Floor brush assembly and cleaning equipment

Abstract

The embodiment of the utility model provides a floor brush assembly and cleaning equipment, and relates to the technical field of cleaning equipment. The floor brush assembly comprises a shell, a main rolling brush and first comb teeth. The main rolling brush is rotationally connected into the shell and used for cleaning a to-be-cleaned face. The rear rolling brush is rotationally connected into the shell, and in the radial direction of the main rolling brush, the rear rolling brush is located on the side, away from the advancing direction of the floor brush assembly, of the main rolling brush. The first comb teeth are connected to the shell and located on the outer side of the rear rolling brush in the radial direction. At least part of the structure of the face, facing the rear rolling brush, of the first comb teeth is in interference fit with the rear rolling brush. According to the floor brush assembly provided by the embodiment of the invention, hair and fibers can be effectively prevented from being wound on the rear rolling brush by arranging the first comb teeth, and the problem that long fluff strips or soft rubber strips on the rear side of the floor brush opening of the dust collector easily adhere to hair can be solved.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and more particularly to a floor brush assembly and cleaning equipment. Background Technology

[0002] Vacuum cleaners are typically used to remove dust, debris, hair, and other trash from floors to meet people's daily household cleaning needs. Vacuum cleaners usually include a floor brush, which has an opening at the bottom through which dust, debris, hair, and other trash from the floor are sucked into the dustbin.

[0003] In related technologies, to ensure the sealing of the floor brush opening during vacuum cleaner operation, long-pile strips or soft rubber strips are typically installed on the back side of the floor brush opening. However, due to the presence of these strips, debris behind the floor brush cannot be sucked into the opening when the vacuum cleaner is pulled back. This is especially problematic in households with pets, where there is often a lot of hair, which can stick to the strips, negatively impacting the user experience. Utility Model Content

[0004] This application provides a floor brush assembly and cleaning device to solve the problem that the long bristles or soft rubber strips on the back side of the floor brush opening of the vacuum cleaner in the above-mentioned related technologies are prone to lint sticking.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] A first aspect of this application provides a floor brush component, including:

[0007] case;

[0008] The main roller brush is rotatably connected inside the housing and is used to clean the surface to be cleaned;

[0009] The rear roller brush is rotatably connected inside the housing. In the radial direction of the main roller brush, the rear roller brush is located on the side of the main roller brush away from the forward direction of the floor brush assembly.

[0010] The first comb tooth is connected to the housing and is located on the outer side in the radial direction of the rear roller brush; wherein,

[0011] At least a portion of the structure of the side of the first comb tooth facing the rear roller brush is interference-fitted with the rear roller brush.

[0012] The floor brush assembly provided in this application embodiment, by setting a housing, provides installation positions for the main roller brush and the rear roller brush, ensuring the installation stability of the main roller brush and the rear roller brush. During the cleaning process of the floor brush assembly, the combination of the main roller brush and the rear roller brush, due to the rotational connection between the rear roller brush and the housing, allows dust, debris, hair, and other waste to be drawn into the suction area of ​​the floor brush assembly and sucked away, thereby cleaning the debris on the back side of the floor brush. This prevents the phenomenon of hair easily sticking to the back side of the floor brush assembly. By setting the first comb teeth and interfering with the rear roller brush, hair and fibers can be effectively prevented from getting tangled on the rear roller brush, helping to keep the roller brush clean and operate efficiently, reducing maintenance needs and improving the user experience. Furthermore, this design including the rear roller brush is applicable to various types of floor materials, including carpets, wood floors, and tiles, providing a wide range of applications.

[0013] In one possible implementation, the main roller brush includes a roller brush body and a cleaning section; wherein,

[0014] The cleaning section is located on the outside of the roller brush body, and the roller brush body is rotatably connected to the housing;

[0015] In the radial direction of the main roller brush, the cleaning part includes a first end and a second end, the first end being connected to the roller brush body, and the second end extending away from the roller brush body, and the second end being used to clean the surface to be cleaned;

[0016] The distance from at least part of the first end of the cleaning part to the surface to be cleaned is variable.

[0017] By incorporating both the main brush body and the cleaning section into the main brush assembly, the structural strength of the main brush is increased, the assembly difficulty between the main brush and the housing is reduced, and the connection stability between the main brush and the housing is improved. By making the distance from at least part of the first end of the cleaning section to the surface to be cleaned variable, the cleaning section can be adjusted according to different floor materials or unevenness, thus providing better cleaning results. For uneven floors or carpets of varying thicknesses, this design ensures that the cleaning section always maintains proper contact with the surface, improving cleaning effectiveness. Adjusting the distance between the cleaning section and the surface optimizes the pressure exerted by the cleaning section on the floor, thereby improving cleaning efficiency and helping to remove dirt and debris more effectively. The variable distance design avoids excessive pressure from the cleaning section on the floor, reducing wear on the floor and the cleaning section itself, and helping to extend the lifespan of the brush assembly. Optimizing the contact between the cleaning section and the floor reduces unnecessary friction, thereby reducing the motor load and energy consumption, and improving the overall energy efficiency of the equipment. This design reduces the adjustment needs of users when switching between different floor types, making the equipment easier to use and operate. By precisely adjusting the contact between the cleaning unit and the ground, noise caused by excessive friction can be reduced, improving comfort during use.

[0018] In one possible implementation, the floor brush assembly further includes a detection device and a control device, the detection device being electrically connected to the control device;

[0019] The detection device is used to detect information about the surface to be cleaned, and the control device is used to control the distance from the first end of at least a portion of the cleaning section of the main roller brush to the surface to be cleaned based on the information about the surface to be cleaned.

[0020] This setup allows the detection device to identify information about the surface to be cleaned, such as the type of carpet, hard floor, or tile. The control device automatically adjusts the position or diameter of the main roller brush based on this information, optimizing the cleaning effect. This intelligent function enables the equipment to adapt to various surface types, providing more efficient cleaning. Users no longer need to manually select or adjust cleaning modes; the system automatically identifies the surface type and makes corresponding adjustments. This reduces user steps and improves convenience and efficiency. The automatic adjustment of the distance and pressure between the cleaning head and the surface ensures optimal cleaning results on every surface. This is especially important for removing stubborn dirt and protecting sensitive surfaces. This also provides personalized and efficient cleaning services, increasing user satisfaction. Users can enjoy a more convenient and efficient cleaning experience without worrying about problems caused by improper equipment settings.

[0021] In one possible implementation, the floor brush component further includes a first drive component; wherein,

[0022] The first end of the cleaning section is movably connected to the main body of the roller brush;

[0023] The first drive assembly is disposed inside the main body of the roller brush, and the first drive assembly is drively connected to at least a portion of the cleaning part. The first drive assembly is used to drive at least a portion of the cleaning part to move radially along the main roller brush to change the outer diameter of the main roller brush.

[0024] With the automatic adjustment function of the first drive component, the floor brush assembly can automatically adjust the distance between the cleaning section and the surface to be cleaned according to different types of surfaces and cleaning needs. This reduces the hassle of manual adjustment for users and improves the intelligence of the equipment. By concealing the first drive component inside the main roller brush, the overall structure of the floor brush assembly is kept compact. This reduces the number of external parts of the main roller brush, lowering the complexity of the equipment. The internally located first drive component is protected by the roller brush body, reducing the impact of the external environment, such as dust, moisture, and physical damage, thereby improving the durability and reliability of the first drive component. The internal first drive component is directly connected to the cleaning section, reducing energy loss in the transmission path and improving transmission efficiency. This efficient transmission facilitates faster and more precise adjustment of the cleaning section's expansion. The internal drive design reduces vibration and noise caused by external transmission components, improving the quietness of the equipment during operation.

[0025] In one possible implementation, the main roller brush includes a support member; wherein,

[0026] The support member is movably disposed inside the main body of the roller brush;

[0027] The first end of the cleaning part is connected to the support member;

[0028] The first drive assembly is connected to the support member in a transmission manner, and the first drive assembly is used to drive the support member to move radially along the main roller brush.

[0029] By incorporating a support member and connecting the first end of the cleaning section to it, the support provides a stable connection point, ensuring stability during brush operation and maintaining consistent contact pressure for improved cleaning effectiveness. The transmission connection between the support and the first drive assembly allows for more precise control of the cleaning section's radial expansion and contraction, optimizing contact between the cleaning section and the ground and thus increasing cleaning efficiency. The support member's design helps distribute stress on the cleaning section during operation, reducing wear on the cleaning section and the brush body, thereby extending the equipment's lifespan. The support also acts as a buffer structure, protecting the first drive assembly inside the brush body from external impacts and vibrations, enhancing the equipment's durability and reliability. Furthermore, the support helps to better organize the internal space of the brush body, allowing for a more compact arrangement of the first drive assembly and other internal components, improving the overall design efficiency of the equipment.

[0030] In one possible implementation, the first driving component includes a rotating part and a pushing part; wherein...

[0031] One end of the pushing part is connected to the rotating part for transmission, and the other end is connected to the support member. The rotating part rotates to drive the pushing part to move radially along the main roller brush, thereby driving the support member to move radially along the main roller brush.

[0032] The radial movement of the drive unit, driven by a rotating component, allows for precise adjustment of the main roller brush diameter, optimizing cleaning performance. This design enables automated adjustment of the main roller brush diameter without manual intervention, enhancing the device's intelligence and user convenience. The integration of the rotating and drive units results in a compact structure, reducing the device's size and weight. Stable movement of the support components ensures the roller brush remains balanced and stable during adjustment, preventing vibration or performance degradation caused by uneven adjustment.

[0033] In one possible implementation, the main roller brush further includes an elastic element; wherein,

[0034] In the radial direction of the main roller brush, one end of the elastic element is connected to the cleaning part, and the other end is connected to the roller brush body;

[0035] When the outer diameter of the main roller brush increases from small to large, the elastic element is stretched.

[0036] When the outer diameter of the main roller brush changes from large to small, the restoring force of the elastic element causes the cleaning part to move along the radial direction of the main roller brush toward the inside of the roller brush body.

[0037] By incorporating an elastic element, the cleaning section can be moved inwards from the main brush body as the outer diameter of the main roller brush decreases, thus reducing the outer diameter of the main roller brush. This allows the outer diameter of the main roller brush to be increased or decreased, achieving the purpose of cyclical use. The elastic element absorbs and mitigates vibrations and impacts generated during cleaning, reducing direct impact on the roller brush body and cleaning section, thereby protecting the internal structure of the equipment and extending its service life. Through the action of the elastic element, the cleaning section can evenly distribute pressure under different floor conditions, avoiding excessive localized wear or damage to the floor. This helps to achieve consistent cleaning results on various floor types.

[0038] In one possible implementation, the main roller brush is movably connected to the housing in the direction perpendicular to the surface to be cleaned, and the distance from the central axis of the main roller brush to the surface to be cleaned is variable.

[0039] This design allows the main roller brush to adjust its height according to different floor types and cleaning needs. For thicker carpets, the brush can be lowered to increase contact, while on hard floors it can be raised to reduce friction. Additionally, this allows the first drive assembly that moves the main roller brush to be positioned on the outside of the brush, thus reducing the difficulty of assembling the first drive assembly and consequently lowering costs.

[0040] In one possible implementation, the floor brush assembly further includes a second drive component; wherein,

[0041] The second drive assembly is fixedly connected to the housing, and the second drive assembly is also connected to the main roller brush drive.

[0042] The second drive component is used to drive the main roller brush to move along the vertical direction of the surface to be cleaned, so as to change the distance from the central axis of the main roller brush to the surface to be cleaned.

[0043] In the floor brush assembly provided in this application embodiment, the second drive assembly fixed to the housing can precisely control the vertical movement of the main roller brush. This precision allows the device to adjust the distance between the main roller brush and the ground according to different floor types and cleaning needs to optimize the cleaning effect. The second drive assembly fixed to the housing provides a stable drive base, reducing vibration and noise that may be caused by component movement.

[0044] In one possible implementation, the outer diameter of the main roller brush is larger than the outer diameter of the rear roller brush.

[0045] This design increases the contact area between the main roller brush and the ground, thereby enhancing the cleaning power of the front end and helping to remove large particles of dirt and debris more effectively upon initial contact with the ground. By allowing the main roller brush to handle most of the initial cleaning tasks, the rear roller brush can operate under less pressure, thus reducing resistance and wear and helping to extend the lifespan of the rear roller brush.

[0046] In one possible implementation, the housing includes a receiving cavity for accommodating the main roller brush and the rear roller brush;

[0047] The receiving cavity has an opening on the side facing the surface to be cleaned, and the opening is at least used to allow the main roller brush and the rear roller brush to contact the surface to be cleaned;

[0048] The housing is provided with a dust suction port, which is connected to the receiving cavity and is used to connect with a dust collection component;

[0049] The rear roller brush is positioned on the side of the suction port closest to the surface to be cleaned;

[0050] The first comb teeth include a first tooth portion, a portion of which is located between the rear roller brush and the suction port, and the first tooth portion is located on the side of the suction port closer to the surface to be cleaned;

[0051] At least a portion of the first tooth facing the rear roller brush is interference-fitted with the rear roller brush.

[0052] By incorporating a receiving cavity in the housing, the main and rear roller brushes are provided with a protective space, preventing damage from dust and impurities in the external environment. Openings within the receiving cavity allow the main and rear roller brushes to directly contact the surface to be cleaned, effectively removing dust and debris. The opening design ensures the roller brushes can fully perform their cleaning function. The suction port connects to the receiving cavity, allowing dust and debris generated during cleaning to be quickly carried by airflow into the dust collection component. This design optimizes the airflow path and improves suction efficiency. By enclosing the roller brushes and suction port within the receiving cavity, dust escape during cleaning is effectively reduced, maintaining a clean surrounding environment.

[0053] By interfering with the rear roller brush, the first tooth is designed to loosen dust, debris, and hair that are stuck or tangled on the rear roller brush, preventing hair from getting tangled. Positioning the first tooth between the rear roller brush and the suction port, closer to the surface to be cleaned, reduces the distance between the loosened dust, debris, and hair on the rear roller brush and the suction port. This allows the loosened dust, debris, and hair to be quickly drawn into the suction port, preventing them from falling off or becoming tangled again.

[0054] In one possible implementation, the portion of the first tooth located between the rear roller brush and the suction port has a shape in the axial direction of the rear roller brush that matches the shape of the suction port.

[0055] By matching the shape of the first tooth with the suction port, airflow is ensured to be smoother as it passes through the suction port, reducing airflow resistance. This ensures that dust and debris are effectively guided and captured during cleaning, making it easier for them to be sucked into the suction port and improving suction efficiency. The shape-matching design helps reduce buildup and blockage at the suction port because airflow and particles can pass through more smoothly.

[0056] In one possible implementation, the first comb tooth further includes a second tooth portion; wherein...

[0057] The second tooth is located on the side wall of the opening opposite to the forward direction of the floor brush assembly, and the side of the second tooth facing the surface to be cleaned is flush with the side of the opening facing the surface to be cleaned.

[0058] At least a portion of the second tooth facing the rear roller brush is interference-fitted with the rear roller brush.

[0059] By incorporating a second set of teeth, the combing and loosening capabilities of the first set of teeth are further enhanced, preventing dust, debris, hair, and other contaminants from sticking to or tangling with the rear roller brush, thus preventing hair tangling issues. The design of the second set of teeth being flush with the surface to be cleaned ensures that it does not apply excessive pressure to the floor during cleaning, reducing wear and potential damage.

[0060] In one possible implementation, the floor brush assembly further includes a second comb tooth; wherein,

[0061] The second comb tooth is connected to the housing and located outside the main roller brush. At least a portion of the structure of the side of the second comb tooth facing the main roller brush is interference-fitted with the main roller brush.

[0062] This design prevents dust, debris, hair, and other contaminants from sticking to or tangling on the main roller brush. Through combing action, dust, debris, hair, and other contaminants are more easily sucked into the suction port, reducing common tangling problems during cleaning and improving the user experience. The second comb teeth help maintain the cleaning efficiency of the main roller brush, reducing cleaning time and energy consumption, and improving the overall efficiency of the equipment. The interference fit provides a stable mechanical connection, reducing the possibility of loosening or displacement of the second comb teeth during operation. This stability helps extend the lifespan of the equipment and reduce maintenance requirements.

[0063] In one possible implementation, the floor brush assembly further includes a front roller brush; wherein,

[0064] The front roller brush is rotatably connected to the housing, and in the radial direction of the main roller brush, the front roller brush is located on the side of the main roller brush facing the forward direction of the floor brush assembly.

[0065] By incorporating a front roller brush, the floor brush assembly can include three roller brushes. These three brushes work simultaneously, covering a larger area and increasing contact with dust, hair, and other debris on the surface, thus improving cleaning efficiency. For example, when cleaning long-pile carpets, multiple roller brushes can penetrate deep into the carpet fibers, more effectively combing out hidden dust and hair and sucking them into the suction port, then into the dustbin of the cleaning device. The three roller brushes also better distribute the pressure of the floor brush assembly on the floor. This ensures a more even distribution of contact pressure between the floor brush assembly and the surface to be cleaned. Based on the relationship between pressure and friction (friction equals the coefficient of friction multiplied by pressure), under the same surface and roller brush material (consistent coefficient of friction), the pressure on each roller brush decreases, and the overall friction on the floor brush assembly decreases accordingly. This reduces pushing and pulling force, saves user effort, and improves the user experience.

[0066] In one possible implementation, the floor brush assembly further includes a third comb tooth; wherein,

[0067] The third comb tooth is connected to the housing and located outside the front roller brush. At least a portion of the structure of the side of the third comb tooth facing the front roller brush is interference-fitted with the front roller brush.

[0068] By incorporating a third comb tooth, dust, debris, hair, and other contaminants are prevented from sticking to or tangling on the front roller brush. Through this combing action, dust, debris, hair, and other debris are more easily drawn into the suction port, reducing common tangling problems during cleaning and improving the user experience. The third comb tooth helps maintain the cleaning efficiency of the front roller brush, reducing cleaning time and energy consumption, and improving the overall efficiency of the equipment. The interference fit provides a stable mechanical connection, reducing the possibility of loosening or displacement of the third comb tooth during operation. This stability helps extend the lifespan of the equipment and reduce maintenance requirements.

[0069] In one possible implementation, the floor brush component further includes a third drive component; wherein,

[0070] The third drive component includes a drive motor and a transmission component;

[0071] The drive motor is connected to the main roller brush, the rear roller brush, and the front roller brush through the transmission assembly, and the drive motor drives the main roller brush, the rear roller brush, and the front roller brush together.

[0072] By incorporating a third drive component, which includes a drive motor and transmission assembly, three roller brushes can be driven by a single motor. This reduces the number of motors and associated control circuitry, thereby lowering costs. Reducing the number of motors saves internal space, allowing for a more compact design. This contributes to a smaller overall size and weight, improving portability and user experience. Driving multiple roller brushes simultaneously with a single motor ensures synchronized operation between them. This synchronization helps optimize the cleaning path and effectiveness, preventing interference or incoordination between the roller brushes.

[0073] In one possible implementation, the floor brush component further includes a fourth drive component; wherein,

[0074] The fourth drive assembly is connected to the main roller brush in a transmission manner, and the fourth drive assembly is used to drive the main roller brush to rotate.

[0075] The rear roller brush rotates relative to the housing during operation due to friction with the surface to be cleaned.

[0076] By directly driving the main roller brush to rotate using the fourth drive component, the main roller brush is ensured to contact the ground with a stable speed and force, thereby improving cleaning efficiency. Since the rear roller brush rotates relative to the housing through friction with the surface to be cleaned, this passive rotation method reduces roller brush wear and extends its service life. Furthermore, using friction to drive the rear roller brush reduces the need for a motor, lowering equipment complexity and manufacturing costs. It also reduces the number of parts requiring maintenance, improving equipment reliability and reducing electricity consumption, thus contributing to energy conservation. Additionally, the passive rotation of the rear roller brush reduces operating noise, improving the user experience.

[0077] In one possible implementation, the main roller brush is a stiff fiber brush, and the rear roller brush is a soft fiber brush.

[0078] This design allows the main roller of the stiff-bristled fiber brush to effectively handle stubborn dirt and large debris, making it suitable for cleaning stubborn stains on hard surfaces. The rear roller of the soft-bristled fiber brush is ideal for fine cleaning and polishing, effectively capturing fine dust and particles. The stiff-bristled fiber brush provides powerful cleaning at the beginning, while the soft-bristled fiber brush provides gentler cleaning at the end, reducing abrasion and scratching of the floor surface, making it particularly suitable for cleaning wood floors or other fragile surfaces. This combination design allows the device to perform excellently on a variety of floor types, from hard floors to carpets, providing an effective cleaning solution. The soft-bristled fiber brush produces less noise during cleaning, providing a quieter operating environment after the stiff-bristled brush has finished, improving the user experience. By rationally allocating cleaning tasks, the stiff-bristled and soft-bristled brushes each perform their appropriate cleaning work, reducing excessive wear on any single bristle type and extending the device's lifespan. Users can enjoy both deep cleaning and surface polishing in a single cleaning cycle, reducing cleaning time and steps and improving the overall user experience.

[0079] In one possible implementation, the main roller brush is a stiff fiber brush, while the rear roller brush and the front roller brush are both soft fiber brushes.

[0080] This design allows the soft fibers of the front roller to capture fine dust at the start of cleaning, followed by a deeper clean with the stiffer bristles, and finally, the soft fibers of the rear roller polish and remove any remaining dust. This multi-stage cleaning process improves overall cleaning efficiency. The front roller uses a soft fiber brush that gently contacts the floor, performing excellently for initial cleaning or cleaning relatively smooth surfaces. The main roller in the middle uses a V-shaped stiff fiber brush. This stiff fiber brush, with its V-shaped design and stiff bristles, possesses powerful cleaning capabilities, reaching deep into crevices and corners to effectively remove dirt and becoming the core power source for the entire floor cleaning process. Finally, the rear roller, also made of soft fibers, complements the front roller. After the main roller completes its primary cleaning work, it uses its softness to provide a final, gentle clean, ensuring overall floor cleaning while avoiding any scratches or damage. Additionally, when the floor brush assembly is pulled back, the rear roller generates a squeezing and scraping force. This force is sufficient to loosen large particles, such as pebbles and larger debris, from the surface to be cleaned and to be drawn into the rear roller brush. Moreover, although the soft bristle fibers of the rear roller brush are soft, they also have a certain degree of elasticity and toughness. They are not easily damaged when they come into contact with large particles. Instead, they can use their elasticity to firmly grasp the large particles and lift them off the ground as the rear roller brush rotates, effectively improving the cleaning effect of the floor brush assembly on large particles.

[0081] A second aspect of this application provides a cleaning device, including a device body and a floor brush assembly as described in any of the first aspects above; wherein...

[0082] The floor brush assembly is located at one end of the main body of the device and is rotatably connected to the main body of the device.

[0083] The cleaning equipment provided in this application includes, but is not limited to, vacuum cleaners, robotic vacuum cleaners, carpet cleaners, floor scrubbers, floor polishers, and electric mops. Specifically, by incorporating the brush assembly described in the first aspect, this cleaning equipment allows for the removal of debris from the rear of the brush, preventing hair from easily sticking to the back of the brush assembly. It also effectively prevents hair and fibers from becoming entangled on the rear roller brush, helping to maintain the cleanliness and efficient operation of the roller brush, reducing maintenance needs, and improving the user experience. It is applicable to various types of floor materials, including carpets, wood flooring, and tiles, providing a wide range of applications. Attached Figure Description

[0084] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0085] Figure 1 This is a schematic diagram of the structure of a cleaning device provided in an embodiment of this application;

[0086] Figure 2 This is a schematic diagram of the structure of a floor brush assembly provided in an embodiment of this application;

[0087] Figure 3 This is a schematic diagram of the structure of a floor brush assembly from another angle, provided in an embodiment of this application.

[0088] Figure 4 A cross-sectional structural diagram of a floor brush assembly provided in an embodiment of this application;

[0089] Figure 5 This is a schematic diagram of the housing of a floor brush assembly provided in an embodiment of this application;

[0090] Figure 6 This is a schematic diagram of the structure of the main roller brush of a floor brush assembly provided in an embodiment of this application;

[0091] Figure 7 A cross-sectional structural diagram of the main roller brush of a floor brush assembly provided in an embodiment of this application;

[0092] Figure 8 for Figure 7 A schematic diagram of a structure where the outer diameter of the main roller brush is increased;

[0093] Figure 9 Another cross-sectional schematic diagram of the main roller brush of a floor brush assembly provided in an embodiment of this application;

[0094] Figure 10 This is a partial cross-sectional structural diagram of another floor brush assembly provided in an embodiment of this application;

[0095] Figure 11 for Figure 10 The diagram shows the structure of the floor brush assembly after the main roller brush moves vertically along the surface to be cleaned.

[0096] Explanation of reference numerals in the attached figures:

[0097] 100 - Floor brush assembly; 10 - Housing; 11 - Receiving cavity;

[0098] 12-Opening; 13-Suction port; 20-Main roller brush;

[0099] 21-Roller brush body; 22-Cleaning section; 22a-First end;

[0100] 22b - Second end; 23 - Support member; 24 - Elastic member;

[0101] 30 - Rear roller brush; 40 - First comb tooth; 41 - First tooth section;

[0102] 42 - Second tooth; 50 - Second comb tooth; 60 - Front roller brush;

[0103] 70 - Third comb tooth; 80 - First drive assembly; 81 - Rotating part;

[0104] 811-Arc-shaped groove; 82-Pushing part; 821-Slider;

[0105] 83-Base; 84-First motor; 90-Second drive assembly;

[0106] 200 - Surface to be cleaned; 1000 - Cleaning equipment; 300 - Main body of the equipment;

[0107] 400 - Dust collection components. Detailed Implementation

[0108] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0109] Vacuum cleaners typically include a floor brush with an opening at the bottom to suck dust, debris, hair, and other dirt from the floor into the dustbin. To seal the opening, the back of the floor brush usually has a fixed long-pile or soft rubber strip. However, these fixed strips tend to trap hair during vacuuming, especially when pulling the brush back, particularly when cleaning carpets or pet hair. This necessitates cleaning the floor brush afterward, resulting in a poor user experience.

[0110] To address the aforementioned technical problems, this application provides a floor brush assembly and a cleaning device. The floor brush assembly does not have fixed long-pile strips or soft rubber strips on its rear side. Instead, it uses a rear roller brush, which, during the vacuum cleaner's backward movement, uses the rotational motion of the rear roller brush to draw dust, debris, hair, and other waste into the suction area of ​​the floor brush assembly, improving cleaning efficiency. By providing first comb teeth on the outer side of the rear roller brush, it prevents bristles from getting tangled, thus solving the problem of fixed long-pile strips or soft rubber strips easily attracting hair.

[0111] The following describes in detail the floor brush assembly and cleaning equipment provided in the embodiments of this application with reference to the accompanying drawings.

[0112] The cleaning equipment provided in this application includes, but is not limited to, vacuum cleaners, robot vacuums, carpet cleaners, floor scrubbers, floor scrubbers, electric mops, etc. In this application, the types of cleaning equipment are not further limited.

[0113] The following explanation uses a vacuum cleaner as an example of cleaning equipment.

[0114] It should be noted that, in the embodiments of this application, "forward direction" refers to the natural direction of movement when a user pushes the vacuum cleaner under normal use. When pushing the vacuum cleaner, the user usually focuses on the forward direction in order to complete the cleaning task quickly and efficiently.

[0115] "Backward direction" refers to the direction in which the vacuum cleaner moves backward during cleaning, typically the direction the user pulls the vacuum cleaner. In the backward direction, the vacuum cleaner may retrace the steps of an already cleaned area to ensure thorough cleaning or remove any remaining debris. Users may use the backward direction when they need to adjust their position or re-clean an area.

[0116] Figure 1 This is a schematic diagram of the structure of a cleaning device provided in an embodiment of this application.

[0117] like Figure 1 As shown, the cleaning device 1000 may include a device body 300 and a floor brush assembly 100, wherein the floor brush assembly 100 is disposed at one end of the device body 300 and is rotatably connected to the device body 300. The other end of the device body 300 can be used as a handheld part for user operation, making it convenient for the user to hold.

[0118] For example, the main body 300 of the equipment may be equipped with a motor, fan, suction pipe, circuit board (not shown in the figure) and dust collection component 400, so that the cleaning equipment 1000 can perform cleaning operations.

[0119] By rotating the device body 300 to the floor brush assembly 100, the floor brush assembly 100 can be moved freely in multiple directions, making it easier for the cleaning device 1000 to bypass obstacles and enter confined spaces.

[0120] The structure of the floor brush assembly 100 will be described in detail below with reference to the accompanying drawings.

[0121] Figure 2 This is a schematic diagram of the structure of a floor brush assembly provided in an embodiment of this application. Figure 3 This is a structural schematic diagram of a floor brush assembly provided in an embodiment of this application from another angle.

[0122] It should be noted that, for ease of description, in this embodiment of the application, the thickness direction of the housing 10 component of the floor brush assembly 100 is taken as the z-direction, the axial direction of the roller brush is taken as the y-direction, and the traveling direction of the floor brush assembly 100 is taken as the x-direction. The traveling direction includes the forward direction and the backward direction. In the figure, the positive direction of the x-arrow is the forward direction (referred to as the x-positive direction), and the negative direction of the x-arrow is the backward direction.

[0123] This application provides a floor brush assembly 100 for a vacuum cleaner, such as... Figure 2 and Figure 3As shown, the floor brush assembly 100 may include a housing 10, a main roller brush 20, a rear roller brush 30, and a first comb tooth 40. The main roller brush 20 is rotatably connected to the housing 10 and is used to clean the surface 200 to be cleaned. The rear roller brush 30 is rotatably connected to the housing 10, and in the radial (y-direction) direction of the main roller brush 20, the rear roller brush 30 is located on the side of the main roller brush 20 opposite to the forward direction (positive x-direction) of the floor brush assembly 100. The first comb tooth 40 is connected to the housing 10 and is located on the outer side of the rear roller brush 30 in the radial direction. At least a portion of the structure of the side of the first comb tooth 40 facing the rear roller brush 30 is interference-fitted with the rear roller brush 30.

[0124] It should be noted that "interference fit" refers to a close contact between certain parts of the first comb tooth 40 and the rear roller brush 30. This "close contact" includes, but is not limited to, the top of the first comb tooth 40 adhering to the surface of the rear roller brush 30, or a partial overlap between the top of the first comb tooth 40 and the rear roller brush 30. This adhering may or may not involve a certain amount of pressure. For example, when the surface of the rear roller brush 30 is relatively hard, the top of the first comb tooth 40 adheres to the surface of the rear roller brush 30. When the surface of the rear roller brush 30 is relatively soft (for example, the surface of the rear roller brush 30 has a relatively soft material such as bristles or tufts), the top of the first comb tooth 40 partially overlaps with the rear roller brush 30, meaning that a portion of the structure of the first comb tooth 40 extends into the bristles or tufts of the rear roller brush 30.

[0125] It should be noted that in the embodiments of this application, "orientation" refers to orientation in a broad sense and is not limited to a front-facing arrangement, and "away from" refers to away from in a broad sense and is not limited to a back-to-back parallel arrangement.

[0126] The floor brush assembly 100 provided in this application embodiment provides an installation position for the main roller brush 20 and the rear roller brush 30 by setting the housing 10, thereby ensuring the installation stability of the main roller brush 20 and the rear roller brush 30. During the cleaning process of the floor brush assembly 100, the combination of the main roller brush 20 and the rear roller brush 30 allows the rear roller brush 30 to be rotatably connected to the housing 10, so that dust, debris, hair, and other garbage can be rolled into the suction area of ​​the floor brush assembly 100 through the rotational movement of the rear roller brush 30 and sucked away, thus cleaning the garbage on the back of the floor brush. This prevents the phenomenon of hair easily sticking to the back of the floor brush assembly 100.

[0127] By setting the first comb teeth 40 and interfering with the rear roller brush 30, hair and fibers can be effectively prevented from getting tangled on the rear roller brush 30, helping to keep the roller brush clean and operate efficiently, reducing maintenance needs and improving the user experience. In addition, this design including the rear roller brush 30 is suitable for various types of floor materials, including carpets, wood floors, and tiles, providing a wide range of applications.

[0128] See also Figure 3 As shown, the floor brush assembly 100 also includes a front roller brush 60. The front roller brush 60 is rotatably connected to the housing 10, and in the radial direction of the main roller brush 20, the front roller brush 60 is located on the side of the main roller brush 20 facing the forward direction (positive x direction) of the floor brush assembly 100.

[0129] For example, in the x-direction, the front roller brush 60, the main roller brush 20, and the rear roller brush 30 are arranged side by side and are axially parallel or substantially parallel to each other. The main roller brush 20 is located between the front roller brush 60 and the rear roller brush 30 and is used for the main cleaning work. The housing 10 is located on the side of the front roller brush 60, the main roller brush 20, and the rear roller brush 30 away from the surface 200 to be cleaned. The housing 10 is at least used to protect the front roller brush 60, the main roller brush 20, and the rear roller brush 30.

[0130] By incorporating a front roller brush 60, the floor brush assembly 100 can include three roller brushes. These three brushes work simultaneously, covering a larger area and increasing contact with dust, hair, and other debris on the surface 200, thus improving cleaning efficiency. For example, when cleaning a long-pile carpet, multiple roller brushes can penetrate deep into the carpet fibers, more effectively combing out hidden dust and hair and sucking them into the suction port 13, which then enters the dust box of the cleaning device 1000. The three roller brushes also better distribute the pressure of the floor brush assembly 100 on the floor. This allows the contact pressure between the floor brush assembly 100 and the surface 200 to be cleaned to be more evenly distributed across each brush. Based on the relationship between pressure and friction (friction equals the coefficient of friction multiplied by pressure), under the same surface 200 and brush material (consistent coefficient of friction), the pressure on each brush decreases, and the overall friction on the floor brush assembly 100 decreases accordingly. This reduces pushing and pulling forces, saves user effort, and improves the user experience.

[0131] Figure 4 This is a cross-sectional structural diagram of a floor brush assembly 100 provided in an embodiment of this application.

[0132] In one possible implementation, such as Figure 4 As shown, the housing 10 may include a receiving cavity 11 for accommodating a front roller brush 60, a main roller brush 20, and a rear roller brush 30. The receiving cavity 11 has an opening 12 on the side facing the surface 200 to be cleaned, and the opening 12 is at least used to allow the front roller brush 60, the main roller brush 20, and the rear roller brush 30 to contact the surface 200 to be cleaned.

[0133] It should be noted that because the shape of opening 12 is irregular and difficult to mark, Figure 3 The dashed box in the figure represents the approximate location of the opening 12, and is not intended to limit the location and shape of the opening 12 in the embodiments of this application.

[0134] For example, the housing 10 is provided with a dust suction port 13, which may be located on the inner wall of the receiving cavity 11 and communicate with the receiving cavity 11. The dust suction port 13 is used to connect with the dust collection component 400 (see...). Figure 1 (As shown) is connected. In this way, dirt sucked in through opening 12 can enter the dust collection component 400 through suction port 13 for centralized treatment of dirt.

[0135] In some examples, the dust collection component 400 can be a dust collection box or a dust collection bag, etc. In the embodiments of this application, the specific structure of the dust collection component 400 is not further limited.

[0136] A receiving cavity 11 is provided on the housing 10, offering a protective space for the main roller brush 20 and the rear roller brush 30, preventing dust and impurities from the external environment from damaging these components. An opening 12 within the receiving cavity 11 allows the main roller brush 20 and the rear roller brush 30 to directly contact the surface 200 to be cleaned, effectively removing dust and debris. The design of the opening 12 ensures that the roller brushes can fully perform their cleaning function. A suction port 13 communicates with the receiving cavity 11, allowing dust and debris generated during cleaning to be quickly carried by the airflow into the dust collection component 400. This design optimizes the airflow path and improves suction efficiency. By enclosing the roller brushes and suction port 13 within the receiving cavity 11, dust escape during cleaning is effectively reduced, maintaining a clean surrounding environment.

[0137] In some examples, combined Figure 3 and Figure 4 As shown, the floor brush assembly 100 may further include a second comb tooth 50. The second comb tooth 50 is connected to the housing 10 and is located outside the main roller brush 20. At least a portion of the structure of the side of the second comb tooth 50 facing the main roller brush 20 is interference-fitted with the main roller brush 20.

[0138] For example, in the z-direction, the second comb teeth 50 may be located on the side of the suction port 13 away from the surface 200 to be cleaned, and in the radial direction of the main roller brush 20, the second comb teeth 50 extend toward the main roller brush 20. The shape of the second comb teeth 50 in the y-direction matches the shape of the suction port 13. In other words, the second comb teeth 50, following the shape of the suction port 13, fit snugly at the opening 12 of the suction port 13.

[0139] In one possible implementation, the second comb teeth 50 may include a plurality of comb teeth spaced apart along the axial direction (y direction) of the main roller brush 20 to allow for an interference fit with the main roller brush 20. Of course, in other embodiments, the second comb teeth 50 may have other structures, and in this embodiment, the specific structure of the second comb teeth 50 is not further limited.

[0140] By incorporating a second comb tooth 50 and ensuring that at least a portion of the structure of the side of the second comb tooth 50 facing the main roller brush 20 is interference-fitted with the main roller brush 20, dust, debris, hair, and other contaminants can be prevented from adhering to or tangling on the main roller brush 20. Through this combing action, dust, debris, hair, and other contaminants are more easily drawn into the suction port 13, reducing common tangling problems during cleaning and improving the user experience. The second comb tooth 50 helps maintain the cleaning efficiency of the main roller brush 20, reducing cleaning time and energy consumption, and improving the overall efficiency of the equipment. The interference fit provides a stable mechanical connection, reducing the possibility of loosening or displacement of the second comb tooth 50 during operation. This stability helps extend the lifespan of the equipment and reduce maintenance requirements.

[0141] See also Figure 3 and Figure 4 As shown, the floor brush assembly 100 may further include a third comb tooth 70. The third comb tooth 70 is connected to the housing 10 and is located outside the front roller brush 60, and at least a portion of the side of the third comb tooth 70 facing the front roller brush 60 is interference-fitted with the front roller brush 60.

[0142] For example, the side of the third comb tooth 70 facing the surface 200 to be cleaned is flush with the side of the opening 12 facing the surface 200 to be cleaned. The third comb tooth 70 may include a plurality of comb teeth spaced apart along the axial direction (y direction) of the main roller brush 20 so as to have an interference fit with the front roller brush 60. Of course, in other embodiments, the third comb tooth 70 may also have other structures. In this embodiment, the specific structure of the third comb tooth 70 is not further limited.

[0143] By incorporating the third comb tooth 70, dust, debris, hair, and other contaminants are prevented from adhering to or tangling on the front roller brush 60. Through combing action, dust, debris, hair, and other contaminants are more easily drawn into the suction port 13, reducing common tangling problems during cleaning and improving the user experience. The third comb tooth 70 helps maintain the cleaning efficiency of the front roller brush 60, reducing cleaning time and energy consumption, and improving the overall efficiency of the equipment. The interference fit provides a stable mechanical connection, reducing the possibility of loosening or displacement of the third comb tooth 70 during operation. This stability helps extend the equipment's lifespan and reduce maintenance requirements.

[0144] In one possible implementation, the outer diameter of the main roller brush 20 is larger than the outer diameter of the rear roller brush 30. The outer diameter of the front roller brush 60 may be smaller than the outer diameter of the main roller brush 20. In the embodiments of this application, the relationship between the outer diameters of the front roller brush 60, the main roller brush 20, and the rear roller brush 30 is not further limited.

[0145] It should be noted that the outer diameter refers to the maximum diameter of the main roller brush 20 and the rear roller brush 30.

[0146] This design increases the contact area between the main roller brush 20 and the ground, thereby improving the cleaning ability of the front end and helping to remove large particles of dirt and debris more effectively upon initial contact with the ground. By allowing the main roller brush 20 to undertake most of the initial cleaning tasks, the rear roller brush 30 can operate under less pressure, thus reducing resistance and wear and helping to extend the service life of the rear roller brush 30.

[0147] Combination Figure 4 and Figure 5 As shown, the rear roller brush 30 is disposed on the side of the suction port 13 near the surface 200 to be cleaned. The first comb teeth 40 include a first tooth portion 41, a portion of the first tooth portion 41 is located between the rear roller brush 30 and the suction port 13, and the first tooth portion 41 is located on the side of the suction port 13 near the surface 200 to be cleaned, and at least a portion of the first tooth portion 41 facing the rear roller brush 30 is interference-fitted with the rear roller brush 30.

[0148] By positioning the rear roller brush 30 on the side of the suction port 13 close to the surface 200 to be cleaned, the distance between the rear roller brush 30 and the suction port 13 can be reduced. This allows the rear roller brush 30 to quickly suck up dust, debris, hair, etc., after it picks them up, preventing them from escaping into the receiving cavity 11 and improving suction efficiency.

[0149] By interfering with the first tooth 41 and the rear roller brush 30, dust, debris, and hair stuck or wrapped around the rear roller brush 30 are loosened, preventing the rear roller brush 30 from getting tangled. By positioning the first tooth 41 between the rear roller brush 30 and the suction port 13, and on the side of the suction port 13 closer to the surface to be cleaned 200, the distance between the loose dust, debris, and hair on the rear roller brush 30 and the suction port 13 is reduced. This allows the loosened dust, debris, and hair on the rear roller brush 30 to be quickly sucked into the suction port 13, preventing them from falling off or getting tangled again.

[0150] For example, the first tooth portion 41 includes a plurality of comb teeth arranged along the axial direction (y direction) of the rear roller brush 30, wherein the tooth tips of the comb teeth partially intersect with the rear roller brush 30, that is, the tooth tips of the comb teeth extend into the interior of the rear roller brush 30, which can loosen the dust, debris, and hair stuck or wrapped on the rear roller brush 30 and prevent the rear roller brush 30 from having hair tangling problems.

[0151] In one possible implementation, the portion of the first tooth 41 located between the rear roller brush 30 and the suction port 13 has a shape in the axial direction (y direction) of the rear roller brush 30 that matches the shape of the suction port 13. In other words, the portion of the first tooth 41 located between the rear roller brush 30 and the suction port 13 conforms to the shape of the suction port 13 and fits into the opening 12 of the suction port 13.

[0152] For example, the portion of the first tooth 41 located between the rear roller brush 30 and the suction port 13 can be fixed to the outside of the suction port 13. In the radial direction of the rear roller brush 30, the first tooth 41 extends toward the rear roller brush 30 and is interference-fitted with the rear roller brush 30.

[0153] For example, such as Figure 5 As shown, the shape of the portion of the first tooth 41 located between the rear roller brush 30 and the receiving cavity 11 matches the shape of the cavity wall of the receiving cavity 11. That is, the portion of the first tooth 41 located between the rear roller brush 30 and the receiving cavity 11 is set according to the shape inside the receiving cavity 11 and fits against the cavity wall of the receiving cavity 11.

[0154] For example, a portion of the first tooth 41 located between the rear roller brush 30 and the receiving cavity 11 is fixed to the cavity wall of the receiving cavity 11. In the radial direction of the rear roller brush 30, the first tooth 41 extends toward the rear roller brush 30 and is interference-fitted with the rear roller brush 30.

[0155] By matching the shape of the first tooth 41 with that of the suction port 13, airflow is ensured to be smoother as it passes through the suction port 13, reducing airflow resistance. This ensures that dust and debris are effectively guided and captured during cleaning, making it easier for them to be sucked into the suction port 13 and improving suction efficiency. The shape-matching design helps reduce buildup and blockage at the suction port 13 because airflow and particles can pass through more smoothly.

[0156] See also Figure 4 and Figure 5 As shown, the first comb tooth 40 may further include a second tooth 42. The second tooth 42 is located on the sidewall of the opening 12 opposite to the forward direction of the floor brush assembly 100, and the side of the second tooth 42 facing the surface to be cleaned 200 is flush with the side of the opening 12 facing the surface to be cleaned 200. At least a portion of the second tooth 42 facing the rear roller brush 30 is interference-fitted with the rear roller brush 30.

[0157] For example, the second tooth 42 may include a plurality of comb teeth arranged along the axial direction (y direction) of the rear roller brush 30, wherein the tips of the comb teeth intersect with the rear roller brush 30, that is, the tips of the comb teeth extend into the interior of the rear roller brush 30, which can loosen the dust, debris and hair stuck or wrapped on the rear roller brush 30 and prevent the rear roller brush 30 from getting tangled.

[0158] By incorporating the second tooth 42, the combing and loosening capabilities of the first comb 40 are further enhanced, thereby preventing dust, debris, hair, and other contaminants from sticking to or tangling with the rear roller brush 30, thus preventing the rear roller brush 30 from becoming tangled. The design of the second tooth 42 being flush with the surface to be cleaned 200 ensures that the second tooth 42 does not apply excessive pressure to the ground during cleaning, reducing wear and potential damage to the ground.

[0159] In some embodiments, the first comb tooth 40 may be an integral structure and fixedly connected to the housing 10. The connection method between the first comb tooth 40 and the housing 10 may be snap-fit, adhesive, welding or integral molding. In this embodiment, the connection method between the first comb tooth 40 and the housing 10 is not further limited.

[0160] In one possible implementation, such as Figure 6 As shown, the main roller brush 20 may include a roller brush body 21 and a cleaning section 22. The cleaning section 22 is disposed on the outer side of the roller brush body 21, which is rotatably connected to the housing 10. This allows the main roller brush 20 to rotate relative to the housing 10, thereby performing cleaning operations.

[0161] In one possible implementation, the main roller brush 20 can be a stiff-bristled fiber brush; for example, the cleaning section 22 can be a V-shaped stiff-bristled fiber brush. The rear roller brush 30 and / or the front roller brush 60 can be soft-bristled fiber brushes.

[0162] This setup allows the soft fibers of the front roller brush 60 to capture fine dust at the start of cleaning, followed by a deep clean with stiffer bristles, and finally, the soft fibers of the rear roller brush 30 polish and remove residual dust. This multi-stage cleaning process improves overall cleaning efficiency. The front roller uses a soft fiber brush, which gently contacts the floor, performing excellently in initial cleaning or cleaning relatively smooth surfaces. The central main roller brush 20 can use a V-shaped stiff fiber brush. This stiff fiber brush, with its V-shaped design and stiff bristles, possesses powerful cleaning ability, reaching deep into hard-to-clean areas such as crevices and corners to powerfully remove dirt, becoming the core source of power for the entire floor brush cleaning process, driving the brush to effectively perform the cleaning work. Finally, the rear roller brush 30, also a soft fiber brush, echoes the front roller brush 60. After the main roller brush 20 completes its main cleaning work, it uses its soft properties to perform a final gentle clean, ensuring overall floor cleaning while avoiding any scratches or damage to the floor.

[0163] Furthermore, when the floor brush assembly 100 is pulled back, the rear roller generates a squeezing and scraping force. This force is sufficient to loosen large particles, such as pebbles and larger debris, from the surface 200 to be cleaned and to be caught by the rear roller 30. Moreover, although the soft brush fibers of the rear roller 30 are soft, they have a certain degree of elasticity and toughness. They are not easily damaged when in contact with large particles; instead, they can firmly grasp the large particles with their elasticity and lift them off the ground as the rear roller 30 rotates, effectively improving the cleaning effect of the floor brush assembly 100 on large particles.

[0164] It should be noted that in other embodiments, the main roller brush 20, the front roller brush 60, and the rear roller brush 30 may be other types of roller brushes. In this embodiment, the types of the main roller brush 20, the front roller brush 60, and the rear roller brush 30 are not further limited.

[0165] like Figure 7 As shown, in the radial direction of the main roller brush 20, the cleaning section 22 may include a first end 22a and a second end 22b. The first end 22a is connected to the roller brush body 21, and the second end 22b extends in a direction away from the roller brush body 21, and the second end 22b is used to clean the surface 200 to be cleaned. The distance h from at least a portion of the first end 22a of the cleaning section 22 to the surface 200 to be cleaned is variable.

[0166] It should be noted that "the distance from the first end 22a of at least a portion of the cleaning section 22 to the surface 200 to be cleaned is variable" means that the distance from the first end 22a of at least a portion of the cleaning sections 22 on the outer periphery of the main roller brush 20 to the surface 200 to be cleaned can vary. For example, the outer diameter of the main roller brush 20 can vary. When the outer diameter of the main roller brush 20 increases, in the z-direction, the distance from the first end 22a of the portion of the cleaning section 22 opposite to the surface 200 to be cleaned to the surface 200 to be cleaned decreases, while the distance from the first end 22a of the cleaning sections 22 on both sides in the x-direction to the surface 200 to be cleaned remains unchanged.

[0167] By including a brush body 21 and a cleaning section 22 in the main roller brush 20, the structural strength of the main roller brush 20 can be increased, the assembly difficulty between the main roller brush 20 and the housing 10 can be reduced, and the connection stability between the main roller brush 20 and the housing 10 can be improved. By making the distance from at least part of the first end 22a of the cleaning section 22 to the surface 200 to be cleaned variable, the cleaning section 22 can be adjusted according to different materials or unevenness of the ground, thereby providing a better cleaning effect. For uneven floors or carpets of different thicknesses, this design can ensure that the cleaning section 22 always maintains proper contact with the surface 200 to be cleaned, improving the cleaning effect. By adjusting the distance between the cleaning section 22 and the surface 200 to be cleaned, the pressure of the cleaning section 22 on the ground can be optimized, thereby improving cleaning efficiency and helping to remove dirt and debris more effectively. The variable distance design can avoid the cleaning section 22 applying too much pressure to the ground, thereby reducing wear on the ground and the cleaning section 22 itself, and helping to extend the service life of the floor brush assembly 100. By optimizing the contact between the cleaning unit 22 and the ground, unnecessary friction can be reduced, thereby lowering the motor load and energy consumption, and improving the overall energy efficiency of the equipment. This design reduces the adjustment needs of users when switching between different floor types, making the equipment easier to use and operate. Precise adjustment of the contact between the cleaning unit 22 and the ground reduces noise caused by excessive friction, improving comfort during use.

[0168] In one possible implementation, the floor brush assembly 100 may further include a detection device and a control device (not shown in the figure), with the detection device and control device electrically connected. The detection device is used to detect information about the surface 200 to be cleaned, and the control device is used to control the distance from at least a portion of the cleaning section 22 of the main roller brush 20 to the surface 200 to be cleaned based on the information about the surface 200.

[0169] With this setup, the detection device can identify information about the surface 200 to be cleaned, such as the type of carpet, hard floor, or tile. Based on this information, the control device automatically adjusts the position or diameter of the main roller brush 20 to optimize the cleaning effect. This intelligent function allows the device to adapt to various types of surfaces 200, providing more efficient cleaning. Users no longer need to manually select or adjust the cleaning mode; the system automatically identifies the type of surface 200 and makes corresponding adjustments. This reduces user steps and improves convenience and efficiency.

[0170] The cleaning unit 22 automatically adjusts the distance and pressure between itself and the surface 200 to ensure optimal cleaning results on each surface. This is especially important for removing stubborn dirt and protecting sensitive surfaces. This also provides personalized and efficient cleaning services, enhancing user satisfaction. Users can enjoy a more convenient and efficient cleaning experience without worrying about problems caused by improper equipment settings.

[0171] In one possible implementation, see [link to previous section] Figure 7 As shown, the floor brush assembly 100 may further include a first drive assembly 80. The first end 22a of the cleaning section 22 is movably connected to the roller brush body 21. The first drive assembly 80 is disposed inside the roller brush body 21 and is drively connected to at least a portion of the cleaning section 22. The first drive assembly 80 is used to drive at least a portion of the cleaning section 22 to move radially along the main roller brush 20, thereby changing the outer diameter of the main roller brush 20.

[0172] In one possible implementation, the control device can be electrically connected to the first drive assembly 80. The control device can control the first drive assembly 80 based on information about the surface 200 to be cleaned, thereby changing the distance from the first end 22a of at least a portion of the cleaning section 22 of the main roller brush 20 to the surface 200 to be cleaned.

[0173] Through the automatic adjustment function of the first drive component 80, the floor brush assembly 100 can automatically adjust the distance between the cleaning section 22 and the surface 200 to be cleaned according to different types of surfaces 200 to be cleaned and cleaning needs. This reduces the hassle of manual adjustment for users and improves the intelligence of the equipment. By hiding the first drive component 80 inside the main roller brush 20, it helps to maintain the overall compact structure of the floor brush assembly 100. This reduces the number of external parts of the main roller brush 20 and lowers the complexity of the equipment. The internally located first drive component 80 is protected by the roller brush body 21, reducing the impact of the external environment, such as dust, moisture, and physical damage, thereby improving the durability and reliability of the first drive component 80. The internal first drive component 80 is directly connected to the cleaning section 22, reducing energy loss in the transmission path and improving transmission efficiency. This efficient transmission helps to adjust the expansion of the cleaning section 22 more quickly and accurately. The internal drive design reduces vibration and noise caused by external transmission components, improving the quietness of the equipment during operation.

[0174] In one possible implementation, see [link to previous section] Figure 7As shown, the main roller brush 20 may include a support member 23. The support member 23 is movably disposed inside the roller brush body 21. The first end 22a of the cleaning section 22 is connected to the support member 23. A first drive assembly 80 is drively connected to the support member 23, and the first drive assembly 80 is used to drive the support member 23 to move radially along the main roller brush 20.

[0175] For example, the support member 23 can be a plurality of plate-like structures extending along the axial direction of the main roller brush 20, with the plurality of support members 23 arranged circumferentially along the main roller brush 20, and each support member 23 being connected to the cleaning part 22.

[0176] In one possible implementation, the cleaning section 22 can be a plurality of V-shaped stiff-bristle brushes or straight stiff-bristle brushes. That is, one cleaning section 22 is provided on each support plate, and the distance from the first end 22a of the cleaning section 22 to the surface 200 to be cleaned is changed by driving the support plate.

[0177] Of course, in some embodiments, the cleaning section 22 can be an elastic, soft structure surrounding the outer side of the roller brush body 21. By expanding the support member 23, the size of the cleaning section 22 can be increased, thereby changing the outer diameter of the main roller brush 20. In the embodiments of this application, the structure of the cleaning section 22 and the number of support members 23 are not further limited.

[0178] In some embodiments, the support member 23 may be located inside the roller brush body 21, with the first end 22a of the cleaning part 22 fixedly connected to the support member 23, and the second end 22b passing through the roller brush body 21 and extending to the outside of the roller brush body 21. This arrangement allows the support piece to be hidden inside the roller brush body 21, enhancing aesthetics.

[0179] By providing a support member 23 and connecting the first end 22a of the cleaning section 22 to the support member 23, the support member 23 can provide a stable connection point for the cleaning section 22, ensuring that the cleaning section 22 remains stable during the operation of the roller brush. This helps maintain consistent contact pressure during the cleaning process and improves the cleaning effect. The transmission connection between the support member 23 and the first drive assembly 80 allows for more precise control of the radial expansion and contraction of the cleaning section 22, helping to optimize the contact between the cleaning section 22 and the ground, thereby improving cleaning efficiency.

[0180] The design of the support member 23 helps to distribute the stress on the cleaning section 22 during operation, reducing wear on the cleaning section 22 and the roller brush body 21, thereby extending the service life of the equipment. The support member 23 can also act as a buffer structure, protecting the first drive assembly 80 inside the roller brush body 21 from external impacts and vibrations, improving the durability and reliability of the equipment. The use of the support member 23 helps to better organize the internal spatial layout of the roller brush body 21, allowing the first drive assembly 80 and other internal components to be arranged more compactly, improving the overall design efficiency of the equipment.

[0181] In one possible implementation, the first drive assembly 80 may include a rotating part 81 and a pushing part 82. One end of the pushing part 82 is connected to the rotating part 81, and the other end is connected to the support member 23. The rotating part 81 rotates to drive the pushing part 82 to move radially along the main roller brush 20, thereby causing the support member 23 to move radially along the main roller brush 20.

[0182] Figure 8 This is a schematic diagram showing how the outer diameter of the main roller brush 20 is increased by the first drive component 80. It should be noted that the diagram is for illustrative purposes only and does not constitute a limitation on the specific structure of the main roller brush 20.

[0183] like Figure 8 As shown, the first drive assembly 80 may further include a base 83, on which a guide groove (not marked in the figure) is provided radially along the main roller brush 20, and a pushing part 82 is movably disposed within the guide groove. A rotating part 81 is rotatably connected to the base 83. The rotating part 81 has an eccentrically positioned arc-shaped groove 811, and the pushing part 82 has a slider 821 that cooperates with the arc-shaped groove 811. The slider 821 is movably disposed within the arc-shaped groove 811. When the rotating part 81 rotates, the slider 821 moves within the arc-shaped groove 811. Since the arc-shaped groove 811 is eccentrically positioned and the pushing part 82 can only move radially along the main roller brush 20, it can only move radially along the main roller brush 20 under the pushing force of the arc-shaped groove 811. Because the pushing part 82 is connected to the support member 23, it can drive the support member 23 to move radially along the main roller brush 20, thereby changing the distance h from the first end 22a of the cleaning part 22 to the surface 200 to be cleaned.

[0184] By driving the pusher 82 radially via the rotating part 81, precise adjustment of the diameter of the main roller brush 20 can be achieved, helping to optimize cleaning performance. This design allows for automated adjustment of the main roller brush 20 diameter without manual intervention, thereby improving the intelligence of the equipment and user convenience. The integration of the rotating part 81 and the pusher 82 enables a compact structure, reducing the size and weight of the equipment. The stable movement of the support 23 ensures that the roller brush remains balanced and stable during adjustment, avoiding vibration or performance degradation caused by uneven adjustment.

[0185] It should be noted that the first drive component 80 can be a curved cam expansion plate mechanism in the related art, or it can be other structures. In this embodiment, the specific structure of the first drive component 80 is not further limited.

[0186] In one possible implementation, such as Figure 9 As shown, the main roller brush 20 may also include an elastic element 24. One end of the elastic element 24 is connected to the cleaning section 22, and the other end is connected to the roller brush body 21 in the radial direction of the main roller brush 20. When the outer diameter of the main roller brush 20 increases, the elastic element 24 is stretched. When the outer diameter of the main roller brush 20 decreases, the restoring force of the elastic element 24 causes the cleaning section 22 to move radially towards the inside of the roller brush body 21.

[0187] In addition, the first drive assembly 80 may also include a first motor 84, the output shaft of the first motor 84 being connected to the rotating part 81, and the motor being used to drive the rotating part 81 to rotate.

[0188] It should be noted that, Figure 9 This is for illustrative purposes only and does not constitute a limitation on the specific structure of the main roller brush 20.

[0189] For example, there can be multiple elastic elements 24, which can be spaced apart circumferentially along the main roller brush 20, and multiple elastic elements 24 can also be arranged axially along the main roller brush 20. In this embodiment, the location and number of elastic elements 24 are not further limited.

[0190] For example, the elastic element 24 can be a spring, a sheet, or other structure. In this embodiment, the specific structure of the elastic element 24 is not further limited.

[0191] By incorporating the elastic element 24, the cleaning section 22 can be moved inwards towards the brush body 21 as the outer diameter of the main roller brush 20 decreases, thus reducing the outer diameter of the main roller brush 20. This allows the outer diameter of the main roller brush 20 to be adjusted for both large and small applications, achieving the goal of cyclical use. The elastic element 24 absorbs and mitigates vibrations and impacts generated during cleaning, reducing direct impact on the brush body 21 and the cleaning section 22, thereby protecting the internal structure of the equipment and extending its service life. Through the action of the elastic element 24, the cleaning section 22 can evenly distribute pressure under different floor conditions, avoiding excessive localized wear or damage to the floor. This helps achieve consistent cleaning results across various floor types.

[0192] In one possible implementation, the main roller brush 20 is movably connected to the housing 10 in the vertical direction (z-direction) of the surface to be cleaned 200, and the distance from the central axis of the main roller brush 20 to the surface to be cleaned 200 is variable. That is, the main roller brush 20 can move up and down relative to the housing 10 in the z-direction, thereby changing the distance from the second end 22b of the cleaning section 22 to the surface to be cleaned 200.

[0193] This configuration allows the main roller brush 20 to adjust its height according to different floor types and cleaning needs. For thicker carpets, the brush can be lowered to increase contact, while on hard floors it can be raised to reduce friction. Additionally, this allows the first drive assembly 80, which drives the main roller brush 20, to be positioned on the outside of the main roller brush 20, thereby reducing the assembly difficulty of the first drive assembly 80 and consequently lowering costs.

[0194] In other embodiments, such as Figure 10 As shown, the floor brush assembly 100 also includes a second drive assembly 90 (not shown in the figure). The second drive assembly 90 is fixedly connected to the housing 10 and is also drively connected to the main roller brush 20. The second drive assembly 90 is used to drive the main roller brush 20 to move along the vertical direction of the surface 200 to be cleaned, thereby changing the distance from the central axis of the main roller brush 20 to the surface 200 to be cleaned. Figure 11 This is a schematic diagram showing the structure of the main roller brush 20 after it moves vertically along the surface 200 to be cleaned. It should be noted that... Figure 10 and Figure 11 This is merely a schematic diagram illustrating the movement method and does not constitute a limitation on the specific structure of the second driving component 90 in the embodiments of this application.

[0195] For example, the second drive component 90 can be a lifting mechanism that controls the main roller brush 20 to move up and down relative to the housing 10 in the z-direction, thereby adjusting the distance between the main roller brush 20 and the surface 200 to be cleaned. This allows the main roller brush 20 to adapt to different surfaces 200 to be cleaned, such as hard floors and carpets.

[0196] It should be noted that the second drive component 90 can be a lifting mechanism in related technologies, such as a pneumatic or hydraulic system, a screw lifting mechanism, an electric motor drive, an electronic control system, etc. In the embodiments of this application, the specific structure of the second drive component 90 is not further limited.

[0197] In the floor brush assembly 100 provided in this application embodiment, the second drive assembly 90 fixed to the housing 10 can precisely control the vertical movement of the main roller brush 20. This precision allows the device to adjust the distance between the main roller brush 20 and the ground according to different floor types and cleaning needs to optimize the cleaning effect. The second drive assembly 90 fixed to the housing 10 provides a stable drive base, reducing vibration and noise that may be caused by component movement.

[0198] It should be noted that in some embodiments, the main roller brush 20 can be fixed in the z-direction, and the distance from the second end 22b of the cleaning portion 22 on the main roller brush 20 to the surface 200 to be cleaned can be changed by changing its outer diameter. In other embodiments, the main roller brush 20 can move up and down in the z-direction, but its outer diameter cannot be changed; the distance from the second end 22b of the cleaning portion 22 on the main roller brush 20 to the surface 200 to be cleaned is changed only by changing the distance from the central axis of the main roller brush 20 to the surface 200 to be cleaned. In still other embodiments, the main roller brush 20 can move up and down in the z-direction, and its outer diameter can also change. The distance from the second end 22b of the cleaning portion 22 on the main roller brush 20 to the surface 200 to be cleaned can be changed by changing the distance from the central axis of the main roller brush 20 to the surface 200 to be cleaned, and / or by changing its outer diameter.

[0199] Of course, the type of drive component required varies depending on the method of changing the distance from the second end 22b of the cleaning part 22 on the main roller brush 20 to the surface 200 to be cleaned. The specific method can be set as needed. In this embodiment, the method of changing the distance from the second end 22b of the cleaning part 22 on the main roller brush 20 to the surface 200 to be cleaned and the structure of the corresponding drive component are not further limited.

[0200] In some embodiments, the floor brush assembly 100 may further include a third drive assembly (not shown in the figure). The third drive assembly may include a drive motor and a transmission assembly. The drive motor is connected to the main roller brush 20, the rear roller brush 30, and the front roller brush 60 via the transmission assembly, and the drive motor collectively drives the main roller brush 20, the rear roller brush 30, and the front roller brush 60.

[0201] By incorporating a third drive component, which includes a drive motor and transmission assembly, three roller brushes can be driven by a single motor. This reduces the number of motors and associated control circuitry, thereby lowering costs. Reducing the number of motors saves internal space, allowing for a more compact design. This contributes to a smaller overall size and weight, improving portability and user experience. Driving multiple roller brushes simultaneously with a single motor ensures synchronized operation between them. This synchronization helps optimize the cleaning path and effectiveness, preventing interference or incoordination between the roller brushes.

[0202] In other embodiments, the front roller brush 60, the main roller brush 20, and the rear roller brush 30 can also be driven by other driving methods. For example, the floor brush assembly 100 may also include a fourth driving assembly. This fourth driving assembly is driveably connected to the main roller brush 20 and is used to drive the main roller brush 20 to rotate. When the front roller brush 60 and / or the rear roller brush 30 are in operation, they rotate relative to the housing 10 through friction with the surface 200 to be cleaned.

[0203] By directly driving the main roller brush 20 to rotate using the fourth drive component, the main roller brush 20 is ensured to contact the ground with a stable speed and force, thereby improving cleaning efficiency. Since the rear roller brush 30 rotates relative to the housing 10 through friction with the surface to be cleaned 200, this passive rotation method reduces roller brush wear and extends its service life. Furthermore, using friction to drive the rear roller brush 30 reduces the need for a motor, lowering equipment complexity and manufacturing costs, reducing the number of parts requiring maintenance, improving equipment reliability, and reducing electricity consumption, thus contributing to energy conservation. Additionally, the passive rotation of the rear roller brush 30 reduces noise during equipment operation, improving the user experience.

[0204] Of course, in other embodiments, the front roller brush 60, the main roller brush 20, and the rear roller brush 30 can also be driven by other driving methods. In the embodiments of this application, the driving method of the front roller brush 60, the main roller brush 20, and the rear roller brush 30 is not further limited.

[0205] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0206] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0207] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0208] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0209] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A floor brush assembly, characterized in that, include: case; The main roller brush is rotatably connected inside the housing and is used to clean the surface to be cleaned; The rear roller brush is rotatably connected inside the housing. In the radial direction of the main roller brush, the rear roller brush is located on the side of the main roller brush away from the forward direction of the floor brush assembly. The first comb tooth is connected to the housing and is located on the outer side in the radial direction of the rear roller brush; wherein, At least a portion of the structure of the side of the first comb tooth facing the rear roller brush is interference-fitted with the rear roller brush.

2. The floor brush assembly according to claim 1, characterized in that, The main roller brush includes a roller brush body and a cleaning section; wherein... The cleaning section is located on the outside of the roller brush body, and the roller brush body is rotatably connected to the housing; In the radial direction of the main roller brush, the cleaning part includes a first end and a second end, the first end being connected to the roller brush body, and the second end extending away from the roller brush body, and the second end being used to clean the surface to be cleaned; The distance from at least part of the first end of the cleaning part to the surface to be cleaned is variable.

3. The floor brush assembly according to claim 2, characterized in that, It also includes a detection device and a control device, wherein the detection device is electrically connected to the control device; The detection device is used to detect information about the surface to be cleaned, and the control device is used to control the distance from the first end of at least a portion of the cleaning section of the main roller brush to the surface to be cleaned based on the information about the surface to be cleaned.

4. The floor brush assembly according to claim 2 or 3, characterized in that, It also includes a first driving component; wherein, The first end of the cleaning section is movably connected to the main body of the roller brush; The first drive assembly is disposed inside the main body of the roller brush, and the first drive assembly is drively connected to at least a portion of the cleaning part. The first drive assembly is used to drive at least a portion of the cleaning part to move radially along the main roller brush to change the outer diameter of the main roller brush.

5. The floor brush assembly according to claim 4, characterized in that, The main roller brush includes a support member; wherein... The support member is movably disposed inside the main body of the roller brush; The first end of the cleaning part is connected to the support member; The first drive assembly is connected to the support member in a transmission manner, and the first drive assembly is used to drive the support member to move radially along the main roller brush.

6. The floor brush assembly according to claim 5, characterized in that, The first driving component includes a rotating part and a pushing part; wherein, One end of the pushing part is connected to the rotating part for transmission, and the other end is connected to the support member. The rotating part rotates to drive the pushing part to move radially along the main roller brush, thereby driving the support member to move radially along the main roller brush.

7. The floor brush assembly according to claim 2 or 3, characterized in that, The main roller brush also includes an elastic element; wherein... In the radial direction of the main roller brush, one end of the elastic element is connected to the cleaning part, and the other end is connected to the roller brush body; When the outer diameter of the main roller brush increases from small to large, the elastic element is stretched. When the outer diameter of the main roller brush changes from large to small, the restoring force of the elastic element causes the cleaning part to move along the radial direction of the main roller brush toward the inside of the roller brush body.

8. The floor brush assembly according to claim 2 or 3, characterized in that, In the vertical direction of the surface to be cleaned, the main roller brush is movably connected to the housing, and the distance from the central axis of the main roller brush to the surface to be cleaned is variable.

9. The floor brush assembly according to claim 8, characterized in that, It also includes a second drive component; wherein, The second drive assembly is fixedly connected to the housing, and the second drive assembly is also connected to the main roller brush drive. The second drive component is used to drive the main roller brush to move along the vertical direction of the surface to be cleaned, so as to change the distance from the central axis of the main roller brush to the surface to be cleaned.

10. The floor brush assembly according to any one of claims 1-3, characterized in that, The housing includes a receiving cavity for accommodating the main roller brush and the rear roller brush; The receiving cavity has an opening on the side facing the surface to be cleaned, and the opening is at least used to allow the main roller brush and the rear roller brush to contact the surface to be cleaned; The housing is provided with a dust suction port, which is connected to the receiving cavity and is used to connect with a dust collection component; The rear roller brush is positioned on the side of the suction port closest to the surface to be cleaned; The first comb teeth include a first tooth portion, a portion of which is located between the rear roller brush and the suction port, and the first tooth portion is located on the side of the suction port closer to the surface to be cleaned; At least a portion of the first tooth facing the rear roller brush is interference-fitted with the rear roller brush.

11. The floor brush assembly according to claim 10, characterized in that, The portion of the first tooth located between the rear roller brush and the suction port has a shape in the axial direction of the rear roller brush that matches the shape of the suction port.

12. The floor brush assembly according to claim 10, characterized in that, The first comb tooth further includes a second tooth portion; wherein, The second tooth is located on the side wall of the opening opposite to the forward direction of the floor brush assembly, and the side of the second tooth facing the surface to be cleaned is flush with the side of the opening facing the surface to be cleaned. At least a portion of the second tooth facing the rear roller brush is interference-fitted with the rear roller brush.

13. The floor brush assembly according to any one of claims 1-3, characterized in that, It also includes a second comb tooth; among which, The second comb tooth is connected to the housing and located outside the main roller brush. At least a portion of the structure of the side of the second comb tooth facing the main roller brush is interference-fitted with the main roller brush.

14. The floor brush assembly according to any one of claims 1-3, characterized in that, It also includes a front roller brush; among which, The front roller brush is rotatably connected to the housing, and in the radial direction of the main roller brush, the front roller brush is located on the side of the main roller brush facing the forward direction of the floor brush assembly.

15. The floor brush assembly according to claim 14, characterized in that, It also includes the third comb tooth; among which, The third comb tooth is connected to the housing and located outside the front roller brush. At least a portion of the structure of the side of the third comb tooth facing the front roller brush is interference-fitted with the front roller brush.

16. The floor brush assembly according to claim 15, characterized in that, It also includes a third driving component; among which, The third drive component includes a drive motor and a transmission component; The drive motor is connected to the main roller brush, the rear roller brush, and the front roller brush through the transmission assembly, and the drive motor drives the main roller brush, the rear roller brush, and the front roller brush together.

17. The floor brush assembly according to any one of claims 1-3, characterized in that, It also includes a fourth drive component; among which, The fourth drive assembly is connected to the main roller brush in a transmission manner, and the fourth drive assembly is used to drive the main roller brush to rotate. The rear roller brush rotates relative to the housing during operation due to friction with the surface to be cleaned.

18. A cleaning device, characterized in that, Includes the main body of the device and the floor brush assembly as described in any one of claims 1-17; wherein, The floor brush assembly is located at one end of the main body of the device and is rotatably connected to the main body of the device.

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