Surface cleaning equipment

Abstract

The invention discloses surface cleaning equipment which comprises a surface cleaning device, the surface cleaning device comprises a floor brush, the floor brush comprises a floor brush shell, a cleaning assembly and a dirt scraping piece which abuts against the cleaning assembly to scrape the cleaning assembly, the floor brush further comprises a movable cover arranged above the cleaning assembly in a covering mode, and the surface cleaning device further comprises a driving mechanism. The driving mechanism is used for driving the movable cover to move so that the movable cover can have a first state and a second state, and the cleaning assembly rotates to conduct cleaning operation. According to the movable cover, the state of the movable cover can be adjusted according to the actual application scene and / or the user operation habit in the cleaning operation, and the movable cover can well solve various complex technical problems in each operation process through state switching in the cleaning operation process; the cleaning equipment can adapt to more complex application scenes, and the cleaning equipment is more flexible in the application process.

Description

Technical Field

[0001] This application belongs to the field of cleaning technology, specifically relating to a surface cleaning device. Background Technology

[0002] As people's living standards improve, various surface cleaning devices, such as vacuum cleaners, floor scrubbers, and robotic vacuum cleaners, are gradually entering people's daily lives, providing great convenience for cleaning floors or carpets. Existing surface cleaning devices generally include a cleaning component with bristles of varying lengths. As the component rotates, the bristles continuously scrub the surface. However, after cleaning the floor or carpet, the bristles on the cleaning component become contaminated, requiring cleaning. To reduce the user's cleaning burden, more and more surface cleaning devices are also equipped with a base for cleaning the cleaning component. When cleaning is needed, the surface cleaning device is placed in the cleaning tank of the base, and rotating the cleaning component completes the self-cleaning process.

[0003] Existing surface cleaning devices also include a floor brush for mounting cleaning components and a scraper that abuts against the cleaning components to scrape them. The floor brush includes a brush housing and a top cover. The cleaning components are rotatably connected to the brush housing. The brush housing and the top cover cooperate to form a mounting cavity adapted to the cleaning components. The top cover can be detachably or fixedly mounted on the brush housing to prevent dirt from being thrown out by the rotating cleaning components during cleaning operations and contaminating areas outside the brush. Both detachable and fixed mounting of the top cover result in it maintaining a single posture during the cleaning and self-cleaning operations of the surface cleaning device, thus limiting its function to only preventing dirt from being thrown out. However, surface cleaning devices face various complex scenario-based problems during both cleaning and self-cleaning operations, and the single posture of the top cover does not provide any assistance in dealing with these complex scenario-based problems. For example, during the rotation of the cleaning component, the scraper's contact with the component causes the bristles to clump together. Combined with the water supply from the surface cleaning unit, this causes the bristles to flatten and adhere to the mop base, preventing them from remaining fluffy. During cleaning, the flattened bristles reduce friction between the bristles and the surface, thus decreasing cleaning effectiveness. Furthermore, during self-cleaning, the flattened bristles hinder drying, creating conditions for bacterial adhesion and growth, leading to mold growth and shortening the component's lifespan. Additionally, when the surface cleaning device is placed in the base's cleaning tank, a large gap exists between the top cover and the base's outer frame to accommodate airflow. Lighter hot air rises, and this gap provides a path for hot air leakage, reducing thermal efficiency and drying efficiency.

[0004] Patent document CN220695164U discloses a cleaning device including a floor brush assembly. The floor brush assembly includes a floor brush housing, a roller brush, and a roller brush cover. The roller brush is rotatably connected to the floor brush housing and is configured to clean the work surface. The roller brush cover and the floor brush housing form a roller brush cavity for cooperating with the roller brush. The roller brush cover is mounted on the floor brush housing through a guide mechanism. The guide mechanism is configured to be arc-shaped so that the roller brush cover is configured to move relative to the floor brush housing between a first position and a second position along an arc-shaped movement trajectory. When in the first position, there is a first contact area between the roller brush cover and the roller brush. When in the second position, there is a second contact area between the roller brush cover and the roller brush. The first contact area is greater than or equal to zero and is less than the second contact area. During the self-cleaning operation, the roller brush cover switches to the second position so that the inner wall of the roller brush cover can fit against the roller brush. During the rotation of the roller brush, the dirt on the inner wall of the roller brush cover can be cleaned. In other words, in this cleaning device, the switching of the roller brush cover position is to change the contact area between the roller brush cover and the roller brush, so as to minimize or even avoid contact between the roller brush and the roller brush cover during the cleaning operation, thereby reducing the resistance of the roller brush cover to the rotation of the roller brush. However, during the self-cleaning operation of the roller brush itself, the roller brush cover is kept in contact with the roller brush so that the inner wall of the roller brush cover is scrubbed by the roller brush. In other words, the first position of the roller brush cover corresponds to the cleaning operation process, and the second position of the roller brush cover corresponds to the self-cleaning operation process of the roller brush. Moreover, in each operation process, the posture of the roller brush cover is still singular, and it still cannot solve the various complex scenario problems faced in actual application. Furthermore, this cleaning equipment primarily addresses the cleaning of the inner wall of the roller brush cover. During the self-cleaning process, the roller brush cover and the roller brush need to make large-area contact to scrub the inner wall of the roller brush cover. This undoubtedly increases the operating resistance of the roller brush, increases power consumption, and can easily damage the bristles of the roller brush, affecting the service life of the mop on the outside of the roller brush. Moreover, during the drying stage, the large-area contact between the roller brush cover and the roller brush will hinder the circulation of hot air, preventing the hot air from flowing effectively and smoothly, thereby reducing drying efficiency. If drying is not timely or thorough, the roller brush will remain damp, providing a breeding ground for bacteria and causing the bristles to mold. This not only affects the service life of the roller brush but also causes secondary pollution to the surface to be cleaned when using the cleaning equipment. Summary of the Invention

[0005] This application provides a surface cleaning device to solve the technical problem that existing surface cleaning devices have fixed positions or single postures for their top covers or roller brush covers, which cannot cope with complex scenario problems during the use of the cleaning device, resulting in the top covers or roller brush covers of the cleaning device only having the single function of preventing dirt from being thrown out of the roller brush cavity during the cleaning operation.

[0006] The technical solution adopted in this application is as follows:

[0007] A surface cleaning device includes a surface cleaning apparatus, the surface cleaning apparatus including a floor brush, the floor brush including a floor brush housing, a cleaning component and a scraping element that abuts against the cleaning component to scrape the cleaning component, the floor brush also including a movable cover covering the cleaning component, the surface cleaning apparatus also including a drive mechanism for driving the movable cover to move to give the movable cover a first state and a second state, and the cleaning component rotating to perform cleaning operations.

[0008] The surface cleaning device described in this application also includes the following additional technical features:

[0009] The movable cover has a scooping portion extending toward the cleaning component. In the first state, the movable cover has a gap between the scooping portion and the cleaning component. In the second state, the movable cover has the scooping portion abutting against the cleaning component to scoop up the tufts of hair on the cleaning component as it changes its rotation direction.

[0010] The movable cover has a connecting end connected to the floor brush housing and a free end away from the connecting end. The shovel portion is disposed at the free end. The surface cleaning device also includes a base. The base has a receiving portion for accommodating the floor brush. The receiving portion is provided with an air outlet for supplying air to the cleaning assembly. When the floor brush is housed in the receiving portion, the cleaning assembly rotates to perform a self-cleaning operation. The shovel portion is arranged adjacent to the air outlet.

[0011] The movable cover is provided with a heating element, the heating element having a heat transfer surface disposed toward the cleaning component assembly. When the movable cover is in the first state, the heat transfer surface is at least partially in contact with the cleaning component. When the movable cover is in the second state, the heat transfer surface has a gap with the cleaning component.

[0012] The movable cover has a scraping portion extending toward the upper surface of the scraper. When the movable cover is in the first state, the scraping portion is located away from the cleaning component. When the movable cover is in the second state, the scraping portion is located close to the cleaning component. During the process of the movable cover switching from the first state to the second state, the scraping portion moves with the movable cover to the contact end between the scraper and the cleaning component to wipe and transport the dirt on the upper surface of the scraper to the suction port.

[0013] The floor brush also includes a fixed cover that covers the cleaning assembly and is located outside the movable cover, the movable cover being movably disposed on the fixed cover and / or the floor brush housing.

[0014] The floor brush further includes a fixed cover that covers the cleaning component and is located inside the movable cover. The movable cover is movably disposed on the fixed cover and / or the floor brush housing to have the first state and the second state. The fixed cover has a fixed end connected to the floor brush housing and a suspended end away from the fixed end. The movable cover has a shielding portion and a fixed portion away from the shielding portion.

[0015] In the first state, the movable cover is stacked entirely on top of the fixed cover;

[0016] In the second state, the shielding part is stacked above the suspended end or the shielding part is aligned with the suspended end along the extension direction of the fixed cover, the fixed part is supported on the support surface, and the cleaning component can be lifted.

[0017] The surface cleaning device further includes a base having a receiving portion for accommodating the floor brush, the receiving portion being provided with an air outlet for supplying air to the cleaning assembly; the cleaning assembly rotates to perform a self-cleaning operation;

[0018] In the first state, a ventilation opening is formed between the fixed cover and the receiving part;

[0019] In the second state, the receiving part is provided with the supporting surface, a first vent exists between the lower surface of the shielding part and the upper surface of the suspended end, and / or a second vent exists between the side of the movable cover and the side wall of the floor brush housing.

[0020] The supporting surface is the surface to be cleaned. In the second state, the fixing part abuts against the surface to be cleaned to support the cleaning component to detach from the surface to be cleaned.

[0021] The fixing part is provided with a support structure, which includes a first support part and a second support part. A slot with an opening facing away from the blocking part is formed between the first support part and the second support part. Both the first support part and the second support part are provided with an adsorption structure so that the fixing part is adsorbed and supported on the support surface.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0023] 1. The floor brush in this application has a movable cover covering the cleaning component. This movable cover can move under the drive of a driving mechanism to have a first state and a second state, while the cleaning component rotates to perform cleaning operations. Compared to existing technologies where the top cover or roller brush cover can only have a single posture during cleaning operations, the movable cover in this application can adjust its state according to the actual application scenario and / or user operating habits during cleaning operations. This adjustment of the movable cover's state can address technical problems such as poor cleaning effect due to fallen bristles and low heating efficiency. Therefore, the movable cover in this application can effectively meet various complex technical problems encountered during the cleaning process through state switching. This allows the cleaning equipment in this application to adapt to more complex application scenarios, improve the cleaning effect on the surface to be cleaned in various application scenarios, make the cleaning equipment more flexible during application, and enhance the user experience.

[0024] 2. In a preferred embodiment of this application, the movable cover has a shovel portion extending toward the cleaning component.

[0025] When the movable cover is in the first state, there is a gap between the shovel and the cleaning component, so that the shovel can be separated from the cleaning component. This avoids the shovel from generating resistance to the rotation of the cleaning component, whether in cleaning operations or self-cleaning operations.

[0026] When the cover is in the second state, the scooping part abuts against the cleaning component. This abutting state allows the scooping part to lift the tufts on the cleaning component as the cleaning component changes its rotation direction, thereby improving the flattened state of the tufts.

[0027] During cleaning operations, the bristles are scooped up. On the one hand, this helps to remove particles and other impurities trapped within the bristles, allowing them to fall off and be sucked away by the suction port. This reduces the amount of dirt on the cleaning components and prevents secondary contamination of the surface to be cleaned. On the other hand, when hair, threads, filaments, or other easily tangled materials are wrapped around the cleaning components, the change in distance between the scooped-up bristles and the flattened bristles pulls on or disrupts the original tangling trajectory of these materials. Combined with changes in the rotation direction of the cleaning components, these easily tangled materials can be untangled or loosened. With the suction action of the suction port, these easily tangled materials can be cleaned.

[0028] During self-cleaning operations, the bristles are lifted, creating gaps between them that allow for smooth hot air flow, thus improving drying efficiency. This not only saves power but also enhances the drying effect of the cleaning components, preventing them from becoming damp and moldy. Especially in rainy seasons or regions, the improved drying efficiency effectively prevents bacterial growth, extending the lifespan of the cleaning components and avoiding secondary contamination of the surfaces being cleaned during equipment use.

[0029] 3. In a preferred embodiment of this application, the movable cover is provided with a heating element, which has a heat transfer surface disposed toward the cleaning component assembly.

[0030] When the cover is in its first position, the heat transfer surface is at least partially in contact with the cleaning component, achieving contact heat transfer between the heating element and the cleaning component, thus improving the heat transfer efficiency of the heating element to the cleaning component. During cleaning operations, the contact heat transfer between the heating element and the cleaning component allows the cleaning component to heat up rapidly, achieving the effect of warm water mopping. This not only enhances the cleaning power of the surface but also has a certain bactericidal effect. Furthermore, the hot water evaporates more easily, reducing the likelihood of water stains on the surface to be cleaned. During self-cleaning operations, the contact heat transfer between the heating element and the cleaning component accelerates the drying speed of the cleaning component, allowing it to dehydrate quickly and preventing bacterial growth.

[0031] When the movable cover is in the second state, there is a gap between the heat transfer surface and the cleaning component. During the cleaning operation, this gap prevents the heating element from creating resistance to the rotation of the cleaning component, improving the smoothness of the rotation. During the self-cleaning operation, this gap provides a channel for hot air to flow around the outer periphery of the cleaning component, thereby improving the hot air circulation efficiency, increasing the drying efficiency of the cleaning component, and accelerating the drying process.

[0032] 4. During cleaning operations or self-cleaning operations, some stains may remain on the upper surface of the scraper, creating cleaning dead zones. For solutions with removable top or roller brush covers, the roller brush cavity can be exposed to the user's view by removing the top or roller brush cover and the cleaning components, allowing for manual wiping of the stains on the upper surface of the scraper. However, for solutions with non-removable top or roller brush covers, even after removing the cleaning components, the upper surface of the scraper is not fully exposed to the user, resulting in the scraper becoming a heavily contaminated area. After the cleaning components are assembled into the floor brush housing, the stains on the upper surface of the scraper will contaminate the cleaning components, affecting their cleaning performance and ultimately impacting the cleaning effect on the surface to be cleaned.

[0033] In a preferred embodiment of this application, the movable cover is provided with a scraping portion extending toward the upper surface of the scraping component. When the movable cover is in a first state, the scraping portion is located away from the cleaning component; when the movable cover is in a second state, the scraping portion is located closer to the cleaning component. During the transition from the first state to the second state, the scraping portion moves with the movable cover to the contact end between the scraping component and the cleaning component, wiping and conveying dirt from the upper surface of the scraping component to the suction port. In this embodiment, the switching action of the movable cover from the first state to the second state can be performed during a cleaning operation or during a self-cleaning operation.

[0034] In other words, during the transition from the first state to the second state, the active cover can wipe the surface of the scraper through the scraping part, thereby achieving automated cleaning of the surface of the scraper. This reduces the difficulty and burden of manual cleaning for users and also prevents the accumulated dirt on the surface of the scraper from affecting the cleanliness of the cleaning component itself.

[0035] 5. In a preferred embodiment of this application, the floor brush further includes a fixed cover disposed above the cleaning components and located outside the movable cover, the movable cover being movably disposed on the fixed cover or the floor brush housing. The fixed cover can at least partially shield the movable cover. Compared to technical solutions where the movable cover directly faces the complex external cleaning environment, the fixed cover shielding the movable cover allows it to be in a relatively "comfortable" environment. During the switching between the first and second states, the movable cover is protected from external environmental interference due to the presence of the fixed cover. For example, the state switching of the movable cover will not interfere with objects in the external environment. Moreover, the state switching process of the movable cover is concealed, which can enhance the overall appearance consistency and coordination of the cleaning equipment, avoid the abruptness caused by its movement, and improve the user experience.

[0036] 6. In a preferred embodiment of this application, the floor brush further includes a fixed cover disposed above the cleaning component and located inside the movable cover. The fixed cover has a fixed end connected to the floor brush housing and a suspended end away from the fixed end. The movable cover has a blocking part and a fixed part away from the blocking part.

[0037] In the first state, the movable cover is stacked entirely on top of the fixed cover. During cleaning operations, the movable cover, stacked on top of the fixed cover, acts as a shield, preventing dirt ejected from the cleaning components from adhering to the inner wall of the movable cover. This reduces the difficulty and burden of cleaning the movable cover for the user. During self-cleaning operations, the movable cover, stacked on top of the fixed cover, creates a large ventilation opening between the movable cover and the base, providing a channel for external airflow. This improves heat exchange between the base station and the outside environment, preventing the cleaning components from being in a humid and stuffy environment and accelerating the drying efficiency of the cleaning components. Furthermore, it allows external airflow to further dry the cleaning components, enhancing their drying efficiency.

[0038] In the second state, the shielding part is stacked above the suspended end or the shielding part is aligned with the suspended end along the extension direction of the fixed cover, the fixed part can be supported on the support surface, and the cleaning component is lifted.

[0039] During cleaning operations, the movable cover can be stacked on top of the fixed cover or aligned with the suspended end along the extension direction of the fixed cover. This reduces the overall height of the floor brush, allowing it to reach low areas such as under tables, beds, and cabinets, thus expanding the cleaning area and enhancing the user experience. Furthermore, during cleaning operations, when the movable cover moves to a point where its fixed part can be supported on a certain support surface, the cleaning component can be lifted to detach from the surface to be cleaned, enabling cleaning operations in special scenarios. For example, when the cleaning equipment is cleaning a low-lying area containing sewage, the fixed part is supported on the support surface, the cleaning component is lifted, and the sewage in the low-lying area is sucked away by the suction port, reducing the sewage's soaking into the cleaning component and lowering the degree of contamination. This reduces the cleaning difficulty of the cleaning component during self-cleaning operations. Similarly, when the cleaning equipment moves to an area with a high concentration of hair, the fixed part is supported on the support surface, the cleaning component is lifted, and hair and other easily entangled objects can be sucked away by the suction port, significantly reducing the probability of the cleaning component being entangled by hair.

[0040] In the self-cleaning operation, the movable cover is stacked on top of the fixed cover or the movable cover is aligned with the suspended end along the extension direction of the fixed cover. This allows the movable cover to cooperate with the base or the surface to be cleaned to form a chamber for the cleaning components to perform self-cleaning. On the one hand, this reduces the communication area between the interior of the chamber and the external environment during the self-cleaning process, reduces the amount of hot air leakage, and improves drying efficiency. On the other hand, it creates an air inlet gap between the movable cover and the fixed cover to achieve heat exchange between the interior and exterior of the chamber, avoiding a stuffy and humid foggy environment in the chamber under hot air blowing conditions, which is not conducive to the drying of the cleaning components. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 This is a perspective view of a cleaning device according to one embodiment of this application;

[0043] Figure 2 This is a perspective view of a surface cleaning device according to one embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 1 of this application. Specifically, it illustrates the cooperation relationship between the shovel and the cleaning component when the movable cover is in the first state in Embodiment 1. The arrow markings at the air outlet of the base station indicate the air supply at the air outlet, and the arrow markings inside the cleaning component indicate the forward rotation of the cleaning component.

[0045] Figure 4 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 1 of this application. Specifically, it illustrates the cooperation relationship between the shovel and the cleaning component when the movable cover is in the second state in Embodiment 1. The arrow markings at the air outlet of the base station indicate the air supply at the air outlet, and the arrow markings inside the cleaning component indicate the forward rotation of the cleaning component.

[0046] Figure 5 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 1 of this application. Specifically, it illustrates the cooperation relationship between the shovel and the cleaning component when the movable cover is in the first state in Embodiment 2. Among them, the arrow marking line at the air outlet of the base station indicates the air supply at the air outlet, and the arrow marking line inside the cleaning component indicates the forward rotation of the cleaning component.

[0047] Figure 6 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 1 of this application. Specifically, it illustrates the cooperation relationship between the shovel and the cleaning component when the movable cover is in the second state in Embodiment 2. The arrow markings at the air outlet of the base station indicate the air supply at the air outlet, and the arrow markings inside the cleaning component indicate the forward rotation of the cleaning component.

[0048] Figure 7 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 2 of this application. Specifically, it illustrates the cooperation relationship between the heating element and the cleaning component when the movable cover is in the first state in Embodiment 2. The arrow markings at the air outlet of the base station indicate the air supply at the air outlet, and the arrow markings inside the cleaning component indicate the forward rotation of the cleaning component.

[0049] Figure 8 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 2 of this application. Specifically, it illustrates the cooperation relationship between the heating element and the cleaning component when the movable cover is in the second state in Embodiment 2. Among them, the arrow marking line at the air outlet of the base station indicates the air supply at the air outlet, and the arrow marking line inside the cleaning component indicates the forward rotation of the cleaning component.

[0050] Figure 9 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 3 of this application. Specifically, it illustrates the cooperation relationship between the scraping part and the cleaning component when the movable cover is in the first state in Embodiment 3. Among them, the arrow marking line at the air outlet of the base station indicates the air supply at the air outlet, and the arrow marking line inside the cleaning component indicates the forward rotation of the cleaning component.

[0051] Figure 10 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 3 of this application. Specifically, it illustrates the cooperation relationship between the scraping part and the cleaning component when the movable cover is in the second state in Embodiment 3. Among them, the arrow marking line at the air outlet of the base station indicates the air supply at the air outlet, and the arrow marking line inside the cleaning component indicates the forward rotation of the cleaning component.

[0052] Figure 11 This is a schematic diagram showing the fit between the lower surface cleaning device and the base in Embodiment 4 of this application;

[0053] Figure 12 This is a schematic diagram of the positional relationship between the lower surface cleaning device and the surface to be cleaned in Embodiment 5 of this application, specifically a schematic diagram of the state when the movable cover is in the first state in Embodiment 5.

[0054] Figure 13 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 5 of this application. Specifically, it illustrates the cooperation relationship between the movable cover and the base station when the movable cover is in the first state in Embodiment 5. The arrowed lines indicate the airflow direction in the suction path and the air supply path.

[0055] Figure 14 This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 5 of this application. Specifically, it illustrates the cooperation relationship between the movable cover and the base station when the movable cover is in the second state in Embodiment 5. The arrowed lines indicate the airflow direction in the suction path and the air supply path.

[0056] Figure 15 This is a schematic diagram of the positional relationship between the lower surface cleaning device and the surface to be cleaned in Embodiment 5 of this application, specifically a schematic diagram of the state when the movable cover is in the second state in Embodiment 5.

[0057] Figure 16This is a schematic diagram of the cooperation relationship between the lower surface cleaning device and the base in Embodiment 7 of this application, specifically illustrating the cooperation relationship between the movable cover and the base station when the movable cover is in the second state; wherein, the arrowed lines indicate the airflow direction in the suction path and the air supply path;

[0058] Figure 17 This is Embodiment 1 of Embodiment 8 of this application, in which the first vent is located on the movable cover;

[0059] Figure 18 This is a longitudinal partial sectional view of the floor brush in Embodiment 8 of this application, placed on the base and engaging with the movable cover; wherein, the arrowed lines indicate the airflow direction in the suction path and the air supply path;

[0060] Figure 19 This is Embodiment 2 of Embodiment 8 of this application, in which the first vent is located on the movable cover; wherein, the arrowed markings indicate the airflow direction in the air intake path and the air supply path;

[0061] Figure 20 This is Embodiment 3 of Embodiment 8 of this application, in which the first vent is located on the movable cover; wherein, the arrowed markings indicate the airflow direction in the air intake path and the air supply path;

[0062] Figure 21 This is Embodiment 4 of Embodiment 8 of this application, in which the first vent is located on the movable cover; wherein, the arrowed markings indicate the airflow direction in the air intake path and the air supply path;

[0063] Figure 22 This is one embodiment of the first vent in Embodiment 9 of this application, which is formed by the cooperation of a fixed cover and a movable cover; wherein, the arrowed markings indicate the airflow direction in the air intake path and the air supply path;

[0064] Figure 23 This is a schematic diagram of the movable cover being fixed above the fixed cover in Embodiment 10 of this application; wherein, the arrowed lines indicate the airflow direction in the suction path and the air supply path;

[0065] Figure 24 This is a schematic diagram of Embodiment 10 of this application, showing the movable cover moving to the point of contact with the front baffle and the cleaning component in the first working position; wherein, the arrowed lines indicate the airflow direction in the suction path and the air supply path;

[0066] Figure 25 This is a schematic diagram of Embodiment 10 of this application, showing the movable cover moving to the point of contact with the front baffle and the cleaning component in the second working position; wherein, the arrowed markings indicate the airflow direction in the suction path and the air supply path.

[0067] in,

[0068] 1. Surface to be cleaned; 2. Cleaning components; 21. Cleaning roller; 22. Bristles; 3. Fixed cover; 31. Fixed end; 32. Suspended end; 33. Swing rod; 4. Movable cover; 41. Scooping part; 42. Heating element; 43. Scraping part; 44. Shielding part; 45. Fixed part; 451. First support part; 452. Second support part; 453. Slot; 46. Transverse section; 47. Curved section; 48. Side baffle; 49. Shielding piece; 410. Bending part; 5. 6. Floor brush housing; 7. Scraper; 8. Base; 9. Receiving part; 10. Front baffle; 11. Air outlet; 12. Side baffle; 13. First wall; 14. Second wall; 15. Tray; 16. Side air duct; 17. Circumferential air duct; 18. Inner cavity; 19. Cleaning tank; 20. First vent; 21. Ventilation opening; 22. First airflow; 33. Third airflow; 44. Fourth airflow; 55. Suction port; 66. Second vent. Detailed Implementation

[0069] Example 1:

[0070] like Figure 2 As shown, a surface cleaning device includes a surface cleaning apparatus, which includes a floor brush. The floor brush includes a floor brush housing 5, a cleaning component 2, and a scraping component 6 that abuts against the cleaning component 2 to scrape the cleaning component 2. The floor brush also includes a movable cover 4 covering the cleaning component 2. The surface cleaning apparatus also includes a drive mechanism for driving the movable cover 4 to move so that the movable cover 4 has a first state and a second state. The cleaning component 2 rotates to perform cleaning operations.

[0071] In this embodiment, the floor brush is covered with a movable cover 4 above the cleaning component 2. The movable cover 4 can move under the drive of the drive mechanism to have a first state and a second state, while the cleaning component 2 rotates to perform cleaning operations. Compared with the existing technology where the top cover or roller brush cover can only have a single posture during the cleaning operation, the movable cover 4 in this embodiment can adjust its state according to the actual application scenario and / or user operating habits during the cleaning operation. The adjustment of the movable cover 4's state can solve technical problems such as poor cleaning effect and low heating efficiency caused by the tufts 22 falling over. This allows the movable cover 4 in this embodiment to meet various complex technical problems encountered during the cleaning operation through state switching. This makes the cleaning equipment in this embodiment not only adaptable to more complex application scenarios and improve the cleaning effect on the surface 1 to be cleaned in various application scenarios, but also makes the cleaning equipment more flexible during application and improves the user experience.

[0072] In this embodiment 1, the movable cover 4 is provided with a scooping part 41 extending toward the cleaning component 2. When the movable cover 4 is in a first state, the scooping part 41 has a gap with the cleaning component 2. When the movable cover 4 is in a second state, the scooping part 41 abuts against the cleaning component 2 so as to scoop up the hair tufts 22 on the cleaning component 2 during the process of changing the rotation direction of the cleaning component 2.

[0073] When the movable cover 4 is in the first state, there is a gap between the shovel part 41 and the cleaning component 2 so that the shovel part 41 can be separated from the cleaning component 2. Whether in cleaning operation or self-cleaning operation, the shovel part 41 can avoid generating resistance to the rotation of the cleaning component 2.

[0074] When the movable cover 4 is in the second state, the scooping part 41 abuts against the cleaning component 2. This abutting state allows the scooping part 41 to scoop up the bristles 22 on the cleaning component 2 as the cleaning component 2 changes its rotation direction, so as to improve the flattened state of the bristles 22.

[0075] During cleaning, the bristles 22 are lifted up. On the one hand, this helps to remove particles and other impurities trapped in the bristles 22 during the cleaning process, allowing them to fall off due to the separation or loosening of the bristles 22 and be sucked away by the suction port 14. This reduces the amount of dirt on the outside of the cleaning component 2, thus avoiding secondary pollution of the surface 1 to be cleaned. On the other hand, when the outside of the cleaning component 2 is wrapped with hair, thread, filament, or other easily tangled objects, the change in distance between the lifted bristles 22 and the fallen bristles 22 will pull or disrupt the original tangling trajectory of the hair, thread, filament, etc., wrapped around it. With the cleaning component changing its rotation direction, the hair, thread, filament, etc., can be untangled or pulled loose. Combined with the suction action of the suction port 14, the cleaning of such easily tangled objects can be achieved.

[0076] During the self-cleaning process, the bristles 22 are lifted, creating flow gaps between them. This facilitates smooth hot air circulation, improving drying efficiency, saving power, and enhancing the drying effect of the cleaning component 2, preventing it from becoming damp and moldy. Especially in rainy seasons or regions, the improved drying efficiency effectively prevents bacterial growth, extending the lifespan of the cleaning component 2 and avoiding secondary contamination of the surface 1 to be cleaned during the use of the cleaning equipment.

[0077] like Figure 4 As shown, in a preferred embodiment of this invention, the angle between the extending direction of the shovel 41 and the normal direction at the contact point with the cleaning component 2 is α, where α ≤ 90°, so that the shovel 41 shovels up the tufts 22 on the cleaning component 2 as it moves with the movable cover 4. Figure 3 and Figure 4Taking the counterclockwise direction R shown as the forward rotation direction of the cleaning component 2 as an example, during the cleaning operation, the cleaning component 2 rotates counterclockwise to wipe the surface 1 to be cleaned. At this time, the bristles 22 on the outer periphery of the cleaning component 2, under the action of centrifugal force, present an appearance as follows: Figure 4 As shown in the diagram, when the movable cover 4 moves to the second state, the shovel part 41 inserts into the tuft 22 to interfere with the tuft 22. Combined with the rotation of the cleaning component 2, this breaks the collapsed state of the tuft 22, making the tufts looser and allowing dirt and other contaminants trapped within them to be easily ejected and cleaned. During the self-cleaning operation, the cleaning component 2 rotates alternately in the forward and reverse directions: during forward rotation, the collapsed state of the tuft 22 is consistent with the collapsed state in the aforementioned cleaning operation. When the movable cover 4 moves to the second state, it can also loosen the tuft 22 during the self-cleaning operation, facilitating the removal of dirt and improving the flow of hot air, thus increasing drying efficiency. During reverse rotation (i.e., in the direction of rotation with...), the tuft 22 is also loosened. Figure 4 The collapsing state of the hair tuft 22 is the opposite of the counterclockwise direction shown in the clockwise direction. Figure 4 In contrast to the collapsed state shown, when the movable cover 4 moves to the second state, the scooping part 41 can still be inserted into the collapsed hair tuft 22 to scoop up the hair tuft 22, thereby facilitating the falling of dirt and the circulation of hot air.

[0078] The cleaning component 2 includes a cleaning roller 21 and a brush cloth wrapped around the outside of the cleaning roller 21. The brush cloth includes a base and a plurality of bristles 22 disposed on the base. As a preferred embodiment of this embodiment 1, when the movable cover 4 is in the second state, the scooping part 41 contacts the bristles 22 and there is a gap between the scooping part 41 and the base, so as to scoop up the bristles 22 while avoiding the scooping part 41 contacting the base and generating greater resistance to the rotation of the cleaning component 2.

[0079] In this embodiment 1, the location of the shovel 41 is not limited, and it can be any of the following embodiments:

[0080] Implementation method one: such as Figure 3 and Figure 4As shown, the movable cover 4 has a connecting end connected to the floor brush housing 5 and a free end away from the connecting end, with a scooping part 41 disposed at the connecting end. The surface cleaning device also includes a dispensing unit for supplying cleaning fluid to the cleaning assembly 2. The dispensing unit is disposed adjacent to the scraper 6, and the connecting end of the movable cover 4 is arranged near the dispensing unit. Regardless of whether the cleaning assembly 2 rotates clockwise or counterclockwise, after the scraper 6 scrapes the dirt and the dispensing unit sprays the fluid, the bristles 22 tend to lie flat to adhere to the base of the brush cloth. Therefore, by disposing of the scooping part 41 at the connecting end of the movable cover 4 near the dispensing unit, when the cleaning assembly changes its rotation direction, the scooping part can scoop up the bristles and promptly improve the lying state of the bristles 22, so as to give full play to their respective advantages in cleaning operations and self-cleaning operations.

[0081] Implementation Method Two: (e.g.) Figure 5 and Figure 6 As shown, the movable cover 4 has a connecting end connected to the floor brush housing 5 and a free end away from the connecting end. The scooping part 41 is provided at the free end. The surface cleaning device also includes a base with a receiving part 71 for accommodating the floor brush. The receiving part 71 is provided with an air outlet 73 for supplying air to the cleaning assembly 2. When the floor brush is contained in the receiving part 71, the cleaning assembly rotates to perform self-cleaning operations. The scooping part 41 is arranged adjacent to the air outlet 73.

[0082] Similar to the effect of setting the shovel part 41 at the connecting end in the first embodiment described above, setting the shovel part 41 at the free end of the movable cover 4 allows the shovel part 41 to shovel up the bristles 22 during the cleaning process, thereby loosening the bristles 22, increasing the friction between the bristles 22 and the surface 1 to be cleaned, improving the wiping effect, and after being loosened, it is conducive to the falling off of dirt or to the prevention of tangling of easily tangled objects, thereby improving the cleaning effect.

[0083] like Figure 1 and Figure 6 As shown, when the surface cleaning device is placed on the base, it can perform self-cleaning. In this second embodiment, the shovel 41 is set at the free end of the movable cover 4, and the floor brush of the surface cleaning device is placed in the receiving part 71. With the free end close to the air outlet 73 of the receiving part 71, the shovel 41 shovels up and loosens the bristles 22. When the air is discharged from the air outlet 73 (it can be hot air or cold air, depending on the setting of the air supply unit in the base), it is easier to air dry or bake the bristles 22, thereby improving the drying efficiency of the cleaning component 2.

[0084] In this embodiment 1, the arrangement of the shovel part 41 is not limited: in one embodiment, the shovel part 41 is provided on the movable cover 4 and is provided in multiple spaces along the axial direction of the cleaning component 2; in another embodiment, the shovel part 41 is provided on the movable cover 4, the shovel part 41 includes a base extending along the axial direction of the cleaning component 2, the base is fixedly connected to the movable cover 4, and the base is provided with a number of comb teeth on the side facing the cleaning component 2.

[0085] In this embodiment 1, the connection method between the shovel part 41 and the movable cover 4 is not limited: in one embodiment, the shovel part 41 and the movable cover 4 are integrally formed; in another embodiment, after the shovel part 41 and the movable cover 4 are separately formed, the shovel part 41 is installed on the movable cover 4 by a detachable connection method or a non-detachable connection method.

[0086] This embodiment 1 does not limit the control method of the movable cover 4 during cleaning and self-cleaning operations: In one embodiment, the surface cleaning device includes a control unit. During cleaning and self-cleaning operations, the control unit automatically controls the drive mechanism to drive the movable cover 4 to move intermittently, thereby achieving the switching between a first state and a second state. That is, through intelligent control, the intermittent movement of the movable cover 4 is achieved. In another embodiment, the surface cleaning device includes a trigger unit and a control unit electrically connected to the trigger unit. During use, during cleaning and self-cleaning operations, the user can choose whether to operate the trigger unit to control the drive mechanism through the control unit to drive the movable cover 4 to switch states. That is, the state switching of the movable cover 4 can be triggered by the user to achieve random adjustment, thereby reducing power consumption and meeting more practical and complex cleaning scenarios.

[0087] In this embodiment 1, the movement of the movable cover 4 is not limited. Taking the arrangement direction of the cleaning component 2 and the floor brush housing 5 as a reference, the cleaning component 2 is located in front of the floor brush housing 5, and the floor brush housing 5 is located behind the cleaning component 2. Therefore, in a preferred embodiment, the movable cover 4 moves back and forth to achieve the switching between its first state and the second state. That is, the drive mechanism drives the movable cover 4 to perform a linear feed motion to achieve the state switching of the movable cover 4.

[0088] like Figures 3 to 6 As shown, the cleaning component 2 of the surface cleaning device includes a single cleaning roller 21, with a brush cloth wrapped around the outside of the single cleaning roller 21. However, this embodiment 1 is not limited to this and can also be applied to the implementation of the cleaning component 2 having multiple cleaning rollers 21, with a brush cloth wrapped around the multiple cleaning rollers 21.

[0089] In other words, in this embodiment, the cleaning component can be formed by one or two roller brushes. The roller brush includes a circular roller, and a brush cloth is wrapped or attached to the circular roller. The brush cloth has bristles. For a single roller brush, the front end of the cleaning component refers to the part located in front of the central axis of the cleaning component. Alternatively, the cleaning component is 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 brush cloth to facilitate the removal and replacement of the brush cloth. For a 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 part located in front of the central axis of the roller on the outside of the floor brush. The scraping component can include a scraper, a comb, or a scraper and a comb below the scraper. The clean water tank and / or water pump can be disposed on the machine body or inside the floor brush.

[0090] Example 2:

[0091] This embodiment 2 is basically the same as embodiment 1 in structure and principle. The difference lies in the structural component on the movable cover 4 that can interact with the cleaning component 2, which is different. The details are as follows:

[0092] The movable cover 4 is provided with a heating element 42, which has a heat transfer surface facing the cleaning component assembly.

[0093] like Figure 8 As shown, when the movable cover 4 is in the first state, the heat transfer surface is at least partially in contact with the cleaning component 2 to achieve contact heat transfer between the heating element 42 and the cleaning component 2, thereby improving the heat transfer efficiency of the heating element 42 to the cleaning component 2. During cleaning operations, the contact heat transfer between the heating element 42 and the cleaning component 2 allows for rapid heating of the cleaning component 2, achieving the effect of warm water floor cleaning. This not only enhances the cleaning ability of the surface 1 to be cleaned but also provides a certain degree of sterilization. Furthermore, the hot water evaporates more easily, reducing the likelihood of water stains on the surface to be cleaned. During self-cleaning operations, the contact heat transfer between the heating element 42 and the cleaning component 2 accelerates the drying speed of the cleaning component 2, enabling rapid dehydration and preventing bacterial growth.

[0094] like Figure 7 As shown, when the movable cover 4 is in the second state, there is a gap between the heat transfer surface and the cleaning component 2. During the cleaning operation, the presence of this gap can prevent the heating element 42 from creating resistance to the rotation of the cleaning component 2, thus improving the smoothness of the rotation of the cleaning component 2. During the self-cleaning operation, the presence of this gap can provide a channel for air to flow around the outer periphery of the cleaning component 2, thereby improving the air circulation efficiency, increasing the drying efficiency of the cleaning component 2, and accelerating the drying of the cleaning component 2.

[0095] Example 3:

[0096] During cleaning operations or self-cleaning operations, some stains may remain on the upper surface of the scraper 6, creating cleaning dead zones. For solutions with a removable top cover or roller brush cover, the roller brush cavity can be exposed to the user's view by removing the top cover or roller brush cover and the cleaning component 2, allowing for manual wiping of the stains on the upper surface of the scraper 6. However, for solutions with a non-removable top cover or roller brush cover, even after removing the cleaning component 2, the upper surface of the scraper 6 is not fully exposed to the user's view, resulting in the upper surface of the scraper 6 becoming a heavily contaminated area. After the cleaning component 2 is assembled into the floor brush housing 5, the stains on the upper surface of the scraper 6 will contaminate the cleaning component 2, affecting its cleaning performance and consequently impacting the cleaning effect on the surface 1 to be cleaned.

[0097] This embodiment 3 is basically the same as embodiment 1 in structure and principle. The difference lies in the structural component on the movable cover 4 that can interact with the cleaning component 2, which is different. The details are as follows:

[0098] The movable cover 4 is provided with a scraping portion 43 extending toward the upper surface of the scraping member 6, such as... Figure 9 As shown, when the movable cover 4 is in the first state, the scraping part 43 is in a position away from the cleaning component 2, such as... Figure 10 As shown, when the movable cover 4 is in the second state, the scraping part 43 is located close to the cleaning component 2. During the process of the movable cover 4 switching from the first state to the second state, the scraping part 43 moves with the movable cover 4 to the contact end between the scraping part 6 and the cleaning component 2, so as to wipe and transport the dirt on the upper surface of the scraping part 6 to the suction port 14.

[0099] In this embodiment 3, the switching action of the movable cover 4 from the first state to the second state can be performed during the cleaning operation or during the self-cleaning operation. In other words, during the switching process from the first state to the second state, the movable cover 4 can wipe the upper surface of the scraper 6 through the scraper part 43, thereby realizing the automated cleaning of the upper surface of the scraper 6. This reduces the difficulty and burden of manual wiping for users and also avoids the accumulation of dirt on the upper surface of the scraper 6 from affecting the cleanliness of the cleaning component 2 itself.

[0100] In one embodiment, the front side of the scraping part 43 (i.e., the side of the scraping part 43 facing the cleaning component 2) is provided with a thin blade to enhance its scraping effect on the stains on the upper surface of the scraping component 6 during the transition from the first state to the second state. The thin blade can be integrally formed with the scraping part 43, or it can be formed independently and then assembled.

[0101] In another embodiment, the bottom of the scraping part 43 (i.e. the side of the scraping part 43 facing and contacting the upper surface of the scraping member 6) is provided with a wiping part for easy wiping. The wiping part can be, for example, a cotton swab. By adding the wiping part, the wiping effect on the upper surface of the scraping member 6 is improved.

[0102] It should be noted that the structural component on the active cover 4 that can interact with the cleaning component 2 in this application can be any one of the above embodiments 1 to 3, or any combination of two or three.

[0103] Example 4:

[0104] This embodiment 4 is basically the same in structure and principle as embodiments 1, 2, and 3. The difference is that embodiments 1, 2, and 3 only have one movable cover 4, while this embodiment 4 also has one fixed cover 3, which is described in detail below:

[0105] like Figure 11 As shown, the floor brush also includes a fixed cover 3 that covers the cleaning component 2 and is located outside the movable cover 4. The movable cover 4 is movably disposed on the fixed cover 3 and / or the floor brush housing 5. There is a movement space between the fixed cover 3 and the cleaning component 2 for the movable cover 4 to switch states.

[0106] The fixed cover 3 can at least partially obstruct the movable cover 4. Compared with the technical solution where the movable cover 4 faces the complex external cleaning environment, the obstruction of the movable cover 4 by the fixed cover 3 can keep the movable cover 4 in a relatively "comfortable" environment. During the switching between the first and second states, the movable cover 4 can be protected from interference from the external environment due to the presence of the fixed cover 3. For example, the state switching of the movable cover 4 will not interfere with objects in the external environment. Moreover, the state switching process of the movable cover 4 is concealed, which can enhance the consistency and coordination of the overall appearance of the cleaning equipment, avoid the abruptness caused by its movement, and improve the user experience.

[0107] In one embodiment, the fixing cover 3 is integrally formed with the brush housing 5; in another embodiment, the fixing cover 3 and the brush housing 5 are separately formed and then assembled into the brush housing 5.

[0108] Preferably, the fixed cover 3 extends forward so that the projection of the fixed cover 3 toward the movable cover 4 can cover the movable cover 4.

[0109] Example 5:

[0110] The principle of Embodiment 5 is basically the same as that of Embodiment 1, but the structure has changed significantly, as detailed below:

[0111] The floor brush also includes a fixed cover 3 that covers the cleaning component 2 and is located inside the movable cover 4. The movable cover 4 is movably disposed on the fixed cover 3 and / or the floor brush housing 5 to have a first state and a second state. The fixed cover 3 has a fixed end 31 connected to the floor brush housing 5 and a suspended end 32 away from the fixed end 31. The movable cover 4 has a shielding part 44 and a fixed part 45 away from the shielding part 44.

[0112] In the first state, the movable cover 4 is stacked on top of the fixed cover 3;

[0113] In the second state, the shielding part 44 is stacked above the suspended end 32 or the shielding part 44 is aligned with the suspended end 32 along the extension direction of the fixing cover 3, the fixing part 45 can be supported on the supporting surface, and the cleaning component 2 can be lifted.

[0114] The term "fixed part 45 can be supported on the support surface" means that in the second state, the movable cover 4 can have multiple positions. In the extreme position, the fixed part 45 is supported on the support surface. In the non-extreme position, the movable cover 4 moves relative to the position where the movable cover 4 is in the first state to a position where it is partially stacked on the outside of the fixed cover 3.

[0115] like Figure 12 As shown, in the first state, the movable cover 4 is stacked entirely on top of the fixed cover 3. During cleaning operations, the movable cover 4 is stacked entirely on top of the fixed cover 3, which can shield the movable cover 4 from dirt ejected by the cleaning component 2, thus reducing the difficulty and burden of cleaning the movable cover 4 for the user. During self-cleaning operations, the movable cover 4 is stacked entirely on top of the fixed cover 3, which can form a large ventilation opening 9 between the movable cover 4 and the base, providing a channel for the entry of external airflow. On the one hand, this improves the heat exchange between the base station 7 and the outside, preventing the cleaning component 2 from being in a humid and stuffy environment and accelerating the drying efficiency of the cleaning component 2. On the other hand, it can use the external airflow to dry the cleaning component 2, further improving the drying efficiency of the cleaning component 2.

[0116] In the second state, the shielding part 44 is stacked above the suspended end 32 or the shielding part 44 is aligned with the suspended end 32 along the extension direction of the fixing cover 3, the fixing part 45 can be supported on the support surface, and the cleaning component 2 is lifted.

[0117] During cleaning operations, the movable cover 4 is stacked on top of the fixed cover 3, or the movable cover 4 is aligned with the suspended end 32 along the extension direction of the fixed cover 3. This reduces the overall height of the floor brush, allowing the floor brush of the cleaning equipment to reach low areas such as under tables, beds, and cabinets, thus expanding the cleaning area of ​​the cleaning equipment and enhancing the user experience. Furthermore, during cleaning operations, when the movable cover 4 moves to the point where its fixed part 45 can be supported on a certain support surface, the cleaning component 2 can be lifted so that it can detach from the surface 1 to be cleaned, thereby enabling cleaning operations in special scenarios. For example, when the cleaning equipment cleans a low-lying area containing sewage, the fixed part 45 is supported on the support surface, the cleaning component 2 is lifted, and the sewage in the low-lying area is sucked away by the suction port 14, reducing the soaking of the cleaning component 2 by sewage and reducing the degree of contamination of the cleaning component 2, thereby reducing the cleaning difficulty of the cleaning component 2 in self-cleaning operations. For another example, when the cleaning equipment moves to an area with a high concentration of hair, the fixed part 45 is supported on the support surface, the cleaning component 2 is lifted, and hair and other easily entangled objects can be sucked away by the suction port 14, greatly reducing the probability of the cleaning component 2 being entangled by hair and other objects.

[0118] In the self-cleaning operation, the movable cover 4 is stacked on top of the fixed cover 3 or the movable cover 4 is aligned with the suspended end 32 along the extension direction of the fixed cover 3. This allows the movable cover 4 to cooperate with the base or the surface to be cleaned 1 to form a chamber for the cleaning component 2 to perform self-cleaning. On the one hand, this can reduce the communication area between the interior of the chamber and the external environment during the self-cleaning process, reduce the amount of hot air leakage, and improve the drying efficiency. On the other hand, it can form an air inlet gap between the movable cover 4 and the fixed cover 3 to achieve heat exchange between the interior and exterior of the chamber, and avoid the chamber being in a stuffy and humid fog environment under hot air blowing conditions, which is not conducive to the drying of the cleaning component 2.

[0119] The supporting surface in this embodiment 5 can take many forms, and can adopt any of the following embodiments:

[0120] Implementation Method 3: For example Figure 1 As shown, the surface cleaning equipment also includes a base with a receiving portion 71 for accommodating a floor brush. The receiving portion 71 is provided with an air outlet 73 for supplying air to the cleaning assembly 2. With the floor brush housed in the receiving portion 71, the cleaning assembly rotates to perform a self-cleaning operation. Figure 13 As shown, in the first state, a ventilation opening 9 is formed between the fixed cover 3 and the receiving part 71; as Figure 14As shown, in the second state, the receiving part 71 has a supporting surface, and a first vent 8 exists between the lower surface of the shielding part 44 and the upper surface of the suspended end 32, and / or, a second vent exists between the side of the movable cover 4 and the side wall of the floor brush housing 5. That is, when the movable cover 4 switches from the first state to the second state, the movable cover 4 can at least partially shield the ventilation opening 9 to reduce the leakage of air from the ventilation opening 9 during self-cleaning operations and improve drying efficiency. Preferably, a hot air unit for supplying hot air to the air outlet 73 is provided in the base. By shielding the ventilation opening 9, the leakage of hot air can be reduced and the drying efficiency can be improved.

[0121] In a specific example, such as Figure 14 As shown, the front baffle 72 at the front end of the receiving part 71 is provided with an air outlet 73. The front baffle 72 at the front end of the receiving part 71 constitutes a support surface for supporting the fixed part 45 of the movable cover 4. When the movable cover 4 is in the second state, the fixed part 45 of the movable cover 4 is supported on the support surface. There is a first ventilation opening 8 between the lower surface of the blocking part 44 of the movable cover 4 and the upper surface of the suspended end 32 of the fixed end 31. During the self-cleaning operation, the surface cleaning device operates, the suction port 14 sucks up the dirt, and the external airflow enters the receiving part 71 through the first ventilation opening 8 to form a suction path. At the same time, the hot air unit blows hot air into the receiving part 71 through the air outlet 73 to form a delivery path. Specifically, as Figure 14 As shown, the suction path includes a first airflow 10 located at the first vent 8, a second airflow 11 located in the ventilation gap between the front of the cleaning component 2 and the front of the receiving part 71, and a third airflow 12 located between the bottom of the cleaning component 2 and the bottom of the receiving part 71. When the surface cleaning device is placed on the base for automatic cleaning, the suction fan inside the surface cleaning device continues to work, and the hot air unit inside the base operates to blow a fourth airflow 13 to the cleaning component 2 through the air outlet 73. Therefore, during the self-cleaning operation, at the second airflow 11, the fourth airflow 12 blown out from the air outlet 73... 3. In the operation of the air-drying cleaning component 2, the fourth airflow 13 and the second airflow 11 on the suction path are mixed, which further increases the amount of ventilation airflow, thereby accelerating the removal of moisture from the outer surface of the cleaning component 2. Since there is a comb structure at the suction port 14, the air pressure is further increased at this point. Under the action of the suction fan, the airflow carries the moisture on the cleaning component 2 to move quickly into the suction port 14, and enters the suction pipe through the suction port 14. The moisture is quickly sucked into the sludge bucket or into the base and discharged from the base, thereby quickly drying the cleaning component 2 and further improving the drying efficiency.

[0122] Implementation Method Four: (e.g.) Figure 15As shown, the supporting surface is the surface 1 to be cleaned. In the second state, the fixing part 45 abuts against the surface 1 to support the cleaning component 2 to detach from the surface 1. That is, unlike the third embodiment above where the supporting surface is the receiving part 71 of the base, in this fourth embodiment, the surface 1 to be cleaned constitutes the supporting surface.

[0123] In this fourth embodiment, when the movable cover 4 moves to the second state, the fixing part 45 of the movable cover 4 can abut against the surface to be cleaned 1 to support the cleaning component 2 to detach from the surface to be cleaned 1. Taking self-cleaning operation as an example, when the fixing part 45 of the movable cover 4 is supported on the surface to be cleaned 1, the cleaning component 2 detaches from the surface to be cleaned 1. The floor brush housing 5, the fixing cover 3, and the movable cover 4 cooperate to form a cleaning chamber to accommodate the cleaning component 2. The suction fan in the surface cleaning device continues to work, and the external airflow enters the cleaning chamber through the first vent 8 and / or the second vent to form a suction path. The airflow passes through the outer surface of the cleaning component 2 to remove moisture from the outer surface of the cleaning component 2, achieving a drying effect on the cleaning component 2. For this fourth embodiment, the use of a base can be eliminated, reducing the cost of the cleaning equipment and the space occupied in storage. Moreover, in actual application, the user can choose a suitable location of the surface to be cleaned 1 as the support surface of the fixing part 45 of the movable cover 4 to clean the cleaning component 2, which is more flexible. Furthermore, when this fourth embodiment is applied to cleaning operations, it has a better cleaning effect for cleaning problems in special scenarios, such as low-lying areas and areas with heavy hair accumulation.

[0124] As a preferred embodiment of this Example 5, such as Figure 12 As shown, the fixing part 45 is provided with a support structure, which includes a first support part 451 and a second support part 452. A slot 453 with an opening facing away from the blocking part 44 is formed between the first support part 451 and the second support part 452. Both the first support part 451 and the second support part 452 are provided with an adsorption structure so that the fixing part 45 is adsorbed and supported on the support surface. Figure 14 As shown, when the movable cover 4 in this embodiment is applied to the situation described in Embodiment 3 above, the slot 453 can engage with the front baffle 72 at the front end of the receiving portion 71 to achieve a stable connection between the movable cover 4 and the base station 7, preventing the movable cover 4 from shaking under wind force. Figure 15As shown, when the movable cover 4 in this embodiment is applied to the situation in the fourth embodiment described above, since the brush of the surface cleaning device is also equipped with an auxiliary wheel, the surface cleaning device tends to move under the drive of the auxiliary wheel when it is running. By adding an adsorption structure, when the fixed part 45 of the movable cover 4 is supported on the support surface, it can be stably adsorbed and supported on the support surface through the adsorption structure, so as to prevent the surface cleaning device from shifting and ensure that it can be stably supported at the support position. This allows the surface cleaning device to stay at a certain position of the surface to be cleaned 1 and stably perform cleaning or self-cleaning operations.

[0125] This embodiment does not limit the adsorption structure: in one example, the first support 451 and the second support 452 are both wrapped with glue on all four sides to form an adsorption structure; in another example, the movable cover 4 is made of rubber or silicone with higher hardness so that the first support 451 and the second support 452 can form an adsorption structure at their respective ends due to their own properties.

[0126] In a preferred embodiment of this example 5, the movable cover 4 includes a main body and flanges that are provided on both sides of the main body and folded downwards. When the surface cleaning device is placed on the base, the flanges can cooperate with the side baffles on both sides of the receiving part 71 to cover the axial ends of the cleaning component 2, thereby reducing the probability of hot air leakage from the second vent. At the same time, it can also reduce the probability of dirt or hair being ejected from the axial ends of the self-cleaning component 2 during the self-cleaning operation, thus avoiding secondary contamination of the surface 1 to be cleaned.

[0127] In this embodiment 5, the movement mode of the movable cover 4 is not limited: In one embodiment, the movable cover 4 is swayably disposed on the fixed cover 3. The fixed cover 3 is provided with a swing rod 33, and the movable cover 4 is provided with a linkage groove adapted to the swing rod 33. The fixed cover 3 and the movable cover 4 are connected through the swing rod 33. The driving mechanism drives the swing rod 33 to swing, so as to drive the movable cover 4 to switch between the first state and the second state.

[0128] Example 6:

[0129] The principle of Example 6 is basically the same as that of Example 5, the difference being:

[0130] In this embodiment 6, the movable cover is movably disposed on the base station. In the first state, the movable cover is stored on one side of the base station. In the second state, the movable cover moves toward the fixed cover so that the shielding part 44 of the movable cover is stacked above the suspended end of the fixed cover or the shielding part 44 of the movable cover is aligned with the suspended end of the fixed cover along the extension direction of the fixed cover, so as to shield at least a part of the ventilation opening.

[0131] Example 7:

[0132] The principle of Example 7 is basically the same as that of Example 5, the difference being:

[0133] like Figure 16 As shown, the front end of the cleaning component and the front end of the base 7 have a certain distance a. The floor brush is also provided with a fixed cover 3 covering the cleaning component. The fixed cover 3 includes a suspended end 32 that covers the cleaning component. It also includes a movable cover 4 that covers at least part of the distance a. The movable cover 4 includes a blocking part 44. The blocking part 44, the base 7, and the suspended end 32 cooperate to form a cleaning chamber that accommodates the cleaning component. The upper part of the cleaning chamber is provided with a first ventilation opening 8, which is formed on the suspended end 32 and / or the blocking part 44. This technical solution is simple and easy to implement. During the automatic cleaning and drying of the cleaning components, dirt (which includes not only granular or clay-like solid dirt but also dirty liquids such as sewage, spilled soy sauce, beverages, and juices) is not 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 7. Furthermore, the cleaning chamber can effectively exchange airflow with the outside environment through the first ventilation port 8, thereby reducing drying time and improving drying efficiency. In addition, when the floor brush is placed on the base 7, it will not collide or interfere with the movable cover 4, facilitating the placement and removal of the surface cleaning device. When the cleaning components rotate under the drive motor, the movable cover 4 will not exert a large reaction force on the cleaning components, preventing excessive wear and tear on the drive motor and resulting in overheating. Simultaneously, there is no vibration during the self-cleaning process, thus reducing noise.

[0134] In this embodiment, the cleaning component includes a roller brush and a side plate connected to the roller brush (not shown in the figure). The scraping component 6 includes a scraper and comb teeth. The floor brush includes an upper housing and a lower housing. The lower housing has a roller brush cavity at its front and a receiving cavity at its rear (not shown in the figure). The upper housing is fastened to the receiving cavity of the lower housing. The front side wall of the lower housing is provided with a water distribution component, a scraping component 6, and a suction port 14 facing the cleaning component from top to bottom. A floor scraper is also provided below the suction port 14. The floor scraper is located at the front end of the lower housing. The drive motor (not shown in the figure) that drives the cleaning component to rotate is located inside the floor brush. One end of the suction pipe is connected to and communicates with the suction port 14. A part of the suction pipe is located in the receiving cavity, and the other end extends upward from the receiving cavity and communicates with the sludge bucket on the machine body. The cleaning component is installed in the roller brush cavity. The fixing cover 3 covers at least part of the cleaning component. The base 7 includes a tray 77 for holding the floor brush and a bottom shell. The tray 77 is fastened to the bottom shell to form a receiving cavity. The front of the tray 77 is provided with a cleaning groove 711, and the rear of the tray 77 is also provided with a charging base. The front end of the tray 77 is also provided with a front baffle 72 and side baffles 74 located on the left and right sides of the cleaning groove 711 connected to the front baffle 72. The front baffle 72 has a downward-opening inner cavity 710, with the opening of the inner cavity 710 facing the receiving cavity. The first wall 75 of the inner cavity 710 is connected to the tray 77, and the second wall 76 of the inner cavity 710 is connected to the bottom shell, so that the inner cavity 710 and the receiving cavity are connected and communicate. The front end of the cleaning component and the front end of the base 7 have a certain distance a, that is, there is a distance a between the front end of the roller brush and the first wall 75 of the front baffle 72. The projection of the suspended end 32 of the fixed cover 3 on the horizontal plane is at most The front end of the cleaning component is aligned with the projection on the horizontal plane. In this embodiment, the length of the cleaning tank 711 is greater than the length of the roller brush. The floor brush is placed on the tray 77 of the base 7, and the roller brush is located above the cleaning tank 711. Its projection falls inside the cleaning tank 711. The bristles of the roller brush form a ventilation gap with the cleaning tank 711. There is a certain gap between the left and right sides of the roller brush and the side baffles 74 of the base 7. The front part of the central axis of the roller brush is exposed from the front of the suspended end 32, so that the front end of the roller brush is not completely covered by the fixed cover 3. It also includes a movable cover 4 whose length is at least the length of the cleaning component. That is, the length of the movable cover 4 is longer than the length of the roller brush. The movable cover 4, the base 7, and the fixed cover 3 cooperate to form a cleaning cavity that accommodates the cleaning component. The upper part of the cleaning cavity is provided with a first ventilation opening 8, which is formed at the front end of the suspended end 32. The movable cover 4 includes a blocking part 44 and a fixing part 45. The fixing part 45 is located in front of the blocking part 44 and is installed on the front baffle 72. The blocking part 44 extends toward the fixing cover 3. The fixing part 45 is provided with a slot 453. The upper end of the front baffle 72 extends into the slot 453, thereby fixing the movable cover 4 to the front end of the base 7.

[0135] In this embodiment, the roller brush can move back and forth. The brush is equipped with a power component (not shown in the figure). 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 7 to automatically clean the roller brush, the roller brush has two working positions. During the self-cleaning operation, the roller brush can be moved back and forth by controlling the power component, so that the roller brush can be in the first working position or the second working position for rotation cleaning. When the roller brush is in the first working position, the roller brush is in contact with the scraper. The scraper and / or comb teeth continuously scrape the bristles of the rotating cleaning component, scraping off the dirt on the cleaning component, so that the suction fan can suck the dirt into the suction port 14 and collect it into the sewage tank. When the roller brush is in the second working position, there is a gap between the roller brush and the scraper, and the distance between the cleaning component and the suction port 14 is increased. The cleaning component is moved back and forth by the power component, which realizes the adjustment of 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 on the cleaning component and / or comb teeth are also pulled, thereby loosening the dirt or hair and other tangled objects. This can effectively peel the hair and other tangled objects wrapped on the roller brush from the roller brush, or make the dirt in the suction port 14 and / or roller brush cavity easier to wash off due to the loosening. When the cleaning component moves to the second working position with a larger gap with the suction port 14, 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 14 and then sucked into the collection bucket. There is no need for manual handling by the user. At the same time, the dirt suction effect is better, which makes the self-cleaning effect of the cleaning component better and the cleaning more thorough. When the cleaning component operates in the first and second working positions, intermittently changing its rotation direction is more effective in cleaning dirt. This change in 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 stand upright, making them easier to dry. Figure 2As shown in the front-back and left-right directions, the shielding part 44 is located at the rear of the movable cover 4, and the fixing part 45 is located at the front of the movable cover 4. In this embodiment, the shielding part 44 includes a transverse section 46 and a curved section 47. The curved section 47 is connected to the fixing part 45. The inner surface of the curved section 47 is arc-shaped and extends along the extension direction of the suspended end 32 of the fixed cover 3. The rear of the transverse section 46 is provided with a narrow notch, and the notch extends along the length direction of the movable cover 4. The transverse sections 46 on both sides of the notch abut against the front end of the fixed cover 3 so that the notch does not contact the fixed cover 3 to form a slender first ventilation opening 8. The first ventilation opening 8 is located at the rear end of the shielding part 44 of the movable cover 4 and close to it. The fixed cover 3 is positioned at the front end, so that the first vent 8 is located at the top of the cleaning chamber and is a certain distance from the roller brush. Therefore, during the self-cleaning operation, 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 of the drive motor. During the rotation, the hair tangled material is more easily detached from the roller brush due to centrifugal force. Since the notch is long and narrow, the total area of ​​the first vent 8 is smaller than the area of ​​the spacing a, and it is located at the top of the cleaning chamber. Therefore, hair tangled material and other dirt will not be squeezed out of the cleaning chamber from the first vent 8, but will move with the roller brush to the suction port 14, and will be more easily sucked into the suction port 14. The shielding part 44 of the movable cover 4 is set higher than the side baffle 74 and the front baffle 72, and the two sides of the shielding part 44 are open. Therefore, the left and right sides of the shielding part 44 and the upper end of the side baffle 74 form a second ventilation port 15. Since there is a certain gap between the left and right sides of the roller brush and the side baffle 74 of the base 7, the gap and the second ventilation port 15 are connected to form a side air channel 78 connected to the cleaning chamber. Since the second ventilation port 15 is set on the side and is perpendicular to the rotation direction of the roller brush, dirt such as hair will not be squeezed out from the second ventilation port 15, thus ensuring that the ground near the base 7 will not be contaminated. The first ventilation port 8 is set at the rear of the shielding part 44, so that when the floor brush is placed on the base 7, there is no obstruction. The shielding part 44 itself is elastic, so the floor brush is easier to put in. At the same time, the movable cover 4 and the fixed cover 3 are in elastic contact. When the cleaning component rotates, it avoids the fixed cover 3 from vibrating slightly with the cleaning component, so that the two will not generate noise due to slight vibration.

[0136] After automatic cleaning is completed, the suction fan is activated. The suction fan draws the liquid from the cleaning tank 711 or the roller brush into the suction port 14, and then into the waste collection bucket through the suction port 14. Under the action of the suction fan, although the total area of ​​the first ventilation port 8 is smaller than the area of ​​the spacing a, the presence of the second ventilation port 15 further increases the area of ​​airflow exchange between the cleaning chamber and the outside. The outside airflow enters the cleaning chamber from the second ventilation port 15 located on both sides of the roller brush and the first ventilation port 8 located on the movable cover 4, and flows through the side air duct 78 and the passage. During the air gap, due to the narrow side air duct 78 and ventilation gap, the airflow is rapidly pressurized here, quickly carrying the moisture on the brush cloth and its bristles into the suction port 14, and then into the sludge collection bucket through the suction pipe, thus improving the drying efficiency of the brush cloth and its bristles. Due to the presence of the first ventilation port 8 and the second ventilation port 15, and the sufficient ventilation area of ​​the cleaning chamber, the external airflow continuously enters the cleaning chamber, accelerating the flow and energy exchange between the airflow in the cleaning chamber and the external airflow, thus improving the drying efficiency of the brush cloth and its bristles.

[0137] In this embodiment, the surface cleaning device is a floor scrubber. The surface cleaning device includes a water supply system, a vacuuming system, a machine body, and a floor brush. The lower part of the machine body and the rear part of the floor brush are pivotally connected, and the upper end of the machine body is connected to the handle via a handle rod. A wastewater tank and a clean water tank are respectively provided at the front and rear of the machine body.

[0138] In this embodiment, the cleaning component consists of a single roller fitted with a brush cloth, the outer surface of which has bristles. The surface cleaning device has a water supply system that provides clean cleaning water or liquid to the cleaning component to wet the brush cloth, allowing the roller and brush cloth to rotate under the drive of a motor, thus continuously scrubbing the floor with the brush cloth and its bristles. After prolonged use, the bristles and the entire brush cloth will become dirty and need to be placed on the base 7 for self-cleaning. After self-cleaning, to prevent the bristles from becoming moldy due to moisture, the brush cloth and its bristles are generally dehydrated and dried, or the dehydration and drying process can be performed simultaneously with the self-cleaning process. The floor brush is equipped with scraper blades, water spray nozzles, and a suction port 14. During self-cleaning, the surface cleaning device is placed on the tray 77 of the base 7, with the floor brush positioned on the tray 77. The auxiliary wheel of the floor brush is located in a limiting groove on the tray 77, ensuring the cleaning component is positioned above the cleaning tank 711. The water spray nozzles spray water onto the cleaning component, which rotates under the action of the drive motor. The scraper blades continuously scrape the cleaning component, thus removing dirt or sludge. The suction system generally includes a vacuum assembly. The system includes components (such as a blower or air pump) and a suction pipe. The wastewater tank is connected to the suction port 14 via the suction pipe. The suction port 14 is directly opposite the cleaning component. The vacuum component draws air from the wastewater tank, creating a negative pressure inside the tank. This causes the dirt or grime on the surface to be cleaned 1, or the dirt or grime scraped off the cleaning component by the scraper, to be drawn into the wastewater tank through the suction port 14 and the suction pipe. At the same time, the brush cloth and bristles of the roller brush are dehydrated and dried. This process is repeated until the self-cleaning process of the surface cleaning device is completed.

[0139] In this embodiment, the base 7 includes a generally flat tray 77, and a charging base is installed at the rear of the tray 77. The charging base is used to support the protrusion on the rear side of the surface cleaning device and to charge the battery inside the device.

[0140] In this embodiment, the cleaning component moves back and forth by 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 7, thus preventing the cleaning component from interfering with the base 7 and preventing the cleaning component from touching the base 7 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, the outside air is continuously drawn into the cleaning chamber from the first vent 8, and that there is a sufficient amount of air to contact the surface of the cleaning component in 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 the bristles on it, or that the ventilation area in contact with the roller brush and the bristles on it is sufficient to allow it to dry quickly, and to ensure that the roller brush does not interfere with the elastic sealing cover or the front baffle 72 when it moves back and forth.

[0141] In this embodiment, the cleaning groove 711 is configured as a square groove to adapt to the structural feature of the floor brush, whose vertical projection is approximately square. The cleaning groove 711 is located at the front of the tray 77, corresponding to the structural feature of the cleaning component being located at the front of the floor brush. The front baffle 72 at the front end of the tray 77 protrudes upward from the cleaning groove 711, thereby defining the front boundary of the cleaning groove 711; specifically, the surface of the front baffle 72 facing the cleaning groove 711 is curved, that is, the surface of the first wall 75 of the inner cavity 710 is curved, so as to achieve a smooth transition between the front baffle 72 and the bottom surface of the cleaning groove 711. Correspondingly, side baffles 74 are also provided at the left and right ends of the tray 77, and the two side baffles 74 are formed on the left and right edges that define the left and right boundaries of the cleaning groove 711. The left and right edges are symmetrically arranged, and the left edge, the front baffle 72, and the right edge are connected in sequence to form a U-shaped structure. By using a U-shaped edging, the boundary of the cleaning tank 711 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 movable cover 4.

[0142] It is understandable that the first vent 8 and the second vents 15 on both sides of the movable cover 4 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 74 can be set to be unequal on the left and right sides, or the top shapes of the side baffles 74 on the left and right sides are inconsistent, etc. As long as the total ventilation area of ​​the first vent 8 and / or the second vent 15 is less than the ventilation area of ​​the spacing a, so that the amount of external airflow can enter through the first vent 8 is sufficient, and dirt will not be thrown out or squeezed out from the first vent 8; 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.

[0143] Example 8:

[0144] The difference between Example 8 and Example 7 is that the structure of the movable cover 4 is different, and the structure of the base 7 is also different.

[0145] It also includes a drying device (not shown in the figure), which includes a heating element 42 and a fan. The fan and the heating element 42 are located in the receiving cavity. The left and right sides of the cleaning tank 711 are provided with side baffles 74 connected to the front baffle 72. The front baffle 72 has a cavity with an opening facing downwards. The cavity is connected to the receiving cavity. The inner wall of the cavity is provided with an air outlet 73 facing the cleaning component. The first vent 8 is located away from the air outlet 73. During automatic cleaning, the heating element 42 raises the temperature of the airflow in the receiving cavity. The fan blows the hot airflow in the receiving cavity through the air outlet 73 to the cleaning component. This increases the temperature of the airflow blowing onto the bristles of the component, causing the moisture on the bristles to evaporate and the bristles to dry quickly. Since the first vent 8 is located away from the air outlet 73, the amount of heat lost from the blown airflow is reduced. At the same time, the presence of the first vent 8 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 roller brush cloth and its bristles on the cleaning component can be dried quickly.

[0146] In this embodiment, the movable cover 4 includes a blocking part 44 and a fixing part 45, such as Figure 17 and Figure 18As shown, the shielding part 44 is located at the rear of the movable cover 4, and the fixing part 45 is located at the front of the movable cover 4. In this embodiment, the shielding part 44 includes a transverse section 46, a curved section 47, and a side baffle 48. The curved section 47 is connected to the fixing part 45. The inner surface of the curved section 47 is arc-shaped. The curved section 47 extends along the extension direction of the suspended end 32 of the fixed cover 3. The first ventilation opening 8 is a plurality of through holes provided on the transverse section 46. 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 transverse section 46. The plurality of through holes are located in front of the suspended end 32 of the fixed cover 3 and close to the suspended end 32. The side baffle 48 is provided at both ends of the movable cover 4 and extends downward below the top of the side baffle 74. There is a gap between the side baffle 48 and the inner wall of the side baffle 74. The gap between the two ends of the movable cover 4 and the top of the side baffle 74 is blocked, that is, the second vent 15 is blocked, so that the side baffle 48 and the side baffle 74 form a side air channel 78 located on the outside of the two ends of the movable cover 4, in order to compensate for the flow and energy exchange between the external airflow and the cleaning chamber; the presence of the baffle 49 can effectively block dirt and hair and other tangled objects that have detached from the tufts of the cleaning component from being squeezed out or thrown out from the two ends of the movable cover 4; when the suction fan is not started, the hot airflow heated by the heating element in the receiving chamber blows from the air outlet 73 to the cleaning component, which can effectively dry the cleaning component and reduce the loss of the cleaning component from the side first vent 8, while the airflow can enter the cleaning chamber through the side air channel 78, 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 transverse section 46, and ensuring that the total ventilation area of ​​these holes is less than 'a', not only is the ventilation between the cleaning components on the floor brush and the outside environment guaranteed, but the first ventilation port 8 is also configured as multiple holes located near the fixed cover 3. Each hole has a relatively small area, preventing dirt from being flung out during the rotation of the cleaning components, and preventing tangled hair from being squeezed out of the air. This avoids contaminating the ground near the base 7 and also prevents tangled hair from being squeezed out from the gap 'a' between the front end of the cleaning components and the front end of the base 7 (i.e., the front baffle 72). This allows tangled hair to be detached from the roller brush and move with the cleaning components to the suction port 14 when the suction fan is working, where it is sucked into the wastewater tank for effective cleaning. Simultaneously, After automatic cleaning, during the drying process when the suction fan starts, due to the small size of the side air duct 78 and the need for the outside airflow to bend before entering, the amount of outside airflow that can enter through the side air duct 78 is small. The total amount of airflow entering the cleaning chamber from the small amount of airflow entering through the side air duct 78 and the airflow entering through the multiple through holes on the transverse section 46 is reasonable. When mixed with the hot airflow from the air outlet 73, the hot airflow will not decrease rapidly after mixing. Moreover, the operation of the suction fan avoids the loss of hot air from the first vent 8 and the side air duct 78, 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.

[0147] Of course, it's understandable that the movable cover 4 could also adopt such a structure: such as Figure 19 As shown, the shape of the arc-shaped cover is consistent with the shape of the suspended end 32 of the fixed cover 3. The rear part of the arc-shaped cover is fitted to the front part of the suspended end 32 of the fixed cover 3, and the arc-shaped cover extends along the shape of the fixed cover 3. The first ventilation opening 8 is located in front of the suspended end 32 of the fixed cover 3, and the first ventilation opening 8 is composed of multiple holes provided at the rear part of the arc-shaped cover; or, the shielding part 44 is an arc-shaped cover, such as... Figure 20As shown, the shape of the arc-shaped cover is consistent with the shape of the suspended end 32 of the fixed cover 3. The shielding part 44 extends rearward and covers the front part of the suspended end 32, so that the two have a partial overlapping area. The first vent 8 is a plurality of through holes provided on the arc-shaped cover near the bending part 410, and is located in the overlapping area of ​​the two. The rear part of the shielding part 44 is provided with a bending part 410 extending radially from the rear part of the shielding part 44 towards the fixed cover 3. The bending part 410 abuts against the front part of the suspended end 32 of the fixed cover 3, so that... The shielding part 44 has a gap with the fixed cover 3 to form a circumferential air duct 79. Alternatively, the first vent 8 can be provided on the bend 410. The first vent 8 can be multiple strip-shaped holes provided on the bend 410, or it can be a long strip-shaped notch provided at the end of the bend 410. The external airflow enters through the first vent 8 and can flow along the circumferential air duct 79 into the cleaning chamber. Alternatively, a shielding piece 49 can also be provided above the first vent 8 of the movable cover 4, such as... Figure 21 As shown, the shielding plate 49 extends forward from the rear end of the shielding part 44 to cover the first vent 8. This structure effectively prevents sewage from being thrown out of the through hole during automatic cleaning operations, and ensures effective exchange and circulation between the external airflow and the airflow inside the cleaning chamber. It 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.

[0148] In this embodiment, the front baffle 72 includes a first wall 75 located at the rear, a second wall 76 located at the front, and left and right walls located on the left and right sides. The tops of the first wall 75, the second wall 76, the left wall, and the right wall are connected to form an inner cavity 710 with an opening at the lower end. The air outlet 73 is located on the surface of the front baffle 72 facing the cleaning tank 711, that is, on the surface of the first wall 75 of the inner cavity 710. The movable cover 4 is located above the air outlet 73, and the distance between the movable cover 4 and the cleaning component is 13mm. This arrangement allows the hot air discharged from the air outlet 73 to directly enter the cleaning tank. Inside the cavity, the distance between the airflow discharged from the air outlet 73 and the cleaning component is reduced, preventing the air discharged from the air outlet 73 from losing temperature rapidly before reaching the cleaning component. This ensures that the airflow entering the cleaning cavity through the first vent 8 is no greater than the airflow discharged from the air outlet 73, thereby accelerating the ventilation volume entering the cleaning cavity through the first vent 8 and the temperature of the mixed air. This facilitates the use of a uniformly heated airflow to dry the entire cleaning component, thus quickly achieving energy exchange between the water vapor and the mixed air on the cleaning component, allowing the brush cloth and its bristles on the cleaning component to dry quickly.

[0149] Of course, it is understandable that we can also make square holes, round holes, etc. on the side baffle 48 to form a second ventilation opening 15. The second ventilation opening 15 can also be a notch on the side baffle 48. When the movable cover 4 is located on the front side of the floor brush and forms a cleaning chamber with the side baffle 74, front baffle 72 and fixed cover 3 of the base 7, there are notches on both sides of the side baffle 48, so that the side baffle 48 will not be completely connected with the side baffle 74, and thus will not block both sides of the cleaning chamber; that is, the second ventilation opening 15 at this time is formed by the notch of the side baffle 48 and the other structures on the side baffle 74.

[0150] Example 9:

[0151] The difference between this embodiment and embodiment 8 is that the structure of the first ventilation opening 8 is different.

[0152] The surface cleaning device of the present invention includes a surface cleaning apparatus and a base 7, wherein the front end of the base 7 is provided with a front baffle 72, as shown below. Figure 22 As shown, the movable cover 4 includes a fixing part 45 and a blocking part 44. The fixing part 45 is located in front of the blocking part 44 and is installed on the front baffle 72. The rear end of the blocking part 44 extends towards the fixed cover 3. The blocking part 44 is an arc-shaped plate with the same shape as the fixed cover 3. The arc-shaped plate is located on a concentric circle on the outer periphery of the fixed cover 3, and its radius is larger than the radius of the fixed cover 3. The arc-shaped plate extends rearward to the front end of the suspended end 32 of the fixed cover 3. The ends of the two are aligned but do not contact each other. The rear end of the blocking part 44 and the front end of the suspended end 32 of the fixed cover 3 form a first distance b. The first vent 8 is formed by the first distance b, where a > b. In this structure, a is 10mm and b is 4mm. This design makes it easier to place the brush on the base 7, while reducing heat loss from the hot air inside the base 7. This ensures the circulation and energy exchange between the external air and the air inside the cleaning chamber. Furthermore, this movable cover 4 structure is simple and easy to manufacture. This structure also facilitates the entry of external air into the cleaning chamber. The external airflow can mix more quickly with the hot air generated by the drying device inside the base 7, and during the process of being sucked into the suction port 14 within the cleaning chamber, it quickly removes moisture from the brush cloth and bristles of the cleaning component, thereby improving the drying efficiency of the cleaning component, especially the drying efficiency of the drying device inside the base 7. During the automatic cleaning operation of the cleaning component, even when the roller brush is rotating in the forward direction, a process of reversing the roller brush is added to ensure that the brush cloth and bristles on the cleaning component are thoroughly cleaned. During the reverse rotation of the roller brush, since the first ventilation port 8 is located at the radial alignment of the shielding part 44 and the suspended end 32, and is located above the cleaning component, when the cleaning component rotates in the forward direction, the sewage and dirt follow the forward rotation of the cleaning component. Figure 22The clockwise rotation of the cleaning component, along with the forward and backward movement of the cleaning component and its forward rotation in the first and second working positions, ensures that even if some dirt or debris is detached from the roller brush due to centrifugal force, or if hair or other tangled material is detached from the roller brush, it will be thrown forward by centrifugal force, i.e., thrown towards the arc surface of the fixed cover 3 or the movable cover 4 and flow into the cleaning chamber along the arc surface, without being thrown out from the first vent 8. When the cleaning component rotates in the opposite direction, the dirt and debris will follow the cleaning component'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 fixed cover 3 and the movable cover 4, making it difficult for them to be squeezed out or thrown out from the radial first vent 8. This avoids contamination of the ground outside the base 7 and makes the cleaning component cleaner and more thorough, preventing the phenomenon of hair or tangled material being ejected from the first vent 8.

[0153] Of course, it is understandable that we can also extend the shielding part 44 further rearward, so that the shielding part 44 at least partially covers the circumferential overlap with the suspended end 32. The first vent 8 is formed by the gap between the outer wall of the rear end of the shielding part 44 and the circumferential overlap of the fixed cover 3. The circumferential overlap area of ​​the shielding part 44 and the suspended end 32 forms a circumferential air duct 79 connecting the first vent 8 and the cleaning chamber. Alternatively, we can adopt the following structure: side ribs extending radially downward are provided on both sides of the end of the shielding part 44, and the side ribs are fitted to both ends of the fixed cover 3. Alternatively, a bend 410 extending radially is provided at the end of the shielding part 44, and the first vent 8 is provided on the bend 410. The first vent 8 can be a long strip-shaped through hole or notch, or multiple strip-shaped holes arranged in a matrix on the bend 410. All of them will be blocked by the fixed cover 3 or the movable cover 4, change direction and fall back into the cleaning chamber, and be sucked away by the suction fan from the suction port 14, thus completely avoiding the ground outside the base 7 from being contaminated, and also preventing hair and other tangled objects from being squeezed out of the first ventilation port 8 through the circumferential air duct 79.

[0154] Of course, it is understandable that the blocking part 44 of the movable cover 4 can also be made of elastic material, such as hard rubber, or a structure with a metal sheet embedded in rubber.

[0155] Example 10:

[0156] The difference between this embodiment and embodiment 9 is that the installation structure of the movable cover 4 and its location are different.

[0157] The surface cleaning device described in this invention includes a surface cleaning unit and a base 7. Taking a floor scrubber as an example, the floor scrubber includes a body and a floor brush hinged thereto. The cleaning assembly includes a single roller brush and a side plate for mounting the roller brush on 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 assembly 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 assembly to move back and forth synchronously, thereby giving the cleaning assembly a first working position (e.g., contacting the scraping element 6). Figure 24 As shown), the power component drives the cleaning assembly forward to a second working position with a gap between it and the scraper (as shown). Figure 25 As shown, the drive motor that drives the roller brush is built into the roller brush cylinder. After the cleaning component is in the first or second working position, it can rotate under the drive motor, thereby 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 scraping part 6 does not come into contact with the roller brush 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 7 for self-cleaning of the roller brush, the cleaning component also has two working positions, such as... Figure 24 and Figure 25 As shown, during the switching between the two positions of the cleaning component's roller brush, it can move the dirt and loosen it, or pull and loosen the tangled matter 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 hair from the roller brush. Water rinsing continues, and the removed dirt or hair is collected into the wastewater tank through the suction port 14. This can better complete the automatic cleaning of the cleaning component, and the cleaning effect is good.

[0158] In this embodiment, the movable cover 4 is disposed on the fixed cover 3, such as... Figure 23As shown, the movable cover 4 is slidably mounted on the fixed cover 3. During automatic cleaning, the floor brush of the surface cleaning device is placed on the base 7. The movable cover 4, the fixed cover 3, and part of the base 7 form a cleaning chamber that encloses the cleaning components. The movable cover 4 is mounted on the fixed cover 3, as... Figure 23 and Figure 25 As shown, the movable cover 4 includes a fixing part 45 and a blocking part 44. The blocking part 44 is located in front of the fixing part 45 and extends towards the front baffle 72. The front part of the blocking part 44 is provided with a support structure. The blocking part 44 is slidably mounted on the fixed cover 3 so that the movable cover 4 can move along the fixed cover 3 until its fixing part 45 stops on the front baffle 72. Both ends of the blocking part 44 are provided with swing rods 33. In this embodiment, the movable cover 4 is an arc-shaped cover located above the fixed cover 3, such as... Figure 23 As shown, the arc-shaped cover and the fixed cover 3 are concentrically arranged, and the radius of the arc-shaped cover is larger than the radius of the fixed cover 3, so that there is a certain distance between them. The fixed cover 3 has linkage grooves at both ends. The upper end of the swing rod 33 is fixedly connected to the shielding part 44, and the lower end of the swing rod 33 is fixed in the linkage groove. A power component is provided in the fixed cover 3. The power component can drive the swing rod 33 to move along the linkage groove of the fixed cover 3. The power component can be set separately. Of course, it is understood that the power component can also be set in the receiving cavity of the floor brush, or it can share a power component with the cleaning component, and a transmission structure connected to the swing rod 33 is set. A clutch structure is set to connect or disconnect the swing rod 33 or the roller brush from the power component, so as to control the movement of the movable cover 4 or the roller brush respectively. When the floor brush is placed on the base 7, as Figure 24 and Figure 25 As shown, the power component drives the swing arm 33 of the movable cover 4 to slide along the linkage groove until it abuts against the support structure at the front of the fixed part 45 and the front baffle 72 of the base 7, thereby blocking the distance a between the movable cover 4 and the cleaning component and the front baffle 72 of the base 7. At the same time, at least part of the rear part of the blocking part 44 of the movable cover 4 overlaps with the rear part of the suspended end 32 of the fixed cover 3, so that the movable cover 4 and the suspended end 32 of the fixed cover 3 have a circumferential overlapping area. The outer wall of the overlap between the rear port of the blocking part 44 and the fixed cover 3 forms a first ventilation opening 8 arranged radially along the blocking part 44. The circumferential overlapping area of ​​the two forms a circumferential air duct 79. This structure is more conducive to the placement of the floor brush. At the same time, since the fixed cover 3 can generally be removed, the movable cover 4 can also be removed together with the fixed cover 3 for rinsing, thus ensuring the cleanliness and hygiene of the movable cover 4.

[0159] In this embodiment, since the movable cover 4 is mounted on the fixed cover 3 and can slide along the fixed cover 3, when the surface cleaning device cleans the surface to be cleaned, such as Figure 23 and Figure 15As shown, the roller brush can be briefly reversed. When the roller brush rotates in the reverse direction, the movable cover 4 can be rotated clockwise along the fixed cover 3 to the front of the roller brush, or the movable cover 4 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 movable cover 4 prevents the waste liquid from splashing onto the already wiped ground and causing secondary contamination. Instead, the waste liquid returns to the roller brush after being wiped again by the roller brush, or is sucked into the suction port 14 by the suction fan after being wiped again by the roller brush. If the roller brush is entangled with debris at this time, the power component can be used to move the roller brush back and forth, and then stop the roller brush in the first and second working positions before rotating in both directions to untangle the debris from the roller brush and suck it into the suction port 14 by the suction fan. At this time, a gripping structure or a suction cup structure can be set on the support structure so that the movable cover 4 can be fixed on the surface to be cleaned, so that it forms a cleaning chamber with the surface to be cleaned and the fixed cover 3. Alternatively, after the ground brush is placed on the base 7, the movable cover 4 can be adsorbed onto the front baffle 72 by the suction cup structure.

[0160] In this embodiment, when the floor brush is placed on the base 7 for self-cleaning, dirt or tangled hair will not be thrown out from the first vent 8, nor will it be thrown out from the base 7 to contaminate the ground. When drying the cleaning components, the airflow in 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 in the cleaning chamber is also effectively drawn to the suction port 14 and collected into the wastewater tank along with the airflow, ensuring the cleaning effect and improving the drying efficiency.

[0161] Of course, understandably, we could also set up two sets of swing arms, such as... Figure 14 As shown, two sets of swing arms are respectively positioned at the rear and middle of the shielding part 44 to better support the movable cover 4 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 fixed cover 3, with the first vent 8 positioned at the rear of the shielding part 44 of the arc-shaped cover. A guide groove is provided on the fixed cover 3, 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 7, the power component drives the arc-shaped cover to move along the extension direction of the fixed cover 3. The arc-shaped cover moves to a position above the distance between the cleaning component and the front baffle 72 of the base 7, and after the stop part abuts against the front baffle 72, the first vent 8 is located at the front end of the shielding part 44 of the fixed cover 3 and protrudes from its front end. Of course, the first vent 8 can also be partially exposed. 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.

[0162] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0163] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0164] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A surface cleaning device, comprising a surface cleaning apparatus, the surface cleaning apparatus including a floor brush, the floor brush including a floor brush housing, a cleaning component, and a scraping element that abuts against the cleaning component to scrape the cleaning component, characterized in that, The floor brush also includes a movable cover over the cleaning component, and the surface cleaning device also includes a drive mechanism for driving the movable cover to move so that the movable cover has a first state and a second state, and the cleaning component rotates to perform cleaning operations.

2. The surface cleaning device according to claim 1, characterized in that, The movable cover has a scooping portion extending toward the cleaning component. In the first state, the movable cover has a gap between the scooping portion and the cleaning component. In the second state, the movable cover has the scooping portion abutting against the cleaning component to scoop up the tufts of hair on the cleaning component as it changes its rotation direction.

3. The surface cleaning device according to claim 2, characterized in that, The movable cover has a connecting end connected to the floor brush housing and a free end away from the connecting end. The shovel portion is disposed at the free end. The surface cleaning device also includes a base. The base has a receiving portion for accommodating the floor brush. The receiving portion is provided with an air outlet for supplying air to the cleaning assembly. When the floor brush is housed in the receiving portion, the cleaning assembly rotates to perform a self-cleaning operation. The shovel portion is arranged adjacent to the air outlet.

4. The surface cleaning device according to claim 1, characterized in that, The movable cover is provided with a heating element, the heating element having a heat transfer surface disposed toward the cleaning component assembly. When the movable cover is in the first state, the heat transfer surface is at least partially in contact with the cleaning component. When the movable cover is in the second state, the heat transfer surface has a gap with the cleaning component.

5. A surface cleaning device according to claim 1, characterized in that, The movable cover has a scraping portion extending toward the upper surface of the scraper. When the movable cover is in the first state, the scraping portion is located away from the cleaning component. When the movable cover is in the second state, the scraping portion is located close to the cleaning component. During the process of the movable cover switching from the first state to the second state, the scraping portion moves with the movable cover to the contact end between the scraper and the cleaning component to wipe and transport the dirt on the upper surface of the scraper to the suction port.

6. A surface cleaning device according to any one of claims 1 to 5, characterized in that, The floor brush also includes a fixed cover that covers the cleaning assembly and is located outside the movable cover, the movable cover being movably disposed on the fixed cover and / or the floor brush housing.

7. The surface cleaning device according to claim 1, characterized in that, The floor brush further includes a fixed cover that covers the cleaning component and is located inside the movable cover. The movable cover is movably disposed on the fixed cover and / or the floor brush housing to have the first state and the second state. The fixed cover has a fixed end connected to the floor brush housing and a suspended end away from the fixed end. The movable cover has a shielding portion and a fixed portion away from the shielding portion. In the first state, the movable cover is stacked entirely on top of the fixed cover; In the second state, the shielding part is stacked above the suspended end or the shielding part is aligned with the suspended end along the extension direction of the fixed cover, the fixed part can be supported on the support surface, and the cleaning component can be lifted.

8. A surface cleaning device according to claim 7, characterized in that, The surface cleaning device further includes a base having a receiving portion for accommodating the floor brush, the receiving portion being provided with an air outlet for supplying air to the cleaning assembly; the cleaning assembly rotates to perform a self-cleaning operation; In the first state, a ventilation opening is formed between the fixed cover and the receiving part; In the second state, the receiving part is provided with the supporting surface, a first vent exists between the lower surface of the shielding part and the upper surface of the suspended end, and / or a second vent exists between the side of the movable cover and the side wall of the floor brush housing.

9. A surface cleaning device according to claim 7, characterized in that, The supporting surface is the surface to be cleaned. In the second state, the fixing part abuts against the surface to be cleaned to support the cleaning component to detach from the surface to be cleaned.

10. A surface cleaning device according to claim 8 or 9, characterized in that, The fixing part is provided with a support structure, which includes a first support part and a second support part. A slot with an opening facing away from the blocking part is formed between the first support part and the second support part. Both the first support part and the second support part are provided with an adsorption structure so that the fixing part is adsorbed and supported on the support surface.

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