Surface cleaning device

Abstract

The utility model discloses a surface cleaning device which comprises a floor brush shell, a cleaning part, a handle assembly and a dirt scraping part, the floor brush shell is provided with a first driving device used for driving the cleaning part to rotate relative to the dirt scraping part, and the cleaning part is provided with a first end connected with the handle assembly and a second end opposite to the first end. The floor brush shell is further provided with a second driving device, and the second driving device is used for driving the cleaning piece to act so that the cleaning piece can have a first state and a second state. The roller brush axis of the cleaning piece in the first state is not parallel to the roller brush axis of the cleaning piece in the second state, so that when air in the second state flows in the roller brush axis direction of the cleaning piece, the air speeds are different, and when the air flows in the air directions of the different air speeds, eddy currents can be generated near the dirt suction opening due to the speed difference; the vortex can disturb dirt attached to the periphery of the dirt suction port, so that the dirt can be conveniently stripped from the floor brush shell on the periphery of the dirt suction port, and the cleaning effect on the dirt near the dirt suction port is improved.

Description

Technical Field

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

[0002] For surface cleaning devices that utilize live water cleaning technology, such as floor scrubbers, vacuum cleaners, and sweepers, clean water is continuously sprayed onto the surface of the cleaning components during operation. The moistened components rotate and contact the surface to be cleaned, thus achieving cleaning. As the components rotate, they adsorb dirt onto their outer surface, which is then scraped off by scraping components that are in close contact with the components, significantly improving the cleaning ability.

[0003] In existing surface cleaning devices, the scraping component is constantly in contact with the cleaning component to scrape away dirt. However, this contact also causes water to drain from the cleaning component. At the beginning of the cleaning process, the cleaning solution's wetting effect on the outer surface of the cleaning component is poor, failing to achieve full wetting in a short time. Combined with the water draining effect of the scraping component, the cleaning solution's penetration level on the cleaning component cannot reach the desired level quickly enough. Therefore, at the start of the cleaning process, the cleaning effect on the surface to be cleaned is difficult to achieve the expected results. During the self-cleaning operation of the surface cleaning device, the contact between the scraping component and the cleaning component causes some dirt to remain on the upper surface of the scraping component, making it difficult to remove. Over time, the dirt adhering to the scraping component can cause secondary contamination of the cleaning component. Furthermore, whether during cleaning operations or self-cleaning operations, the outer surface of the cleaning parts will have problems with easily tangled materials such as hair and fine threads, as well as strongly adhering dirt such as clay and cat litter. The contact state between the scraper and the cleaning parts does not have the beneficial effect of untangling easily tangled materials or making it easier to remove strongly adhering dirt. On the contrary, it will cause the hair to become tangled even tighter and push the strongly adhering dirt deeper into the root of the cleaning parts' bristles.

[0004] Existing technology discloses a cleaning device, including a cleaning drive component, a transmission assembly, a scraper, and a limiting housing. The cleaning drive component is drivenly connected to the transmission assembly, and the output end of the transmission assembly is drivenly connected to the scraper. The transmission assembly can drive the scraper to move toward or away from the cleaning component, so that the scraper has a first position and a second position that abuts against the cleaning component, and a third position that is spaced apart from the cleaning component. The limiting housing is installed inside the machine body and has an opening facing the cleaning component. At least a portion of the scraper is movably accommodated inside the limiting housing. In this prior art, the scraper moves by extending and retracting back and forth under the drive of the transmission assembly. By moving the scraper, the distance between the scraper and the cleaning component is changed, thereby achieving a pulling effect on easily tangled objects, allowing the easily tangled objects to loosen under the pulling, so that they can be collected by the suction port. However, the movable nature of the scraper blade significantly increases the sealing cost between the scraper blade and the limiting housing. If the seal is not secure, cleaning fluid and dirt can easily enter the brush housing through the joint gap between the scraper blade and the limiting housing, which not only obstructs the movement of the scraper blade but also affects the normal operation of the electronic components inside the brush housing.

[0005] The prior art also discloses a surface cleaning device, including a floor brush housing with a suction port, a cleaning component, and a driving device for driving the cleaning component to move back and forth to approach or move away from the suction port. The left and right sides of the cleaning component have the same travel distance, so that after the cleaning component moves, the axis of the cleaning component can still remain parallel to the extension direction of the scraping component. This technical solution drives the cleaning component to move back and forth by the driving device to change the distance between the cleaning component and the scraping component, thus solving the drawbacks caused by the two always being in a state of resistance. However, the suction port and the suction channel connected to it are usually located in the center of the brush housing, which means there is no space in the center of the brush housing to install the drive unit. Therefore, the drive unit needs to be eccentrically set in the brush housing. Setting a single drive unit and moving one end of the cleaning component to move the other end synchronously can easily cause the cleaning component to jam. This requires very high precision in the processing and assembly of each component. When two drive units are set to drive the left and right sides of the cleaning component respectively, the consistency of the movement of the two drive units is required to be very high. The cleaning component itself also needs to have the ability to rotate, so a separate motor is required to drive the rotation of the cleaning component. This greatly increases the difficulty of equipping two drive units. From a dirt suction perspective, surface cleaning devices inevitably accumulate dirt at the suction port during operation. The consistent forward and backward movement of the cleaning component on both sides results in a uniform airflow around the suction port when the cleaning component is close to it and when it is far away. Consequently, stubborn dirt accumulated at the suction port is not disturbed by changes in airflow at either location. This stubborn dirt shows no signs of loosening, leading to suboptimal cleaning results at the suction port. Users are required to manually clean it periodically, significantly reducing the user experience. Utility Model Content

[0006] This application provides a surface cleaning device to solve the technical problem of poor cleaning effect of existing surface cleaning devices.

[0007] The technical solution adopted in this application is as follows:

[0008] A surface cleaning device includes a floor brush housing, a cleaning component, a handle assembly, and a scraping component. The cleaning component is detachably mounted to the floor brush housing via the handle assembly. The floor brush housing has a first drive device for driving the cleaning component to rotate relative to the scraping component. The cleaning component has a first end connected to the handle assembly and a second end opposite to the first end. The floor brush housing also has a second drive device for driving the cleaning component to move, causing the cleaning component to have a first state and a second state. In the first state, the cleaning component abuts against the scraping component. In the second state, at least one of the first end and the second end of the cleaning component is moved away from the scraping component. The roller brush axis of the cleaning component in the first state is not parallel to the roller brush axis of the cleaning component in the second state.

[0009] This application uses a second driving device to drive the cleaning component to change the distance between the cleaning component and the scraping component, thereby more flexibly adapting to different suction conditions in different scenarios. Taking the operation of the surface cleaning device as an example, when the cleaning component is entangled with hair, fine threads, or other easily tangled objects, the second driving device drives the cleaning component to move. On the one hand, the movement can pull the entangled objects, preventing them from becoming increasingly tight on the cleaning component or even pressing against the rollers on both sides of the cleaning component, thus affecting the rotation of the cleaning component. Since the floor brush housing is also equipped with a liquid supply unit such as a liquid distribution unit, the loosened entangled objects will mix into strips or clumps under the flushing action of the cleaning liquid. The accumulated entangled objects have increased weight, making them easier to be sucked up by the suction port on the floor brush housing, effectively solving the problem of hair entanglement. On the other hand, repeatedly moving the cleaning component and switching between forward and reverse rotation helps to knead the entangled objects attached to the surface of the cleaning component into clumps or strips, which also helps to suck up such dirt and improves cleaning efficiency. Taking the operation of a surface cleaning device as an example, if the cleaning component is covered with highly adhesive dirt such as clay or cat litter, and if the cleaning component remains in contact with the scraper, the clay, cat litter, and other adhering substances will penetrate deeper into the roots of the cleaning component's bristles under the pushing force of the scraper, increasing the difficulty of cleaning the cleaning component. Some of the adhering substances may even be thrown onto the upper surface of the scraper under the centrifugal force of the cleaning component, where they will adhere and harden, becoming cleaning dead zones. During the restart of the surface cleaning device, these particles adhering to the upper surface of the scraper will be removed by the liquid supply unit. The material softens under the scouring action and flows back to the surface of the cleaning component, causing secondary contamination. Therefore, the cleaning component is moved by a drive device to switch its position in a timely manner in such applications. This allows at least one end of the cleaning component to move away from the scraper, thereby opening the upper suction channel between the cleaning component and the scraper. Large particles such as clay and cat litter are prevented from being pushed and compacted to the root of the cleaning component's bristles due to the opening of the upper suction channel. Instead, they are sucked into the suction port under the coordination of suction and the scouring action of the liquid supply unit, improving cleaning efficiency.

[0010] Unlike existing technologies where the cleaning component can move back and forth with consistent travel at both ends, the cleaning component in this application, after movement, has a roller brush axis that is not parallel in the first state to the roller brush axis in the second state. In other words, in the second state, there is a deviation gap between the cleaning component and the scraping component that forms an angle with the extension direction of the scraping component. That is, along the roller brush axis of the cleaning component, the distance between the outer periphery of the cleaning component and the scraping component changes gradually. This gradual change causes the airflow speed to vary along the roller brush axis of the cleaning component when passing through this deviation gap. When the airflow flows through the suction port at different speeds, the airflow speed varies. The speed difference generates eddies near the suction port. These eddies disturb the dirt adhering to the area around the suction port, facilitating the removal of dirt from the brush housing around the suction port. This improves the cleaning efficiency and effectiveness of cleaning the area around the suction port. On the other hand, the difference in the travel distance between the two ends of the cleaning component reduces the requirement for consistency in movement between the two ends, thereby reducing the requirements for processing precision, assembly precision, and control precision. This simplifies the arrangement of the second drive device, its coordination with the cleaning component, and its control, thus reducing the complexity of the surface cleaning device's structural design and control logic.

[0011] Furthermore, the cleaning component deflects when switching from the first state to the second state, allowing the surface cleaning device of this application to better adapt to cleaning needs in different directions and angles, especially when cleaning corners and edges, reducing cleaning blind spots. Moreover, when the rotation and deflection of the cleaning component occur simultaneously, stubborn stains on the surface to be cleaned can be removed more effectively, improving cleaning efficiency and cleaning effect.

[0012] One of the first end and the second end is connected to the second drive device for transmission, so as to move toward or near the scraper under the drive of the second drive device; the other of the first end and the second end is pivotally connected to the floor brush housing for deflection about the first axis of rotation.

[0013] In this technical solution, a second driving device is provided, which drives one of the first and second ends of the cleaning component to move. The other end of the first and second ends is pivotally connected to the floor brush housing via a first rotating shaft. This allows the other end of the cleaning component to deflect around the first rotating shaft when the second driving device pushes one end of the cleaning component to move back and forth, thereby achieving position switching between the first and second states. The second driving device is located on one side, which not only saves costs but also helps reduce the overall weight of the surface cleaning device, making it easier for users to pick up and put down the surface cleaning device. With one end of the cleaning component connected to the second driving device and the other end pivotally connected to the floor brush housing via the first rotating shaft, the cleaning component can easily and smoothly deflect around the first rotating shaft when the second driving device is running, avoiding jamming. The entire operation is natural and smooth, improving the stability and reliability of the cleaning component switching between the first and second states.

[0014] The second drive device is connected to the first end drive. The first drive device includes a first motor, which is built into the cleaning component and pivotally connected to the floor brush housing so as to deflect synchronously around the first rotating shaft with the cleaning component.

[0015] The first drive unit is already connected to the second end of the cleaning component. Therefore, the first drive unit is already arranged in the area corresponding to the second end of the cleaning component within the floor brush housing. This area has many components and little redundant space. Based on this, this technical solution sets the second drive unit to be connected to the first end, which can make full use of the redundant space within the floor brush housing to realize the arrangement of the second drive unit. This not only achieves a compact layout but also balances the weight distribution of the floor brush housing. The connection between the second drive unit and the first end allows for a larger range of motion at the first end of the cleaning component. With the first drive unit connected to the second end, the second end only needs to deflect around the first axis to switch the state of the cleaning component. The range of motion at the second end is relatively small. Therefore, from the perspective of anti-interference, setting the first drive unit to be connected to the second end can improve the stability and reliability of the cleaning component's rotation. Furthermore, embedding the first motor inside the cleaning component simplifies the transmission mechanism between the first motor and the cleaning component, allowing the first drive unit to be less affected by the state switching of the cleaning component. This ensures that the rotation of the cleaning component can exist stably in both the first and second states, so that cleaning and self-cleaning operations are not affected.

[0016] The second drive device is connected to the first end via transmission. The first drive device includes a first motor, which is mounted on the floor brush housing and externally positioned on the cleaning component.

[0017] This technical solution sets the second drive device to be connected to the first end drive, which can make full use of the redundant space inside the brush housing to realize the arrangement of the second drive device, achieving a compact structural layout. The first motor is installed in the brush housing and externally placed on the cleaning component, which can achieve a symmetrical distribution of the first and second drive devices inside the brush housing, making the center of gravity distribution of the brush housing more reasonable. In some scenarios such as turning and cleaning sloped surfaces, the user operation is more effortless, improving the user experience.

[0018] The cleaning component has a transmission seat at the second end, and the floor brush housing has a transmission head that is connected to the transmission seat. The transmission head is connected to the first motor and is a universal connector. At least a portion of the universal connector is located on the outside of the cleaning component.

[0019] This technical solution utilizes the transmission cooperation between the transmission head and the transmission seat, as well as the multi-directional rotatable characteristics of the universal connector, to easily realize the rotation and deflection of the cleaning component. This ensures that the rotation process of the cleaning component does not conflict with the state switching process of the cleaning component. During the cleaning operation and self-cleaning operation, the cleaning component can still maintain its rotation around its own roller brush axis during and after the state switching process, thus avoiding affecting the cleaning efficiency and cleaning effect.

[0020] The second drive device is drivenly connected to the second end. The first drive device includes a first motor, which is built into the interior of the cleaning component. The handle assembly includes a side plate and an end cap. The end cap is drivenly connected to the cleaning component, and the end cap and the side plate are pivotally connected via a first rotating shaft, so that the first end deflects around the first rotating shaft under the drive of the second end.

[0021] In this technical solution, both the first and second driving devices are connected to the second end of the cleaning component. In other words, the first and second driving devices are located on the same side of the brush housing. To fully utilize the space within the brush housing and the cleaning component to accommodate the first and second driving devices, this technical solution integrates the first motor into the cleaning component, thus saving more space within the brush housing for the second driving device. To facilitate the switching of the cleaning component's states, this technical solution sets the end cap in the handle assembly to be pivotally connected to the side plate via a first rotating shaft. The cleaning component is driven by the end cap, allowing the first end of the cleaning component to deflect around the first rotating shaft under the drive of the second end, achieving smooth switching between the first and second states.

[0022] The second driving device is connected to the first end via transmission. The handle assembly includes a side plate and an end cap. One end of the end cap is connected to the cleaning component via transmission, and the other end is pivotally connected to the side plate via a second rotating shaft. The cleaning component rotates around a rotation axis under the drive of the first driving device. The second rotating shaft is perpendicular to the rotation axis. Under the drive of the second driving device, the cleaning component deflects around the second rotating shaft.

[0023] In this technical solution, the end cap and side plate in the handle assembly are pivotally connected by a second rotating shaft. The second rotating shaft is perpendicular to the axis of rotation, so that when the second drive device drives the first end of the cleaning component to move, the end cap can rotate slightly with the help of the second rotating shaft. This eliminates the need for a large gap between the end cap and the inner wall of the cleaning component to achieve synchronous rotation of the end cap and the cleaning component. It also prevents the end cap and the cleaning component from getting stuck due to unilateral compression when the second drive device pushes the first end to move, thus reducing the requirement for the gap size between the end cap and the inner wall of the cleaning component. This not only helps in the miniaturization design of the cleaning component but also reduces the probability of external dirt entering the interior of the cleaning component through the gap between the two.

[0024] The second rotating shaft and the rotation axis are perpendicular to each other.

[0025] In this technical solution, the second rotating shaft and the rotation axis are perpendicular to each other, which not only facilitates the installation of the second rotating shaft, but also allows the end cover to rotate around the second rotating shaft at a larger angle. This allows the cleaning component to have a larger deviation gap with the scraping component in the second state, so as to adapt to cleaning problems in different scenarios.

[0026] The second driving device includes a first driving mechanism for driving the first end to move away from or towards the scraper, and a second driving mechanism for driving the second end to move away from or towards the scraper; the feed stroke of the first driving mechanism driving the first end to move is different from the feed stroke of the second driving mechanism driving the second end to move.

[0027] In this technical solution, there are two second driving devices: a first driving mechanism and a second driving mechanism. The feed stroke of the first driving mechanism driving the first end to move is different from the feed stroke of the second driving mechanism driving the second end to move, so that the roller brush axis of the cleaning component in the first state is not parallel to the roller brush axis of the cleaning component in the second state. Compared with the above-mentioned technical solutions that use unilateral driving so that one end of the cleaning component can be moved away from the scraper and the other end can deflect around the axis, in this technical solution, both the first and second ends of the cleaning component can be moved away from the scraper, and both ends can be separated from the scraper by a certain distance, thereby reducing the probability of dirt accumulating at the end of the cleaning component that is closer to the scraper. Especially in actual use, the distribution of dirt in the circumferential and axial directions of the cleaning component is uncertain. With both the first and second ends separated from the scraper by a certain distance, dirt at different positions in the axial direction of the cleaning component can be pulled or sucked, thereby improving the cleaning effect of the cleaning component.

[0028] The first drive mechanism and the second drive mechanism operate alternately to drive the first end and the second end to move alternately closer to or further away from the scraper.

[0029] In this technical solution, the first and second driving mechanisms operate alternately to move the first and second ends alternately closer to or further away from the scraper, thereby concentrating dirt more towards the suction port and improving cleaning efficiency and effectiveness. The alternating movement of the first and second ends increases the pressure variation on the surface to be cleaned, aiding in the removal of stubborn stains. Furthermore, the alternating movement of the two ends of the cleaning component closer to or further away from the scraper ensures a more uniform pressure distribution on the surface of the cleaning component, preventing excessive wear in one direction and extending its service life. Attached Figure Description

[0030] 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:

[0031] Figure 1 This is an exploded view of the brush housing according to one embodiment of Example 1 of this application;

[0032] Figure 2 This is a partial structural diagram of the floor brush housing according to one embodiment of this application;

[0033] Figure 3 for Figure 2 Enlarged view of part A;

[0034] Figure 4This is a cross-sectional view and a partial enlarged view of the floor brush housing when the cleaning component is in the second state according to one embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the cooperation state between the second drive device and the handle assembly when the cleaning component is in the first state according to one embodiment of this application;

[0036] Figure 6 This is a cross-sectional view and a partial enlarged view of the structure of the floor brush housing when the cleaning component is in the second state according to one embodiment of this application;

[0037] Figure 7 This is a partial structural diagram of the floor brush housing according to one embodiment of this application;

[0038] Figure 8 for Figure 7 Enlarged view of part B.

[0039] in,

[0040] 1. Floor brush housing; 11. Cover plate; 12. Motor bracket; 13. First rotating shaft; 14. Transmission head;

[0041] 2. Liquid separator;

[0042] 3. Scraping parts;

[0043] 4. Cleaning component; 41. First end; 42. Second end; 43. Transmission seat;

[0044] 5. Handle assembly; 51. Side plate; 52. End cap; 53. Second pivot; 54. Slider;

[0045] 6. First motor;

[0046] 7. Second drive unit; 71. Second motor; 72. Worm gear; 73. Transmission block. Detailed Implementation

[0047] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0048] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0049] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0052] Example 1:

[0053] like Figure 1 , Figure 4 and Figure 5As shown, a surface cleaning device includes a floor brush housing 1, a cleaning component 4, a handle assembly 5, and a scraper 3. The cleaning component 4 is detachably mounted to the floor brush housing 1 via the handle assembly 5. The floor brush housing 1 is provided with a first drive device for driving the cleaning component 4 to rotate relative to the scraper 3. The cleaning component 4 has a first end 41 connected to the handle assembly 5 and a second end 42 opposite to the first end 41. The floor brush housing 1 is also provided with a second drive device 7 for driving the cleaning component 4 to move, so that the cleaning component 4 has a first state and a second state. In the first state, the cleaning component 4 abuts against the scraper 3. In the second state, at least one of the first end 41 and the second end 42 of the cleaning component 4 is away from the scraper 3. The roller brush axis of the cleaning component 4 in the first state is not parallel to the roller brush axis of the cleaning component 4 in the second state.

[0054] In this embodiment 1, the method of detachable connection between the handle assembly 5 and the floor brush housing 1 is not limited. The two can be connected and fixed by means of detachable connection such as snap-fit ​​connection or magnetic attraction.

[0055] In this embodiment 1, the cleaning component 4 is driven by the second driving device 7 to change the distance between the cleaning component 4 and the scraping component 3, thereby making it more flexible to adapt to the suction conditions in different scenarios. Taking the cleaning component 4 as an example, when it is wrapped with hair, fine threads, or other easily tangled objects during the operation of the surface cleaning device, the second drive device 7 drives the cleaning component 4 to move. On the one hand, the tangled objects are pulled during the movement, preventing them from becoming more and more tightly wrapped on the cleaning component 4 or even being squeezed onto the rollers on both sides of the cleaning component 4, which would affect the rotation of the cleaning component 4. Since the floor brush housing 1 is also equipped with a liquid supply unit such as a liquid distribution unit 2, the loosened easily tangled objects will mix into hair strips or clumps under the flushing action of the cleaning liquid. The weight of the accumulated easily tangled objects increases, making it easier for them to be sucked up by the suction port on the floor brush housing 1, which effectively solves the problem of hair easily tangling. On the other hand, if the cleaning component 4 is moved repeatedly and the forward and reverse rotation of the cleaning component 4 is switched, it helps to knead the tangled objects attached to the surface of the cleaning component 4 into clumps or strips, which also helps to suck up such dirt and improve the cleaning efficiency. Taking the operation of the surface cleaning device as an example, if the cleaning component 4 is covered with strong adhesive dirt such as clay and cat litter, and if the cleaning component 4 remains in the first state of contact with the scraper component 3, the clay, cat litter, and other adhesives will penetrate deeper into the roots of the bristles of the cleaning component 4 under the pushing force of the scraper component 3, increasing the cleaning difficulty of the cleaning component 4. Some of the adhesives may even be thrown onto the upper surface of the scraper component 3 by the centrifugal force of the cleaning component 4 and harden, becoming a cleaning dead zone. During the restart of the surface cleaning device, these particles attached to the upper surface of the scraper component 3 will be removed by the liquid supply unit. The material softens under the scouring and flows back to the surface of the cleaning component 4, causing secondary contamination. Therefore, the cleaning component 4 is moved by the drive device to switch its position in a timely manner in this type of application scenario. This allows at least one end of the cleaning component 4 to move away from the scraper 3, thereby opening the upper suction channel between the cleaning component 4 and the scraper 3. Large particles such as clay and cat litter are prevented from being pushed and compacted to the root of the bristles of the cleaning component 4 due to the opening of the upper suction channel. Instead, they are sucked into the suction port under the coordination of suction and the scouring of the liquid supply unit, improving the cleaning efficiency.

[0056] Unlike existing technologies where the cleaning component can move back and forth with consistent travel at both ends, in this embodiment 1, the cleaning component 4, after moving, has a roller brush axis that is not parallel to the roller brush axis in the first state and the roller brush axis in the second state. In other words, in the second state, there is a deviation gap between the cleaning component 4 and the scraper 3, which is at an angle to the extension direction of the scraper 3. That is, along the roller brush axis of the cleaning component 4, the distance between the outer periphery of the cleaning component 4 and the scraper 3 gradually changes. This gradual change causes the airflow speed to vary along the roller brush axis of the cleaning component 4 when passing through the deviation gap, resulting in airflow at different speeds towards the suction port. At the same time, due to the speed difference, eddies will be generated near the suction port. The presence of eddies will disturb the dirt attached to the area around the suction port, making it easier for the dirt to be peeled off from the floor brush housing 1 around the suction port, thus improving the cleaning efficiency and effect of cleaning dirt near the suction port. On the other hand, the difference in the movement stroke at both ends of the cleaning component 4 reduces the requirement for the consistency of movement at both ends of the cleaning component 4, thereby reducing the requirements for processing accuracy, assembly accuracy, control accuracy, etc., which simplifies the arrangement of the second drive device 7, its cooperation with the cleaning component 4, and control, thereby reducing the complexity of the surface cleaning device model structure design and control logic.

[0057] Furthermore, the cleaning component 4 deflects when switching from the first state to the second state, allowing the surface cleaning device in Embodiment 1 to better adapt to cleaning needs in different directions and angles. It is particularly flexible when cleaning corners and edges, reducing cleaning blind spots. Moreover, when the rotation and deflection of the cleaning component 4 occur simultaneously, it can more effectively remove stubborn stains from the surface to be cleaned, improving cleaning efficiency and effectiveness.

[0058] In this embodiment 1, the second driving device 7 employs a unilateral driving method for the cleaning component 4. Specifically, in this embodiment 1, one of the first end 41 and the second end 42 is connected to the second driving device 7 for transmission, allowing it to move towards or near the scraping component 3 under the drive of the second driving device 7; the other of the first end 41 and the second end 42 is pivotally connected to the floor brush housing 1, allowing it to deflect around the first rotating shaft 13. The second driving device 7 is configured to drive one of the first ends 41 and the second end 42 of the cleaning component 4 to move, while the other of the first end 41 and the second end 42 is pivotally connected to the floor brush housing 1 via the first rotating shaft 13. This allows the other end of the cleaning component 4 to deflect around the first rotating shaft 13 when the second driving device 7 pushes one end of the cleaning component 4 to translate back and forth, thereby achieving a position switch between the first state and the second state. The unilateral configuration of the second driving device 7 not only saves costs but also helps reduce the overall weight of the surface cleaning device, making it easier for users to pick up and put away the surface cleaning device. One end of the cleaning component 4 is connected to the second drive device 7 via transmission, and the other end is pivotally connected to the floor brush housing 1 via the first rotating shaft 13. This allows the cleaning component 4 to easily and smoothly deflect around the first rotating shaft 13 when the second drive device 7 is running, avoiding jamming. The entire operation process is natural and smooth, improving the stability and reliability of the cleaning component 4 in switching between the first and second states.

[0059] The first drive unit is already connected to the second end 42 of the cleaning component 4. Therefore, the first drive unit is already arranged in the area corresponding to the position of the second end 42 of the cleaning component 4 within the floor brush housing 1. This area contains many components and has little redundant space. In view of this, as a preferred embodiment of this example 1, as follows... Figures 1 to 5 As shown, the second drive device 7 is connected to the first end 41 via transmission. The first drive device includes a first motor 6, which is built into the cleaning component 4 and pivotally connected to the floor brush housing 1 so as to deflect synchronously around the first rotating shaft 13 with the cleaning component 4.

[0060] In this embodiment, the second drive device 7 is configured to be driven and connected to the first end 41. This fully utilizes the redundant space within the brush housing 1 to accommodate the second drive device 7, achieving not only a compact structural layout but also a balanced weight distribution within the brush housing 1. The connection between the second drive device 7 and the first end 41 allows for a larger range of motion in the first end 41 of the cleaning component 4. The first drive device is also driven and connected to the second end 42, allowing the second end 42 to switch states simply by deflecting around the first pivot 13. The range of motion in the second end 42 is relatively small. Therefore, from an anti-interference perspective, connecting the first drive device to the second end 42 improves the stability and reliability of the cleaning component 4's rotation. Furthermore, embedding the first motor 6 within the cleaning component 4 simplifies the transmission mechanism between the first motor 6 and the cleaning component 4, minimizing the impact of state switching on the first drive device. This ensures stable rotation of the cleaning component 4 in both the first and second states, preventing disruption to cleaning and self-cleaning operations.

[0061] In a specific example, such as Figure 1 As shown, the floor brush housing 1 has a cover plate 11 on the other side corresponding to the handle assembly 5. The cover plate 11 has a motor bracket 12 for mounting the first motor 6 on the side near the second end 42. The first motor 6 is pivotally connected to the motor bracket 12 at the other end opposite to its output shaft via a first rotating shaft 13, so that when the second drive device 7 drives the first end 41 of the cleaning component 4 to move back and forth, the first motor 6 can deflect around the first rotating shaft 13 together with the cleaning component 4, so as to realize the switching of the cleaning component 4 between the first state and the second state.

[0062] This embodiment does not limit the specific composition of the second driving device or the composition of its transmission mechanism with the first end of the cleaning component. It can adopt any of the following examples:

[0063] Example 1: such as Figure 4 and Figure 5 As shown, the second drive device 7 includes a second motor 71 and a worm gear 72 that is driven through the output shaft of the second motor 71. The handle assembly 5 includes a side plate 51 that is detachably connected to the floor brush housing 1 and an end cap 52 located at one end of the side plate 51. The end cap 52 extends into the cleaning component 4 to rotate synchronously with the roller brush axis of the cleaning component 4. The transmission mechanism includes a slider 54 located on the side of the side plate 51 away from the end cap 52 and a transmission block 73 connected to the slider 54. The transmission block 73 has a through hole through which the worm gear 72 passes, and the inner wall of the through hole has meshing teeth along its circumference that mesh with the outer tooth line of the worm gear 72.

[0064] Example 2: Not illustrated in Example 2, the second drive device includes a second motor and a lead screw connected to the output shaft of the second motor. The handle assembly includes a side plate detachably connected to the brush housing and an end cap located at one end of the side plate. The end cap extends into the cleaning component to rotate synchronously with the roller brush axis of the cleaning component. The transmission mechanism includes a slider located on the side of the side plate away from the end cap and a transmission block connected to the slider. The transmission block is a nut pair that helically engages with the lead screw. The second motor drives the slider to move back and forth through the ball screw pair, thereby moving the first end of the cleaning component back and forth.

[0065] Example 3: Not illustrated in Example 3, in this example, the second driving device includes a hydraulic cylinder or a pneumatic cylinder. The handle assembly includes a side plate detachably connected to the brush housing and an end cap located at one end of the side plate. The end cap extends into the cleaning component to rotate synchronously with the roller brush axis of the cleaning component. The transmission mechanism includes a slider located on the side of the side plate away from the end cap and a transmission block connected to the slider. The transmission block is operatively connected to the hydraulic cylinder or pneumatic cylinder to slide back and forth under the drive of the hydraulic cylinder or pneumatic cylinder, thereby driving the first end of the cleaning component to move back and forth through the slider and the side plate.

[0066] As a preferred embodiment of this application, such as Figure 4 As shown, the second drive device 7 is connected to the first end 41 in a transmission manner. The handle assembly 5 includes a side plate 51 and an end cap 52. One end of the end cap 52 is connected to the cleaning component 4 in a transmission manner, and the other end is pivotally connected to the side plate 51 through a second rotating shaft 53. The cleaning component 4 rotates around the rotation axis under the drive of the first drive device. The second rotating shaft 53 is perpendicular to the rotation axis. Under the drive of the second drive device 7, the cleaning component 4 deflects around the second rotating shaft 53. In this embodiment, the end cap 52 and the side plate 51 in the handle assembly 5 are pivotally connected by a second rotating shaft 53. The second rotating shaft 53 is perpendicular to the axis of rotation, so that when the second driving device 7 drives the first end 41 of the cleaning component 4 to move, the end cap 52 can rotate slightly with the help of the second rotating shaft 53. Thus, it is not necessary to rely on a large gap between the end cap 52 and the inner wall of the cleaning component 4 to achieve synchronous rotation of the end cap 52 and the cleaning component 4. Furthermore, when the second driving device 7 pushes the first end 41 to move, the end cap 52 and the cleaning component 4 will be stuck due to unilateral compression, which will affect the rotation of the cleaning component 4. This reduces the requirement for the gap size between the end cap 52 and the inner wall of the cleaning component 4, which not only helps the miniaturization design of the cleaning component 4, but also reduces the probability of external dirt entering the interior of the cleaning component 4 through the gap between the two.

[0067] In this embodiment, the relative positional relationship between the second rotating shaft and the rotation axis can be any one of the following examples:

[0068] Example 4: The second axis of rotation and the axis of rotation are coplanar and perpendicular.

[0069] Example 5: such as Figure 4 As shown, the second rotating shaft 53 is perpendicular to the axis of rotation. This arrangement facilitates the installation of the second rotating shaft 53 and allows the end cap 52 to rotate around the second rotating shaft 53 at a larger angle. This results in a larger clearance between the cleaning component 4 and the scraping component 3 in the second state, adapting to cleaning problems in different scenarios.

[0070] Example 2:

[0071] This embodiment 2 is basically the same as embodiment 1 in structure and principle, the difference being:

[0072] like Figure 6 As shown, in this embodiment 2, the second driving device 7 is connected to the first end 41 in a transmission manner. The first driving device includes a first motor 6, which is installed on the floor brush housing 1 and externally placed on the cleaning component 4.

[0073] In this embodiment 2, the second drive device 7 is configured to be connected to the first end 41 via transmission. This allows full utilization of the redundant space within the brush housing 1 to accommodate the arrangement of the second drive device 7, resulting in a compact structural layout. The first motor 6 is mounted on the brush housing 1 and externally mounted on the cleaning component 4, enabling a symmetrical distribution of the first and second drive devices 7 within the brush housing 1. This makes the center of gravity distribution of the brush housing 1 more reasonable, reducing the effort required for user operation and improving the user experience in scenarios such as turning and cleaning sloped surfaces.

[0074] As a preferred embodiment of this Example 2, such as Figure 6 As shown, the cleaning component 4 has a transmission seat 43 at its second end 42, and the floor brush housing 1 has a transmission head 14 that is connected to the transmission seat 43. The transmission head 14 is connected to the first motor 6 and is a universal joint. At least a portion of the universal joint is located on the outside of the cleaning component 4. This embodiment, by means of the transmission cooperation between the transmission head 14 and the transmission seat 43, and the multi-directional rotatable characteristic of the universal joint itself, can easily realize the rotation and deflection of the cleaning component 4. This ensures that the rotation process of the cleaning component 4 does not conflict with the state switching process of the cleaning component 4. During the cleaning operation and self-cleaning operation, the cleaning component 4 can still maintain its rotation around its own roller brush axis during and after the state switching process, thus avoiding affecting the cleaning efficiency and cleaning effect.

[0075] Example 3:

[0076] This embodiment 3 is basically the same as embodiment 1 in structure and principle, except that:

[0077] like Figure 7 and Figure 8As shown, in this embodiment 3, the second driving device 7 is connected to the second end 42 in a transmission connection. The first driving device includes a first motor, which is built into the cleaning component 4. The handle assembly 5 includes a side plate 51 and an end cap. The end cap is connected to the cleaning component 4 in a transmission connection, and the end cap and the side plate 51 are pivotally connected through a first rotating shaft, so that the first end deflects around the first rotating shaft under the drive of the second end 42.

[0078] In this embodiment 3, both the first driving device and the second driving device 7 are connected to the second end 42 of the cleaning component 4. In other words, the first driving device and the second driving device 7 are located on the same side of the brush housing 1. In order to make full use of the space inside the brush housing 1 and the cleaning component 4 to realize the arrangement of the first driving device and the second driving device 7, this technical solution integrates the first motor into the cleaning component 4, thereby saving more space inside the brush housing 1 for the arrangement of the second driving device 7. In order to facilitate the switching of the state of the cleaning component 4, this technical solution sets the end cap in the handle assembly 5 to be pivotally connected to the side plate 51 through the first rotating shaft, and the cleaning component 4 is driven by the end cap, so that the first end 41 of the cleaning component 4 can deflect around the first rotating shaft under the drive of the second end 42, realizing the smooth switching of the cleaning component 4 between the first state and the second state.

[0079] Example 4:

[0080] This embodiment 4 is not illustrated. Unlike the single-sided drive in embodiment 1, in this embodiment 4, the second drive device includes a first drive mechanism for driving the first end to move away from or towards the scraper, and a second drive mechanism for driving the second end to move away from or towards the scraper. The feed stroke of the first drive mechanism driving the first end to move is different from the feed stroke of the second drive mechanism driving the second end to move.

[0081] In this embodiment 4, there are two second driving devices: a first driving mechanism and a second driving mechanism. The feed stroke of the first driving mechanism driving the first end to move is different from the feed stroke of the second driving mechanism driving the second end to move, so that the roller brush axis of the cleaning component in the first state is not parallel to the roller brush axis of the cleaning component in the second state. Compared with the above-mentioned technical solution of single-sided driving so that one end of the cleaning component can be away from the scraper and the other end can deflect around the axis, in this technical solution, both the first and second ends of the cleaning component can be away from the scraper, and both the first and second ends can be separated from the scraper by a certain distance, thereby reducing the probability of dirt accumulating at the end of the cleaning component that is closer to the scraper. Especially in actual use, the distribution of dirt in the circumferential and axial directions of the cleaning component is uncertain. With both the first and second ends separated from the scraper by a certain distance, dirt at different positions in the axial direction of the cleaning component can be pulled or sucked, thereby improving the cleaning effect of the cleaning component.

[0082] In this embodiment 4, the driving stroke of the first driving mechanism and the second driving mechanism is not limited, and any of the following embodiments can be adopted:

[0083] Implementation method 1: The feed stroke of the first drive mechanism driving the first end to move is always greater than the feed stroke of the second drive mechanism driving the second end to move, so that in the second state, the deviation gap between the first end and the scraper is greater than the deviation gap between the second end and the scraper.

[0084] Implementation method 2: The feed stroke of the first drive mechanism driving the first end to move is always less than the feed stroke of the second drive mechanism driving the second end to move, so that in the second state, the deviation gap between the first end and the scraper is less than the deviation gap between the second end and the scraper.

[0085] In this embodiment 4, the timing of the operation of the first and second drive mechanisms is not limited, and any of the following embodiments can be adopted:

[0086] Implementation method 3: The first drive mechanism and the second drive mechanism operate simultaneously to drive the first end and the second end to move closer to or further away from the scraper at the same time.

[0087] Implementation Method 4: The first and second drive mechanisms operate alternately, causing the first and second ends to alternately move closer to or away from the scraper. This arrangement concentrates dirt towards the suction port, improving cleaning efficiency and effectiveness. The alternating movement of the first and second ends increases the pressure variation on the surface to be cleaned, aiding in the removal of stubborn stains. Furthermore, the alternating movement of the two ends of the cleaning component closer to or away from the scraper ensures a more even pressure distribution on the surface of the cleaning component, preventing excessive wear in one direction and extending its service life.

[0088] Regardless of whether it is Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, the feed stroke of the second driving device 7 driving the cleaning component 4 can be further diversified, that is, the second driving device 7 driving the cleaning component 4 has multiple feed strokes. Different feed strokes can be selected according to different application environments and decontamination requirements, so that there are multiple options for the deviation gap between the cleaning roller and the scraping component 3, thereby improving the flexibility of the cleaning operation and enhancing the adaptability of the surface cleaning device in this application to the cleaning environment and self-cleaning performance.

[0089] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0090] 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.

[0091] The above descriptions are merely embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. 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 brush housing, a cleaning component, a handle assembly, and a scraping component, wherein the cleaning component is detachably mounted to the brush housing via the handle assembly, the brush housing is provided with a first driving device for driving the cleaning component to rotate relative to the scraping component, the cleaning component having a first end connected to the handle assembly and a second end opposite to the first end, characterized in that, The floor brush housing is also provided with a second driving device, which is used to drive the cleaning component to move so that the cleaning component has a first state and a second state; in the first state, the cleaning component abuts against the scraping component; In the second state, at least one of the first end and the second end of the cleaning member is away from the scraping member; the roller brush axis of the cleaning member in the first state is not parallel to the roller brush axis of the cleaning member in the second state.

2. The surface cleaning device according to claim 1, characterized in that, One of the first end and the second end is connected to the second drive device for transmission, so as to move toward or near the scraper under the drive of the second drive device; the other of the first end and the second end is pivotally connected to the floor brush housing for deflection about the first axis of rotation.

3. The surface cleaning device according to claim 2, characterized in that, The second drive device is connected to the first end drive. The first drive device includes a first motor, which is built into the cleaning component and pivotally connected to the floor brush housing so as to deflect synchronously around the first rotating shaft with the cleaning component.

4. A surface cleaning device according to claim 2, characterized in that, The second drive device is connected to the first end via transmission. The first drive device includes a first motor, which is mounted on the floor brush housing and externally positioned on the cleaning component.

5. A surface cleaning device according to claim 4, characterized in that, The cleaning component has a transmission seat at the second end, and the floor brush housing has a transmission head that is connected to the transmission seat. The transmission head is connected to the first motor and is a universal connector. At least a portion of the universal connector is located on the outside of the cleaning component.

6. A surface cleaning device according to claim 2, characterized in that, The second drive device is drivenly connected to the second end. The first drive device includes a first motor, which is built into the interior of the cleaning component. The handle assembly includes a side plate and an end cap. The end cap is drivenly connected to the cleaning component, and the end cap and the side plate are pivotally connected via a first rotating shaft, so that the first end deflects around the first rotating shaft under the drive of the second end.

7. A surface cleaning device according to claim 1, characterized in that, The second driving device is connected to the first end via transmission. The handle assembly includes a side plate and an end cap. One end of the end cap is connected to the cleaning component via transmission, and the other end is pivotally connected to the side plate via a second rotating shaft. The cleaning component rotates around a rotation axis under the drive of the first driving device. The second rotating shaft is perpendicular to the rotation axis. Under the drive of the second driving device, the cleaning component deflects around the second rotating shaft.

8. A surface cleaning device according to claim 7, characterized in that, The second rotating shaft and the rotation axis are perpendicular to each other.

9. A surface cleaning device according to claim 1, characterized in that, The second drive device includes a first drive mechanism for driving the first end to move away from or towards the scraper, and a second drive mechanism for driving the second end to move away from or towards the scraper. The feed stroke of the first drive mechanism driving the first end to move is different from the feed stroke of the second drive mechanism driving the second end to move.

10. A surface cleaning device according to claim 9, characterized in that, The first drive mechanism and the second drive mechanism operate alternately to drive the first end and the second end to move alternately closer to or further away from the scraper.

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