Cleaning apparatus and floor brush assembly

Abstract

This disclosure relates to a cleaning device and a floor brush assembly. The cleaning device includes a floor brush assembly, which comprises: a floor brush housing, a cleaning unit, an air duct assembly, a switching element, and a roller brush cover. The air duct assembly includes a first air duct with a first suction port and a second air duct with a second suction port. The switching element is capable of selectively activating either the first or second air duct. The roller brush cover is movable relative to the floor brush housing between a third position and a fourth position. In the third position, there is a first predetermined distance between the second suction port and the working surface. In the fourth position, there is a second predetermined distance between the second suction port and the working surface. The first predetermined distance is less than the second predetermined distance. In a first operating mode, the switching element activates the second air duct, and the roller brush cover is located in the third position. In a second operating mode, the switching element activates the first air duct, and the roller brush cover is located in the fourth position.

Description

Technical Field

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

[0002] With technological advancements and improved living standards, cleaning equipment has become an essential tool. However, most cleaning devices only have a single function. For example, vacuum cleaners excel at removing dry dirt but cannot handle damp stains; carpet cleaners can only clean carpets but struggle with deep-seated grime; floor scrubbers can perform wet mopping, but dry dust and hair on the floor are stirred up and spread over a wider area during the process, increasing the cleaning difficulty. In practice, users often need to frequently switch between cleaning devices (e.g., using a vacuum cleaner to remove dust first, then using a floor scrubber for wet mopping), which is very inconvenient.

[0003] In existing technologies, some products attempt to integrate vacuuming and mopping functions into a single device. However, these products typically just combine a vacuuming system and a cleaning system, resulting in a bulky and cumbersome design. Furthermore, existing products suffer from poorly designed airflow systems, causing interference between vacuuming and cleaning functions and ultimately reducing cleaning efficiency. Moreover, these products usually require users to manually switch between functions, leading to inconvenience and messy hands.

[0004] When switching between vacuuming and cleaning functions, the non-working nozzle needs to be removed from the cleaning surface to avoid affecting the normal operation of the working nozzle. Currently, the common practice is to lift the floor brush, allowing the non-working nozzle to detach from the cleaning surface. Lifting the floor brush involves extending the support at the bottom of the brush, which usually requires the user to press or step on the corresponding drive mechanism, a laborious operation and making function switching difficult. Utility Model Content

[0005] This disclosure provides a cleaning device and a floor brush assembly to address the problems existing in the prior art.

[0006] According to a first aspect of this disclosure, a cleaning device is provided, including a floor brush assembly, the floor brush assembly comprising: Floor brush housing; Cleaning unit, the cleaning unit being mounted on the floor brush housing; The air duct assembly includes a first air duct having a first suction port and a second air duct having a second suction port; the switching element is configured to selectively open the first air duct or the second air duct. A roller brush cover is configured to move relative to the floor brush housing between a third position and a fourth position; when in the third position, the second suction port has a first predetermined distance from the working surface; when in the fourth position, the second suction port has a second predetermined distance from the working surface; wherein the first predetermined distance is less than the second predetermined distance. The cleaning device is configured to have a first working mode and a second working mode. In the first working mode, the switching element is configured to open the second air duct, and the roller brush cover is located in the third position. In the second working mode, the switching element is configured to open the first air duct, and the roller brush cover is located in the fourth position.

[0007] In one embodiment of this disclosure, a roller brush cavity is provided on the front side of the floor brush housing, and the cleaning unit is configured to be located within the roller brush cavity; the side of the roller brush cavity located in front of the cleaning unit is configured to extend downward to have a third predetermined distance between it and the working surface.

[0008] In one embodiment of this disclosure, the third predetermined distance is configured to be greater than the first predetermined distance.

[0009] In one embodiment of this disclosure, the air duct assembly includes a main cavity having an air duct outlet and a first inlet, and a bypass cavity communicating with the main cavity and having a second inlet; the first inlet communicates with the first suction port to form the first air duct; the second inlet communicates with the second suction port to form the second air duct; the switching member is configured to be movably connected in the main cavity; In the first position, the switching element is configured to block the position in the main cavity between the air duct outlet and the first inlet, so as to close the first passage between the first inlet and the air duct outlet and open the second passage between the second inlet and the air duct outlet. In the second position, the switching element is configured to block the connection between the bypass cavity and the main cavity to open the first passage and close the second passage.

[0010] In one embodiment of this disclosure, the direction in which the cleaning device moves forward is referred to as the front; the first suction port is configured to be located on the floor brush housing at the rear side of the cleaning unit, and the first passage is configured to extend obliquely downward from the air duct outlet to connect with the first suction port.

[0011] In one embodiment of this disclosure, the roller brush cover is provided with a second air duct, one end of which extends to the front of the cleaning unit and forms a second suction port; the second passage is configured to extend obliquely upward from the air duct outlet to expose the floor brush housing for communication with the second air duct.

[0012] In one embodiment of this disclosure, the cleaning device further includes a transmission unit configured to be driveably connected to the switching member and the roller brush cover. The transmission unit is configured to drive the switching member to a first position and then drive the roller brush cover to a third position; and the transmission unit is configured to drive the switching member to a second position and then drive the roller brush cover to a fourth position.

[0013] In one embodiment of this disclosure, the roller brush cover is configured to guide and fit onto the floor brush housing; the transmission unit includes a pusher movably connected to the floor brush housing, the pusher being configured to drively connect with the roller brush cover and to drive the roller brush cover to move forward or backward.

[0014] In one embodiment of this disclosure, the transmission unit includes a transmission shaft rotatably connected to the floor brush housing, the transmission shaft being configured to drive the switching member; a flange is provided on the transmission shaft, the flange being configured to drive the pushing part forward or backward during the reciprocating rotation of the transmission shaft.

[0015] In one embodiment of this disclosure, a connecting rod is further provided between the flange and the pushing part, the connecting rod being configured to be hinged to the floor brush housing; the flange is configured to drively engage with one end of the connecting rod, and the other end is configured to drively connect with the pushing part.

[0016] In one embodiment of this disclosure, a first slot and a second slot are provided on the drive shaft; a locking block is provided on the floor brush housing, the locking block being configured to be movably connected to the floor brush housing via a first elastic device; when the drive shaft is configured to drive the switching member to a first position, the locking block is configured to engage with the first slot; and when the drive shaft is configured to drive the switching member to a second position, the locking block is configured to engage with the second slot.

[0017] In one embodiment of this disclosure, the floor brush housing includes a floor brush base and a floor brush cover; a latch is provided on the floor brush cover, and a guide groove is provided on the latch; the roller brush cover is provided with a guide flange, and the guide flange is configured to guide and cooperate with the guide groove.

[0018] In one embodiment of this disclosure, the floor brush cover is provided with a mounting groove, the mounting groove forming an opening at the upper end of the floor brush cover, and the latch is configured to be movably connected to the mounting groove by a second elastic device; the lower end of the guide flange is configured to extend into the guide groove and is configured to have a limiting portion that mates with the bottom end face of the latch. In its natural state, a portion of the guide groove is configured to protrude from the opening; the latch is configured to move under external force such that the size of the guide groove protruding from the opening increases.

[0019] In one embodiment of this disclosure, a limiting groove is provided on the front side of the floor brush cover, and a limiting post that cooperates with the limiting groove is provided on the front side of the roller brush cover.

[0020] In one embodiment of this disclosure, the second air duct has a mating interface at one end adjacent to the second inlet; the second inlet is provided with a rubber-coated assembly; when the roller brush cover is in a third position, the mating interface is configured to dock with the second inlet through the rubber-coated assembly; when the roller brush cover is in a fourth position, the mating interface is configured to move with the roller brush cover to disengage from the rubber-coated assembly.

[0021] In one embodiment of this disclosure, when the brush cover is configured to move from a third position to a fourth position, one end of the brush cover adjacent to the interface is configured to move upward in an arc-shaped trajectory until it disengages from the overmolded assembly.

[0022] In one embodiment of this disclosure, when the roller brush cover is in the fourth position, the vertical projection of the mating interface is configured to be within the vertical projection range of the overmolding assembly.

[0023] In one embodiment of this disclosure, the switching member is configured to be hinged at a position where the main cavity and the bypass cavity communicate; when in a first position, the switching member participates in forming a sidewall of a second passage and is configured to be parallel to or at a predetermined angle to the sidewall of the opposite side of the second passage; when in a second position, the switching member participates in forming a sidewall of a first passage and is configured to be parallel to or at a predetermined angle to the sidewall of the opposite side of the second passage.

[0024] According to a second aspect of this disclosure, a floor brush component is also provided, comprising: Floor brush housing; Cleaning unit, the cleaning unit being mounted on the floor brush housing; The air duct assembly includes a first air duct having a first suction port and a second air duct having a second suction port; the switching element is configured to selectively open the first air duct or the second air duct. A roller brush cover is configured to move relative to the floor brush housing between a third position and a fourth position; when in the third position, the second suction port has a first predetermined distance from the working surface; when in the fourth position, the second suction port has a second predetermined distance from the working surface; wherein the first predetermined distance is less than the second predetermined distance. When in the first working mode, the switching element is configured to open the second air duct, and the brush cover is located in the third position; when in the second working mode, the switching element is configured to open the first air duct, and the brush cover is located in the fourth position.

[0025] One beneficial effect of this disclosure is that by setting up a first air duct with a first suction port and a second air duct with a second suction port, and combining the design of the air duct assembly and switching component, it is possible to switch the path between the first suction port and the air duct outlet, and the path between the second suction port and the air duct outlet. Specifically, the first suction port can be a dust suction port, and the second suction port can be a wastewater suction port, thereby achieving integrated vacuuming and wet mopping functions. Users do not need to frequently change equipment during the cleaning process, improving cleaning convenience.

[0026] Furthermore, the cleaning device disclosed herein can switch between a first working mode and a second working mode. In the second working mode, only the roller brush cover moves relative to the floor brush housing; the cleaning unit and the floor brush housing do not move with the roller brush cover. This ensures that when the roller brush cover moves upward, it does not disrupt the vacuuming operation of the first working mode, i.e., it does not disrupt the negative pressure effect formed by the first suction port on the working surface, thus guaranteeing normal vacuuming. When switching between the first and second working modes, compared to traditional switching methods (such as the user pressing or stepping on the drive mechanism to support the entire floor brush), this disclosure only requires controlling the movement of the switching mechanism and the roller brush cover, making function switching easier. The user only needs to select the current cleaning mode, and the cleaning device will automatically switch to the corresponding state, eliminating the need for effort and improving the user experience.

[0027] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0029] Figure 1 This is a schematic diagram of the structure of a cleaning device provided in an embodiment of this disclosure; Figure 2 yes Figure 1 A magnified view of the location of the ground brush component; Figure 3 This is a schematic diagram of the internal structure of a floor brush housing according to an embodiment of the present disclosure; Figure 4 This is a cross-sectional view of a duct assembly and switching component provided in an embodiment of this disclosure; Figure 5This is a partial cross-sectional view of a floor brush assembly provided in an embodiment of this disclosure when it is in a first working mode; Figure 6 This is a partial cross-sectional view of a floor brush assembly provided in an embodiment of this disclosure when it is in the second working mode; Figure 7 This is a cross-sectional view of a floor brush base provided in an embodiment of this disclosure; Figure 8 This is a schematic diagram of the card block and the first elastic device provided in an embodiment of the present disclosure; Figure 9 This is a partially enlarged cross-sectional view of the card block and the first elastic device provided in an embodiment of this disclosure; Figure 10 This is a cross-sectional view of a floor brush base and transmission unit provided in an embodiment of this disclosure; Figure 11 This is a partial cross-sectional view of a floor brush assembly provided in an embodiment of this disclosure when the roller brush cover is in the fourth position; Figure 12 This is a partial cross-sectional view of a floor brush assembly provided in an embodiment of this disclosure when the roller brush cover is in the third position; Figure 13 This is a schematic diagram of a floor brush cover structure provided in an embodiment of the present disclosure; Figure 14 yes Figure 13 A magnified view of a section at point A in the middle; Figure 15 This is a schematic diagram of the roller brush cover structure provided in one embodiment of the present disclosure; Figure 16 This is a schematic diagram of the structure of the roller brush cover and the floor brush cover provided in an embodiment of this disclosure; Figure 17 This is a partial cross-sectional view of the floor brush assembly when the roller brush cover is in the fourth position, according to another embodiment of this disclosure; Figure 18 This is a partial cross-sectional view of the floor brush assembly when the roller brush cover is in the third position, according to another embodiment of this disclosure; Figure 19 This is a cross-sectional view of the pusher and connecting rod provided in another embodiment of this disclosure.

[0030] Figures 1 to 19 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows: 100. Floor brush assembly; 101. First suction port; 102. Second suction port; 1. Floor brush housing; 11. Floor brush base; 12. Floor brush cover; 121. Locking buckle; 122. Guide groove; 123. Exposed opening; 124. Opening; 125. Limiting groove; 13. Locking block; 131. First elastic device; 14. Walking mechanism; 15. Roller brush cavity; 2. Cleaning unit; 3. Air duct assembly; 301. First passage; 302. Second passage; 31. First inlet; 32. Second inlet; 321. Rubber-coated assembly; 33. Air duct outlet; 34. Main... 35. Cavity; 36. Bypass cavity; 4. Hose connector; 4. Switching component; 41. Hinge end; 42. Free end; 51. Pushing part; 511. Mating cavity; 52. Drive shaft; 521. First slot; 522. Second slot; 53. Flange; 54. Connecting rod; 541. First branch; 542. Second branch; 6. Roller brush cover; 61. Second air duct; 611. Connecting interface; 62. Guide flange; 63. Limiting part; 64. Limiting post; 65. Handle; 7. Drive unit; 8. Water spray assembly; 200. Body; 201. Handheld part. Detailed Implementation

[0031] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0035] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0036] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0037] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0038] This disclosure provides a cleaning device and a floor brush assembly, wherein the cleaning device includes the floor brush assembly. The specific structure and working principle of the cleaning device provided by this disclosure will be described in detail below, and the specific structure and working principle of the floor brush assembly provided by this application will also be introduced.

[0039] refer to Figure 1 This disclosure provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, handheld floor scrubber, handheld fabric cleaner, handheld carpet cleaner, or other handheld cleaning devices well known to those skilled in the art. It can also be a mopping robot, a sweeping and mopping robot, or other self-moving cleaning devices used to clean surfaces such as floors, sofas, and carpets. In an embodiment where the cleaning device is a handheld carpet cleaner, the user can push the carpet cleaner across the carpet and use the carpet cleaner's brush assembly 100 to clean the work surface.

[0040] like Figure 1 As shown, the cleaning device includes a body 200 and a floor brush assembly 100 connected to the lower part of the body 200. The floor brush assembly 100 is used to clean work surfaces such as floors, carpets, or furniture surfaces. In an embodiment where the cleaning device is a handheld carpet cleaner, a handheld part 201 can also be provided on the upper part of the body 200. When using the handheld carpet cleaner for cleaning, the user can push and pull the handheld part 201 to move it and use the floor brush assembly 100 to clean the work surface.

[0041] The floor brush assembly 100 is rotatably connected to the body 200. Specifically, a pivot can be provided between the floor brush assembly 100 and the body 200, allowing the floor brush assembly 100 to rotate relative to the body 200. This facilitates the user's ability to flexibly push and pull the cleaning equipment back and forth, and allows the body 200 to switch between upright and tilted positions. When the body is tilted, the floor brush assembly 100 can clean the work surface, maintaining contact with it to effectively remove dirt and grime.

[0042] like Figure 2As shown, the cleaning equipment may include a walking mechanism 14 for the cleaning equipment to move and perform cleaning work. The walking mechanism 14 may be a travel wheel mounted on the floor brush assembly 100, which allows the cleaning equipment to move on the work surface by the user applying a forward or backward pushing force; or, when the cleaning equipment of this disclosure is a cleaning robot, it moves on the work surface under its own driving force. This document does not specifically limit other structures besides the floor brush assembly 100; those skilled in the art can select appropriate components based on existing technology.

[0043] refer to Figure 2 The floor brush device includes a floor brush housing 1, which serves as the mounting base for other components on the floor brush assembly 100. The floor brush assembly 100 also includes a cleaning unit 2 mounted on the floor brush housing 1. The cleaning unit 2 is used to clean work surfaces such as floors, carpets, or furniture surfaces. In a specific embodiment of this disclosure, the cleaning unit 2 is a roller brush, which has a cylindrical structure with both ends rotatably connected to the floor brush housing 1, and its axis of rotation can be parallel to the work surface. Cleaning cotton, brush bristles, or other types of cleaning components can be provided on the outer surface of the roller brush, thereby enabling the roller brush to wet-mop the work surface during rotation.

[0044] In one embodiment of this disclosure, reference is made to Figure 5 and Figure 6 A water spray assembly 8 is installed on the brush housing 1, and the water spray assembly 8 can be located directly above the cleaning unit 2. The water spray assembly 8 can be connected to the clean water tank through a pipe, and the water outlet of the water spray assembly 8 can face the cleaning unit 2. During the cleaning process, the clean water tank provides cleaning liquid (such as clean water, cleaning solution, etc.) to the water spray assembly 8. The liquid flowing out of the water spray assembly 8 falls onto the cleaning unit 2 under the action of gravity, thereby wetting the cleaning unit 2 and achieving wet mopping.

[0045] refer to Figure 5 and Figure 6 The floor brush assembly 100 has a first suction port 101 and a second suction port 102. Specifically, the first suction port 101 can be a dust suction port, and the second suction port 102 can be a wastewater suction port. The first suction port 101 and the second suction port 102 can be separately arranged on the floor brush assembly 100. Further, the cleaning equipment may include a fan assembly. Specifically, the fan assembly can be a negative pressure motor, which can be installed on the floor brush assembly 100 or on the body 200. During the cleaning operation, the fan assembly can remain on to provide suction. When the cleaning equipment is vacuuming, the air passage between the first suction port 101 and the fan assembly can be opened. At this time, the roller brush can continue to rotate to stir up dust and hair on the ground, thereby allowing solid dirt such as dust and hair to be sucked into the cleaning equipment through the first suction port 101.

[0046] When the cleaning equipment performs wet mopping, the air passage between the second suction port 102 and the blower assembly can be opened. As the floor brush assembly 100 moves forward, the side wall of the second suction port 102 can push down the carpet fibers. The pushed-down carpet fibers enter the roller brush cavity 15, where the water spray assembly 8 sprays water, wetting the dirt at the top, middle, and root of the carpet fibers. After being agitated by the roller brush, the dirt clumps are formed. At this point, the floor brush assembly 100 retracts, and the dirt clumps on the carpet fibers are sucked into the equipment through the second suction port 102. This allows wastewater or other damp dirt generated during wet mopping by the cleaning unit 2 to be sucked into the cleaning equipment through the second suction port 102. This disclosure integrates vacuuming and wet mopping functions, eliminating the need for users to frequently change equipment during cleaning and improving cleaning convenience.

[0047] The cleaning equipment disclosed herein also includes an air duct assembly 3, a switching element 4, and a roller brush cover 6. The air duct assembly 3 includes a first air duct with a first suction port 101 and a second air duct 61 with a second suction port 102. The switching element 4 is configured to selectively open or close the first air duct or the second air duct 61. For example, the switching element 4 can open the first air duct and block the second air duct 61, so that the negative pressure provided by the blower assembly acts only on the first air duct, allowing dirt from the working surface to enter the first air duct through the first suction port 101. Similarly, the switching element 4 can open the second air duct 61 and block the first air duct, so that the negative pressure provided by the blower assembly acts only on the second air duct 61, allowing dirt from the working surface to enter the second air duct 61 through the second suction port 102.

[0048] The roller brush cover 6 of this disclosure is configured to move relative to the brush housing 1 between a third position and a fourth position. In the third position, the second suction port 102 has a first predetermined distance from the working surface; in the fourth position, the second suction port 102 has a second predetermined distance from the working surface; wherein the first predetermined distance is less than the second predetermined distance. The second suction port 102 can be located at the bottom front side of the roller brush cover 6. When the roller brush cover 6 moves towards the working surface, the distance between the second suction port 102 and the working surface decreases, thereby enabling the second suction port 102 to function.

[0049] The cleaning device disclosed herein is configured to have a first operating mode and a second operating mode. In the first operating mode, the switching element 4 is configured to open the second air duct 61, and the roller brush cover 6 is in a third position. In the second operating mode, the switching element 4 is configured to open the first air duct, and the roller brush cover 6 is in a fourth position. The first operating mode of this disclosure can be a carpet cleaning mode. In the first operating mode, the roller brush cover 6 is lowered relative to the floor brush housing 1 to reduce the distance between the second suction port 102 and the working surface, thereby allowing the second suction port 102 to approach or extend into the carpet fibers. In addition, in this mode, the second air duct 61 is opened, and the first air duct is closed. During the cleaning process, the water spray assembly 8 sprays water, and the cleaning unit 2 rotates relative to the floor brush housing to clean the carpet. As the floor brush assembly 100 moves forward and backward on the carpet, the carpet fibers are flattened. The cleaning unit 2 stirs up and removes the dirt from the carpet fibers and mixes it with water. The wastewater mixed with dirt is sucked into the second air duct 61 through the second suction port 102 and temporarily stored in the wastewater tank of the cleaning equipment.

[0050] The second operating mode of this disclosure is a vacuuming mode. In this mode, the roller brush cover 6 rises relative to the brush housing so that the second suction port 102 is away from the work surface, allowing dirt in front of the cleaning device to enter the brush assembly 100. Additionally, in this mode, the second air duct 61 is closed, and the first air duct is open. During cleaning, the cleaning unit 2 rotates relative to the brush housing to agitate dust and hair on the work surface. The negative pressure provided by the blower assembly allows the agitated dirt on the work surface to enter the first air duct through the first suction port 101 and be temporarily stored in a wastewater tank or other location.

[0051] The cleaning device disclosed herein can switch between a first working mode and a second working mode. In the second working mode, only the roller brush cover 6 switches relative to the floor brush housing; the cleaning unit and the floor brush housing do not move with the roller brush cover 6. This ensures that when the roller brush cover 6 moves upward, it does not disrupt the vacuuming operation of the first working mode, i.e., it does not disrupt the negative pressure effect formed by the first suction port 101 on the working surface, thus guaranteeing normal vacuuming. When switching between the first and second working modes, compared to traditional switching methods (such as the user pressing or stepping on the drive component to support the entire floor brush), this disclosure only requires controlling the movement of the switching component 4 and the roller brush cover 6, making the function switching simpler. The user only needs to select the current cleaning mode, and the cleaning device will automatically switch to the corresponding state, eliminating the need for effort and improving the user experience.

[0052] The specific structures of the air duct assembly 3, the switching component 4, and the brush cover 6 of this disclosure will be described in detail below with reference to the accompanying drawings.

[0053] refer to Figures 4 to 6 The air duct assembly 3 includes an air duct outlet 33 and a first inlet 31 and a second inlet 32 ​​respectively connected to the air duct outlet 33. The first inlet 31 is configured to communicate with a first suction port 101 to form a first air duct; the second inlet 32 ​​is configured to communicate with a second suction port 102 to form a second air duct 61. In a specific embodiment of this disclosure, as... Figure 4 As shown, the air duct assembly 3 includes a main cavity 34 having an air duct outlet 33 and a first inlet 31, and a bypass cavity 35 communicating with the main cavity 34 and having a second inlet 32. One end of the main cavity 34 is used to open the first inlet 31, and the other end is used to open the air duct outlet 33. The bypass cavity 35 can be connected to the side wall of the main cavity 34, and the second inlet 32 ​​can be opened at the end of the bypass cavity 35 that is relatively far away from the main cavity 34.

[0054] The air duct assembly 3 disclosed herein adopts a structure that connects two inlets through a single air duct outlet 33, achieving integrated dry and wet functions. Compared with the traditional integration scheme of simply stacking two systems, this disclosure effectively reduces the size and weight of the cleaning equipment and avoids the problem of cumbersome operation. Furthermore, the main cavity 34 integrates the air duct outlet 33 and the first inlet 31, while the bypass cavity 35 has an independently set second inlet 32 ​​that is connected to the main cavity 34. This makes the paths of the two passages clearer and prevents them from interfering with each other, avoiding the problem of chaotic air duct paths in simple stacked designs.

[0055] In one embodiment of this disclosure, reference is made to Figure 3 A flexible hose connector 36 can also be connected to the main cavity 34. One end of the flexible hose connector 36 is configured to connect to the air duct outlet 33, and the other end can connect to the sludge storage tank. Specifically, the sludge storage tank is used to temporarily store dirt collected by the cleaning equipment. At least a portion of the sludge storage tank is used for dust collection, and at least a portion is used for wastewater storage. The fan assembly and the sludge storage tank can be connected by an air supply duct. During operation, the fan assembly can continuously draw air from the sludge storage tank through the air supply duct, thereby creating a negative pressure environment in the sludge storage tank, and then generating suction in the air duct assembly 3 through the flexible hose connector 36.

[0056] When the cleaning equipment is in its second operating mode, such as when it is vacuuming, the passage between the first suction port 101, the first inlet 31, and the air duct outlet 33 is open. Under negative pressure, dust, hair, and other solid dirt at the first suction port 101 can be sucked in, and after passing through the main cavity 34 and hose connector 36 of the air duct assembly 3, it is finally collected and temporarily stored in the wastewater storage tank. When the cleaning equipment is in its first operating mode, such as when it is mopping with water, the passage between the second suction port 102, the second inlet 32, and the air duct outlet 33 is open. Under negative pressure, wastewater at the second suction port 102 can be sucked in, and after passing through the bypass cavity 35, the main cavity 34, and the hose connector 36 of the air duct assembly 3, it is finally collected and temporarily stored in the wastewater storage tank.

[0057] The floor brush assembly 100 also includes a switching component 4, such as Figure 5 As shown, the switching element 4 is configured to move to a first position that blocks the passage between the first inlet 31 and the air duct outlet 33, thereby opening the passage between the second inlet 32 ​​and the air duct outlet 33; or, as... Figure 6 As shown, the switching element 4 is configured to move to a second position that blocks the passage between the second inlet 32 ​​and the air duct outlet 33, thereby opening the passage between the first inlet 31 and the air duct outlet 33. The switching element 4 can selectively open the air ducts corresponding to different suction ports, thereby avoiding interference between dry and wet cleaning functions. Furthermore, the switching element of this disclosure achieves function switching through mechanical movement, eliminating the need for manual operation by the user, thus avoiding dirty hands and improving the user experience.

[0058] For ease of description later, the passage between the first inlet 31 and the air duct outlet 33 is referred to as the first passage 301, and the passage between the second inlet 32 ​​and the air duct outlet 33 is referred to as the second passage 302. In a specific embodiment of this disclosure, the switching member 4 is configured to be movably connected in the main cavity 34. In the first position, as... Figure 5 As shown, the switching element 4 is configured to block the air duct outlet 33 and the first inlet 31 within the main cavity 34, thereby closing the first passage 301 and opening the second passage 302; in the second position, as Figure 6 As shown, the switching element 4 is configured to block the connection between the bypass cavity 35 and the main cavity 34, so as to open the first passage 301 and close the second passage 302.

[0059] This disclosure, by incorporating a switching element 4, ensures that the first passage 301 and the second passage 302 will not be activated simultaneously, thus structurally guaranteeing that vacuuming and wastewater suction will not occur concurrently. The switching element 4 physically isolates the first passage 301 and the second passage 302, thereby achieving functional and path separation. This effectively prevents contamination or blockage caused by the mixing of dry dirt and wet wastewater within the air duct, completely resolving the problem of mutual interference between vacuuming and cleaning functions in existing technologies, and improving airflow stability and cleaning efficiency.

[0060] In one specific embodiment of this disclosure, the switching element 4 is configured to be hinged at the position where the main cavity 34 communicates with the bypass cavity 35, such as... Figure 4 As shown, the two opposite ends of the switching element 4 are respectively designated as the hinged end 41 and the free end 42. The hinged end 41 of the switching element 4 is rotatably connected at the position where the main cavity 34 communicates with the bypass cavity 35. When in the first position, the free end 42 of the switching element 4 is configured to cooperate with the side of the air duct outlet 33 away from the bypass cavity 35, and the switching element 4 participates in forming the second passage 302; when in the second position, the free end 42 of the switching element 4 is configured to cooperate with the side of the air duct outlet 33 adjacent to the bypass cavity 35, and the switching element 4 participates in forming the first passage 301.

[0061] When the switching component 4 is in the first or second position, its free end 42 can form a mating structure with one side of the air duct outlet 33. Specifically, the free end 42 can fit tightly with the air duct outlet 33, thereby effectively sealing the currently closed passage (first passage 301 or second passage 302), avoiding airflow leakage or sewage backflow due to inadequate sealing, and improving the reliability of passage switching. In addition, regardless of whether the switching component 4 is in the first or second position, its free end 42 extends to the air duct outlet 33 and participates in forming the corresponding passage. This makes the switching component 4 itself part of the inner wall of the passage, which can guide the airflow or dirt to flow smoothly to the air duct outlet 33 along the preset path, reducing airflow turbulence and dirt retention, reducing air duct resistance, thereby improving the efficiency of dust or dirt suction and optimizing the cleaning effect.

[0062] Furthermore, in a specific embodiment of this disclosure, when in the first position, the sidewall of the switching member 4 that forms the second passage 302 is configured to be parallel to or at a predetermined angle to the opposite sidewall of the second passage 302; when in the second position, the sidewall of the switching member 4 that forms the first passage 301 is configured to be parallel to or at a predetermined angle to the opposite sidewall of the second passage 302. The predetermined angle can be limited to no more than 20°. Preferably, when the switching member 4 forms the first passage 301 or the second passage 302, the sidewall it forms is parallel to the opposite sidewall of that passage. The approximately parallel state allows airflow and dirt to flow smoothly in a basically straight direction. This design minimizes turbulence and resistance within the first passage 301 or the second passage 302, ensuring that airflow or dirt flows to the duct outlet 33 with higher efficiency.

[0063] Let the direction in which the cleaning equipment moves forward be considered "front". Figure 6 In the view direction, the right side is designated as the front, and the left side as the rear. In one embodiment of this disclosure, the first suction port 101 is configured to be located on the floor brush housing 1 at the rear of the cleaning unit 2. As mentioned above, the first suction port 101 is a dust suction port. For example, the cleaning unit 2 of the roller brush rolls forward during the cleaning process, simultaneously pushing dry dust and debris to its rear. This allows the first suction port 101 located at the rear to directly capture these accumulated dirt, thereby improving suction efficiency.

[0064] Furthermore, the first passage 301 is configured to extend downward at an angle from the air duct outlet 33 to connect with the first suction port 101. The angled first passage 301 can conform to the movement trajectory of the airflow and dirt during vacuuming, reducing the resistance in the first passage 301, allowing the negative pressure to act more directly on the first suction port 101, enhancing the adsorption force while reducing energy loss, ensuring that dry dirt enters the air duct smoothly, and optimizing the reliability and efficiency of the vacuuming function of the cleaning equipment.

[0065] In one embodiment of this disclosure, such as Figure 5 As shown, the roller brush cover 6 is provided with a second air duct 61. One end of the second air duct 61 extends to the front of the cleaning unit 2 and forms a second suction port 102. The other end of the second air duct 61 can extend to the second inlet 32 ​​of the air duct assembly 3. When the cleaning equipment performs wet mopping, the sewage at the second suction port 102 can be sucked into the second air duct 61 under negative pressure, and after flowing out of the second air duct 61, it enters the second passage 302 through the second inlet 32.

[0066] As mentioned above, the second suction port 102 is a wastewater suction port. In this disclosure, the second suction port 102, which serves as a wastewater suction port, is located on the front side of the cleaning unit 2, thus forming a front-to-back separation layout with the first suction port 101 (dust suction port). This creates favorable conditions for the physical separation of the first passage 301 and the second passage 302. The two suction ports are spatially independent, thus each corresponds to an independent airflow path, avoiding passageway cross-interference caused by the suction ports being too close together, and reducing the structural mutual influence between the dust suction and wastewater suction functions from the source.

[0067] Furthermore, the second passage 302 is configured to extend obliquely upward from the air duct outlet 33 to the exposed brush housing 1 for communication with the second air duct 61. Figure 13 As shown, the floor brush housing 1 includes a floor brush cover 12, as... Figure 16 As shown, the roller brush cover 6 is movably mounted on the floor brush cover 12. An exposure opening 123 is provided on the floor brush cover 12, and the second passage 302 can extend upwards at an angle to penetrate this opening 123, thereby exposing the floor brush housing 1 and connecting with the second air duct 61. The angled second passage 302 adapts to the flow characteristics of sewage, utilizing the combined effect of gravity and negative pressure to promote smooth sewage flow and reduce sewage residue in the second air duct 61. Furthermore, the angled design reduces resistance within the second passage 302, allowing negative pressure to act more directly on the second suction port 102, enhancing suction while reducing energy loss, ensuring smooth sewage entry into the air duct, and optimizing the reliability and efficiency of the cleaning equipment's sewage suction function.

[0068] In one embodiment of this disclosure, the roller brush cover 6 is configured to be movably connected to the floor brush housing 1, and the cleaning device further includes a transmission unit that is pultrusively connected to the roller brush cover 6 and the switching element 4. Figure 12 As shown, when the transmission unit drives the switching component 4 to the first position, the transmission unit is configured to drive the roller brush cover 6 to the third position. In the third position, the second suction port 102 has a first predetermined distance from the working surface; as shown... Figure 11 As shown, when the transmission unit drives the switching component 4 to move to the second position, the transmission unit is configured to drive the roller brush cover 6 to move to the fourth position. When in the fourth position, there is a second predetermined distance between the second suction port 102 and the working surface; wherein, the first predetermined distance is less than the second predetermined distance.

[0069] Specifically, such as Figure 5 and Figure 12As shown, when the switching component 4 is in the first position, the second passage 302 (i.e., the front sewage suction passage) is opened accordingly. At this time, the transmission unit can drive the roller brush cover 6 to move synchronously to the third position close to the working surface. Since the first predetermined distance between the second suction port 102 and the working surface is small, the sewage suction path can be shortened, the negative pressure suction effect can be enhanced, and the sewage can be efficiently sucked in, avoiding the problem of sewage residue due to insufficient suction. When the roller brush cover 6 is in the third position, the second suction port 102 can be almost in contact with the working surface. In the specific embodiment where the working surface is a carpet, the second suction port 102 can be interference-fitted with the carpet, that is, the second suction port 102 can extend into the carpet fibers, thereby sucking in the dirt located in the carpet fibers and maximizing the suction.

[0070] like Figure 6 and Figure 11 As shown, when the switching element 4 is in the second position, the first passage 301 (i.e., the rear suction passage) is opened accordingly. At this time, the transmission unit can drive the roller brush cover 6 to move synchronously to the fourth position away from the working surface. In this state, the second suction port 102 maintains a large distance from the working surface (for example, about 12mm). This can prevent the roller brush cover 6 from interfering with the adsorption of dry dirt by the rear first suction port 101, and can also prevent the second suction port 102 from contacting the working surface when it is not working, thereby avoiding unnecessary pollution.

[0071] In one embodiment of this disclosure, a roller brush cavity 15 is provided on the front side of the floor brush housing 1. The roller brush cavity 15 has a cavity adapted to the cleaning unit 2. The cleaning unit 2 is configured to be located inside the roller brush cavity 15 and protrudes from the lower end opening of the roller brush cavity 15 for contact with the work surface. The side of the roller brush cavity 15 in front of the cleaning unit 2 is configured to extend downwards to a third predetermined distance from the work surface. The roller brush cavity 15 serves as a component of the negative pressure chamber of the first suction port 101. The third predetermined distance between the bottom of its front side and the work surface ensures the negative pressure effect of the first suction port 101. Furthermore, by rationally designing the third predetermined distance, dirt on the front side of the floor brush assembly 100 can enter the roller brush cavity 15, while also ensuring sufficient negative pressure for the first suction port 101 to suck in the dirt.

[0072] In one embodiment of this disclosure, an adhesive strip is provided on the floor brush housing 1 at the rear side of the cleaning unit. The adhesive strip is configured to contact the working surface, thereby further ensuring the negative pressure effect within the roller brush cavity 15. The adhesive strip, the floor brush housing 1, and the roller brush cavity 15 together form a negative pressure cavity. The first suction port 101 is located within this negative pressure cavity and is positioned above the adhesive strip.

[0073] In one embodiment of this disclosure, the third predetermined distance is configured to be greater than the first predetermined distance. That is, when the cleaning device of this disclosure is in the first working mode, the second suction port 102 moves toward the working surface to a position below the front bottom of the roller brush cavity 15. This allows the roller brush cavity 15 to press down the carpet fibers when the carpet brush assembly 100 cleans the carpet, so that the cleaning unit 2 can clean the carpet fibers. At the same time, the second suction port 102 extends into the carpet fibers, thereby sucking in the dirt located in the carpet fibers, improving the cleaning effect of the carpet.

[0074] In one embodiment of this disclosure, the transmission unit is configured to be rotatably connected to the switching member 4, and the transmission unit is configured to drive the switching member 4 to move between a first position and a second position. The transmission unit can simultaneously drive the switching member 4 and the roller brush cover 6 to move in linkage, realizing the synchronization of function switching and the adjustment of the position of the second suction port 102. Specifically, when the transmission unit drives the switching member 4 to switch between the first position (i.e., opening the second passage 302) and the second position (i.e., opening the first passage 301), the roller brush cover 6 will move precisely to the corresponding third position (closer to the working surface) or fourth position (away from the working surface), thus eliminating the need for two additional drive mechanisms for separate control. The integrated transmission design adopted in this disclosure simplifies the internal structure of the cleaning equipment, reduces assembly complexity and failure risk, and also avoids functional conflicts caused by asynchronous movement of the switching member 4 and the roller brush cover 6 (such as the situation where the passage has been switched but the suction port position has not been adapted in time), thereby ensuring a smooth and reliable switching process between vacuuming and sewage suction modes.

[0075] In one embodiment of this disclosure, the roller brush cover 6 is configured to be guided and fitted onto the floor brush housing 1. Specifically, this guided fit can be achieved through structures such as guide rails and grooves. In this embodiment, the movement trajectory of the roller brush cover 6 is arc-shaped, and its movement trajectory can be adapted to the arc-shaped contour of the cleaning unit 2 (such as the roller brush). Reference Figures 10 to 12 The transmission unit includes a pusher 51 movably connected to the brush housing 1. The pusher 51 is configured to be drively connected to the brush cover 6 and to drive the brush cover 6 to move forward or backward. During the forward or backward movement of the pusher 51, the drive connection between the pusher 51 and the brush cover 6 enables the brush cover 6 to move along a preset arc trajectory.

[0076] Specifically, the pushing part 51 may include a push rod, one end of which can be connected to the rear side of the roller brush cover 6, thereby enabling the forward and backward displacement of the pushing part 51 to be accurately transmitted to the roller brush cover 6. When the pushing part 51 moves forward under the action of an external force, the push rod can drive the roller brush cover 6 to move forward and downward along the guide structure to the third position, so that the second suction port 102 is close to the working surface, thereby forming a better sewage suction effect. When the pushing part 51 moves backward and forward under the action of an external force, the push rod can drive the roller brush cover 6 to move backward and upward along the guide structure to the fourth position, so that the second suction port 102 is away from the working surface and avoids the working space of the cleaning unit 2, thus avoiding interference with the dust suction work of the first suction port 101.

[0077] In one embodiment of this disclosure, the transmission unit includes a transmission shaft 52 rotatably connected to the floor brush housing 1, the transmission shaft 52 being configured to be driveably connected to the switching member 4; a flange 53 is provided on the transmission shaft 52, the flange 53 being configured to drive the pushing part 51 to move forward or backward during the reciprocating rotation of the transmission shaft 52. Specifically, as Figure 2 As shown, the drive shaft 52 is rotatably connected to the floor brush housing 1. One end of the drive shaft 52 can be connected to the drive unit 7. The drive unit 7 can be a servo motor. The drive unit 7 can drive the drive shaft 52 to rotate forward or backward under program control.

[0078] The switching element 4 and the flange 53 can be coaxially mounted on the drive shaft 52. When the drive shaft 52 reciprocates, the switching element 4 and the flange 53 fixed on the shaft will rotate with the shaft. The end of the flange 53 away from the drive shaft 52 is used for transmission connection with the pusher 51. During the rotation of the flange 53 with the drive shaft 52, it can drive the pusher 51 to move back and forth linearly. When the drive unit 7 drives the drive shaft 52 to rotate forward, the drive shaft 52 can drive the switching element 4 to move to the first position, and at the same time drive the pusher 51 to move forward through the flange 53, so as to drive the brush cover 6 to move to the third position. When the drive unit 7 drives the drive shaft 52 to rotate in reverse, the drive shaft 52 can drive the switching element 4 to move to the second position, and at the same time drive the pusher 51 to move backward through the flange 53, so as to drive the brush cover 6 to move to the fourth position.

[0079] In one specific embodiment of this disclosure, reference is made to Figure 11 and Figure 12A connecting rod 54 is also provided between the flange 53 and the pushing part 51. The connecting rod 54 is configured to be hinged to the brush housing 1. The flange 53 is configured to drively engage with one end of the connecting rod 54, and the other end is configured to drively connect to the pushing part 51. The connecting rod 54 can be a straight rod structure, which is hinged to the brush housing 1 to form a lever structure. One end of the connecting rod 54 is drivenly engaged with the end of the flange 53 away from the drive shaft 52, and the other end is drivenly connected to the pushing part 51. When the drive shaft 52 drives the flange 53 to rotate, the flange 53 pushes one end of the connecting rod 54 to swing around the hinge point. The pushing part 51 may also include a mating cavity 511 provided on the rear side of the push rod. The connecting rod 54 can extend into the mating cavity 511, thereby driving the pushing part 51 to move by pushing the inner wall of the mating cavity 511.

[0080] refer to Figure 11 and Figure 12 In the view direction, when flange 53 rotates counterclockwise, the end of connecting rod 54 away from flange 53 moves forward, thereby pushing the front inner wall of mating cavity 511, causing pushing part 51 to move forward, and thus driving brush cover 6 to move to the third position. When flange 53 rotates clockwise, the end of connecting rod 54 away from flange 53 moves rearward, thereby pushing the rear inner wall of mating cavity 511, causing pushing part 51 to move rearward, and thus driving brush cover 6 to move to the fourth position.

[0081] In another specific embodiment of this disclosure, reference is made to Figures 17 to 19 Link 54 can also be non-straight, but rather a branched, irregularly shaped structure. For example... Figure 19 As shown, the connecting rod 54 is hinged to the floor brush housing 1. One end of the rod extends into the mating cavity 511, thereby driving the pushing part 51 to move by pushing the inner wall of the mating cavity 511. The other end of the rod is provided with a first branch 541 and a second branch 542. The end of the flange 53 away from the drive shaft 52 can extend into the position between the first branch 541 and the second branch 542, and realize transmission by abutting the first branch 541 and the second branch 542.

[0082] refer to Figure 17 and Figure 18 In the view direction, when flange 53 rotates counterclockwise, flange 53 abuts against the second branch 542, causing connecting rod 54 to rotate clockwise. The end of connecting rod 54 away from flange 53 moves forward, thereby pushing the front inner wall of mating cavity 511, causing pushing part 51 to move forward, and thus driving the brush cover 6 to move to the third position. When flange 53 rotates clockwise, flange 53 abuts against the first branch 541, causing connecting rod 54 to rotate counterclockwise. The end of connecting rod 54 away from flange 53 moves rearward, thereby pushing the rear inner wall of mating cavity 511, causing pushing part 51 to move rearward, and thus driving brush cover 6 to move to the fourth position.

[0083] In one embodiment of this disclosure, reference is made to Figure 5 and Figure 6 A handle 65 is provided on the upper cover 6 of the roller brush. The user can move the upper cover 6 of the roller brush between the third and fourth positions by moving the handle 65. This embodiment adopts a manual switching method, so there is no need to set up a drive unit 7. Reference Figure 5 and Figure 12 When it is necessary to switch the cleaning equipment to the first working mode (such as when cleaning a carpet), the user manually pulls the handle 65 forward, causing the roller brush cover 6 to move to the third position, so that the second suction port 102 can approach or extend into the carpet fibers; at this time, the transmission unit can simultaneously drive the switching component 4 to move to the first position, thereby opening the second passage 302 and closing the first passage 301. Wastewater or other damp dirt generated during carpet cleaning can be sucked in through the second suction port 102, the second air duct 61, and the second passage 302.

[0084] refer to Figure 6 and Figure 11 When it is necessary to switch the cleaning equipment to the second working mode (such as when vacuuming), the user manually pulls the handle 65 backward, causing the roller brush cover 6 to move to the fourth position, so that the second suction port 102 is away from the working surface; at this time, the transmission unit can synchronously drive the switching component 4 to move to the second position, thereby opening the first passage 301 and closing the second passage 302. During the vacuuming process, the dirt (such as dust, hair, etc.) stirred up by the rotation of the cleaning unit 2 can be sucked in through the first suction port 101, the first air duct, and the first passage 301.

[0085] In one embodiment of this disclosure, reference is made to Figures 7 to 9 The drive shaft 52 is provided with a first slot 521 and a second slot 522, and the floor brush housing 1 is provided with a locking block 13. The locking block 13 is configured to be movably connected to the floor brush housing 1 via a first elastic device 131. The drive shaft 52 is configured to drive the switching member 4 to the first position, and the locking block 13 is configured to engage with the first slot 521; and when the drive shaft 52 is configured to drive the switching member 4 to the second position, the locking block 13 is configured to engage with the second slot 522.

[0086] Specifically, the floor brush housing 1 includes a floor brush base 11, such as... Figure 7 and Figure 8As shown, the locking block 13 can be movably connected to the floor brush base 11 via the first elastic device 131. The first elastic device 131 is pre-pressed between the locking block 13 and the floor brush base 11, thereby providing an upward elastic force to the locking block 13. The locking block 13 can be installed on the floor brush base 11 via a limiting cover plate. The limiting cover plate is used to limit the range of motion of the locking block 13, and the top of the locking block 13 can be exposed from the slot of the limiting cover plate.

[0087] like Figure 9 As shown, the first slot 521 and the second slot 522 on the drive shaft 52 and the elastic block 13 on the brush housing 1 form a positioning structure. When the drive shaft 52 drives the switching component 4 to the first position and the roller brush cover 6 to the third position, the block 13 engages with the first slot 521 under the action of the first elastic device 131. When the drive shaft 52 drives the switching component 4 to the second position and the roller brush cover 6 to the fourth position, the block 13 engages with the second slot 152. The above structure mechanically locks the switching component 4 and the roller brush cover 6 in the target position, preventing accidental displacement of the switching component 4 and the roller brush cover 6 due to vibration or external force during the operation of the cleaning equipment, and avoiding the problem of easy loosening of the switching structure.

[0088] like Figure 7 As shown, in the axial direction of the cleaning unit 2, two combinations of the locking block 13 and the first elastic device 131 can be arranged at intervals. Correspondingly, two sets of the first locking groove 521 and the second locking groove 522 can also be axially distributed on the transmission shaft 52. The two sets of positioning structures constrain the transmission shaft 52 from two points, preventing the transmission shaft 52 from radially shifting or tilting when under force, ensuring higher positioning accuracy of the switching component 4 in the first and second positions, and enhancing positioning stability. In addition, the two sets of positioning structures make the positioning force on the transmission shaft 52 (i.e., the force applied by the locking block 13 to the transmission shaft 52) ​​evenly distributed along the axial direction, reducing component wear caused by single-point stress concentration and extending the service life of the transmission unit. Moreover, the two sets of positioning structures cooperate synchronously. Even if one set has a gap due to minor wear, the other set can still ensure basic positioning function, thereby reducing the risk of function switching failure due to single-point failure and improving the reliability of switching.

[0089] In one embodiment of this disclosure, the roller brush cover 6 is detachably mounted on the floor brush 12. (See reference...) Figures 13 to 16 The floor brush cover 12 has a mounting groove, and a latch 121 is provided in the mounting groove, such as... Figure 14 As shown, the mounting groove forms an opening 124 at the upper end of the floor brush cover 12. The latch 121 is configured to be movably connected in the mounting groove by a second elastic device. The second elastic device is used to provide a pre-tightening force for the latch 121, so that the latch 121 can movably connect the roller brush cover 6 to the floor brush cover 12 in a natural state without external force.

[0090] The latch 121 is provided with a guide groove 122, and the brush cover 6 is provided with a guide flange 62, which is configured to guide and engage with the guide groove 122. Specifically, as shown... Figure 16 As shown, the lower end of the guide flange 62 is configured to extend into the guide groove 122 and is configured to have a limiting part 63 that mates with the bottom end face of the latch 121. The limiting part 63 may be a flange structure at the bottom of the guide flange 62, and the upper end face of the limiting part 63 is used to mate with the bottom end face of the latch 121.

[0091] In its natural state, part of the guide groove 122 is configured to protrude from the opening 124. When the brush cover 6 moves between the third and fourth positions, the guide groove 122 restricts the displacement of the guide flange 62, thereby preventing the brush cover 6 from loosening or wobbling laterally during movement and ensuring the stability of the movement trajectory. At the same time, the limiting part 63 constrains the brush cover 6 vertically. In its natural state, the latch 121 partially blocks the opening 124 under the action of the second elastic device, so that the limiting part 63 abuts against the bottom of the latch 121, preventing the brush cover 6 from wobbling in the vertical direction.

[0092] The latch 121 is configured to move under external force, causing the guide groove 122 to protrude larger from the opening 124. At this point, the user can remove the roller brush cover 6 from the floor brush cover 12. Specifically, when it is necessary to remove the roller brush cover 6, the user can apply external force to the latch 121 using the handle provided on the floor brush cover 12. The latch 121 then moves within the mounting groove, overcoming the elastic force of the second elastic device. At this time, as the latch 121 moves, the guide groove 122 on the latch 121 protrudes larger from the opening 124 at the upper end of the floor brush cover 12, and the limiting portion 63 at the lower end of the guide flange 62 is no longer vertically constrained by the bottom end face of the latch 121. Since the lower end of the guide flange 62 is released from the guide groove 122 due to the increased exposed size of the guide groove 122, the user can pull the roller brush cover 6 along the extension direction of the guide groove 122 to disengage the guide flange 62 from the guide groove 122, thereby removing the roller brush cover 6 from the floor brush cover 12.

[0093] In one embodiment of this disclosure, such as Figure 13 As shown, a limiting groove 125 is provided on the front side of the floor brush cover 12, such as... Figure 15 As shown, a limiting post 64 that mates with the limiting groove 125 is provided on the front side of the roller brush cover 6. The limiting groove 125 on the front side of the brush cover 12 and the limiting post 64 on the front side of the roller brush cover 6 form an auxiliary guide structure, and together with the guide groove 122 of the latch 121, they form a double positioning. When the roller brush cover 6 moves along an arc, the limiting post 64 slides synchronously within the limiting groove 125, thereby guiding and limiting the front end of the roller brush cover 6, enhancing the accuracy and stability of the movement trajectory of the roller brush cover 6.

[0094] In one embodiment of this disclosure, reference is made to Figure 5 and Figure 6 The second air duct 61 has a mating interface 611 at one end adjacent to the second inlet 32, and the second inlet 32 ​​is provided with a rubber-coated assembly 321. When the roller brush cover 6 is in the third position, the mating interface 611 is configured to connect with the second inlet 32 ​​through the rubber-coated assembly 321. When the roller brush cover 6 is in the fourth position, the mating interface 611 is configured to move with the roller brush cover 6 until it disengages from the rubber-coated assembly 321. This disclosure improves the sealing performance of the second passage 302 by the matching design of the mating interface 611 and the rubber-coated assembly 321 in the second air duct 61.

[0095] Specifically, when the roller brush cover 6 is in the third position, the second passage 302 is open, allowing the cleaning device to perform wastewater suction. At this time, the interface 611 is tightly connected to the second inlet 32 ​​via the rubber-coated assembly 321. The elastic deformation of the rubber coating compensates for assembly errors, ensuring the sealing of the second passage 302, preventing water leakage from causing internal contamination of the cleaning device, and avoiding air leakage from causing a decrease in suction power. When in the fourth position, the first passage 301 is open, allowing the cleaning device to perform dust suction. At this time, the interface 611 moves with the roller brush cover 6 to detach from the rubber-coated assembly 321, avoiding interference with the first passage 301.

[0096] In one specific embodiment of this disclosure, when the brush cover 6 is configured to move from the third position to the fourth position, the end of the brush cover 6 adjacent to the interface 611 is configured to move upward in an arc-shaped trajectory until it disengages from the overmolding assembly 321. This allows the interface 611 to gradually separate from the overmolding assembly 321, rather than through a hard peel. This arc-shaped movement reduces friction during separation, preventing wear or deformation of the overmolding assembly 321 due to frequent hard contact, thus extending its service life. Furthermore, the arc-shaped gradual disengagement prevents sewage splashing or airflow turbulence caused by sudden pressure changes within the second passage 302, ensuring a smooth separation process and thereby improving the reliability of the switching between the two modes.

[0097] In one specific embodiment of this disclosure, when the roller brush cover 6 is in the fourth position, the vertical projection of the interface 611 is configured to fall within the vertical projection range of the coating assembly 321. When the roller brush cover 6 is in the fourth position, the second passage 302 is closed, the first passage 301 is open, and the interface 611 moves with the roller brush cover 6 until it is detached from the coating assembly 321. However, the vertical projection of the interface 611 still falls within the vertical projection range of the coating assembly 321, that is, the interface 611 is directly above the coating assembly 321. At this time, residual liquid in the second air duct 61 (such as wastewater that has not been completely sucked up) may drip naturally from the interface 611. Due to the positional correspondence, the dripping liquid can accurately fall into the second inlet 32 ​​without contaminating other structures of the cleaning equipment, ensuring that all components can work normally during the vacuuming process without being interfered with by the liquid.

[0098] This disclosure also provides a method for controlling a cleaning device, including: In the first working mode, the control switch 4 activates the second air duct 61, and the control roller brush cover 6 moves to the third position, so that the second suction port 102 is close to the working surface, and dirt enters the second air duct 61 through the second suction port 102. Further, in the first working mode, the control cleaning unit 2 rotates, and the control water spray assembly 8 performs water spraying to wet mop the working surface, and wastewater enters the second air duct 61 through the second suction port 102.

[0099] Specifically, the first working mode can be a carpet cleaning mode, in which the cleaning equipment can perform wet mopping. The roller brush cover 6 descends relative to the floor brush housing 1, reducing the distance between the second suction port 102 and the working surface, thereby allowing the second suction port 102 to approach or extend into the carpet fibers. When the floor brush assembly 100 moves forward, the side wall of the second suction port 102 can push down the carpet fibers, which enter the roller brush cavity 15. The water spray assembly 8 sprays water, wetting the dirt at the top, middle, and root of the carpet fibers. After being agitated by the roller brush, the dirt clumps become sludge. At this time, the floor brush assembly 100 retracts, and the sludge clumps on the carpet fibers are sucked into the equipment through the second suction port 102. Thus, the wastewater or other damp dirt generated by the cleaning unit 2 during wet mopping can be sucked into the second air duct 61 through the second suction port 102 and temporarily stored in the wastewater tank of the cleaning equipment.

[0100] In the second working mode, the control switch 4 opens the first air duct, and the control roller brush cover 6 moves to the fourth position, so that the second suction port 102 is away from the working surface, and dirt enters the first air duct through the first suction port 101. Furthermore, in the second working mode, the control cleaning unit 2 rotates, and the control water spray assembly 8 remains closed to vacuum the working surface, and solid dirt enters the first air duct through the first suction port 101.

[0101] Specifically, the second working mode can be a vacuuming mode, in which the roller brush cover 6 rises relative to the brush housing so that the second suction port 102 is away from the working surface, allowing dirt in front of the cleaning device to enter the brush assembly 100. In this mode, the second air duct 61 is closed, and the first air duct is open. During cleaning, the cleaning unit 2 rotates relative to the brush housing to agitate dust and hair on the working surface. The negative pressure provided by the blower assembly allows the agitated dirt to enter the first air duct through the first suction port 101 and be temporarily stored in a wastewater tank or other location.

[0102] The cleaning device disclosed herein can switch between a first working mode and a second working mode. In the second working mode, only the roller brush cover 6 switches relative to the floor brush housing; the cleaning unit and the floor brush housing do not move with the roller brush cover 6. This ensures that when the roller brush cover 6 moves upward, it does not disrupt the vacuuming operation of the first working mode, i.e., it does not disrupt the negative pressure effect formed by the first suction port 101 on the working surface, thus guaranteeing normal vacuuming. When switching between the first and second working modes, compared to traditional switching methods (such as the user pressing or stepping on the drive component to support the entire floor brush), this disclosure only requires controlling the movement of the switching component 4 and the roller brush cover 6, making the function switching simpler. The user only needs to select the current cleaning mode, and the cleaning device will automatically switch to the corresponding state, eliminating the need for effort and improving the user experience.

[0103] Application scenarios In home cleaning scenarios, the cleaning equipment is a carpet cleaner, which users use to clean carpets. To improve cleaning effectiveness, the carpet needs to be vacuumed first, and then wet-mopped.

[0104] During vacuuming, the drive unit 7 drives the transmission shaft 52 to reverse, which in turn moves the switching element 4 to the second position. Simultaneously, the flange 53 drives the pushing part 51 to move backward, thereby driving the roller brush cover 6 to the fourth position, so that the second suction port 102 is in a position away from the carpet. In the second position, the switching element 4 blocks the connection between the bypass cavity 35 and the main cavity 34, thereby opening the first passage 301 and closing the second passage 302. The passage between the first suction port 101, the first inlet 31, and the air duct outlet 33 is open. Under negative pressure, dust, hair, and other solid dirt at the first suction port 101 can be sucked in, and after passing through the main cavity 34 of the air duct assembly 3 and the hose connector 36, it is finally collected and temporarily stored in the sludge storage tank.

[0105] During wet mopping, the drive unit 7 drives the transmission shaft 52 to rotate forward. The transmission shaft 52 can move the switching element 4 to the first position, and simultaneously drive the pushing part 51 forward through the flange 53, thereby driving the roller brush cover 6 to move to the third position, so that the second suction port 102 is in close contact with the carpet. In the first position, the switching element 4 is positioned in the main cavity 34 between the air duct outlet 33 and the first inlet 31 to close the first passage 301 and open the second passage 302. The passage between the second suction port 102, the second inlet 32 ​​and the air duct outlet 33 is open. Under negative pressure, the sewage at the second suction port 102 can be sucked in and passed through the bypass cavity 35 of the air duct assembly 3, the main cavity 34 and the hose connector 36, and is finally collected and temporarily stored in the sewage storage tank.

[0106] This disclosure integrates a first suction port 101 and a second suction port 102 on the floor brush assembly 100, combined with the air duct assembly 3 and the switching element 4, thereby achieving integrated vacuuming and wet mopping functions. Users no longer need to frequently change equipment during cleaning, improving cleaning convenience. Furthermore, the air duct assembly 3 uses a structure where the same air duct outlet 33 connects the two inlets, achieving dry and wet function integration. Compared to traditional integration schemes that simply stack two systems, this disclosure effectively reduces the size and weight of the carpet cleaner, avoiding the problem of cumbersome operation. The switching element 4 can selectively open the air duct corresponding to different suction ports, thereby preventing interference between dry and wet cleaning functions. Additionally, the switching element 4 of this disclosure achieves function switching through mechanical movement, eliminating the need for manual operation and preventing dirty hands, thus improving the user experience.

[0107] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that, Includes a floor brush assembly (100), the floor brush assembly (100) comprising: Floor brush housing (1); Cleaning unit (2), the cleaning unit (2) is disposed on the floor brush housing (1); The air duct assembly (3) and the switching element (4) are provided. The air duct assembly (3) includes a first air duct with a first suction port (101) and a second air duct (61) with a second suction port (102). The switching element (4) is configured to selectively open the first air duct or the second air duct (61). The roller brush cover (6) is configured to move relative to the floor brush housing (1) between a third position and a fourth position; when in the third position, the second suction port (102) has a first predetermined distance from the working surface; when in the fourth position, the second suction port (102) has a second predetermined distance from the working surface; wherein the first predetermined distance is less than the second predetermined distance. The cleaning device is configured to have a first working mode and a second working mode. When in the first working mode, the switching element (4) is configured to open the second air duct (61) and the roller brush cover (6) is located in the third position. When in the second working mode, the switching element (4) is configured to open the first air duct and the roller brush cover (6) is located in the fourth position.

2. The cleaning equipment according to claim 1, characterized in that, A roller brush cavity (15) is provided on the front side of the floor brush housing (1), and the cleaning unit (2) is configured to be located inside the roller brush cavity (15); the side of the roller brush cavity (15) located in front of the cleaning unit (2) is configured to extend downward to have a third predetermined distance between it and the working surface.

3. The cleaning equipment according to claim 2, characterized in that, The third predetermined distance is configured to be greater than the first predetermined distance.

4. The cleaning equipment according to claim 1, characterized in that, The air duct assembly (3) includes a main cavity (34) having an air duct outlet (33) and a first inlet (31), and a bypass cavity (35) communicating with the main cavity (34) and having a second inlet (32); the first inlet (31) communicates with the first suction port (101) to form the first air duct; the second inlet (32) communicates with the second suction port (102) to form the second air duct (61); the switching member (4) is configured to be movably connected in the main cavity (34); In the first position, the switching element (4) is configured to block the position in the main cavity (34) between the air duct outlet (33) and the first inlet (31) to close the first passage (301) between the first inlet (31) and the air duct outlet (33) and open the second passage (302) between the second inlet (32) and the air duct outlet (33). In the second position, the switching element (4) is configured to block the connection between the bypass cavity (35) and the main cavity (34) to open the first passage (301) and close the second passage (302).

5. The cleaning equipment according to claim 4, characterized in that, The direction in which the cleaning equipment moves forward is referred to as the front; the first suction port (101) is configured to be located on the floor brush housing (1) at the rear side of the cleaning unit (2), and the first passage (301) is configured to extend obliquely downward from the air duct outlet (33) to connect with the first suction port (101).

6. The cleaning equipment according to claim 4, characterized in that, The top cover (6) of the roller brush is provided with a second air duct (61), one end of which extends to the front side of the cleaning unit (2) and forms a second suction port (102); the second passage (302) is configured to extend obliquely upward from the air duct outlet (33) to expose the floor brush housing (1) for communication with the second air duct (61).

7. The cleaning equipment according to claim 6, characterized in that, The cleaning device further includes a transmission unit configured to be connected to the switching element (4) and the roller brush cover (6) in a transmission manner. The transmission unit is configured to move the roller brush cover (6) to a third position when the switching element (4) is moved to a first position; and the transmission unit is configured to move the roller brush cover (6) to a fourth position when the switching element (4) is moved to a second position.

8. The cleaning equipment according to claim 7, characterized in that, The roller brush cover (6) is configured to be guided and fitted on the floor brush housing (1); the transmission unit includes a pusher (51) movably connected to the floor brush housing (1), the pusher (51) being configured to be drively connected to the roller brush cover (6) and to drive the roller brush cover (6) to move forward or backward.

9. The cleaning equipment according to claim 8, characterized in that, The transmission unit includes a transmission shaft (52) rotatably connected to the floor brush housing (1), the transmission shaft (52) being configured to be connected to the switching member (4) in a transmission manner; a flange (53) is provided on the transmission shaft (52), the flange (53) being configured to drive the pushing part (51) to move forward or backward during the reciprocating rotation of the transmission shaft (52).

10. The cleaning equipment according to claim 9, characterized in that, A connecting rod (54) is also provided between the flange (53) and the pusher (51). The connecting rod (54) is configured to be hinged to the floor brush housing (1). The flange (53) is configured to drively engage with one end of the connecting rod (54) and the other end is configured to drively connect with the pusher (51).

11. The cleaning equipment according to claim 9, characterized in that, A first slot (521) and a second slot (522) are provided on the drive shaft (52); a block (13) is provided on the floor brush housing (1), the block (13) being configured to be movably connected to the floor brush housing (1) via a first elastic device (131); the drive shaft (52) is configured to drive the switching member (4) to move to the first position, the block (13) being configured to engage with the first slot (521); and when the drive shaft (52) is configured to drive the switching member (4) to move to the second position, the block (13) being configured to engage with the second slot (522).

12. The cleaning equipment according to claim 8, characterized in that, The floor brush housing (1) includes a floor brush base (11) and a floor brush cover (12); a latch (121) is provided on the floor brush cover (12), and a guide groove (122) is provided on the latch (121); the roller brush cover (6) is provided with a guide flange (62), and the guide flange (62) is configured to guide and cooperate with the guide groove (122).

13. The cleaning equipment according to claim 12, characterized in that, The floor brush cover (12) is provided with a mounting groove, the mounting groove forming an opening (124) at the upper end of the floor brush cover (12), the latch (121) is configured to be movably connected in the mounting groove by a second elastic device; the lower end of the guide flange (62) is configured to extend into the guide groove (122) and is configured to have a limiting part (63) that cooperates with the bottom end face of the latch (121). In its natural state, part of the guide groove (122) is configured to protrude from the opening (124); the latch (121) is configured to move under external force to increase the size of the guide groove (122) protruding from the opening (124).

14. The cleaning equipment according to claim 12, characterized in that, A limiting groove (125) is provided on the front side of the ground brush cover (12), and a limiting post (64) that cooperates with the limiting groove (125) is provided on the front side of the roller brush cover (6).

15. The cleaning equipment according to claim 8, characterized in that, The second air duct (61) has a mating interface (611) at one end adjacent to the second inlet (32); the second inlet (32) is provided with a rubber-coated assembly (321); when the roller brush cover (6) is in the third position, the mating interface (611) is configured to connect with the second inlet (32) through the rubber-coated assembly (321); when the roller brush cover (6) is in the fourth position, the mating interface (611) is configured to move with the roller brush cover (6) until it disengages from the rubber-coated assembly (321).

16. The cleaning equipment according to claim 15, characterized in that, When the brush cover (6) is configured to move from the third position to the fourth position, the end of the brush cover (6) adjacent to the interface (611) is configured to move upward in an arc-shaped trajectory until it disengages from the rubber-coated assembly (321).

17. The cleaning equipment according to claim 15, characterized in that, When the top cover (6) of the roller brush is in the fourth position, the vertical projection of the interface (611) is configured to be within the vertical projection range of the overmolding assembly (321).

18. The cleaning equipment according to claim 4, characterized in that, The switching element (4) is configured to be hinged to the position where the main cavity (34) and the bypass cavity (35) are connected; when in the first position, the switching element (4) participates in forming the side wall of the second passage (302) and is configured to be parallel to or at a predetermined angle to the side wall of the opposite side of the second passage (302); when in the second position, the switching element (4) participates in forming the side wall of the first passage (301) and is configured to be parallel to or at a predetermined angle to the side wall of the opposite side of the second passage (302).

19. A floor brush assembly, characterized in that, include: Floor brush housing (1); Cleaning unit (2), the cleaning unit (2) is disposed on the floor brush housing (1); The air duct assembly (3) and the switching element (4) are provided. The air duct assembly (3) includes a first air duct with a first suction port (101) and a second air duct (61) with a second suction port (102). The switching element (4) is configured to selectively open the first air duct or the second air duct (61). The roller brush cover (6) is configured to move relative to the floor brush housing (1) between a third position and a fourth position; when in the third position, the second suction port (102) has a first predetermined distance from the working surface; when in the fourth position, the second suction port (102) has a second predetermined distance from the working surface; wherein the first predetermined distance is less than the second predetermined distance. When in the first working mode, the switching element (4) is configured to open the second air duct (61), and the brush cover (6) is in the third position; when in the second working mode, the switching element (4) is configured to open the first air duct, and the brush cover (6) is in the fourth position.

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