Cleaning device

Abstract

The invention relates to cleaning equipment which comprises a floor brush assembly, and the floor brush assembly comprises a floor brush shell, a first cleaning unit and a second cleaning unit. The first cleaning unit is provided with a first cleaning piece; the first cleaning unit is rotationally connected to the floor brush shell along a first rotating axis, so that the first cleaning piece cleans the working surface; the second cleaning unit comprises a body and a second cleaning piece, and the second cleaning piece is arranged on the bottom end face of the body; in the direction parallel to the first rotating axis, the second cleaning unit is located on at least one side of the first cleaning unit; in the non-cleaning state, the first cleaning unit and the second cleaning unit do not rotate, and interference exists between the second cleaning unit and the working face. In the cleaning state, the second cleaning piece deforms in the direction away from the center of the body under external force in the process of rotating along with the body, so that the inner side face, facing the center of the body, of the second cleaning piece is attached to the working face. The cleaning state is a working state in which the first cleaning unit rotates to clean the working surface.

Description

[0001] This application is a divisional application of the invention application entitled "Cleaning Equipment", with parent application number "202411340753.7" and parent application date of September 25, 2024. Technical Field

[0002] This disclosure relates to the field of cleaning technology, and specifically to a cleaning device. Background Technology

[0003] With the development of social productivity, people's living standards have also improved. With their material needs met, people have begun to use various tools to reduce labor and improve their quality of life, leading to the emergence of household cleaning equipment.

[0004] Cleaning equipment typically consists of a main body and a cleaning unit. Due to design requirements, the cleaning unit cannot extend to the outside of the main body. This means that when the cleaning equipment is working along edges, the sides of the cleaning unit cannot achieve zero-edge contact, resulting in cleaning dead zones. Consequently, stains remain on the floor near walls and furniture, leading to a poor user experience.

[0005] In existing technologies, to address the issue of edge adhesion, side brushes are typically installed on the side of the roller brush. These side brushes are usually driven or driven by separate mechanisms. However, these mechanisms require significant space, necessitating a reduction in the length of the roller brush to accommodate the side brushes and their drive or transmission mechanisms. In cleaning equipment, the roller brush, wetted with cleaning fluid and rotating to clean the floor, is the primary cleaning unit, providing a large cleaning area. Compared to the side brushes, the roller brush is the most crucial factor in the cleaning efficiency of the equipment. The reduction in roller brush length required to install and drive the side brushes inevitably and significantly decreases the cleaning efficiency. Therefore, providing a cleaning device that solves the edge adhesion problem without compromising cleaning efficiency is the technical problem this disclosure urgently seeks to address. Summary of the Invention

[0006] This disclosure provides a cleaning device to address the problems existing in the prior art.

[0007] According to a first aspect of this disclosure, a cleaning device is provided, including a floor brush assembly, the floor brush assembly comprising:

[0008] Floor brush housing;

[0009] A first cleaning unit has a first cleaning component; the first cleaning unit is configured to be rotatably connected to the floor brush housing along a first rotation axis so that the first cleaning component cleans the working surface;

[0010] The second cleaning unit includes a body and a second cleaning component, the second cleaning component being disposed on the bottom end surface of the body; the second cleaning unit is located on at least one side of the first cleaning unit in a direction parallel to the first rotation axis.

[0011] In a non-cleaning state, the first cleaning unit and the second cleaning unit do not rotate, and the second cleaning component has an interference fit with the working surface;

[0012] In the cleaning state, the second cleaning component is deformed away from the center of the body by an external force as it rotates with the body, so that the inner side of the second cleaning component facing the center of the body fits against the working surface; the cleaning state is the working state in which the first cleaning unit rotates to clean the working surface.

[0013] According to a second aspect of this disclosure, a cleaning device is provided, including a floor brush assembly, the floor brush assembly comprising:

[0014] Floor brush housing;

[0015] The first cleaning unit has a first cleaning component; the first cleaning unit is configured to be rotatably connected to the floor brush housing (1) along a first rotation axis so that the first cleaning component cleans the working surface;

[0016] The second cleaning unit includes a body and a second cleaning component, the second cleaning component being disposed on the bottom end surface of the body; the second cleaning unit is located on at least one side of the first cleaning unit in a direction parallel to the first rotation axis.

[0017] In a non-cleaning state, the first cleaning unit and the second cleaning unit do not rotate, and the second cleaning component extends from the body toward the working surface at an angle between 90° and 110°.

[0018] In the cleaning state, the second cleaning component is deformed away from the center of the body by an external force as it rotates with the body, so that the inner side of the second cleaning component facing the center of the body fits against the working surface; the cleaning state is the working state in which the first cleaning unit rotates to clean the working surface.

[0019] One beneficial effect of this disclosure is that by providing a second cleaning unit on at least one side of the first cleaning unit, and extending the cleaning surface of the second cleaning unit to the outside of the brush housing, the cleaning coverage area is increased. During edge cleaning, although the side of the first cleaning unit cannot achieve zero-edge contact, the second cleaning component can reach into cleaning dead corners, filling the gaps between the first cleaning unit and the wall or furniture edge, thus achieving comprehensive cleaning. In the cleaning state, the second cleaning component can deform away from the center of the body under external force during rotation, thereby causing the inner side of the second cleaning component facing the center of the body to contact the working surface, increasing the contact area between the second cleaning component and the working surface, and improving the cleaning effect of the second cleaning component on the working surface.

[0020] Furthermore, the first cleaning unit can drive the second cleaning unit to rotate, thus eliminating the need for an additional drive or transmission mechanism for the second cleaning unit and saving space in the cleaning equipment. The first cleaning unit is the primary cleaning unit of the cleaning equipment; even with the addition of the second cleaning unit, the first cleaning unit can still maintain its original length, thereby not affecting the cleaning efficiency of the cleaning equipment. Therefore, this disclosure provides a cleaning device that does not affect the cleaning efficiency of the cleaning equipment while simultaneously achieving edge cleaning.

[0021] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0023] Figure 1 This is a schematic diagram of the structure of the cleaning equipment disclosed herein;

[0024] Figure 2 This is a schematic diagram of the structure of the brush component disclosed herein;

[0025] Figure 3 This is a structural diagram of the brush component from another angle.

[0026] Figure 4 This is a cross-sectional view of the publicly disclosed brush component;

[0027] Figure 5 This is a partial bottom view of the side brush position of the brush component disclosed in this publication;

[0028] Figure 6 This is a structural schematic diagram of the first arm, drive device and side brush disclosed in this paper;

[0029] Figure 7This is a schematic diagram of the structure of the disclosed edge brush;

[0030] Figure 8 This is an axial sectional view of the edge brush disclosed herein;

[0031] Figure 9 This is a cross-sectional view of the clamp position of the side brush disclosed herein;

[0032] Figure 10 This is a schematic diagram of the structure of the ground brush assembly according to Embodiment 2 of this disclosure;

[0033] Figure 11 This is a schematic diagram of the side brush structure according to Embodiment 2 of this disclosure;

[0034] Figure 12 This is a partial bottom view of the side brush position of the ground brush component in Embodiment 2 of this disclosure;

[0035] Figure 13 This is a cross-sectional view of the brush assembly according to Embodiment 2 of this disclosure;

[0036] Figure 14 This is a schematic diagram of the structure of the first support arm, driving device, and side brush in Embodiment 2 of this disclosure;

[0037] Figure 15 This is a schematic diagram of the side brush and clamp structure in Embodiment 2 of this disclosure;

[0038] Figure 16 This is a cross-sectional view of the side brush in Embodiment 2 of this disclosure;

[0039] Figure 17 This is a schematic diagram of the shape of the brush plate according to Embodiment 2 of this disclosure;

[0040] Figure 18 This is a magnified view of a partial structure of the side brush position of the ground brush component in Embodiment 2 of this disclosure;

[0041] Figure 19 This is a partially enlarged view of the side brush position of the ground brush component in Embodiment 2 of this disclosure from another angle;

[0042] Figure 20 This is a partial bottom view of the side brush position of the ground brush component in Embodiment 2 of this disclosure.

[0043] Figures 1 to 20 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0044] 100. Body; 101. Handheld unit; 200. Floor brush assembly; 201. Walking mechanism;

[0045] 1. Floor brush housing; 11. Drive side; 12. Disassembly side; 2. Roller brush; 21. Roller brush bristles; 22. Side wall; 3. Side brush; 30. Rotating shaft; 301. Snap-fit ​​groove; 31. Brush bristles; 32. Mounting base; 321. Inner cavity; 322. Groove; 323. First part; 324. Second part; 33. Flange; 34. Clamp; 341. Snap-fit ​​piece; 36. Brush blade; 361. First end; 362. Second end; S1. Lower end face; S2. Inner side face; 37. Friction part; 4. Drive device; 41. Motor; 42. Drive shaft; 43. Transmission part; 5. First support arm; 6. Second support arm; 7. Rubber strip. Detailed Implementation

[0046] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0047] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0048] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0050] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0051] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0052] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0053] Example 1

[0054] This embodiment provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, handheld vacuum cleaner, handheld floor scrubber, handheld fabric cleaner, or other handheld cleaning devices well known to those skilled in the art. It can also be a robotic vacuum cleaner, robotic mop, or a combined sweeping and mopping robot, used to clean work surfaces such as floors, sofas, and carpets.

[0055] refer to Figure 1 In this embodiment, the cleaning device is a handheld floor scrubber, which includes a body 100, a handheld part 101, and a floor brush assembly 200 connected to the bottom of the body. Specifically, when using this handheld cleaning device, the user can push the handheld part 101 to move it and use the floor brush assembly 200 to clean the work surface.

[0056] The floor brush assembly 200 is rotatably connected to the body 100, allowing the body 100 to switch between an upright and tilted state. When the body 100 is tilted, the cleaning equipment can clean the work surface, and the floor brush assembly 200 can maintain contact with the work surface, thereby achieving the purpose of cleaning dirt on the work surface.

[0057] The cleaning equipment may include functional components such as a water supply system and a sludge suction system. Specifically, the water supply system may include a clean water tank, a water pump, and a fluid distributor; the sludge suction system may include a wastewater tank, a recovery channel, a suction port, and a suction motor. The cleaning medium in the clean water tank is sprayed onto the working surface or onto the cleaning unit in the floor brush assembly 200 by the fluid distributor under the action of the water pump. The cleaning unit rotates on the working surface and picks up dirt. The dirt picked up by the cleaning unit detaches from the cleaning unit under the centrifugal force of the rotating unit; alternatively, the dirt picked up by the cleaning unit is scraped off the cleaning unit by the scraper at the suction port, thus detaching from the cleaning unit. Under the suction force of the suction motor, the dirt detached from the cleaning unit enters the recovery channel through the suction port and is recovered into the wastewater tank. The scraper can be located above the suction port, extending in a direction parallel to the axis of the roller brush, and its extension length is approximately the same as the length of the cleaning unit.

[0058] The cleaning equipment may also include a walking mechanism 201 for the cleaning equipment to move and perform cleaning work. The walking mechanism 201 may be a travel wheel mounted on the floor brush assembly 200, which allows the cleaning equipment to move on the work surface by the user applying a forward or backward pushing force; or, when the cleaning equipment of this disclosure is a cleaning robot, it moves on the work surface under its own driving force. This document does not specifically limit other structures besides the floor brush assembly 200; those skilled in the art can select appropriate components based on existing technology.

[0059] refer to Figure 2 and Figure 3 The floor brush assembly 200 includes: a floor brush housing 1, a first cleaning unit, and a second cleaning unit. The first cleaning unit has a first cleaning component, which is rotatably connected to the floor brush housing 1 along a first rotation axis, allowing the first cleaning component to clean the work surface. In one embodiment of this disclosure, the first cleaning unit is a roller brush 2, and the rotation axis of the roller brush 2 is the first rotation axis, which is constructed parallel to the work surface, thereby allowing the roller brush to perform wet mopping of the work surface during rotation. Figure 2 As shown, the roller brush 2 has a cylindrical structure, with its two ends rotatably connected to the floor brush housing 1. Cleaning cotton, brush bristles 21, or other first cleaning components for cleaning can be provided on the outer surface of the roller brush 2. The following description will use the roller brush 2 as the first cleaning unit and the brush bristles 21 as the first cleaning component as an example. However, depending on the type of cleaning equipment, the first cleaning unit can also be a mop tray, a broom tray, or other structures; this disclosure does not limit this.

[0060] refer to Figure 4 One end of the roller brush 2 is rotatably connected to the floor brush housing 1, so that the floor brush housing 1 can provide support for one end of the roller brush 2. One end of the drive device 4 is connected to the floor brush housing 1, and the other end extends into the cavity of the roller brush 2 and is connected to the roller brush 2 in a transmission manner. Thus, the drive device 4 can provide support for the roller brush 2, and the roller brush 2 can be driven to rotate relative to the floor brush housing 1 by the rotation of the output end of the drive device 4, so as to complete the cleaning of the working surface.

[0061] Specifically, such as Figure 2 As shown, the two sides of the floor brush housing 1 along the axial direction of the roller brush 2 are defined as the drive side 11 and the disassembly side 12, respectively. (Reference) Figures 2 to 4 A first arm 5 located on the drive side 11 and a second arm 6 located on the disassembly side 12 are provided on opposite sides of the brush housing 1. One end of the first arm 5 and the second arm 6 are respectively connected to the brush housing 1, and the other end extends outward, so that the first arm 5, the second arm 6 and the brush housing 1 form an approximately U-shaped accommodating space, in which the roller brush 2 and other components can be arranged.

[0062] refer to Figure 2 and Figure 4A drive device 4 for rotating the first cleaning unit is mounted on the first support arm 5. One end of the drive device 4 is fixedly connected to the first support arm 5, and the other end passes through the cavity of the roller brush 2, with the output end of the drive device 4 being connected to the roller brush 2 for transmission, so that the drive device 4 can drive the roller brush 2 to rotate. Specifically, the drive device 4 includes a motor 41, a drive shaft 42, and a transmission part 43. The motor 41 can drive the drive shaft 42 and the transmission part 43 to rotate synchronously. The transmission part 43 may be provided with a concave-convex structure so that it can cooperate with the inner wall of the roller brush 2, thereby realizing the rotation of the roller brush 2 driven by the motor 41. Since the drive device 4 is located on the first support arm 5, when the cleaning equipment needs maintenance, such as when the roller brush 2 needs to be replaced after wear, the second support arm 6 can be removed to pull out the roller brush 2.

[0063] refer to Figure 3 and Figure 4 The first cleaning unit is configured to be detachably connected to the brush housing 1 via a second arm 6. The second arm 6, located on the detachment side 12, is detachably fixed to the brush housing 1. One end of the roller brush 2 is rotatably connected to the second arm 6 via a bearing or a method well-known to those skilled in the art. For example, a bearing seat can be provided at a corresponding position on the second arm 6, with the inner ring of the bearing fixed to the bearing seat and the outer ring fixed to the inner wall of the roller brush 2, or fixed to a mounting bracket provided on the inner wall of the roller brush 2. This achieves support and relative rotation between the roller brush 2 and the second arm 6. The second arm 6 is detached from the brush housing 1, and the second arm 6 and the roller brush 2 are simultaneously removed from the brush housing 1, thus achieving the disassembly of the roller brush 2. Alternatively, the roller brush 2 and the second support arm 6 can be detachably and rotatably connected. While ensuring the rotational cooperation between the roller brush 2 and the second support arm 6, the roller brush 2 can also be removed from the second support arm 6 after the second support arm 6 and the roller brush 2 are removed from the floor brush housing 1. This makes it convenient for users to replace or maintain the roller brush 2 when it is worn or damaged.

[0064] The first arm 5 and the second arm 6 typically have a certain thickness to support the drive unit 4 and the roller brush 2. The first arm 5, located on the drive side 11, is usually thicker because the drive unit 4, mounted on the first arm 5, occupies a certain thickness, and since the drive unit 4 is suspended from the first arm 5, the thickness of the first arm 5 itself needs to be sufficient to support the weight of the drive unit 4. Because the roller brush 2 is located between the first arm 5 and the second arm 6, the thickness of the first arm 5 and the second arm 6 prevents the roller brush 2 from being flush with the left and right sides of the floor brush housing 1. Understandably, in the axial direction of the roller brush 2, the length of the roller brush 2 is less than the length of the floor brush housing 1. Therefore, in actual cleaning scenarios, zero-edge contact is not possible, and the sides of the roller brush 2 will inevitably have a certain distance from the walls, furniture edges, etc., resulting in cleaning dead zones. Specifically, the roller brush 2 on the drive side 11 has a gap of approximately 10mm from the side edge.

[0065] To address the issues of unevenness between the roller brush 2 and the sides of the floor brush housing 1, resulting in inability to achieve zero-edge cleaning and poor cleaning performance, the floor brush assembly 200 of this disclosure also includes a second cleaning unit with a second cleaning component. Specifically, in a direction parallel to the first rotation axis, i.e., the rotation axis of the roller brush 2 (parallel including coincidence), the second cleaning unit is located on at least one side of the first cleaning unit, and the cleaning surface of the second cleaning unit is configured to extend from the cleaning surface of the first cleaning unit to the outside of the floor brush housing 1. This allows the second cleaning unit to clean the working surface located from the side of the roller brush 2 to the outside of the floor brush housing 1, expanding the cleaning area and compensating for the blind spots caused by the installation requirements of the traditional roller brush 2. Consequently, when the cleaning equipment of this disclosure performs cleaning operations along walls or other obstacles, it can reduce the distance between the cleaning unit and the wall or obstacle, and clean blind spots that the roller brush 2 cannot reach, reducing the omission of dirt in blind spots and improving the user experience.

[0066] The second cleaning unit is configured to rotate relative to the working surface about a second rotation axis. This second rotation axis is offset from the first rotation axis; specifically, the angle between the second and first rotation axes is configured to be greater than 0° and less than or equal to 90°, allowing the first and second cleaning units to rotate in different directions. This enables the first and second cleaning units to be rotatably connected to the floor brush housing 1 using different connection methods, thus compensating for cleaning blind spots caused by installation issues.

[0067] The second cleaning unit is configured to move dirt from the working surface toward the first cleaning unit during rotation, thereby allowing the dirt to be centrally cleaned by the first cleaning unit. This is because, in a specific embodiment of this disclosure, the roller brush 2 is the main cleaning unit of the cleaning equipment, and the floor brush assembly 200 is equipped with components for collecting dirt, such as a suction port or a dust suction port, for centralized processing of the dirt cleaned by the roller brush 2. Based on this, the second cleaning unit of this disclosure is an auxiliary cleaning unit of the cleaning equipment, which moves dirt from the corresponding working surface toward the roller brush 2 during rotation, thereby allowing for centralized cleaning by the roller brush 2.

[0068] In one embodiment of this disclosure, the second cleaning unit can move dirt to the front of the roller brush 2. In this case, the roller brush 2 can further clean this portion of dirt. The user only needs to continue pushing the cleaning device forward, and the roller brush 2 can naturally clean the dirt located in its path. The second cleaning unit can also move dirt to the rear of the roller brush 2. In this case, the dirt can be sucked away by the suction port located at the rear of the roller brush 2. Alternatively, the user can repeatedly drag the cleaning device back and forth, thereby cleaning by the roller brush 2 during the movement of the cleaning device.

[0069] This disclosure compensates for cleaning blind spots between the first cleaning unit and the outer side of the brush housing 1 by providing a second cleaning unit on at least one side of the first cleaning unit and extending the cleaning surface of the second cleaning unit to the outside of the brush housing 1, thereby increasing the cleaning coverage. When cleaning along edges, the side of the roller brush 2 cannot achieve zero-edge contact; the second cleaning unit can reach into cleaning dead corners, filling the gaps between the roller brush 2 and the walls or furniture edges, thus achieving thorough cleaning. Furthermore, the second cleaning unit can move dirt on the work surface towards the roller brush 2, thereby reducing stain residue and improving cleaning effectiveness.

[0070] In one embodiment of this disclosure, reference is made to Figure 2 and Figure 6 The second cleaning unit is a side brush 3, and the second cleaning component is the bristles 31 on the side brush 3. The side brush 3 is located on at least one side of the roller brush 2, and its axis of rotation is offset from the axis of rotation of the roller brush 2. Since the side brush 3 is located on the outside of the roller brush 2, the cleaning blind spot left between the outside of the roller brush 2 and the outside of the floor brush housing 1 can be reduced, achieving zero edge contact of the floor brush assembly 200. The second cleaning unit can also be other cleaning components besides the side brush 3, such as a mop tray, a sweeping tray, etc. The following will use the side brush 3 as an example for specific explanation.

[0071] In one specific embodiment, the second rotation axis is perpendicular to the first rotation axis, and the rotation axis of the side brush 3 is configured to be perpendicular to the working surface. In this embodiment, the rotation axis of the side brush 3 is perpendicular to the rotation axis of the roller brush 2, so that the entire bottom surface of the side brush 3 can be used to clean the working surface, thereby maximizing the cleaning efficiency of the side brush 3. In another embodiment, the rotation axis of the side brush 3 is not necessarily perpendicular to the working surface, but may also be at a certain angle to the vertical direction. When cleaning along the edge, the inclined side brush 3 can extend to a more outer position, thereby further expanding the cleaning area. Moreover, the bristles of the inclined side brush 3, which are closer to the working surface during operation, can generate greater pressure on the working surface, which is beneficial to improving the cleaning effect. This disclosure does not impose specific limitations on the angle of the rotation axis of the side brush 3.

[0072] In one embodiment of this disclosure, the second cleaning unit and the first cleaning unit are configured to be arranged in the direction of the first rotation axis, that is, the roller brush 2 and the side brush 3 are arranged in the direction of the rotation axis of the roller brush 2. Specifically, the orthographic projection of the second cleaning unit in the direction of the first cleaning unit axis is configured not to exceed the first cleaning unit, that is, the orthographic projection of the side brush 3 in the direction of the roller brush 2 axis does not exceed the roller brush 2. The projection of the roller brush 2 on the working surface has front and rear boundaries, and the distance between the front and rear boundaries is the diameter of the roller brush 2. The front and rear boundaries of the projection of the side brush 3 on the working surface do not exceed the front and rear boundaries of the projection of the roller brush 2 on the working surface, thereby restricting the front and rear position of the side brush 3 to the range of the side projection of the roller brush 2. In this disclosure, the side brush 3 is located on at least one side of the roller brush 2 and is not forward or backward relative to the roller brush 2. The side brush 3 does not obstruct the cleaning of the roller brush 2 and can compensate for the cleaning blind spots.

[0073] If the side brush 3 is set too far forward, that is, beyond the orthogonal projection of the roller brush 2 in the axial direction from the front, it will result in cleaning dead corners on the front side of the roller brush 2. Specifically, when cleaning the wall edge located in front of the cleaning device, the side brush 3 will contact the wall edge before the roller brush 2, causing the roller brush 2 to be unable to move forward. Even if the roller brush 2 continues to move forward, the front side of the roller brush 2 will not be able to reach the edge due to the presence of the side brush 3, resulting in cleaning dead corners.

[0074] If the side brush 3 is set too far back, that is, beyond the orthogonal projection of the roller brush 2 in the axial direction from the rear, cleaning dead corners will still exist on the side of the roller brush 2, and the side brush 3 cannot completely fill the gaps on the side of the roller brush 2. Specifically, when the roller brush 2 is cleaning along the edge, there are gaps between it and the wall or furniture edge. The side brush 3 can only fill the rear part of the gap, but cannot fill the front part of the gap, so cleaning dead corners will still exist.

[0075] Furthermore, the floor brush assembly 200 disclosed herein only has installation space on both sides of the roller brush 2. Specifically, the roller brush 2 is located at the front of the floor brush assembly 200, and a suction port, rubber strip 7, and other structures are provided on the rear side of the roller brush 2. It can be seen that there is no space to install the side brush 3 on either the front or rear side that exceeds the projection range of the roller brush 2. Therefore, the side brush 3 needs to be installed on at least one side in the axial direction of the roller brush 2, and its orthogonal projection does not exceed the roller brush 2. The roller brush 2 and the side brush 3 can compensate for the cleaning blind spot problem caused by the installation problem.

[0076] In one embodiment of this disclosure, the second cleaning unit is configured to move into the brush housing 1 under the action of an external force. Specifically, the side brush 3 is configured to be movably connected to the brush housing 1 and to be able to move relative to the brush housing 1 in a direction parallel to the axis of the roller brush. The side brush 3 can retract into the brush housing 1 when subjected to an external force. It should be noted that retracting into the brush housing 1 only means that the position of the side brush 3 is closer to the brush housing 1 when subjected to an external force, compared to its initial position when not subjected to an external force. During normal operation, the side brush 3 can be located in its maximum extended position, thereby filling the gap on at least one side of the roller brush 2 during edge cleaning, achieving comprehensive cleaning. When the side brush 3 collides with an obstacle, it can retract inward relative to the brush housing 1 to avoid obstacles, prevent the side brush 3 from being stuck by obstacles, avoid mutual damage caused by collisions between the side brush 3 and obstacles, and improve the user experience.

[0077] Specifically, an elastic device can be provided between the side brush 3 and the floor brush housing 1. When the side brush 3 collides with an obstacle, the elastic device compresses synchronously and drives the side brush 3 to retract inward, thereby achieving obstacle avoidance. When the external force of the obstacle disappears, the side brush 3 moves outward to the maximum extended position under the restoring force of the elastic device. In another embodiment, the side brush 3 can be connected to the floor brush housing 1 through a swing mechanism. The swing mechanism can actively drive the side brush 3 to extend or retract. When the cleaning equipment detects an obstacle or a collision signal, the control unit in the cleaning equipment can control the swing mechanism to actively drive the side brush 3 to retract inward, thereby achieving obstacle avoidance. The side brush 3 can also retract inward to avoid obstacles in other ways. This disclosure does not limit the specific obstacle avoidance form of the side brush 3.

[0078] In one embodiment of this disclosure, the second cleaning unit includes a body and bristles 31 disposed in the circumferential direction at the bottom of the body. Specifically, the bristles 31 can be bristles with a certain degree of hardness or soft rubber. Furthermore, the bristles 31 of the side brush 3 are conical, with the apex of the cone being the location of the body. The fixed ends of multiple clusters of bristles 31 are fixedly connected to the body, while the free ends extend freely outwards. The taper of the bristles 31 gradually decreases from the fixed ends to the free ends, spreading outwards on the working surface to form a ring-shaped cleaning surface. By setting the bristles 31 to a conical shape, the body of the side brush 3 will not directly contact the working surface; only the bristles 31 can contact the working surface, thereby preventing the body of the side brush 3 from scraping against the working surface.

[0079] In one embodiment of this disclosure, reference is made to Figure 6 The second cleaning unit is at least detachably connected to the first arm 5. The contact position between the second cleaning unit and the first cleaning unit is configured not higher than the first rotation axis and not higher than the bottom edge of the first arm 5. This achieves a structure that simplifies the installation of the side brush 3 to the greatest extent, miniaturizes the side brush 3, and requires no other additional parts for installation. The first arm 5 is located on the drive side 11 and is configured to install the drive device 4. As mentioned above, the first arm 5 typically has a greater thickness, resulting in a larger gap between the roller brush 2 on the drive side 11 and the side edge. Therefore, when only one side brush 3 is provided, it needs to be placed on the first arm 5, that is, on the drive side 11. In this way, the side brush 3 can fill the gap between the roller brush 2 and the side edge in the direction of the drive side 11 and clean the cleaning dead corners of the drive side 11. Two side brushes 3 can also be provided, which can be respectively placed on the first arm 5 and the second arm 6, thereby cleaning the cleaning dead corners on both sides of the roller brush 2.

[0080] Furthermore, when using the cleaning device, the user stands behind it. From the user's perspective, the drive side 11 is the right side, and the detachment side 12 is the left side. During cleaning, most users are right-handed and will grip the handle 101 with their right hand, using the right side as the edge for cleaning. Therefore, the side brush 3 needs to be positioned at least on the right side, i.e., the drive side 11, so that cleaning can reach areas that the roller brush 2 cannot cover when cleaning the edges.

[0081] In this embodiment, the orientation of the drive side 11 and the disassembly side 12 facilitates the user's replacement of the roller brush 2. It is understood that when the roller brush 2 needs to be replaced, the user will typically come to the front of the cleaning equipment. At this time, the disassembly side 12 is located on the user's right side, making it convenient for the user to perform the disassembly and assembly operations with their right hand.

[0082] In one embodiment of this disclosure, reference is made to Figures 6 to 9The second cleaning unit is configured to be connected to the first support arm 5 via a connecting mechanism. The connecting mechanism includes a mounting base 32 located on one of the second cleaning unit and the first support arm 5, and a rotating shaft 30 located on the other of the second cleaning unit and the first support arm 5. In this embodiment, as... Figure 6 As shown, the mounting base 32 is disposed on the side brush 3, and the rotating shaft 30 is disposed on the first support arm 5. The mounting base 32 can be part of the side brush 3 body as described above, or it can be a structure disposed above the body. The brush bristles 31 are located below the mounting base 32. In another embodiment, the mounting base 32 can be disposed on the first support arm 5, and the rotating shaft 30 can be disposed on the side brush 3. This disclosure does not limit the specific arrangement of the connecting mechanism.

[0083] refer to Figure 6 and Figure 8 A snap-fit ​​groove 301 is provided on the rotating shaft 30. The rotating shaft 30 extends into the inner cavity 321 of the mounting base 32 and is configured to engage with the snap-fit ​​groove 301 via a clamp 34. The side brush 3 is detachably connected to the rotating shaft 30 via the clamp 34, allowing the user to easily install and remove the side brush 3 using the clamp 34 to replace worn side brushes after a period of use. The snap-fit ​​groove 301 is an arc-shaped groove on the rotating shaft 30. Specifically, the diameter of a small section of the rotating shaft 30 gradually decreases and then gradually increases, forming a concave arc surface, which is the snap-fit ​​groove 301. Specifically, regarding the disassembly process: the user can directly pull the side brush 3 off the rotating shaft 30 with force. As the diameter of the locking groove 301 to the rotating shaft 30 gradually increases, the clamp 34 locked in the locking groove 301 is forced open and deformed, thus detaching from the locking groove 301; or, the user can also pull out the clamp 34, causing the clamp 34 to detach from the locking groove 301, thereby removing the side brush 3. Regarding the installation process: Users can pre-install the clamp 34 onto the side brush 3. After aligning the side brush 3 with the rotating shaft 30 (i.e., inserting the rotating shaft 30 into the inner cavity 321 through the hole at the top of the side brush 3), the user can directly apply force to install the side brush 3 onto the rotating shaft 30. During this process, the clamp 34 is stretched and deformed by the rotating shaft 30, and then springs back to its original position at the reduced diameter engagement groove 301, thus engaging with the engagement groove 301. Alternatively, after alignment, the user can insert the clamp 34 into the engagement groove 301 to install the side brush 3 onto the rotating shaft 30. The installed side brush 3 can rotate relative to the rotating shaft 30, thereby cleaning the working surface.

[0084] In one specific embodiment of this disclosure, reference is made to Figure 7 and Figure 9The mounting base 32 has grooves 322 on opposite sides that penetrate the inner cavity 321. The clamp 34 is configured to be clamped in the grooves 322, and the portion of the clamp 34 protruding from the inner cavity 321 is configured to engage with the snap-fit ​​groove 301. Furthermore, the two free ends of the clamp 34 are configured to be bent inward to form snap-fit ​​members 341. The two snap-fit ​​members 341 are configured to jointly form a clamping structure. The two snap-fit ​​members 341 are clamped in the grooves 322 under elastic force and are configured to extend to engage with the snap-fit ​​groove 301 on the rotating shaft 30.

[0085] A groove 322 penetrating the inner cavity 321 of the mounting base 32 divides the mounting base 32 into a first part 323 and a second part 324. For example... Figure 9 As shown, the middle portion of the clamp 34 is held elastically on the first portion 323 of the mounting base 32, that is, within the groove 322. The two free ends of the clamp 34 are bent to form two snap-fit ​​pieces 341, the ends of which abut against the second portion 324. During installation, the rotating shaft 30 is located in the inner cavity 321, and the portion of the clamp 34 protruding from the inner cavity 321 engages with the snap-fit ​​groove 301. Specifically, the two snap-fit ​​pieces 341 extend to engage with the snap-fit ​​groove 301, thereby being held elastically within the snap-fit ​​groove 301, allowing the side brush 3 to be installed onto the rotating shaft 30.

[0086] The above describes a specific structure for installing the side brush 3. Those skilled in the art can also install the side brush 3 in other ways. This disclosure does not specifically limit the installation method of the side brush 3. Several specific driving methods for the side brush 3 will be described in detail below.

[0087] In the cleaning state, the second cleaning unit is configured to contact the first cleaning unit, thereby causing the second cleaning unit to rotate. The cleaning state refers to the working state in which the first cleaning unit rotates to clean the working surface. (Reference) Figure 5A portion of the second cleaning element is configured to extend below the first cleaning element. The first cleaning element is configured to pre-press a portion of the second cleaning element onto the working surface, at least in the cleaning state, so as to drive the second cleaning unit to rotate during rotation. That is, a portion of the bristles 31 of the side brush 3 extends below the roller brush 2, and the first cleaning element on the surface of the roller brush 2 pre-presses a portion of the bristles 31 onto the working surface, at least during cleaning, thereby driving the side brush 3 to rotate together during the rotation of the roller brush 2. The cleaning surface at the bottom of the roller brush 2 can contact and engage with a portion of the non-cleaning surface of the side brush 3. Specifically, the non-cleaning surface of the side brush 3 can be the upper surface of the side brush 3, and a portion of the bristles 31 of the side brush 3 is located below the roller brush 2. When the roller brush 2 rotates, the friction between the roller brush 2 and the upper surface of the bristles 31 of the side brush 3 can drive the side brush 3 to rotate; that is, the roller brush 2 converts the horizontal force into a vertical rotational force on the side brush 3 through friction. This embodiment achieves the rotation of the side brush 3 by using the friction between the roller brush 2 and the side brush 3, thereby simplifying the rotation driving method of the side brush 3 to the greatest extent. This implementation does not require additional drive or transmission structures. Instead, the side brush 3 can be driven to rotate directly through the existing roller brush 2 structure. This solution has a simple structure and saves production costs.

[0088] The first cleaning unit of this disclosure can drive the second cleaning unit to rotate, that is, the roller brush 2 can drive the side brush 3 to rotate. Therefore, there is no need to set up an additional drive mechanism or transmission mechanism for the side brush 3, thereby saving space in the cleaning equipment. The roller brush 2 is the main cleaning unit of the cleaning equipment. Even with the additional side brush 3, the roller brush 2 can still maintain its original length, thus maintaining a sufficiently large cleaning area and not affecting the cleaning efficiency of the cleaning equipment. It can be seen that this disclosure provides a cleaning equipment that does not affect the cleaning efficiency of the cleaning equipment and can simultaneously achieve edge cleaning.

[0089] Specifically, in operation, the first cleaning unit is configured to rotate clockwise to clean the work surface, and the second cleaning unit rotates in a first direction under the action of the first cleaning unit to bring dirt from the work surface to the front of the first cleaning unit. That is, the roller brush 2 rotates clockwise to clean the work surface in operation, and the side brush 3 rotates in a first direction under the action of the roller brush 2 to bring dirt from the work surface to the front of the roller brush 2. When the cleaning equipment moves forward to clean, the roller brush 2 can rotate clockwise to clean the work surface, as shown in the reference. Figure 3 View direction, the forward rotation direction is the same as the counter-clockwise rotation (i.e.) Figure 3 (In the direction indicated by the arrow on the middle roller brush 2); Reference Figure 5 View direction, the forward rotation direction is... Figure 5 Below the arrow marked on the middle roller brush 2. Continue to refer to... Figure 5In the view orientation, the bristles 31 pressed under the roller brush 2 are subjected to a downward frictional force, causing the side brush 3 to rotate counterclockwise under the action of friction. Figure 5 The counterclockwise direction shown is the first direction.

[0090] When the side brush 3 rotates in the first direction, the bristles 31 that are not pressed under the roller brush 2 can clean the working surface located on the side of the cleaning range of the roller brush 2. These bristles 31 can carry the dirt on the working surface along with the side brush 3 as it rotates in the first direction. (Refer to...) Figure 5 In the view direction, the bristles 31 on the left side of the side brush 3 can clean the working surface on the left side of the roller brush 2. The bristles 31 on the left side can cause the dirt to rotate counterclockwise. Under the action of centrifugal force, the dirt will be thrown to the upper right position of the side brush 3, that is: Figure 2 From this perspective, the side brush 3 can bring dirt to the front of the roller brush 2 as it rotates in the first direction. The roller brush 2 can continue to move forward during the cleaning process, thereby cleaning the dirt brought to the front of the roller brush 2 by the side brush 3. Thus, the roller brush 2 can concentrate and clean the dirt, achieving a thorough cleaning.

[0091] In actual cleaning scenarios, because part of the side brush 3 is pressed under the roller brush 2, the clean water and cleaning solution adhering to the roller brush 2 can be transferred to the bristles 31 of the side brush 3 during the cleaning process. This results in the bristles 31 of the side brush 3 being covered with water and cleaning solution, thereby improving the cleaning effect of the side brush 3. During the rotation of the side brush 3, the bristles 31 that are not pressed under the roller brush 2 can carry dirt with them as they rotate. When these bristles 31 rotate to the underside of the roller brush 2, they directly transfer the dirt to the surface of the roller brush 2, thus achieving the cleaning of the side brush 3.

[0092] The roller brush 2 does not need to remain pressed against the bristles 31 at all times; it only needs to press down some of the bristles 31 during the cleaning process. For example, when the user lifts the cleaning device upwards during cleaning, the roller brush 2 can move upwards simultaneously and leave the ground, disengaging from the side brush 3. When the user puts the cleaning device down, the roller brush 2 naturally falls back to a position close to the ground while cleaning, pressing down some of the bristles 31 again, thereby causing the side brush 3 to rotate.

[0093] Furthermore, the roller brush 2 maintains a constant pressure on the work surface during the cleaning process, thus ensuring its cleaning effect. As the roller brush 2 rotates on the work surface, this pressure ensures that the friction between the roller brush 2 and the bristles 31 of the side brush 3 remains at a certain level, making the friction sufficient to rotate the side brush 3. As the roller brush 2 gradually wears down during use, it automatically lowers (not visible to the naked eye), maintaining a constant pressure on the work surface. Therefore, regardless of whether the roller brush 2 is new or worn, its pressure on the work surface remains constant, and its friction on the bristles 31 of the side brush 3 is thus maintained at a certain level, enabling the side brush 3 to rotate.

[0094] In one embodiment of this disclosure, the rotational speed of the second cleaning unit is more than three times that of the first cleaning unit, that is, the rotational speed of the side brush 3 is more than three times the rotational speed of the roller brush 2. Figure 2 As shown, the circumference of the roller brush 2 is much larger than the circumference of the bristles 31 of the side brush 3. Specifically, the circumference of the roller brush 2 can be more than three times the circumference of the bristles 31. This means that one rotation of the roller brush 2 can cause the side brush 3 to rotate more than three times, thus making the rotational speed of the side brush 3 more than three times that of the roller brush 2. The side brush 3, located outside the roller brush 2, fills the cleaning blind spots. The high-speed rotating side brush 3 can better clean the working surface, improving the zero-edge cleaning effect of the floor brush assembly 200.

[0095] In one embodiment of this disclosure, the second cleaning unit is configured to protrude beyond the outer side of the floor brush housing 1 and is configured to rotate in a first direction under the friction of an obstacle to carry dirt from the working surface to the front of the first cleaning unit; or, the second cleaning unit is configured to rotate in a second direction under the friction of an obstacle to carry dirt from the working surface to the rear of the first cleaning unit. Wherein, the force exerted by the obstacle on the second cleaning unit is greater than the force exerted by the first cleaning unit on the second cleaning unit. In this embodiment, the side brush 3 is rotated not only by the roller brush 2 but also by the friction of the obstacle.

[0096] Specifically, refer to Figure 7 and Figure 8The side brush 3 has a flange 33 protruding from the outer side of the brush housing 1 on its outer peripheral surface. The flange 33 is configured to drive the second cleaning unit to rotate under the frictional force of an obstacle. The flange 33 can be a buffer portion on the outer peripheral surface of the side brush 3, protruding from the outer side of the brush housing 1 to generate greater friction with obstacles (e.g., walls, baseboards, furniture sides). In addition, the buffer portion has a certain degree of elasticity, thus also preventing scratches and cushioning collisions. The elastic buffer portion can also increase the friction with obstacles, allowing the side brush 3 to rotate under the frictional force of the obstacle. When the cleaning device is cleaning along the edge, the flange 33 can rest against the obstacle, for example, when the cleaning device is cleaning against a wall, the flange 33 can rest against the wall surface; when the user moves the cleaning device back and forth, the flange 33 drives the side brush 3 to rotate under the frictional force of the wall surface.

[0097] When the user moves the cleaning device backward from the edge, the flange 33, under the frictional force of the obstacle moving forward, drives the side brush 3 to rotate in the first direction. Simultaneously, since the roller brush 2 always rotates forward, it also causes the side brush 3 to rotate in the first direction due to friction. At this time, the roller brush 2 and the flange 33 provide the side brush 3 with the same rotational force. The side brush 3, rotating in the first direction, can remove dirt from the edge and carry dirt from the working surface to the front of the roller brush 2. During the cleaning process, the user usually drags the device back and forth repeatedly, so the roller brush 2 can move forward during subsequent cleaning, thus cleaning the dirt carried to the front of the roller brush 2 by the side brush 3.

[0098] When the user moves the cleaning device forward at the edge position, the flange 33, under the frictional force of the obstacle moving backward, drives the side brush 3 to rotate in the second direction. Simultaneously, since the roller brush 2 always rotates forward, it provides the side brush 3 with a rotational force in the first direction. At this time, the rotational forces provided by the roller brush 2 and the flange 33 to the side brush 3 are in opposite directions. Because the force exerted by the obstacle on the side brush 3 is greater than the force exerted by the roller brush 2 on the side brush 3, the side brush 3 will rotate in the second direction to remove dirt from the edge position and carry dirt from the working surface to the rear of the roller brush 2. During the cleaning process, the user usually drags the device back and forth repeatedly, so the roller brush 2 can move backward during subsequent cleaning, thereby cleaning the dirt carried to the rear of the roller brush 2 by the side brush 3.

[0099] In one embodiment of this disclosure, the side brush 3 body can be a roller, which is configured to extend to the outside of the floor brush housing 1 and to drive the side brush 3 to rotate under the frictional force of an obstacle. The roller drives the side brush 3 to rotate in a manner basically the same as the flange 33 mentioned above. The outer peripheral surface of the roller is configured as an arc surface. When the cleaning device cleans along the edge, the roller can abut against the obstacle, for example, when the cleaning device cleans against a wall, the roller can abut against the wall surface; when the user moves the cleaning device back and forth, the roller drives the side brush 3 to rotate under the frictional force of the wall surface. This embodiment does not require an additional flange 33 to be provided on the side brush 3 body for friction drive, but uses the side brush 3 body itself to drive the side brush 3 to rotate, thereby simplifying the structure of the side brush 3 and saving production costs.

[0100] A suction port is provided on the floor brush housing 1 at the rear side of the first cleaning unit. The suction port is located behind and facing the first cleaning unit, and is situated in the middle of the rear side of the first cleaning unit. Dirt cleaned by the first cleaning unit is sucked away through the suction port. In one example, the suction port is configured to at least clean dirt brought to the rear side of the first cleaning unit by the second cleaning unit. Dirt brought to the rear side of the roller brush 2 by the side brush 3 can be directly sucked away by the suction port. Specifically, the suction port can be configured as an elongated strip extending along the axial direction of the roller brush 2, with a length at least equal to the length of the roller brush 2, thereby facilitating the cleaning of dirt adsorbed by the roller brush 2. To improve the cleaning effect of the suction port, refer to... Figure 2 and Figure 3 A rubber strip 7 is provided at the bottom of the floor brush housing 1 on the rear side of the roller brush 2. The rubber strip 7 can abut against the working surface to form a sealing structure, which can make the airflow of the suction port more concentrated, thereby improving the suction power of the suction port.

[0101] This embodiment features a flange 33 protruding beyond the outer side of the floor brush housing 1 on the outer peripheral surface of the side brush 3. This allows the side brush 3 to be driven to rotate simultaneously in two ways, enabling the cleaning device to adapt to more cleaning scenarios. When cleaning along walls, cabinets, or similar surfaces, the flange 33 abuts against these surfaces, causing the side brush 3 to rotate in either the first or second direction under friction. This carries dirt away from the edge and towards the front or rear of the roller brush 2, achieving thorough cleaning. When the cleaning device is in a relatively open area, the roller brush 2 drives the side brush 3 to rotate in the first direction. This increases the cleaning range in open areas and improves the cleaning effect. Furthermore, when encountering obstacles with small surface areas, such as table legs or chair legs, the flange 33 may not accurately abut against their surfaces. In this case, the roller brush 2 still drives the side brush 3 to rotate, filling the gap between the side of the roller brush 2 and the floor brush housing 1, reducing missed dirt in blind spots and improving the user experience.

[0102] In one embodiment of this disclosure, the second cleaning unit includes bristles 31, the length of which is configured to be greater than or equal to 5 mm. Specifically, since the side brush 3 bristles 31 are tapered, the length of the bristles 31 in this embodiment refers to the length of the projection of the bristles 31 onto the working surface, that is, the actual length of the bristles 31 used for cleaning on the working surface. Figure 5 As shown, the bristles 31 of the side brush 3 are evenly arranged in the circumferential direction of the side brush 3 body. When the length of the bristles 31 is greater than or equal to 5 mm, the total diameter of the side brush 3 is greater than or equal to 10 mm. As mentioned above, the roller brush 2 on the drive side 11 has a gap of about 10 mm from the side edge. Therefore, the total diameter of the side brush 3 is at least 10 mm, thereby filling the gap between the roller brush 2 and the side edge in the drive side 11 direction.

[0103] When the diameter of the side brush 3 is greater than 10 mm, the side of the bristles 31 adjacent to the first cleaning unit is configured to extend below the first cleaning element, and the side away from the first cleaning unit is configured to extend to be flush with or beyond the outer side of the floor brush housing 1. The side of the bristles 31 adjacent to the roller brush 2 extends below the roller brush 2, so that the roller brush 2 can drive the side brush 3 to rotate during rotation. The side of the bristles 31 away from the roller brush 2 extends outward to fill the gap on the side of the roller brush 2. Specifically, when there is a gap of about 10 mm between the roller brush 2 and the side, the length of the side brush 3 not pressed under the roller brush 2 in the axial direction of the roller brush 2 exceeds 10 mm, which is sufficient to fill the gap.

[0104] The bristles 31 need to extend outwards to be flush with the outer side of the brush housing 1, thereby filling the gap between the outer side of the brush housing 1 and the roller brush 2. The roller brush 2 cannot be flush against the edge due to the thickness of the brush housing 1 and the first arm 5, second arm 6, etc. Therefore, by extending the bristles 31 of the side brush 3 to be flush with the outer side of the brush housing 1, the cleaning dead angles caused by the thickness of the side of the brush housing 1 can be filled. At this point, as long as the outer side of the brush housing 1 is kept tightly against the edge during edge cleaning, the side brush 3 can completely fill the gap between the roller brush 2 and the side.

[0105] In one embodiment of this disclosure, the total area of ​​the second cleaning member in contact with the first cleaning member is greater than the total area of ​​its cleaning surface, and / or, the coefficient of friction of the surface of the second cleaning member in contact with the first cleaning member is greater than the coefficient of friction of its cleaning surface. The total area of ​​the non-cleaning surface above the bristles 31 can be greater than the total area of ​​the cleaning surface at its bottom, which makes the cross-section of the bristles 31 inverted trapezoidal, thereby increasing the friction between the bristles 31 of the roller brush 2 and the side brush 3, and enhancing the force with which the roller brush 2 drives the side brush 3 to rotate.

[0106] The coefficient of friction of the non-cleaning surface on the bristles 31 can be greater than that of the cleaning surface at its bottom. The non-cleaning surface of the bristles 31 can be roughened to a certain extent. For example, the non-cleaning surface of the bristles 31 can be made uneven, thereby increasing the friction between the bristles 31 of the roller brush 2 and the side brush 3, and increasing the force with which the roller brush 2 drives the side brush 3 to rotate.

[0107] In actual cleaning, users usually avoid the cleaning equipment from scraping against the wall. Therefore, the bristles 31 should ideally extend outward beyond the outer side of the brush housing 1. In this way, when cleaning along the edge, it is not necessary to make the outer side of the brush housing 1 tightly against the edge. The side brush 3 can still completely fill the gap between the roller brush 2 and the side, reducing the cleaning blind spots left between the outer side of the roller brush 2 and the outer side of the brush housing 1, and achieving zero edge contact of the brush assembly 200.

[0108] When the length of the bristles 31 is exactly 5mm, that is, the diameter of the side brush 3 is exactly 10mm, in order to fill the 10mm gap between the roller brush 2 and the side, the side brush 3 needs to be completely set outside the roller brush 2, and the orthographic projections of the second cleaning unit and the first cleaning unit on the working surface are constructed to not overlap. Since the orthographic projections of the side brush 3 and the roller brush 2 on the working surface do not overlap, the bristles 31 will not press under the roller brush 2, and the roller brush 2 cannot drive the side brush 3 to rotate through friction. The side brush 3 needs to be driven by other means. Therefore, this disclosure also provides the following three specific driving methods, so that the side brush 3 can be driven to rotate even when the roller brush 2 and the side brush 3 are separately set. Of course, the following three driving methods are only specific examples, and the driving methods of the side brush 3 are not limited to the following three.

[0109] In one embodiment of this disclosure, the second cleaning unit is configured to protrude outward from the outer side of the brush housing 1 and is configured to rotate in a first direction under the friction of an obstacle to carry dirt on the working surface to the front of the first cleaning unit; or, the second cleaning unit is configured to rotate in a second direction under the friction of an obstacle to carry dirt on the working surface to the rear of the first cleaning unit. Specifically, the outer peripheral surface of the side brush 3 is provided with a flange 33 protruding outward from the outer side of the brush housing 1, and the flange 33 is configured to drive the side brush 3 to rotate under the friction of an obstacle; or, the body of the side brush 3 is configured to drive the side brush 3 to rotate under the friction of an obstacle.

[0110] When the user moves the cleaning device backward from the edge position, the flange 33 or the body of the side brush 3 rotates in the first direction due to the frictional force of the obstacle moving forward, thus carrying the dirt on the working surface to the front of the roller brush 2. When the user moves the cleaning device forward from the edge position, the flange 33 or the body of the side brush 3 rotates in the second direction due to the frictional force of the obstacle moving forward, thus carrying the dirt on the working surface to the rear of the roller brush 2. The roller brush 2 can move back and forth during subsequent cleaning, thereby cleaning the dirt carried to the front or rear of the roller brush 2 by the side brush 3. The dirt located on the rear of the roller brush 2 can also be directly cleaned by the suction port located at the rear of the roller brush 2.

[0111] This embodiment achieves the rotation of the side brush 3 by means of the friction of the obstacle. When the cleaning device cleans along the wall, cabinet, or other similar surfaces, the flange 33 or the body of the side brush 3 can abut against the wall, cabinet, or other similar surfaces, thereby causing the side brush 3 to rotate in the first or second direction under its frictional force, thus carrying the dirt to the front or rear side of the roller brush 2, thereby achieving concentrated cleaning of dirt by the roller brush 2.

[0112] In another embodiment of this disclosure, an airflow channel is provided on the floor brush housing 1, and the airflow in the airflow channel is configured to drive the second cleaning unit to rotate. Specifically, an air outlet or air intake device can be provided on the floor brush housing 1, and the air outlet or air intake is located adjacent to the side brush 3. The airflow can drive the side brush 3 to rotate, thereby enabling the side brush 3 to clean the side of the roller brush 2. In a specific embodiment, the airflow channel can be connected to the exhaust channel of the suction motor of the cleaning device. The air discharged through the exhaust channel of the suction motor flows through the airflow channel and is discharged from the air outlet of the airflow channel toward the side brush 3, and the discharged airflow drives the side brush 3 to rotate. Alternatively, the airflow channel can be the aforementioned suction port. While cleaning the dirt on the roller brush 2 and the working surface, the airflow of the suction port can also drive the side brush 3 to rotate, thereby cleaning the dirt on the side of the roller brush 2, reducing the cleaning blind spot left between the outer side of the roller brush 2 and the outer side of the floor brush housing 1, and achieving zero edge contact of the floor brush assembly 200.

[0113] In another embodiment of this disclosure, a transmission mechanism can be provided between the roller brush 2 and the side brush 3. When the driving device 4 drives the roller brush 2 to rotate in the horizontal direction, the transmission mechanism can convert the rotational force of the roller brush 2 rotating along the horizontal axis into the rotational force of the side brush 3 rotating along the vertical axis. The transmission mechanism can include various types of transmission mechanisms such as gears, connecting rods, or sprockets, and this disclosure does not limit it. By providing a transmission mechanism, this embodiment enables the roller brush 2 to simultaneously drive the side brush to rotate during rotation, thereby cleaning the dirt on the side of the roller brush 2, reducing the cleaning blind spot left between the outer side of the roller brush 2 and the outer side of the floor brush housing 1, and achieving zero edge contact of the floor brush assembly 200.

[0114] According to a second aspect of this disclosure, a cleaning device is also provided, including a floor brush assembly 200. The floor brush assembly 200 includes a floor brush housing 1, a first cleaning unit, and a second cleaning unit. The first cleaning unit is rotatably connected to the floor brush housing 1. In the working state, the first cleaning unit is configured to rotate forward, and the cleaning device tends to move forward under the action of the forward rotation of the first cleaning unit. (Reference) Figure 2 and Figure 3 The arrow on the roller brush 2 indicates the direction of rotation. The second cleaning unit is configured to protrude from the outside of the brush housing 1 and is configured to rotate under the friction of an obstacle. When the cleaning device moves forward and the second cleaning unit does not contact the obstacle, the second cleaning unit is configured to rotate in the first direction; when the cleaning device moves forward and the second cleaning unit contacts the obstacle, the second cleaning unit is configured to rotate in the second direction.

[0115] The second cleaning unit can rotate in the first direction under the driving force of the first cleaning unit, or under the driving force of other driving structures. When the second cleaning unit comes into contact with an obstacle, it can rotate in the second direction under the action of friction. Therefore, the force exerted by the obstacle on the second cleaning unit is greater than the rotational driving force in the first direction.

[0116] The cleaning equipment in this embodiment has the same composition and connection relationship as the cleaning equipment described above. Those skilled in the art can undoubtedly deduce the composition and usage of the floor brush component 200 in this embodiment based on the description above, and will not be described in detail here.

[0117] Example 2

[0118] This embodiment also provides a cleaning device. The difference from Embodiment 1 is that the second cleaning unit in this embodiment has a different structure than that in Embodiment 1. All other structures on the cleaning device are completely consistent with those described in Embodiment 1, and will not be repeated here. See below for reference. Figures 10 to 17 The structure and operation of the second cleaning unit in this embodiment will be described in detail.

[0119] refer to Figure 11 The second cleaning unit includes a main body, and a second cleaning component is disposed on the bottom end face of the main body. Specifically, the second cleaning component is at least one brush blade 36 disposed on the main body. In this embodiment, the second cleaning unit is a side brush 3, and the main body of the side brush 3 may include a mounting base 32. In this embodiment, three brush blades 36 are disposed on the lower end face (i.e., the face facing the working surface) of the mounting base 32, which are spaced apart in the circumferential direction. In other embodiments, the number of brush blades 36 may also be two, four, five, etc. This embodiment is described using three brush blades 36 as an example.

[0120] In a clean state, refer to Figures 18 to 20 The second cleaning unit is configured to rotate relative to the working surface about a second rotation axis in a first direction. Specifically, the second rotation axis is configured to deviate from the first rotation axis of the roller brush 2; the angle between the second and first rotation axes is configured to be greater than 0° and less than or equal to 90°, thereby causing the roller brush 2 and the side brush 3 to rotate in different directions. Preferably, the second rotation axis is perpendicular to the first rotation axis, and the rotation axis of the side brush 3 is configured to be perpendicular to the working surface. This allows the entire bottom surface of the side brush 3 to be used for cleaning the working surface, thus maximizing the cleaning efficiency of the side brush 3.

[0121] At least in the cleaning state, the brush blade 36 is configured to deform away from the center of the body under external force during rotation, thereby cleaning the working surface. In the non-cleaning state, the brush blade 36 is at least partially in contact with the working surface, for example: Figure 11 As shown, the lower end face S1 of the brush blade 36 contacts the working surface. When the side brush 3 starts to rotate, the lower end face S1 of the brush blade 36 in contact with the working surface will rub against the working surface. Under the action of friction and compression from the working surface, as well as under the action of centrifugal force, the flexible brush blade 36 will deform. Specifically, the brush blade 36 deforms in a direction away from the center of the body, and all three brush blades 36 can deform together in an outward direction, that is, open outward. This makes the inner side surface S2 of the brush blade 36 (that is, the side of the brush blade 36 facing the center of the body) fit against the working surface, increasing the contact area between the brush blade 36 and the working surface, and improving the cleaning effect of the brush blade 36 on the working surface.

[0122] In one embodiment of this disclosure, reference is made to Figure 13 The main body of the side brush 3 is located within the projection area of ​​the floor brush housing 1 on the working surface. It is understood that the main body of the side brush 3 is usually made of a rigid material that cannot be deformed. During the operation of the cleaning equipment, the main body of the side brush 3 located within the projection area of ​​the floor brush housing 1 on the working surface will not expand or come into contact with obstacles, thereby preventing the cleaning equipment from being stuck due to the side brush 3.

[0123] In the cleaning state, the brush blade 36 is configured to extend beyond the projection area of ​​the floor brush housing 1 on the working surface. During actual cleaning, when cleaning along the edges, users typically avoid the cleaning device scraping against the wall, and there is also a gap between the roller brush 2 and the side of the floor brush assembly 200, resulting in a certain gap between the floor brush assembly 200 and the wall, thus leaving a certain cleaning blind spot. In this embodiment, the brush blade 36 can extend beyond the projection area of ​​the floor brush housing 1, allowing it to reach into the cleaning blind spot. This fills the gap between the roller brush 2 and the wall, reducing the cleaning blind spot and achieving zero edge contact with the floor brush assembly 200.

[0124] Furthermore, when the second cleaning unit is not rotating, the brush blade 36 is configured to be located within the edge of the main body. Specifically, the brush blade 36 can remain undeformed in the non-cleaning state. If part of the inner surface S2 of the brush blade 36 is already in contact with the working surface when the side brush 3 is not rotating, the strength at the deformation location will be insufficient, making it prone to breakage due to friction after a period of use, resulting in a shorter lifespan for the side brush 3.

[0125] Furthermore, in a non-clean state, the brush blade 36 can be configured to extend vertically downwards or be connected to the side brush 3 body in a slightly outward-expanding manner. The outward-expanding angle should not be too large. Specifically, the angle at which the brush blade 36 extends from the side brush 3 body toward the working surface is between 90° and 110°. Preferably, the brush blade 36 is vertically connected to the end face of the side brush 3 body. Compared to connecting the brush blade 36 to the side brush 3 body at a large outward angle, the vertically extending brush blade 36 has the greatest strength at the connection point with the body, and the connection position is less prone to breakage, thereby extending the service life of the side brush 3.

[0126] In one embodiment of this disclosure, the brush 36 is made of soft rubber with a hardness range of 50-70 HA. Traditional side brushes 3 are typically the bristle-embedded side brushes 3 used in Embodiment 1. Embedded bristles have problems such as easy hair tangling, easy wear, and easy dirt accumulation. Specifically, the fine bristles wear out severely during cleaning, requiring replacement approximately every hour, resulting in a poor user experience. If the bristles are thickened to overcome wear, the friction between the side brush 3 and the working surface becomes too high, making rotation difficult. When using the bristle-embedded side brush 3 to clean heavy stains such as soy sauce, dirt easily enters the bristle gaps. When moving to the next area, the side brush 3 carries the dirt to that area, failing to perform its cleaning function properly.

[0127] Unlike traditional bristle-embedded side brushes 3, this embodiment uses a soft rubber brush blade 36 to clean the work surface, effectively solving the problems of traditional bristle-embedded side brushes 3. Specifically, the wide brush blade 36 is not easily worn during cleaning and can be used for a long time without frequent replacement; the flexible brush blade 36 can adjust the contact area with the work surface through deformation, thereby changing the friction force it experiences, preventing the side brush 3 from becoming unable to rotate due to excessive friction; there are no areas on the brush blade 36 where dirt can easily accumulate, and the soft rubber material is very easy to clean after getting dirty. Therefore, the side brush 3 will not carry dirt into other areas after cleaning heavily soiled areas, ensuring the cleaning effect of the side brush 3.

[0128] In this embodiment, the hardness range of the brush blade 36 is 50-70. If the hardness of the brush blade 36 is less than 50, that is, the brush blade 36 is too soft, it will not be wear-resistant enough and will easily wear down under the friction and pressure of the working surface, resulting in a reduced service life of the side brush 3. If the hardness of the brush blade 36 is greater than 70, that is, the brush blade 36 is too hard, it will not easily deform or open up during the rotation of the side brush 3, thus failing to guarantee the contact area between the brush blade 36 and the working surface, reducing the cleaning effect.

[0129] Side brush 3 rotates in the first direction during cleaning. (Refer to...) Figure 11 , Figure 12 and Figure 20 The view direction (bottom view) is such that the first direction is clockwise. In one embodiment of this disclosure, reference is made to... Figure 11 and Figure 12 The two opposite ends of the brush blade 36 are designated as the first end 361 and the second end 362. In the first direction, the brush blade 36 is configured to extend from its first end 361 to its second end 362 in a manner that gradually moves away from the rotation center of the second cleaning unit. Specifically, when the side brush 3 begins to rotate in the first direction, the second end 362, which is farther from the rotation center of the side brush 3, will first be subjected to the frictional force of the working surface. This causes the brush blade 36 to gradually open outward from the first end 361 to the second end 362, which is beneficial for the brush blade 36 to deform and open outward, allowing the brush blade 36 to extend further outward, reaching or extending beyond the side of the floor brush, and causing the inner surface S2 of the brush blade 36 to adhere to the working surface. The extension direction of the brush blade 36 ensures that it can only be smoothly deployed when the side brush 3 rotates in the first direction. It should be noted that in the cleaning state, the roller brush 2 usually only rotates clockwise for cleaning, and the side brush 3 also only rotates in the first direction for cleaning, and will not rotate in the opposite direction. Therefore, the brush blade 36 only needs to be deployed in one direction and adhere to the working surface.

[0130] Furthermore, the side brush 3 rotates in the first direction during cleaning, which helps the brush blade 36 push away dirt located in front of the side brush 3 from the edge position and push it to the roller brush 2, thus facilitating the roller brush 2 to pick up the dirt. Specifically, refer to... Figure 20 In the view direction, the side brush 3 rotates in the first direction when cleaning along the edge. During the rotation, the brush blade 36 can scrape the dirt located on the left and front sides of the side brush 3 to the right side, that is, the side where the roller brush 2 is located, in a clockwise direction. The roller brush 2 can pick up the dirt, thereby achieving cleaning.

[0131] In practical applications, before the side brush 3 begins to rotate, the brush blade 36 may not be completely flat. For example, part of the brush blade 36 may be bent inward, causing part of its outer surface to adhere to the working surface. In this case, when rotation begins in the first direction, under the friction of the working surface, the brush blade 36 tends to gradually open outward from the first end 361 to the second end 362, thereby allowing the brush blade 36 to return to the open state where its inner surface S2 adheres to the working surface.

[0132] In one embodiment of this disclosure, the brush blade 36 is configured to be arc-shaped, with a first end 361 smoothly extending along an arc to a second end 362, thereby forming an arc-shaped brush blade 36. The arc-shaped structure makes the brush blade 36 more prone to deformation, such as... Figure 12 As shown, the three brush blades 36 can have identical shapes, thus making the cleaning range of the deformed brush blade 36 substantially circular. Furthermore, in the first direction, the brush blade 36 is configured to extend from its first end 361 to its second end 362 in a manner gradually moving away from the rotation center of the second cleaning unit, such that the brush blade 36 is connected to the body by a line. If a point connection is used to connect the brush blade 36 and the body, the strength of the connection point will be too low, making it prone to breakage during friction with the working surface. Therefore, this embodiment uses a line connection to connect the brush blade 36 and the body, enhancing the connection strength and extending the service life of the side brush 3.

[0133] In one embodiment of this disclosure, reference is made to Figure 11The first end 361 of the brush blade 36 is constructed such that its side gradually slopes from the point of connection with the body to its end face, such that the length of the free end of the brush blade 36 is less than the length of the connecting end of the brush blade 36. The connecting end of the brush blade 36 is the end connected to the body, and the free end is the end opposite to the connecting end. For a single brush blade 36, when the side brush 3 begins to rotate in the first direction, the second end 362, which is farther from the rotation center of the side brush 3, will be subjected to frictional force from the working surface first, causing it to deform first. Conversely, the first end 361, which is closer to the rotation center of the side brush 3, will deform last. During rotation, the contact area between the second end 362 and the ground is greater than that between the first end 361 and the ground. The relatively larger friction area of ​​the second end 362 facilitates the outward opening of the brush blade 36 from the second end 362, and it can remain open throughout the rotation. During rotation, the interference between the deformed brush blade 36 and the working surface decreases, thus reducing the friction between the brush blade 36 and the working surface. This prevents excessive friction from affecting the smoothness of the side brush 3's rotation. Furthermore, the length of the free end of the brush blade 36 is shorter than the length of the connecting end, which facilitates the deformation and opening of the brush blade 36. The longer connecting end enhances the connection stability between the brush blade 36 and the body, and also enhances the stability of maintaining the open state after the brush blade 36 is opened. If the side of the first end 361 of the brush blade 36 is perpendicular to the bottom surface of the body, the brush blade 36 is prone to wrinkling on one side of the first end 361 under the action of friction, preventing it from fully unfolding. In this embodiment, the side of the first end 361 is set as an inclined edge, thereby increasing the length of the side of the first end 361. The deformation on both sides of the brush blade 36 is balanced, which helps to make the brush blade 36 unfold smoothly.

[0134] In one embodiment of this disclosure, in the non-cleaning state, i.e., when the roller brush 2 and the side brush 3 are not rotating, the brush blade 36 has a certain interference fit with the working surface. When the roller brush 2 is rotating in the cleaning state, the brush blade 36 rotates under the influence of the roller brush 2, and the brush blade 36 opens due to the friction of the working surface, causing the inner surface S2 of the brush blade 36 to contact the ground. The contact area is the open contact area of ​​the interference fit. In one example, the interference fit between the brush blade 36 and the working surface is 1.5-3.5 mm. In the non-cleaning state, the side brush 3 is not rotating, and the interference fit between the brush blade 36 and the working surface may cause irregular bending of the brush blade 36. When the cleaning equipment is in the cleaning state, the roller brush 2 rotates, causing the side brush 3 to rotate. The special structure of the brush blade 36, under the action of rotational centrifugal force and working surface friction, causes the brush blade 36 to... Figure 18 The shape shown is deformed and unfolded.

[0135] Further reference Figure 17The arc-shaped brush 36 unfolds into a trapezoid. The base of the trapezoid is where the brush 36 connects to the body line; the top edge of the trapezoid is the free end face of the brush 36 that contacts the working surface when stationary; the left hypotenuse of the trapezoid is the inclined side of the first end 361 of the brush 36; and the right side of the trapezoid is the side edge of the second end 362 of the brush 36. For example... Figure 17 As shown, the inclined edge of the first end 361 of the brush 36 has an angle α with the end face of the body, and the side edge of the second end 362 of the brush 36 has an angle β with the end face of the body, where α < β ≤ 90°.

[0136] like Figure 17 As shown in Figure ①, the arc-shaped brush blade 36 unfolds into a right-angled trapezoid with β = 90°, and the side of the second end 362 of the brush blade 36 is perpendicular to the end face of the main body. This maximizes the area of ​​the second end 362 of the brush blade 36, thus facilitating the opening of the brush blade 36 from the second end 362. Figure 17 As shown in Figure ②, the side of the second end 362 of the brush blade 36 can also be an inclined edge with a predetermined angle to the end face of the main body, i.e., α < β < 90°. This makes the area of ​​the second end 362 of the brush blade 36 larger than that of the first end 361, which is beneficial for the brush blade 36 to deform and open from the second end 362. During the rotation of the side brush 3, the second end 362 deforms and opens, and contacts the working surface with a larger area, thereby further increasing the friction and thus increasing the deformation, increasing the extent of the brush blade 36's unfolding. Figure 17 The β = 90° scheme shown in Figure ① is the most preferred embodiment of this example. It maximizes the deformation of the brush blade 36 and maximizes the cleaning area after the inner side S2 of the brush blade 36 is in contact with the ground, thereby achieving the best cleaning effect.

[0137] refer to Figure 10 and Figure 13 The first cleaning unit is a roller brush 2, which is a cylindrical structure with its two ends rotatably connected to the floor brush housing 1. Brush bristles 21 can be provided on the outer surface of the roller brush 2. Water can adhere to the bristles 21, and they rotate with the roller brush 2 to clean the work surface. Specifically, the roller brush 2 includes a roller and brush bristles 21, with the brush bristles 21 covering the roller.

[0138] In one embodiment of this disclosure, during the cleaning process, a portion of the brush blades 36 are configured to extend below the roller brush 2, and the bristles 21 on the surface of the roller brush 2 can pre-press a portion of the brush blades 36 onto the working surface during cleaning. This allows the roller brush 2 to clean the brush blades 36, where water or cleaning fluid on the roller brush 2 wets the brush blades 36 and cleans them through friction during rotation. The brush blades 36 remain clean, preventing dirt picked up during cleaning from being carried to other cleaning areas.

[0139] In one embodiment of this disclosure, the main body is configured to contact the sidewall 22 of the roller brush 2. In the cleaning state, the second cleaning unit rotates under the friction of the sidewall 22 of the roller brush 2. Specifically, the sidewall 22 is located on the roller, and the sidewall 22 is the side end face of the roller. The main body of the side brush 3 is configured to contact the sidewall 22 of the roller brush 2. In the cleaning state, the second cleaning unit rotates under the friction of the sidewall 22 of the roller brush 2. The roller brush 2 rotates clockwise to clean the working surface in the cleaning state, as shown in the reference. Figure 10 View direction, the direction of rotation is clockwise (i.e.) Figure 10 (In the direction indicated by the arrow on the middle roller brush 2); Reference Figure 12 View direction, the forward rotation direction is... Figure 12 The arrow on the roller brush 2 indicates the lower part of the roller brush 2. The body of the side brush 3 can maintain contact with the side wall 22 of the roller brush 2. When the roller brush 2 rotates in the forward direction, the side wall 22 will rub against the body of the side brush 3, and the side brush 3 can rotate in the first direction under the action of friction.

[0140] This embodiment achieves the rotation of the side brush 3 by means of the friction between the side wall 22 of the roller brush 2 and the side brush 3, thereby simplifying the rotation drive method of the side brush 3 to the greatest extent. This embodiment does not require additional drive or transmission structures; instead, it can directly drive the side brush 3 through the existing roller brush 2 structure. This solution has a simple structure and saves production costs. The roller brush 2 is the main cleaning unit of the cleaning equipment. Since there is no need to set up an additional drive mechanism for the side brush 3, the roller brush 2 can still maintain its original length, thereby maintaining a sufficiently large cleaning area and not affecting the cleaning efficiency of the cleaning equipment. In one embodiment of this disclosure, the body and the brush blade 36 are made of the same material and are constructed as an integral part of the brush blade 36. Compared to using a rigid material such as hard plastic to make the side brush 3 body, this embodiment uses soft rubber to make the side brush 3 body, thereby allowing it to make soft contact friction with the roller side wall 22, preventing damage caused by mutual hard friction and affecting the service life of the side brush 3 and the roller brush 2; in addition, the body made of soft rubber can generate greater friction during friction, which is beneficial for driving the side brush 3 to rotate. In this embodiment, since the body and the brush blade 36 are made of the same material, the side brush 3 can be produced as a single piece. Compared with the solution of splicing the brush blade 36 onto the body, the connection between the integrally formed brush blade 36 and the body has the greatest strength, is less prone to breakage, and has a long service life.

[0141] In another embodiment of this disclosure, reference is made to Figure 11The outer peripheral surface of the main body is provided with a friction part 37, which is configured to contact the side wall 22 of the roller brush 2 in the cleaning state. As mentioned above, the main body of the side brush 3 may include a mounting base 32, which may be made of a material such as hard plastic. The friction part 37 is wrapped on the outer peripheral surface of the mounting base 32, and the friction part 37 can be used to rub against the side wall 22 of the roller brush 2. The friction part 37 may be made of soft rubber material, so that the friction part 37 makes soft contact friction with the roller side wall 22, preventing damage caused by hard friction; in addition, the friction part 37 made of soft rubber material can generate greater friction force during friction, which is beneficial to driving the side brush 3 to rotate. The outer peripheral surface of the friction part 37 may be configured as an uneven wavy surface, thereby further increasing the friction force. The soft rubber friction part 37 may be integrally formed with the brush blade 36.

[0142] Similar to Embodiment 1, the rotational speed of the second cleaning unit is more than three times that of the first cleaning unit, meaning the rotational speed of the side brush 3 is more than three times that of the roller brush 2. The circumference of the roller is more than three times the circumference of the friction part 37, which means that one rotation of the roller brush 2 can cause the side brush 3 to rotate more than three times, thus making the rotational speed of the side brush 3 more than three times that of the roller brush 2.

[0143] Similar to Embodiment 1, besides using the roller brush 2 to drive the side brush 3 to rotate, the side brush 3 in this embodiment can also employ other driving methods. In one embodiment of this disclosure, the friction part 37 can be similar to the flange 33 in Embodiment 1. Specifically, the friction part 37 is configured to protrude from the outer side of the floor brush housing 1 and is configured to drive the side brush 3 to rotate under the frictional force of the obstacle. The friction part 37 can be a rubber coating provided on the outer peripheral surface of the side brush 3 body, protruding from the outer side of the floor brush housing 1 to generate greater friction with obstacles (e.g., walls, baseboards, furniture sides, etc.). In addition, the friction part 37 can have a certain degree of elasticity, thus also having the functions of preventing scratches and buffering collisions. The friction part 37 can also increase the friction with the obstacle, so that the side brush 3 can rotate under the frictional force of the obstacle. When the cleaning device is cleaning along the edge, the friction part 37 can press against an obstacle, for example, when the cleaning device is cleaning against a wall, the friction part 37 can press against the wall surface; when the user moves the cleaning device back and forth, the friction part 37 drives the side brush 3 to rotate under the friction force of the wall surface.

[0144] Similar to Embodiment 1, the side brush 3 in this embodiment can also be detachably connected to the first arm 5 via a connecting mechanism. The side brush 3 is detachably connected to the bottom of the first arm 5 via the connecting mechanism, allowing the user to disassemble and assemble the side brush 3 to replace the worn side brush 3. In a specific embodiment of this disclosure, refer to... Figures 13 to 16 The connecting mechanism includes a mounting base 32 and a rotating shaft 30, such as Figure 14As shown, the mounting base 32 is mounted on the side brush 3, and the rotating shaft 30 is mounted on the first support arm 5. The rotating shaft 30 has a snap-fit ​​groove 301, and extends into the inner cavity 321 of the mounting base 32, and is configured to engage with the snap-fit ​​groove 301 via a clamp 34. The side brush 3 is detachably connected to the rotating shaft 30 via the clamp 34, allowing the user to easily install and remove the side brush 3 using the clamp 34, thus replacing worn-out side brushes after a period of use.

[0145] The snap-fit ​​groove 301 is an arc-shaped groove provided on the rotating shaft 30. Specifically, the diameter of a small section of the rotating shaft 30 gradually decreases and then gradually increases, thus forming a concave arc surface, which is the snap-fit ​​groove 301. Specifically, for the disassembly process: the user can directly pull the side brush 3 off the rotating shaft 30 with force. As the diameter of the snap-fit ​​groove 301 to the rotating shaft 30 gradually increases, the clamp 34 snapped in the snap-fit ​​groove 301 is stretched open by the force, and the clamp 34 deforms and disengages from the snap-fit ​​groove 301; or, the user can also pull out the clamp 34, so that the clamp 34 disengages from the snap-fit ​​groove 301, thereby removing the side brush 3. Regarding the installation process: Users can pre-install the clamp 34 onto the side brush 3. After aligning the side brush 3 with the rotating shaft 30 (i.e., inserting the rotating shaft 30 into the inner cavity 321 through the hole at the top of the side brush 3), the user can directly apply force to install the side brush 3 onto the rotating shaft 30. During this process, the clamp 34 is stretched and deformed by the rotating shaft 30, and then springs back to its original position at the reduced diameter engagement groove 301, thus engaging with the engagement groove 301. Alternatively, after alignment, the user can insert the clamp 34 into the engagement groove 301 to install the side brush 3 onto the rotating shaft 30. The installed side brush 3 can rotate relative to the rotating shaft 30, thereby cleaning the working surface.

[0146] In one specific embodiment of this disclosure, reference is made to Figure 15 and Figure 16 The mounting base 32 has grooves 322 on opposite sides that penetrate the inner cavity 321. The clamp 34 is configured to be clamped in the grooves 322, and the portion of the clamp 34 protruding from the inner cavity 321 is configured to engage with the snap-fit ​​groove 301. Furthermore, the two free ends of the clamp 34 are configured to be bent inward to form snap-fit ​​members 341. The two snap-fit ​​members 341 are configured to jointly form a clamping structure. The two snap-fit ​​members 341 are clamped in the grooves 322 under elastic force and are configured to extend to engage with the snap-fit ​​groove 301 on the rotating shaft 30.

[0147] A groove 322 penetrating the inner cavity 321 of the mounting base 32 divides the mounting base 32 into a first part 323 and a second part 324. For example... Figure 9As shown, the middle portion of the clamp 34 is held elastically on the first portion 323 of the mounting base 32, that is, within the groove 322. The two free ends of the clamp 34 are bent to form two snap-fit ​​pieces 341, the ends of which abut against the second portion 324. During installation, the rotating shaft 30 is located in the inner cavity 321, and the portion of the clamp 34 protruding from the inner cavity 321 engages with the snap-fit ​​groove 301. Specifically, the two snap-fit ​​pieces 341 extend to engage with the snap-fit ​​groove 301, thereby being held elastically within the snap-fit ​​groove 301, allowing the side brush 3 to be installed onto the rotating shaft 30.

[0148] Application Scenario 1

[0149] In a home cleaning scenario, the cleaning device disclosed herein can be a handheld floor scrubber. The handheld floor scrubber includes a floor brush assembly 200, which comprises a floor brush housing 1, a roller brush 2, and side brushes 3. The roller brush 2 is rotatably connected to the floor brush housing 1, and its rotation axis is parallel to the ground. The floor brush housing 1 has a first arm 5 located on the drive side 11 and a second arm 6 located on the detachment side 12 on opposite sides. The thickness of the first arm 5 and the second arm 6 prevents the roller brush 2 from achieving zero-edge contact in actual cleaning scenarios. The sides of the roller brush 2 will inevitably have a certain distance from walls, furniture edges, and other edges, resulting in cleaning dead zones.

[0150] Because a drive device 4 for rotating the first cleaning unit is provided on the first arm 5, the side gap of the roller brush 2 on the drive side 11 is larger than that on the disassembly side 12. For example, in this application scenario, the roller brush 2 on the drive side 11 has a gap of about 10mm from the side. To solve the problem that the roller brush 2 cannot reach the edge, a side brush 3 is provided on at least the drive side 11 of the floor brush assembly 200. The side brush 3 can at least clean the cleaning dead corners of the drive side 11 of the roller brush 2.

[0151] The side brush 3 and the roller brush 2 can rotate in different directions; for example, their rotation axes can be perpendicular to each other. This allows the roller brush 2 and the side brush 3 to be rotatably connected to the floor brush housing 1 using different connection methods, thus compensating for cleaning blind spots caused by installation issues. The cleaning surface of the side brush 3 is constructed to extend from the cleaning surface of the roller brush 2 to the outside of the floor brush housing 1. This allows the side brush 3 to clean the working surface located from the side of the roller brush 2 to the outside of the floor brush housing 1, expanding the cleaning area and compensating for the cleaning blind spots caused by the installation requirements of the traditional roller brush 2. Consequently, when the cleaning equipment of this disclosure is used for cleaning along walls or other obstacles, the distance from the cleaning unit to the wall or obstacle can be reduced, and the side brush 3 can clean blind spots that the roller brush 2 cannot reach, reducing the omission of dirt in blind spots and improving the user experience.

[0152] Some bristles 31 of the side brush 3 extend to the bottom of the roller brush 2. The roller brush 2 contacts at least part of the side brush 3 on the working surface during the cleaning process, thereby driving the side brush 3 to rotate during rotation. The roller brush 2 can convert the horizontal force into the vertical rotational force of the side brush 3 through friction.

[0153] As the side brush 3 rotates, it pulls the dirt from the roller brush 2 on the working surface in the direction it is moving. The roller brush 2 rotates clockwise to clean the working surface, and the side brush 3 rotates in the first direction under the action of the roller brush 2, bringing the dirt from the working surface to the front of the roller brush 2. The roller brush 2 continues to move forward during the cleaning process, thus cleaning the dirt brought to the front of the roller brush 2 by the side brush 3, allowing for concentrated cleaning of the dirt using the roller brush 2.

[0154] Application Scenario 2

[0155] The outer circumference of the side brush 3 body is provided with a buffer part that protrudes from the outside of the floor brush housing 1. The buffer part has a certain degree of elasticity and can prevent scratches and cushion collisions. In the application scenario of wall cleaning, the buffer part can press against the wall surface and drive the side brush 3 to rotate under the friction force of the wall surface.

[0156] When the user moves the handheld floor scrubber backward from its wall-mounted position, the buffer unit, under the friction of the wall surface, causes the side brush 3 to rotate in the first direction. Simultaneously, since the roller brush 2 always rotates forward, it also causes the side brush 3 to rotate in the first direction due to friction. At this time, the roller brush 2 and the buffer unit provide the same direction of rotational force to the side brush 3. The side brush 3, rotating in the first direction, can carry dirt from the work surface to the front of the roller brush 2. During the cleaning process, the user will repeatedly drag the brush back and forth, allowing the roller brush 2 to move forward during subsequent cleaning, thus cleaning the dirt carried to the front of the roller brush 2 by the side brush 3. This achieves concentrated cleaning of dirt using the roller brush 2.

[0157] When the user moves the handheld floor scrubber forward against the wall, the buffer unit, under the friction of the wall surface, causes the side brush 3 to rotate in the second direction. Simultaneously, since the roller brush 2 always rotates forward, it provides rotational force to the side brush 3 in the first direction. At this point, the rotational forces provided by the roller brush 2 and the buffer unit to the side brush 3 are in opposite directions. Because the force exerted by the wall surface on the side brush 3 is greater than the force exerted by the roller brush 2 on the side brush 3, the side brush 3 will rotate in the second direction, carrying dirt from the work surface to the rear of the roller brush 2. During the cleaning process, the user will repeatedly drag the scrubber back and forth, allowing the roller brush 2 to move backward during subsequent cleaning, thus removing the dirt carried to the rear of the roller brush 2 by the side brush 3. Furthermore, the suction port located at the rear of the roller brush 2 can remove dirt from that area, achieving concentrated cleaning of dirt via the roller brush 2.

[0158] Application Scenario 3

[0159] In a home cleaning scenario, the cleaning device disclosed herein can be a handheld floor scrubber. The handheld floor scrubber includes a floor brush assembly 200, which comprises a floor brush housing 1, a roller brush 2, and side brushes 3. The side brushes 3 and the roller brush 2 can rotate in different directions; for example, their axes of rotation can be perpendicular to each other. This allows the roller brush 2 and the side brush 3 to be rotatably connected to the floor brush housing 1 using different connection methods, thus compensating for cleaning blind spots caused by installation issues.

[0160] The side brush 3 includes a mounting base 32 for detachable connection with the floor brush housing 1, and three brush blades 36 disposed on the lower end face of the mounting base 32. In the cleaning state, the brush blades 36 are configured to deform in a direction away from the center of the body under external force during rotation, thereby cleaning the working surface. Specifically, when the side brush 3 starts to rotate, the part of the brush blade 36 in contact with the working surface will rub against the working surface. Under the action of friction and compression from the working surface, as well as under the action of centrifugal force of rotation, the soft brush blades 36 will deform, and the three brush blades 36 can deform together in the outward direction, that is, open outward. This makes the inner surface S2 of the brush blades 36 fit against the working surface, increasing the contact area between the brush blades 36 and the working surface, and improving the cleaning effect of the brush blades 36 on the working surface.

[0161] In cleaning mode, the brush blade 36 can be retracted to a position beyond the projected area of ​​the floor brush housing 1, allowing it to reach into cleaning blind spots. This enables the side brush 3 to clean the working surface located from the side of the roller brush 2 to the outside of the floor brush housing 1, expanding the cleaning area and compensating for the cleaning blind spots caused by the installation requirements of the traditional roller brush 2. Consequently, when cleaning along walls or other obstacles, the cleaning device of this disclosure can reduce the distance between the cleaning unit and the wall or obstacle, and clean blind spots that the roller brush 2 cannot reach, reducing the omission of dirt in these blind spots and improving the user experience.

[0162] A friction part 37, which can be made of soft rubber, is provided on the outer peripheral surface of the mounting base 32 of the side brush 3. When the roller brush 2 rotates, its sidewall 22 will make soft contact friction with the friction part 37, thereby driving the side brush 3 to rotate through the friction force between the sidewall 22 and the friction part 37. In this way, the rotation driving method of the side brush 3 is simplified to the greatest extent. There is no need to set up other drive structures or transmission structures on the cleaning equipment. Instead, the side brush 3 can be driven to rotate directly through the existing roller brush 2 structure. The structure of this solution is simple and saves production costs. In addition, the friction part 37 made of soft rubber prevents damage caused by hard friction, while also generating greater friction force, which is beneficial for driving the side brush 3 to rotate.

[0163] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that, Includes a floor brush assembly (200), the floor brush assembly (200) comprising: Floor brush housing (1); The first cleaning unit has a first cleaning component; the first cleaning unit is configured to be rotatably connected to the floor brush housing (1) along a first rotation axis so that the first cleaning component cleans the working surface; The second cleaning unit includes a body and a second cleaning component, the second cleaning component being disposed on the bottom end surface of the body; the second cleaning unit is located on at least one side of the first cleaning unit in a direction parallel to the first rotation axis. In a non-cleaning state, the first cleaning unit and the second cleaning unit do not rotate, and the second cleaning component has an interference fit with the working surface; In the cleaning state, the second cleaning component is deformed away from the center of the body by an external force as it rotates with the body, so that the inner side of the second cleaning component facing the center of the body fits against the working surface; the cleaning state is the working state in which the first cleaning unit rotates to clean the working surface.

2. The cleaning equipment according to claim 1, characterized in that, The second cleaning component is at least one brush blade (36) disposed on the body. In the non-cleaning state, the brush blade (36) extends from the body toward the working surface at an angle between 90° and 110°.

3. The cleaning equipment according to claim 1, characterized in that, The second cleaning unit is configured to rotate relative to the working surface about a second rotation axis in a first direction. The second cleaning element is at least one brush blade (36) disposed on the body. The two opposite ends of the brush blade (36) are referred to as the first end (361) and the second end (362). In the first direction, the brush blade (36) is configured to extend from its first end (361) to its second end (362) in a manner that gradually moves away from the rotation center of the second cleaning unit.

4. The cleaning equipment according to claim 2, characterized in that, The brush (36) is constructed in an arc shape, and the brush (36) is connected to the body by a line.

5. The cleaning equipment according to claim 2, characterized in that, The side of the first end (361) of the brush (36) is constructed to gradually slope from the position where it is connected to the body to its end face, such that the length of the free end of the brush (36) is less than the length of the connecting end of the brush (36). The connecting end of the brush (36) is the end of the brush (36) connected to the body, and the free end of the brush (36) is the end opposite to the connecting end.

6. The cleaning equipment according to claim 2, characterized in that, At least two brush blades (36) are provided, and the at least two brush blades (36) have the same shape, so that the cleaning range after the brush blades (36) are deformed is circular.

7. The cleaning equipment according to claim 1, characterized in that, The interference fit between the second cleaning component and the working surface is 1.5-3.5 mm.

8. The cleaning equipment according to claim 1, characterized in that, In the non-cleaning state, the second cleaning component is located within the edge of the body; in the cleaning state, the second cleaning component changes shape to extend beyond the projection area of ​​the floor brush housing (1) on the working surface.

9. The cleaning equipment according to claim 1, characterized in that, The main body is located within the projection area of ​​the brush housing (1) on the working surface.

10. The cleaning equipment according to claim 1, characterized in that, The second cleaning unit is configured to rotate relative to the working surface about a second rotation axis in a first direction, the first rotation axis being perpendicular to the second rotation axis; the first cleaning unit includes a roller and roller bristles (21), the roller bristles (21) covering the roller, the body of the second cleaning unit contacting the side wall (22) of the roller of the first cleaning unit, and in the cleaning state, the second cleaning unit rotates under the friction of the first cleaning unit.

11. The cleaning equipment according to claim 10, characterized in that, The second cleaning unit and the first cleaning unit are configured to be arranged in the direction of the first rotation axis.

12. The cleaning equipment according to claim 1, characterized in that, A first arm (5) located on the drive side (11) and a second arm (6) located on the disassembly side (12) are provided on opposite sides of the floor brush housing (1); the first cleaning unit is configured to be detachably connected to the floor brush housing (1) via the second arm (6); the second cleaning unit is detachably connected to the first arm (5).

13. The cleaning equipment according to claim 1, characterized in that, The second cleaning component is at least one brush blade (36) disposed on the body; the body and the brush blade (36) are made of the same material and are constructed to be integrally formed with the brush blade (36); or, the outer peripheral surface of the body is provided with a friction part (37), and the friction part (37) is integrally formed with the brush blade (36).

14. A cleaning device, characterized in that, Includes a floor brush assembly (200), the floor brush assembly (200) comprising: Floor brush housing (1); The first cleaning unit has a first cleaning component; the first cleaning unit is configured to be rotatably connected to the floor brush housing (1) along a first rotation axis so that the first cleaning component cleans the working surface; The second cleaning unit includes a body and a second cleaning component, the second cleaning component being disposed on the bottom end surface of the body; the second cleaning unit is located on at least one side of the first cleaning unit in a direction parallel to the first rotation axis. In a non-cleaning state, the first cleaning unit and the second cleaning unit do not rotate, and the second cleaning component extends from the body toward the working surface at an angle between 90° and 110°. In the cleaning state, the second cleaning component is deformed away from the center of the body by an external force as it rotates with the body, so that the inner side of the second cleaning component facing the center of the body fits against the working surface; the cleaning state is the working state in which the first cleaning unit rotates to clean the working surface.

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