Cleaning equipment and cleaning system

Abstract

The embodiment of the utility model provides cleaning equipment and a cleaning system, and the cleaning equipment comprises a machine body assembly which comprises a main machine body and a sewage tank, and the sewage tank is arranged on the main machine body; the floor brush assembly comprises a shell, a dirt suction pipeline, cleaning parts and walking wheels, a dirt suction opening is formed in the bottom of the shell, one end of the dirt suction pipeline communicates with the dirt suction opening, the other end of the dirt suction pipeline extends out of the shell and communicates with the interior of the sewage tank, and the cleaning parts and the walking wheels are arranged on the floor brush assembly in the first direction at intervals; the sewage tank is arranged on the side, away from the cleaning part, of the main machine body in the first direction, and a sewage outlet is formed in the bottom end of the sewage tank; and the connecting mechanism is connected between the main machine body and the shell and located between the part, extending out of the shell, of the dirt suction pipeline and the cleaning piece in the first direction, and the main machine body is in a lying state under the condition that the main machine body is located at the second position. According to the technology disclosed by the invention, the cleaning equipment can simultaneously meet the requirements of automatic pollution discharge and cleaning for other special scenes such as low spaces.

Description

Technical Field

[0001] The present disclosure relates to the technical field of household appliances, and particularly to a cleaning device and a cleaning system. Background Art

[0002] With the development of social productive forces, people's living standards have also been improved. On the premise that the material basis is guaranteed, people begin to use various tools to reduce labor and improve the quality of life, and household cleaning devices emerge as the times require. Take a floor washer as an example. When working, clean water is sprayed onto the surface to be cleaned, and a high-speed rotating roller brush quickly rubs against the surface to be cleaned. At the same time, stains on the surface to be cleaned and dirt on the roller brush are sucked into the sewage bucket, and finally the cleaning purpose is achieved.

[0003] In the floor washer in the related art, generally, the sewage tank is located at the front side or the rear side of the machine body. When the sewage tank is located at the front side of the machine body, the sewage tank cannot be docked with the base station for sewage discharge; when the sewage tank is located at the rear side of the machine body and is docked with the base station for sewage discharge, since the sewage tank protrudes from the rear side of the machine body, the flat cleaning function cannot be realized. That is, the existing floor washer cannot simultaneously realize the flat cleaning function and the function of automatically discharging sewage by docking with the base station. Moreover, generally, two driving wheels are arranged on both sides of the floor brush in the existing floor washer to assist in powering, but since the driving wheel itself has a transmission mechanism, a certain force needs to be applied to make it rotate from a stationary state. In addition, the adapter connecting the main body and the floor brush is located at the middle position at the rear of the floor brush (that is, the rotation center of the whole machine is in the middle), and the driving wheel is far from the rotation center of the whole machine, which further increases the steering force and makes steering difficult. Summary of the Utility Model

[0004] Embodiments of the present disclosure provide a cleaning device and a cleaning system to solve or alleviate one or more technical problems in the prior art.

[0005] In a first aspect, an embodiment of the present disclosure provides a cleaning device, including: a body assembly, including a main body and a sewage tank, the sewage tank is arranged on the main body; a floor brush assembly, including a housing, a sewage suction pipe, a cleaning member and a traveling wheel, a sewage suction port is opened at the bottom of the housing, one end of the sewage suction pipe is communicated with the sewage suction port, the other end of the sewage suction pipe extends out of the housing and is communicated with the inside of the sewage tank, the cleaning member is used for cleaning the surface to be cleaned, and the cleaning member and the traveling wheel are arranged on the floor brush assembly at intervals in a first direction; the sewage tank is arranged on a side of the main body away from the cleaning member in the first direction, the sewage tank has a bottom end adjacent to the floor brush assembly, and a sewage discharge port communicating the inside and the outside of the sewage tank is opened at the bottom end; a connecting mechanism is connected between the main body and the housing, so that the main body can rotate relative to the housing around a first rotation axis between a first position and a second position, and the main body is in a flat state when located at the second position; wherein, the connecting mechanism is located between the part where the sewage suction pipe extends out of the housing and the cleaning member in the first direction.

[0006] In one embodiment, there is a docking space between the sewage outlet and the floor brush assembly. The part of the sewage suction pipe extending outside the housing is located between the connecting mechanism and the docking space in the first direction, and the sewage outlet is arranged on the side of the part of the sewage suction pipe extending outside the housing away from the connecting mechanism.

[0007] In one embodiment, the traveling wheels include driving wheels. The driving wheels are located on the side of the connecting mechanism away from the cleaning member in the first direction, and the part of the sewage suction pipe extending outside the housing is located between the connecting mechanism and the driving wheels in the first direction.

[0008] In one embodiment, the first rotation axis is parallel to the second direction, and the second direction is perpendicular to the first direction; wherein, the rotation center of the driving wheel is located on the side of the first rotation axis away from the cleaning member in the first direction.

[0009] In one embodiment, the distance between the first rotation axis and the surface to be cleaned is D1, the distance between the rotation center of the driving wheel and the surface to be cleaned is D2, and D1 > D2 is satisfied.

[0010] In one embodiment, the distance D1 between the first rotation axis and the surface to be cleaned is greater than the diameter of the driving wheel.

[0011] In one embodiment, when the main body is in the second position, the first rotation axis is located on the side of the sewage suction pipe away from the surface to be cleaned.

[0012] In one embodiment, when the main body is in the second position, the projection distance in the normal direction of the surface to be cleaned of the connection line between the first rotation axis and the edge of the bottom end of the sewage tank on the side away from the main body is D3, and the distance between the first rotation axis and the surface to be cleaned is D1, and D3 ≤ L1 is satisfied.

[0013] In one embodiment, the cleaning device further includes: a driving assembly, arranged inside the housing. The driving assembly includes a driving motor and a transmission mechanism. The output shaft of the driving motor is in transmission connection with the input end of the transmission mechanism, and the output end of the transmission mechanism is in transmission connection with the driving wheel; wherein, the distance between the output shaft of the driving motor and the surface to be cleaned is D6, the distance between the rotation center of the driving wheel and the surface to be cleaned is D2, and D6 > D2 is satisfied.

[0014] In one embodiment, the connecting mechanism includes a first connecting member and a second connecting member. The first connecting member is rotatably connected to the housing, and the first connecting member can rotate relative to the housing around the first rotation axis. The second connecting member is rotatably connected to the first connecting member, and the second connecting member can rotate relative to the first connecting member around the second rotation axis. The second connecting member is connected to the main body; wherein, the second rotation axis is perpendicular to the first direction, and the second connecting member is located above the first connecting member.

[0015] In one embodiment, when the main body is in the first position, the included angle between the extending direction of the first connecting member and the first direction of the housing is an acute angle.

[0016] In one embodiment, an avoidance notch is formed at the top of the housing, and the avoidance notch extends to the side of the top of the housing away from the cleaning member in the first direction. The connecting mechanism passes through the avoidance notch and is movably connected to the housing.

[0017] In one embodiment, the traveling wheel includes a driving wheel, and the avoidance notch extends above the driving wheel. When the main body is in the second position, the part of the sewage suction pipe above the driving wheel is accommodated in the avoidance notch.

[0018] In one embodiment, the traveling wheel includes a driving wheel, the driving wheel is arranged on the side of the housing away from the cleaning member, the driving wheel is centrally arranged at the bottom of the housing in the second direction, and the connecting mechanism is centrally arranged relative to the housing in the second direction.

[0019] In one embodiment, the traveling wheel includes a driving wheel; an embedding hole is formed at the bottom of the housing, the driving wheel is arranged in the embedding hole, and at least part of the driving wheel is located inside the housing.

[0020] In a second aspect, an embodiment of the present disclosure further provides a cleaning device, including: a body assembly including a main body and a sewage tank, the sewage tank is arranged on the main body; a floor brush assembly including a housing, a sewage suction pipe, a cleaning member and a driving wheel, a sewage suction port is formed at the bottom of the housing, one end of the sewage suction pipe is communicated with the sewage suction port, the other end of the sewage suction pipe extends out of the housing and is communicated with the inside of the sewage tank, the cleaning member is used for cleaning the surface to be cleaned, and the cleaning member and the driving wheel are arranged at intervals at the bottom of the housing in the first direction; a connecting mechanism connected between the main body and the housing to enable the main body to rotate relative to the housing about a first rotation axis between a first position and a second position; wherein, the driving wheel is located on the side of the connecting mechanism away from the cleaning member in the first direction, and the part of the sewage suction pipe extending out of the housing is located between the connecting mechanism and the driving wheel in the first direction.

[0021] In one embodiment, the connecting mechanism, the sewage suction pipe and the driving wheel overlap in projection in the first direction.

[0022] In one embodiment, the center line of the connecting mechanism in the first direction passes through the rotation center of the driving wheel.

[0023] In a third aspect, an embodiment of the present disclosure further provides a cleaning system, including: a base station and the cleaning device according to any one of the above embodiments of the present disclosure, and the cleaning device can be detachably placed on the base station.

[0024] In one embodiment, the base station has a first bearing part and a second bearing part; the first bearing part is used for bearing the floor brush assembly and has a first support surface for bearing the floor brush assembly, and a receiving groove for accommodating the driving wheel of the floor brush assembly is provided on the first bearing part; the second bearing part is used for docking with the sewage outlet of the sewage tank, and the second bearing part has a sewage discharge groove for docking with the sewage outlet of the sewage tank; wherein, the receiving groove is located within the range of the orthographic projection of the second bearing part on the first support surface.

[0025] In one embodiment, a rolling mating surface is formed on the outer wall surface of the second bearing part, and during the process of the cleaning device detaching from the base station, the rolling mating surface is used for forming a rolling fit with the driving wheel.

[0026] In one embodiment, the first bearing part further has two charging contacts arranged at intervals, and the two charging contacts are located on opposite sides of the receiving groove; wherein, the two charging contacts are arranged adjacent to the contour edge line of the orthographic projection of the second bearing part within the first support surface.

[0027] According to the cleaning device of the present disclosure embodiment, by arranging the sewage tank on the side of the main body away from the cleaning part, and by providing a sewage discharge port at the bottom end of the sewage tank, the sewage in the sewage tank can be discharged to the sewer through the docking of the cleaning device with the base station, so that the cleaning device and the base station are docked to achieve automatic sewage discharge. At the same time, by making the connecting mechanism located between the part of the sewage suction pipe extending outside the housing and the cleaning part in the first direction, the position of the first rotation axis can be moved forward and upward in the first direction, so that during the rotation of the sewage tank along with the main body, when the main body rotates to the second position, the sewage tank can be prevented from interfering with the surface to be cleaned, thereby ensuring that there can be a large rotation range between the main body and the housing, ensuring that the main body can be in a lying state when in the second position, and further meeting the cleaning requirements for low spaces and improving the user experience. In addition, the driving wheel is arranged in the middle, which can enable the cleaning device to be easily turned without the user exerting much effort, and the forward and upward movement of the position of the first rotation axis in the first direction also provides an installation space for the middle arrangement of the driving wheel. When the main body rotates to the third position (tilted) or the second position (lying flat), the connecting mechanism will not interfere with the driving wheel.

[0028] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0029] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments in accordance with the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0030] Figure 1 Schematic diagram showing the structure of the cleaning device according to an embodiment of the present disclosure when the main body is in the first position;

[0031] Figure 2 Schematic diagram showing the structure of the cleaning device according to an embodiment of the present disclosure when the main body is in the second position;

[0032] Figure 3 Showing Figure 1 Partial structural sectional view in;

[0033] Figure 4 Rear view showing the cleaning device according to an embodiment of the present disclosure;

[0034] Figure 5 Schematic diagram showing the structure of the drive assembly of the cleaning device according to an embodiment of the present disclosure;

[0035] Figure 6 Schematic diagram showing the structure of the connection mechanism of the cleaning device according to an embodiment of the present disclosure;

[0036] Figure 7 Exploded view showing the connection mechanism of the cleaning device according to an embodiment of the present disclosure;

[0037] Figure 8 Schematic diagram showing the structure of the cleaning system according to an embodiment of the present disclosure;

[0038] Figure 9 Front view showing the cleaning system according to an embodiment of the present disclosure;

[0039] Figure 10 Schematic diagram showing the structure of the base station of the cleaning system according to an embodiment of the present disclosure;

[0040] Figure 11 Bottom view showing the floor brush assembly of the cleaning device according to an embodiment of the present disclosure.

[0041] Explanation of reference numerals:

[0042] Cleaning system 1;

[0043] Cleaning device 100;

[0044] Body assembly 10; Main body 11; Sewage tank 12; Interface 121; Drain port 122; Handle 13; Docking space 14;

[0045] Floor brush assembly 20; housing 21; avoidance notch 21a; dirt suction port 211; scraping strip 212; negative pressure area 213; embedding hole 214; dirt suction pipe 22; cleaning member 23; drive wheel 24; drive assembly 25; drive motor 251; transmission mechanism 252; charging terminal 26;

[0046] Connecting mechanism 30; first connecting member 31; avoidance through-hole 31a; first rotating portion 311; annular sleeve 311a; second rotating portion 312; columnar connecting portion 312a; second connecting member 32; body connecting portion 321; rotating mating portion 322; stopping portion 33; fastener 34; baffle 35;

[0047] Base station 200;

[0048] First bearing portion 40; first supporting surface 41; accommodating groove 41a; charging contact 42;

[0049] Second bearing portion 50; second supporting surface 51; sewage discharge groove 51a; rolling mating surface 52;

[0050] First rotation axis L1; second rotation axis L2; first direction X; second direction Y. Detailed implementation manners

[0051] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0052] Figure 1 Shows a schematic structural diagram of the cleaning device 100 according to an embodiment of the present disclosure when the main body 11 is in the first position, Figure 2 Shows a schematic structural diagram of the cleaning device 100 according to an embodiment of the present disclosure when the main body 11 is in the second position, Figure 3 Shows Figure 1 The partial structural sectional view in. As Figures 1 to 3As shown in the figure, the cleaning device 100 provided by the first aspect embodiment of the present disclosure includes a body assembly 10, a floor brush assembly 20, and a connecting mechanism 30. Specifically, the body assembly 10 includes a main body 11 and a sewage tank 12, and the sewage tank 12 is arranged on the main body 11. The floor brush assembly 20 includes a housing 21, a sewage suction pipe 22, a cleaning member 23, and traveling wheels. A sewage suction port 211 is formed at the bottom of the housing 21. One end of the sewage suction pipe 22 is communicated with the sewage suction port 211, and the other end of the sewage suction pipe 22 extends out of the housing 21 and is communicated with the inside of the sewage tank 12. The cleaning member 23 is used for cleaning the surface to be cleaned, and the cleaning member 23 and the traveling wheels are arranged on the floor brush assembly 20 at intervals in the first direction X. The sewage tank 12 is arranged on the side of the main body 11 away from the cleaning member 23 in the first direction X. The sewage tank 12 has a bottom end adjacent to the floor brush assembly 20, and a sewage discharge port 122 communicating the inside and outside of the sewage tank 12 is formed at the bottom end. The connecting mechanism 30 is connected between the main body 11 and the housing 21, so that the main body 11 can rotate relative to the housing 21 between a first position and a second position around a first rotation axis L1, and the main body 11 is in a lying state when located at the second position. Among them, the connecting mechanism 30 is located between the part where the sewage suction pipe 22 extends out of the housing 21 and the cleaning member 23 in the first direction X.

[0053] In the embodiments of the present disclosure, the cleaning device 100 can be any device such as a floor washer, a sweeping robot, a handheld vacuum cleaner, a carpet cleaning machine, etc. In the following description of the present disclosure specification, the cleaning device 100 is taken as an example of a floor washer for description. It can be understood that a floor washer is a cleaning device 100 suitable for cleaning hard floors and capable of sucking up sewage and taking the sewage away from the site, and has the advantages of environmental protection, energy saving, high efficiency, etc.

[0054] Exemplarily, the body assembly 10 is movably connected to the floor brush assembly 20 through the connecting mechanism 30. Specifically, the body assembly 10 includes a main body 11 and a sewage tank 12 arranged on the main body 11. The main body 11 is rotatably connected to the housing 21 of the floor brush assembly 20 through the connecting mechanism 30 and can rotate relative to the housing 21 between a first position and a second position around a first rotation axis L1. Among them, the first position can be a position where the main body 11 is in an upright state or close to an upright state, for example, it can be the position where the main body 11 is located in Figure 1 the figure. The second position can be the position where the main body 11 is located when the cleaning device 100 performs the cleaning task of the surface to be cleaned, specifically, it can be the position where the main body 11 is in a lying state or close to a lying state, for example, the position where the main body 11 is located in Figure 2 the figure. Among them, the lying state can be understood as the state where the main body 11 is at an angle greater than or equal to 170 degrees and less than or equal to 180 degrees with respect to the advancing direction of the floor brush assembly 20.

[0055] More specifically, the first position may be the position of the main body 11 when the extension direction of the main body 11 is perpendicular or nearly perpendicular to the first direction X of the shell 21, and the second position may be the position of the main body 11 when the extension direction of the main body 11 is parallel or nearly parallel to the shell 21. The first direction X may be the forward direction or the backward direction of the floor brush assembly 20.

[0056] In a more specific example, a handle 13 is further provided at one end of the main body 11 away from the floor brush assembly 20, and the handle 13 is used for a user to hold. The user applies force to the handle 13 to maintain the main body 11 at a specific position relative to the housing 21 of the floor brush assembly 20, and drives the cleaning device 100 to move on the surface to be cleaned, thereby achieving regional cleaning of the surface to be cleaned.

[0057] Exemplarily, the cleaning device 100 includes a cleaning module, and the cleaning module may include a cleaning member 23 and a cleaning member driving unit arranged on the housing 21, and the cleaning member driving unit is connected to the cleaning member 23 in a transmission manner to drive the cleaning member 23 to rotate around its central axis, so as to clean the dirt on the surface to be cleaned by the rotating cleaning member 23. Among them, the cleaning member driving unit can specifically adopt a motor. The material of the outer peripheral wall of the cleaning member 23 can be set accordingly according to the properties of the surface to be cleaned and its corresponding cleaning requirements. For example, bristles can be arranged on the outer peripheral wall of the cleaning member 23, and when the surface to be cleaned is a smooth ground, the material of the bristles can specifically adopt flannel; for another example, when the surface to be cleaned is a rough ground or has stubborn stains, the material of the bristles can specifically adopt nylon. In addition, the material of the bristles can also be selected from polypropylene or metal wire, etc., which can be set accordingly according to the actual cleaning needs.

[0058] In some optional examples, the cleaning member 23 may be a roller brush. The roller brush is detachably disposed at the bottom of the housing 21, and the cleaning device 100 may include multiple roller brushes with different media on the peripheral wall, so that the multiple roller brushes have different cleaning properties. In this way, the user can select a roller brush with corresponding cleaning properties according to the properties of the surface to be cleaned and install it on the housing 21 to meet specific cleaning needs.

[0059] In the embodiment of the present disclosure, there is no specific limitation on the number of cleaning members 23 disposed on the bottom of the housing 21. For example, the bottom of the housing 21 may be provided with only one cleaning member 23, or may be provided with a plurality of cleaning members 23 arranged side by side.

[0060] In addition, the cleaning system 1 may further include a fluid supply module. The fluid supply module may include a clean water tank, a water pump, and a fluid dispenser. The clean water tank is used to store the cleaning liquid, which may be clean water or water added with a cleaning agent. The water pump is used to pump the cleaning liquid in the clean water tank to the fluid dispenser and evenly distribute it to the cleaning member 23 or the surface to be cleaned through the fluid dispenser, so as to soften the dirt on the surface to be cleaned and improve the cleaning effect.

[0061] Exemplarily, the cleaning device 100 may further include a dirt recovery module. The dirt recovery module may include a sewage tank 12, a dirt suction pipe 22, a dirt suction port 211, and a suction motor. The dirt suction port 211 is arranged at the bottom of the housing 21 of the floor brush assembly 20 adjacent to the cleaning member 23, and the dirt suction port 211 communicates the inside and the outside of the housing 21. A scraping strip 212 is arranged at the dirt suction port 211, and a negative pressure area 213 is formed by the gap between the scraping strip 212 and the cleaning member 23. The negative pressure area 213 communicates with the sewage tank 12 through the dirt suction pipe 22. The end of the scraping strip 212 is used to interfere with the surface to be cleaned. The suction motor is arranged inside the body assembly 10 and communicates with the negative pressure area 213. During the operation of the suction motor, a negative pressure is formed in the negative pressure area 213, so that the dirt separated from the cleaning member 23 is sucked through the dirt suction port 211 into the dirt suction pipe 22 and then into the sewage tank 12, thereby realizing the dirt recovery function of the cleaning device 100.

[0062] It can be understood that since the dirt suction port 211 is arranged on the housing 21 of the floor brush assembly 20 and the sewage tank 12 is arranged on the main body 11 of the body assembly 10, and the main body 11 and the housing 21 are movably connected, the dirt suction pipe 22 connected between the dirt suction port 211 and the sewage tank 12 itself must have a certain deformation ability to adapt to the relative position change between the main body 11 and the housing 21. In some alternative examples, the dirt suction pipe 22 may be a corrugated pipe with certain bending performance and telescopic performance. Thus, the dirt suction pipe 22 can better adapt to the layout space in the housing 21 and will not have direct hard contact with the traveling wheels, which is beneficial to further reducing the internal space of the housing 21, improving the structural compactness of the floor brush assembly 20, and thus being able to reduce the size of the floor brush assembly 20.

[0063] Exemplarily, the cleaning device 100 may further include a traveling module, and the traveling module includes traveling wheels and a driving assembly 25. The traveling wheels may include a driving wheel 24 drivingly connected to the driving assembly 25. The driving wheel 24 is disposed at the bottom of the housing 21 of the floor brush assembly 20 and is spaced apart from the cleaning member 23 in the first direction X. The driving assembly 25 is configured to drive the driving wheel 24 to rotate forward or backward, so as to drive the floor brush assembly 20 to move forward or backward. With such an arrangement, when the user drives the cleaning device 100 to move forward or backward, with the driving wheel 24 rotating in a direction consistent with the moving direction of the cleaning device 100, the driving difficulty of the user can be reduced, thereby achieving the purpose of assisting. It can be understood that when the floor brush assembly 20 is placed on the surface to be cleaned, the cleaning member 23 and the outer peripheral wall of the driving wheel 24 are both tangent to the surface to be cleaned.

[0064] In addition, the traveling wheels may further include driven wheels. There may be two driven wheels, which are respectively disposed on opposite sides of the driving wheel 24 and are used to assist in supporting the floor brush assembly 20, thereby improving the stability of the floor brush assembly 20 during traveling.

[0065] It should be noted that for certain specific usage scenarios of the cleaning device 100, such as for low spaces such as under the bed and under the cabinet, the cleaning device 100 cannot clean these low spaces when the main body 11 is in an inclined position, and the main body 11 needs to be placed in a flat or nearly flat state for cleaning. Based on this, when the second position is a flat position and the main body 11 is located at the second position relative to the housing 21, it is necessary to ensure as much as possible that the main body 11 can be in or close to a flat state.

[0066] In order to avoid interference of the sewage suction pipe 22 with the rotation between the main body 11 and the housing 21, in some specific examples, the sewage tank 12 may be disposed on a side of the main body 11 away from the cleaning member 23. The sewage tank 12 has a bottom end adjacent to the floor brush assembly 20, so that the part of the sewage suction pipe 22 extending outside the housing 21 is located on a side of the connecting mechanism 30 away from the cleaning member 23 in the first direction X, so that the connecting mechanism 30 is located between the part of the sewage suction pipe 22 extending outside the housing 21 and the cleaning member 23. With such an arrangement, by disposing the sewage suction pipe 22 and the sewage tank 12 on the same side of the main body 11, during the rotation of the sewage tank 12 with the main body 11, the sewage suction pipe 22 connected to the sewage tank 12 will not affect the connecting mechanism 30, thereby ensuring that there can be a large rotation range between the main body 11 and the housing 21. In addition, by disposing the sewage tank 12 on a side of the main body 11 away from the cleaning member 23 and the bottom end of the sewage tank 12 has a sewage discharge port 122, when the cleaning device 100 is placed on the base station, the sewage discharge port 122 can be docked with the base station, so as to discharge the dirt in the sewage tank 12.

[0067] Further, the connecting mechanism 30 connected between the main body 11 and the housing 21 is located on the side of the sewage tank 12 adjacent to the cleaning member 23 in the first direction X, and the connecting mechanism 30 is also located on the side of the part of the sewage suction pipe 22 extending outside the housing 21 adjacent to the cleaning member 23 in the first direction X. When the main body 11 rotates relative to the housing 21 to the second position, in order to reduce or even avoid interference between the sewage tank 12 and the surface to be cleaned, so as to ensure that the main body 11 can be in a large-angle inclination or even close to a lying state when in the second position, the position of the first rotation axis L1 needs to be as far away from the surface to be cleaned (i.e., upward) as possible and adjacent to the cleaning member 23 in the first direction X (i.e., forward). Based on this, the first rotation axis L1 is arranged on the side of the driving wheel 24 adjacent to the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the first rotation axis L1 and the driving wheel 24 in the first direction X.

[0068] Exemplarily, the cleaning device 100 may further include an energy supply module. The energy supply module may include a rechargeable battery, such as a lithium-ion battery or a nickel-cadmium battery. This battery can provide necessary electrical energy for the water pump, the suction motor and the driving assembly 25, so that the cleaning device 100 can be free from the restraint of wires and ensure that the floor washer can efficiently complete the cleaning task in an environment far from the socket.

[0069] In summary, for the cleaning device 100 according to the embodiments of the present disclosure, by arranging the sewage tank 12 on the side of the main body 11 away from the cleaning member 23, during the rotation of the sewage tank 12 with the main body 11, it is possible to avoid interference of the sewage suction pipe 22 with the rotation between the main body 11 and the housing 21, thereby ensuring that there can be a large rotation range between the main body 11 and the housing 21. Secondly, by arranging the sewage tank 12 on the side of the main body 11 away from the cleaning member 23 and the bottom end of the sewage tank 12 has a sewage discharge port 122, when the cleaning device 100 is placed on the base station, the sewage discharge port 122 can be docked with the base station, so as to discharge the dirt in the sewage tank 12, which is also beneficial to the docking and sewage discharge of the cleaning device 100 with the base station. Furthermore, by making the connecting mechanism 30 located between the part of the sewage suction pipe 22 extending outside the housing 21 and the cleaning member 23 in the first direction X, it is possible to move the position of the first rotation axis L1 forward and upward in the first direction X, so as to reduce or even avoid interference between the sewage tank 12 and the surface to be cleaned when the main body 11 rotates to the second position, ensure that the main body 11 can be in a lying state when in the second position, and further meet the cleaning requirements for low spaces and improve the user experience.

[0070] In one embodiment, such as Figure 1As shown, there is a docking space 14 between the sewage outlet 122 and the floor brush assembly 20. The part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the docking space 14 in the first direction X. The sewage outlet 122 is arranged on the side of the part of the sewage suction pipe 22 extending outside the housing 21 away from the connecting mechanism 30.

[0071] Exemplarily, the docking space 14 can be jointly defined by the bottom of the sewage tank 12 or the bottom of the main body 11 carrying the sewage tank 12, the top of the housing 21, and the rear side wall of the part of the sewage suction pipe 22 extending outside the housing 21. Among them, when the cleaning device 100 is placed on the base station, in order to prevent the sewage suction pipe 22 from interfering with the docking of the sewage outlet 122 and the base station, the sewage outlet 122 can be arranged on the side of the part of the sewage suction pipe 22 extending outside the housing 21 away from the connecting mechanism 30.

[0072] It can be understood that the connecting mechanism 30 is connected to the bottom of the main body 11. Since the sewage tank 12 is located on the side of the main body 11 away from the cleaning member 23 in the first direction X, the sewage outlet 122 at the bottom end of the sewage tank 12 is also located on the side of the connecting mechanism 30 away from the cleaning member 23 in the first direction X. Further, in order to ensure the compactness and integration of the cleaning device 100, the part of the sewage suction pipe 22 connected to the sewage tank 12 is arranged adjacent to the connecting mechanism 30 in the first direction X. Correspondingly, the interface 121 at the bottom of the sewage tank 12 for connecting to the sewage suction pipe 22 is also arranged adjacent to the connecting mechanism 30 in the first direction X. In some specific examples, the distance between the interface 121 and the connecting mechanism 30 in the first direction X is less than the distance between the interface 121 and the rear side edge of the body assembly 10. Among them, the rear side edge of the body assembly 10 can be the outer contour edge of the sewage tank 12 arranged at the rear side of the main body 11 away from the main body 11.

[0073] It should be noted that the cleaning system 1 of the cleaning device 100 adopting the embodiment of the present disclosure further includes a base station 200 adapted to the cleaning device 100, and the base station 200 is used for placing the cleaning device 100. More specifically, the base station 200 has a sewage receiving part for docking with the sewage tank 12, and the sewage receiving part is provided with a sewage discharge groove for docking with the sewage outlet 122, and the sewage discharge groove is used for receiving the sewage discharged from the sewage tank 12. In order to ensure that the sewage tank 12 can be docked with the sewage receiving part and the sewage outlet 122 can be docked with the sewage discharge groove without interference, the sewage outlet 122 is adapted to be arranged adjacent to the edge of the bottom end of the sewage tank 12 on the side away from the connecting mechanism 30, so as to prevent the sewage suction pipe 22 from interfering with the docking of the sewage outlet 122 and the sewage discharge groove.

[0074] In one embodiment, the traveling wheels include a drive wheel 24 which is located on the side of the connecting mechanism 30 away from the cleaning member 23 in the first direction X, and the portion of the dirt suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the drive wheel 24 in the first direction X.

[0075] It should be noted that for the floor washer in the related art, usually a drive wheel is respectively arranged on both sides of the bottom of the floor brush to drive the floor brush to move, and the adapter connected between the floor brush and the main body usually adjacent to the rear side of the floor brush and centered in the width direction of the floor brush. When the floor washer needs to turn, the distance between the drive wheels on both sides and the rotation center of the whole floor washer is relatively large. Since the drive wheels are connected to the transmission mechanism, a certain force needs to be applied to the drive wheels to change their state from stationary to rotating. And because the two drive wheels are at a certain distance from the rotation center of the whole floor washer, it makes the turning of the floor washer more difficult.

[0076] Based on the above defects existing in the floor washer in the related art, in the embodiments of the present disclosure, the number of the drive wheels 24 of the cleaning device 100 can be one and centered on the side of the housing 21 away from the cleaning member 23, so as to reduce the distance between the drive wheel 24 and the rotation center line of the whole cleaning device 100, and even the position of the drive wheel 24 can be on the rotation center line of the whole cleaning device 100, thereby reducing the turning force of the cleaning device 100 and facilitating the user to turn easily during use.

[0077] However, after the drive wheel 24 is centered, if the connecting mechanism 30 adopts the same structure and setting method as the adapter in the related art, it will cause the connecting mechanism 30 to interfere with the drive wheel 24 with a high probability when the body assembly 10 tilts backward, especially when the sewage tank 12 is arranged at the rear side of the main body 11, the sewage tank 12 will also interfere with the surface to be cleaned when the body assembly 10 rotates to the lying position. Thus, the rotation range of the main body 11 will be limited, which is not conducive to achieving a large-angle tilt or even rotating to the lying state.

[0078] Based on the above considerations, for the cleaning device 100 according to the embodiments of the present disclosure, by arranging the connecting mechanism 30 on the side of the driving wheel 24 adjacent to the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction X, the position of the first rotation axis L1 relative to the housing 21 can be set to be forward and upward, so that when the main body 11 rotates to the second position, the interference between the connecting mechanism 30 and the driving wheel 24 can be reduced or even avoided, and the interference between the sewage tank 12 arranged on the main body 11 and the surface to be cleaned can also be reduced or even avoided, thereby increasing the rotation range of the body assembly 10 relative to the housing 21, which is beneficial to realizing that the main body 11 can be tilted at a large angle or even in or close to a lying position in the case of the second position, so as to meet the cleaning requirements for other special scenarios such as low spaces. In addition, by arranging the connecting mechanism 30 and the driving wheel 24 at intervals in the first direction X, the space occupied by the connecting mechanism 30 and the driving wheel 24 in the vertical direction can be reduced, thereby improving the integration degree of the floor brush assembly 20, which is beneficial to reducing the external dimension of the floor brush assembly 20. It should be noted that even if the driving wheel 24 is arranged in the same way as that of the floor washer in the related art, that is, the number of driving wheels 24 is two and they are respectively arranged on the opposite sides of the bottom of the housing 21, by arranging the connecting mechanism 30 on the side of the driving wheel 24 adjacent to the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction X, the rotation range of the main body 11 can also be increased, so as to increase the backward tilt angle of the main body 11 or even enable the main body 11 to rotate to a lying state, thereby meeting the cleaning requirements for low spaces.

[0079] In addition, in another embodiment, if the cleaning device 100 can only work in the following third position (the main body 11 is tilted) and cannot work in the second position (the main body 11 is lying flat), the cleaning device 100 can also be arranged such that the driving wheel 24 is located on the side away from the cleaning member 23 of the connecting mechanism 30 in the first direction, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction. The cleaning device 100 can achieve easy steering and the connecting mechanism 30 does not interfere with the driving wheel 24 during the backward tilting rotation of the main body 11. In one implementation manner, the first rotation axis L1 is parallel to the second direction Y, and the second direction Y is perpendicular to the first direction X; wherein, the rotation center of the driving wheel 24 is located on the side away from the cleaning member 23 of the first rotation axis L1 in the first direction X.

[0080] Exemplarily, the first direction X can be the forward or backward direction of the floor brush assembly 20, and the second direction Y can be the horizontal direction perpendicular to the forward or backward direction of the floor brush assembly 20. The first rotation axis L1 is parallel to the second direction Y, so that the main body 11 can rotate forward or backward relative to the housing 21 in the upright state. The drive wheel 24 is used to drive the floor brush assembly 20 to move forward or backward. Therefore, the rotation axis of the drive wheel 24 is parallel to the second direction Y. In the first direction X, the drive wheel 24 is located on the side of the first rotation axis L1 away from the cleaning member 23, that is, the drive wheel 24 is arranged behind the first rotation axis L1 relative to the first rotation axis L1.

[0081] With such a setting, the body assembly 10 can rotate forward or backward relative to the floor brush assembly 20, so as to adjust the position of the body assembly 10. Moreover, by setting the rotation center of the drive wheel 24 behind the first rotation axis L1, the first rotation axis L1 can be further moved forward, further increasing the rotation range of the body assembly 10, which is beneficial for the main body 11 to rotate to the lying state when it is in the second position.

[0082] Figure 4 The rear view of the cleaning device 100 according to an embodiment of the present disclosure is shown, as Figure 4 shown. In one embodiment, the distance between the first rotation axis L1 and the surface to be cleaned is D1, and the distance between the rotation center of the drive wheel 24 and the surface to be cleaned is D2, and D1 > D2 is satisfied.

[0083] Furthermore, D1 is greater than or equal to the diameter of the drive wheel 24, that is, D1 ≥ 2D2, so that even when the body assembly 10 is in the lying position, the first rotation axis L1 is still above the drive wheel 24, and the connecting mechanism 30 will not interfere with the drive wheel 24, realizing the lying cleaning function of the cleaning device 100.

[0084] In this embodiment, the specific values of D1 and D2 are not specifically limited, as long as D1 > D2 is satisfied.

[0085] It should be noted that the sewage suction port 211 is arranged at the bottom of the housing 21 adjacent to the cleaning member 23. The connecting mechanism 30 is located on the side of the sewage suction port 211 away from the cleaning member 23 in the first direction X. The bottom of the main body 11 is rotatably connected to the housing 21 through the connecting mechanism 30, and the sewage tank 12 is located on the side of the main body 11 away from the cleaning member 23. Based on this, the part of the sewage suction pipe 22 in the housing 21 connected between the sewage tank 12 and the sewage suction port 211 is located below the connecting mechanism 30.

[0086] Through the above embodiments, the first rotation axis L1 can be located above the rotation center of the drive wheel 24, thereby increasing the height of the first rotation axis L1. Thus, on the one hand, sufficient space can be reserved below the connecting mechanism 30 to enable the sewage suction pipe 22 to pass through the space below the connecting mechanism 30, so as to meet the arrangement of the sewage suction pipe 22 in the housing 21. On the other hand, moving the first rotation axis L1 upward can further reduce the interference between the sewage tank 12 and the surface to be cleaned when the main body 11 is in the second position, thereby increasing the rotation range between the main body 11 and the housing 21.

[0087] Optionally, the distance D1 between the first rotation axis L1 and the surface to be cleaned is greater than the diameter of the drive wheel 24. With such a setting, the installation height of the first rotation axis L1 can be further increased, thereby further moving up the installation position of the connecting mechanism 30 on the housing 21. Thus, when the main body 11 rotates to the second position, the interference between the sewage tank 12 and the surface to be cleaned can be further reduced, ensuring that the main body 11 can rotate to a lying position.

[0088] In one embodiment, when the main body 11 is in the second position, the first rotation axis L1 is located on the side of the sewage suction pipe 22 away from the surface to be cleaned.

[0089] Exemplarily, the second position where the main body 11 is located may be the position where the extending direction of the main body 11 is parallel to the surface to be cleaned or has a small included angle (for example, greater than 0 degrees and less than 15 degrees) with the surface to be cleaned. When the main body 11 is in the second position, the sewage tank 12 is located on the side of the main body 11 adjacent to the surface to be cleaned in the vertical direction, and the connecting mechanism 30 connected to the main body 11 is located on the side of the sewage tank 12 away from the surface to be cleaned. One end of the sewage suction pipe 22 is connected to the sewage suction port 211 of the housing 21, and the other end is connected to the sewage tank 12. Thus, the sewage suction pipe 22 is generally located below the connecting mechanism 30, and the first rotation axis L1 is located above the sewage suction pipe 22.

[0090] It can be understood that when the main body 11 is in the second position, by setting the first rotation axis L1 above the sewage suction pipe 22, the height of the first rotation axis L1 can be further increased, so that the main body 11 can be close to or even in a lying state when in the second position.

[0091] In one embodiment, the main body 11 can be rotated relative to the housing 21 to a third position, and the third position is located between the first position and the second position; when the cleaning device 100 is in a cleaning state, the main body 11 is located in the third position or the second position.

[0092] Exemplarily, when the main body 11 is located at the first position, it can be in an upright state, that is, the extending direction of the main body 11 is perpendicular or nearly perpendicular to the surface to be cleaned. At this time, the cleaning device 100 is in a shutdown state or a suspended cleaning task state; when the main body 11 is in the second position, it can be in a lying state, that is, the extending direction of the main body 11 is parallel or nearly parallel to the surface to be cleaned.

[0093] It can be understood that the first position and the second position are two extreme positions where the main body 11 rotates relative to the housing 21, and the main body 11 can rotate relative to the housing 21 to any position between the first position and the second position. Among them, there is a third position between the first position and the second position. When the main body 11 is in the third position, there is a certain included angle between its extending direction and the surface to be cleaned, and the range of the included angle can be 45 degrees to 75 degrees. When the cleaning device 100 is in the cleaning state, the cleaning module, the fluid supply module, the dirt recovery module, and the assisting module can all be in an operating state to realize the cleaning function of the cleaning device 100. Among them, when the cleaning device 100 is in the cleaning state, the main body 11 can be located at the third position, that is, in an inclined state, or can be located at the second position, that is, in a lying state or nearly in a lying state.

[0094] Through the above embodiments, when the cleaning device 100 is in the cleaning state, the rotation angle range of the main body 11 can be increased, which can not only meet the requirement of driving the cleaning device 100 to move and cleaning the ordinary ground in the standing posture of the user, but also meet the requirement of driving the cleaning device 100 to move and cleaning the low space in the squatting or bending posture of the user, thus meeting different usage requirements of the user and improving the user experience.

[0095] In one embodiment, as Figure 2 shown, when the main body 11 is located at the second position, the projection distance of the connection line between the first rotation axis L1 and the edge on the side far from the main body 11 at the bottom end of the sewage tank 12 in the normal direction of the surface to be cleaned is D3, and the distance D1 between the first rotation axis L1 and the surface to be cleaned, and D3≤D1 is satisfied.

[0096] Exemplarily, when the main body 11 is located at the second position, it is in a lying state, that is, the extending direction of the main body 11 is parallel to the surface to be cleaned or forms a small included angle.

[0097] It can be understood that when the main body 11 is in the second position, the maximum rotation radius of the bottom end of the sewage tank 12 relative to the first rotation axis L1 is the connection line between the edge of the bottom end of the sewage tank 12 on the side far from the main body 11 and the first rotation axis L1. By setting the projection distance D3 of the connection line between the edge of the bottom end of the sewage tank 12 on the side far from the main body 11 and the first rotation axis L1 in the normal direction of the surface to be cleaned to be less than or equal to the distance D1 between the first rotation axis L1 and the surface to be cleaned, it is possible to avoid interference between the edge of the bottom end of the sewage tank 12 on the side far from the main body 11 and the surface to be cleaned when the main body 11 is in the second position, thereby ensuring that the main body 11 can be in a lying state when in the second position.

[0098] In one embodiment, as Figure 1 shown, the bottom end of the sewage tank 12 has an interface 121 connected to the sewage suction pipe 22. The distance between the center point of the interface 121 and the edge of the bottom end of the sewage tank 12 on the side far from the main body 11 is D4, and the distance between the center point of the interface 121 and the edge of the bottom end of the sewage tank 12 on the side adjacent to the main body 11 is D5, and 1 / 4 ≤ D5 / D4 ≤ 2 / 3 is satisfied.

[0099] Preferably, the ratio of D5 to D4 can be 3 / 7.

[0100] Through the above embodiment, the interface 121 can be set as close as possible to the connecting mechanism 30 in the first direction X, so as to leave sufficient area at the bottom end of the sewage tank 12 for docking with the sewage receiving part of the base station 200, and at the same time reserve sufficient space for the arrangement of the sewage discharge port 122.

[0101] In one embodiment, as Figure 3 shown, an embedding hole 214 is opened at the bottom of the housing 21 on the side far from the cleaning member 23. The driving wheel 24 is arranged in the embedding hole 214, and at least part of the driving wheel 24 is located inside the housing 21.

[0102] Exemplarily, the embedding hole 214 penetrating through is opened at the bottom of the housing 21, and the embedding hole 214 communicates with the inside and outside of the housing 21. The driving wheel 24 is rotatably penetrated through the embedding hole 214 so that a part of the driving wheel 24 is located inside the housing 21 and the other part is exposed outside the housing 21. Among them, the ratio of the dimension of the part of the driving wheel 24 located inside the housing 21 in the vertical direction to the dimension of the part of the driving wheel 24 exposed outside the housing 21 in the vertical direction can be 1 / 4 to 4.

[0103] Through the above embodiments, compared with directly disposing the driving wheel 24 at the bottom of the housing 21, the height dimension of the portion of the driving wheel 24 exposed outside the housing 21 can be reduced, thereby reducing the overall height of the floor brush assembly 20, which is beneficial for the floor brush assembly 20 to enter a lower space, and further increasing the applicable range of the cleaning device 100.

[0104] Figure 5 The structural schematic diagram of the driving assembly 25 of the cleaning device 100 according to the embodiment of the present disclosure is shown as Figure 5 As shown, in one embodiment, the cleaning device 100 further includes a driving assembly 25 disposed inside the housing 21. The driving assembly 25 includes a driving motor 251 and a transmission mechanism 252. The output shaft of the driving motor 251 is drivingly connected to the input end of the transmission mechanism 252, and the output end of the transmission mechanism 252 is drivingly connected to the driving wheel 24. Wherein, when the outer peripheral walls of the cleaning member 23 and the driving wheel 24 are respectively tangent to the surface to be cleaned, the distance between the output shaft of the driving motor 251 and the surface to be cleaned is D6, and the distance between the rotation center of the driving wheel 24 and the surface to be cleaned is D2, and D6 > D2 is satisfied.

[0105] In the embodiment of the present disclosure, the model and specifications of the driving motor 251 are not specifically limited; the transmission mechanism 252 can adopt a reducer in any form, and the transmission ratio of the reducer is also not specifically limited.

[0106] Exemplarily, the output shaft of the driving motor 251 is coaxially disposed with the input end of the reducer, the output end of the reducer is eccentrically disposed with the input end of the reducer, and the output end of the reducer is coaxially disposed with the central axis of the driving wheel 24. In addition, the central axis of the driving motor 251 and the central axis of the reducer can be coaxially disposed, and the outer diameter of the driving motor 251 is substantially the same as the outer diameter of the reducer, thereby improving the integration degree of the driving motor 251 and the reducer. The central axis of the reducer and the central axis of the driving wheel 24 can be eccentrically disposed, and the top of the reducer is substantially flush with the top of the driving wheel 24. Wherein, the driving motor 251 and the reducer can be jointly installed at the bottom of the housing 21.

[0107] By adopting the above-described embodiments, the driving wheel 24 is eccentrically arranged relative to the driving motor 251 and the transmission mechanism 252. On the one hand, it is beneficial to the miniaturization of the driving wheel 24. When the driving wheel 24 is miniaturized, the diameter of the driving wheel 24 becomes smaller. If the driving motor 251 is still concentrically arranged with the driving wheel 24, the distance between the driving motor 251 and the ground will synchronously become smaller. Since the driving motor 251 is arranged in the floor brush housing 21, the floor brush housing 21 will not have enough space to install the driving motor 251, or the distance between the bottom surface of the floor brush housing 21 and the ground will be too small, and the height of the driving wheel 24 protruding from the bottom surface of the floor brush housing 21 will be too small, which is not conducive to the movement of the cleaning device 100. Setting the central axis of the output shaft of the driving motor 251 higher than the rotation center of the driving wheel 24 can ensure that the part of the miniaturized driving wheel 24 protruding from the embedding hole 214 has a certain height, thereby ensuring that there is a certain height between the bottom of the housing 21 and the surface to be cleaned, and ensuring the movement reliability of the floor brush assembly 20; on the other hand, it can reduce the occupation of the height space by the driving wheel 24 inside the housing 21, which is beneficial to improving the structural compactness inside the housing 21, and is also beneficial to reducing the height dimension of the housing 21.

[0108] Figure 6 FIG. shows a schematic structural view of the connecting mechanism 30 of the cleaning device 100 according to an embodiment of the present disclosure. Figure 7 FIG. shows an exploded view of the connecting mechanism 30 of the cleaning device 100 according to an embodiment of the present disclosure. As Figure 6 and Figure 7 shown, in one embodiment, the connecting mechanism 30 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 is rotatably connected to the housing 21, and the first connecting member 31 is rotatable relative to the housing 21 about a first rotation axis L1. The second connecting member 32 is rotatably connected to the first connecting member 31, and the second connecting member 32 is rotatable relative to the first connecting member 31 about a second rotation axis L2. The second connecting member 32 is connected to the main body 11; wherein, the second rotation axis L2 is perpendicular to the first direction X, and the second connecting member 32 is located above the first connecting member 31.

[0109] Exemplarily, the first connecting member 31 includes two first rotating portions 311 oppositely arranged in the second direction Y. The two first rotating portions 311 respectively have annular sleeves 311a extending along the second direction Y. The two annular sleeves 311a are respectively used for the corresponding rotating shafts on the housing 21 to be inserted therein to form a rotating fit. The first connecting member 31 further includes a second rotating portion 312 connected between the two first rotating portions 311. The second rotating portion 312 has a columnar connecting portion 312a, and the columnar connecting portion 312 is perpendicular to the second rotating portion 312. The second connecting member 32 includes a body connecting portion 321 and a rotating fit portion 322. The body connecting portion 321 is connected to the rotating fit portion 322, and the included angle between the extending directions of the two is an acute angle. The body connecting portion 321 is used for connecting with the main body 11. The rotating fit portion 322 is provided with a rotating fit hole for the columnar connecting portion 312a to be inserted therein to form a rotating fit therewith. In addition, the connecting mechanism 30 further includes a stop portion 33, a fastener 34, and a baffle 35. The stop portion 33 is arranged on the side of the rotating fit portion 322 away from the first connecting member 31, and the stop portion 33 is sleeved with the rotating fit portion 322 and fixedly connected through the fastener 34. The baffle 35 is detachably arranged on the rotating fit portion 322 and covers the stop portion 33.

[0110] In some alternative examples, an avoidance through-hole 31a is provided at the bottom end of the first connecting member 31 for avoiding the sewage suction pipe 22 passing through the lower end of the first connecting member 31, so that the two ends of the sewage suction pipe 22 can be respectively connected to the sewage tank 12 and the sewage suction port 211 located on the opposite sides of the first connecting member 31. With such an arrangement, the compactness between the connecting mechanism 30 and the sewage suction pipe 22 can be improved.

[0111] According to the above embodiments, through the rotating fit between the first connecting member 31 and the housing 21, the first connecting member 31 can rotate relative to the housing 21 around the first rotation axis L1, and through the rotating fit between the second connecting member 32 and the first connecting member 31, the second connecting member 32 can rotate relative to the first connecting member 31 around the second rotation axis L2. Thus, by connecting the floor brush assembly 20 and the body assembly 10 through the connecting mechanism 30, the body assembly 10 can rotate relative to the floor brush assembly 20 around the first rotation axis L1 or the second rotation axis L2. Therefore, during the process of the user using the cleaning device 100, the posture of the body assembly 10 can be conveniently adjusted, which is beneficial to improving the user's usage convenience.

[0112] In one embodiment, when the main body 11 is in the first position, the included angle between the extending direction of the first connecting member 31 and the housing 21 is an acute angle.

[0113] Exemplarily, when the main body 11 is in the first position, it is in an upright state. The body connection portion 321 of the second connecting member 32 is connected to the bottom of the main body 11, and the extending direction of the second connecting member 32 is substantially horizontal. The rotating mating portion 322 connected to the body connection portion 321 extends obliquely downward in a direction away from the cleaning member 23. The first connecting member 31 is adapted to and fits with the rotating mating portion 322, and thus also extends obliquely downward in a direction away from the cleaning member 23, so that the included angle between the extending direction of the first connecting member 31 and the advancing direction of the floor brush assembly 20 is an acute angle.

[0114] Through the above-described embodiment, when the main body 11 rotates to the second position, the first connecting member 31 can extend obliquely upward in a direction away from the first rotation axis L1, thereby reducing the occupation of the space on the side of the main body 11 adjacent to the surface to be cleaned, enabling the side of the main body 11 adjacent to the surface to be cleaned to have sufficient space to accommodate the sewage tank 12, and further reducing or even avoiding interference between the sewage tank 12 and the surface to be cleaned, ensuring that the main body 11 can be tilted at a large angle. In addition, in the upright state, the included angle between the extending direction of the first connecting member 31 and the housing 21 is an acute angle, which also enables the connecting mechanism 30 to have a larger rotation range in subsequent rotations, facilitating the large-angle tilt of the main body 11.

[0115] As Figure 3 and Figure 4 shown, in one embodiment, an avoidance notch 21a is formed at the top of the housing 21, and the avoidance notch 21a extends to the side of the top of the housing 21 away from the cleaning member 23 in the first direction X, and the connecting mechanism 30 passes through the avoidance notch 21a and is movably connected to the housing 21.

[0116] Through the above-described embodiment, it is possible to avoid interference of the top of the housing 21 with the rotation of the main body 11, thereby ensuring that the main body 11 has a relatively large rotation range relative to the housing 21. In addition, when the main body 11 is in the first position, the connecting mechanism 30 abuts against the inner front edge of the avoidance notch 21a. Thus, the main body 11 can be limited by the avoidance notch 21a to prevent the main body 11 from tipping over on the side facing the advancing direction of the floor brush assembly 20.

[0117] Optionally, as Figure 3 shown, the traveling wheels include drive wheels 24, and the avoidance notch 21a extends above the drive wheels 24. When the main body 11 is in the second position, the portion of the sewage suction pipe 22 above the drive wheels 24 is received in the avoidance notch 21a. By providing the avoidance notch 21a on the housing 21, when the main body 11 is in a lying state, the avoidance notch 21a can receive the sewage suction pipe, facilitating the main body 11 to lie flat.

[0118] With such an arrangement, a reasonable layout of the sewage suction pipe 22 and the drive wheel 24 can be achieved inside the housing 21, making full use of the height space inside the housing 21, thereby improving the structural compactness of the floor brush assembly 20 and facilitating the reduction of the external dimensions of the floor brush assembly 20.

[0119] In one embodiment, the traveling wheel includes a drive wheel 24. The drive wheel 24 is disposed on a side of the housing 21 away from the cleaning member 23. The drive wheel 24 is centrally disposed at the bottom of the housing 21 in the second direction Y, that is, the drive wheel 24 is located on a side of the housing 21 away from the cleaning member 23 and is centrally disposed, and the connecting mechanism 30 is centrally disposed relative to the housing 21 in the second direction Y. Among them, the number of drive wheels 24 can be one.

[0120] In other embodiments, the drive wheel 24 does not need to be disposed on the housing 21 and can also be disposed behind the housing 21, that is, the drive wheel 24 is disposed at one end of the floor brush assembly 20 away from the cleaning member 23 and is centrally disposed.

[0121] It should be noted that the drive wheel 24 in the above embodiments is one. However, in other embodiments, the centrally disposed drive wheel 24 is not limited to one, and there can also be two, as long as the two drive wheels are centrally located on the floor brush assembly 20.

[0122] Through the above embodiments, the occupied space of the drive wheel 24 on the housing 21 is saved, so that the housing 21 can leave more space to accommodate other components. For example, the water tank that is usually disposed on the main body 11 in the related art can be integrally disposed inside the housing 21. Thus, the weight of the main body 11 can be reduced, making the operation of the user more convenient. Moreover, by centrally disposing the connecting mechanism 30 relative to the housing 21 in the second direction Y, the force exerted by the main body 11 on the housing 21 through the connecting mechanism 30 can be made more balanced, improving the operation convenience of the user.

[0123] The second aspect of the present disclosure also provides a cleaning device 100. As Figures 1 to 3As shown, the cleaning device 100 includes a body assembly 10, a floor brush assembly 20 and a connecting structure. Specifically, the body assembly 10 includes a main body 11 and a sewage tank 12, and the sewage tank 12 is arranged on the main body 11. The floor brush assembly 20 includes a shell 21, a sewage suction pipe 22, a cleaning member 23 and a driving wheel 24. A sewage suction port 211 is provided at the bottom of the shell 21, one end of the sewage suction pipe 22 is connected to the sewage suction port 211, and the other end of the sewage suction pipe 22 extends to the outside of the shell 21 and is connected to the inside of the sewage tank 12. The cleaning member 23 is used to clean the surface to be cleaned, and the cleaning member 23 and the driving wheel 24 are arranged at intervals at the bottom of the shell 21 in the first direction X. The connecting mechanism 30 is connected between the main body 11 and the shell 21, so that the main body 11 can rotate relative to the shell 21 around the first rotation axis L1 between a first position and a second position. The driving wheel 24 is located on a side of the connecting mechanism 30 away from the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending to the outside of the shell 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction X.

[0124] It should be noted that in the related art, a floor scrubber is usually provided with a driving wheel on both sides of the bottom of the floor brush to drive the floor brush to move, and the adapter connected between the floor brush and the main body is usually adjacent to the rear side of the floor brush and centered in the width direction of the floor brush. When the floor scrubber needs to turn, the driving wheels on both sides are far away from the rotation center of the entire floor scrubber. Since the driving wheels are connected to the transmission mechanism, a certain force needs to be applied to the driving wheels to change the driving wheels from a stationary state to a rotating state. In addition, since the two driving wheels are at a certain distance from the rotation center of the entire floor scrubber, turning the floor scrubber is more difficult.

[0125] Based on the above-mentioned defects of the floor scrubbers in the related art, in the embodiment of the present disclosure, the number of the driving wheel 24 of the cleaning device 100 can be one and it can be centrally arranged at the bottom of the shell 21, thereby reducing the distance between the driving wheel 24 and the rotation centerline of the cleaning device 100 as a whole, and even the position of the driving wheel 24 can be on the rotation centerline of the cleaning device 100 as a whole, thereby reducing the steering force of the cleaning device 100, making it easier for the user to turn when using it.

[0126] However, after the driving wheel 24 is centrally arranged, if the connecting mechanism 30 adopts the same structure and arrangement as the adapter in the related art, the connecting mechanism 30 will most likely interfere with the driving wheel 24 when the machine assembly 10 tilts backwards, especially when the sewage tank 12 is arranged at the rear side of the main body 11, the sewage tank 12 will also interfere with the surface to be cleaned when the machine assembly 10 rotates to the flat position. As a result, the rotation range of the main body 11 will be limited, which is not conducive to achieving a large angle tilt or even rotating to a flat position.

[0127] Based on the above considerations, for the cleaning device 100 according to the embodiments of the present disclosure, by arranging the connecting mechanism 30 on the side of the driving wheel 24 adjacent to the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction X, the position of the first rotation axis L1 relative to the housing 21 can be set to be forward and upward. Thus, when the main body 11 rotates to the second position, the interference between the connecting mechanism 30 and the driving wheel 24 can be reduced or even avoided, and the interference between the sewage tank 12 arranged on the main body 11 and the surface to be cleaned can also be reduced or even avoided. Thereby, the rotation range of the body assembly 10 relative to the housing 21 is increased, which is beneficial to enabling the main body 11 to be in or close to a lying position when in the second position, so as to meet the cleaning requirements for other special scenarios such as low spaces. In addition, by arranging the connecting mechanism 30 and the driving wheel 24 at intervals in the first direction X, the space occupied by the connecting mechanism 30 and the driving wheel 24 in the vertical direction can be reduced, thereby improving the integration degree of the floor brush assembly 20, which is beneficial to reducing the external dimension of the floor brush assembly 20.

[0128] It should be noted that even if the driving wheel 24 is arranged in the same way as that in the related art floor washer, that is, the number of driving wheels 24 is two and they are respectively arranged on the opposite sides of the bottom of the housing 21, for the cleaning device 100, by arranging the connecting mechanism 30 on the side of the driving wheel 24 adjacent to the cleaning member 23 in the first direction X, and the part of the sewage suction pipe 22 extending outside the housing 21 is located between the connecting mechanism 30 and the driving wheel 24 in the first direction X, the rotation range of the main body 11 can be increased to a certain extent, thereby increasing the backward tilting angle of the main body 11 or even enabling the main body 11 to rotate to a lying state, so as to meet the cleaning requirements for low spaces.

[0129] In one embodiment, the projections of the connecting mechanism 30, the sewage suction pipe 22, and the driving wheel 24 overlap in the first direction X. Further, the center line of the connecting mechanism 30 in the first direction X passes through the center of the sewage suction pipe 22 and the rotation center of the driving wheel 24, that is, the center line of the connecting mechanism 30 in the first direction X, the center line of the sewage suction pipe 22, and the center line of the driving wheel 24 coincide and are located on the center line of the floor brush assembly 20 in the first direction X, reducing the user's steering operation force and facilitating the user to turn easily during use.

[0130] In addition, other components of the cleaning device 100 according to the second aspect embodiments of the present disclosure can adopt the same or similar design as the cleaning device 100 according to the first aspect embodiments of the present disclosure above, which will not be elaborated here.

[0131] The third aspect embodiments of the present disclosure also provide a cleaning system 1. Figure 8The structural schematic diagram of the cleaning system 1 according to an embodiment of the present disclosure is shown. Figure 9 The front view of the cleaning system 1 according to an embodiment of the present disclosure is shown. Figure 10 The structural schematic diagram of the base station 200 of the cleaning system 1 according to an embodiment of the present disclosure is shown. As Figures 8 to 10 shown, the cleaning system 1 according to an embodiment of the present disclosure includes a base station 200 and a cleaning device 100 according to any one of the above embodiments of the present disclosure. The cleaning device 100 can be detachably placed on the base station 200.

[0132] In an embodiment of the present disclosure, the base station 200 can not only be used to place the cleaning device 100, but also integrate functions such as charging, cleaning, and drying the cleaning device 100.

[0133] According to the cleaning system 1 of the embodiments of the present disclosure, by adopting the cleaning device 100 of the above embodiments of the present disclosure, various usage requirements of users can be met. For example, the cleaning device 100 can achieve the cleaning function when the main body 11 is in a lying state, and the floor brush assembly 20 has a high degree of integration, which is beneficial to the external dimensions of the cleaning device 100.

[0134] In one embodiment, the base station 200 has a first bearing portion 40 and a second bearing portion 50. The first bearing portion 40 is used to bear the floor brush assembly 20 and has a first support surface 41 for bearing the floor brush assembly 20. The first bearing portion 40 is provided with a receiving groove 41a for accommodating the driving wheel 24. The second bearing portion 50 is used to dock with the sewage discharge port 122 of the sewage tank 12. The second bearing portion 50 has a sewage discharge groove 51a for docking with the sewage discharge port 122 of the sewage tank 12. Among them, the receiving groove 41a is located within the range of the orthographic projection of the second bearing portion 50 on the first support surface 41.

[0135] Exemplarily, the base station 200 has a first bearing portion 40 and a second bearing portion 50, and the first bearing portion 40 is adjacently arranged with the second bearing portion 50. The first bearing portion 40 has a first support surface 41 for supporting the floor brush assembly 20, and a receiving groove 41a is formed by being recessed downward in the first support surface 41. When the floor brush assembly 20 is carried on the first bearing portion 40, the driving wheel 24 located at the bottom of the floor brush assembly 20 is received in the receiving groove 41a. The second bearing portion 50 has a second support surface 51 for docking with the body assembly 10, and a sewage discharge groove 51a is formed in the second support surface 51 for docking with the sewage discharge port 122 at the bottom of the sewage tank 12. Wherein, when the cleaning device 100 is placed on the base station 200, the main body 11 is located at a first position relative to the housing 21 and is in an upright state. Thus, the bottom height of the body assembly 10 is greater than the bottom height of the floor brush assembly 20. Correspondingly, the height of the first support surface 41 of the first bearing portion 40 is less than the height of the second support surface 51 of the second bearing portion 50, so that the cleaning device 100 supported on the first support surface 41 and the second support surface 51 can be in an upright state.

[0136] It should be noted that when the body assembly 10 is in an upright state, there is a certain distance between the bottom of the sewage tank 12 and the bottom of the housing 21 in the vertical direction, and the vertical orthographic projection of the sewage discharge port 122 at the bottom of the sewage tank 12 is within the vertical orthographic projection of the housing 21. Correspondingly, the receiving groove 41a on the first bearing portion 40 is within the orthographic projection range of the second bearing portion 50 on the first support surface 41, and the vertical orthographic projection of the receiving groove 41a overlaps with the sewage discharge port 122. With such a setting, it can be ensured that when the first bearing portion 40 supports the floor brush assembly 20, the sewage discharge groove 51a on the second bearing portion 50 is docked with the sewage discharge port 122 at the bottom of the sewage tank 12.

[0137] Optionally, as Figure 9 shown, a rolling mating surface 52 is formed on the outer wall surface of the second bearing portion 50, and during the process of the cleaning device 100 detaching from the base station 200, the rolling mating surface 52 is used to form a rolling fit with the driving wheel 24.

[0138] Exemplarily, the second bearing portion 50 has an upper surface and an outer wall surface. The upper surface defines the aforementioned second support surface 51, and the outer wall surface is located at the front side of the second bearing portion 50 and extends upward and forward obliquely from the bottom of the second bearing portion 50 to define a rolling mating surface 52. When the cleaning device 100 is removed from the base station 200, the user can use the contact position between the cleaning member 23 and the first support surface 41 as a rotation fulcrum, rotate the cleaning device 100 forward around the rotation fulcrum, and at the same time, the driving wheel 24 at the bottom of the floor brush assembly 20 is lifted upward around the rotation fulcrum. During the lifting process, the driving wheel 24 forms a rolling fit with the rolling mating surface 52, and as the cleaning device 100 rotates, the bottom of the body assembly 10 is disengaged from the second support surface 51. After the cleaning device 100 is rotated by a certain angle, only the cleaning member 23 of the cleaning device 100 is in contact with the first bearing portion 40, and finally the user lifts the cleaning device 100 upward to completely disengage the cleaning device 100 from the base station 200.

[0139] Through the above embodiments, when the user takes the cleaning device 100 from the base station 200, the rolling fit between the driving wheel 24 and the rolling mating surface 52 of the second bearing portion 50 can avoid hard contact between the housing 21 of the floor brush assembly 20 and the base station 200, which can not only provide a certain protection effect for the cleaning device 100 and the base station 200, but also improve the convenience for the user to take the cleaning device 100.

[0140] In one embodiment, the first bearing portion 40 further has two charging contacts 42 arranged at intervals, and the two charging contacts 42 are located on opposite sides of the receiving groove 41a; wherein, the two charging contacts 42 are arranged adjacent to the contour edge line of the orthographic projection of the second bearing portion 50 on the first support surface 41.

[0141] Figure 11 The bottom view of the floor brush assembly 20 of the cleaning device 100 according to an embodiment of the present disclosure is shown, as Figure 11 shown. Exemplarily, an energy supply module is provided inside the cleaning device 100, and the energy supply module has two charging terminals 26 extending from the bottom of the housing 21 to the outside. When the cleaning device 100 is placed on the base station 200, the two charging terminals 26 are in electrical contact with the two charging contacts 42 on the first bearing portion 40, so that the base station 200 can charge the energy supply module. More specifically, when the cleaning device 100 is in an upright state, the two charging terminals 26 are within the range of the vertical orthographic projection of the bottom of the body assembly 10 and are arranged adjacent to the contour edge line of the vertical orthographic projection of the bottom of the body assembly 10. Thus, the layout compactness of the whole cleaning device 100 can be improved, and the space utilization rate can be improved.

[0142] Correspondingly, the vertical orthographic projection of the two charging contacts 42 on the first bearing portion 40 is located within the orthographic projection range of the second bearing portion 50 on the first support surface 41, and the two charging contacts 42 are arranged adjacent to the contour edge line of the orthographic projection of the second bearing portion 50 on the first support surface 41, so that when the cleaning device 100 is placed on the base station 200, the two charging contacts 42 can correspond to the positions of the two charging terminals 26 to achieve docking.

[0143] Other components of the cleaning device and the cleaning system in the above embodiments can adopt various technical solutions known to those of ordinary skill in the art now and in the future, which will not be described in detail here.

[0144] In the description of this specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present disclosure.

[0145] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, "a plurality" means two or more, unless otherwise specifically defined.

[0146] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0147] In this disclosure, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0148] It should be noted that although the steps of the methods in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and / or one step may be decomposed into multiple steps for execution, etc. The above-mentioned accompanying drawings are merely schematic illustrations of the processes included in the methods according to the exemplary embodiments of this disclosure, rather than for limiting purposes. It is easily understandable that the processes shown in the above-mentioned accompanying drawings do not indicate or limit the chronological order of these processes. Additionally, it is also easily understandable that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0149] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this disclosure. To simplify the disclosure of this disclosure, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit this disclosure. In addition, this disclosure may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0150] As described above, the foregoing are only specific embodiments of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by this disclosure can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be subject to the protection scope of the claims.

Claims

1. A cleaning device, characterized in that, Comprising: A body assembly including a main body and a sewage tank, wherein the sewage tank is arranged on the main body; A floor brush assembly including a housing, a sewage suction pipe, a cleaning member and traveling wheels, wherein a sewage suction port is formed at the bottom of the housing, one end of the sewage suction pipe is communicated with the sewage suction port, the other end of the sewage suction pipe extends out of the housing and is communicated with the inside of the sewage tank, the cleaning member is used for cleaning a surface to be cleaned, and the cleaning member and the traveling wheels are arranged on the floor brush assembly at intervals in a first direction; The sewage tank is arranged on a side of the main body away from the cleaning member in the first direction, the sewage tank has a bottom end adjacent to the floor brush assembly, and a sewage discharge port communicating the inside and the outside of the sewage tank is formed at the bottom end; A connecting mechanism is connected between the main body and the housing, so that the main body can rotate relative to the housing between a first position and a second position around a first rotation axis, and the main body is in a lying state when located at the second position; Wherein, the connecting mechanism is located between a part of the sewage suction pipe extending out of the housing and the cleaning member in the first direction.

2. The cleaning device according to claim 1, characterized in that, There is a docking space between the sewage discharge port and the floor brush assembly, a part of the sewage suction pipe extending out of the housing is located between the connecting mechanism and the docking space in the first direction, and the sewage discharge port is arranged on a side of the part of the sewage suction pipe extending out of the housing away from the connecting mechanism.

3. The cleaning device according to claim 1, characterized in that, The traveling wheels include a driving wheel, the driving wheel is located on a side of the connecting mechanism away from the cleaning member in the first direction, and a part of the sewage suction pipe extending out of the housing is located between the connecting mechanism and the driving wheel in the first direction.

4. The cleaning device according to claim 3, wherein, The first rotation axis is parallel to a second direction, and the second direction is perpendicular to the first direction; wherein, the rotation center of the driving wheel is located on a side of the first rotation axis away from the cleaning member in the first direction.

5. The cleaning device according to claim 3, characterized in that, The distance between the first rotation axis and the surface to be cleaned is D1, the distance between the rotation center of the driving wheel and the surface to be cleaned is D2, and D1 > D2 is satisfied.

6. The cleaning device according to claim 5, wherein, The distance D1 between the first rotation axis and the surface to be cleaned is greater than the diameter of the driving wheel.

7. The cleaning device according to claim 1, characterized in that, When the main body is located at the second position, the first rotation axis is located on a side of the sewage suction pipe away from the surface to be cleaned.

8. The cleaning device according to claim 1, characterized in that, When the main body is located at the second position, the projection distance of the connection line between the first rotation axis and the edge of the bottom end of the sewage tank away from the main body side in the normal direction of the surface to be cleaned is D3, and the distance D1 between the first rotation axis and the surface to be cleaned, and D3 ≤ L1 is satisfied.

9. The cleaning device according to claim 3, characterized in that Further comprising: A driving assembly arranged inside the housing, the driving assembly includes a driving motor and a transmission mechanism, an output shaft of the driving motor is in transmission connection with an input end of the transmission mechanism, and an output end of the transmission mechanism is in transmission connection with the driving wheel; Wherein, the distance between the output shaft of the driving motor and the surface to be cleaned is D6, and the distance between the rotation center of the driving wheel and the surface to be cleaned is D2, and D6 > D2 is satisfied.

10. The cleaning device according to any one of claims 1 to 9, characterized in that, The connecting mechanism includes a first connecting member and a second connecting member. The first connecting member is rotatably connected to the housing, and the first connecting member is rotatable relative to the housing about the first rotation axis. The second connecting member is rotatably connected to the first connecting member, and the second connecting member is rotatable relative to the first connecting member about a second rotation axis. The second connecting member is connected to the main body; wherein, the second rotation axis is perpendicular to the first direction, and the second connecting member is located above the first connecting member.

11. The cleaning device according to claim 10, wherein, When the main body is in the first position, the included angle between the extending direction of the first connecting member and the first direction of the housing is an acute angle.

12. The cleaning device according to any one of claims 1 to 9, characterized in that, An avoidance notch is formed at the top of the housing. The avoidance notch extends to the side of the top of the housing away from the cleaning member in the first direction, and the connecting mechanism passes through the avoidance notch and is movably connected to the housing.

13. The cleaning device according to claim 12, characterized in that, The traveling wheel includes a driving wheel, and the avoidance notch extends above the driving wheel; when the main body is in the second position, the part of the sewage suction pipe located above the driving wheel is received in the avoidance notch.

14. The cleaning device according to any one of claims 1 to 9, characterized in that, The traveling wheel includes a driving wheel. The driving wheel is arranged on the side of the housing away from the cleaning member. The driving wheel is centrally arranged at the bottom of the housing in the second direction, and the connecting mechanism is centrally arranged relative to the housing in the second direction.

15. The cleaning device according to any one of claims 1 to 9, characterized in that The traveling wheel includes a driving wheel; an embedding hole is formed at the bottom of the housing, and the driving wheel is arranged in the embedding hole, and at least part of the driving wheel is located inside the housing.

16. A cleaning device, characterized in that, Comprising: A body assembly, including a main body and a sewage tank. The sewage tank is arranged on the main body. A floor brush assembly, including a housing, a sewage suction pipe, a cleaning member and a driving wheel. A sewage suction port is formed at the bottom of the housing. One end of the sewage suction pipe is communicated with the sewage suction port, and the other end of the sewage suction pipe extends out of the housing and is communicated with the inside of the sewage tank. The cleaning member is used for cleaning the surface to be cleaned, and the cleaning member and the driving wheel are arranged at intervals at the bottom of the housing in the first direction. A connecting mechanism, connected between the main body and the housing, so that the main body can rotate relative to the housing about the first rotation axis between a first position and a second position. Wherein, the driving wheel is located on the side of the connecting mechanism away from the cleaning member in the first direction, and the part of the sewage suction pipe extending out of the housing is located between the connecting mechanism and the driving wheel in the first direction.

17. The cleaning device according to claim 16, wherein, The connecting mechanism, the sewage suction pipe and the driving wheel overlap in projection in the first direction.

18. The cleaning device according to claim 17, wherein, The center line of the connecting mechanism in the first direction passes through the rotation center of the driving wheel.

19. A cleaning system, characterized in that, Comprising: A base station; And, The cleaning device according to any one of claims 1 to 18, which can be detachably placed on the base station.

20. The cleaning system according to claim 19, wherein The base station has a first bearing part and a second bearing part; the first bearing part is used for bearing the floor brush assembly and has a first support surface for bearing the floor brush assembly, and a receiving groove for accommodating the driving wheel of the floor brush assembly is provided on the first bearing part; The second bearing part is used for docking with the sewage discharge port of the sewage tank, and the second bearing part has a sewage discharge groove for docking with the sewage discharge port of the sewage tank; Wherein, the receiving groove is within the range of the orthographic projection of the second bearing part on the first support surface.

21. The cleaning system according to claim 20, wherein A rolling mating surface is formed on the outer wall surface of the second bearing part, and the rolling mating surface is used for forming a rolling mating with the driving wheel during the process of the cleaning device detaching from the base station.

22. The cleaning system according to claim 20, wherein The first bearing part also has two charging contacts arranged at intervals, and the two charging contacts are located on opposite sides of the receiving groove; Wherein, the two charging contacts are arranged adjacent to the contour edge line of the orthographic projection of the second bearing part in the first support surface.

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