloth has bristles to facilitate the removal and replacement of the roller brush cloth. For the tracked roller brush, after it is installed on the floor brush, one roller is located close to the floor brush, and the other roller is located away from the floor brush, that is, on the outside of the floor brush. In this structure, the front end of the cleaning component refers to the portion in front of the central axis of the roller located on the outside of the floor brush. The scraping component can include a scraper, a comb, or a scraper and a comb disposed below the scraper. The clean water tank and / or water pump can be disposed on the machine body or inside the floor brush.

[0043] Example 1

[0044] As the surface cleaning device described in this invention, such as Figures 1 to 5As shown, the device includes a base 30 and a surface cleaning device placed on the base 30. The surface cleaning device includes a floor brush 20, a body 10 hinged to the floor brush, a water supply system, and a suction system. The water supply system includes a clean water tank 60 and a water pump (not shown in the figure). The suction system includes a suction fan (not shown in the figure), a sludge container 50, a suction port 21, and a suction pipe (not shown in the figure) connecting the suction port 21 and the sludge container 50. The floor brush 20 is provided with a cleaning component and a detachable roller brush cover 201 located above the cleaning component. The roller brush cover 201 includes a suspended end 2011. In this embodiment, the cleaning component includes a roller brush 202 and a side plate (not shown in the figure) connected to the roller brush 202. The scraping component includes a scraper 204 and comb teeth 205. The floor brush 20 includes an upper housing 208 and a lower housing 209. The lower housing 209 has... The device has a roller brush cavity 207 at its front and a receiving cavity (not shown in the figure) at its rear. The upper housing 208 is fastened to the receiving cavity of the lower housing 209. The front side wall of the lower housing 209 is provided with a water distribution component 203, a sludge scraper, and a sludge suction port 21 facing the cleaning component from top to bottom. A floor scraper 206 is also provided below the sludge suction port 21. The floor scraper 206 is located at the front end of the lower housing. The drive motor (not shown in the figure) that drives the roller brush of the cleaning component to rotate is located inside the floor brush. One end of the sludge suction pipe is connected to and communicates with the sludge suction port 21. A part of the sludge suction pipe is located in the receiving cavity, and the other end extends upward from the receiving cavity and communicates with the sludge collection bucket on the machine body. The cleaning component is installed in the roller brush cavity 207. The roller brush cover 201 includes a suspended end 2011, which at least partially covers the top of the cleaning component. The base 30 includes a tray 304 for placing the floor brush 20 and a bottom shell 301. The tray 304 is fastened to the bottom shell 301 to form a receiving cavity 310. The front part of the tray 304 is provided with a cleaning groove 305, and the rear part of the tray 304 is also provided with a charging base. The front end of the tray 304 is also provided with a front baffle 303 and side baffles 302 located on the left and right sides of the cleaning groove connected to the front baffle 303. The front baffle 303 has a downward-opening inner cavity 330, with the opening of the inner cavity 303 facing the receiving cavity. The inner wall of the inner cavity 303, namely the first wall 3031, is connected to the tray 304, and the outer side of the inner cavity 303... The wall, namely the second wall 3032, is connected to the bottom shell 301 so that the inner cavity 303 and the receiving cavity 310 are connected and communicated. The front end of the cleaning component and the front end of the base 30 have a certain distance a, that is, there is a distance a between the front end of the roller brush 202 and the inner side wall of the front baffle 303. The projection of the suspended end 2011 of the roller brush cover 201 on the horizontal plane is at most flush with the projection of the front end of the cleaning component on the horizontal plane. That is, at least a part of the front end of the cleaning component is not covered by the roller brush cover and is exposed, which increases the contact area between the cleaning component and the outside world, facilitates ventilation, improves the drying efficiency of the cleaning component, and improves the drying effect.In this embodiment, the length of the cleaning tank is greater than the length of the roller brush. The floor brush is placed on the tray of the base, and the roller brush is located above the cleaning tank, with its projection falling inside the cleaning tank. The bristles of the roller brush and the cleaning tank form a ventilation gap 70. There is a certain gap between the left and right sides of the roller brush 202 and the side baffles 302 of the base. The front part of the central axis of the roller brush 202 protrudes from the front of the suspended end 2011, so that the front end of the roller brush 202 is not completely covered by the roller brush cover 201. It also includes an elastic shield with a length at least covering the length of the cleaning component. The cover 40, or elastic shield, is longer than the roller brush. The elastic shield 40 includes a shielding portion 402. The shielding portion 402, the base 30, and the suspended end 2011 of the roller brush cover 201 cooperate to form a cleaning chamber 306 that houses the cleaning components. A vent 401 is provided at the upper part of the cleaning chamber 306. In this embodiment, the elastic shield 40 includes a shielding portion 402 and an abutting portion 403. The vent 401 is formed on the shielding portion 402 of the elastic shield 40 and is located near the suspended end 2011. The abutting portion 403 is located in front of the shielding portion 402 and is mounted on the front baffle 303. The shielding portion 402 extends towards the roller brush cover 201. The abutting portion 403 has a mounting groove; in this embodiment, the mounting groove is a snap-fit ​​groove. The upper end of the front baffle 303 extends into the snap-fit ​​groove, thereby fixing the elastic shield 40 to the front end of the base 30. Understandably, the front baffle can also be integrally molded with the tray, meaning that the top of the front end of the base can be directly inserted into the slot to fix the elastic shield to the front end of the base.

[0045] In this embodiment, the roller brush 202 can move back and forth. A power component (not shown in the figure) is installed inside the brush. The power component drives both sides of the roller brush to move back and forth simultaneously. Therefore, when the surface cleaning device is placed on the base to automatically clean the roller brush, the roller brush 202 has two working positions. During the automatic cleaning process, the roller brush can be moved back and forth by controlling the power component, allowing it to rotate and clean in either the first or second working position. Figure 4 As shown, the roller brush is in the first working position. At this time, the roller brush 202 is in contact with the scraper 204. The scraper and / or comb teeth continuously scrape the bristles of the rotating cleaning component, scraping off the dirt on the cleaning component, thereby facilitating the suction fan to suck the dirt into the suction port, and then collect it into the wastewater tank. Figure 5As shown, the roller brush is in the second working position, with a gap between the roller brush and the scraper 204. The distance between the cleaning component and the suction port is increased. The cleaning component is moved back and forth by the power component, which adjusts the working position of the cleaning component. During the movement of the cleaning component, the dirt also moves with the cleaning component. Hair and other tangled objects wrapped around the cleaning component and / or comb teeth are also pulled, thus loosening the dirt or hair and other tangled objects. This can effectively peel the hair and other tangled objects wrapped around the roller brush from the roller brush, or make the dirt in the suction port and / or roller brush cavity easier to rinse off due to the loosening. When the cleaning component moves to the second working position with a larger gap with the suction port, there is no obstruction from the scraper and / or comb teeth, so the dirt in the roller brush cavity can be better sucked into the suction port and then sucked into the collection bucket. There is no need for manual handling by the customer. At the same time, the suction effect is better, so the self-cleaning effect of the cleaning component is better and the cleaning is more thorough. When the cleaning component operates in the first and second working positions, intermittently changing the rotation direction of the cleaning component is more effective in cleaning dirt. The change in the rotation direction also facilitates the action of the scraper, causing the fibers to be scraped in the opposite direction, thus changing the state of the roller and making it upright, making it easier to dry. For example... Figure 1The front, back, left, and right directions are defined as shown, with the cleaning component located at the front end of the base. The contact part 403 is located at the front of the elastic shield 40. In this embodiment, the suspended end 2011 of the roller brush cover is arc-shaped. The shield 402 includes a straight section 4021 and a curved section 4022. The curved section 4022 is connected to the contact part 403. The inner surface of the curved section 4022 is arc-shaped and extends along the extension direction of the suspended end 2011 of the roller brush cover. The front of the straight section 4021 is provided with a narrow notch, and the notch extends along the length direction of the elastic shield 40. The straight sections on both sides of the notch abut against the front end 2011 of the roller brush cover 201, so that the notch does not contact the roller brush cover 201 to form a slender ventilation opening 401. The ventilation opening 401 is located at the rear end of the shield 402 and near the front end 2011 of the roller brush cover 201, that is, near the longitudinal axis of the roller brush. When the roller brush rotates, the sewage flows along the roller under the action of centrifugal force. The brush is thrown out tangentially, that is, perpendicular to the longitudinal axis. Since the vent is located near the longitudinal axis and not on the trajectory of the dirt, it is difficult for the dirt to enter the vent and be thrown out from there. Moreover, the vent 401 is located at the top of the cleaning chamber 306 and is a certain distance from the roller brush. Therefore, during the automatic cleaning process, the roller brush is driven by the power component to move to the first working position or the second working position, causing the tangled material to loosen. Then, the roller brush rotates under the drive motor. During the rotation, the hair tangled on the roller brush is more easily detached from the roller brush due to centrifugal force. Since the notch is long and narrow, the total area of ​​the vent 401 is smaller than the area of ​​the spacing a, and it is located at the top of the cleaning chamber. Therefore, the hair tangled and other dirt will not be squeezed out of the cleaning chamber from the vent 401, but will move with the roller brush to the suction port and be more easily sucked into the suction port. The shielding portion 402 of the elastic shield 40 is positioned higher than the side baffle 302 and the front baffle 303, and both sides of the shielding portion 302 are open. Therefore, the left and right sides of the shielding portion 402 and the upper end of the side baffle form side ventilation openings 406. Since there is a certain gap between the left and right sides of the roller brush 202 and the side baffle 302 of the base, this gap and the side ventilation opening 406 communicate to form a side air duct 320 communicating with the cleaning chamber 306. Since the side ventilation opening 406 is located on the side and is perpendicular to the rotation direction of the roller brush, dirt such as hair will not escape from the side ventilation opening 406. The extrusion process ensures that the ground near the base is not contaminated. The vent is located at the rear of the shield, allowing the floor brush to float elastically when placed on the base because the shield is located at the free end of the elastic shield. The shield is made of rubber and is inherently elastic, so when the floor brush is placed on the base, the shield deforms, making it easier to insert the floor brush. At the same time, the elastic shield and the roller brush cover are in elastic contact, preventing noise caused by slight vibrations when the cleaning component rotates.

[0046] After automatic cleaning is completed, the suction fan is activated. The suction fan draws the liquid from the cleaning tank or roller brush into the suction port, and then into the waste collection tank. Although the total area of ​​the vents 401 is smaller than the area of ​​the spacing a, the presence of the side vents 406 further increases the area for airflow exchange between the cleaning chamber and the outside. Therefore, the outside airflow enters the cleaning chamber from the side vents 406 on both sides of the roller brush and the vents 401 on the elastic shield 40. As it flows through the side air ducts and ventilation gaps, the airflow is rapidly pressurized due to the narrowness of the side air ducts and ventilation gaps. This rapidly carries the moisture from the cleaning cloth and bristles of the roller brush into the suction port and into the waste collection tank through the suction pipe, improving the drying efficiency of the cleaning cloth and bristles. However, because the total ventilation area of ​​the vents 401 and the side vents is smaller than the ventilation area of ​​the spacing a, if a drying device is installed on the base, hot air blowing out from the base will be trapped before reaching the vents. When passing through vents 401 and 406, the water still needs to pass through the cleaning components and their bristles. This removes the moisture from the cleaning components and their bristles before proceeding to the vents and side vents to drain the water from the cleaning chamber. When the vacuum blower is working, the outside airflow enters the cleaning chamber through the vents and side vents, carrying the moisture from the cleaning cloth and its bristles of the cleaning components located above spacing a to spacing a, where it mixes with the hot air blown out from the base for cooling. The airflow entering the cleaning chamber is still less than the airflow blown out from the base, but the air temperature is still higher than the outside cold air. This not only ensures sufficient ventilation area in the cleaning chamber and continuous entry of outside airflow into the cleaning chamber, but also accelerates the flow and energy exchange between the airflow in the cleaning chamber and the outside airflow. The vacuum blower can carry the mixed air to the suction port, carrying the moisture from the cleaning cloth and its bristles of the cleaning components to the suction port and into the sludge collection bucket. Therefore, the drying efficiency of the cleaning cloth and bristles of the cleaning components is improved.

[0047] In this embodiment, the surface cleaning device is a floor scrubber. The surface cleaning device includes a water supply system, a vacuuming system, a body 10, and a floor brush 20. The lower part of the body 10 and the rear part of the floor brush 20 are pivotally connected, and the upper end of the body 10 is connected to a handle via a handle 11. A wastewater tank 50 and a clean water tank 60 are respectively provided at the front and rear of the body 10.

[0048] In this embodiment, the cleaning component consists of a single roller 202 fitted with a cleaning cloth, the outer surface of which has tufts. The surface cleaning device has a water supply system that provides clean cleaning water or liquid to the cleaning component to wet the cleaning cloth, thereby enabling the roller and cleaning cloth to rotate under the drive of the motor, thus allowing the cleaning cloth and its tufts to continuously scrub the floor. After prolonged use, the tufts and the entire cleaning cloth will become dirty and need to be placed on the base 30 for self-cleaning. After self-cleaning, to prevent the tufts from becoming moldy due to moisture, the cleaning cloth and tufts are generally dehydrated and dried, or the cleaning cloth and tufts are dehydrated and dried simultaneously with the self-cleaning process. The floor brush is equipped with a scraper, a water spray nozzle, and a suction port. When the surface cleaning device performs self-cleaning, it is placed on the tray of the base, with the floor brush on the tray. The auxiliary wheel of the floor brush is set in the limiting groove on the tray so that the cleaning component is above the cleaning tank. The water spray nozzle sprays water onto the cleaning component, which rotates under the action of the drive motor. The scraper continuously scrapes the cleaning component, thereby scraping off the dirt or liquid on the cleaning component. The suction system generally includes a vacuum component (such as a blower or air pump) and a suction pipe. The wastewater tank 4 is connected to the suction port 21 through the suction pipe. The suction port 21 is directly opposite the cleaning component. The vacuum component draws air from the wastewater tank 4 to create a negative pressure inside the wastewater tank, thereby allowing the dirt or liquid on the surface to be cleaned, or the dirt or liquid scraped off the cleaning component by the scraper, to be sucked into the wastewater tank 4 through the suction port and suction pipe. At the same time, the cleaning cloth and bristles of the roller brush are dehydrated and dried. The above process is repeated until the self-cleaning process of the surface cleaning device is completed.

[0049] In this embodiment, the base 30 includes a generally flat tray 304, and a charging base 308 is installed at the rear of the tray 304. The charging base 308 is used to support the protrusion on the rear side of the body 10 of the surface cleaning device and to charge the battery inside the body 10.

[0050] In this embodiment, a roller brush cover 201 is detachably mounted on the front of the floor brush 20. The roller brush cover 201 is positioned above the cleaning component to prevent the cleaning component from throwing dirt upwards towards the user or surrounding areas that have already been cleaned during the cleaning process. To prevent the roller brush cover 201 from affecting the cleaning of the cleaning component, the vertical projection of the roller brush cover 201 generally does not extend forward beyond the cleaning component; that is, the cleaning component protrudes forward from the roller brush cover 201 in the front-back direction. During the self-cleaning process of placing the floor brush 20 on the tray 304, there will be a gap between the roller brush cover 201 and the front end of the cleaning tank 305. This gap can easily cause dirt to be thrown out, thereby contaminating the base and the already cleaned surfaces outside the floor brush. In this embodiment, the aforementioned elastic shield 40 is provided. The elastic shield 40 is provided on the front baffle 303, and its shielding part 402 extends towards the roller brush cover 201 and abuts against the front end 2011 of the roller brush cover 201. Understandably, the extension trajectory of the elastic shield 40 can be an arc trajectory, a straight trajectory, or a multi-segment trajectory, as long as the elastic shield 40 can block the gap between the front baffle 303 and the front end of the roller brush. The elastic shield is provided with ventilation openings and side ventilation openings 406, which avoids the cleaning chamber from forming a closed area, thereby preventing the cleaning components from being in a roughly closed and humid environment for a long time, and enhancing the ventilation between the cleaning chamber and the outside. In this embodiment, corresponding side ventilation openings 406 are also provided at the elastic shield 40. The side ventilation openings 406 can introduce outside natural wind from the left and right sides of the elastic shield 40, and the side ventilation openings 406 on both sides of the elastic shield 40 are symmetrically arranged about the base 30, so that the elastic shield 40 can be evenly aired on both sides. Figure 4 and Figure 5 The diagram shows the gas flow direction within the cleaning tank when the suction system draws in air, creating negative pressure at the suction port. From Figure 5 As can be seen, under negative pressure, outside air enters the cleaning chamber through the vent 401 of the elastic shield and simultaneously enters the side air duct through the side vents 406 at both ends of the elastic shield, thus entering the cleaning chamber. Then, it flows downwards along the outer surface of the cleaning cloth of the roller to the ventilation gap between the cleaning component and the bottom wall of the cleaning tank, and finally flows into the suction port 21. In this embodiment, the elastic shield 40 and the front baffle 303 of the tray 304 are independent structures. The contact portion of the elastic shield is installed on the front baffle 303. The shielding portion extends from the contact portion towards the roller brush cover. The shielding portion 402 includes a straight section 4021 connected to the contact portion 403 and a curved section 4022 that abuts against the roller brush cover. The vent 401 is an elongated notch located at the edge of the flat shield. The length of the notch is equal to the width of the roller brush cover, so that the two sides of the notch are engaged with and abut against the two ends of the roller brush cover.

[0051] In this embodiment, the cleaning component moves back and forth a distance of 4mm, and the spacing a is 10mm. This ensures that after the cleaning component moves forward, there is still a certain distance between it and the front end of the base. This prevents the cleaning component from interfering with the base and from hitting the base and causing vibration during rotation. At the same time, it provides circulation space for the air entering the cleaning chamber, ensuring that when the suction fan is working, outside air is continuously drawn into the cleaning chamber through the vent, and that there is a sufficient amount of air to contact the surface of the cleaning component inside the cleaning chamber. It also ensures that the contact area between the cleaning component and the incoming air is large enough and the contact frequency is higher when the cleaning component rotates, thereby quickly removing moisture from the cleaning component, improving the drying efficiency of the cleaning component, and improving the drying effect of the cleaning component. Specifically, the distance the cleaning component moves back and forth can be 3mm, 5mm or 6mm, etc., and the spacing 'a' can also be 11mm, 12mm, 13mm, 14mm or 15mm, etc. The main requirement is that the spacing is appropriate to allow sufficient ventilation to flow through the roller brush and its bristles, or that the ventilation area in contact with the roller brush and its bristles is sufficient to allow for rapid drying, and to ensure that the roller brush does not interfere with the elastic sealing cover or front baffle when it moves back and forth.

[0052] In this embodiment, the cleaning groove 305 is configured as a square groove to adapt to the structural feature of the floor brush 20, which has a roughly square vertical projection. The cleaning groove 305 is located at the front of the tray 304, corresponding to the structural feature of the cleaning component being located at the front of the floor brush 20. The front baffle 303 at the front end of the tray 304 protrudes upward from the cleaning groove 305, thereby defining the front boundary of the cleaning groove 305; specifically, the surface of the front baffle 303 facing the cleaning groove 305 is curved, that is, the surface of the first wall 3031 of the inner cavity is curved, so as to achieve a smooth transition between the front baffle 303 and the bottom surface of the cleaning groove 305. Correspondingly, side baffles 302 are also provided at the left and right ends of the tray 304, and the two side baffles are formed on the left and right sides for defining the left and right boundaries of the cleaning groove 305. The left and right sides are symmetrically arranged, and the left side, the front baffle 303 and the right side are connected in sequence to form a U-shaped structure. By using a U-shaped edging, the boundary of the cleaning tank 305 can be defined and the probability of dirt from the front and sides of the cleaning components being thrown out can be reduced, while also facilitating the installation of the flexible shield.

[0053] Understandably, the vent 401 of the elastic shield 40 and the side vents 406 on both sides can also adopt a non-uniform air intake method. For example, the strip notch can be set as a non-isosceles trapezoidal notch or a triangular notch, etc.; or the height of the side baffle can be set to be unequal on the left and right sides, or the top shapes of the side baffles on the left and right sides can be inconsistent, etc.; we can also set the vent at the front end of the suspended end 2011 of the roller brush cover 201. The vent can be a narrow, elongated through hole, or multiple through holes can be set at the front end of the suspended end to form a vent. In addition, it can also be at the front end of the suspended end. Multiple notches are provided, and multiple notches are provided at the rear end of the shielding part, so that the ventilation opening is composed of multiple notches on both. Of course, the multiple notches at the rear end of the suspended end and the shielding part can be connected, or the multiple notches at the rear end of the suspended end and the shielding part can be staggered. As long as the total ventilation area of ​​the ventilation opening 401 and / or the side ventilation opening 406 is less than the ventilation area of ​​the spacing a, the amount of external airflow that can enter through the ventilation opening is sufficient, and dirt will not be thrown out or squeezed out from the ventilation opening. Such technical solutions that do not depart from the technical concept of the present invention are all within the protection scope of the present invention, and will not be listed one by one here.

[0054] Of course, it is understandable that the front baffle 303 and the elastic shield 40 can be connected by inserting protrusions and slots; the elastic shield 40 can also be fixed to the front baffle 303 by means of snap-fit ​​connection, etc.; we can also extend the upper end of the front baffle 303 toward the roller brush cover 201 of the cleaning component and abut against the front end of the roller brush cover 201, in which case the front baffle 303 and the elastic shield form an integral structure. Alternatively, the front baffle on the tray can be made of the same material as the elastic shield, thereby integrally molding the elastic shield and the front baffle, thus sealing the gap on the front side of the cleaning tank, so as to avoid the problem of air leakage at the connection between the elastic shield and the front baffle when an additional elastic shield is set. Such technical solutions that do not depart from the technical concept of the present invention are all within the protection scope of the present invention, and will not be listed here.

[0055] Example 2

[0056] The difference between this embodiment and Embodiment 1 is that the structure of the elastic shield is different, and the structure of the base is also different.

[0057] As the surface cleaning device described in this invention, such as Figures 6-11As shown, the structure of the surface cleaning device is the same as that in Embodiment 1, and will not be described in detail here. The base 30 includes a tray 304 and a bottom shell 301. The tray 304 is fastened onto the bottom shell 301 to form a receiving cavity 310. The front end of the tray 304 is provided with a cleaning groove 305 arranged along the width direction of the tray 304. The floor brush 2 is placed on the tray 304. The cleaning components are located above the cleaning groove 305. It also includes a drying device (not shown in the figure). The drying device includes a heating element and a fan. The fan and the heating element are located in the receiving cavity 310. The left and right sides of the cleaning groove 305 are provided with side baffles 302 connected to the front baffle 303. The front baffle 303 has a cavity 330 with an opening facing downward. The cavity 330 communicates with the receiving cavity 310. The interior of the cavity 330... The side wall, i.e., the first wall 3031, is provided with an air guide 307 facing the cleaning component. The vent 401 is located away from the air guide 307. During automatic cleaning, the heating element raises the temperature of the airflow in the receiving cavity. The fan blows the hot airflow in the receiving cavity through the air guide 307 towards the cleaning component. This increases the temperature of the airflow blowing towards the cleaning component's bristles, causing the moisture on the bristles to evaporate and the bristles to dry quickly. Because the vent is located away from the air guide 307, the amount of heat lost from the airflow blown out of 307 is reduced. At the same time, the presence of the vent ensures the exchange and circulation of airflow between the cleaning cavity and the outside, thereby improving the drying efficiency of the cleaning component and the air in the cleaning cavity, so that the cleaning cloth and bristles of the cleaning component can be dried quickly.

[0058] In this embodiment, the elastic shield 40 includes a shielding part 402 and an abutting part 403, such as Figure 7 and Figure 8As shown, the shielding part 402 is located at the rear of the elastic shielding cover 40, and the contact part 403 is located at the front of the elastic shielding cover 40. In this embodiment, the shielding part 402 includes a straight section 4021, a curved section 4022, and a side baffle 405. The curved section 4022 is connected to the contact part 403. The inner surface of the curved section 4022 is arc-shaped and extends along the extension direction of the suspended end of the roller brush cover. The ventilation opening is a plurality of through holes provided on the straight section 4021. These through holes can be strip-shaped holes, square holes, long elliptical holes, or diamond-shaped holes, etc. The plurality of through holes are equidistantly arranged along the length direction of the straight section 4021. The plurality of through holes are located in front of the suspended end of the roller brush cover and close to the suspended end. The side baffle 405 is provided at both ends of the elastic shielding cover and extends downward below the top of the side baffle 302. The side baffle 405 is close to the inner wall of the side baffle 302. There is a gap between the two ends of the elastic shield 40 and the top of the side baffle 302, that is, the side vent 406 is blocked, so that the side baffle 405 and the side baffle 302 form a side air duct 320 located outside the two ends of the elastic shield, to compensate for the flow and energy exchange between the external airflow and the cleaning chamber; the presence of the side baffle 405 can effectively block dirt and hair and other tangled objects that have detached from the tufts of the cleaning component, preventing them from being squeezed out or thrown out from the two ends of the elastic shield; when the suction fan is not started, when the hot airflow heated by the heating element in the receiving chamber blows from the air guide 307 to the cleaning component, it can effectively dry the cleaning component and reduce the loss of the cleaning component from the side vent, while the airflow can enter the cleaning chamber through the side air duct, so that the two ends of the cleaning component can also be effectively cleaned, and can also be effectively dried after cleaning.By setting multiple holes in the straight section, with the total ventilation area of ​​these holes being less than 'a', not only is the ventilation volume between the cleaning components on the floor brush and the outside environment guaranteed, but the ventilation openings are also designed as multiple holes near the roller brush cover, each with a relatively small area. This prevents dirt from being flung out of the holes as the cleaning components rotate, and also prevents tangled hair and other debris from being squeezed out, thus avoiding contamination of the ground near the base. It also prevents hair and other tangled debris from being squeezed out from the gap 'a' between the front end of the cleaning components and the front end of the base (i.e., the front baffle). This allows hair and other tangled debris to be detached from the roller brush and move with the cleaning components to the suction port when the suction fan is working, where they are sucked into the wastewater tank for effective cleaning. Furthermore, after automatic cleaning... After completion, during the drying process when the suction fan starts, due to the small size of the side air duct and the need for the outside airflow to bend before entering, the amount of outside airflow that can enter through the side air duct 320 is small. The total amount of airflow entering the cleaning chamber from the small amount of airflow entering through the side air duct and the airflow entering through the multiple through holes on the straight section is reasonable. When mixed with the hot airflow from the air guide 307, the hot airflow will not decrease rapidly after mixing. Moreover, the operation of the suction fan avoids the loss of hot air from the vent 401 and the side air duct 320, and accelerates the flow rate of the mixed airflow. Therefore, this solution not only ensures the exchange and circulation of airflow between the cleaning chamber and the outside airflow, but also increases the exchange area between the cleaning components and the airflow, and increases the frequency of airflow exchange, thereby improving the drying efficiency of the cleaning components.

[0059] Of course, it is understandable that the elastic shield 40 can also adopt the following structure: the front edge of the base is provided with an elastic shield 40 with an arc-shaped inner surface, and the elastic shield 40 is made of rubber material; or, the shielding part 402 of the elastic shield 40 is an arc-shaped shield, such as... Figure 9 As shown, the shape of the arc-shaped cover is consistent with the shape of the suspended end 2011 of the roller brush cover 201. The rear part of the arc-shaped cover is fitted to the front part of the suspended end of the roller brush cover, and the arc-shaped cover extends along the shape of the roller brush cover 401. The ventilation opening is located in front of the suspended end 2011 of the roller brush cover 201, and the ventilation opening 401 is composed of multiple holes provided at the rear part of the arc-shaped cover; or, the shielding part 402 is an arc-shaped cover, such as... Figure 10As shown, the shape of the arc-shaped cover is consistent with the shape of the suspended end 2011 of the roller brush cover 201, and there is a gap between the arc-shaped cover and the suspended end. The shielding part 402 extends rearward and covers the front part of the suspended end 2011. The vent 401 is located within the coverage area of ​​the two. The rear part of the shielding part 402 is provided with a bent part 408 extending radially from the rear part of the shielding part 402 toward the roller brush cover. The bent part 408 abuts against the front part of the suspended end 2011 of the roller brush cover 201, so that the shielding part 402... A gap exists between the roller brush cover 201 and the vent 401 to form a circumferential air duct 340. The vent 401 is a plurality of through holes located near the bend 408 on the arc-shaped cover. Alternatively, a bend 408 extending radially from the end of the shield 402 can be provided, and the vent can be located on the bend 408. The vent can also be an elongated notch at the end of the bend, a narrow elongated through hole on the bend, or a matrix of multiple elongated holes arranged on the bend. This allows the external airflow entering through the vent 401 to flow along the circumferential air duct 340 into the cleaning chamber. Alternatively, a shield 407 can be provided above the vent 401 of the elastic shield, such as... Figure 11 As shown, the shielding plate 407 extends forward from the rear end of the shielding part to cover the vent. Alternatively, the shielding plate can also extend forward along the shape of the shielding part. Such structures effectively prevent sewage from being thrown out of the through hole during automatic cleaning and ensure effective exchange and circulation between the external airflow and the airflow inside the cleaning chamber. This increases the frequency and amount of airflow exchange between the cleaning chamber and the outside, thereby improving the efficiency of drying the cleaning components. Such solutions that do not depart from the inventive concept of this invention are also within the protection scope of this invention, and will not be listed in detail here.

[0060] In this embodiment, the front baffle 303 includes a first wall 3031 located at the rear, a second wall 3032 located at the front, and left and right walls located on the left and right sides. The tops of the first wall 3031, the second wall 3032, the left wall, and the right wall are connected to form an inner cavity 330 with an opening at the lower end. The air guide 307 is located on the surface of the front baffle 303 facing the cleaning tank 305, that is, on the surface of the first wall 3031 of the inner cavity 330. The elastic shield 40 is located above the air guide 307, and the distance between the elastic shield and the cleaning component is 13mm. This arrangement allows the air discharged from the air guide 307 to... Hot air can directly enter the cleaning chamber, reducing the distance between the airflow discharged from the air vent 307 and the cleaning component. This prevents the air discharged from the air vent 307 from losing temperature rapidly before reaching the cleaning component, ensuring that the airflow entering the cleaning chamber through the vent is no greater than the airflow discharged from the air vent 307. This accelerates the ventilation volume entering the cleaning chamber and the temperature of the mixed air, making it easier to dry the entire cleaning component with a uniformly heated airflow. This quickly achieves the energy exchange between the water vapor and the mixed air on the cleaning component, allowing the cleaning cloth and its tufts on the cleaning component to dry quickly.

[0061] Of course, it is understandable that we can also create square or round holes on the side baffle 405 to form a side ventilation opening 406. The side ventilation opening 406 can also be a notch on the side baffle. When the elastic shield 40 is located on the front side of the floor brush 20 and forms a cleaning chamber with the side baffle, front baffle, and roller brush cover of the base, there are notches on both sides of the side baffle, so that the side baffle will not completely align with the side baffle, thus preventing the cleaning chamber from being blocked on both sides; that is, the side ventilation opening 406 is formed by the notch of the side baffle and the other structures on the side baffle. Of course, it is understandable that the elastic shield can also be fixed in the following way: the lower end of the elastic shield has a slot, which is installed on the front side plate of the base; or, we can provide a slot on the contact part of the elastic shield, and a limiting protrusion is provided on the upper end of the front baffle of the base, which is inserted into the slot, thereby fixing the elastic shield to the base.

[0062] The other structures in this embodiment and their beneficial effects are the same as in Embodiment 1, and will not be described in detail here.

[0063] Example 3

[0064] The difference between this embodiment and Embodiment 2 is the structure of the ventilation opening.

[0065] The surface cleaning device described in the invention includes a surface cleaning apparatus and a base 30, wherein the front end of the base 30 is provided with a front baffle 303, such as... Figure 12As shown, the elastic shield 40 includes an abutting part 403 and a shielding part 402. The abutting part 403 is located at the front of the shielding part 402 and is mounted on the front baffle 303. The rear end of the shielding part 402 extends toward the roller brush cover 201. The shielding part 402 is an arc-shaped plate with the same shape as the roller brush cover. The arc-shaped plate is located on a concentric circle on the outer periphery of the roller brush cover, and its radius is larger than the radius of the roller brush cover. The arc-shaped plate extends rearward to the front end of the suspended end of the roller brush cover. The ends of the two are radially aligned and do not contact each other. The rear end of the shielding part 402 and the front end of the suspended end 2011 of the roller brush cover 201 form a first distance b. The vent 401 is formed by the first distance b. In this embodiment, a is 10mm and b is 4mm. This structure makes it easier to place the brush on the base, while reducing the heat loss of the hot air in the base. It ensures the circulation and energy exchange between the outside air and the air in the cleaning chamber. Moreover, this elastic shield structure is simple and easy to process. This structure is also more conducive to the entry of outside air into the cleaning chamber. The outside airflow can mix with the hot air generated by the drying device in the base more quickly, and the moisture on the cleaning cloth and its bristles of the cleaning component can be quickly removed during the process of being sucked into the suction port in the cleaning chamber. This can improve the drying efficiency of the cleaning component, especially the drying efficiency of the drying device in the base when it is working. During the automatic cleaning of the cleaning assembly, even while the roller brush is rotating forward, we insert a process to reverse the roller brush to ensure that the cleaning cloth and bristles on the cleaning assembly are thoroughly cleaned. During the reverse rotation of the roller brush, because the vent is located at the radial alignment of the shielded part and the suspended end, and the dirt generally flies out tangentially under centrifugal force, the direction of the dirt flight is perpendicular to the direction of the vent. Even if dirt is thrown out at the radial alignment point, it will fly out tangentially along the diameter, i.e., along the suspended end. Since the inner surfaces of the suspended end and the shielded part are arc-shaped and concentric with the center of the cleaning assembly, and because the vent is located above the suspended end, although the direction of the dirt flight is towards the vent, the trajectory of the dirt and the arc surface of the suspended end are always parallel and do not intersect, so the dirt will never reach the vent. When the cleaning assembly rotates forward, the wastewater and dirt follow the forward rotation of the cleaning assembly, which is as follows... Figure 12The clockwise rotation of the cleaning component, along with the forward and backward movement of the cleaning assembly and its forward rotation in the first and second working positions, ensures that even if some dirt or debris detaches from the roller brush due to centrifugal force, or if hair or other tangled material detaches from the roller brush, it will be thrown forward by centrifugal force, that is, thrown towards the arc surface of the roller brush cover or elastic shield and flow along the arc surface into the cleaning chamber, without being thrown out of the vent. When the cleaning assembly rotates in the opposite direction, the dirt and debris follow the cleaning assembly's counter-rotation. Under the action of centrifugal force, the dirt and debris will be thrown backward, also towards the arc surface of the inner wall of the roller brush cover and elastic shield, making it difficult for them to be squeezed out or thrown out from the radial vent. This prevents the ground outside the base from being contaminated and ensures that the cleaning assembly is cleaned more thoroughly, without the phenomenon of hair or tangled material being ejected from the vent.

[0066] Of course, it is understandable that we can also extend the shielding part 402 further rearward, so that the shielding part 402 at least partially covers the portion overlapping the suspended end 2011 in the circumferential direction, and the vent is formed by the gap between the outer wall of the rear end of the shielding part and the circumferential overlap of the roller brush cover, and the circumferential overlap area of ​​the shielding part and the suspended end forms a circumferential air duct 340 connecting the vent 401 and the cleaning chamber 306; or, we can also adopt the following structure, with radially downward extending side ribs 409 provided on both sides of the end of the shielding part 402, and the vent provided in a narrow, elongated notch at the rear end of the shielding part, such as Figure 13 As shown, the side ribs 409 are fitted to both ends of the roller brush cover 201; whenever sewage flies out, it is blocked by the roller brush cover or elastic shield, changes direction, and falls back into the cleaning chamber, where it is sucked away by the suction fan from the suction port. This completely prevents the ground outside the base from being contaminated and also prevents hair and other tangled objects from being squeezed out of the ventilation opening through the circumferential air duct. Furthermore, the cleaning chamber has ventilation openings to ensure ventilation. Such technical solutions that do not depart from the concept of this invention are all within the protection scope of this invention, and will not be listed individually here.

[0067] Of course, it is understandable that the shielding part of the elastic shield can also be made of elastic material, such as hard rubber, or a structure with metal sheets embedded in rubber, etc. The fixing part of the elastic shield is made of the same material as the tray of the base and is integrally injection molded with the base to ensure that it is in elastic contact with the step of the elastic shield and is limited by the step, so as not to generate noise when the cleaning component rotates.

[0068] The other structures in this embodiment and their beneficial effects are the same as in Embodiment 2, and will not be described in detail here.

[0069] Example 4

[0070] The difference between this embodiment and Embodiment 3 is that the elastic shield mounting structure and its location are different.

[0071] The surface cleaning device described in this invention includes a surface cleaning unit and a base. Taking a floor scrubber as an example, the floor scrubber includes a body and a floor brush hinged thereto. The cleaning component includes a single roller brush and a side plate for mounting the roller brush onto the floor brush. One end of the roller brush is connected to a positioning element inside the roller brush cavity, and the other end of the roller brush is fixed to one end of the side plate. The other end of the side plate is detachably mounted on the outer side wall of the floor brush to mount the roller brush inside the roller brush cavity. The floor brush contains a power component that drives the cleaning component to move back and forth. This power component can be a small-power motor and a transmission mechanism respectively located at both ends of the roller brush. The transmission mechanism is detachably connected to both ends of the roller brush. When the two power components rotate, the transmission mechanism drives both ends of the cleaning component to move back and forth synchronously, thereby giving the cleaning component a first position of contact with the scraper blade. Figures 14 to 16 As shown, the power component drives the cleaning assembly forward to a second working position with a gap between it and the scraper, as... Figure 17 As shown, the drive motor that drives the roller brush is built into the roller cylinder. After the cleaning component is in the first or second working position, it can rotate under the drive motor, thus enabling the cleaning component to clean the surface to be cleaned. When the cleaning component is in the first working position, the water supply component supplies water, which can effectively wipe and remove dirt from the surface to be cleaned. When the cleaning component is in the second working position, since the scraper and the roller brush do not collide and there is a gap, it can better complete the dirt suction work, which is more conducive to the collection of solid particles such as dust and soil or dry waste. At the same time, when the surface cleaning device is working, the roller brush can rotate in both directions. The duration of the roller brush rotating in the forward direction is longer than the duration of the roller brush rotating in the reverse direction, and the rotation speed of the roller brush rotating in the forward direction is greater than the rotation speed of the roller brush rotating in the reverse direction. This is more conducive to cleaning the surface to be cleaned and will not allow solid particles such as soil to adhere to the roller brush cavity. It can avoid large particles getting stuck in the roller brush cavity. More importantly, it can prevent hair and other entangled objects from getting tangled on the roller brush. When the ground brush is placed on the base for self-cleaning of the roller brush, the cleaning component also has two working positions, such as Figure 15 and Figure 16 As shown, during the switching between the two positions of the cleaning component's roller brush, it can move the dirt, causing it to loosen and adhere. Alternatively, it can pull and loosen the tangled material scraped on the roller brush and comb teeth. The water supply component provides water rinsing, and then, through the rotation of the roller brush in the first and second working positions, the suction fan works, which can remove dirt or tangled material such as hair from the roller brush. Water rinsing continues, and the removed dirt or tangled material is collected into the wastewater tank through the suction port. This allows for better automatic cleaning of the cleaning component and provides a good cleaning effect.

[0072] In this embodiment, the elastic shield 40 is disposed on the roller brush cover 201, such as... Figures 14 to 16As shown, the elastic shield also includes a sliding part 404 located on the rear side of the shielding part 402 and an abutting part 403 located on the front side of the shielding part 402. The shielding part 402 is slidably disposed on the roller brush cover 201 via the sliding part 404. The sliding part 404 is slidably disposed on the roller brush cover 201 so that the elastic shield 40 can be located above the suspended end 2011 of the roller brush cover 201, or move forward to at least partially shield the front end of the cleaning component and the front end of the base at a distance a, and so that the abutting part 403 abuts against the front baffle 303 and stops at the front baffle. During automatic cleaning, the floor brush of the surface cleaning device is placed on the base. The shielding part 402, the suspended end 2011, and part of the tray structure of the base 30, as well as the front baffle, form a cleaning cavity 306 that encloses the cleaning component. Figure 15 As shown. The sliding part 404 is a sliding rod 4041 disposed at both ends of the shielding part. In this embodiment, the elastic shielding cover is an arc-shaped cover located above the roller brush cover, as shown. Figure 14 As shown, the arc-shaped cover and the suspended end of the roller brush cover are concentrically arranged, and the radius of the arc-shaped cover is larger than the radius of the roller brush cover to ensure a certain distance between them. The roller brush cover has slide rails at both ends. The upper end of the slide rod is fixedly connected to the sliding part 404, and the lower end of the slide rod 4041 is fixed inside the slide rail. A power component is installed inside the roller brush cover, which can drive the slide rod to move along the slide rail of the roller brush cover. This power component can be set separately; however, it is understandable that the power component can also be set inside the receiving cavity of the floor brush, or it can share a power component with the cleaning component. A transmission structure connected to the slide rod is provided, along with a clutch structure, to connect or disconnect the slide rod or roller brush from the power component, thereby controlling the movement of the elastic shield or the roller brush respectively. When the floor brush is placed on the base, as... Figure 16 and Figure 17 As shown, the power component drives the slide rod of the elastic shield to slide along the slide rail until the contact part 403 at the front of the shielding part 402 abuts against the front baffle of the base, so as to cover the front end of the cleaning component and the distance a between the elastic shielding cover 40 and the front baffle of the base. At the same time, the rear part of the shielding part 402 and the suspended end 2011 of the roller brush cover have a circumferential overlapping area. The outer wall of the overlapping area between the rear port of the shielding part 402 and the suspended end 2011 forms a vent 401 arranged radially along the shielding part. The circumferential overlapping area of ​​the two forms a circumferential air duct 340. This structure is more conducive to the placement of the floor brush. At the same time, since the roller brush cover can generally be removed, the elastic shielding cover can also be removed together with the roller brush cover for rinsing, thus ensuring the cleanliness and hygiene of the elastic shielding cover.

[0073] In this embodiment, since the elastic shield is disposed on the roller brush cover and can slide along the roller brush cover, when the surface cleaning device cleans the surface to be cleaned, such as Figure 14 and Figure 15As shown, the roller brush can be briefly reversed. When the roller brush rotates in the reverse direction, the elastic shield 40 can be rotated clockwise along the roller brush cover to the front of the roller brush, or the elastic shield can be moved to contact the surface to be cleaned, such as... Figure 15 As shown, when the roller brush rotates in the reverse direction, the elastic shield prevents the wastewater from splashing onto the already wiped surface and causing secondary contamination. Instead, the wastewater is blocked by the elastic shield and returns to the roller brush or the surface near the roller brush, where it is wiped again and then sucked into the suction port by the suction fan. If the roller brush is entangled with debris, a power component can be used to move the roller brush back and forth, then stop it at the first and second working positions before rotating it in both directions. This allows the debris to be untangled from the roller brush and sucked into the suction port by the suction fan. In this case, a gripping structure or suction cup structure can be installed on the contact part to fix the elastic shield to the surface to be cleaned, forming a cleaning chamber with the surface to be cleaned and the roller brush cover. Alternatively, after the ground brush is placed on the base, the elastic shield can be adsorbed onto the front baffle by the suction cup structure.

[0074] In this embodiment, when the floor brush is placed on the base for self-cleaning, dirt or tangled hair will not be thrown out of the vents, nor will it be thrown out of the base and contaminate the ground. When drying the cleaning components, the airflow inside the cleaning chamber is constantly exchanged with the outside, thereby accelerating the flow rate of the drying airflow and increasing the frequency of exchange. Not only can the water on the cleaning components be quickly removed, but the water inside the cleaning chamber is also effectively drawn to the suction port and collected in the wastewater tank along with the airflow, ensuring the cleaning effect and improving the drying efficiency.

[0075] Of course, it's understandable that we could also install two sets of sliding rods on the shielding part, such as... Figure 18 As shown, two sets of sliding rods are respectively positioned at the rear and middle of the shielding part to better support the elastic shielding cover and drive its movement; thus controlling the stable back-and-forth movement of the roller brush. Alternatively, the arc-shaped cover can be fitted snugly to the roller brush cover, with the ventilation opening positioned at the rear of the shielding part of the arc-shaped cover. A guide groove is provided on the roller brush cover, and guide protrusions are provided on both sides of the rear end of the arc-shaped cover. The guide protrusions are located within the guide groove and slide along it. When the floor brush is placed on the base, the power component drives the arc-shaped cover to move along the extension direction of the roller brush cover. The arc-shaped cover moves until it covers the distance between the cleaning component and the front baffle of the base, and the stop part abuts against the front baffle. The ventilation opening is then located at the front end of the shielding part of the roller brush cover and protrudes from its front end. Of course, the ventilation opening can also be partially exposed. Such solutions that do not depart from the concept of this invention are also within the protection scope of this invention, and will not be listed in detail here.

[0076] The other structures in this embodiment and their beneficial effects are the same as those in Embodiment 3, and will not be described in detail here.

[0077] The technical solutions of this application have been described in conjunction with the preferred embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of this application is not limited to the above preferred embodiments. Without departing from the technical principles of this application, those skilled in the art can disassemble and combine the technical solutions in the above preferred embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this application will fall within the scope of protection of this application.

Claims

1. An easy-to-maintain surface cleaning device, comprising a surface cleaning apparatus with a floor brush and a base for placing the floor brush; the floor brush is provided with a cleaning component, a suction port, and a scraping component, the front end of the cleaning component and the front end of the base are spaced apart by a certain distance 'a', and the floor brush is further provided with a roller brush cover, the roller brush cover including a suspended end that covers the cleaning component, characterized in that, It also includes an elastic shield that covers at least a portion of the spacing a, the elastic shield including a shielding part, the shielding part, a base and a suspended end cooperating to form a cleaning chamber that accommodates the cleaning components therein, the upper part of the cleaning chamber is provided with a vent, the vent is formed at the suspended end and / or the shielding part.

2. The surface cleaning equipment according to claim 1, characterized in that, The base includes a front baffle located on the front side, the front part of the elastic shield abuts against the front baffle, the shielding part and the suspended end form a first distance b, and the vent is formed by the first distance b, where a>b.

3. The surface cleaning equipment according to claim 1, characterized in that, The base includes a front baffle located on the front side, the front part of the elastic shield abuts against the front baffle, and the vent is provided on the shield, wherein the total area of ​​the vent is smaller than the area of ​​the spacing a.

4. The surface cleaning equipment according to claim 2 or 3, characterized in that, The inner surface of the suspended end is curved, and the shielding part includes a curved section that matches the shape of the suspended end, and the curved section extends along the shape of the suspended end.

5. The surface cleaning equipment according to claim 4, characterized in that, The shielding part also includes a bent section located behind the curved section, and the ventilation opening is disposed on the bent section; or the shielding part also includes a straight section located behind the curved section, and the ventilation opening is disposed on the straight section.

6. The surface cleaning equipment according to claim 4, characterized in that, The curved section extends to partially cover the overhanging end to form a circumferential air duct connecting the vent and the cleaning chamber. The vent is formed by the radial gap between the rear end of the curved section and the overhanging end.

7. The surface cleaning equipment according to claim 4, characterized in that, The curved section extends to the suspended end, and the ventilation opening is formed by the radial gap between the rear end of the curved section and the front end of the suspended end; or, the curved section extends to overlap with the suspended end, and the ventilation opening is set on the curved section or the suspended end near the overlap; or the curved section extends to overlap with the suspended end, and the two are respectively provided with corresponding ventilation openings, and the ventilation openings are located in the overlap area.

8. The surface cleaning equipment according to claim 2 or 3, characterized in that, The base also includes side baffles on both sides, which are connected to the front baffle and have gaps with both ends of the cleaning component. The cleaning chamber is also provided with side vents communicating with the gaps.

9. The surface cleaning device according to claim 2 or 3, characterized in that, The elastic shield also includes a sliding part located on the rear side of the shielding part and an abutting part located on the front side of the shielding part. The shielding part is slidably disposed on the roller brush cover via the sliding part, and the elastic shield abuts against the front baffle via the abutting part; or, the elastic shield also includes an abutting part located on the front side of the shielding part, and the abutting part is provided with a mounting groove, and the elastic shield is fixed to the front baffle via the mounting groove.

10. The surface cleaning device according to claim 2 or 3, characterized in that, The base includes a tray and a bottom shell. The tray is fastened onto the bottom shell to form a receiving cavity. The front of the tray is provided with a cleaning groove arranged along the width direction of the tray. The floor brush is placed on the tray. The cleaning component is located above the cleaning groove. The base also includes a drying device, which is located inside the receiving cavity. The left and right sides of the cleaning groove are provided with side baffles connected to the front baffle. The front baffle has an inner cavity with an opening facing downwards. The inner cavity communicates with the receiving cavity. The inner cavity wall is provided with an air guide opening facing the cleaning component. The air vent is located away from the air guide opening.

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