A floor brush assembly and a vacuum cleaner

Abstract

This application discloses a floor brush assembly and a vacuum cleaner. The floor brush assembly includes a suction port, an air outlet, an air inlet channel, and an air outlet channel. The suction port and the air inlet channel are connected to draw in airflow. A valve assembly is installed on the air outlet channel. When the floor brush assembly is in contact with the surface to be cleaned, the valve assembly connects the air outlet channel to the air outlet, and the gas in the air outlet channel is discharged through the air outlet. When the floor brush assembly is detached from the surface to be cleaned, the valve assembly connects the air outlet channel to a first exhaust port, and the gas in the air outlet channel is discharged to the air inlet channel. The valve assembly can automatically adjust according to the contact state between the floor brush assembly and the surface to be cleaned, so that the air outlet channel switches between connecting the air outlet and the air inlet channel, reducing the idling loss of the motor caused by negative pressure, and preventing dusty air from being directly discharged into the environment.

Description

Technical Field

[0001] This application relates to the field of cleaning device technology, and more specifically to a floor brush assembly and a vacuum cleaner. Background Technology

[0002] The floor brush assembly is a crucial component of a vacuum cleaner, directly impacting its cleaning effectiveness and user experience. The floor brush assembly primarily works by moving across the surface to be cleaned. In traditional vacuum cleaners, the dust-laden air drawn in by the floor brush assembly relies mainly on a simple dust cup or filter for filtration. However, this filtration method has limited effectiveness against fine dust and particles, and much of the filtered air is directly expelled from the device. This leads to incompletely filtered dust or particles re-entering the environment, causing secondary pollution and affecting the vacuum cleaner's cleaning efficiency. Some vacuum cleaners employ innovative designs, placing the exhaust port on the floor brush assembly. The air expelled from the exhaust port can be re-drawn into the device through the suction port on the floor brush assembly, thus re-filtering the exhaust air and effectively improving cleaning efficiency while reducing dust and particle emissions. However, in actual use, the floor brush assembly does not always remain in contact with the surface being cleaned when the user operates the vacuum cleaner. For example, during cleaning, the user may lift the vacuum cleaner to turn or cross obstacles, at which point the floor brush assembly may detach from the surface. In this situation, the exhaust gas will directly enter the air and is difficult to be recovered by the air intake on the brush assembly, resulting in unfiltered gas being directly emitted into the environment, causing pollution. On the other hand, when the vacuum cleaner is working normally, the brush assembly is in close contact with the surface to be cleaned, and the motor generates negative pressure airflow, sucking dust and debris into the vacuum cleaner. When the user lifts the brush assembly, the sealed space formed by its contact with the floor is broken, but the motor continues to run, and the negative pressure inside does not immediately disappear. Because the air intake of the brush assembly is directly connected to the outside air, outside air will enter the motor through the intake, and the negative pressure inside the motor will continue to draw in air. At this time, the motor is in a relatively "idling" negative pressure state, which increases the motor's energy consumption. Furthermore, the large amount of air drawn into the motor may cause the internal temperature to rise, affecting the motor's lifespan. Therefore, there is an urgent need for a brush assembly that can automatically adjust the exhaust based on usage conditions. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a floor brush assembly and a vacuum cleaner. The floor brush assembly is provided with a valve assembly on the air outlet channel. The valve assembly can automatically adjust according to the contact state between the floor brush assembly and the surface to be cleaned, so that the air outlet channel switches between the air outlet and the air inlet channel, reducing the idling loss of the motor caused by negative pressure, and preventing dusty air from being directly discharged into the environment.

[0004] This application provides a floor brush assembly, including a suction port, an air outlet, an air inlet channel, and an air outlet channel. The suction port and the air inlet channel are connected to draw in airflow. A valve assembly is installed on the air outlet channel. When the floor brush assembly is in contact with the surface to be cleaned, the valve assembly connects the air outlet channel with the air outlet, and the gas in the air outlet channel is discharged through the air outlet. When the floor brush assembly is detached from the surface to be cleaned, the valve assembly connects the air outlet channel with a first exhaust port, and the gas in the air outlet channel is discharged to the air inlet channel.

[0005] In this technical solution, the vacuum cleaner includes a floor brush assembly and a main unit connected to the floor brush assembly. The main unit contains a motor unit connected to the floor brush assembly. The motor unit creates negative pressure, allowing the suction port to draw in dust-laden gas. The suction port is connected to an air inlet channel, drawing in dusty air from the environment. The gas in the air inlet channel is then transported to the main unit of the vacuum cleaner by the negative pressure from the motor unit. An air outlet channel is connected to an air outlet, allowing the gas discharged from the main unit to be discharged through the air outlet. At this point, the gas discharged from the outlet can be re-drawn into the device by the suction port on the floor brush assembly for filtration, effectively reducing dust and particulate emissions, improving cleaning efficiency and environmental performance. Furthermore, the airflow within the floor brush assembly has a clear flow path, effectively guiding the flow of dust and air, improving suction efficiency. A valve assembly is installed on the air outlet channel. This valve assembly automatically adjusts the airflow discharge path according to the contact state between the floor brush assembly and the surface to be cleaned. When the vacuum cleaner is lowered, this... When the vacuum cleaner is lifted, the floor brush assembly adheres to the surface to be cleaned, and the valve assembly connects the air outlet to the air duct. Air enters from the suction port, passes through the air inlet channel, the motor unit of the main unit, and the air outlet channel, and finally exits from the air outlet. When the vacuum cleaner is lifted, the floor brush assembly detaches from the surface to be cleaned, and the valve assembly connects the air outlet channel to the air inlet channel. Under the action of the motor unit, the air inlet channel can draw in the air from the air outlet channel. The airflow path changes to enter from the suction port, pass through the air inlet channel, the motor unit of the main unit, and the air outlet channel, and then return to the air inlet channel through the air outlet channel for secondary filtration. At this time, an internal air circulation is formed inside the vacuum cleaner, which helps maintain the airflow balance inside the motor unit, prevents the motor from running dry under negative pressure, thereby reducing energy consumption, extending the motor's service life, and preventing incompletely filtered air from being emitted into the environment, preventing secondary pollution and protecting the environment. This floor brush assembly can automatically adjust the airflow path according to the lifting and lowering usage status, without the need for manual operation by the user, making it more convenient to use.

[0006] As an improvement, the valve assembly includes a valve body and a valve seat. The valve body is engaged and connected to the air inlet channel. The valve body and the valve seat are movably connected. The valve body and the valve seat are separated vertically to connect the air outlet channel and the air inlet channel. The valve body and the valve seat are engaged vertically to connect the air outlet channel and the air outlet. In this technical solution, the valve assembly mainly consists of two parts: a valve body and a valve seat. When the ground brush assembly is in contact with the surface to be cleaned, the valve body and the valve seat are engaged vertically to connect the air outlet channel and the air outlet, allowing the gas in the air outlet channel to be discharged from the air outlet. When the ground brush assembly is detached from the surface to be cleaned, the valve body and the valve seat are separated vertically to connect the air outlet channel and the air inlet channel, allowing the gas in the air outlet channel to enter the air inlet channel for circulation and filtration. The valve body and valve seat have a simple structure and ingenious design, reducing the risk of failure caused by complex structures and improving operational reliability.

[0007] As an improvement, the valve assembly includes a linkage member that passes through the air outlet channel and connects to a valve seat. The valve seat abuts against the surface to be cleaned via the linkage member to engage with the valve body, and the valve seat disengages from the surface to be cleaned via the linkage member to disengage from the valve body. In this technical solution, the linkage passes through the air outlet channel and connects to the valve seat, playing a role in transmitting force and movement. When the vacuum cleaner is lowered, the floor brush assembly adheres to the surface to be cleaned, and the linkage transmits the pressure between the floor brush assembly and the ground to the valve seat, causing the valve seat to engage with the valve body, thereby connecting the air outlet channel and the air outlet, ensuring that the gas in the air outlet channel is discharged from the air outlet. When the vacuum cleaner is lifted, the floor brush assembly disengages from the surface to be cleaned, and the linkage is no longer subjected to pressure from the ground. The valve seat disengages from the valve body under its own gravity or other reset device, connecting the air outlet channel and the air inlet channel. The gas in the air outlet channel can enter the air inlet channel for re-filtration. No additional sensors or complex electronic control systems are required; the switching and connection of the air outlet channel can be achieved solely through the interaction of mechanical structures, reducing production costs and system complexity while improving operational reliability and stability.

[0008] As an improvement, the valve seat is connected to an elastic element. When the floor brush assembly detaches from the surface to be cleaned, the valve seat moves under the action of the elastic element to detach from the valve body. In this technical solution, the elastic force of the elastic element can quickly push the valve seat to displace in the vertical direction. The setting of the elastic element allows the valve seat to detach from the valve body when the vacuum cleaner floor brush assembly detaches from the surface to be cleaned, eliminating the need for an additional power source or complex control mechanism, simplifying the structure, and preventing the valve seat from being unable to automatically detach from the valve body by gravity due to negative pressure, thus improving the reliability of the valve assembly.

[0009] As an improvement, a first traveling wheel is rotatably mounted on the bottom of the linkage component. The linkage component contacts or disengages from the surface to be cleaned via the first traveling wheel. In this technical solution, the first traveling wheel and the linkage component form a mechanical linkage structure. The movement state of the floor brush assembly in contact with or out of the ground is transmitted to the linkage component through the first traveling wheel, thereby affecting the working state of the entire valve assembly. The contact between the first traveling wheel and the ground provides stable support, ensuring the normal operation of the valve assembly. On the other hand, the design of the first traveling wheel allows the vacuum cleaner to move more smoothly on the surface to be cleaned during the cleaning process, reducing the friction between the floor brush assembly and the ground, making it easier and more comfortable to push the vacuum cleaner, reducing operating resistance, and improving the comfort of the cleaning process.

[0010] As an improvement, the bottom of the floor brush assembly is equipped with a second and a third traveling wheel, with the first traveling wheel located between the second and third traveling wheels; at least two of each of the first, second, and third traveling wheels are provided. In this technical solution, the second and third traveling wheels are respectively arranged on both sides of the first traveling wheel, optimizing the center of gravity distribution of the floor brush assembly and further improving its flexibility and adaptability in different cleaning scenarios. The first traveling wheel can move vertically, and its location between the second and third traveling wheels avoids affecting the movement of the floor brush assembly, resulting in better balance of the floor brush assembly. The presence of at least two of each of the first, second, and third traveling wheels allows for the distribution of the weight of the floor brush assembly, reducing the load on individual traveling wheels and thus reducing friction between the traveling wheels and the ground. This makes the vacuum cleaner move more easily and freely during cleaning, especially when crossing obstacles or turning, further improving the versatility and adaptability of the floor brush assembly.

[0011] As an improvement, an installation part is provided within the air outlet channel, the valve body is limited and installed within the installation part, and the valve seat is slidably installed within the installation part. In this technical solution, the installation part provides a stable and precise installation position for the valve assembly. The valve body is restricted and installed within the installation part. This limiting installation method can employ threaded connections, snap-fit ​​fixing, or other mechanical fixing methods to ensure that the valve body remains engaged with the air inlet channel during operation, preventing gas leakage within the air inlet channel. The sliding installation method of the valve seat, combined with the precise guidance of the installation part, enables the valve seat to accurately mate or separate from the valve body in the vertical direction, effectively improving the valve's sealing performance and control accuracy.

[0012] As an improvement, the mounting part is provided with a mounting hole for the linkage component to pass through, and a first sealing element is provided between the mounting hole and the linkage component. In this technical solution, a mounting hole for the linkage component to pass through is specially provided on the mounting part, so that the linkage component can be installed accurately and stably. The first sealing element effectively prevents gas leakage from the gap between the mounting hole and the linkage component, ensuring that the gas in the air outlet channel flows along a predetermined path. The sealing element not only plays a sealing role, but also fixes the position of the linkage component to a certain extent, reducing its shaking and displacement in the mounting hole.

[0013] As an improvement, the mounting part is provided with a limiting protrusion adapted to the valve body, and the valve body is installed in the mounting part through the limiting protrusion. In this technical solution, the limiting protrusion on the mounting part matches the shape and size of the valve body. The valve body can be accurately embedded in the position and range defined by the limiting protrusion. Through the tight fit with the limiting protrusion, the valve body is stably installed in the mounting part. The valve body is not prone to shaking, displacement or loosening during operation, which improves the sealing performance and working stability of the valve assembly and avoids problems such as gas leakage or valve malfunction caused by inaccurate valve body installation.

[0014] As an improvement, a second sealing element is installed on the valve body to connect with the air inlet channel, and a third sealing element is provided between the valve body and the valve seat. In this technical solution, the second sealing element installed on the valve body is used to seal the connection of the air inlet channel. When the valve body is engaged with the air inlet channel, the second sealing element fits tightly against the connection between the air inlet channel and the air outlet channel, forming a sealing barrier. The third sealing element is provided between the valve body and the valve seat. When the valve body and the valve seat are engaged in the vertical direction, the third sealing element is used to fill the small gap between them, preventing gas from leaking between the valve body and the valve seat. The double sealing design of the second and third sealing elements effectively enhances the sealing effect between the air outlet channel and the air inlet channel, as well as between the valve body and the valve seat, ensuring that the gas in the air outlet channel will not leak, thereby improving the filtration efficiency, reducing the risk of unfiltered gas being directly emitted into the environment, and enhancing the cleaning effect and environmental performance of the vacuum cleaner. The sealing element not only plays a sealing role, but also fixes the position of the valve body and the valve seat to a certain extent, reducing their shaking and displacement during operation.

[0015] As an improvement, a filter chamber is provided between the suction port and the air inlet channel. The suction port, filter chamber, and air inlet channel are sequentially connected. The filter chamber is provided with a first exhaust port connected to the air outlet channel. The valve assembly is used to open and close the first exhaust port. In this technical solution, a filter chamber is added between the suction port and the air inlet channel. The suction port draws in dusty air from the environment into the filter chamber, which performs preliminary filtration of the dusty air. The gas in the filter chamber is then transported to the main unit of the vacuum cleaner through the air inlet channel, improving filtration efficiency. The filter chamber is provided with a first exhaust port connected to the air outlet channel. The valve assembly controls the opening and closing of the first exhaust port, thereby allowing the air outlet channel to switch between connecting to the air outlet and the air inlet channel. When the vacuum cleaner is lowered, the floor brush assembly is in contact with the surface to be cleaned, and the valve assembly closes the first exhaust port, allowing the air outlet channel to switch between connecting to the air outlet and the air inlet channel. With the air vent connected, air enters from the suction port, passes through the air intake channel, the motor unit of the main unit, and the air outlet channel, and is finally discharged from the air outlet. When the vacuum cleaner is lifted, the floor brush assembly detaches from the surface to be cleaned, and the valve assembly opens the first exhaust port, connecting the air outlet channel with the filter chamber. Under the action of the motor unit, the filter chamber can draw in the air from the air outlet channel through the first exhaust port. The airflow path changes to enter from the suction port, pass through the filter chamber, the air intake channel, the motor unit of the main unit, and the air outlet channel, and then return to the filter chamber through the first exhaust port, improving the filtration efficiency of the vacuum cleaner.

[0016] This application may also provide a vacuum cleaner including any of the floor brush components described above. In this technical solution, the vacuum cleaner includes a main unit and a floor brush assembly. The main unit houses a motor unit connected to the floor brush assembly. The motor unit creates negative pressure, allowing dust-laden gas to be drawn into the air intake channel. The gas in the air intake channel is then transported to the main unit of the vacuum cleaner via the motor unit. Gas discharged from the main unit is discharged through the air outlet channel. The gas discharged from the outlet can be re-drawn into the device by the suction port on the floor brush assembly for filtration, effectively reducing dust and particulate emissions, improving cleaning efficiency and environmental performance. Furthermore, the airflow within the floor brush assembly has a clear flow path, effectively guiding the flow of dust and air, improving suction efficiency. The floor brush assembly is equipped with a valve assembly that automatically adjusts the airflow path according to the contact state with the surface to be cleaned. This helps maintain airflow balance within the motor unit, preventing the motor from idling under negative pressure, thus reducing energy consumption, extending motor lifespan, and preventing the emission of incompletely filtered gas into the environment, preventing secondary pollution and protecting the environment. The floor brush assembly can automatically adjust the airflow path according to the raised and lowered usage state, requiring no manual operation from the user, making it more convenient to use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a floor brush component according to this application.

[0018] Figure 2 This is a partial structural diagram of a floor brush component according to this application.

[0019] Figure 3 This is a cross-sectional structural diagram of a floor brush component according to this application.

[0020] Figure 4 This is an exploded structural diagram of the valve assembly in this application.

[0021] Figure 5 This is a schematic diagram of the gas flow path within the floor brush assembly when it is in contact with the surface to be cleaned in this application.

[0022] Figure 6 This is a schematic diagram of the gas flow path within the floor brush assembly when it detaches from the surface to be cleaned in this application.

[0023] Figure 7 This is a three-dimensional structural diagram of the sweeper in this application.

[0024] The diagram shows: 1. Floor brush assembly; 11. Dust suction port; 12. Air outlet; 13. Filter chamber; 131. First exhaust port; 14. Air inlet channel; 15. Air outlet channel; 16. Mounting part; 161. Limiting protrusion; 17. Second traveling wheel; 18. Third traveling wheel; 2. Valve assembly; 21. Valve body; 22. Valve seat; 23. Linkage component; 24. Elastic component; 25. First traveling wheel; 3. First seal; 4. Second seal; 5. Third seal; 6. Main unit. Detailed Implementation

[0025] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0026] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0027] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0028] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figures 1 to 6 As shown, this application discloses a floor brush assembly, including a suction port 11, an air outlet 12, an air inlet channel 14, and an air outlet channel 15. The suction port 11 and the air inlet channel 14 are connected to draw in airflow. The floor brush assembly 1 is connected to the main unit 6 of a vacuum cleaner. The main unit 6 is equipped with a motor unit that is connected to the floor brush assembly 1. The motor unit creates a negative pressure, enabling the suction port 11 to draw in dust-laden gas. The suction port 11 and the air inlet channel 14 are connected, allowing the suction port 11 to draw in dust-laden air from the environment into the air inlet channel 14. The gas in the channel 14 is delivered to the main unit 6 of the vacuum cleaner. The air outlet channel 15 is connected to the air outlet 12. The gas discharged from the main unit 6 is delivered to the air outlet 12 through the air outlet channel 15. At this time, the gas discharged from the air outlet 12 can be re-drawn into the device by the suction port 11 on the floor brush assembly 1 for filtration, thereby effectively reducing the emission of dust and particles, improving cleaning efficiency and environmental performance. In addition, the airflow has a clear flow path inside the floor brush assembly 1, effectively guiding the flow of dust and air, and improving suction efficiency.

[0030] like Figure 2As shown, a valve assembly 2 is installed on the air outlet duct 15. This valve assembly 2 can automatically adjust the airflow discharge path according to the contact state between the floor brush assembly 1 and the surface to be cleaned. When the vacuum cleaner is lowered, the floor brush assembly 1 is in contact with the surface to be cleaned, and the valve assembly 2 connects the air outlet duct 15 with the air outlet 12. The air enters from the suction port 11, passes through the air inlet duct 14, the motor unit of the main unit 6, and the air outlet duct 15, and finally exits from the air outlet 12. When the vacuum cleaner is lifted, the floor brush assembly 1 is disengaged from the surface to be cleaned, and the valve assembly 2 connects the air outlet duct 15 with the air inlet duct 14. Under the action of the motor unit, the air inlet duct 14 can discharge the air... When air is drawn into the air duct 15, the airflow path changes to enter from the suction port 11, pass through the air inlet duct 14, the motor unit of the main unit 6, and the air outlet duct 15, and then return to the air inlet duct 14 through the first exhaust port 131. At this time, an internal air circulation is formed inside the vacuum cleaner, which helps to maintain the airflow balance inside the motor unit, prevents the motor from running dry under negative pressure, thereby reducing energy consumption, extending the service life of the motor, and preventing incompletely filtered air from being discharged into the environment, preventing secondary pollution and protecting the environment. The floor brush assembly 1 can automatically adjust the airflow path according to the lifting and lowering usage status, without the need for manual operation by the user, making it more convenient to use.

[0031] More specifically, such as Figures 3 to 6 As shown, valve assembly 2 includes a valve body 21 and a valve seat 22. The valve body 21 is engaged with and communicates with the air inlet channel 14. The valve body 21 and the valve seat 22 are movably connected. The valve body 21 and the valve seat 22 are separated vertically to allow the air outlet channel 15 to communicate with the air inlet channel 14. The valve body 21 and the valve seat 22 are engaged vertically to allow the air outlet channel 15 to communicate with the air outlet 12. This valve assembly 2 mainly consists of two parts: the valve body 21 and the valve seat 22. When the ground brush assembly 1 is in contact with the surface to be cleaned, such as... Figure 5 As shown, the valve body 21 and valve seat 22 are joined vertically, so that the air outlet 15 is connected to the air outlet 12. The gas in the air outlet 15 is discharged from the air outlet 12. When the floor brush assembly 1 is removed from the surface to be cleaned, as... Figure 6 As shown, the valve body 21 and the valve seat 22 are separated in the vertical direction, so that the air outlet channel 15 is connected to the air inlet channel 14. The gas in the air outlet channel 15 can enter the air inlet channel 14. The valve body 21 and the valve seat 22 have a simple structure and ingenious design, which reduces the risk of failure caused by complex structure and improves the reliability of operation.

[0032] More specifically, such as Figure 3 and Figure 4As shown, valve assembly 2 includes a linkage 23. The linkage 23 passes through the air outlet channel 15 and connects to valve seat 22. Valve seat 22 abuts against the surface to be cleaned via the linkage 23 to engage with valve body 21. Valve seat 22 also disengages from the surface to be cleaned via the linkage 23 to disengage from valve body 21. The linkage 23, passing through the air outlet channel 15 and connected to valve seat 22, serves to transmit force and movement. When the vacuum cleaner is lowered, floor brush assembly 1 adheres to the surface to be cleaned. The linkage 23 transmits the pressure between floor brush assembly 1 and the ground to valve seat 22, causing valve seat 22 to engage with valve body 21, ensuring the air outlet... The gas in the air duct 15 is discharged from the air outlet 12. When the vacuum cleaner is lifted, the floor brush assembly 1 is disengaged from the surface to be cleaned, the linkage 23 is no longer subjected to pressure from the ground, and the valve seat 22 is disengaged from the valve body 21 under its own gravity or other reset device, so that the gas in the air outlet duct 15 can enter the air inlet duct 14 for re-filtration. No additional sensors or complex electronic control systems are required. The opening and closing operation of the air outlet duct 15 can be realized through the interaction of mechanical structures alone, which reduces production costs and system complexity, while improving the reliability and stability of the operation.

[0033] More specifically, such as Figure 3 and Figure 4 As shown, the valve seat 22 is connected to an elastic element 24. When the floor brush assembly 1 is detached from the surface to be cleaned, the valve seat 22 moves under the action of the elastic element 24 to detach from the valve body 21. The elastic force of the elastic element 24 can quickly push the valve seat 22 to move in the vertical direction. The setting of the elastic element 24 enables the valve seat 22 to automatically detach from the valve body 21 when the floor brush assembly 1 of the vacuum cleaner is detached from the surface to be cleaned. No additional power source or complex control mechanism is required, which simplifies the structure and avoids the valve seat 22 being unable to automatically detach from the valve body 21 by gravity due to negative pressure, thereby improving the reliability of the valve assembly 2.

[0034] More specifically, such as Figure 3 and Figure 4 As shown, a first traveling wheel 25 is rotatably mounted on the bottom of the linkage 23. The linkage 23 contacts or disengages from the surface to be cleaned through the first traveling wheel 25. The first traveling wheel 25 and the linkage 23 form a mechanical linkage structure. The movement state of the floor brush assembly 1 in contact with or out of the ground is transmitted to the linkage 23 through the first traveling wheel 25, thereby affecting the working state of the entire valve assembly 2. The contact between the first traveling wheel 25 and the ground can provide stable support force to ensure the normal operation of the valve assembly 2. On the other hand, the design of the first traveling wheel 25 allows the vacuum cleaner to move more smoothly on the surface to be cleaned during the cleaning process, reducing the friction between the floor brush assembly 1 and the ground, making it easier and more comfortable to push the vacuum cleaner, reducing operating resistance, and improving the comfort during the cleaning process.

[0035] More specifically, such as Figure 1 As shown, the bottom of the floor brush assembly 1 is equipped with a second travel wheel 17 and a third travel wheel 18. A first travel wheel 25 is located between the second travel wheel 17 and the third travel wheel 18. The second travel wheel 17 and the third travel wheel 18 are respectively set on both sides of the first travel wheel 25 to optimize the center of gravity distribution of the floor brush assembly and further improve its flexibility and adaptability in different cleaning scenarios. The first travel wheel 25 can move in the vertical direction. The first travel wheel 25 is set between the second travel wheel 17 and the third travel wheel 18 to avoid affecting the movement of the floor brush assembly 1, so that the balance of the floor brush assembly 1 is better. There are at least two of each of the first travel wheel 25, the second travel wheel 17 and the third travel wheel 18. Multiple travel wheels can distribute the weight of the floor brush assembly, reduce the load on a single travel wheel, thereby reducing the friction between the travel wheel and the ground, making the vacuum cleaner more relaxed and free during the cleaning process, especially when crossing obstacles or turning, further improving the versatility and adaptability of the floor brush assembly 1.

[0036] More specifically, such as Figure 2 As shown, an installation part 16 is provided in the air outlet channel 15. The valve body 21 is limited and installed in the installation part 16, and the valve seat 22 is slidably installed in the installation part 16. The installation part 16 provides a stable and precise installation position for the valve assembly 2. The valve body 21 is restricted and installed in the installation part 16. This limiting installation method can use threaded connection, snap-fit ​​fixation or other mechanical fixing means to ensure that the valve body 21 can maintain the engagement state with the air inlet channel 14 during operation, avoiding gas leakage in the air inlet channel 14. The sliding installation method of the valve seat 22, combined with the precise guidance of the installation part 16, enables the valve seat 22 to accurately dock or separate from the valve body 21 in the vertical direction, effectively improving the sealing performance and control accuracy of the valve.

[0037] More specifically, such as Figure 3 As shown, the mounting part 16 is provided with a mounting hole for the linkage 23 to pass through. A first sealing element 3 is provided between the mounting hole and the linkage 23. The mounting part 16 is specially provided with a mounting hole for the linkage 23 to pass through, so that the linkage 23 can be installed accurately and stably. The first sealing element 3 effectively prevents gas from leaking from the gap between the mounting hole and the linkage 23, ensuring that the gas in the air outlet channel 15 flows along a predetermined path. The sealing element not only plays a sealing role, but also fixes the position of the linkage 23 to a certain extent, reducing its shaking and displacement in the mounting hole.

[0038] More specifically, such as Figure 3As shown, the mounting part 16 is provided with a limiting protrusion 161 adapted to the valve body 21. The valve body 21 is installed in the mounting part 16 through the limiting protrusion 161. The mounting part 16 is provided with a limiting protrusion 161 that matches the shape and size of the valve body 21. The valve body 21 can be accurately embedded in the position and range defined by the limiting protrusion 161. Through the tight fit with the limiting protrusion 161, the valve body 21 is stably installed in the mounting part 16. The valve body 21 is not easy to shake, shift or loosen during operation, which improves the sealing performance and working stability of the valve assembly 2 and avoids problems such as gas leakage or valve failure caused by inaccurate installation of the valve body 21.

[0039] More specifically, such as Figure 4 As shown, a second sealing element 4 is installed on the valve body 21 to mate with the air inlet channel 14. A third sealing element 5 is provided between the valve body 21 and the valve seat 22. The second sealing element 4 on the valve body 21 is used to seal the connection of the air inlet channel 14. When the valve body 21 is connected to the air inlet channel 14, the second sealing element 4 fits tightly against the connection port of the air inlet channel 14, forming a sealing barrier. The third sealing element 5 is provided between the valve body 21 and the valve seat 22. When the valve body 21 and the valve seat 22 are engaged in the vertical direction, the third sealing element 5 is used to fill the small gap between them, preventing gas from escaping from the valve body. Leakage between valve body 21 and valve seat 22 is prevented. The double sealing design of the second seal 4 and the third seal 5 effectively enhances the sealing effect between valve body 21 and air inlet channel 14 and between valve body 21 and valve seat 22. This ensures that the gas in air inlet channel 14 and air outlet channel 15 will not leak, thereby improving filtration efficiency, reducing the risk of unfiltered gas being directly emitted into the environment, and enhancing the cleaning effect and environmental performance of the vacuum cleaner. The seals not only play a sealing role, but also fix the position of valve body 21 and valve seat 22 to a certain extent, reducing their shaking and displacement during operation.

[0040] More specifically, such as Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a filter chamber 13 is provided between the suction port 11 and the air inlet channel 14. The suction port 11, the filter chamber 13, and the air inlet channel 14 are connected in sequence. The filter chamber 13 is provided with a first exhaust port 131 that is connected to the air outlet channel 15. The valve assembly 2 is used to open and close the first exhaust port 131. By adding a filter chamber 13 between the suction port 11 and the air inlet channel 14, the suction port 11 draws in dusty air from the environment into the filter chamber 13. The filter chamber 13 can perform preliminary filtration of the dusty air. The gas in the filter chamber 13 is transported to the main unit 6 of the vacuum cleaner through the air inlet channel 14 to improve the filtration efficiency. The first exhaust port 131 on the filter chamber 13 is connected to the air outlet channel 15. The first exhaust port 131 can be understood as the connection port between the air inlet channel 14 and the air outlet channel 15. The valve assembly 2 controls the opening and closing of the first exhaust port 131, thereby enabling the air outlet channel 15 to switch between the air inlet and the air outlet. When the vacuum cleaner is lowered, the floor brush assembly 1 is in contact with the surface to be cleaned, and the valve assembly 2 closes the first exhaust port 131, connecting the exhaust channel 15 with the exhaust port 12. Gas enters from the suction port 11, passes through the air inlet channel 14, the motor unit of the main unit 6, and the exhaust channel 15, and is finally discharged from the exhaust port 12. When the vacuum cleaner is lifted, the floor brush assembly 1 detaches from the surface to be cleaned, and the valve assembly 2 opens the first exhaust port 131, connecting the exhaust channel 15 with the filter chamber 13. Under the action of the motor unit, the filter chamber 13 can draw in the gas in the exhaust channel 15 through the first exhaust port 131. The airflow path changes to enter from the suction port 11, pass through the filter chamber 13, the air inlet channel 14, the motor unit of the main unit 6, and the exhaust channel 15, and then return to the filter chamber 13 through the first exhaust port 131, improving the filtration efficiency of the vacuum cleaner.

[0041] like Figures 1 to 7As shown, this embodiment can also disclose a vacuum cleaner, including a main unit 6 and the aforementioned floor brush assembly 1. The main unit 6 is connected to a motor, and a motor unit is provided inside the main unit 6. The motor unit creates a negative pressure, allowing the suction port 11 to draw in dust-laden gas into the air inlet channel 14. The gas in the air inlet channel 14 is transported to the main unit 6 of the vacuum cleaner. The gas discharged from the main unit 6 is transported to the air outlet 12 through the air outlet channel 15 and discharged. At this time, the gas discharged from the air outlet 12 can be re-drawn into the device by the suction port 11 on the floor brush assembly 1 for filtration, thereby effectively reducing the emission of dust and particles, improving cleaning efficiency and environmental performance. Furthermore, the airflow within the floor brush assembly 1 has a clearly defined flow path, effectively guiding the flow of dust and air and improving suction efficiency. The floor brush assembly 1 is equipped with a valve assembly 2, which can automatically adjust the airflow path according to the contact state with the surface to be cleaned. This helps maintain the airflow balance within the motor unit, preventing the motor from running dry under negative pressure, thereby reducing energy consumption, extending the motor's lifespan, and preventing incompletely filtered gas from being emitted into the environment, preventing secondary pollution and protecting the environment. The floor brush assembly 1 can automatically adjust the airflow path according to the lifting and lowering usage state, eliminating the need for manual operation by the user and making it more convenient to use.

[0042] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A floor brush assembly characterized by, It includes a suction port (11), an air outlet (12), an air inlet channel (14), and an air outlet channel (15). The suction port (11) and the air inlet channel (14) are connected to draw in airflow. A valve assembly (2) is installed on the air outlet channel (15). When the ground brush assembly (1) is in contact with the surface to be cleaned, the valve assembly (2) connects the air outlet channel (15) with the air outlet (12), and the gas in the air outlet channel (15) is discharged through the air outlet (12). When the ground brush assembly (1) is separated from the surface to be cleaned, the valve assembly (2) connects the air outlet channel (15) with the air inlet channel (14), and the gas in the air outlet channel (15) is discharged to the air inlet channel (14).

2. A brush assembly according to claim 1, wherein, The valve assembly (2) includes a valve body (21) and a valve seat (22). The valve body (21) is engaged and connected to the air inlet channel (14). The valve body (21) and the valve seat (22) are movably connected. The valve body (21) and the valve seat (22) are separated in the vertical direction to allow the air outlet channel (15) to connect with the air inlet channel (14). The valve body (21) and the valve seat (22) are engaged in the vertical direction to allow the air outlet channel (15) to connect with the air outlet (12).

3. A floor brush assembly according to claim 2, characterized in that, The valve assembly (2) includes a linkage (23), which passes through the air outlet channel (15) and connects to the valve seat (22). The valve seat (22) abuts against the surface to be cleaned through the linkage (23) to engage with the valve body (21). The valve seat (22) disengages from the surface to be cleaned through the linkage (23) to disengage from the valve body (21).

4. A floor brush assembly according to claim 3, characterized in that, The valve seat (22) is connected to an elastic element (24). When the ground brush assembly (1) is separated from the surface to be cleaned, the valve seat (22) moves under the action of the elastic element (24) to separate from the valve body (21).

5. A floor brush assembly according to claim 3, characterized in that, The bottom of the linkage (23) is rotatably mounted with a first traveling wheel (25), and the linkage (23) abuts or disengages from the surface to be cleaned through the first traveling wheel (25).

6. A floor brush assembly according to claim 5, characterized in that, The bottom of the floor brush assembly (1) is equipped with a second travel wheel (17) and a third travel wheel (18), and the first travel wheel (25) is located between the second travel wheel (17) and the third travel wheel (18); at least two of the first travel wheel (25), the second travel wheel (17) and the third travel wheel (18) are provided.

7. A floor brush assembly according to claim 3, characterized in that, An installation part (16) is provided in the air outlet channel (15), the valve body (21) is limited and installed in the installation part (16), and the valve seat (22) is slidably installed in the installation part (16); the installation part (16) is provided with an installation hole for the linkage (23) to pass through, and a first sealing element (3) is provided between the installation hole and the linkage (23).

8. A floor brush assembly according to claim 2, characterized in that, The valve body (21) is equipped with a second sealing element (4) that connects with the air inlet channel (14), and a third sealing element (5) is provided between the valve body (21) and the valve seat (22).

9. A floor brush assembly according to any one of claims 1-8, characterized in that, A filter chamber (13) is provided between the dust suction port (11) and the air inlet channel (14). The dust suction port (11), the filter chamber (13) and the air inlet channel (14) are connected in sequence. The filter chamber (13) is provided with a first exhaust port (131) connected to the air outlet channel (15). The valve assembly (2) is used to open and close the first exhaust port (131).

10. A vacuum cleaner, characterized in that, Includes a floor brush assembly as described in any one of claims 1-9.

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